Nonwoven fabric on-line inspection system

Abstract

The utility model discloses a non -woven fabric on -line detection system relates to non -woven fabric technical field, this non -woven fabric on -line detection system, including the winding mechanism of winding non -woven fabric, and the upstream of winding mechanism is equipped with visual inspection module and label execution module along non -woven fabric transmission path direction respectively, visual inspection module includes industrial camera, upper light source subassembly and lower light source subassembly, label execution module includes labeller, servo motor and linear module, and the winding shaft of winding mechanism is connected with the encoder through the shaft coupling, and the encoder sends pulse signal to PLC controller, data processing industrial computer and industrial camera, and industrial camera and data processing industrial computer electrically connected, and data processing industrial computer and PLC controller signal connection, the utility model discloses the visual inspection module and label execution module linkage on production line, realize on -line detection and label with the speed synchronization of production line through the encoder, realize machine vision on -line detection instead of manual offline detection, and the recognition rate is high, and the detection is comprehensive, and the efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric technology, specifically to an online nonwoven fabric inspection system. Background Technology

[0002] In existing nonwoven fabric production processes, stain detection before winding is a common quality control step, directly impacting product yield and market competitiveness. Stain detection on nonwoven fabric surfaces primarily relies on manual sampling and offline inspection. Manual sampling suffers from low efficiency and a high rate of missed detections, and human inspectors are prone to fatigue and subjective judgment. Offline inspection lacks real-time problem detection capabilities. Replacing manual inspection with machine vision-based online inspection not only offers high stain recognition rates and low errors, but also reduces human error, resulting in high efficiency and real-time performance. Therefore, we provide an online nonwoven fabric inspection system. Utility Model Content

[0003] The purpose of this invention is to provide an online inspection system for nonwoven fabrics, which solves the problems of low efficiency, high missed detection rate, and insufficient real-time performance of manual inspection of stains on the surface of nonwoven fabrics.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an online nonwoven fabric inspection system, including a winding mechanism for winding nonwoven fabric, a visual inspection module and a labeling execution module respectively provided upstream of the winding mechanism along the nonwoven fabric transmission path, the visual inspection module and the labeling execution module being mounted on a support, the support being provided with reversing rollers for nonwoven fabric input and output, the nonwoven fabric running towards the winding mechanism via the reversing rollers;

[0005] The visual inspection module includes an industrial camera, an upper light source assembly, and a lower light source assembly. The industrial camera, upper light source assembly, and lower light source assembly are all fixed on a bracket. The upper light source assembly is mounted above the nonwoven fabric transmission path and emits light towards the nonwoven fabric to form reflected light. The lower light source assembly is mounted below the nonwoven fabric transmission path and emits light towards the nonwoven fabric to form transmitted light. The industrial camera is mounted above the nonwoven fabric transmission path and captures images towards the nonwoven fabric.

[0006] The labeling execution module includes a labeling machine, a servo motor, and a linear module. The servo motor drives the linear module to move the labeling machine horizontally. The linear module is horizontally set and fixed on the bracket along the direction of the vertical non-woven fabric transmission path. The labeling machine is mounted above the non-woven fabric transmission path and faces the non-woven fabric to apply the label.

[0007] The winding shaft of the winding mechanism is coaxially connected to the encoder via a coupling. The encoder transmits pulse signals to the PLC controller, the data processing industrial computer, and the industrial camera. The industrial camera is electrically connected to the data processing industrial computer, and the data processing industrial computer is signal-connected to the PLC controller. The data processing industrial computer transmits stain coordinate information to the PLC controller. The PLC controller is electrically connected to the servo driver, and the servo driver is electrically connected to the servo motor.

[0008] Preferably, the industrial camera is positioned between the upper light source assembly and the lower light source assembly.

[0009] Preferably, the upper light source assembly and the lower light source assembly are inclined in opposite directions.

[0010] Preferably, the nonwoven fabric between the reversing rollers is horizontally distributed.

[0011] Preferably, the labeling machine is a mechanical labeling machine.

[0012] Preferably, the reflection and transmission positions of the upper and lower light source components on the nonwoven fabric are staggered.

[0013] Preferably, a protective cover is provided on the bracket at the position corresponding to the visual inspection module.

