Automatic defect detection device and method based on functional slub yarn production

Abstract

The invention belongs to the field of yarn detection, and particularly relates to an automatic defect detection device and method based on functional slub yarn product.The device comprises a rack, a barrel is fixedly connected to the top of the rack, end covers are installed at the two ends of the barrel, a through hole is formed in the middle of each end cover, and a plurality of light supplementing lamps are installed in the barrel; a visual sensor is mounted at the top of the barrel; the visual sensor can shoot surface visual images of the slub yarn, and by arranging the barrel, the light supplementing lamp and the visual sensor, all visual images of the standard slub yarn penetrating through the barrel are shot in advance in the using process and prepared into a comparison image set, and the comparison image set is compared with the standard slub yarn. And then the computer compares the visual image shot in the production process with the comparison image set so as to judge whether the slub spacing on the slub yarn is qualified or not, so that the consistency and the stability of the slub spacing on the slub yarn are ensured, and the product quality of the slub yarn is improved.

Description

Technical Field

[0001] The invention relates to the field of yarn detection, and in particular to an automated defect detection device and method based on the production of functional slub yarn. Background Art

[0002] Slub yarn is a fancy yarn with uneven thickness distribution. Its characteristic is that there are bamboo-like parts in the yarn that are sometimes thin and sometimes thick.

[0003] In the current existing technology, the production of slub yarn is mainly achieved through a specific spinning process, including an electromagnetic clutch controlling the front roller to stop, a stepper motor driving the front roller to change speed, and a servo motor driving the middle and rear rollers to overfeed, which deposits fibers by changing the speed or stopping the rollers to form slub yarns.

[0004] The existing Chinese invention patent with publication number CN112748154B discloses a specification parameter detection device and specification parameter detection method of elastic slub yarn, the specification parameter detection device of elastic slub yarn includes a mounting bracket and a yarn rack, an information receiving processor, a mounting plate and a detection plate, the number of mounting plates is two, both mounting plates are arranged on the mounting bracket, a detection slot is formed between the two mounting plates, photosensitive thin film resistors are arranged on the wall surfaces of the two mounting plates facing each other, a plurality of light sources are arranged on the side wall of the detection plate facing the mounting plate, the light source and the photosensitive thin film resistor are both connected to the information receiving processor signal or electrically connected, the thread end of the slub yarn to be tested passes through the detection slot, so that the light source forms a shadow on the photosensitive thin film resistor when irradiating the slub yarn to be tested, and the information receiving processor is used to obtain the parameters of the slub yarn to be tested according to the resistance signal formed by the shadow. The specification parameter detection device of elastic slub yarn provided by the present invention effectively improves the parameter detection efficiency and detection accuracy of the slub yarn.

[0005] However, the above-mentioned detection device can only detect the thickness specifications of the slub yarn, but cannot detect the distance between the slub yarns. During the production process, the distance between the slub yarns may be larger or smaller, and it is difficult for the staff to discover and adjust the production equipment in time, which affects the quality of the slub yarn. Therefore, in order to solve the above-mentioned problem, an automated defect detection device and method based on the production of functional slub yarns are proposed. Summary of the invention

[0006] In order to solve the problem that the distance between bamboo nodes on bamboo yarn may be larger or smaller, and it is difficult for staff to detect and adjust production equipment in time, which in turn affects the quality of bamboo yarn, the present invention proposes an automated defect detection device and method based on the production of functional bamboo yarn.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the automated defect detection device based on the production of functional slub yarn described in the present invention comprises a frame, a cylinder is fixedly connected to the top of the frame, end covers are installed at both ends of the cylinder, a through hole is opened in the middle of the end cover, a plurality of fill lights are installed inside the cylinder, a visual sensor is installed on the top of the cylinder, a computer is installed on the frame, and the visual sensor and the computer are connected through a signal line; the visual sensor can capture the surface visual image of the slub yarn.

