Yarn defect detection device

Abstract

The present invention belongs to the technical field of defect detection, and specifically provides a yarn defect detection device, including a conveyor belt, which is divided into an inlet section, a detection section, and an outlet section. The inlet section is provided with a marking machine, and the inlet section is connected to one end of the detection section. The detection section is provided with a visual camera, a yarn strength machine, a yarn twist meter, a yarn regain and count detection device in sequence, and the visual camera, the yarn strength machine, the yarn twist meter, the yarn regain and count detection device are all electrically connected to an information processing system. The other end of the detection section is connected to the outlet section, and the outlet section and the inlet section are arranged in a colinear manner. The outlet section and the inlet section are provided with matching interval feeding devices. Through the above arrangement, a standardized yarn detection step is formed, and the detected yarn can be marked at the same time to prevent the defective yarn target from being lost, and the number of yarns entering the device for detection can be limited to prevent misdetection and missed detection.

Description

Technical Field

[0001] The present invention relates to the technical field of defect detection, and in particular to a yarn defect detection device. Background Art

[0002] During the yarn production process, yarn defects often occur due to irregular production operations or problems with production equipment. Common types of yarn defects include impurities, oil stains, rust stains, thick sections, different-colored fibers, and cotton neps. These defects will directly affect the appearance quality and physical properties of the yarn.

[0003] Therefore, yarn defect detection is an important part of ensuring yarn quality. Common yarn quality inspections mainly include appearance quality and physical properties inspections. During the inspection process, several inspection equipment are required, such as yarn strength testers, yarn twist testers, etc. These inspection devices are independent of each other, there is no overall inspection device, and the inspection process is not standardized. When inspecting large batches of yarn, it is inevitable that there will be missed inspections, or defective yarn targets will be lost after inspection. Summary of the invention

[0004] In view of the above-mentioned defects, the present invention provides a yarn defect detection device, through which a standardized yarn detection procedure can be formed, and the detected yarn can be marked to prevent the defective yarn target from being lost.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a yarn defect detection device, comprising a conveyor belt, the conveyor belt is divided into an inlet segment, a detection segment and an outlet segment, the inlet segment is provided with a marking machine, the inlet segment is connected to one end of the detection segment, the detection segment is sequentially provided with a visual camera, a yarn strength machine, a yarn twist meter and a yarn moisture regain and count detection device, the visual camera, the yarn strength machine, the yarn twist meter and the yarn moisture regain and count detection device are all electrically connected to an information processing system, the other end of the detection segment is connected to the outlet segment, the outlet segment and the inlet segment are arranged in a colinear manner, and the outlet segment and the inlet segment are provided with matching interval feeding devices;

[0006] The interval feeding device comprises a rotating wheel seat, the rotating wheel seat is fixed on a frame at one side of the inlet segment, the rotating wheel seat is rotatably connected to the rotating wheel, the rotating wheel comprises an upper turntable and a lower turntable fixedly connected by a rotating shaft, a plurality of limit rods are fixed on the circumferential array of the upper turntable, the limit rods extend to the top of the conveyor belt, and the lower turntable is evenly provided with grooves staggered with the limit rods in the circumference, the grooves cooperate with one end of a block hinged on the block seat, the block seat is fixed on the inlet segment frame, a second spring connecting block is arranged above the block, the second spring connecting block is fixedly connected to one end of a return spring, the other end of the return spring is fixedly connected to the first spring connecting block, and the first spring connecting block is arranged on the first base on a side away from the conveyor belt;

[0007] The other end of the block is hinged to one end of a long connecting rod, the other end of the long connecting rod is hinged to the bottom of the short connecting rod, the top of the short connecting rod is fixedly connected to a driving rod, the end of the driving rod away from the conveyor belt is hinged to a driving seat, the driving seat is fixedly connected to the frame of the outlet section, and the end of the driving rod close to the conveyor belt extends above the conveyor belt.

[0008] As a further improvement of the present invention, a contact sensor is arranged on the frame on the side of the driving rod away from the incoming line segment, the driving rod is functionally connected to the contact sensor, the contact sensor is electrically connected to the information processing system, a movable swing plate is arranged at the bottom of the end of the outgoing line segment, a plurality of swing grooves are opened on the swing plate, a long rack is fixed on one side of the swing plate, the long rack is meshed with a gear fixed at the output end of the stepper motor, and the stepper motor is electrically connected to the information processing system.

[0009] As a further improvement of the present invention, the number of the limit rods is 4, and the 4 limit rods are fixed along the circumference of the upper turntable. The number of the slots on the lower turntable is consistent with the number of the limit rods, and an angle of 45° is formed between adjacent slots and limit rods.