[0014] This utility model has the following beneficial effects:

[0015] 1. The vision inspection module and labeling execution module on the production line are linked. The encoder enables online inspection and labeling to be synchronized with the speed of the production line. This realizes online machine vision inspection to replace manual offline inspection, with high recognition rate, comprehensive inspection and high efficiency.

[0016] 2. Automate detection and labeling to reduce manual intervention;

[0017] 3. Real-time detection ensures minimal labeling position error and accurate real-time marking. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a perspective view of the support position of this utility model;

[0020] Figure 3 This is a left view of the bracket position of this utility model;

[0021] Figure 4 This is a schematic diagram of the system of this utility model.

[0022] In the diagram: 1. Winding nonwoven fabric; 2. Winding mechanism; 3. Servo driver; 4. Vision inspection module; 41. Industrial camera; 42. Upper light source assembly; 43. Lower light source assembly; 5. Labeling execution module; 51. Labeling machine; 52. Servo motor; 53. Linear module; 6. Bracket; 61. Reversing roller; 62. Protective cover; 7. Encoder; 8. PLC controller; 9. Data processing industrial computer. Detailed Implementation

[0023] 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.

[0024] like Figure 1-4 As shown, this utility model provides a technical solution: an online nonwoven fabric inspection system, including a winding mechanism 2 for winding nonwoven fabric 1. A visual inspection module 4 and a labeling execution module 5 are respectively provided upstream of the winding mechanism 2 along the transmission path of the nonwoven fabric 1. The visual inspection module 4 and the labeling execution module 5 are mounted on a bracket 6. The bracket 6 is provided with reversing rollers 61 for input and output of nonwoven fabric 1. The nonwoven fabric 1 runs towards the winding mechanism 2 via the reversing rollers 61. The nonwoven fabric 1 is horizontally distributed between the reversing rollers 61. A protective cover 62 is provided on the bracket 6 at the position corresponding to the visual inspection module 4 to avoid external light pollution and reduce the influence of ambient light.

[0025] The visual inspection module 4 includes an industrial camera 41, an upper light source assembly 42, and a lower light source assembly 43. The industrial camera 41 is positioned between the upper light source assembly 42 and the lower light source assembly 43. The industrial camera 41, the upper light source assembly 42, and the lower light source assembly 43 are all fixed on the bracket 6. The upper light source assembly 42 and the lower light source assembly 43 are tilted in opposite directions. The reflection and transmission positions of the light sources of the upper light source assembly 42 and the lower light source assembly 43 on the nonwoven fabric 1 are staggered. The upper light source assembly 42 is mounted above the transmission path of the nonwoven fabric 1 and faces the nonwoven fabric 1 to emit light to form reflected light, which is suitable for detecting stains, oil spots, fiber clumps, and abnormal colors on the surface. The lower light source assembly 43 is mounted below the transmission path of the nonwoven fabric 1 and faces the nonwoven fabric 1 to emit light to form transmitted light, which is suitable for detecting defects such as holes, uneven thickness, and differences in light transmittance. The industrial camera 41 is mounted above the transmission path of the nonwoven fabric 1 and faces the nonwoven fabric 1 to acquire images. The industrial camera 41 is triggered synchronously with the production line through the encoder 7 to capture high-speed images of the surface of the nonwoven fabric 1.

[0026] The labeling execution module 5 includes a labeling machine 51, a servo motor 52, and a linear module 53. The labeling machine 51 is a mechanical labeling machine, such as a self-adhesive labeling machine. The servo motor 52 drives the linear module 53 to move the labeling machine 51 horizontally. The servo motor 52 receives the target position command sent by the PLC controller 8. The linear module 53 is horizontally set and fixed on the bracket 6 along the vertical transmission path of the non-woven fabric 1. The labeling machine 51 is set above the transmission path of the non-woven fabric 1 and faces the non-woven fabric 1 to apply the label. The labeling execution module 5 moves laterally to the labeling station and triggers the mechanical labeling action to achieve accurate marking of stains.