[0008] Preferably, a plurality of tubes are fixedly connected to the bottom of the cylinder, an air filter is installed at the end of the tube, an end of the through hole away from the cylinder is fixedly connected to an air pipe, and the air pipe is connected to the cylinder.

[0009] Preferably, the inner walls at both ends of the cylinder are fixedly connected with a fixing seat, a plurality of supports are installed in the middle of the fixing seat, and the plurality of supports are staggeredly distributed inside the fixing seat, a wheel seat is fixedly connected to the side of the support, and a guide wheel is rotatably connected to the wheel seat.

[0010] Preferably, a cavity is provided inside the adjusting seat, an adjusting ring is rotatably connected in the cavity, a worm wheel is fixedly connected to the surface of the adjusting ring, a worm is rotatably connected to the fixed seat, the worm and the worm wheel are meshed with each other, the worm passes through the side wall of the cylinder and extends to the outside, a connecting rod is hinged on the side of the support away from the telescopic seat, and the end of the connecting rod is hinged to the inner wall of the adjusting ring.

[0011] Preferably, a seat body is fixedly connected to the wheel seat, the side of the seat body is inserted into the guide wheel, and the side of the seat body and the guide wheel are slidably matched, a water storage cavity is opened inside the seat body, a micro groove is opened on the side of the water storage cavity close to the guide wheel, and a hose is fixedly connected to the side of the water storage cavity.

[0012] Preferably, a rubber pad is fixedly connected to one side of the seat body close to the guide wheel, and a through groove is formed on the rubber pad at a position corresponding to the micro groove.

[0013] Preferably, a flow guide cover is fixedly connected to one side of the two fixing seats close to each other, and a spiral flow guide groove is opened inside the air pipe.

[0014] Preferably, a guide rod is fixedly connected to the inner side wall of the fixing seat, a sliding sleeve is fixedly connected to the position of the support corresponding to the guide rod, and the guide rod passes through the sliding sleeve and is slidably connected to the sliding sleeve.

[0015] An automated defect detection method based on the production of functional slubby yarns is applicable to the automated defect detection device based on the production of functional slubby yarns. The inspection method comprises the following steps:

[0016] S1: Pre-shoot all visual images of the standard slub yarn passing through the inside of the tube, prepare them into a comparative visual image set, and upload them to the computer;

[0017] S2: passing the produced slub yarn through the cylinder of the detection device, taking a visual image of the slub yarn through a visual sensor, and uploading it to a computer;

[0018] S3: The computer compares the visual image in S2 with the comparison image set;

[0019] S4: The computer counts the number of failures. When the number of failures exceeds a preset upper limit, the computer sends a command to remind the staff.

[0020] Preferably, the cylinder of the detection device in S2 is connected to an external air pump so that the air pressure inside the cylinder is greater than that outside, and the airflow ejected from the cylinder sweeps the surface of the slub yarn to reduce the protruding fibers on the surface of the slub yarn.

[0021] The present invention is beneficial in that:

[0022] 1. The present invention is provided with a cylinder, a fill light, and a visual sensor. When in use, all visual images of the standard slub yarn passing through the cylinder are pre-photographed and prepared into a comparison image set. Then, a computer compares the visual images photographed during the production process with the comparison image set to judge whether the slub spacing on the slub yarn is qualified, thereby ensuring the consistency and stability of the slub spacing on the slub yarn and improving the product quality of the slub yarn.