[0010] As a further improvement of the present invention, the shape of the card slot is semicircular, and the shape of the card block is T-shaped.

[0011] As a further improvement of the present invention, one side of the card block that cooperates with the card slot is semicircular.

[0012] As a further improvement of the present invention, the long connecting rod is parallel to the incoming line segment.

[0013] As a further improvement of the present invention, the detection section of the conveyor belt is arranged in an isosceles trapezoid as a whole.

[0014] As a further improvement of the present invention, the marking machine is a coding marking machine.

[0015] As a further improvement of the present invention, a mechanical arm is provided at the end of the incoming line segment.

[0016] As a further improvement of the present invention, the yarn moisture regain and count detection device includes a yarn length measuring instrument, a weighing machine and a drying machine.

[0017] Beneficial effects of the present invention:

[0018] 1. Since some steps in yarn detection cannot be avoided manually, in order to avoid inaccurate operation time, some yarn tubes will be piled up at a certain detection point, resulting in missed detection or wrong detection during the detection process. Therefore, an interval feeding device is set up. Whenever the yarn on a yarn tube is detected and output from the discharge end, the new undetected yarn tube can enter the detection area, otherwise it will be stuck in front of the detection area and wait for the detection to be completed.

[0019] 2. By setting up a marking machine, the yarn bobbins can be marked. Different marks can be used to easily distinguish the yarn bobbins, ensuring that the yarn bobbins with defective yarns can be found after the yarn inspection is completed. At the same time, a yarn bobbin swinging device that can cooperate with the interval feeding device is provided, and each yarn bobbin can be placed in its own swinging trough, which further facilitates the distinction of yarn bobbins with defective yarn problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of a yarn defect detection device of the present invention;

[0021] Figure 2 This is a schematic diagram of the installation of the interval feeding device;

[0022] Figure 3 is a first structural schematic diagram of the interval feeding device;

[0023] Figure 4 is a second structural schematic diagram of the interval feeding device;

[0024] Figure 5 yes Figure 4 A magnified schematic diagram of the middle part;

[0025] Figure 6 It is a schematic diagram of the structure of the yarn tube swing device.

[0026] In the figure: 1-conveyor belt, 100-inlet section, 101-detection section, 102-outlet section, 2-long connecting rod, 3-driving rod, 4-driving seat, 5-block seat, 6-rotating wheel seat, 600-first spring connecting block, 7-rotating wheel, 700-limiting rod, 701-upper turntable, 702-lower turntable, 703-slot, 8-reset spring, 9-block, 900-second spring connecting block, 901-hinge part, 902-clamping part; 10-swinging plate, 1000-swinging trough, 1001-long rack, 11-stepping motor, 1100-gear, 12-universal wheel, 13-short connecting rod. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific examples described herein are only used to explain the present invention and are not intended to limit the present invention. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referenced to the directions of the accompanying drawings. Therefore, the directional terms used are used to illustrate and are not used to limit the present invention. In addition, in all embodiments, the same figure numerals represent the same elements.

[0028] See also Figure 1 , Figure 2 The present invention provides a yarn defect detection device, including a conveyor belt 1 and a plurality of detection devices.

[0029] The conveyor belt 1 can be divided into three sections, including an inlet section 100, a detection section 101, and an outlet section 102. The inlet section 100 is a straight section without bends or corners. A mechanical arm is provided at the end of the inlet section 100, and a marking machine is provided in the middle of the inlet section 100, and the marking machine uses a code-spraying marking machine.

[0030] As a further explanation of this embodiment, the yarn bobbin wound with the yarn to be tested can be automatically placed on the incoming line section 100 by a robotic arm. When the yarn bobbin is delivered to the marking machine of the incoming line section 100, an erasable mark can be left on the yarn bobbin by the marking machine.

[0031] The side of the inlet section 100 away from the end is connected to the detection section 101, and the angle between the inlet section 100 and the detection section 101 is 120°. The detection section 101 of the conveyor belt 1 is arranged in an isosceles trapezoid as a whole. Several detection devices are arranged on and on both sides of the detection section 101, including a visual camera, a yarn strength machine, a yarn twist meter, and a yarn moisture regain and count detection device, and the above devices are all electrically connected to the information processing system (computer).

[0032] As a further explanation of this embodiment, the visual camera can be used to zoom in and take close-up photos of the yarn on the yarn bobbin, and the photos can be sent to the information processing system, which can then analyze the appearance quality of the yarn, such as hairiness, color, and pilling. The yarn strength can be tested by using a yarn strength tester, and the results can be sent to the information processing system for analysis. The yarn twist meter can be used to test the twist of the yarn, and the results can be sent back to the information processing system for analysis.

