Surface flaw defect detection device and method for carpet production

Abstract

The invention provides a surface flaw defect detection device and method for carpet production, and relates to the technical field of carpet detection. Two groups of rotary driving parts are mounted at the top of the mounting bottom plate; a flaw defect detection part is mounted at the top of the mounting bottom plate, and is positioned between the two groups of rotary driving parts; a reinspection judgment part is mounted on the flaw defect detection part; a grade confirmation part is mounted on the mounting bottom plate and the flaw defect detection part; when a row of image acquisition cameras on the left side do not detect flaws and defects at corresponding positions, sundries exist on lenses of a row of image acquisition cameras on the right side or sundries exist at the flaws and defects of the carpet; the problems that the carpet at the flaw defect position cannot be automatically rechecked generally, misjudgment is caused when sundries exist on the surface of the carpet or at the camera lens, and the flaw defect precision of the carpet is affected are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of carpet detection, and more specifically, particularly relates to a surface defect detection device and method for carpet production. Background Art

[0002] Carpets are floor coverings made of natural fibers such as cotton, linen, wool, grass yarn, or chemical synthetic fibers, which are knitted, flocked, or woven by hand or mechanical processes. Defects on the surface of the carpet will directly affect its appearance and touch. Through testing, these defects can be discovered and dealt with in a timely manner to ensure that the carpet meets high quality standards.

[0003] The currently used carpet surface defect detection device still has the following problems: 1. Carpets with defects generally cannot be automatically re-inspected. When there are debris on the carpet surface or at the camera lens, it will cause misjudgment, affecting the accuracy of carpet defect detection; 2. It is not possible to automatically record the defects of the carpet, which makes it inconvenient for the staff to find the location of the defects, affecting the efficiency of subsequent repairs; and it is not possible to automatically grade the carpets according to the number of defects, which is not conducive to subsequent discounted sales. Summary of the invention

[0004] The disclosed embodiments relate to a surface defect detection device and method for carpet production, which comprises a rotation drive unit, a defect detection unit, a re-inspection judgment unit and a grade confirmation unit; when a row of image acquisition cameras on the left side fails to detect a defect at a corresponding position, it indicates that there are debris on the lens of a row of image acquisition cameras on the right side or there are debris at the defect location of the carpet; the defect location of the carpet is recorded, which is convenient for staff to find the defect on the carpet later; it is convenient for staff to judge the grade of the carpet, which is conducive to the subsequent sale at a discount according to the grade; the problem of misjudgment when there are debris on the carpet surface or at the camera lens, inability to automatically record the defect of the carpet and inability to automatically grade the carpet according to the number of defect defects of the carpet is solved.

[0005] According to a first aspect of the present disclosure, there is provided a surface defect detection device for carpet production, which is used for detecting the surface of the carpet; the device comprises a mounting base; two groups of rotating drive parts are mounted on the top of the mounting base, and the two groups of rotating drive parts are used to move the carpet; a defect detection part is mounted on the top of the mounting base, and the defect detection part is located between the two groups of rotating drive parts; a control panel is mounted on the front side of the defect detection part; a re-inspection and judgment part is mounted on the defect detection part, and the re-inspection and judgment part is used to improve the detection accuracy of the defect detection part; a grade confirmation part is mounted on the mounting base and the defect detection part, and the grade confirmation part is used to confirm the grade of the carpet after detection.

[0006] In at least some embodiments, the rotary drive unit includes: a mounting plate, a rotary drive roller, a servo motor and a connecting gear; there are two mounting plates, and the two mounting plates are mounted on the top of the mounting base plate by screws; there are two rotary drive rollers, and the two rotary drive rollers are rotatably mounted on the mounting plate; the servo motor is mounted on the front mounting plate by screws, and the output shaft of the servo motor is also fixedly connected to the rotary drive roller below, and the servo motor is also electrically connected to the control panel; there are two connecting gears, and the two connecting gears are fixedly mounted on the rear ends of the two rotary drive rollers, and the two connecting gears are meshed and connected.

[0007] In at least some embodiments, the flaw defect detection unit includes: a U-shaped frame; the U-shaped frame is installed on the top of the mounting base plate by screws, and a triangular observation mark is provided on the front side of the U-shaped frame, and a circle of arc-shaped grooves is also provided on the front side of the U-shaped frame.

[0008] In at least some embodiments, the flaw defect detection unit also includes: a supporting plate, an image acquisition camera and a limit knob; the supporting plate is fixedly mounted on the U-shaped frame; the image acquisition cameras are arranged in two rows, and the two rows of image acquisition cameras are slidably mounted on the U-shaped frame, and the two rows of image acquisition cameras are also electrically connected to the control panel; the limit knobs are arranged in two rows, and the two rows of limit knobs are threadedly connected to the U-shaped frame, and the inner ends of the two rows of limit knobs are in contact with the two rows of image acquisition cameras.

