A yarn diameter online measurement and feedback device

Abstract

This invention discloses an online yarn diameter measurement and feedback device, which relates to the field of yarn inspection. The device includes a work frame with an X-axis track on one side of the top of the work frame and a first motor at one end of the X-axis track. A detection mechanism is located on one side of the top of the worktable. This online yarn diameter measurement and feedback device integrates an image detection module, a yarn external burr detection module, and an information transceiver module within a detection camera. After acquiring an image of the yarn's external surface, the detection camera can identify damaged areas, creases, and burr information on the yarn surface. The identification results are converted into digital signals, and the information transceiver module generates control commands that are sent to a laser emitter. This allows the image detection path and the laser detection path to work together, achieving the goal of simultaneously measuring the yarn diameter and acquiring yarn surface condition information, while reducing the need for manual judgment.

Description

Technical Field

[0001] This invention relates to the field of yarn testing technology, specifically to an online yarn diameter measurement and feedback device. Background Technology

[0002] During the production, conveying, and winding processes of yarn, its diameter parameter is correlated with yarn quality, subsequent weaving conditions, and the consistency of the finished product. Therefore, online measurement of yarn diameter is necessary. Online measurement allows for the acquisition of diameter changes while the yarn is in continuous motion, enabling operators or control systems to promptly monitor the yarn's operating status and adjust processes accordingly. However, current online diameter measurement processes typically focus only on detecting the yarn diameter itself, failing to simultaneously acquire information on surface abnormalities such as damage, creases, and burrs, resulting in a limited range of detection capabilities. When abnormalities have already appeared on the yarn surface but the diameter change is not yet significant, relying solely on diameter measurement is insufficient to detect the problem promptly, thus affecting the accuracy of the measurement results in reflecting the actual quality of the yarn.

[0003] Publication number CN100412249C discloses a non-contact device for measuring the diameter of moving yarns or yarn-like textiles. This device utilizes an optical yarn sensor, a comparator, an ASIC circuit with a shadow pixel counter, and a data bus module to perform non-contact detection of moving yarns. The optical yarn sensor acquires the optical signal generated when the yarn passes through the detection area. The comparator compares and processes the sensor's output signal. The shadow pixel counter acquires data related to the yarn diameter based on the number of obscured pixels. The measurement results are then transmitted to a control and / or computing processor via the data bus module. This technology achieves online measurement of the diameter parameter of moving yarns through optical detection and signal processing, thus solving the problem that manual measurement is difficult to adapt to continuous production.

[0004] However, the technical methods of the aforementioned comparative documents mainly revolve around obtaining yarn diameter parameters. Their detection is based on optical obstruction signals and pixel counting results. They lack corresponding image recognition processing structures for appearance conditions such as yarn surface damage, creases, and burrs, thus eliminating these factors that may affect the detection of yarn diameter.

[0005] Therefore, in order to address the shortcomings of the existing system, an online yarn diameter measurement and feedback device was proposed. Summary of the Invention

[0006] The purpose of this invention is to provide an online yarn diameter measurement and feedback device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an online yarn diameter measurement and feedback device, comprising: a work frame, an X-axis track is provided on one side of the top of the work frame, a first motor is provided at one end of the X-axis track, a Y-axis track is provided on the top of the X-axis track, a second motor is provided at one end of the Y-axis track, a worktable is provided on the top of the Y-axis track, and a detection mechanism is provided on one side of the top of the worktable, the detection mechanism including an upper guard frame, the upper guard frame being disposed on one side of the top of the worktable; A support frame is provided on the other side of the top of the work frame. A control panel is provided on the front of the support frame. A rectangular slot is provided in the middle of the top of the support frame. A rectangular platform is provided in the middle of the rectangular slot. A laser emitting head is provided on the top of the rectangular platform. A first electrically controlled telescopic rod is provided on the top of the rectangular platform. A first vertical shaft is provided on both sides of the rectangular platform. A first spring is provided on the outside of the first vertical shaft. An auxiliary mechanism is provided on the side of the top of the workbench away from the upper guardrail. The auxiliary mechanism includes a restraint frame, which is located on the other side of the top of the workbench.

[0008] Furthermore, the detection camera integrates an image detection module, a yarn external burr detection module, and an information transceiver module. The detection camera is used to capture external images of the yarn being detected and transmit the captured external images of the yarn to the image detection module.