[0033] A visual camera, a yarn strength machine, a yarn twist meter, a yarn moisture regain and count detection device are sequentially arranged along the detection section 101, wherein the yarn moisture regain and count detection device includes a yarn length measuring instrument, a weighing machine, and a drying machine.

[0034] As a further explanation of this embodiment, a certain length of yarn is cut by a yarn length measuring instrument, the length is L, the cut yarn is weighed by a weighing machine, and the initial weight is M1. The yarn is put into a dryer to remove moisture. After drying, the yarn is taken out and weighed again, and the weight after drying is M2. The measured L, M1, and M2 are returned to the information processing system for calculation. The actual moisture regain W of the yarn is calculated as follows:

[0035] W = [(M1- M2) / M2] × 100%;

[0036] The actual yarn count N is calculated as follows:

[0037] N=L / M2.

[0038] The side of the detection section 101 away from the incoming line section 100 is connected to the outgoing line section 102, the angle between the detection section 101 and the outgoing line section 102 is 120°, and the outgoing line section 102 is collinear with the incoming line section 100. Matching interval feeding devices are provided at the connection between the detection section 101 and the incoming line section 100 and the connection between the detection section 101 and the outgoing line section 102.

[0039] See also Figures 2 to 5 The interval feeding device includes a rotating wheel seat 6, which is arranged on one side close to the connection between the detection section 101 and the incoming line section 100, and the bottom of the rotating wheel seat 6 is fixedly connected to the frame of the incoming line section 100.

[0040] The rotating wheel seat 6 is rotatably connected to a rotating wheel 7, which includes an upper rotating disk 701 and a lower rotating disk 702. The upper rotating disk 701 and the lower rotating disk 702 are fixed by a rotating shaft that passes through the middle of the rotating wheel seat 6, and the rotating shaft is arranged in the vertical direction.

[0041] The upper turntable 701 is provided with a plurality of limit rods 700, the number of limit rods 700 being 4, and the 4 limit rods 700 are fixed in a circumferential array at intervals of 90° along the circumference of the upper turntable 701. The ends of the limit rods 700 extend above the conveyor belt 1 and can contact objects on the inlet line segment 100.

[0042] A first spring connection block 600 is disposed on the first base between the upper turntable 701 and the lower turntable 702 . The first spring connection block 600 is located at a side away from the conveyor belt 1 . A first spring connection hole is formed on the first spring connection block 600 .

[0043] A plurality of slots 703 are provided around the lower turntable 702, and the shape of the slots 703 is semicircular. There are four slots 703, and the four slots 703 are arranged in a circumferential array at intervals of 90° along the circumference of the lower turntable 702. The slots 703 and the limiting rods 700 of the upper turntable 701 form an angle of 45°.

[0044] The frame of the conveyor belt 1 is also fixedly connected with a block seat 5, which is located on one side of the detection section 101 and is arranged on the side of the rotating wheel seat 6 close to the outlet section 102. A T-shaped block 9 is hinged on the block seat 5, and a second spring connection block 900 is arranged on the upper side of the block 9 close to the rotating wheel seat 6, and a second spring connection hole is opened on the second spring connection block 900. One end of the return spring 8 is connected to the second spring connection block 900, and the other end of the return spring 8 is connected to the first spring connection block 600.

[0045] One end of the T-shaped head of the clamping block 9 is a semicircular clamping portion 902, which matches the clamping slot 703 on the lower rotating disk 702. The other end of the T-shaped head of the clamping block 9 is a hinged portion 901, and the hinged portion 901 is hinged with one end of the long connecting rod 2. The long connecting rod 2 is arranged in parallel with the incoming line segment 100, and the long connecting rod 2 extends from one end of the incoming line segment 100 to one end of the outgoing line segment 102.

[0046] The other end of the long connecting rod 2 is hinged to the bottom of the short connecting rod 13. The top of the short connecting rod 13 is fixedly connected to the bottom of the driving rod 3, and the end of the driving rod 3 away from the conveyor belt 1 is hinged to the driving seat 4, and the driving seat 4 is fixedly connected to the frame of the conveyor belt 1. The end of the driving rod 3 close to the conveyor belt 1 extends to the conveyor belt 1 and can contact the object on the outlet section 102.

