Cloth defect quality inspection device

Abstract

The invention provides a cloth defect quality inspection device, relates to the technical field of cloth quality inspection, and solves the technical problem that an existing cloth quality inspection device is insufficient in automation degree and intelligent degree. According to the technical scheme, efficient detection and accurate analysis of cloth surface defects are achieved by arranging a rack, a supporting frame, a conveying device, a detection device, a driving roller wheel driving device, a roller wheel type tensioning mechanism and a limiting plate driving mechanism; according to the method, the cloth surface defects can be efficiently and accurately identified, the efficiency and precision of cloth quality detection are greatly improved, and the labor cost and the detection error are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of cloth quality inspection, and particularly to a cloth defect quality inspection device. Background Art

[0002] In the textile industry, the quality inspection of cloth is a crucial link. Traditional cloth defect detection mainly relies on manual visual inspection. This method is not only inefficient but also easily affected by human factors, making it difficult to ensure the accuracy and consistency of the detection results. With the continuous expansion of production scale and the increasing improvement of quality requirements, the manual detection method can no longer meet the needs of modern textile industry.

[0003] In recent years, automatic detection technology based on machine vision has gradually been applied to the field of cloth defect detection. However, most of the existing machine vision detection systems adopt traditional image processing algorithms, such as edge detection, threshold segmentation, etc., and it has become a major problem how to deploy these existing machine vision detection systems on the corresponding devices. In addition, the existing traditional cloth transportation devices generally have problems such as low service life of the conveyor belt and low transportation efficiency, which further affect the efficiency of cloth quality inspection.

[0004] Therefore, how to create a cloth defect quality inspection device with both high automation and wide applicability has become a difficult problem to be solved urgently. The present invention is proposed based on this demand. Through a carefully designed structure and control system, it realizes the efficient detection and accurate analysis of cloth surface defects, providing a more economical and reliable quality inspection solution for the textile industry. Summary of the Invention

[0005] Therefore, the present invention solves the technical problem of insufficient automation and intelligence in the existing cloth quality inspection device; the cloth defect quality inspection device provided by the present invention can efficiently and accurately identify the surface defects of the cloth, greatly improving the efficiency and accuracy of cloth quality inspection, and reducing the labor cost and detection error.

[0006] A cloth defect quality inspection device provided by the present invention includes: a frame, which is welded by steel sheet metal parts and has a rectangular frame structure. The four corners of the lower part of the frame are fixed to the ground through anchor bolts, and adjustable legs are provided at the bottoms of the four corners of the frame;

[0007] A support frame, which is welded by high-strength lightweight aluminum alloy plates and is fixed to the upper part of the frame through bolts. Active rollers, driven rollers and a conveyor belt wound around the active and driven rollers are provided at both ends of the support frame;

[0008] A transportation device, the transportation device includes an active roller drive device and a driven roller. The active roller drive device is driven by a frequency conversion motor, and a belt and belt pulley are provided between the frequency conversion motor and the active roller;

[0009] A detection device, the detection device includes an information acquisition bracket disposed at the center position of the support frame, a camera support plate is disposed above the information acquisition bracket, and a hemispherical high-precision industrial camera is disposed at the bottom of the camera support plate;

[0010] A roller type tensioning mechanism, the roller type tensioning mechanism includes four tensioning rollers symmetrically disposed at both ends and the middle position below the support frame;

[0011] A limit plate driving mechanism, the limit driving mechanism is symmetrically disposed at the bottom of the support frame and adjusts the limit plate to different widths.

[0012] Further, the roller type tensioning mechanism includes a left end tensioning roller and a right end tensioning roller disposed at both ends of the support frame, and a left offset tensioning roller and a right offset tensioning roller symmetrically disposed in the middle of the support frame.

[0013] Further, the limit driving mechanism includes a support frame and limit end plates disposed at both ends of the support frame. A servo motor is disposed in the middle part of the support frame. The output shaft of the servo motor is connected to a transmission lead screw. Limit guide rods are disposed on both sides of the transmission lead screw.

[0014] Two sets of translation pedestals are disposed at both ends of the limit guide rod and the transmission lead screw near the limit end plate. A transfer frame is disposed above the translation pedestal. Connection end plates are disposed inside the two transfer frames. The connection end plate is fixedly connected to the limit plate. A slider groove is disposed at the lower end of the limit plate, and a slider-rail structure is formed with the slide rail above the support frame to realize the lateral translation of the limit plate.

