Visual defect detection equipment and detection method for all-cotton gray fabric production

Abstract

The invention relates to the technical field of textile production equipment, in particular to visual flaw detection equipment for all-cotton gray fabric production and a detection method.The visual flaw detection equipment comprises a detection table, a feeding base is arranged on one side of the upper end of the detection table, a collecting frame is arranged on the other side of the upper end of the detection table, and a detection frame is further arranged at the upper end of the detection table; the detection frame is located between the feeding base and the material collecting frame, and a feeding device is arranged on the feeding base. During discharging, gray fabric roll materials roll between the feeding rollers, the feeding rollers jointly fix the gray fabric roll materials without affecting drawing out of gray fabric, the gray fabric roll materials are located between the feeding base and the feeding pressing plate, and when the pressing plate is pressed downwards, under the action of the pressing spring, when the gray fabric is drawn out, the gray fabric roll materials cannot be separated from the feeding groove.

Description

Technical Field

[0001] The present application relates to the technical field of textile production equipment, and in particular to a visual defect detection device and a detection method for the production of pure cotton grey fabrics. Background Art

[0002] Pure cotton grey cloth refers to pure cotton natural color fabric used for printing and dyeing. In the process of manufacturing grey cloth, defects such as weft doubling and warp breakage will affect the processing and use of the fabric. In order to ensure that the quality of the processed grey cloth meets the use standards, the visual inspection device is used to monitor the quality of the cloth in real time, and every defect on the grey cloth is detected in real time, which helps the staff to find quality problems on the grey cloth and improve the quality of subsequent processing of the grey cloth.

[0003] Existing defect detection devices can detect defects and alarm for textiles, such as a defect detection device for textile production with publication number CN214122029U. By setting a response component, a data collector collects detection information from a camera, and an IC chip processes the detection information. When serious quality problems occur, the IC chip controls a buzzer to sound an alarm, so that staff can discover serious quality problems at the first time, thereby improving the functionality of the detection device; by setting a guide roller, the guide roller guides and supports the textile, so that the distance between the textile and the camera is always the same when the textile passes under the camera, thereby ensuring the detection quality of the detection component and avoiding the phenomenon of textile deflection, thereby ensuring the normal operation of the detection device.

[0004] However, the above-mentioned prior art still has some defects in the defect detection of pure cotton grey cloth: 1. The above-mentioned prior art drives the unwinding roller and the winding roller to rotate through a driving motor to realize the unwinding and winding of the textile, but in the actual detection process, it is usually necessary to detect the grey cloth roll without a winding core. When performing this detection, the grey cloth needs to be wound around the unwinding roller before it can be unwound and detected. There is still room for improvement in the unwinding method in defect detection.

[0005] 2. The above-mentioned prior art detects the grey cloth by means of cameras installed at both ends of the front side below the mounting plate. However, since the above-mentioned prior art fails to avoid the influence of external light sources during detection, there may be a problem of false alarm of defects during detection, and it is difficult to detect some defects that are not easy to detect against light, such as sparse and dense lines, missing warps and wefts.

[0006] Based on this, and in accordance with the above-mentioned viewpoints, the existing technology for detecting defects in pure cotton grey fabrics still has room for improvement. Summary of the invention

[0007] In order to solve the above technical problems, the present application provides a visual defect detection device and detection method for pure cotton grey fabric production, which adopts the following technical solutions:

[0008] In the first aspect, the present invention provides a visual defect detection device for the production of pure cotton grey cloth, comprising an inspection table, wherein a loading seat is provided on one side of the upper end of the inspection table, and a receiving rack is provided on the other side. A detection frame is also provided on the upper end of the inspection table, and the detection frame is located between the loading seat and the receiving rack, and a loading device is provided on the loading seat.

[0009] Preferably, the feeding device includes sliding columns arranged at the four corners of the upper end of the feeding seat, and the sliding columns are slidably connected to a feeding pressure plate. The lower end of the feeding pressure plate and the upper end of the feeding seat are both provided with a feeding trough, and the feeding trough is rotatably installed with evenly arranged feeding rollers. The sliding columns are also slidably connected to a lower pressure plate, and the sliding columns are all provided with a downward pressure spring, and the downward pressure spring connects the upper end of the feeding pressure plate and the lower end of the lower pressure plate.

[0010] Preferably, a guide device is provided between the loading seat and the detection frame, and the guide device comprises a guide frame symmetrically installed on the upper end of the detection table, and the guide frame is located between the loading seat and the detection frame.