[0009] In at least some embodiments, the re-inspection and judgment part includes: an H-shaped movable frame, a cleaning brush and a coil spring; the H-shaped movable frame is slidably installed on a U-shaped frame; the cleaning brush is fixedly installed at the bottom of the H-shaped movable frame; there are two coil springs in total, and the two coil springs are sleeved on the outside of the H-shaped movable frame, and the two coil springs are located above the U-shaped frame.

[0010] In at least some embodiments, the re-inspection and judgment unit also includes: a mounting bar, a linear electric cylinder A and a tilted sealing frame; the mounting bar is mounted on the U-shaped frame by screws; there are two linear electric cylinders A in total, and the two linear electric cylinders A are fixedly mounted on the mounting bar, and the two linear electric cylinders A are also electrically connected to the control panel; the tilted sealing frame is fixedly mounted on the output shafts of the two linear electric cylinders A, and the top of the tilted sealing frame is in contact with a row of image acquisition cameras on the left, and the bottom of the tilted sealing frame is in contact with the H-shaped movable frame.

[0011] In at least some embodiments, the level confirmation part includes: a movable recording seat, a ratchet mechanism and a movable positioning head; the movable recording seat is rotatably mounted on the U-shaped frame; the ratchet mechanism is fixedly mounted on the rear end of the movable recording seat; the movable positioning head is slidably mounted on the movable recording seat, and the rear end of the movable positioning head is provided with a rounded corner, and the rear end of the movable positioning head is inserted into the corresponding arc-shaped groove.

[0012] In at least some embodiments, the level confirmation part also includes: a reset spring, a linear electric cylinder B and a rectangular shell; the reset spring is sleeved on the outside of the movable positioning head, and the front end of the reset spring is fixedly connected to the movable positioning head, and the rear end of the reset spring is fixedly connected to the movable recording seat; there are two linear electric cylinders B in total, and the two linear electric cylinders B are fixedly installed on the top of the mounting base, and the two linear electric cylinders B are also electrically connected to the control panel; the rectangular shell is fixedly installed on the output shafts of the two linear electric cylinders B.

[0013] In at least some embodiments, the grade confirmation unit further includes: a linear rack and dye absorbing cotton; the linear rack is fixedly mounted on the bottom of the rectangular shell, and the linear rack is also meshed with a ratchet mechanism; the dye absorbing cotton is mounted inside the rectangular shell.

[0014] A method for detecting surface flaws in carpet production: 1) Pass the carpet to be tested through the two rotating drive rollers at the left and right ends, so that the bottom of the carpet contacts the supporting plate; 2) Start two servo motors and two rows of image acquisition cameras through the control panel. When the image acquisition cameras on the right side detect defects on the carpet, the control panel controls the output shafts of the two linear electric cylinders A to extend. Then, the control panel controls the output shafts of the two servo motors to rotate in the opposite direction, so that the carpet with defects moves in the opposite direction to the bottom of the image acquisition cameras on the left side. 3) When the carpet has passed the inspection of the row of image acquisition cameras on the left, the control panel controls the output shafts of the two linear electric cylinders A to retract, and then controls the output shafts of the two servo motors to rotate forward, so that the carpet with defects previously moved again to the bottom of the row of image acquisition cameras on the right; 4) When the carpet is found to have defects after re-inspection, the control panel controls the output shafts of the two linear electric cylinders B to extend, so that the dye absorbing cotton automatically contacts the bottom of the carpet; 5) When the carpet has defects after inspection, the grade of the carpet is determined according to the triangular observation mark. When the movable recording seat rotates more than one circle, it is treated as Class D grade; when the movable recording seat rotates less than one circle, the corresponding grade is determined according to the area pointed by the triangular observation mark.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, when the output shafts of the two servo motors rotate forward, the two lower rotating drive rollers rotate clockwise; when the output shafts of the two servo motors rotate reversely, the two lower rotating drive rollers rotate counterclockwise; the two upper rotating drive rollers can rotate in the opposite direction following the two lower rotating drive rollers, so that the carpet moves automatically under the action of the four rotating drive rollers, thereby realizing automatic detection of the carpet.