[0009] Furthermore, the image detection module is built based on the YOLOv8 learning model and is used to extract, identify and analyze the edge signals or features corresponding to the damaged areas and crease areas in the external image of the yarn. The external yarn fray detection module is used to detect the external yarn fray information by combining the edge signals or features, and convert the detected feature information into digital signals.

[0010] Furthermore, the information transceiver module is communicatively connected to the image detection module and the yarn external burr detection module, respectively, for receiving the digital signal, processing the digital signal to generate corresponding control commands, and sending the control commands to the laser emitting head so that the laser emitting head performs corresponding operations according to the control commands.

[0011] Furthermore, the detection mechanism also includes a third motor, a wire clamping plate, a duckbill plate, a pivot, an outer circular frame, a bearing, a center wheel, an angle spring, a side notch, a push rod, a side wheel, a sliding shaft, and a hemispherical block. The third motor is located on one side of the top of the upper guard frame. A pivot is located at the bottom of the third motor. A bearing is located outside the bottom end of the pivot. An outer circular frame is located outside the bearing. A rectangular groove is formed annularly on the outer side of the outer circular frame. A wire clamping plate is rotatably mounted inside the rectangular groove. The plate has symmetrical side notches on both sides. A sliding shaft is provided inside the side notch. A push rod is sleeved on the outside of the sliding shaft. A third spring is also sleeved on the outside of the sliding shaft. A shaft is provided laterally at one end of the sliding shaft. A central wheel is sleeved in the middle of the shaft. Side wheels are provided on both sides of the shaft. An angle spring is provided between the bottom of one end of the wire clamping plate and the rectangular groove of the outer circular frame. A duckbill plate is provided at the connection between the bearing and the pivot. A hemispherical block is provided on the bottom of the duckbill plate near the wire clamping plate.

[0012] Furthermore, the overall structure of the cable clamp is U-shaped, and the push rod and the sliding shaft form a sliding structure.

[0013] Furthermore, the diameter of the central wheel is larger than the diameter of the side wheel, and the center of the central wheel and the center of the side wheel are on the same straight line.

[0014] Furthermore, the rotation direction of the duckbill piece is the same as the rotation direction of the pivot, and when the bottom of the hemispherical block contacts the recessed area in the middle of the outer side of the wire clamping plate, the wire clamping plate will rotate downward.

[0015] Furthermore, the auxiliary mechanism also includes a vertical plate, a base frame, a light projection hole, a side frame, an extrusion piece, a bending piece, a rotating shaft, and a rotating block. The base frame is provided at both the front and rear ends of the top of the restraint frame. A light projection hole is provided in the middle of the top of the base frame. A rotating block is provided inside the light projection hole. A rotating shaft is provided inside the rotating block and the light projection hole. A bending piece is provided on one side of the rotating block. An extrusion piece is provided on the other side of the rotating block. A vertical plate is provided on one side of the extrusion piece. A second electrically controlled telescopic rod is provided at the bottom of the restraint frame. Protrusions are provided on both sides of the restraint frame. A vertical shaft is vertically inserted through the inner side of the protrusion. A fourth spring is sleeved on the outside of the vertical shaft. A side frame is provided on the entire outside of the vertical shaft.