[0011] Preferably, a guide roller is rotatably installed in the guide frame, a flip arm is hinged on one of the guide frames, an adjusting column is threadedly connected to the middle part of the flip arm, and an adjusting handle is arranged on the upper end of the adjusting column.

[0012] Preferably, the guide device also includes a positioning assembly arranged at the lower end of the flip arm, and the positioning assembly includes telescopic columns symmetrically arranged at the lower end of the flip arm, and an adjusting upper plate is slidably connected to the telescopic columns, and the adjusting upper plate is rotatably connected to the lower end of the adjusting column.

[0013] Preferably, the lower ends of the telescopic columns are commonly connected to an adjustable lower plate, positioning springs are sleeved on the outsides of the telescopic columns, and the positioning springs connect the lower end of the adjustable upper plate and the upper end of the adjustable lower plate, mounting blocks are provided at both ends of the adjustable lower plate, and positioning rollers are symmetrically mounted on the mounting blocks for rotation.

[0014] Preferably, a locking protrusion is provided at the hinged portion of the flip arm away from the flip arm and the guide frame, and a connecting groove is provided at the upper end of the guide frame facing the locking protrusion.

[0015] Preferably, the side end of the guide frame with a connecting groove is also provided with a positioning column extending into the connecting groove, and the positioning column is connected to the guide frame by a thread, a locking plate is slidably connected in the connecting groove, and the locking plate is rotatably connected to one end of the positioning column facing the connecting groove.

[0016] Preferably, a connecting device is provided between the flip arm and the lower pressure plate, and the connecting device includes a connecting block arranged at the upper end of the lower pressure plate, a connecting hole is opened at the side end of the connecting block, a connecting slider is slidably installed in the connecting hole, and connecting columns are provided at the ends of the connecting block and the flip arm facing each other, and the two connecting columns are respectively hinged at both ends of the connecting rod.

[0017] Preferably, a detection device is provided in the detection frame, and the detection device includes a defect detection head installed on the upper wall inside the detection frame, light-shielding telescopic plates are respectively provided at the openings at both ends of the detection frame, and a detection frame is slidably installed on the upper end of the detection frame.

[0018] In a second aspect, the present invention further provides a method for visual defect detection for production of pure cotton grey fabrics, the detection method comprising the following steps:

[0019] S1: Lift the flip arm, and at the same time, the lower pressing plate slides upward driven by the connecting rod to place the grey cloth roll between the loading seat and the loading pressing plate;

[0020] S2: Take out one end of the grey cloth and pass it through the detection frame, pass it over the support roller, and fix it on the receiving rod, then turn the flip arm downward, and turn the positioning column to keep the flip arm in a horizontal state;

[0021] S3: The loading pressing plate presses down to fix the grey cloth roll, and the grey cloth is stuck between the positioning roller and the guide roller, and then the adjustment handle is turned according to the thickness of the grey cloth;

[0022] S4: Pull down the light-shielding telescopic plate, and the defect detection head performs optical detection on the grey cloth and generates a detection report.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. In the present invention, when unloading, the grey cloth roll rolls between the feeding rollers, and the feeding rollers jointly fix the grey cloth roll without affecting the drawing out of the grey cloth, and the grey cloth roll is located between the feeding seat and the feeding pressing plate, and when the lower pressing plate is pressed down, under the action of the pressing spring, when the grey cloth is drawn out, the grey cloth roll will not fall out of the feeding trough.

[0025] 2. The present invention rotates the rotating handle to slide the detection frame up and down. The sliding frame is restricted by the sliding groove, so that the lighting lamp shines directly downward or transmits light upward to the grey cloth to detect defects that are easily found when facing the light or transmitting light. During the detection, the light-shielding telescopic plate is pulled down to prevent external light spots from affecting the detection results.

[0026] 3. The present invention rotates the adjustment handle according to the thickness of the grey cloth. Under the cooperation of the thread of the adjustment column and the flip arm, the positioning roller and the guide roller flatten and unfold the grey cloth, and the supporting roller ensures the longitudinal tension state of the grey cloth to ensure the defect detection effect. After the detection is completed, the material receiving rod is pulled out to complete the recovery of the grey cloth roll. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention.

[0028] Figure 2 It is a structural schematic diagram of the feeding device of the present invention.

[0029] Figure 3 It is a structural schematic diagram of the guide device of the present invention.