[0016] 2. The present invention facilitates the installation or removal of image acquisition cameras by the staff, and is conducive to timely replacement of damaged image acquisition cameras; two rows of image acquisition cameras are arranged, the right row of image acquisition cameras is used to detect the surface of the carpet, and the left row of image acquisition cameras is used to re-inspect the defects detected by the right row of image acquisition cameras; In addition, when the row of image acquisition cameras on the right detects that there are defects on the carpet, the control panel controls the output shafts of the two linear electric cylinders A to extend, so that the inclined sealing frame is separated from the row of image acquisition cameras on the left, and then the control panel controls the output shafts of the two servo motors to rotate in the opposite direction, so that the carpet with defects moves in the opposite direction to the bottom of the row of image acquisition cameras on the left; when the row of image acquisition cameras on the left detects that there are defects at the corresponding positions, it means that there are indeed defects at this position of the carpet, and when the row of image acquisition cameras on the left does not detect that there are defects at the corresponding positions, it means that there are debris on the lenses of the row of image acquisition cameras on the right or there are debris at the defective positions of the carpet; when the control panel controls the output shafts of the two linear electric cylinders A to extend, the H-shaped movable frame automatically moves downward under the action of the inclined sealing frame, so that the cleaning brush contacts the carpet first, ensuring that when the carpet moves in the opposite direction to the bottom of the row of image acquisition cameras on the left, the cleaning brush can automatically clean the defects, which is beneficial to the accurate detection of the row of image acquisition cameras on the left; Among them, when the carpet has completed the inspection by the row of image acquisition cameras on the left, the control panel controls the output shafts of the two linear electric cylinders A to retract, so that the inclined sealing frame contacts the row of image acquisition cameras on the left, thereby shielding and protecting the lenses of the row of image acquisition cameras on the left, and the H-shaped movable frame automatically resets upward under the action of two spiral springs; then the control panel controls the output shafts of the two servo motors to rotate forward, so that the carpet with defects previously moved to the bottom of the row of image acquisition cameras on the right again. When the row of image acquisition cameras on the right detects defects at corresponding positions, it indicates that there are debris on the lenses of the row of image acquisition cameras on the right; when the row of image acquisition cameras on the right does not detect defects at corresponding positions, it indicates that there are debris at the defects of the carpet before.

[0017] 3. When the carpet has defects after re-inspection, the control panel controls the output shafts of the two linear electric cylinders B to extend, so that the dye absorbing cotton automatically contacts the bottom of the carpet, which records the defects of the carpet, making it convenient for the staff to find the defects on the carpet later, which is conducive to improving the repair efficiency of the defects; In addition, it is convenient for the staff to judge the grade of the carpet. When the carpet has no defects after inspection, the carpet after production is qualified; when the carpet has defects after inspection, the grade of the carpet is judged according to the triangular observation mark, and when the movable recording seat rotates more than one circle, it is treated as Class D grade, which is conducive to subsequent discount sales according to grade; when the dye absorption cotton moves upward, the movable recording seat rotates a certain angle, and when the dye absorption cotton moves downward, the movable recording seat does not rotate under the resistance of the movable positioning head, thereby realizing the one-way automatic rotation of the movable recording seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0020] In the attached picture: Figure 1 A schematic diagram of the three-dimensional structure of the present invention is shown; Figure 2 The present invention is shown Figure 1 A schematic diagram of the structure from a rear side perspective; Figure 3 The structure diagram of the re-examination judgment unit of the present invention is shown; Figure 4 The present invention is shown Figure 1 Schematic diagram of the transverse central section structure; Figure 5 The present invention is shown Figure 4 A schematic diagram of the local enlarged structure of the middle A area; Figure 6 The present invention is shown Figure 1 Schematic diagram of the longitudinal central section structure; Figure 7 The present invention is shown Figure 6 A schematic diagram of the local enlarged structure of the middle B area; Figure 8 A schematic diagram showing the structure of the level confirmation unit of the present invention is shown; Fig. 9 The present invention is shown Figure 6 Schematic diagram of the local enlarged structure of the middle C area; Fig.10 The present invention is shown Figure 1 Schematic diagram of the local enlarged structure of area D in the middle.

[0021] List of reference numerals: 100. Install the base plate; 200, rotary drive unit; 201, mounting plate; 202, rotary drive roller; 203, servo motor; 204, connecting gear; 300, defect detection unit; 301, U-shaped frame; 3011, triangular observation mark; 3012, arc groove; 302, support plate; 303, image acquisition camera; 304, limit knob; 400. Control panel; 500. Carpet; 600, re-inspection judgment unit; 601, H-shaped movable frame; 602, cleaning brush; 603, spiral spring; 604, mounting bar; 605, linear electric cylinder A; 606, inclined sealing frame; 700, grade confirmation unit; 701, movable recording seat; 702, ratchet mechanism; 703, movable positioning head; 704, reset tension spring; 705, linear electric cylinder B; 706, rectangular housing; 707, linear rack; 708, dye absorbing cotton. DETAILED DESCRIPTION

[0022] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0023] Example: Please refer to Figures 1 to 10As shown: The present invention provides a surface defect detection device for carpet production, which is used to detect the surface of a carpet 500; it includes a mounting base 100; two groups of rotating drive parts 200 are installed on the top of the mounting base 100, and the two groups of rotating drive parts 200 are used to move the carpet 500; a defect detection part 300 is installed on the top of the mounting base 100, and the defect detection part 300 is located between the two groups of rotating drive parts 200; a control panel 400 is installed on the front side of the defect detection part 300; a re-inspection and judgment part 600 is installed on the defect detection part 300, and the re-inspection and judgment part 600 is used to improve the detection accuracy of the defect detection part 300; a grade confirmation part 700 is installed on the mounting base 100 and the defect detection part 300, and the grade confirmation part 700 is used to confirm the grade of the carpet 500 after detection.