[0023] 2. The present invention is provided with a tube body, an air filter and an air pipe. When in use, the air filter is connected to an external air pump to inject filtered air into the interior of the cylinder, and then the air is ejected from the through holes at both ends of the cylinder, and the yarn enters from the through holes at both ends, and the fibers protruding from the surface of the yarn are blown away by the airflow, so as to facilitate subsequent shooting and comparison, and make the air pressure inside the cylinder greater than that outside, so as to reduce the situation of dust and yarn flocs entering the interior;

[0024] 3. The present invention sets a seat body and a hose. When in use, the clean water in the water storage chamber will be coated on the surface of the guide wheel through the micropores. There is a fine gap between the guide wheel and the seat body, which can ensure that the liquid cannot flow out. However, as the guide wheel rotates, the clean water will be coated on the surface of the guide wheel. The clean water on the surface of the guide wheel is used to soak the bamboo yarn and smooth the hairiness at the same time. In addition, this setting uses less clean water, which is not easy to soak the entire bamboo yarn. When it goes out from the other end of the cylinder later, it can be dried by airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 is a flow chart of the method of the present invention;

[0027] Figure 2 It is a schematic diagram of the cylinder structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the cylinder of the present invention;

[0029] Figure 4 It is a schematic diagram of the side cross-sectional structure of the fixing seat of the present invention;

[0030] Figure 5 It is a schematic diagram of the side view structure of the fixing seat of the present invention;

[0031] Figure 6 It is a schematic diagram of the cross-sectional structure of the fixing seat of the present invention;

[0032] Figure 7 It is a schematic diagram of the cross-sectional structure of the adjustment ring of the present invention;

[0033] Figure 8 It is a schematic diagram of the cross-sectional structure of the support of the present invention;

[0034] Fig. 9 It is a schematic diagram of the seat structure of the present invention;

[0035] Fig.10 It is a schematic diagram of the trachea cross-sectional structure of the present invention.

[0036] In the figure: 11, cylinder; 12, visual sensor; 13, fill light; 14, through hole; 21, air pipe; 22, tube body; 23, air filter; 31, fixing seat; 32, cavity; 33, support; 34, wheel seat; 35, guide wheel; 41, worm; 42, worm wheel; 43, adjusting ring; 44, connecting rod; 45, guide rod; 61, seat body; 62, micro groove; 63, hose; 64, water storage cavity; 71, rubber pad; 72, through groove; 81, deflector cover; 82, deflector groove. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1

[0039] See also Figure 2-9 As shown, an automated defect detection device based on the production of functional slub yarn comprises a frame; a cylinder 11 is fixedly connected to the top of the frame, end caps are installed at both ends of the cylinder 11, a through hole 14 is opened in the middle of the end cap, a plurality of fill lights 13 are installed inside the cylinder 11, a visual sensor 12 is installed on the top of the cylinder 11, a computer 15 is installed on the frame, and the visual sensor 12 and the computer 15 are connected through a signal line; the visual sensor 12 can capture the surface visual image of the slub yarn;

[0040] When in use, the slub yarn enters the cylinder 11 from the through hole 14 at one end and passes through the through hole 14 at the other end, and then the visual image of the surface of the yarn is captured by the visual sensor 12 above the cylinder 11, and then the interval visual image is sent to the computer 15. Prior to this, all visual images of the standard slub yarn when passing through the cylinder 11 are pre-captured and prepared into comparison images. The slub yarn has slub yarns one by one. In the captured image, there are multiple points on a yarn. All visual images of the yarn when passing through are pre-captured and prepared into a comparison image set in which multiple points move to different positions. Then the computer 15 compares the visual image captured during the production process with the comparison image set. When the visual image captured during production is consistent with one of the images in the comparison image set, it is judged to be qualified. If there is no similarity, it is judged to be unqualified. In this way, the consistency and stability of the slub spacing on the slub yarn are ensured, and the product quality of the slub yarn is improved. The frame is used to fix the cylinder 11.

[0041] Furthermore, a plurality of tubes 22 are fixedly connected to the bottom of the cylinder 11, and an air filter 23 is installed at the end of the tube 22. An air pipe 21 is fixedly connected to one end of the through hole 14 away from the cylinder 11, and the air pipe 21 is connected to the cylinder 11.