[0030] Figure 4 It is a schematic diagram of the structure among the locking protrusion, the connecting groove, the positioning column and the locking plate of the present invention.

[0031] Figure 5 It is a structural schematic diagram of the connecting device of the present invention.

[0032] Figure 6 It is a schematic structural diagram of the detection device of the present invention.

[0033] Figure 7 It is a structural schematic diagram of the lighting assembly of the present invention.

[0034] Figure 8 It is a structural schematic diagram of the dimming device of the present invention.

[0035] Fig. 9 It is a structural schematic diagram of the worm gear mechanism of the present invention.

[0036] Fig.10 It is a structural schematic diagram of the supporting device of the present invention.

[0037] Fig.11 It is a structural schematic diagram of the material receiving device of the present invention.

[0038] 1. Test table; 2. Loading seat; 3. Material receiving rack; 4. Test frame; 5. Loading device; 6. Sliding column; 7. Loading pressure plate; 8. Loading trough; 9. Loading roller; 10. Lower pressure plate; 11. Lower pressure spring; 12. Guide device; 13. Guide frame; 14. Guide roller; 15. Adjustment column; 16. Adjustment handle; 17. Positioning assembly; 18. Telescopic column; 19. Adjustment upper plate; 20. Adjustment lower plate; 21. Positioning spring; 22. Mounting block; 23. Positioning roller; 24. Positioning column; 25. Positioning plate; 26. Connecting groove; 27. Connecting column; 28. Connecting plate; 29. ​​Connecting column; 30. Connecting rod; 31. Test table; 32. Loading seat; 33. Loading rack; 34. Loading roller; 35. Lower pressure plate; 36. Lower pressure spring; 36. Guide device; 31. Guide frame; 32. Guide roller; 33. Turning arm; 34. Adjustment column; 35. Adjustment handle; 36. Positioning assembly; 361. Telescopic column; 362. Adjustment upper plate; 363. Adjustment lower plate; 364. Positioning spring; 365. Mounting block; 366. Positioning roller; 367. Positioning protrusion; 368. Connecting groove; 369. Positioning column; 3610. Positioning plate; 4. Connecting device; 41. Connecting block; 42. Connecting hole; 43. Connecting slider; 44. Connecting column; 45. Connecting rod; 5. Test Detection device; 51. defect detection head; 52. light shielding telescopic plate; 53. detection frame; 54. lighting assembly; 541. mounting frame; 542. lighting lamp; 543. mounting slide cylinder; 544. sliding bar; 545. sliding frame; 546. sliding groove; 6. dimming device; 61. adjustment hole; 62. threaded rod; 63. worm gear mechanism; 631. mounting cover; 632. adjusting worm gear; 633. adjusting worm; 64. first bevel gear; 65. adjusting shaft; 66. second bevel gear; 67. rotating handle; 7. supporting device; 71. supporting frame; 72. mounting hole; 73. supporting block; 74. supporting spring; 75. supporting roller; 8. material receiving device; 81. rotating cylinder; 82. driving motor; 83. material receiving rod; 84. fixing slide plate; 85. connecting strip; 86. fixing column. DETAILED DESCRIPTION

[0039] The following is combined with Figures 1 to 11 This application is described in further detail.

[0040] The embodiment of the present application discloses a visual defect detection device and detection method for the production of pure cotton grey fabric. After the grey fabric roll is placed, the grey fabric roll is imaged using a front light source or a back light source to detect various types of defects on the grey fabric roll so as to grade the quality of the grey fabric roll.

[0041] refer to Figure 1 A visual defect detection device for pure cotton grey fabric production includes a detection table 11, a loading seat 12 is arranged on one side of the upper end of the detection table 11, and a receiving rack 13 is arranged on the other side. A detection frame 14 is also arranged on the upper end of the detection table 11. The grey fabric passes through the detection frame 14 for defect detection, and the detection frame 14 is located between the loading seat 12 and the receiving rack 13.

[0042] The grey cloth roll is first mounted on the loading seat 12, and then is detected by the internal device of the detection frame 14, and the device on the receiving rack 13 collects the grey cloth after the detection.