[0024] In the present disclosure, Figure 1 and Figure 2 As shown, the rotary drive unit 200 includes: a mounting plate 201, a rotary drive roller 202, a servo motor 203 and a connecting gear 204; there are two mounting plates 201, and the two mounting plates 201 are mounted on the top of the mounting base plate 100 by screws; there are two rotary drive rollers 202, and the two rotary drive rollers 202 are rotatably mounted on the mounting plate 201; the servo motor 203 is mounted on the front mounting plate 201 by screws, and the output shaft of the servo motor 203 is also fixedly connected to the rotary drive roller 202 below, and the servo motor 203 is also electrically connected to the control panel 400; there are two connecting gears 204, and the two connecting gears 204 are fixedly mounted on the rear ends of the two rotary drive rollers 202, and the two connecting gears 204 are meshed and connected; Its specific function is as follows: since the four rotating drive rollers 202 are rotatably mounted on the two mounting plates 201, and the two servo motors 203 are mounted on the two mounting plates 201 on the front side by screws, and the output shafts of the two servo motors 203 are also fixedly connected to the two rotating drive rollers 202 below, when the output shafts of the two servo motors 203 rotate forward, the two rotating drive rollers 202 below rotate clockwise; when the output shafts of the two servo motors 203 rotate reversely, the two rotating drive rollers 202 below rotate counterclockwise; and since the outer walls of the four rotating drive rollers 202 are in contact with the carpet 500, and the four connecting gears 204 are fixedly mounted on the rear ends of the four rotating drive rollers 202, and the two connecting gears 204 on the left and right sides are respectively meshed and connected, the two rotating drive rollers 202 above can rotate in the opposite direction following the two rotating drive rollers 202 below, so that the carpet 500 automatically moves under the action of the four rotating drive rollers 202, thereby realizing automatic detection of the carpet 500.

[0025] In the present disclosure, Figure 3 , Figure 5and Figure 7 As shown, the defect detection unit 300 includes: a U-shaped frame 301; the U-shaped frame 301 is installed on the top of the installation base plate 100 by screws, and a triangular observation mark 3011 is provided on the front side of the U-shaped frame 301, and a circle of arc-shaped groove 3012 is also provided on the front side of the U-shaped frame 301; the defect detection unit 300 also includes: a supporting plate 302, an image acquisition camera 303 and a limit knob 304; the supporting plate 302 is fixedly installed on the U-shaped frame 301; the image acquisition cameras 303 are arranged in two rows, and the two rows of image acquisition cameras 303 are slidably installed on the U-shaped frame 301, and the two rows of image acquisition cameras 303 are also electrically connected to the control panel 400; the limit knobs 304 are arranged in two rows, and the two rows of limit knobs 304 are threadedly connected to the U-shaped frame 301, and the inner ends of the two rows of limit knobs 304 are in contact with the two rows of image acquisition cameras 303; The re-inspection judgment part 600 includes: an H-shaped movable frame 601, a cleaning brush 602 and a coil spring 603; the H-shaped movable frame 601 is slidably mounted on the U-shaped frame 301; the cleaning brush 602 is fixedly mounted at the bottom of the H-shaped movable frame 601; there are two coil springs 603, and the two coil springs 603 are sleeved on the outside of the H-shaped movable frame 601, and the two coil springs 603 are located above the U-shaped frame 301; the re-inspection judgment part 600 also includes: a mounting bar 604, a linear electric cylinder A605 and an inclined seal The mounting bar 604 is mounted on the U-shaped frame 301 by screws; there are two linear electric cylinders A605, and the two linear electric cylinders A605 are fixedly mounted on the mounting bar 604, and the two linear electric cylinders A605 are also electrically connected to the control panel 400; the inclined sealing frame 606 is fixedly mounted on the output shafts of the two linear electric cylinders A605, and the top of the inclined sealing frame 606 is in contact with a row of image acquisition cameras 303 on the left, and the bottom of the inclined sealing frame 606 is in contact with the H-shaped movable frame 601; The specific functions are as follows: since the two rows of image acquisition cameras 303 are slidably installed on the U-shaped frame 301, and the two rows of limit knobs 304 are threadedly connected to the U-shaped frame 301, and the inner ends of the two rows of limit knobs 304 are in contact with the two rows of image acquisition cameras 303, it is convenient for the staff to install or disassemble the image acquisition cameras 303, and it is conducive to timely replacement of damaged image acquisition cameras 303; the two rows of image acquisition cameras 303 are set, the right row of image acquisition cameras 303 is used to detect the surface of the carpet 500, and the left row of image acquisition cameras 303 is used to re-inspect the defects detected by the right row of image acquisition cameras 303; In addition, because the two linear electric cylinders A605 are fixedly mounted on the mounting bar 604, and the inclined sealing frame 606 is fixedly mounted on the output shafts of the two linear electric cylinders A605, and the top of the inclined sealing frame 606 is in contact with the row of image acquisition cameras 303 on the left, when the row of image acquisition cameras 303 on the right detects that there are defects on the carpet 500, the control panel 400 controls the output shafts of the two linear electric cylinders A605 to extend, so that the inclined sealing frame 606 is separated from the row of image acquisition cameras 303 on the left, and then the control panel 400 controls the output shafts of the two servo motors 203 to rotate in the opposite direction, so that the carpet 500 with defects moves in the opposite direction to the bottom of the row of image acquisition cameras 303 on the left; when the row of image acquisition cameras 303 on the left detects that there are defects at the corresponding positions, it indicates that there are indeed defects at this location on the carpet 500. When the left row of image acquisition cameras 303 do not detect the existence of defects at the corresponding positions, it indicates that there are debris on the lenses of the right row of image acquisition cameras 303 or there are debris at the defective parts of the carpet 500; and because the two coil springs 603 are sleeved on the outside of the H-shaped movable frame 601, and the two coil springs 603 are located above the U-shaped frame 301, and the bottom of the inclined sealing frame 606 is in contact with the H-shaped movable frame 601, when the control panel 400 controls the output shafts of the two linear electric cylinders A605 to extend, the H-shaped movable frame 601 automatically moves downward under the action of the inclined sealing frame 606, so that the cleaning brush 602 first contacts the carpet 500, ensuring that when the carpet 500 moves in the opposite direction to the bottom of the left row of image acquisition cameras 303, the cleaning brush 602 can automatically clean the defective parts, which is conducive to the accurate detection of the left row of image acquisition cameras 303; Among them, when the carpet 500 has passed the inspection of the left row of image acquisition cameras 303, the control panel 400 controls the output shafts of the two linear electric cylinders A605 to retract, so that the inclined sealing frame 606 contacts the left row of image acquisition cameras 303, and the lenses of the left row of image acquisition cameras 303 are shielded and protected. The H-shaped movable frame 601 automatically resets upward under the action of the two coil springs 603; then the control panel 400 controls the output shafts of the two servo motors 203 to rotate forward, so that the carpet 500 with defects before is moved to the bottom of the right row of image acquisition cameras 303 again. When the right row of image acquisition cameras 303 detects defects at the corresponding positions, it means that there are debris on the lenses of the right row of image acquisition cameras 303; when the right row of image acquisition cameras 303 does not detect defects at the corresponding positions, it means that there are debris at the defects of the carpet 500 before.