[0016] Furthermore, the protrusions on both sides of the restraint frame form a sliding structure with the vertical axis, and a protruding arc-shaped structure is provided on the side of the extrusion member near the rotating block. The protruding arc-shaped structure on the outside of the rotating block near the outside of the extrusion member will rotate.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention integrates an image detection module, a yarn external burr detection module, and an information transceiver module into the detection camera. After acquiring an image of the yarn's external surface, the detection camera can identify damaged areas, creases, and burr information on the yarn surface. The identification results are converted into digital signals, and the information transceiver module generates control commands to send to the laser emitter. This allows the image detection path and the laser detection path to work together, achieving the goal of acquiring yarn surface condition information while measuring yarn diameter, and reducing the need for manual judgment. 2. This invention, by setting up a third motor, pivot, duckbill plate, hemispherical block, wire clamping plate, center wheel, side wheel, push rod, and sliding shaft, enables the detection camera to identify that the yarn is damaged or bent. The third motor can drive the duckbill plate and hemispherical block to rotate and press the corresponding yarn part. With the concave area of ​​the wire clamping plate and the displacement structure of the center wheel and side wheel, the problematic yarn is guided, limited, and blocked, thereby preventing the problematic part from continuing to enter the detection area and providing a basis for subsequent processing. 3. This invention, by setting up a binding frame, a second electrically controlled telescopic rod, a base frame, a light projection hole, a rotating block, a rotating shaft, an extruder, and a bending plate, enables the second electrically controlled telescopic rod to drive the binding frame to move after the detection camera detects a problem on the yarn surface. The extruder pushes the rotating block to rotate around the rotating shaft and drives the bending plate to rotate to the light projection hole, blocking the laser beam from the laser emitter. This cuts off the laser irradiation path at the corresponding position of the abnormal yarn, preventing measurement from continuing under abnormal conditions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the yarn diameter online measurement and feedback device of the present invention; Figure 2 This is a schematic diagram of the external structure of the online yarn diameter measurement and feedback device of the present invention from another perspective; Figure 3 This invention relates to an online yarn diameter measurement and feedback device. Figure 2 A magnified structural diagram at point A; Figure 4 This is a bottom view schematic diagram of the external structure of the online yarn diameter measurement and feedback device of the present invention; Figure 5 This is a schematic diagram of the front axonometric structure of the online yarn diameter measurement and feedback device of the present invention; Figure 6 This invention relates to an online yarn diameter measurement and feedback device. Figure 5 A magnified structural diagram at point B; Figure 7 This invention relates to an online yarn diameter measurement and feedback device. Figure 5 A magnified structural diagram at point C; Figure 8This is a side view of the upper guard frame structure of the yarn diameter online measurement and feedback device of the present invention; Figure 9 This invention relates to an online yarn diameter measurement and feedback device. Figure 8 A magnified structural diagram at point E; Figure 10 This invention relates to an online yarn diameter measurement and feedback device. Figure 8 A magnified structural diagram at point F.

[0019] In the diagram: 1. First motor; 2. Work frame; 3. X-axis track; 4. Worktable; 5. Second motor; 6. Control panel; 7. Laser emitter; 8. Support frame; 9. Third motor; 10. Upper guard frame; 11. Y-axis track; 12. Cable clamping plate; 13. Duck tongue plate; 14. Pivot; 15. External circular frame; 16. Light projection hole; 17. Restraint frame; 18. Vertical plate; 19. Base frame; 20. Side frame; 21. Bearing; 22. First electrically controlled telescopic rod; 23. Detection camera; 24. First vertical axis; 25. First spring; 26. Extruded part; 27. Bending piece; 28. Center wheel; 29. ​​Angle spring; 30. Side notch; 31. Push rod; 32. Side wheel; 33. Sliding shaft; 34. Rotating shaft; 35. Rotating block; 36. Hemispherical block. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example: like Figures 1 to 10 As shown, an online yarn diameter measurement and feedback device includes: a work frame 2, an X-axis rail 3 is provided on one side of the top of the work frame 2, a first motor 1 is provided at one end of the X-axis rail 3, a Y-axis rail 11 is provided on the top of the X-axis rail 3, a second motor 5 is provided at one end of the Y-axis rail 11, a worktable 4 is provided on the top of the Y-axis rail 11, and a detection mechanism is provided on one side of the top of the worktable 4. The detection mechanism includes an upper guard 10, which is located on one side of the top of the worktable 4. A support frame 8 is provided on the other side of the top of the work frame 2. A control panel 6 is provided on the front of the support frame 8. A rectangular slot is provided in the middle of the top of the support frame 8. A rectangular platform is provided in the middle of the rectangular slot. A laser emitter 7 is provided on the top of the rectangular platform. A first electrically controlled telescopic rod 22 is provided on the top of the rectangular platform. A first vertical shaft 24 is provided vertically on both sides of the rectangular platform. A first spring 25 is provided on the outside of the first vertical shaft 24. An auxiliary mechanism is provided on the top side of the workbench 4 away from the upper guard 10. The auxiliary mechanism includes a restraint frame 17, which is located on the other side of the top of the workbench 4. The work frame 2 serves as the mounting base for the entire machine. Its purpose is to support the X-axis track 3, support frame 8, and worktable 4, ensuring that the detection mechanism, laser detection mechanism, and auxiliary mechanisms are within the same installation system, facilitating the alignment of the yarn conveying path with the detection path. The X-axis track 3 provides a lateral movement path. The first motor 1 drives the internal screw structure of the X-axis track 3, thereby moving the Y-axis track 11 along the X-axis direction to adjust the detection position laterally. The Y-axis track 11 provides a longitudinal movement path. The second motor 5 drives the internal screw structure of the Y-axis track 11, causing the worktable 4 to move longitudinally, thus aligning the yarn detection area with the projection area of ​​the laser emitter 7.

