Double-conveying self-checking device aiming at gray fabric defects

By using PLC control and servo motor drive of the dual-conveyor self-inspection device, combined with real-time image analysis from industrial cameras and supplementary lights, the automated detection and classification of fabric defects has been achieved, solving the problem of low applicability of existing devices and improving production efficiency and product quality.

CN223977139UActive Publication Date: 2026-03-06HANGZHOU YIDUI TEXTILE CO LTD
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Patent Information

Application Number
CN202520922595.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-12
Publication Date
2026-03-06
Estimated Expiration
2035-05-12

AI Technical Summary

Technical Problem

Existing fabric defect self-inspection devices can only transport fabric of a suitable length. Fabric that is too long requires manual assistance to wind up, and cannot be returned after a defect is detected, resulting in cumbersome operation and low applicability.

Method used

The device employs a dual-conveying self-inspection system, which uses a PLC controller and a servo motor to drive a ball screw pair to achieve bidirectional conveying of the fabric. Combined with an industrial camera and supplementary lighting, it performs real-time image analysis, automatically identifies defects, and reverses the conveying or rotates the fabric when defects are detected, thus achieving automated classification and processing.

Benefits of technology

It improves self-inspection efficiency, enhances the applicability of the device, reduces manual intervention, realizes automated processing and rapid winding of excessively long fabrics, and improves production efficiency and product quality control.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223977139U_ABST
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Abstract

The utility model discloses a double-conveying self-checking device aiming at gray fabric defects, which comprises a rack, a PLC (programmable logic controller) and a loudspeaker are sequentially mounted on one side of the rack, conveying slide rails are arranged at the bottoms of two sides of the rack, ball screw pairs are movably connected in the conveying slide rails, and a servo motor is mounted on the rack at one end of each ball screw pair. During operation, the PLC outputs accurate instructions to the servo driver arranged on the servo motor through signal interaction, so that forward rotation or reverse rotation of the servo motor is adjusted, specifically, when the PLC controls the servo motor to rotate forwards, a ball screw and a nut seat on the ball screw pair are driven to move, and the servo motor is driven to rotate forwards. The servo motor is controlled to rotate reversely to enable the two driving seats to carry products to convey rightwards, if defects of the grey cloth are detected during follow-up and self-inspection, the servo motor is controlled to rotate reversely, the two driving seats carry the products to return leftwards, and therefore the device can achieve double-conveying classification treatment of the grey cloth according to the self-inspection result.
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Description

Technical Field

[0001] This utility model relates to the field of fabric defect self-inspection technology, specifically a dual-conveying self-inspection device for fabric defects. Background Technology

[0002] Greige fabric refers to fabric made from fibers that have undergone spinning and weaving processes but have not yet undergone dyeing and finishing. In actual production, it is essential to conduct self-inspection of greige fabric defects. Specifically, from a production perspective, early detection of greige fabric defects can prevent the processing of defective greige fabric in subsequent dyeing, finishing, cutting, and sewing processes, thereby reducing resource waste and improving production efficiency. In terms of quality control, only qualified greige fabric can be made into high-quality textiles. Self-inspection can ensure that product quality meets standards and maintain brand reputation.

[0003] Current self-inspection devices for fabric defects can only transport fabric of a suitable length forward through the monitoring area. Fabric that is too long requires manual assistance for transporting and winding, which results in low applicability of the device. Furthermore, after detecting a defect in the fabric, it often stops directly and cannot return the fabric, which requires the user to retrieve the fabric and makes the operation cumbersome. Based on this, we propose a new type of dual-transport self-inspection device for fabric defects. Utility Model Content

[0004] The purpose of this invention is to provide a dual-conveying self-inspection device for fabric defects, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-conveyor self-inspection device for fabric defects, comprising a frame, on one side of which a PLC controller and a speaker are sequentially mounted, and conveyor slides are provided at the bottom of both sides of the frame. A ball screw pair is movably connected inside the conveyor slides. A servo motor is mounted on the frame at one end of the ball screw pair, and a servo driver is mounted on the servo motor. A drive seat is connected to the ball screw pair, and a stepper self-locking motor is mounted on one side of the drive seat. The output end of the stepper self-locking motor is connected to a mounting rotating plate. Fabric winding rollers are installed between adjacent mounting rotating plates. An upper monitoring seat and a lower monitoring seat are respectively mounted on the top and bottom of the frame via screws. An industrial camera and a supplementary light are inserted into the interior of both the upper and lower monitoring seats.

[0006] Preferably, the supplementary lights are distributed at both ends of the industrial camera, and the outer walls of both the industrial camera and the supplementary lights are uniformly provided with fixing blocks. Screws are provided between the upper monitoring seat and the lower monitoring seat and the fixing blocks.

