A device for detecting the fuzziness of inner yarn

Abstract

This invention relates to the field of textile quality inspection technology, and discloses an inner yarn hairiness detection device, including a detection frame, a yarn detection structure, and a worktable. The detection frame is equipped with multiple yarn tubes and a tension adjuster. The yarn detection structure includes a support, on which a yarn flipping structure and a recording structure located above the yarn flipping structure are arranged. The worktable is equipped with a yarn winding machine and an industrial control display screen. The yarn flipping structure includes a rectangular frame fixed to the support. Multiple adjustable elastic slots are equidistantly arranged on one side of the rectangular frame, and a corresponding yarn guide wheel is arranged on the other side. A power component is also provided on the rectangular frame to control the synchronous rotation of the multiple adjustable elastic slots. This invention has the following advantages and effects: it can efficiently and intuitively detect and quantitatively analyze the hairiness of the entire yarn surface.

Description

Technical Field

[0001] This invention relates to the field of textile quality testing technology, and in particular to a device for detecting the hairiness of inner yarn. Background Technology

[0002] In the yarn production process, hairiness (i.e., fiber ends or loops protruding from the surface of the yarn) is one of the key indicators for measuring yarn quality.

[0003] Traditional methods for detecting inner yarn hairiness often involve manual visual inspection or comparison on a blackboard instrument, resulting in low efficiency, high subjectivity, and poor repeatability. Furthermore, common automated hairiness detection equipment typically only tests hairiness on one side of the yarn surface, making it difficult to effectively and intuitively detect and quantify the hairiness on the other side. This limitation prevents a comprehensive assessment of the yarn's structure and weaving performance. Therefore, it is necessary to propose an inner yarn hairiness detection device to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide an inner yarn hairiness detection device, which can efficiently and intuitively detect and quantitatively analyze the hairiness of the entire surface of the yarn.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an inner yarn hairiness detection device, comprising a detection yarn frame, a yarn detection structure, and a worktable. The detection yarn frame is equipped with multiple yarn tubes and a tension adjuster. The yarn detection structure includes a support, on which a yarn flipping structure and a video recording structure located above the yarn flipping structure are provided. The worktable is equipped with a yarn winding machine and an industrial control display screen. The yarn flipping structure includes a rectangular frame fixed on the support. Multiple adjustable elastic slots are equidistantly arranged on one side of the rectangular frame, and a corresponding yarn guide wheel is arranged on the other side. The rectangular frame is also equipped with a power component for controlling the synchronous rotation of the multiple adjustable elastic slots.

[0006] By adopting the above technical solution, during testing, the yarn is drawn out from the yarn tube on the yarn detection frame, adjusted by the tension regulator, and then passes through the yarn detection structure. The yarn guide is pulled by the yarn winding machine. When the yarn passes through the yarn flipping structure, it is clamped by adjustable elastic slots. The power component drives all slots to rotate synchronously, causing the yarn segment clamped therein to twist and flip. The video recording structure (AI camera) located above records high-definition images of the entire surface of the yarn in real time during the flipping process and transmits them to the industrial control display screen for processing and analysis. This device realizes active exposure and automated visual inspection of the entire surface of the yarn, solving the problem of difficulty in observing the fuzz on the other side.

[0007] A further feature of the present invention is that the adjustable elastic slot includes a fixed sleeve fixedly mounted on a rectangular frame, a bushing rotatably connected to the fixed sleeve on one side near the guide wheel, a rotating frame mounted on the other side of the bushing, and a yarn inlet tube penetrating the fixed sleeve mounted on the rotating frame.

[0008] By adopting the above technical solution, the yarn enters from the yarn inlet tube, passes through the center of the bushing, the structure is smooth, and the rotating frame can rotate around the bushing, providing a basis for subsequent clamping and flipping actions.

[0009] A further feature of the present invention is that a pressure plate is rotatably connected inside the rotating frame, a downward pressing screw is installed on the top, a first spring is sleeved below the downward pressing screw and abuts against the upper surface of the pressure plate, and a baffle for limiting the first spring is also fixedly installed on the downward pressing screw.

[0010] By adopting the above technical solution, rotating the downward screw can adjust its pressure on the pressure plate, thereby changing the clamping force applied to the yarn by the first spring. This elastic clamping method can adapt to yarns of different thicknesses and materials, avoiding damage to the yarn due to excessive tightness or slippage due to excessive looseness, while not affecting the winding and conveying of the yarn, and ensuring the effective operation of the flipping action.