[0042] When in use, since the bamboo yarn forms bamboo nodes by changing the speed of the roller or stopping it, it will cause protruding fibers to form on the surface of the yarn. These protruding fibers will affect the clarity and shape integrity of the yarn bamboo nodes in the captured image, and thus affect the subsequent image contrast. Therefore, in this embodiment, an air filter 23 is provided, and the air filter 23 is connected to an external air pump to inject filtered air into the interior of the cylinder 11, and then the air is ejected from the through holes 14 at both ends of the cylinder 11, and the yarn enters from the through holes 14 at both ends, and the protruding fibers on the yarn surface are blown away by the airflow, thereby facilitating subsequent shooting comparison, and making the air pressure inside the cylinder 11 greater than that of the outside, thereby reducing the entry of dust and yarn flocs into the interior.

[0043] Furthermore, the inner walls at both ends of the cylinder 11 are fixedly connected with a fixing seat 31, and a plurality of supports 33 are installed in the middle of the fixing seat 31. The plurality of supports 33 are staggeredly distributed inside the fixing seat 31, and the side of the support 33 is fixedly connected with a wheel seat 34, and the wheel seat 34 is rotatably connected with a guide wheel 35;

[0044] During use, the air jets at both ends will aggravate the shaking of the slub yarn, and excessive shaking will cause the slub yarn to be not located in the center of the image, affecting the difficulty of subsequent comparison. Therefore, a fixed seat 31 is provided, and a support 33 is installed inside the fixed seat 31, and a guide wheel 35 is fixed to the support 33 through a telescopic seat and a wheel seat 34. The yarn passes through multiple guide wheels 35, and the guide wheels 35 can provide a fixing effect on the yarn and improve stability.

[0045] Further, a cavity 32 is provided inside the adjusting seat, an adjusting ring 43 is rotatably connected in the cavity 32, a worm wheel 42 is fixedly connected to the surface of the adjusting ring 43, a worm 41 is rotatably connected to the fixing seat 31, the worm 41 and the worm wheel 42 are meshed with each other, the worm 41 passes through the side wall of the cylinder 11 and extends to the outside, a connecting rod 44 is hingedly connected to the side of the support 33 away from the telescopic seat, the end of the connecting rod 44 is hingedly connected to the inner side wall of the adjusting ring 43, a guide rod 45 is fixedly connected to the inner side wall of the fixing seat 31, a sliding sleeve is fixedly connected to the support 33 at a position corresponding to the guide rod 45, and the guide rod 45 passes through the sliding sleeve and is slidably connected thereto;

[0046] When in use, the worm gear 42 can be driven to rotate by rotating the worm screw 41, thereby driving the internal adjustment ring 43 to rotate, and the multiple connecting rods 44 hinged in the adjustment ring 43 drive the support 33 to move, so as to adjust the positions of the multiple guide wheels 35, so as to facilitate the adaptation of bamboo yarns of different thicknesses and improve the scope of application. At the same time, the tension of the bamboo yarn can be easily adjusted to keep the bamboo yarn in a straight state, which is convenient for subsequent image information acquisition. The support 33 slides on the guide rod 45 through a sliding sleeve, so as to guide the support 33 and improve stability.

[0047] Furthermore, a flow guide cover 81 is fixedly connected to one side of the two fixing seats 31 that are close to each other, and a spiral flow guide groove 82 is opened inside the air pipe 21 .

[0048] When in use, the guide cover 81 is set to conveniently guide the airflow into the fixed seat 31, thereby reducing the turbulence formed inside the airflow cover cylinder 11. The entire outer shell is provided with the cylinder 11, which can also reduce the turbulence and thus reduce the disturbance to the yarn. The guide groove 82 is set to guide the airflow to spray out in a spiral shape. The spiral airflow can guide the protruding fibers on the bamboo yarn that cannot be blown away to wrap around the surface of the yarn, making it convenient to obtain clear and stable images later.