[0015] Further, the detection device includes an information acquisition bracket disposed in the middle part of the support frame. A camera support plate is disposed at the center part of the upper end face of the information acquisition bracket. A hemispherical high-precision industrial camera is disposed at the center part of the camera support plate.

[0016] Further, the transportation device includes a driving device for the driving roller and a driven roller. The driving device for the driving roller includes a frequency conversion motor disposed at the front end of the support frame. The frequency conversion motor is connected to the driving roller through a transmission device to drive the driving roller to drive the conveyor belt to realize the transportation function.

[0017] Further, the conveyor belt is disposed on the driving roller and the driven roller at both ends of the support frame.

[0018] Further, the cloth detector includes a main control box disposed at the front end of the support frame. The main control box is used for the electrical connection of the limit plate driving mechanism and the driving device for the driving roller, and the communication connection between the detection device and the limit plate driving device.

[0019] The present invention has the following advantages compared with the prior art:

[0020] 1. For the fabric defect quality inspection device provided by the present invention, the frame is welded by steel sheet metal parts, and the supporting frame cooperating with it is welded by high-strength lightweight aluminum alloy plates. The whole is in a rectangular frame structure and is fixed on the ground through adjustable legs, which not only ensures the stability of the equipment during operation, but also facilitates height adjustment according to site requirements, and at the same time has both rigidity and weight reduction effects.

[0021] 2. For the fabric defect quality inspection device provided by the present invention, a roller type tensioning mechanism is set. The four rollers included are symmetrically distributed at both ends and the middle part of the bottom of the conveyor belt, so as to apply different tensions to the conveyor belt under different working conditions to pre-tighten the conveyor belt appropriately, effectively avoiding risks such as increased wear, slipping failure and deviation of the conveyor belt caused by insufficient or over-pre-tightening of the conveyor belt, and greatly extending the service life of the conveying device.

[0022] 3. For the fabric defect quality inspection device provided by the present invention, the real-time adjustment of different widths of the limiting plate can be conveniently realized through the limiting driving mechanism, which ensures the guiding and supporting effects on various fabrics. Compared with the transmission conveyor belt transportation, problems such as fabric wrinkles and deviation caused by different widths are avoided, greatly improving the transportation efficiency of the conveying device, and at the same time providing a more stable fabric surface state for subsequent defect identification.

[0023] 4. For the fabric defect quality inspection device provided by the present invention, the detection device uses the centrally arranged information collection bracket and camera support plate, and installs a hemispherical high-precision industrial camera at the bottom of the camera support plate, ensuring high-resolution image acquisition quality while fully covering the fabric detection area, laying a foundation for accurate defect identification. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a bottom view of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the detection device of the present invention;

[0028] Figure 4This is a schematic structural diagram of the limit driving mechanism of the present invention.

[0029] Explanation of reference numerals:

[0030] 1. Frame; 2. Support frame; 3. Detection device; 31. Information acquisition support; 32. Camera support plate; 33. Hemispherical high-precision industrial camera; 4. Limit driving mechanism; 41. Support frame; 42. Limit end plate; 43. Servo motor; 44. Transmission lead screw; 45. Limit guide rod; 46. Translation pedestal; 47. Adapter frame; 48. Connection end plate; 5. Variable-frequency motor; 6. Total control box; 7. Limit plate; 8. Conveyor belt; 9. Driving roller; 10. Driven roller; 11. Transportation device; 12. Driving device for driving roller; 13. Roller-type tensioning mechanism; 131. Left tensioning roller; 132. Right tensioning roller; 133. Left-offset tensioning roller; 134. Right-offset tensioning roller. Specific embodiments