[0043] refer to Figure 2 , is a schematic diagram of the structure of the feeding device 2 of the present invention, which is used to fix the grey cloth roll to be inspected for defects. The feeding device 2 is arranged on the feeding seat 12, and the feeding device 2 includes sliding columns 21 arranged at the four corners of the upper end of the feeding seat 12, and the sliding columns 21 are slidably connected with a feeding pressing plate 22. The lower end of the feeding pressing plate 22 and the upper end of the feeding seat 12 are both provided with a feeding trough 23. When feeding, the grey cloth roll is placed in the feeding trough 23, and a rotating shaft is installed in the feeding trough 23. The evenly arranged feeding rollers 24 detect the grey cloth. When the grey cloth is pulled out, the grey cloth roll rolls between the feeding rollers 24, which does not affect the pulling out of the grey cloth. The sliding column 21 is also slidably connected with a lower pressure plate 25. The sliding column 21 is sleeved with a downward pressure spring 26, and the downward pressure spring 26 connects the upper end of the feeding pressure plate 22 and the lower end of the lower pressure plate 25. The downward pressure spring 26 presses down the feeding pressure plate 22 to fix the grey cloth roll, and is separated from the feeding trough 23 when placed for testing.

[0044] The grey cloth roll is placed between the loading seat 12 and the loading pressure plate 22. When the lower pressure plate 25 is pressed down, the grey cloth roll is fixed under the action of the lower pressure spring 26. At the same time, when the grey cloth roll is detected, the grey cloth is pulled out and rolled between the loading rollers 24. The loading rollers 24 fix the grey cloth roll together without affecting the pulling out of the grey cloth.

[0045] refer to Figure 3 , is a schematic diagram of the structure of the guide device 3 of the present invention. When detecting the grey cloth, the grey cloth in the grey cloth roll is unfolded to prevent the wrinkles on the grey cloth roll from affecting the defect detection result. The guide device 3 is arranged between the loading seat 12 and the detection frame 14. The guide device 3 includes a guide frame 31 symmetrically installed on the upper end of the detection platform 11, and the guide frame 31 is located between the loading seat 12 and the detection frame 14. A guide roller 32 is rotatably installed in the guide frame 31, and a flip arm 33 is hinged on one of the guide frames 31. The flip arm 33 is lifted upward to facilitate placing the grey cloth on the guide roller 32. An adjusting column 34 is connected to the middle part of the flip arm 33 through a thread, and an adjusting handle 35 is arranged on the upper end of the adjusting column 34. When the adjusting handle 35 is rotated, the adjusting column 34 moves up and down.

[0046] Before inspecting the grey cloth, lift the flip arm 33 upwards to unfold the grey cloth and place it on the guide roller 32, then turn the adjusting handle 35 according to the thickness of the grey cloth, and with the threaded cooperation between the adjusting column 34 and the flip arm 33, the adjusting column 34 moves up and down in the flip arm 33 so that the components below the adjusting column 34 and the guide roller 32 can flatten and unfold the grey cloth.

[0047] refer to Figure 3 and Figure 4, is a structural schematic diagram of the positioning assembly 36 of the present invention. In order to ensure that the grey cloth is flattened when detecting the grey cloth, the guide device 3 also includes a positioning assembly 36 arranged at the lower end of the flip arm 33. The positioning assembly 36 includes a telescopic column 361 symmetrically arranged at the lower end of the flip arm 33. An adjusting upper plate 362 is slidably connected to the telescopic column 361, and the adjusting upper plate 362 is rotatably connected to the lower end of the adjusting column 34. The adjusting upper plate 362 slides up and down on the outer side of the telescopic column 361 driven by the adjusting column 34. The lower end of the telescopic column 361 is commonly connected to an adjusting lower plate 363. Positioning springs 364 are sleeved on the outer side of the telescopic column 361, and the positioning springs 364 are connected to the lower end of the adjusting upper plate 362 and the upper end of the adjusting lower plate 363. The upper and lower sliding of the adjusting upper plate 362 drives the adjusting lower plate 363 to slide up and down through the positioning springs 364. Both ends of the adjusting lower plate 363 A mounting block 365 is provided, on which a positioning roller 366 is symmetrically mounted for rotation. The positioning roller 366 and the guide roller 32 jointly keep the grey cloth flat. A locking protrusion 367 is provided at the hinge between the flip arm 33 and the guide frame 31 away from the flip arm 33. A connecting groove 368 is provided at the upper end of the guide frame 31 facing the locking protrusion 367, and a positioning column 369 penetrating into the connecting groove 368 is further provided at the side end of the guide frame 31. The positioning column 369 is connected to the guide frame 31 through a threaded connection, and a locking plate 3610 is slidably connected in the connecting groove 368, and the locking plate 3610 is rotatably connected to the end of the positioning column 369 facing the connecting groove 368. When the positioning column 369 is rotated, the locking plate 3610 slides to maintain or release the state of locking the locking protrusion 367, thereby maintaining or releasing the horizontal state of the flip arm 33.