[0007] Preferably, the ball screw assembly includes a ball screw and a nut seat, and the output end of the servo motor is connected to the ball screw.

[0008] Preferably, the bottom of the drive seat and the nut seat are fixed, and a sliding connection is formed between the drive seat and the conveying slide rail.

[0009] Preferably, the edge of the mounting rotary plate is uniformly and movably connected with guide balls that contact the drive seat.

[0010] Preferably, both ends of the fabric winding roller are provided with positioning slide bars, the mounting rotating plate is provided with positioning grooves that match the positioning slide bars, and screws are provided between the positioning slide bars and the mounting rotating plate to facilitate the positioning, disassembly, and maintenance of the fabric winding roller.

[0011] Preferably, two limiting discs are evenly arranged on the fabric winding roller.

[0012] Preferably, a disposable plastic clip is attached to one side of the fabric winding roller, and the outer wall of the disposable plastic clip is provided with a fabric adhesive layer.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This dual-conveyor self-inspection device for fabric defects optimizes its performance by incorporating servo motors. On one hand, the PLC controller uses signal interaction to precisely output commands to the servo drivers mounted on the servo motors, thereby adjusting the forward or reverse rotation of the servo motors. Specifically, when the PLC controller controls the servo motors to rotate forward, it drives the ball screw and nut seat on the ball screw pair to move, causing the two drive seats to convey the product to the right. Subsequently, if a fabric defect is detected during self-inspection, the servo motors are controlled to rotate in reverse, causing the two drive seats to convey the product back to the left. This allows the device to perform dual conveying and classification processing of the fabric based on the self-inspection results. On the other hand, if the fabric is too long and no defects are found when the two drive seats convey the product to the far right of the device, the stepper self-locking motor starts, driving the two rotating plates and the fabric winding roller installed between them to rotate. Through automated winding, the fabric can continue to be pulled to the right to pass through the monitoring area for self-inspection, increasing the processing length of the fabric. Furthermore, by automatically winding the product, the qualified product can be directly removed after winding, saving the time of manual winding and sorting of qualified fabric and enhancing its practicality.

[0015] (2) The dual conveying self-inspection device for fabric defects is equipped with a lower monitoring seat, so that during the actual operation of the device, the fabric will continuously pass through the upper and lower monitoring seats during the conveying process. This allows the industrial cameras on the upper and lower monitoring seats to work with the light source provided by the supplementary light to capture high-definition images of the upper and lower surfaces of the fabric in real time for processing. The image data is then sent to the PLC controller, which automatically analyzes and compares the image data and the saved standard data according to the preset program, and intelligently judges whether there are defects in the fabric. If a problem is found, it will promptly alarm through the speaker and convey the product to the back, thus improving the efficiency of self-inspection.

[0016] (3) The dual conveying self-inspection device for fabric defects is equipped with positioning slide bars, which optimizes the structure of the device. On the one hand, the user can use the sliding connection formed by the positioning slide bars and positioning grooves, along with the locking action of screws, to disassemble and install the fabric winding roller between the two mounting rotating plates. This makes it convenient for the user to remove the fabric product that has been wound on the fabric winding roller as a whole. In addition, the user can use the plugging and fixing action between the upper and lower monitoring seats and the corresponding fixing blocks to independently disassemble and maintain the industrial camera and supplementary light on the upper and lower monitoring seats. On the other hand, the user can use the fabric adhesive layer on the disposable plastic card strip to fix the front end of the fabric to be inspected on the fabric winding roller by bonding. The user can also use the snap-fit ​​fixing action between the disposable plastic card strip and the fabric winding roller to flexibly replace the disposable plastic card strip. This makes it convenient to quickly disassemble and replace the fabric fixing structure on the fabric winding roller. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present invention;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This is a front view schematic diagram of the disassembled industrial camera of this utility model;

[0021] Figure 5 This is a partial cross-sectional view of the fabric winding roller of this utility model.

[0022] In the diagram: 1. Stepper self-locking motor; 2. Drive base; 3. Industrial camera; 4. Lower monitoring base; 5. Frame; 6. PLC controller; 7. Speaker; 8. Ball screw pair; 9. Conveyor slide rail; 10. Servo motor; 11. Upper monitoring base; 12. Fabric winding roller; 13. Mounting rotating plate; 14. Positioning slide groove; 15. Positioning slide bar; 16. Limit plate; 17. Guide ball; 18. Fill light; 19. Fixing block; 20. Disposable plastic clip; 21. Fabric adhesive layer; 22. Servo driver. 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figure 1-5 An embodiment of this utility model is provided: a dual conveying self-inspection device for defects in raw fabric, including a frame 5, a PLC controller 6 and a speaker 7 are installed sequentially on one side of the frame 5, conveying slide rails 9 are provided at the bottom of both sides of the frame 5, a ball screw pair 8 is movably connected inside the conveying slide rail 9, a servo motor 10 is installed on the frame 5 at one end of the ball screw pair 8, a servo driver 22 is installed on the servo motor 10, and a drive seat 2 is connected to the ball screw pair 8;