[0022] The workbench 4 is used to support the yarn being tested, as well as the testing mechanism and auxiliary mechanisms. The purpose of the workbench 4 is to provide a placement position for the yarn and to provide installation positions for the testing camera 23, the wire clamping plate 12, and the binding frame 17. The support frame 8 is used to support the control panel 6, the first electrically controlled telescopic rod 22, and the laser emitter 7. The purpose of the support frame 8 is to position the laser testing components above the workbench 4, thereby forming a top-down diameter measurement path. The control panel 6 is used to receive operating commands and output control signals. The purpose of the control panel 6 is to establish the control relationship between the manual operation end and the first motor 1, the second motor 5, the first electrically controlled telescopic rod 22, and the testing camera 23.

[0023] The first electrically controlled telescopic rod 22 is used to drive the rectangular platform to move up and down. The purpose of setting up the rectangular platform is to serve as a mounting component for the laser emitter 7, facilitating the vertical adjustment of the laser emitter 7 so that yarns of different diameters are within the laser measurement area. The first vertical axis 24 is used to limit the vertical movement trajectory of the rectangular platform. The purpose of setting up the first vertical axis 24 is to provide guidance for the rectangular platform and reduce the offset of the rectangular platform during the lifting and lowering process. The first spring 25 is used to push the rectangular platform to reset after the first electrically controlled telescopic rod 22 retracts or stops outputting. The purpose of setting up the first spring 25 is to allow the laser emitter 7 to return to the initial position after one detection, so that subsequent detection cycles can continue. The laser emitter 7 is used to emit a detection beam into the area where the yarn is located. The purpose of setting up the laser emitter 7 is to measure the yarn diameter based on whether the beam is blocked or passed through by the yarn, and to receive control commands from the information transceiver module to adjust the detection action in conjunction with the image recognition results.

[0024] Example 1: As Figures 1 to 10As shown, the detection camera 23 integrates an image detection module, a yarn external burr detection module, and an information transceiver module. The detection camera 23 is used to capture the external image of the yarn being detected and transmit the captured external image of the yarn to the image detection module. The image detection module is built based on the YOLOv8 learning model and is used to extract, identify and analyze the edge signals or features corresponding to the damaged areas and crease areas in the yarn external image. The yarn external burr detection module is used to detect the yarn external burr information by combining the edge signals or features and convert the detected feature information into digital signals. The information transceiver module is communicatively connected to the image detection module and the yarn external burr detection module, respectively. It is used to receive digital signals, process the digital signals to generate corresponding control commands, and send the control commands to the laser emitter 7 so that the laser emitter 7 can perform corresponding operations according to the control commands. The detection camera 23 is used to acquire image information of the outer surface of the yarn. The purpose of setting up the detection camera 23 is to add an image detection path in addition to laser detection, so that the system can acquire information on yarn surface damage, creases, and burrs in addition to diameter information. The image detection module, the yarn external burr detection module, and the information transceiver module are integrated into the detection camera 23. The purpose is to shorten the transmission path between image acquisition, signal processing, and command transmission, so that the image acquisition end and the analysis end are set up accordingly, reducing the number of external connections, and making the camera, analysis, and feedback actions revolve around the same detection position.

[0025] The image detection module receives images of the yarn's exterior captured by the detection camera 23 and identifies and processes the contours, textures, and edge variation areas within the images. This module is built upon the YOLOv8 learning model. Its purpose is to locate damaged and creased areas on the yarn surface and output corresponding edge or feature signals. The YOLOv8 model enables the image detection module to classify and locate target areas in the yarn's outer surface image based on the parameter relationships formed in the training samples, thereby transforming the raw image data into defect feature data that can be used for subsequent judgment. The purpose of extracting edge signals or features is to separate locations with variations on the yarn surface from the entire image, facilitating further processing by subsequent modules around these areas.

[0026] The yarn external burr detection module receives edge or feature signals output by the image detection module and performs further detection around the outward-extending portion of the yarn edge. The purpose of this module is to separate the detection of damage, creases, and burrs, allowing the image detection module to handle defect area identification while the burr detection module determines the outward extension of the edge, thus enabling different processing methods for different defect types. The module converts burr information into digital signals to quantify image features into transmittable, comparable, and triggerable data, providing the input basis for the information transceiver module to execute subsequent instructions.