[0047] As a further explanation of this embodiment, the yarn bobbin enters the incoming line segment 100 through the robot arm. When the yarn bobbin is delivered to the rotating wheel 7, the engaging portion 902 of the block 9 fits in the slot 703 on the lower turntable 702, and the lower turntable 702 is fixedly connected to the upper turntable 701. Therefore, the upper turntable 701 cannot move because the lower turntable 702 cannot move, and the yarn bobbin is blocked by the limit rod 700. When the yarn bobbin that has been tested is delivered to the outgoing line segment 102, the yarn bobbin will push the driving rod 3 to deviate to the side away from the incoming line segment 100, and the driving rod 3 drives the long connecting rod 2 to move to the side away from the incoming line segment 100 through the short connecting rod 13, and the long connecting rod 2 drives the block 9 to disengage from the slot 703. At this time, the yarn bobbin can push the rotating wheel 7 to rotate. When the yarn bobbin at the driving rod 3 passes, the rotating wheel 7 just rotates 90 degrees, and the reset spring 8 pulls the block 9 to re-enter another slot 703, and the limit rod 700 again prevents the yarn bobbin from passing through the rotating wheel 7 and entering the detection section 101. The long connecting rod 2 and the limit rod 700 are restored to the initial position, waiting for the next yarn bobbin that has been detected to pass.

[0048] See also Figure 1 , Figure 6 The end of the driving rod 3 away from the incoming line segment 100 is provided with a contact sensor, which is fixedly connected to the frame and electrically connected to the information processing system. The end of the outgoing line segment 102 away from the incoming line segment 100 is the end of the conveyor belt 1, and the end of the conveyor belt 1 is provided with a yarn bobbin swinging device.

[0049] The bobbin swinging device includes a swinging plate 10, on which a plurality of swinging grooves 1000 are provided. The swinging plate 10 is located below the end of the conveyor belt 1. Universal wheels 12 are fixedly connected to the four corners of the bottom of the swinging plate 10. A long rack 1001 is fixed to one side of the swinging plate 10. The long rack 1001 is arranged parallel to the outlet section 102, and the teeth of the long rack 1001 are arranged in an upward arrangement. A gear 1100 is meshed at the top of the long rack 1001, and the gear 1100 is fixedly connected to the output end of the stepping motor 11.

[0050] As a further explanation of this embodiment, when the driving rod 3 is pushed by the yarn tube on the conveyor belt 1 and is offset, the side of the driving rod 3 hits the contact sensor, and the contact sensor can send an electrical signal to the information processing system, and the information processing system can send an electrical signal to the stepper motor 11, so that the stepper motor 11 moves forward one step, and the gear 1100 fixed at the output end of the stepper motor 11 drives the swing plate 10 to move forward a certain distance through the mutually meshing long racks 1001, so that the yarn tube just falls into the empty swing trough 1000.

[0051] The working principle and use process of this embodiment:

[0052] First, the yarn tube is placed on the inlet section 100 of the conveyor belt 1 by a robotic arm. The yarn tube is transported along the conveyor belt 1. When passing through the marking machine, the marking machine will leave an erasable mark on the body of the yarn tube. After marking, the yarn tube will continue to be transported along the conveyor belt 1 and will be blocked when it reaches the rotating wheel 7.

[0053] The yarn bobbin goes to the detection section 101, and is detected by the visual camera, yarn strength machine, yarn twist meter, yarn regain and count detection device, and the detection data is transmitted to the computer. After all the detections are completed, the yarn bobbin is put back on the conveyor belt 1, and the yarn bobbin enters the outlet section 102 from the detection section 101. When passing the drive rod 3 of the outlet section 102, the yarn bobbin will push the drive rod 3 to deviate to the side away from the inlet section 100. At the same time, the drive rod 3 drives the card block 9 to disengage from the card slot 703 through the action of the short connecting rod 13 and the long connecting rod 2. The previously blocked yarn bobbin will push the rotating wheel 7 to rotate, so as to enter the detection section 101 for detection.

[0054] After the yarn bobbin has passed through, the block 9 is again engaged in the slot 703 under the action of the reset spring 8, blocking the yarn bobbin behind and waiting for the yarn bobbin in front to be detected.

[0055] When the drive rod 3 is pushed and offset by the yarn tube, the drive rod 3 will touch the contact sensor located on one side of it, and the contact sensor will send a signal to the information processing system. After receiving the signal, the information processing system will send a signal to the robotic arm to carry out a new round of loading; at the same time, the information processing system will also send a signal to the stepper motor 11, and the stepper motor 11 will drive the swing plate 10 to move forward, so that after the yarn tube falls from the conveyor belt 1, it will fall into the empty swing groove 1000 on the swing plate 10.