[0026] In the present disclosure, Figures 8 to 10As shown, the level confirmation part 700 includes: an active recording seat 701, a ratchet mechanism 702 and an active positioning head 703; the active recording seat 701 is rotatably mounted on the U-shaped frame 301; the ratchet mechanism 702 is fixedly mounted on the rear end of the active recording seat 701; the active positioning head 703 is slidably mounted on the active recording seat 701, and the rear end of the active positioning head 703 is provided with a rounded corner, and the rear end of the active positioning head 703 is inserted into the corresponding arc groove 3012; the level confirmation part 700 also includes: a reset spring 704, a linear electric cylinder B705 and a rectangular shell 706; the reset spring 704 is sleeved on the outside of the active positioning head 703, and the front end of the reset spring 704 is in contact with the active recording seat 701. The dynamic positioning head 703 is fixedly connected, and the rear end of the reset tension spring 704 is fixedly connected to the active recording seat 701; there are two linear electric cylinders B705, and the two linear electric cylinders B705 are fixedly installed on the top of the installation base plate 100, and the two linear electric cylinders B705 are also electrically connected to the control panel 400; the rectangular shell 706 is fixedly installed on the output shafts of the two linear electric cylinders B705; the level confirmation part 700 also includes: a linear rack 707 and a dye absorbing cotton 708; the linear rack 707 is fixedly installed at the bottom of the rectangular shell 706, and the linear rack 707 is also meshed and connected with the ratchet mechanism 702; the dye absorbing cotton 708 is installed inside the rectangular shell 706; Its specific function is as follows: since the rectangular housing 706 is fixedly mounted on the output shafts of the two linear electric cylinders B705, and the dye absorbing cotton 708 is mounted inside the rectangular housing 706, when the carpet 500 has defects after re-inspection, the control panel 400 controls the output shafts of the two linear electric cylinders B705 to extend, so that the dye absorbing cotton 708 automatically contacts the bottom of the carpet 500, and the defects of the carpet 500 are recorded, which is convenient for the staff to find the defects on the carpet 500 later, and is conducive to improving the repair efficiency of the defects; In addition, since the movable recording seat 701 is rotatably mounted on the U-shaped frame 301, and the movable recording seat 701 is provided with grade marks from Class A to Class D, and the front side of the U-shaped frame 301 is provided with a triangular observation mark 3011, it is convenient for the staff to judge the grade of the carpet 500. When the carpet 500 after the inspection has no defects, the carpet 500 after production is a qualified product; when the carpet 500 after the inspection has defects, the grade of the carpet 500 is judged according to the triangular observation mark 3011. When the movable recording seat 701 rotates more than one circle, it is treated as Class D. When the movable recording seat 701 does not rotate more than one circle, the corresponding grade is judged according to the area pointed by the triangular observation mark 3011. Grade (A, B, C or D), which is conducive to subsequent discount sales according to the grade; because the ratchet mechanism 702 is fixedly installed at the rear end of the active recording seat 701, and the linear rack 707 is meshed and connected with the ratchet mechanism 702, and the rear end of the active positioning head 703 is inserted into the corresponding arc groove 3012, when the dye absorbing cotton 708 moves upward, the active recording seat 701 rotates a certain angle, and the rotation angle of the active recording seat 701 is the same as the angle between the two adjacent arc grooves 3012; when the dye absorbing cotton 708 moves downward, the active recording seat 701 does not rotate under the resistance of the active positioning head 703, thereby realizing the one-way automatic rotation of the active recording seat 701; Among them, the proportions of Class A, Class B, Class C and Class D on the activity recording seat 701 can be appropriately adjusted according to the production quality requirements of the carpet 500, so as to have higher versatility.