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1

[0033] Figure 1 This is a schematic diagram of the overall structure of a cloth defect quality inspection device provided in this embodiment. As Figures 1 to 2 shown, the cloth defect quality inspection device includes: a frame 1, a support frame 2, a transportation device 11, a detection device 3, a roller-type tensioning mechanism 13, and a limit driving mechanism 4. The frame 1 is welded by steel sheet metal parts and is in a rectangular frame structure. The four feet at the lower part of the frame are fixed to the ground through anchor bolts, and adjustable legs are provided at the bottoms of the four corners of the frame 1; the support frame 2 is welded by high-strength lightweight aluminum alloy plates and is fixed to the upper part of the frame 1 through bolts. The driving roller 9, the driven roller 10, and the conveyor belt 8 wound around the driving roller 9 and the driven roller 10 are provided at both ends of the support frame 2; the transportation device 11 includes a driving device 12 for the driving roller and the driven roller 10. The driving device 12 for the driving roller is driven by a variable-frequency motor 5. A belt and pulley are provided between the variable-frequency motor 5 and the driving roller 9. The variable-frequency motor 5 drives the driving roller 9 to drive the driven roller through the conveyor belt 8 to realize the transportation of the cloth; the roller-type tensioning mechanism 13 includes a left tensioning roller 131 and a right tensioning roller 132 provided at both ends of the support frame 2, and a left-offset tensioning roller 133 and a right-offset tensioning roller 134 symmetrically provided in the middle of the support frame. The pre-tightening force of the conveyor belt 8 can be flexibly controlled in four directions, effectively avoiding wear caused by over-tightening and slipping caused by over-loosening.

[0034] The frame 1 of the present invention is welded from steel sheet metal parts, and the supporting frame 2 cooperating with it is welded from high-strength lightweight aluminum alloy plates. It is integrally in a rectangular frame structure and is fixed on the ground through adjustable legs, which not only ensures the stability of the equipment during operation but also facilitates height adjustment according to site requirements. At the same time, it has both rigidity and weight reduction effects; the four rollers included in the roller-type tensioning mechanism 13 are symmetrically distributed at both ends and the middle part of the bottom of the conveyor belt 8, so as to apply different tensions to the conveyor belt 8 under different working conditions to properly pre-tighten the conveyor belt 8, effectively avoiding risks such as increased wear, slipping failure, and belt deviation of the conveyor belt 8 caused by insufficient or over-pre-tightening of the conveyor belt 8, and greatly extending the service life of the conveying device;

[0035] As Figure 3 shown, the detection device 3 includes an information acquisition bracket 31 arranged in the middle part of the supporting frame 2. The center part of the upper end face of the information acquisition bracket 31 is provided with a camera support plate 32, and the center part of the camera support plate 32 is provided with a hemispherical high-precision industrial camera 33. A Hikvision industrial camera is adopted, which communicates with the industrial computer through Gigabit Ethernet and has the function of real-time defect recognition by built-in deep learning.

[0036] As Figure 4As shown in the figure, the limit plate driving mechanism 4 includes a support frame 41 and limit end plates 42 provided at both ends of the support frame 41. A servo motor 43 is provided in the middle part of the support frame. The output shaft of the servo motor is connected to a transmission lead screw 44. Limit guide rods 45 are provided on both sides of the transmission lead screw 44. Two sets of translation pedestals 46 are provided at both ends of the limit guide rods 45 and the transmission lead screw 44 close to the limit end plates 42. A transfer frame 47 is provided above the translation pedestals. Connection end plates 48 are provided on the inner sides of the two sets of transfer frames 47. The connection end plates 48 are fixedly connected to the limit plate 7. A slider groove is provided at the lower end of the limit plate 7, forming a slider-rail structure with the slide rail above the support frame to realize the lateral translation of the limit plate 7. During operation, the lateral translation distance of the limit plate 7 is obtained through real-time recognition of the width of the transported cloth by the hemispherical high-precision industrial camera 33 and then through Gigabit Ethernet communication. Then, the obtained translation distance is communicated to the servo motor 43 and converted into the required number of turns of rotation, thereby controlling the translation of the translation pedestal 46 on the transmission lead screw 44 to realize the adjustment of the width of the limit plate 7. The limit plate 7 is inclined inward. There is a space between the bottom of the limit plate 7 and the conveyor belt 8. When the cloth is transported on the conveyor belt 8, both ends in the width direction are located between the limit plate 7 and the conveyor belt 8, and it can handle the cloth in the case of stacking and excessive slack in the actual production environment. Such cloth is prone to wrinkles and bulges. The limit plate 7 provides a certain lateral tension and support when the cloth passes through the detection area, and can eliminate the wrinkles and stacking of the cloth. The limit plate driving mechanism 4 can perform lateral position adjustment on the limit plate 7 according to the detected width of the cloth to realize effective pre-tightening and small-range deviation correction of the cloth. The cooperation between the limit plate 7 and the limit plate driving mechanism 4 can compact and flatten the edge of the cloth on the conveyor belt 8, reduce the local shadows and distortions caused by edge warping, reduce the noise of the industrial camera recognition image, and effectively improve the accuracy of the defect algorithm. Through the adjustment mechanism of the limit plate 7 and other mechanisms, an integrated intelligent control is formed, greatly improving the automation degree of the overall device, ensuring the continuity of production, and having outstanding value for large-scale and continuous cloth detection production lines.