[0011] A further provision of the present invention is that a first soft pad is installed at the bottom of the inner side of the rotating frame, and a second soft pad is installed at the bottom of the pressure plate.

[0012] By adopting the above technical solution, the first and second soft pads are made of flexible materials (such as rubber and silicone) and are in direct contact with the yarn, further protecting the yarn from being scratched or generating new fuzz during clamping and turning, thus ensuring the accuracy of the test results.

[0013] A further configuration of the present invention is as follows: the power component includes a connecting frame fixed to one end of a rectangular frame, a motor is mounted on one end of the connecting frame, a reciprocating lead screw is mounted on the output end of the motor, a guide rod is mounted on the connecting frame below the reciprocating lead screw, a reciprocating slider is provided on the connecting frame and is helically connected to the reciprocating lead screw and slidably connected to the guide rod, a rack is fixedly mounted on the upper end of the reciprocating slider, a worm is rotatably connected to the rectangular frame, a gear adapted to the rack is mounted on the end of the worm, and a worm wheel adapted to the worm is fitted on the outside of the bushing.

[0014] By adopting the above technical solution, the motor drives the reciprocating lead screw to rotate, which in turn drives the reciprocating slider and rack to make linear reciprocating motion along the guide rod. The rack drives the gear meshing with it to rotate, thereby driving the worm to rotate. The worm meshes with the worm wheel on each adjustable elastic slot bushing, ultimately converting the rotational motion of the motor into synchronous reciprocating oscillation of all bushings and rotating frames (i.e., the turning action of the yarn). The worm gear transmission has self-locking properties and can stop at any position, which is convenient for the camera to capture accurately.

[0015] A further feature of the present invention is that the recording structure includes two AI cameras detachably mounted on the support, and the upper end of the support is also provided with an adjustment structure for adjusting the position of the two AI cameras.

[0016] By adopting the above technical solution, two AI cameras can simultaneously capture images of the flipped yarn segment from different angles (e.g., orthogonal directions), obtaining more comprehensive three-dimensional hair information. The structure can be adjusted to flexibly adjust the position and angle of the cameras according to yarn specifications and testing requirements to obtain the best imaging effect.

[0017] A further configuration of the present invention is as follows: the adjustment structure includes an adjustment track fixed to the top of the bracket, two sliding blocks are slidably installed in the adjustment track, the AI ​​camera is detachably installed below the sliding blocks, a positioning frame is fixed to the top of the bracket, a plurality of positioning holes are equidistantly arranged on the positioning frame, and a telescopic rod is installed on the top of the sliding block and inserted into one of the positioning holes.

[0018] By adopting the above technical solution, the sliding block can slide freely on the adjustment track to coarsely adjust the camera spacing. After the position is determined, the sliding block and camera can be quickly locked by inserting the telescopic rod into the corresponding positioning hole of the positioning frame. The operation is simple and the positioning is reliable.

[0019] A further embodiment of the present invention is that the telescopic rod includes a sleeve fixedly mounted on the top of the sliding block, a second spring and a round pad that compresses the second spring are provided inside the sleeve, both sides of the round pad are fixedly mounted with paddles that penetrate the sleeve and can slide up and down, and the top is fixedly mounted with the rod.

[0020] By adopting the above technical solution, when unlocking is required, press both sides of the lever simultaneously to move the round pad down and compress the second spring, causing the insertion rod to retract from the positioning hole, thus moving the sliding block. After releasing the lever, the insertion rod automatically pops out under the restoring force of the second spring and can be inserted into a new positioning hole to achieve locking. This structure enables quick adjustment and locking with one hand.

[0021] A further feature of the present invention is that a connecting plate is fixedly mounted on the bottom of the sliding block, passing through and slidably connected to the adjusting track, and a camera mounting bracket is fixedly mounted on the lower end of the connecting plate, and a locking bolt for mounting and fixing the AI ​​camera is provided on the camera mounting bracket.

[0022] By adopting the above technical solution, the connecting plate transmits the movement of the sliding block to the camera mounting bracket below. The camera mounting bracket fixes the AI ​​camera with locking bolts, ensuring the stability of the camera during shooting, and also facilitating the installation and removal of the camera.

[0023] The beneficial effects of this invention are:

[0024] 1. This invention, through its designed yarn flipping structure, can actively twist and flip the yarn in motion, effectively capturing the fiber structure and fuzz on the yarn surface. This solves the problem that traditional methods cannot directly detect the fuzz on the entire surface of the yarn. In addition, the invention uses an adjustable elastic slot to adjust the clamping force, which can meet the detection of different types of yarn and improve the applicability of the device.