[0056] After the yarn inspection on the yarn bobbins of this batch is completed, the yarn bobbins with defective yarns are confirmed through the information processing system, and then the yarn bobbins with defective yarns are directly determined through the marks on the yarn bobbins, or they can be directly confirmed and sorted out according to their positions in the swing trough 1000 for subsequent processing.

[0057] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above implementation measures. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A yarn defect detection device, characterized in that: The conveyor belt (1) comprises a conveyor belt (1), the conveyor belt (1) being divided into an inlet section (100), a detection section (101) and an outlet section (102), the inlet section (100) being provided with a marking machine, the inlet section (100) being connected to one end of the detection section (101), the detection section (101) being provided with a visual camera, a yarn strength machine, a yarn twist meter and a yarn moisture regain and count detection device in sequence, the visual camera, the yarn strength machine, the yarn twist meter and the yarn moisture regain and count detection device being all electrically connected to an information processing system, the other end of the detection section (101) being connected to the outlet section (102), the outlet section (102) and the inlet section (100) being arranged in a colinear manner, and the outlet section (102) and the inlet section (100) being provided with matching interval feeding devices; The interval feeding device comprises a rotating wheel seat (6), the rotating wheel seat (6) being fixed on a frame on one side of the inlet section (100), the rotating wheel seat (6) being rotatably connected to a rotating wheel (7), the rotating wheel (7) comprising an upper rotating disk (701) and a lower rotating disk (702) being fixedly connected via a rotating shaft, a plurality of limiting rods (700) being fixed in a circular array around the periphery of the upper rotating disk (701), the limiting rods (700) extending to the top of the conveyor belt (1), and the lower rotating disk (702) being evenly arranged in the circumferential direction with the limiting rods (700) interlaced with each other. A card slot (703) is provided, the card slot (703) cooperates with one end of a card block (9) hinged on a card block seat (5), the card block seat (5) is fixed on a frame of an inlet line segment (100), a second spring connecting block (900) is provided above the card block (9), the second spring connecting block (900) is fixedly connected to one end of a return spring (8), the other end of the return spring (8) is fixedly connected to a first spring connecting block (600), and the first spring connecting block (600) is provided on a side of the first base away from the conveyor belt (1); The other end of the clamping block (9) is hinged to one end of a long connecting rod (2), the other end of the long connecting rod (2) is hinged to the bottom of a short connecting rod (13), the top of the short connecting rod (13) is fixedly connected to a driving rod (3), the end of the driving rod (3) away from the conveyor belt (1) is hinged to a driving seat (4), the driving seat (4) is fixedly connected to the frame of the outlet section (102), and the end of the driving rod (3) close to the conveyor belt (1) extends above the conveyor belt (1).

2. The yarn defect detection device according to claim 1, characterized in that: A contact sensor is arranged on the frame on the side of the driving rod (3) away from the incoming line section (100), the driving rod (3) is functionally connected to the contact sensor, the contact sensor is electrically connected to an information processing system, a movable swing plate (10) is arranged at the bottom of the end of the outgoing line section (102), a plurality of swing grooves (1000) are provided on the swing plate (10), a long rack (1001) is fixed on one side of the swing plate (10), the long rack (1001) is meshed with a gear (1100) fixed at the output end of the stepping motor (11), and the stepping motor (11) is electrically connected to the information processing system.

3. The yarn defect detection device according to claim 1, characterized in that: The number of the limiting rods (700) is four, and the four limiting rods (700) are fixed along the circumference of the upper rotating disk (701). The number of the clamping slots (703) on the lower rotating disk (702) is the same as that of the limiting rods (700), and an angle of 45° is formed between adjacent clamping slots (703) and the limiting rods (700).

4. The yarn defect detection device according to claim 1, characterized in that: The shape of the clamping slot (703) is semicircular, and the shape of the clamping block (9) is T-shaped.

5. The yarn defect detection device according to claim 4, characterized in that: The side of the clamping block (9) that cooperates with the clamping slot (703) is semicircular.

6. The yarn defect detection device according to claim 1, characterized in that: The long connecting rod (2) is parallel to the incoming line section (100).

7. The yarn defect detection device according to claim 1, characterized in that: The detection section (101) of the conveyor belt (1) is arranged in an isosceles trapezoid as a whole.

8. The yarn defect detection device according to claim 1, characterized in that: The marking machine is a coding marking machine.

9. The yarn defect detection device according to claim 1, characterized in that: A mechanical arm is provided at the end of the incoming line segment (100).

10. The yarn defect detection device according to claim 1, characterized in that: The yarn moisture regain and count detection device comprises a yarn length measuring instrument, a weighing machine and a drying machine.

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