[0027] The information transceiver module is communicatively connected to both the image detection module and the yarn external burr detection module. This module serves as a signal conversion unit between the image analysis results and the execution components. After receiving digital signals, the information transceiver module performs judgment, encoding, and output processing, converting data corresponding to the defect location and type into control commands, which are then sent to the laser emitter 7. This enables the laser emitter 7 to change its operating state or perform corresponding detection actions based on the image detection results, thereby establishing a linkage between yarn surface condition recognition and yarn diameter measurement. Through this setup, the detection camera 23 completes image acquisition, the image detection module completes defect recognition, the yarn external burr detection module completes burr quantification, and the information transceiver module completes command transmission, forming a processing link from image input to control output.

[0028] Example 2: Figures 1 to 10 As shown, the detection mechanism also includes a third motor 9, a wire clamping plate 12, a duckbill plate 13, a pivot 14, an outer circular frame 15, a bearing 21, a center wheel 28, an angle spring 29, a side notch 30, a push rod 31, a side wheel 32, a sliding shaft 33, and a hemispherical block 36. The third motor 9 is located on one side of the top of the upper guard frame 10. A pivot 14 is located at the bottom of the third motor 9. A bearing 21 is located on the outside of the bottom end of the pivot 14. An outer circular frame 15 is located on the outside of the bearing 21. A rectangular groove is formed on the outer side of the outer circular frame 15. The wire clamping plate 12 is rotatably mounted on the inner side of the rectangular groove. The cable clamping plate 12 has symmetrical side notches 30 on both sides. A sliding shaft 33 is provided inside the side notch 30. A push rod 31 is sleeved on the outside of the sliding shaft 33. A third spring is also sleeved on the outside of the sliding shaft 33. A shaft is provided laterally at one end of the sliding shaft 33. A central wheel 28 is sleeved in the middle of the shaft. Side wheels 32 are provided on both sides of the shaft. An angle spring 29 is provided between the bottom of one end of the cable clamping plate 12 and the rectangular groove of the outer circular frame 15. A duckbill plate 13 is provided at the connection between the bearing 21 and the pivot 14. A hemispherical block 36 is provided on the bottom of the duckbill plate 13 near the side of the cable clamping plate 12. The overall structure of the wire clamp plate 12 is U-shaped, and the push rod 31 and the sliding shaft 33 form a sliding structure. The diameter of the center wheel 28 is larger than the diameter of the side wheel 32, and the center of the center wheel 28 and the center of the side wheel 32 are on the same straight line. The rotation direction of the duckbill plate 13 is the same as that of the pivot 14. When the bottom of the hemispherical block 36 contacts the recessed area in the middle of the outer side of the wire clamping plate 12, the wire clamping plate 12 will rotate downward. The third motor 9 provides rotational driving force to drive the pivot 14, causing the duckbill plate 13 and hemispherical block 36 connected to the pivot 14 to move along a predetermined trajectory, thereby pressing and guiding a local area of ​​the yarn. The pivot 14 transmits the rotational force of the third motor 9, establishing a power transmission relationship between the third motor 9 and the duckbill plate 13. The bearing 21 is located outside the bottom end of the pivot 14, forming a rotatable connection between the pivot 14 and the outer circular frame 15. The outer circular frame 15 serves as the mounting base for the wire clamping plate 12 and the bearing 21, creating an enclosing area below the detection camera 23, allowing the rotating components, pressing components, and limiting components to be arranged around the yarn detection position.

[0029] The thread clamping plate 12 is rotatable and is housed within the rectangular groove of the outer circular frame 15. Its purpose is to catch damaged or bent sections of yarn and, under the action of the duckbill plate 13 and the hemispherical block 36, create a space for pressing the yarn into the affected area. The U-shaped structure of the thread clamping plate 12 provides a accommodating area for the downward movement of the yarn, allowing the problematic section to enter the recessed area and cooperate with the center wheel 28 and the side wheel 32. An angle spring 29 is positioned between one end of the thread clamping plate 12 and the rectangular groove of the outer circular frame 15. Its purpose is to push the thread clamping plate 12 back to its initial position after the external force is released, giving the thread clamping plate 12 a reset capability. Side notches 30 are formed on both sides of the thread clamping plate 12, providing installation and movement space for the lateral movement of the sliding shaft 33 and the push rod 31.

[0030] The sliding shaft 33 is used to limit the movement path of the push rod 31. The purpose of setting the sliding shaft 33 is to allow the push rod 31 to slide in a preset direction. The push rod 31 is sleeved on the outside of the sliding shaft 33 and cooperates with the third spring. Its purpose is to move to both sides when the center wheel 28 and the side wheel 32 are squeezed by the yarn, and return to the original position after the force is released. The purpose of setting the third spring is to provide a restoring force for the push rod 31, so that the center wheel 28 and the side wheel 32 return to their original positions after one clamping action. A shaft is set at one end of the push rod 31, and the center wheel 28 and the side wheel 32 are mounted on the shaft. Its purpose is to convert the contact action when the yarn passes through into wheel rotation and push rod displacement.