[0025] 2. This invention, combining a high-resolution AI vision system and a flexibly adjustable camera bracket, can capture exposed hairs from multiple angles in high definition. The images are then processed and analyzed by an industrial control computer to achieve automated and quantitative detection of hairs, greatly improving detection efficiency and the objectivity and accuracy of the results. Furthermore, it can be used to detect different quantities of yarns, making it more versatile. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is an overall structural diagram of the inner yarn hair detection device of the present invention.

[0028] Figure 2 This is the present invention. Figure 1 A structural diagram of the yarn flipping structure.

[0029] Figure 3 This is the present invention. Figure 2 Diagram showing the connection structure between the adjustable elastic slot and the power component.

[0030] Figure 4 This is the present invention. Figure 1 Overall structural diagram of the adjustable elastic card slot.

[0031] Figure 5 This is the present invention. Figure 1 The overall structure diagram of the video recording structure.

[0032] Figure 6 This is the present invention. Figure 5 Structural diagram of the telescopic insertion rod

[0033] In the diagram, 1. Yarn detection frame; 2. Workbench; 3. Yarn tube; 4. Tension adjuster; 5. Support; 6. Yarn flipping structure; 61. Rectangular frame; 62. Adjustable elastic slot; 621. Fixing sleeve; 622. Bushing; 623. Rotating frame; 624. Yarn inlet tube; 625. Pressure plate; 626. Downward pressure screw; 627. First spring; 628. Baffle; 629. First soft pad; 630. Second soft pad; 63. Yarn guide wheel; 64. Power unit; 641. Connecting frame; 64 2. Motor; 643. Reciprocating lead screw; 644. Guide rod; 645. Reciprocating slider; 646. Rack; 647. Worm gear; 648. Worm wheel; 649. Gear; 7. Recording structure; 71. AI camera; 72. Adjusting track; 73. Sliding block; 74. Positioning frame; 75. Sleeve; 76. Second spring; 77. Round washer; 78. Pulley; 79. Connecting plate; 710. Camera mounting bracket; 711. Locking bolt; 712. Insert rod; 8. Yarn spinning machine; 9. Industrial control display screen. Detailed Implementation

[0034] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1-6 As shown, an inner yarn hairiness detection device includes a detection yarn frame 1, a yarn detection structure, and a workbench 2. The detection yarn frame 1 is equipped with multiple yarn tubes 3 and a tension regulator 4. The yarn detection structure includes a support 5, on which a yarn flipping structure 6 and a recording structure 7 located above the yarn flipping structure 6 are provided. The workbench 2 is equipped with a yarn winding machine 8 and an industrial control display screen 9. The yarn flipping structure 6 includes a rectangular frame 61 fixed to the support 5. Multiple adjustable elastic slots 62 are equidistantly arranged on one side of the rectangular frame 61, and a corresponding guide wheel 63 is provided on the other side. The rectangular frame 61 is also equipped with a power component 64 that controls the synchronous rotation of the multiple adjustable elastic slots 62. The yarn to be tested is wound onto the yarn tubes 3 of the detection yarn frame 1, adjusted to a suitable tension by the tension regulator 4, and then led out.

[0036] Furthermore, the adjustable elastic slot 62 includes a fixed sleeve 621 fixed on a rectangular frame 61. A bushing 622 is rotatably connected to the fixed sleeve 621 on one side near the guide wheel 63. A rotating frame 623 is mounted on the other side of the bushing 622. A yarn inlet tube 624 penetrating the fixed sleeve 621 is mounted on the rotating frame 623. A pressure plate 625 is rotatably connected inside the rotating frame 623, and a pressing screw 626 is mounted on its top. A first threaded part is fitted below the pressing screw 626, abutting against the upper surface of the pressure plate 625. A spring 627 is provided, and a baffle 628 for limiting the first spring 627 is also fixedly installed on the pressing screw 626. A first soft pad 629 is installed on the bottom of the inner side of the rotating frame 623, and a second soft pad 630 is installed on the bottom of the pressure plate 625. The yarn first passes through the yarn inlet tube 624 of the yarn flipping structure 6 in the yarn detection structure. By rotating the pressing screw 626 and adjusting the pressure plate 625, the yarn is flexibly clamped between the first soft pad 629 and the second soft pad 630 by the pressure of the first spring 627 on the yarn.