[0027] A method for detecting surface flaws in carpet production: 1) Pass the carpet 500 to be tested through the two rotating drive rollers 202 at the left and right ends, so that the bottom of the carpet 500 contacts the supporting plate 302; 2) Start the two servo motors 203 and the two rows of image acquisition cameras 303 through the control panel 400. When the right row of image acquisition cameras 303 detects that there are defects on the carpet 500, the control panel 400 controls the output shafts of the two linear electric cylinders A605 to extend. Then, the control panel 400 controls the output shafts of the two servo motors 203 to rotate in the opposite direction, so that the carpet 500 with the defects moves in the opposite direction to the bottom of the left row of image acquisition cameras 303. 3) When the carpet 500 has passed the inspection of the left row of image acquisition cameras 303, the control panel 400 controls the output shafts of the two linear electric cylinders A605 to retract, and then the control panel 400 controls the output shafts of the two servo motors 203 to rotate forward, so that the carpet 500 with defects previously moved again to the bottom of the right row of image acquisition cameras 303; 4) When the carpet 500 is found to have defects after re-inspection, the control panel 400 controls the output shafts of the two linear electric cylinders B705 to extend, so that the dye absorbing cotton 708 automatically contacts the bottom of the carpet 500; 5) When the carpet 500 has defects after inspection, the grade of the carpet 500 is determined according to the triangular observation mark 3011. When the movable recording seat 701 rotates more than one circle, it is treated as Class D. When the movable recording seat 701 rotates less than one circle, the corresponding grade is determined according to the area pointed by the triangular observation mark 3011.