[0025] The ball screw assembly 8 includes a ball screw and a nut seat, and the output end of the servo motor 10 is connected to the ball screw;

[0026] The bottom of the drive seat 2 is fixed to the nut seat, and a sliding connection is formed between the drive seat 2 and the conveying slide rail 9;

[0027] In use, the PLC controller 6 achieves precise command output to the servo driver 22 equipped on the servo motor 10 through signal interaction, thereby realizing the adjustment of the forward or reverse rotation of the servo motor 10. Specifically, when the PLC controller 6 controls the servo motor 10 to rotate forward, it drives the ball screw and nut seat on the ball screw pair 8 to move, so that the two drive seats 2 carry the product to the right. Subsequently, if a defect in the fabric is detected during self-inspection, the servo motor 10 is controlled to rotate in reverse, so that the two drive seats 2 carry the product back to the left. This allows the device to achieve dual conveying and classification processing of the fabric based on the self-inspection results.

[0028] A stepper self-locking motor 1 is installed on one side of the drive base 2. The output end of the stepper self-locking motor 1 is connected to the mounting rotating plate 13. A fabric winding roller 12 is installed between adjacent mounting rotating plates 13.

[0029] In use, if the fabric is too long and no defects are found when the two drive seats 2 transport the product to the far right of the device, the stepper self-locking motor 1 starts, driving the two mounting rotating plates 13 and the fabric winding roller 12 installed between them to rotate. Through automated winding, the fabric can continue to be pulled to the right to pass through the monitoring area for self-inspection, increasing the processing length of the fabric. By automatically winding the product, the qualified product can be directly removed after winding, saving the time of manual winding and sorting of qualified fabric and enhancing practicality.

[0030] The top and bottom of the frame 5 are respectively screwed to install the upper monitoring seat 11 and the lower monitoring seat 4. The upper monitoring seat 11 and the lower monitoring seat 4 are both plugged into the interior of the industrial camera 3 and the fill light 18.

[0031] The supplementary lights 18 are distributed at both ends of the industrial camera 3. The outer walls of the industrial camera 3 and the supplementary lights 18 are evenly provided with fixing blocks 19. The upper monitoring seat 11 and the lower monitoring seat 4 are provided with screws between them and the fixing blocks 19.

[0032] The edge of the mounting rotating plate 13 is evenly and dynamically connected with guide balls 17 that are in contact with the drive seat 2;

[0033] Both ends of the fabric winding roller 12 are provided with positioning slide bars 15, and the mounting rotating plate 13 is provided with positioning grooves 14 that match the positioning slide bars 15. Screws are provided between the positioning slide bars 15 and the mounting rotating plate 13.

[0034] In use, the user can use the sliding connection formed by the positioning slide bar 15 and the positioning slide groove 14, along with the locking and fixing effect of the screw, to assemble and disassemble the fabric winding roller 12 between the two mounting rotating plates 13. This makes it convenient for the user to remove the fabric product that has been wound on the fabric winding roller 12 as a whole.

[0035] Two limiting discs 16 are evenly arranged on the fabric winding roller 12.

[0036] A disposable plastic clip 20 is attached to one side of the fabric winding roller 12, and a fabric adhesive layer 21 is provided on the outer wall of the disposable plastic clip 20.

[0037] In use, users can use the adhesive layer 21 on the fabric strip 20 to fix the front end of the fabric to be inspected on the fabric winding roller 12 by bonding. They can also use the snap-fit ​​fixing effect between the disposable plastic strip 20 and the fabric winding roller 12 to flexibly replace the disposable plastic strip 20. This makes it easy to quickly remove and replace the fabric fixing structure on the fabric winding roller 12.