[0037] Furthermore, the power component 64 includes a connecting frame 641 fixed to one end of the rectangular frame 61. A motor 642 is mounted on one end of the connecting frame 641, and a reciprocating lead screw 643 is mounted on the output end of the motor 642. A guide rod 644 is mounted on the connecting frame 641 below the reciprocating lead screw 643. A reciprocating slider 645 is provided on the connecting frame 641, which is helically connected to the reciprocating lead screw 643 and slidably connected to the guide rod 644. A rack 646 is fixedly mounted on the upper end of the reciprocating slider 645. A worm gear 647 is rotatably connected to the rectangular frame 61. A gear 649 adapted to the rack 646 is mounted on the end of the worm gear 647. A worm wheel adapted to the worm gear 647 is fitted on the outside of the bushing 622. 648. Start the motor 642 of the power unit 64. The motor 642 drives the reciprocating screw 643 to rotate, which drives the reciprocating slider 645 and the rack 646 fixed thereon to move linearly back and forth along the guide rod 644. The rack 646 drives the gear 649 that meshes with it to rotate, thereby driving the worm 647 that is fixed coaxially with the gear 649 to rotate. The worm 647 meshes with the worm wheel 648 fitted on the bushing 622 of each adjustable elastic slot 62. The rotation of the worm 647 drives all the worm wheels 648 and the bushing 622 to swing back and forth synchronously and at the same angle. The swing of the bushing 622 causes the rotating frame 623 fixed thereto and the yarn segment clamped therein to rotate and twist periodically, thereby exposing the entire surface of the yarn to the camera capture area.

[0038] Furthermore, the recording structure 7 includes two AI cameras 71 detachably mounted on the support 5. The upper end of the support 5 is also provided with an adjustment structure for adjusting the positions of the two AI cameras 71. The adjustment structure includes an adjustment rail 72 fixed to the top of the support 5, with two sliding blocks 73 slidably mounted within the adjustment rail 72. The AI ​​cameras 71 are detachably mounted below the sliding blocks 73. A positioning frame 74 is fixed to the top of the support 5, with multiple positioning holes equidistantly arranged on the positioning frame 74. A telescopic rod is installed on the top of the sliding block 73, inserting into one of the positioning holes. The telescopic rod includes a sleeve 75 fixed to the top of the sliding block 73, with a second spring 76 and a round pad 77 that compresses the second spring 76 inside the sleeve 75. Both sides of the round pad 77 are fixedly fitted with paddles 78 that penetrate the sleeve 75 and can slide up and down. A rod 712 is fixed to the top. A connector that penetrates the adjustment rail 72 and is slidably connected to the bottom of the sliding block 73 is fixedly fitted therewith. The lower end of the connecting plate 79 is fixedly equipped with a camera mounting bracket 710. The camera mounting bracket 710 is provided with locking bolts 711 for mounting and fixing the AI ​​camera 71. The two AI cameras 71 located directly above the yarn flipping structure 6 start working, taking high-speed, high-definition pictures of the flipping yarn segment from different angles. The AI ​​camera 71 is mounted on the camera mounting bracket 710 and fixed by the locking bolts 711. Its horizontal position can be coarsely adjusted by sliding the sliding block 73 on the adjustment track 72. The insertion rod 712 is retracted by pressing the lever 78 to unlock it. After releasing, it is inserted into different positioning holes on the positioning frame 74 for precise positioning and locking. The captured image data is transmitted in real time to the industrial control display screen 9 on the workbench 2. The industrial control computer has a built-in image processing algorithm that can automatically identify, count and analyze the length, quantity, distribution and other characteristics of the yarn surface and exposed internal hairs, and generate a detection report. The yarn winding machine 8 pulls the yarn through the detection area at a constant speed to achieve continuous and automated detection.

[0039] The working principle of this invention is as follows: During operation, the yarn is continuously pulled through the detection zone under constant tension. When the yarn reaches the yarn flipping structure, it is clamped by the elastic slot and periodically flipped as the slot swings back and forth. This flipping action exposes the entire yarn surface to the AI ​​camera capture area. The AI ​​camera located above simultaneously captures high-definition images of the yarn surface during the flipping process. The image data is transmitted to the computer for real-time processing. Through specialized visual algorithms, various indicators of internal hairiness are identified and quantified. The entire system achieves non-destructive, online, and automated quantitative detection of internal hairiness in yarn, greatly improving detection efficiency and accuracy, and providing reliable data support for yarn quality control and process improvement.