[0028] The specific usage and function of this embodiment are as follows: When the present invention is used, firstly, the carpet 500 to be inspected is passed through the two rotating drive rollers 202 at the left and right ends, so that the bottom of the carpet 500 contacts the supporting plate 302; the two servo motors 203 and the two rows of image acquisition cameras 303 are started through the control panel 400, and when the output shafts of the two servo motors 203 rotate forward, the two rotating drive rollers 202 at the bottom rotate clockwise; when the output shafts of the two servo motors 203 rotate reversely, the two rotating drive rollers 202 at the bottom rotate counterclockwise; the two rotating drive rollers 202 at the top can follow the two rotating drive rollers 202 at the bottom to rotate in the opposite direction, so that the carpet 500 automatically moves under the action of the four rotating drive rollers 202, thereby realizing the automatic inspection of the carpet 500; when the right side When the row of image acquisition cameras 303 on the left detects that there are defects on the carpet 500, the control panel 400 controls the output shafts of the two linear electric cylinders A605 to extend, so that the inclined sealing frame 606 is separated from the row of image acquisition cameras 303 on the left, and then the control panel 400 controls the output shafts of the two servo motors 203 to rotate in the opposite direction, so that the carpet 500 with the defect moves in the opposite direction to the bottom of the row of image acquisition cameras 303 on the left; when the row of image acquisition cameras 303 on the left detects that there are defects at the corresponding positions, it means that the carpet 500 does have defects at this position; when the row of image acquisition cameras 303 on the left does not detect that there are defects at the corresponding positions, it means that the row of image acquisition cameras on the right 303 or there are debris on the lens of the carpet 500; when the control panel 400 controls the output shafts of the two linear electric cylinders A605 to extend, the H-shaped movable frame 601 automatically moves downward under the action of the inclined sealing frame 606, so that the cleaning brush 602 first contacts the carpet 500, ensuring that when the carpet 500 moves in the opposite direction to the bottom of the left row of image acquisition cameras 303, the cleaning brush 602 can automatically clean the defects, which is conducive to the accurate detection of the left row of image acquisition cameras 303; when the carpet 500 passes the left row of image acquisition cameras 303 and the detection is completed, the control panel 400 controls the output shafts of the two linear electric cylinders A605 to retract, so that the inclined sealing frame 606 and the left row of image acquisition cameras 303 are in contact with each other. The image acquisition cameras 303 are in contact, which shields and protects the lenses of the left row of image acquisition cameras 303. The H-shaped movable frame 601 automatically resets upward under the action of the two coil springs 603. Then the control panel 400 controls the output shafts of the two servo motors 203 to rotate forward, so that the carpet 500 with the defective part before moves again to the bottom of the right row of image acquisition cameras 303. When the right row of image acquisition cameras 303 detects the existence of defective parts at the corresponding positions, it indicates that there are foreign objects on the lenses of the right row of image acquisition cameras 303. When the right row of image acquisition cameras 303 does not detect the existence of defective parts at the corresponding positions, it indicates that there are foreign objects at the defective parts of the carpet 500 before.When the carpet 500 has defects after re-inspection, the control panel 400 controls the output shafts of the two linear electric cylinders B705 to extend, so that the dye absorbing cotton 708 automatically contacts the bottom of the carpet 500, which records the defects of the carpet 500, making it convenient for the staff to find the defects on the carpet 500 later, which is beneficial to improve the efficiency of repairing the defects; it is convenient for the staff to judge the grade of the carpet 500. When the carpet 500 does not have defects after inspection, the carpet 500 after production is qualified; when the carpet 500 has defects after inspection, according to the triangular observation The mark 3011 determines the grade of the carpet 500. When the movable recording seat 701 rotates more than one circle, it is treated as Class D. When the movable recording seat 701 rotates less than one circle, the corresponding grade (Class A, Class B, Class C or Class D) is determined according to the area pointed by the triangular observation mark 3011, which is conducive to subsequent discount sales according to the grade; when the dye absorbing cotton 708 moves upward, the movable recording seat 701 rotates a certain angle, and when the dye absorbing cotton 708 moves downward, the movable recording seat 701 does not rotate under the resistance of the movable positioning head 703, realizing the one-way automatic rotation of the movable recording seat 701. ;

[0029] In this article, there are a few points to note: 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0030] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0031] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A surface defect detection device for carpet production, used for detecting the surface of a carpet (500); comprising a mounting base (100); two sets of rotating drive units (200) are mounted on the top of the mounting base (100), and the two sets of rotating drive units (200) are used to move the carpet (500); characterized in that: A defect detection unit (300) is installed on the top of the installation base plate (100), and the defect detection unit (300) is located between the two groups of rotation drive units (200); a control panel (400) is installed on the front side of the defect detection unit (300); a re-inspection judgment unit (600) is installed on the defect detection unit (300), and the re-inspection judgment unit (600) is used to improve the detection accuracy of the defect detection unit (300); and a grade confirmation unit (700) is installed on the installation base plate (100) and the defect detection unit (300), and the grade confirmation unit (700) is used to confirm the grade of the carpet (500) after detection.

2. A surface defect detection device for carpet production according to claim 1, characterized in that: The rotary drive unit (200) comprises: a mounting plate (201), a rotary drive roller (202), a servo motor (203) and a connecting gear (204); two mounting plates (201) are provided, and the two mounting plates (201) are installed on the top of the mounting base plate (100) by means of screws; two rotary drive rollers (202) are provided, and the two rotary drive rollers (202) are rotatably installed on the mounting plate (201); the servo motor (203) is installed on the front mounting plate (201) by means of screws, and the output shaft of the servo motor (203) is also fixedly connected to the rotary drive roller (202) below, and the servo motor (203) is also electrically connected to the control panel (400); two connecting gears (204) are provided, and the two connecting gears (204) are fixedly installed at the rear ends of the two rotary drive rollers (202), and the two connecting gears (204) are meshedly connected.

3. The surface defect detection device for carpet production according to claim 2, characterized in that: The defect detection unit (300) comprises: a U-shaped frame (301); the U-shaped frame (301) is mounted on the top of the mounting base plate (100) by means of screws, a triangular observation mark (3011) is provided on the front side of the U-shaped frame (301), and a circle of arc-shaped grooves (3012) are also provided on the front side of the U-shaped frame (301).

4. The surface defect detection device for carpet production according to claim 3, characterized in that: The defect detection unit (300) further comprises: a support plate (302), an image acquisition camera (303) and a limit knob (304); the support plate (302) is fixedly mounted on the U-shaped frame (301); the image acquisition cameras (303) are arranged in two rows, and the two rows of image acquisition cameras (303) are slidably mounted on the U-shaped frame (301), and the two rows of image acquisition cameras (303) are also electrically connected to the control panel (400); the limit knobs (304) are arranged in two rows, and the two rows of limit knobs (304) are threadedly connected to the U-shaped frame (301), and the inner ends of the two rows of limit knobs (304) are in contact with the two rows of image acquisition cameras (303).