[0038] In this embodiment, during use: First, the user presses and fixes the front end of the fabric to be processed onto the fabric adhesive layer 21 of the fabric winding roller 12. During operation, the PLC controller 6 uses signal interaction to precisely output commands to the servo driver 22 equipped on the servo motor 10, thereby adjusting the forward or reverse rotation of the servo motor 10. Specifically, when the PLC controller 6 controls the servo motor 10 to rotate forward, it drives the ball screw and nut seat on the ball screw pair 8 to move, causing the two drive seats 2 to convey the product to the right. Subsequently, if a fabric defect is detected during self-inspection, the servo motor 10 is controlled to rotate in reverse, causing the two drive seats 2 to move in reverse. 2. The product is fed back to the left, allowing the device to perform dual conveying and classification processing of the fabric based on the self-inspection results. Furthermore, if the fabric is too long and no defects are found even after the two drive seats 2 have conveyed the product to the far right of the device, the stepper self-locking motor 1 starts, driving the two mounting rotating plates 13 and the fabric winding roller 12 installed between them to rotate. Through automated winding, the fabric can continue to be pulled to the right for self-inspection in the monitoring area, increasing the processing length of the fabric. Simultaneously, by automatically winding the product, the qualified product can be directly removed, saving time spent on manual winding and sorting of qualified fabric. This enhances practicality. During the fabric conveying process, the fabric continuously passes through the upper monitoring seat 11 and the lower monitoring seat 4. This allows the industrial cameras 3 on the upper and lower monitoring seats 11 and 4 to work in conjunction with the light source provided by the supplementary light 18 to capture real-time, high-definition images of the upper and lower surfaces of the fabric. The processed images are then sent to the PLC controller 6, which automatically analyzes and compares the image data with the saved standard data according to a preset program. This intelligently determines whether there are defects in the fabric. If a problem is detected, an alarm will be triggered via the speaker 7, and the product will be conveyed back to the receiving end, improving self-inspection efficiency. Furthermore, users can utilize the positioning slider 15 and positioning slide... The sliding connection formed by the groove 14, together with the locking and fixing effect of the screw, allows the fabric winding roller 12 to be disassembled and assembled between the two mounting rotating plates 13. This makes it convenient for the user to remove the fabric product that has been wound on the fabric winding roller 12 as a whole. The user can use the fabric adhesive layer 21 on the disposable plastic clip 20 to fix the front end of the fabric to be inspected on the fabric winding roller 12 by bonding, and can also use the snap-fit ​​fixing effect between the disposable plastic clip 20 and the fabric winding roller 12 to flexibly replace the disposable plastic clip 20. This makes it easy to quickly disassemble and replace the fabric fixing structure on the fabric winding roller 12.

Claims

1. A double conveying self-inspection device for fabric defects, characterized in that, The utility model provides a cloth winding device, including frame (5), one side of frame (5) is installed with PLC controller (6) and speaker (7) in proper order, and the bottom of both sides of frame (5) is provided with conveying slide rail (9), the inside movable joint of conveying slide rail (9) is connected with ball screw pair (8), and the frame (5) on ball screw pair (8) one end is installed with servo motor (10), and servo motor (10) is installed with servo driver (22), ball screw pair (8) is connected with drive seat (2), one side of drive seat (2) is installed with step self locking motor (1), and the output of step self locking motor (1) is connected with installation rotary plate (13), and the installation rotary plate (13) between adjacent is installed with cloth winding roller (12), and the top and bottom of the inside of frame (5) are respectively installed with upper monitoring seat (11) and lower monitoring seat (4) through screw, and the inside of upper monitoring seat (11) and lower monitoring seat (4) is inserted with industrial camera (3) and fill light (18).

2. A double conveying self-inspection device for fabric defects according to claim 1, characterized in that: The fill light (18) is distributed at both ends of the industrial camera (3), and the outer walls of the industrial camera (3) and the fill light (18) are uniformly provided with fixed insertion blocks (19), and the upper monitoring seat (11) and the lower monitoring seat (4) are provided with screws between the fixed insertion blocks (19).

3. A double conveying self-inspection device for fabric defects according to claim 1, characterized in that: The ball screw pair (8) includes a ball screw and a nut seat, and the output of the servo motor (10) is connected with the ball screw.

4. The double conveying self-inspection device for fabric defects according to claim 3, characterized in that: The bottom of the drive seat (2) is fixed with the nut seat, and the drive seat (2) and the conveying slide rail (9) are slidably connected.

5. A double feed self-checking device for fabric defects as claimed in claim 1 wherein: The edges of the installation rotary plate (13) are uniformly movably connected with guide balls (17) in contact with the drive seat (2).

6. A double conveying self-inspection device for fabric defects according to claim 1, characterized in that: Both ends of the cloth winding roller (12) are provided with positioning sliding strips (15), the installation rotary plate (13) is provided with positioning sliding grooves (14) matched with the positioning sliding strips (15), and the positioning sliding strips (15) and the installation rotary plate (13) are provided with screws.

7. A double conveying self-inspection device for fabric defects according to claim 1, characterized in that: The cloth winding roller (12) is uniformly provided with limit discs (16), and each limit disc (16) has two.

8. The double conveying self-inspection device for fabric defects according to claim 1, characterized in that: One side of the cloth winding roller (12) is clamped with a disposable plastic clamping strip (20), and the outer wall of the disposable plastic clamping strip (20) is provided with a cloth adhesive layer (21).