Claims

1. A device for detecting the fuzziness of inner yarn, characterized in that: The system includes a yarn detection frame (1), a yarn detection structure, and a workbench (2). The yarn detection frame (1) is equipped with multiple yarn tubes (3) and a tension regulator (4). The yarn detection structure includes a support (5). The support (5) is equipped with a yarn flipping structure (6) and a video recording structure (7) located above the yarn flipping structure (6). The workbench (2) is equipped with a yarn winding machine (8) and an industrial control display screen (9). The yarn flipping structure (6) includes a rectangular frame (61) fixed on the support (5). Multiple adjustable elastic slots (62) are equidistantly arranged on one side of the rectangular frame (61), and a corresponding guide wheel (63) is arranged on the other side. The rectangular frame (61) is also equipped with a power component (64) that controls the synchronous rotation of the multiple adjustable elastic slots (62).

2. The inner yarn hairiness detection device according to claim 1, characterized in that: The adjustable elastic slot (62) includes a fixed sleeve (621) fixed on a rectangular frame (61). The fixed sleeve (621) is rotatably connected to a bushing (622) on one side near the guide wheel (63). A rotating frame (623) is installed on the other side of the bushing (622). A yarn inlet tube (624) that passes through the fixed sleeve (621) is installed on the rotating frame (623).

3. The inner yarn hairiness detection device according to claim 2, characterized in that: The rotating frame (623) is rotatably connected to a pressure plate (625), and a pressing screw (626) is installed on the top. A first spring (627) is sleeved below the pressing screw (626) and abuts against the upper end face of the pressure plate (625). A baffle (628) for limiting the first spring (627) is also fixed on the pressing screw (626).

4. The inner yarn hairiness detection device according to claim 3, characterized in that: A first soft pad (629) is installed on the bottom of the inner side of the rotating frame (623), and a second soft pad (630) is installed on the bottom of the pressure plate (625).

5. The inner yarn hairiness detection device according to claim 4, characterized in that: The power component (64) includes a connecting frame (641) fixed to one end of a rectangular frame (61), a motor (642) is installed at one end of the connecting frame (641), a reciprocating lead screw (643) is installed on the output end of the motor (642), a guide rod (644) is installed on the connecting frame (641) below the reciprocating lead screw (643), a reciprocating slider (645) is provided on the connecting frame (641) and is helically connected to the reciprocating lead screw (643) and slidably connected to the guide rod (644), a rack (646) is fixedly installed at the upper end of the reciprocating slider (645), a worm gear (647) is rotatably connected to the rectangular frame (61), a gear (649) adapted to the rack (646) is installed at the end of the worm gear (647), and a worm wheel (648) adapted to the worm gear (647) is fitted on the outside of the bushing (622).

6. The inner yarn hairiness detection device according to claim 1, characterized in that: The video recording structure (7) includes two AI cameras (71) that can be detachably mounted on the bracket (5). The upper end of the bracket (5) is also provided with an adjustment structure for adjusting the position of the two AI cameras (71).

7. The inner yarn hairiness detection device according to claim 6, characterized in that: The adjustment structure includes an adjustment track (72) fixed to the top of the bracket (5), two sliding blocks (73) are slidably installed in the adjustment track (72), the AI ​​camera (71) is detachably installed below the sliding block (73), a positioning frame (74) is fixed to the top of the bracket (5), a plurality of positioning holes are equidistantly arranged on the positioning frame (74), and a telescopic rod that is inserted into a positioning hole is installed on the top of the sliding block (73).

8. The inner yarn hairiness detection device according to claim 7, characterized in that: The telescopic rod includes a sleeve (75) fixedly mounted on the top of the sliding block (73), a second spring (76) and a round pad (77) that compresses the second spring (76) are provided inside the sleeve (75), and paddles (78) that pass through the sleeve (75) and can slide up and down are fixedly mounted on both sides of the round pad (77), and a rod (712) is fixedly mounted on the top.

9. The inner yarn hairiness detection device according to claim 7, characterized in that: The bottom of the sliding block (73) is fixedly fitted with a connecting plate (79) that passes through the adjustment rail (72) and is slidably connected thereto. The lower end of the connecting plate (79) is fixedly fitted with a camera mounting bracket (710). The camera mounting bracket (710) is provided with locking bolts (711) for mounting and fixing the AI ​​camera (71).

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