[0031] The center wheel 28 is located in the middle of the shaft, and the side wheels 32 are located on both sides of the shaft. The purpose of setting the center wheel 28 and the side wheels 32 is to form a rolling contact interface when the yarn enters the recessed area of ​​the yarn clamping plate 12, reducing the resistance during the yarn being pressed in, and responding to local diameter changes of the yarn through the distance between the wheels. The diameter of the center wheel 28 is larger than the diameter of the side wheels 32, and the center of the center wheel 28 is on the same straight line as the center of the side wheels 32. This is to ensure that the yarn first contacts the center wheel 28, and then cooperates with the two side wheels 32, so that when the problematic part of the yarn enters the recessed area of ​​the yarn clamping plate 12, a corresponding guiding and clamping relationship is formed.

[0032] The duckbill plate 13 is located at the connection between the bearing 21 and the pivot 14, and its rotation direction is the same as that of the pivot 14. The purpose of the duckbill plate 13 is to allow the hemispherical block 36 to move around a designated area on the yarn surface. The hemispherical block 36 is located at the bottom of the duckbill plate 13 near the yarn clamping plate 12. Its purpose is to apply a downward force to the problematic area of ​​the yarn in a point-contact manner, so that the damaged, bent, or deformed area enters the recessed area of ​​the yarn clamping plate 12. When the detection camera 23 detects damage or bending on the outside of the yarn, the information transceiver module sends a control signal to the third motor 9. The third motor 9 drives the pivot 14 to rotate, which in turn rotates the duckbill plate 13 and the hemispherical block 36 to the corresponding positions. After the hemispherical block 36 presses down on the problematic part of the yarn, the yarn partially enters between the center wheel 28 and the side wheel 32. If the size of the yarn part is larger than the gap between the wheels, the center wheel 28 and the side wheel 32 push the push rod 31 to move along the sliding shaft 33, and the third spring is compressed. When the external force is released, the third spring pushes the push rod 31 to reset, and the center wheel 28 and the side wheel 32 return to their initial positions. The thread clamping plate 12 returns to its original position under the action of the angle spring 29. The purpose of this set of components is to press down, limit, and block the abnormal yarn parts detected by the image, preventing the abnormal area from continuing to enter the subsequent detection area.

[0033] Example 3: Figures 1 to 10 As shown, the auxiliary mechanism also includes a vertical plate 18, a base frame 19, a light projection hole 16, a side frame 20, an extrusion piece 26, a bending piece 27, a rotating shaft 34, and a rotating block 35. The base frame 19 is provided at the front and rear ends of the top of the restraint frame 17. A light projection hole 16 is provided in the middle of the top of the base frame 19. A rotating block 35 is provided inside the light projection hole 16. A rotating shaft 34 is provided inside the rotating block 35 and the light projection hole 16. A bending piece 27 is provided on one side of the rotating block 35. An extrusion piece 26 is provided on the other side of the rotating block 35. A vertical plate 18 is provided on one side of the extrusion piece 26. A second electrically controlled telescopic rod is provided at the bottom of the restraint frame 17. Protrusions are provided on both sides of the restraint frame 17. A vertical shaft is vertically inserted through the inner side of the protrusion. A fourth spring is sleeved on the outside of the vertical shaft. A side frame 20 is provided on the entire outside of the vertical shaft. The protrusions on both sides of the restraint frame 17 form a sliding structure with the vertical axis. The outer side of the extrusion piece 26 near the rotating block 35 is provided with a protruding arc-shaped structure. The protruding arc-shaped structure on the outer side of the rotating block 35 near the outer side of the extrusion piece 26 will rotate. The binding frame 17 serves as the main support component of the auxiliary mechanism. Its purpose is to mount the base frame 19, side frames 20, and the second electrically controlled telescopic rod, and to move up and down around the yarn position upon receiving a control signal. The second electrically controlled telescopic rod is located at the bottom of the binding frame 17, and its purpose is to drive the binding frame 17 to move vertically, allowing the base frame 19 and its light projection hole 16 to enter or exit the laser beam path. The binding frame 17 has protrusions on both sides, with a vertical shaft running through the inner side of each protrusion. A fourth spring is fitted outside the vertical shaft. The side frames 20 are located outside the vertical shaft, providing guidance and reset conditions for the lifting and lowering process of the binding frame 17. The protrusions on both sides of the binding frame 17 and the vertical shaft form a sliding structure, limiting the direction of movement of the binding frame 17 and ensuring that its up and down movements revolve around a predetermined path. The fourth spring pushes the binding frame 17 back to its initial position after the second electrically controlled telescopic rod stops outputting power.