[0049] Embodiment 2

[0050] See also Figure 9-10 As shown, comparative example 1 is another embodiment of the present invention, a seat body 61 is fixedly connected to the wheel seat 34, the side of the seat body 61 is inserted into the guide wheel 35, and the side of the seat body 61 and the guide wheel 35 are slidably matched, a water storage chamber 64 is provided inside the seat body 61, a micro groove 62 is provided on the side of the water storage chamber 64 close to the guide wheel 35, and a hose 63 is fixedly connected to the side of the water storage chamber 64;

[0051] During use, depending on the material of the yarn, part of the yarn surface will form hairiness under the action of static electricity. When shooting, the surface of the slub yarn in the image will be blurred. Therefore, in this embodiment, for yarns with serious surface hairiness, a seat 61 is provided, and the seat 61 is connected to an external micro pump through a hose 63. The micro pump supplies clean water to the water storage chamber 64, and the clean water will be coated on the surface of the guide wheel 35 through the micropores. There is a fine gap between the guide wheel 35 and the seat 61, which can ensure that the liquid cannot flow out. However, as the guide wheel 35 rotates, the clean water will be coated on the surface of the guide wheel 35, and the clean water on the surface of the guide wheel 35 is used to soak the slub yarn and smooth the hairiness at the same time. In addition, the clean water used in this setting is less, and it is not easy to soak the entire slub yarn. When it goes out from the other end of the cylinder 11 later, it can be dried by airflow. A water pressure sensor is also installed on the hose 63 to avoid the situation where the water pressure in the water storage chamber 64 is too high and sprayed out from the through groove 72.

[0052] Furthermore, a rubber pad 71 is fixedly connected to one side of the seat body 61 close to the guide wheel 35, and a through groove 72 is formed on the rubber pad 71 at a position corresponding to the micro groove 62;

[0053] When in use, by setting up the rubber pad 71, it can improve the fit between the seat body 61 and the guide wheel 35, thereby reducing the water leakage caused by the shaking of the guide wheel 35, and the rubber pad 71 can increase the friction between the guide wheel 35, so that the rotation speed of the guide wheel 35 will be reduced, making it lower than the movement of the bamboo yarn, and then a certain amount of sliding will occur between the surface of the guide wheel 35 and the bamboo yarn, so as to smooth the hairiness on the surface of the bamboo yarn, making it convenient to obtain clear and stable images later.

[0054] See also Figure 1 As shown, an automated defect detection method based on the production of functional slubby yarn is applicable to the automated defect detection device based on the production of functional slubby yarn described above. The inspection method comprises the following steps:

[0055] S1: pre-shooting all visual images of the standard slub yarn passing through the cylinder 11, preparing them into a comparative visual image set, and uploading them to the computer 15;

[0056] S2: The produced slub yarn passes through the cylinder 11 of the detection device, and the visual image of the slub yarn is captured by the visual sensor 12 and uploaded to the computer 15;

[0057] S3: the computer 15 compares the visual image in S2 with the comparison image set;

[0058] S4: The computer 15 counts the number of failures. When the number of failures exceeds a preset upper limit of failure, the computer 15 issues a command to remind the staff.

[0059] Furthermore, the cylinder 11 of the detection device in S2 is connected to an external air pump so that the air pressure inside the cylinder 11 is greater than that outside, and the airflow ejected from the cylinder 11 sweeps the surface of the slub yarn to reduce the protruding fibers on the surface of the slub yarn.

[0060] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An automated defect detection device based on functional slub yarn production, comprising a frame; characterized in that: A cylinder (11) is fixedly connected to the top of the frame, end covers are installed at both ends of the cylinder (11), a through hole (14) is opened in the middle of the end cover, a plurality of fill lights (13) are installed inside the cylinder (11), a visual sensor (12) is installed on the top of the cylinder (11), a computer (15) is installed on the frame, and the visual sensor (12) and the computer (15) are connected via a signal line; the visual sensor (12) can capture a surface visual image of the slub yarn.