[0048] After the grey cloth is unfolded and placed on the guide roller 32, the flip arm 33 is rotated downward to make the flip arm 33 horizontal, and then the positioning column 369 is rotated. Under the threaded cooperation of the positioning column 369 and the guide frame 31, the locking plate 3610 slides axially along the positioning column 369 to lock the locking protrusion 367 to keep the flip arm 33 in a horizontal state, and then the adjusting column 34 is rotated. When the adjusting column 34 moves downward in the flip arm 33 through threaded cooperation, the upper plate 362 is adjusted to slide downward on the telescopic column 361, and the lower plate 363 is adjusted to be pressed downward by the positioning spring 364, so that the positioning roller 366 generates downward pressure on the grey cloth, and the positioning roller 366 and the guide roller 32 jointly keep the grey cloth flat on the guide roller 32.

[0049] refer to Figure 5, is a structural schematic diagram of the connecting device 4 of the present invention. In order to fix the grey cloth roll while positioning the grey cloth, a connecting device 4 is arranged between the flip arm 33 and the lower pressing plate 25. The connecting device 4 includes a connecting block 41 arranged at the upper end of the lower pressing plate 25. A connecting hole 42 is opened at the side end of the connecting block 41. A connecting slider 43 is slidably installed in the connecting hole 42. A connecting column 44 is arranged at one end of the connecting block 41 and the flip arm 33 facing each other. The two connecting columns 44 are respectively hinged to the two ends of the connecting rod 45.

[0050] When the flip arm 33 is rotated upward, the connecting slider 43 is driven by the connecting rod 45 to slide to the end of the connecting hole 42 facing the middle of the lower pressure plate 25, and then the lower pressure plate 25 is slid upward, thereby lifting the loading pressure plate 22 to place the grey cloth roll. When the flip arm 33 is rotated downward, the connecting slider 43 is driven by the connecting rod 45 to slide to the end of the connecting hole 42 away from the middle of the lower pressure plate 25, and at the same time, the lower pressure plate 25 is slid downward to fix the grey cloth roll through the loading pressure plate 22.

[0051] refer to Figure 6 , is a schematic diagram of the structure of the detection device 5 of the present invention. In order to detect defects on the grey cloth, the detection device 5 is arranged in the detection frame 14. The detection device 5 includes a defect detection head 51 installed on the upper wall inside the detection frame 14, which is used to detect defects on the grey cloth through images to generate a detection report. Light-shielding telescopic plates 52 are respectively arranged at the openings at both ends of the detection frame 14 to prevent external light sources from interfering with the defect detection of the grey cloth in the detection frame 14. A detection frame 53 is slidably installed on the upper end of the detection frame 14.

[0052] refer to Figure 7 , is a structural schematic diagram of the lighting assembly 54 of the present invention. In order to supplement the light source when detecting defects in the grey cloth and help make a more accurate judgment on the defects on the grey cloth, the lighting assemblies 54 are symmetrically arranged on both sides of the lower end of the detection frame 53. The lighting assembly 54 includes mounting frames 541 symmetrically hinged by torsion springs (not shown in the figure) on both sides of the lower end of the detection frame 53. The torsion spring keeps the mounting frame 541 in a horizontal state. Illuminating lamps 542 are evenly installed on the mounting frame 541 to provide the light source required for detecting defects. Mounting slides 543 are hinged at both ends of the mounting frame 541. A sliding bar 544 is slidably connected in the mounting slide 543. The mounting slide 543 and the sliding bar 544 are horizontally arranged. The end of the sliding bar 544 away from the mounting slide 543 is commonly connected to a sliding frame 545. Sliding grooves 546 are opened on the inner side walls of the detection frame 53, and the sliding frame 545 is slidably connected to the sliding grooves 546.