[0037] Embodiment 2:

[0038] Different from the above embodiment, as Figure 2 shown, in this embodiment, a master control box 6 is provided at the front end of the support frame 2. The master control box 6 is used for the electrical connection of the limit driving mechanism 4 and the driving device 12 of the driving roller, and the communication connection between the detection device 3 and the limit plate driving mechanism 4, such as the driving of the variable-frequency motor 5 and the input of the real-time width of the cloth by the hemispherical high-precision industrial camera 33 to the master control box 6.

[0039] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A fabric defect quality inspection device, characterized in that, Including: A frame (1), on which a support frame (2) is provided; on the support frame (2), a transport device (11) is provided for transporting cloth; above the transport device (11), a detection device (3) is provided for detecting the cloth.

2. The cloth defect quality inspection device according to claim 1, wherein, The transport device (11) includes a driving roller (9) and a driven roller (10) respectively arranged at two ends of the support frame (2); the driving roller (9) and the driven roller (10) are connected by a conveyor belt (8) in a transmission connection; beside the driving roller (9), a driving device (12) of the driving roller is provided for driving the driving roller (9) to move.

3. The fabric defect quality inspection device according to claim 2, characterized in that, The detection device (3) includes an information collection support (31) arranged above the middle position of the support frame (2), on the information collection support (31), a camera support plate (32) is provided, and at the bottom of the camera support plate (32), a hemispherical high-precision industrial camera (33) is provided.

4. The fabric defect quality inspection device according to claim 3, characterized in that, At both ends in the width direction above the conveyor belt (8), limit plates (7) are provided, and on the support frame (2), a limit driving mechanism (4) is provided for adjusting the distance between the two limit plates (7).

5. The cloth defect quality inspection device according to claim 4, characterized in that, The limit driving mechanism (4) includes a support frame (41) arranged at the bottom of the support frame (2); at both ends of the support frame (41), limit end plates (42) are provided, in the middle part of the support frame (41), a servo motor (43) is provided, the output shaft of the servo motor (43) is connected with a transmission lead screw (44), and beside the transmission lead screw (44), a limit guide rod (45) is provided; At both ends of the limit guide rod (45) and the transmission lead screw (44) near the limit end plates (42), translation pedestals (46) are provided, above the translation pedestals (46), a transfer frame (47) is provided, on the inner sides of the two groups of transfer frames (47), a connection end plate (48) is provided, the connection end plate (48) is connected with the limit plate (7), and the limit plate (7) is slidably connected with the slide rail above the support frame (2) through a slide block groove arranged at the lower end.

6. The cloth defect quality inspection device according to claim 5, wherein, Below the support frame (2), a roller type tensioning mechanism (13) is provided, the roller type tensioning mechanism (13) includes a left end tensioning roller (131) and a right end tensioning roller (132) respectively arranged at both ends of the bottom of the support frame (2) and a left offset tensioning roller (133) and a right offset tensioning roller (134) symmetrically arranged in the middle of the support frame (2).

7. The cloth defect quality inspection device according to claim 6, characterized in that, The frame (1) is welded by steel sheet metal parts and has a rectangular frame structure; at the bottoms of the four corners of the frame (1), legs with adjustable heights are provided, and the bottoms of the legs are fixed to the ground through anchor bolts.

8. The cloth defect quality inspection device according to claim 7, characterized in that, The support frame (2) is welded by high-strength lightweight aluminum alloy plates.

9. The fabric defect quality inspection device according to claim 8, characterized in that, The support frame (2) is fixed to the upper part of the frame (1) by bolts.

10. The fabric defect quality inspection device according to claim 9, characterized in that, At the front end of the support frame (2), a master control box (6) is provided, and the master control box (6) is electrically connected with the limit driving mechanism (4), the driving device (12) of the driving roller, and the detection device (3).

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