[0034] The base frame 19 is located at both ends of the top of the restraint frame 17, serving as a mounting component for the light projection hole 16, the rotating block 35, and the rotating shaft 34. The light projection hole 16 is located at the center of the top of the base frame 19. Its purpose is to provide a passage for the laser beam emitted by the laser emitter 7, ensuring that the auxiliary mechanism does not obstruct the laser detection path when not in operation. The rotating block 35 is located inside the light projection hole 16, and the rotating shaft 34 is positioned between the rotating block 35 and the light projection hole 16. Its purpose is to allow the rotating block 35 to rotate around the rotating shaft 34, thereby changing the open state of the light projection hole 16.

[0035] An extrusion member 26 is disposed on one side of the rotating block 35, and a convex arc-shaped structure is formed on the side closest to the rotating block 35. The purpose of the extrusion member 26 is to apply extrusion force to the rotating block 35 during the lifting of the restraint frame 17, causing the rotating block 35 to rotate around the pivot 34. A vertical plate 18 is disposed on one side of the extrusion member 26, and its purpose is to serve as a mounting component for the extrusion member 26 and to maintain the positional relationship of the extrusion member 26 during the lifting and lowering of the restraint frame 17. A curved piece 27 is disposed on the other side of the rotating block 35, and its purpose is to rotate to the surface of the light projection hole 16 after the rotating block 35 rotates, forming a blocking component, thereby blocking the laser beam from continuing to pass through the light projection hole 16.

[0036] When the image detection module inside the detection camera 23 detects a problem on the yarn surface, the information transceiver module sends a control signal to the second electrically controlled telescopic rod, which pushes the restraint frame 17 upward. The restraint frame 17 drives the base frame 19 to move upward synchronously. During this process, the protruding arc-shaped structure of the extrusion member 26 contacts the rotating block 35 and pushes the rotating block 35 to rotate around the rotating shaft 34. When the rotating block 35 rotates, it drives the bending plate 27 to rotate. After the bending plate 27 rotates to the surface of the light projection hole 16, it blocks the beam of the laser emitter 7. The purpose of this set of components is to cut off the laser irradiation path after a problem is detected on the yarn surface, prevent the abnormal yarn from continuing to be in the laser measurement state, and establish a linkage between the image recognition result and the laser detection action. After the control signal is released, the restraint frame 17 returns to its initial position under the action of the fourth spring. The rotating block 35 and the bending plate 27 return to their original state with the restraint frame 17, and the light projection hole 16 reopens for the next detection.

[0037] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A yarn diameter online measurement and feedback device, comprising: The work frame (2) is characterized in that an X-axis rail (3) is provided on one side of the top of the work frame (2), a first motor (1) is provided at one end of the X-axis rail (3), a Y-axis rail (11) is provided on the top of the X-axis rail (3), a second motor (5) is provided at one end of the Y-axis rail (11), a worktable (4) is provided on the top of the Y-axis rail (11), and a detection mechanism is provided on one side of the top of the worktable (4). The detection mechanism includes an upper guard frame (10), which is located on one side of the top of the worktable (4). A support frame (8) is provided on the other side of the top of the work frame (2). A control panel (6) is provided on the front of the support frame (8). A rectangular groove is provided in the middle of the top of the support frame (8). A rectangular platform is provided in the middle of the rectangular groove. A laser emitter (7) is provided on the top of the rectangular platform. A first electrically controlled telescopic rod (22) is provided on the top of the rectangular platform. A first vertical shaft (24) is provided vertically on both sides of the rectangular platform. A first spring (25) is provided on the outside of the first vertical shaft (24). An auxiliary mechanism is provided on the side of the top of the workbench (4) away from the upper guardrail (10). The auxiliary mechanism includes a restraint frame (17), which is located on the other side of the top of the workbench (4).

2. The yarn diameter online measurement and feedback device according to claim 1, characterized in that, The detection camera (23) integrates an image detection module, a yarn external burr detection module, and an information transceiver module. The detection camera (23) is used to capture the external image of the yarn being detected and transmit the captured external image of the yarn to the image detection module.