[0053] When it is necessary to detect defects that are easy to find when looking against the light, that is, when the front light source is projected, the detection frame 53 is slid upward, and the sliding frame 545 is driven to move to the upper end of the sliding groove 546 by installing the slide cylinder 543 and the sliding bar 544, and then the detection frame 53 continues to move upward, and the sliding frame 545 is located below the mounting frame 541 under the restriction of the sliding groove 546, so that the illuminating lamp 542 projects the illumination to the grey cloth downward, and the defect detection head 51 detects defects on the grey cloth against the light. When it is necessary to detect defects that are easy to find when looking through the light, that is, when the backlight is illuminated, the detection frame 53 is slid downward, and the sliding frame 545 is driven to move to the lower end of the sliding groove 546 by installing the slide cylinder 543 and the sliding bar 544, and then the detection frame 53 continues to move downward, and the sliding frame 545 is located above the mounting frame 541 under the restriction of the sliding groove 546, so that the illuminating lamp 542 projects the illumination to the grey cloth upward, and the defect detection head 51 detects defects on the grey cloth through the light.

[0054] refer to Figure 8 , is a structural schematic diagram of the dimming device 6 of the present invention. In order to adjust the position and incident angle of the illuminating lamp 542, a dimming device 6 is provided on one side of the detection frame 53. The dimming device 6 includes an adjusting hole 61 opened at the side end of the detection frame 53. A threaded rod 62 is vertically provided in the adjusting hole 61, and the threaded rod 62 connects the upper and lower ends of the adjusting hole 61. A worm gear mechanism 63 is installed on the side wall of the detection frame 14, and the output end of the worm gear mechanism 63 is connected to the threaded rod 62 through a thread, so that it is more labor-saving to adjust the detection frame 53 up and down. The input end of the worm gear mechanism 63 is connected to the first bevel gear 64, and an adjusting shaft 65 is rotatably installed on the side wall of the detection frame 14. A second bevel gear 66 is installed at one end of the adjusting shaft 65 facing the detection frame 53, and the first bevel gear 64 and the second bevel gear 66 are meshed with each other. A rotating handle 67 is installed at one end of the adjusting shaft 65 away from the detection frame 53 to facilitate the rotation of the adjusting shaft 65.

[0055] The rotating handle 67 is rotated to rotate the adjusting shaft 65 , and the input end of the worm gear mechanism 63 is driven under the meshing of the second bevel gear 66 and the first bevel gear 64 . The output end of the worm gear mechanism 63 is threadedly connected with the threaded rod 62 to move the detection frame 53 up and down.

[0056] refer to Fig. 9 , is a schematic diagram of the structure of the worm gear mechanism 63 of the present invention. The worm gear mechanism 63 includes a mounting cover 631 mounted on the side wall of the detection frame 14, and an adjusting worm wheel 632 and an adjusting worm 633 that mesh with each other are rotatably mounted in the mounting cover 631, and a first bevel gear 64 is mounted at one end of the adjusting worm 633, and the adjusting worm wheel 632 is connected to the threaded rod 62 through a thread.

[0057] The first bevel gear 64 drives the adjusting worm 633 to rotate, so as to drive the adjusting worm wheel 632 to rotate, and under the threaded connection between the adjusting worm wheel 632 and the threaded rod 62 , the detection frame 53 moves up and down.

[0058] refer to Fig.10 , is a structural schematic diagram of the support device 7 of the present invention. In order to ensure the longitudinal tension state of the grey cloth when detecting the grey cloth and ensure the defect detection effect, a support device 7 is arranged between the detection frame 14 and the material receiving rack 13. The support device 7 includes support frames 71 symmetrically arranged on both sides of the detection platform 11. Both support frames 71 are provided with mounting holes 72. Support blocks 73 are slidably connected in the mounting holes 72. The lower end of the support block 73 is connected to the bottom of the mounting hole 72 through a support spring 74. Support rollers 75 are installed in the two support blocks 73 for common rotation. After the grey cloth passes the detection, it is transmitted to the top of the support roller 75. At the same time, the support spring 74 provides the tensioning force required for the grey cloth to ensure that the grey cloth is in a tensioned state and prevent bending and folding on the grey cloth from affecting the detection.

[0059] refer to Fig.11 , is a structural schematic diagram of the material receiving device 8 of the present invention. In order to recycle the inspected grey cloth into rolls, a material receiving device 8 is installed on the material receiving rack 13. The material receiving device 8 includes a rotating drum 81 rotatably installed on the material receiving rack 13, a driving motor 82 is installed on one side of the material receiving rack 13, and the output shaft of the driving motor 82 is connected to one of the rotating drums 81, and a material receiving rod 83 is slidably installed on the rotating drum 81, and the material receiving rod 83 can be removed from the rotating drum 81, and a fixed slide plate 84 is slidably provided on the side of the material receiving rack 13 away from the driving motor 82, which is used to prevent the material receiving rod 83 from sliding off the rotating drum 81 when inspecting the grey cloth, one of the fixed slide plates 84 is hinged at the upper end with a connecting strip 85, and the other fixed slide plate 84 is installed at the upper end with a fixing column 86, the connecting strip 85 and the fixing column 86 cooperate with each other to close the two fixed slide plates 84 to resist one end of the material receiving rod 83 to prevent it from sliding off.