5. The surface defect detection device for carpet production according to claim 4, characterized in that: The re-inspection judgment unit (600) comprises: an H-shaped movable frame (601), a cleaning brush (602) and a coil spring (603); the H-shaped movable frame (601) is slidably mounted on the U-shaped frame (301); the cleaning brush (602) is fixedly mounted on the bottom of the H-shaped movable frame (601); and two coil springs (603) are provided, and the two coil springs (603) are sleeved on the outside of the H-shaped movable frame (601), and the two coil springs (603) are located above the U-shaped frame (301).

6. The surface defect detection device for carpet production according to claim 5, characterized in that: The re-inspection judgment unit (600) further comprises: a mounting bar (604), a linear electric cylinder A (605) and an inclined sealing frame (606); the mounting bar (604) is mounted on the U-shaped frame (301) by means of screws; a total of two linear electric cylinders A (605) are provided, and the two linear electric cylinders A (605) are fixedly mounted on the mounting bar (604), and the two linear electric cylinders A (605) are also electrically connected to the control panel (400); the inclined sealing frame (606) is fixedly mounted on the output shafts of the two linear electric cylinders A (605), and the top of the inclined sealing frame (606) contacts a row of image acquisition cameras (303) on the left, and the bottom of the inclined sealing frame (606) contacts the H-shaped movable frame (601).

7. The surface defect detection device for carpet production according to claim 6, characterized in that: The level confirmation unit (700) comprises: a movable recording seat (701), a ratchet mechanism (702) and a movable positioning head (703); the movable recording seat (701) is rotatably mounted on the U-shaped frame (301); the ratchet mechanism (702) is fixedly mounted on the rear end of the movable recording seat (701); the movable positioning head (703) is slidably mounted on the movable recording seat (701), and the rear end of the movable positioning head (703) is provided with a rounded corner, and the rear end of the movable positioning head (703) is inserted into the corresponding arc-shaped groove (3012).

8. The surface defect detection device for carpet production according to claim 7, characterized in that: The level confirmation part (700) further comprises: a reset spring (704), a linear electric cylinder B (705) and a rectangular housing (706); the reset spring (704) is sleeved on the outside of the movable positioning head (703), and the front end of the reset spring (704) is fixedly connected to the movable positioning head (703), and the rear end of the reset spring (704) is fixedly connected to the movable recording seat (701); there are two linear electric cylinders B (705) in total, and the two linear electric cylinders B (705) are fixedly installed on the top of the installation base plate (100), and the two linear electric cylinders B (705) are also electrically connected to the control panel (400); the rectangular housing (706) is fixedly installed on the output shafts of the two linear electric cylinders B (705).

9. The surface defect detection device for carpet production according to claim 8, characterized in that: The grade confirmation part (700) further comprises: a linear rack (707) and dye absorbing cotton (708); the linear rack (707) is fixedly mounted on the bottom of the rectangular shell (706), and the linear rack (707) is also meshedly connected with the ratchet mechanism (702); the dye absorbing cotton (708) is mounted inside the rectangular shell (706).

10. A method for detecting surface defects in carpet production, characterized in that: Using the surface defect detection device for carpet production as claimed in claim 9, the steps are as follows: 1) Passing the carpet (500) to be tested through two rotating drive rollers (202) at the left and right ends, so that the bottom of the carpet (500) contacts the supporting plate (302); 2) starting two servo motors (203) and two rows of image acquisition cameras (303) through the control panel (400); when the right row of image acquisition cameras (303) detects that there are defects on the carpet (500), the control panel (400) controls the output shafts of the two linear electric cylinders A (605) to extend, and then the control panel (400) controls the output shafts of the two servo motors (203) to rotate in the opposite direction, so that the carpet (500) with the defect moves in the opposite direction to below the left row of image acquisition cameras (303); 3) When the carpet (500) has passed through the left row of image acquisition cameras (303) and has completed detection, the control panel (400) controls the output shafts of the two linear electric cylinders A (605) to retract, and then the control panel (400) controls the output shafts of the two servo motors (203) to rotate forward, so that the carpet (500) with the defect previously moved again to the bottom of the right row of image acquisition cameras (303); 4) When the carpet (500) is found to have defects after re-inspection, the control panel (400) controls the output shafts of the two linear electric cylinders B (705) to extend, so that the dye absorbing cotton (708) automatically contacts the bottom of the carpet (500); 5) When the carpet (500) has defects after inspection, the grade of the carpet (500) is determined according to the triangular observation mark (3011). When the movable recording base (701) rotates more than one circle, it is treated as Class D grade; when the movable recording base (701) rotates less than one circle, the corresponding grade is determined according to the area pointed by the triangular observation mark (3011).

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