3. The yarn diameter online measurement and feedback device according to claim 2, characterized in that, The image detection module is built based on the YOLOv8 learning model and is used to extract, identify and analyze the edge signals or features corresponding to the damaged areas and crease areas in the external image of the yarn. The yarn external burr detection module is used to detect the yarn external burr information by combining the edge signals or features and convert the detected feature information into digital signals.

4. The yarn diameter online measurement and feedback device according to claim 2, characterized in that, The information transceiver module is communicatively connected to the image detection module and the yarn external burr detection module, respectively, and is used to receive the digital signal, process the digital signal to generate corresponding control instructions, and send the control instructions to the laser emitter (7) so that the laser emitter (7) performs corresponding operations according to the control instructions.

5. The yarn diameter online measurement and feedback device according to claim 1, characterized in that, The detection mechanism also includes a third motor (9), a wire clamping plate (12), a duckbill plate (13), a pivot (14), an outer circular frame (15), a bearing (21), a center wheel (28), an angle spring (29), a side notch (30), a push rod (31), a side wheel (32), a sliding shaft (33), and a hemispherical block (36). The third motor (9) is located on one side of the top of the upper guard frame (10). The bottom of the third motor (9) is provided with a pivot (14). The bottom end of the pivot (14) is provided with a bearing (21). The bearing (21) is provided with an outer circular frame (15). The outer circular frame (15) has a rectangular groove in the outer ring. The wire clamping plate (12) is rotatably provided on the inner side of the rectangular groove. The wire clamping plate (12) has symmetrical side notches (30) on both sides. A sliding shaft (33) is provided inside the side notch (30). A push rod (31) is sleeved on the outside of the sliding shaft (33). A third spring is also sleeved on the outside of the sliding shaft (33). A shaft is provided laterally at one end of the sliding shaft (33). A center wheel (28) is sleeved in the middle of the shaft. Side wheels (32) are provided on both sides of the shaft. An angle spring (29) is provided between the bottom of one end of the wire clamping plate (12) and the rectangular groove of the outer circular frame (15). A duckbill piece (13) is provided at the connection between the bearing (21) and the pivot (14). A hemispherical block (36) is provided on the bottom of the duckbill piece (13) near the wire clamping plate (12).

6. The yarn diameter online measurement and feedback device according to claim 5, characterized in that, The overall structure of the wire clamp (12) is U-shaped, and the push rod (31) and the sliding shaft (33) form a sliding structure.

7. The yarn diameter online measurement and feedback device according to claim 5, characterized in that, The diameter of the center wheel (28) is larger than the diameter of the side wheel (32), and the center of the center wheel (28) and the center of the side wheel (32) are on the same straight line.

8. The yarn diameter online measurement and feedback device according to claim 5, characterized in that, The rotation direction of the duckbill piece (13) is the same as that of the pivot (14). When the bottom of the hemispherical block (36) contacts the recessed area in the middle of the outer side of the wire clamping plate (12), the wire clamping plate (12) will rotate downward.

9. The yarn diameter online measurement and feedback device according to claim 1, characterized in that, The auxiliary mechanism also includes a vertical plate (18), a base frame (19), a light projection hole (16), a side frame (20), an extrusion piece (26), a bending piece (27), a rotating shaft (34), and a rotating block (35). The base frame (19) is provided at the front and rear ends of the top of the restraint frame (17). A light projection hole (16) is provided in the middle of the top of the base frame (19). A rotating block (35) is provided inside the light projection hole (16). The rotating block (35) and the inner side of the light projection hole (16) are connected. A rotating shaft (34) is provided. A bending piece (27) is provided on one side of the rotating block (35). An extrusion piece (26) is provided on the other side of the rotating block (35). A vertical plate (18) is provided on one side of the extrusion piece (26). A second electrically controlled telescopic rod is provided at the bottom of the restraint frame (17). A protrusion is provided on both sides of the restraint frame (17). A vertical shaft is vertically inserted through the inner side of the protrusion. A fourth spring is sleeved on the outside of the vertical shaft. A side frame (20) is provided on the outside of the entire vertical shaft.

10. The online yarn diameter measurement and feedback device according to claim 9, characterized in that, The protrusions on both sides of the restraint frame (17) form a sliding structure with the vertical axis. The outer side of the extrusion member (26) near the rotating block (35) is provided with a protruding arc-shaped structure. The protruding arc-shaped structure on the outer side of the rotating block (35) near the outer side of the extrusion member (26) will rotate.

Images