[0027] The winding shaft of the winding mechanism 2 is coaxially connected to the encoder 7 via a coupling. The encoder 7 is synchronized with the production line speed to ensure image acquisition without ghosting. The encoder 7 outputs pulse signals in real time and transmits these pulse signals to the PLC controller 8, the data processing industrial computer 9, and the industrial camera 41. The industrial camera 41 is electrically connected to the data processing industrial computer 9, and the data processing industrial computer 9 is signal-connected to the PLC controller 8. The data processing industrial computer 9 identifies stains and extracts stain features through the image processing unit, receives pulse information from the encoder 7 through the speed synchronization unit, calculates the spatial coordinates of the stains, and transmits the stain coordinates through the communication control unit. The data processing industrial computer 9 transmits the stain coordinate information to the PLC controller 8. The PLC controller 8 is electrically connected to the servo driver 3, and the servo driver 3 is electrically connected to the servo motor 52. The PLC controller 8 controls the operation of the servo motor 52 through the servo driver 3. Based on the calculated stain coordinate information and the speed control of the nonwoven fabric 1 production line, the PLC controller 8 controls the labeling execution module 5 to run to the stain coordinate position for labeling.

[0028] Workflow:

[0029] 1. Non-woven fabric 1 is wound up by winding mechanism 2 and conveyed at a constant speed between reversing rollers 61. Industrial camera 41 continuously acquires images under the trigger of encoder 7.

[0030] 2. Data Processing: After the image processing unit of the industrial control computer 9 identifies the blemishes, it sends the coordinates to the PLC controller 8.

[0031] 3. The PLC controller 8 calculates the labeling information based on the production line speed and stain coordinate information, and controls the labeling machine 51 of the labeling execution module 5 to reach the stain position and apply the label.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] 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 online inspection system, comprising a winding mechanism (2) for winding nonwoven fabric (1), characterized in that: The upstream of the winding mechanism (2) along the transmission path of the nonwoven fabric (1) is provided with a vision detection module (4) and a labeling execution module (5). The vision detection module (4) and the labeling execution module (5) are mounted on a bracket (6). The bracket (6) is provided with a reversing roller (61) for input and output of the nonwoven fabric (1). The nonwoven fabric (1) runs towards the winding mechanism (2) via the reversing roller (61). The visual inspection module (4) includes an industrial camera (41), an upper light source assembly (42), and a lower light source assembly (43). The industrial camera (41), the upper light source assembly (42), and the lower light source assembly (43) are all fixed on the bracket (6). The upper light source assembly (42) is mounted above the transmission path of the nonwoven fabric (1) and emits light to the nonwoven fabric (1) to form reflected light. The lower light source assembly (43) is mounted below the transmission path of the nonwoven fabric (1) and emits light to the nonwoven fabric (1) to form transmitted light. The industrial camera (41) is mounted above the transmission path of the nonwoven fabric (1) and faces the nonwoven fabric (1) to collect images. The labeling execution module (5) includes a labeling machine (51), a servo motor (52) and a linear module (53). The servo motor (52) drives the linear module (53) to move the labeling machine (51) horizontally. The linear module (53) is horizontally set and fixed on the bracket (6) along the direction of the vertical nonwoven fabric (1) transmission path. The labeling machine (51) is set above the nonwoven fabric (1) transmission path and faces the nonwoven fabric (1) to apply the label. The winding shaft of the winding mechanism (2) is coaxially connected to the encoder (7) via a coupling. The encoder (7) sends pulse signals to the PLC controller (8), the data processing industrial computer (9), and the industrial camera (41). The industrial camera (41) is electrically connected to the data processing industrial computer (9). The data processing industrial computer (9) is signal connected to the PLC controller (8). The data processing industrial computer (9) sends stain coordinate information to the PLC controller (8). The PLC controller (8) is electrically connected to the servo driver (3). The servo driver (3) is electrically connected to the servo motor (52).

2. The online nonwoven fabric inspection system according to claim 1, characterized in that: The industrial camera (41) is positioned between the upper light source assembly (42) and the lower light source assembly (43).

3. The online nonwoven fabric inspection system according to claim 1, characterized in that: The upper light source assembly (42) and the lower light source assembly (43) are inclined in opposite directions.

4. The online nonwoven fabric inspection system according to claim 1, characterized in that: The nonwoven fabric (1) between the reversing rollers (61) is horizontally distributed.

5. The online nonwoven fabric inspection system according to claim 1, characterized in that: The labeling machine (51) is a mechanical labeling machine.

6. The online nonwoven fabric inspection system according to claim 1, characterized in that: The upper light source assembly (42) and the lower light source assembly (43) have staggered reflection and transmission positions on the nonwoven fabric (1).

7. The online nonwoven fabric inspection system according to claim 1, characterized in that: A protective cover (62) is provided on the bracket (6) at the position corresponding to the visual inspection module (4).

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