[0060] Before detecting defects in the grey cloth, the fixed slides 84 are slid toward each other and the connecting strips 85 are locked to the fixed posts 86 to prevent the fixed slides 84 from separating, so as to fix the receiving rod 83 on the two rotating cylinders 81 and wrap one end of the grey cloth around the receiving rod 83 so that the grey cloth can be gradually wrapped around the receiving rod 83 to form a roll. When detecting defects in the grey cloth, the driving motor 82 drives the rotating cylinder 81 to rotate, and then the receiving rod 83 is rotated to rotate the grey cloth so that the grey cloth is wrapped around the receiving rod 83. When the grey cloth is inspected and bent and wrapped around the receiving rod 83, the connecting strips 85 are separated from the restriction of the fixed posts 86, the fixed slides 84 are relatively slid, and then the receiving rod 83 is pulled out, and the grey cloth roll can be removed from the receiving rack 13.

[0061] In addition, the present invention also provides a visual defect detection method for pure cotton grey fabric production, and the detection method comprises the following steps:

[0062] S1: lift the flip arm 33, and the connecting slider 43, driven by the connecting rod 45, slides to the end of the middle of the lower pressing plate 25 facing the connecting hole 42, and then the lower pressing plate 25 slides upward, thereby lifting the loading pressing plate 22, so that the grey cloth roll can be placed between the loading seat 12 and the loading pressing plate 22.

[0063] S2: Take out one end of the grey cloth and pass it through the detection frame 14, and pass it over the support roller 75. The support roller 75 ensures that the grey cloth is in a tensioned state to prevent bending and folding on the grey cloth that affect the detection. Wrap one end of the grey cloth around the material receiving rod 83, rotate the flip arm 33 downward, rotate the positioning column 369, and with the threaded cooperation between the positioning column 369 and the guide frame 31, the locking plate 3610 slides axially along the positioning column 369 to lock the locking protrusion 367, so that the flip arm 33 remains in a horizontal state.

[0064] S3: When the flip arm 33 is rotated downward, the loading plate 22 is finally driven by the connecting rod 45 to slide downward, and the loading plate 22 presses down to fix the grey cloth roll, and the setting of the loading roller 24 does not affect the rolling unloading of the grey cloth roll. Then, the adjusting handle 35 is rotated according to the thickness of the grey cloth. Under the threaded cooperation of the adjusting column 34 and the flip arm 33, the positioning roller 366 and the guide roller 32 flatten and unfold the grey cloth.

[0065] S4: Rotate the rotating handle 67 to slide the detection frame 53 up and down. The sliding frame 545 is restricted by the sliding groove 546, so that the lighting lamp 542 shines directly downward or transmits light upward to illuminate the grey cloth, and the light-shielding telescopic plate 52 is pulled down to prevent external light spots from affecting the detection results. After ensuring that the fixed slide plate 84 restricts the sliding of the material receiving rod 83, the driving motor 82 drives the material receiving rod 83 to rotate so that the grey cloth is wrapped around the material receiving rod 83 for detection.

[0066] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A visual defect detection device for pure cotton grey fabric production, comprising a detection table (11), wherein a feeding seat (12) is arranged on one side of the upper end of the detection table (11), and a receiving rack (13) is arranged on the other side, and a detection frame (14) is also arranged on the upper end of the detection table (11), and the detection frame (14) is located between the feeding seat (12) and the receiving rack (13), characterized in that: The loading seat (12) is provided with a loading device (2); The feeding device (2) comprises sliding columns (21) arranged at the four corners of the upper end of the feeding seat (12), and a feeding pressure plate (22) is slidably connected to the sliding columns (21), and a feeding trough (23) is provided at the lower end of the feeding pressure plate (22) and the upper end of the feeding seat (12), and evenly arranged feeding rollers (24) are rotatably installed in the feeding trough (23), and a lower pressure plate (25) is also slidably connected to the sliding columns (21), and a lower pressure spring (26) is sleeved on the sliding columns (21), and the lower pressure spring (26) connects the upper end of the feeding pressure plate (22) and the lower end of the lower pressure plate (25).