2. The automatic defect detection device based on functional slub yarn production according to claim 1 is characterized in that: A plurality of tubes (22) are fixedly connected to the bottom of the cylinder (11), an air filter (23) is installed at the end of the tube (22), an air pipe (21) is fixedly connected to the end of the through hole (14) away from the cylinder (11), and the air pipe (21) is connected to the cylinder (11).

3. The automatic defect detection device based on the production of functional slub yarn according to claim 2 is characterized in that: The inner walls at both ends of the cylinder (11) are fixedly connected with a fixed seat (31), a plurality of supports (33) are installed in the middle of the fixed seat (31), and the plurality of supports (33) are staggeredly distributed inside the fixed seat (31), a wheel seat (34) is fixedly connected to the side of the support (33), and a guide wheel (35) is rotatably connected to the wheel seat (34).

4. The automatic defect detection device based on functional slub yarn production according to claim 3 is characterized in that: A cavity (32) is provided inside the adjusting seat, an adjusting ring (43) is rotatably connected inside the cavity (32), a worm wheel (42) is fixedly connected to the surface of the adjusting ring (43), a worm (41) is rotatably connected to the fixing seat (31), the worm (41) and the worm wheel (42) are meshed with each other, the worm (41) penetrates the side wall of the cylinder (11) and extends to the outside, a connecting rod (44) is hingedly connected to the side of the support (33) away from the telescopic seat, and the end of the connecting rod (44) is hingedly connected to the inner wall of the adjusting ring (43).

5. The automatic defect detection device based on the production of functional slub yarn according to claim 3 is characterized in that: A seat body (61) is fixedly connected to the wheel seat (34), the side of the seat body (61) is inserted into the guide wheel (35), and the side of the seat body (61) and the guide wheel (35) are slidably matched, a water storage chamber (64) is provided inside the seat body (61), a micro groove (62) is provided on a side of the water storage chamber (64) close to the guide wheel (35), and a hose (63) is fixedly connected to the side of the water storage chamber (64).

6. The automatic defect detection device based on functional slub yarn production according to claim 5 is characterized in that: A rubber pad (71) is fixedly connected to one side of the seat body (61) close to the guide wheel (35), and a through groove (72) is provided on the rubber pad (71) at a position corresponding to the micro groove (62).

7. The automatic defect detection device based on functional slub yarn production according to claim 2 is characterized in that: A flow guide cover (81) is fixedly connected to one side of the two fixing seats (31) close to each other, and a spiral flow guide groove (82) is provided inside the air pipe (21).

8. The automatic defect detection device based on functional slub yarn production according to claim 4 is characterized in that: A guide rod (45) is fixedly connected to the inner side wall of the fixed seat (31), a sliding sleeve is fixedly connected to a position on the support (33) corresponding to the guide rod (45), and the guide rod (45) passes through the sliding sleeve and is slidably connected thereto.

9. An automated defect detection method based on the production of functional slub yarn, characterized in that: The detection method is applicable to any one of claims 1 to 8 of the automated defect detection device based on the production of functional slub yarn, and the inspection method comprises the following steps: S1: pre-photographing all visual images of the standard slub yarn passing through the inside of the cylinder (11), preparing them into a comparative visual image set, and uploading them to a computer (15); S2: passing the produced slub yarn through the inside of the cylinder (11) of the detection device, taking a visual image of the slub yarn through a visual sensor (12), and uploading the image to a computer (15); S3: The computer (15) compares the visual image in S2 with the comparison image set; S4: The computer (15) counts the number of failures. When the number of failures exceeds a preset upper limit of failure, the computer (15) issues a command to remind the staff.

10. The automated defect detection method based on functional slub yarn production according to claim 9, characterized in that: The cylinder (11) of the detection device in S2 is connected to an external air pump so that the air pressure inside the cylinder (11) is greater than that outside. The airflow ejected from the cylinder (11) sweeps the surface of the slub yarn to reduce the protruding fibers on the surface of the slub yarn.

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