2. The visual defect detection device for pure cotton grey fabric production according to claim 1, characterized in that: A guide device (3) is provided between the loading seat (12) and the detection frame (14), and the guide device (3) comprises a guide frame (31) symmetrically mounted on the upper end of the detection platform (11), and the guide frame (31) is located between the loading seat (12) and the detection frame (14).

3. The visual defect detection device for pure cotton grey fabric production according to claim 2, characterized in that: A guide roller (32) is rotatably mounted in the guide frame (31), a flip arm (33) is hinged on one of the guide frames (31), an adjusting column (34) is threadedly connected to the middle of the flip arm (33), and an adjusting handle (35) is arranged at the upper end of the adjusting column (34).

4. The visual defect detection device for pure cotton grey fabric production according to claim 3, characterized in that: The guide device (3) further comprises a positioning assembly (36) arranged at the lower end of the flip arm (33), the positioning assembly (36) comprising a telescopic column (361) symmetrically arranged at the lower end of the flip arm (33), an adjusting upper plate (362) being slidably connected to the telescopic column (361), and the adjusting upper plate (362) is rotatably connected to the lower end of the adjusting column (34).

5. The visual defect detection device for pure cotton grey fabric production according to claim 4, characterized in that: The lower ends of the telescopic columns (361) are commonly connected to an adjustable lower plate (363); positioning springs (364) are sleeved on the outer sides of the telescopic columns (361); and the positioning springs (364) are connected to the lower end of the adjustable upper plate (362) and the upper end of the adjustable lower plate (363); mounting blocks (365) are arranged at both ends of the adjustable lower plate (363); and positioning rollers (366) are symmetrically rotatably mounted on the mounting blocks (365).

6. The visual defect detection device for pure cotton grey fabric production according to claim 3, characterized in that: A locking protrusion (367) is provided at the hinged portion of the flip arm (33) and the guide frame (31), away from the flip arm (33), and a connecting groove (368) is provided at the upper end of the guide frame (31) facing the locking protrusion (367).

7. The visual defect detection device for pure cotton grey fabric production according to claim 6, characterized in that: The side end of the guide frame (31) provided with the connecting groove (368) is also provided with a positioning column (369) penetrating into the connecting groove (368), and the positioning column (369) is connected to the guide frame (31) by means of a thread, and a locking plate (3610) is slidably connected in the connecting groove (368), and the locking plate (3610) is rotatably connected to one end of the positioning column (369) facing the connecting groove (368).

8. The visual defect detection device for pure cotton grey fabric production according to claim 3, characterized in that: A connecting device (4) is provided between the flip arm (33) and the lower pressure plate (25), and the connecting device (4) comprises a connecting block (41) arranged at the upper end of the lower pressure plate (25), a connecting hole (42) is provided at the side end of the connecting block (41), a connecting slider (43) is slidably installed in the connecting hole (42), and a connecting column (44) is provided at the end of the connecting block (41) and the flip arm (33) facing each other, and the two connecting columns (44) are respectively hinged to the two ends of the connecting rod (45).

9. The visual defect detection device for pure cotton grey fabric production according to claim 1, characterized in that: A detection device (5) is arranged inside the detection frame (14), and the detection device (5) comprises a defect detection head (51) mounted on the inner upper wall of the detection frame (14), light shielding telescopic plates (52) are respectively arranged at the openings at both ends of the detection frame (14), and a detection frame (53) is slidably mounted on the upper end of the detection frame (14).

10. A method for visual defect detection for pure cotton grey fabric production, comprising a visual defect detection device for pure cotton grey fabric production according to any one of claims 1 to 9, characterized in that: S1: The turning arm (33) is lifted, and at the same time, the lower pressing plate (25) is driven by the connecting rod (45) to slide upward, and the grey cloth roll is placed between the loading seat (12) and the loading pressing plate (22); S2: Take out one end of the grey cloth, pass it through the detection frame (14), and pass it over the support roller (75), and fix it on the receiving rod (83), then rotate the turning arm (33) downward, and rotate the positioning column (369) to keep the turning arm (33) in a horizontal state; S3: The loading pressing plate (22) is pressed down to fix the grey cloth roll, and the grey cloth is stuck between the positioning roller (366) and the guide roller (32), and then the adjustment handle (35) is rotated according to the thickness of the grey cloth; S4: Pull down the light-shielding telescopic plate (52), and use the defect detection head (51) to perform optical detection on the grey cloth.

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