Yarn tension adjusting device, method and system and storage medium

Abstract

The invention discloses a yarn tension adjusting device, method and system and a storage medium. The yarn tension adjusting device comprises a yarn feeding assembly, a yarn discharging assembly, a tension sensing assembly and a control assembly which are sequentially arranged in the yarn conveying direction. The yarn feeding assembly comprises a plurality of guide wheels for clamping the yarns; the yarn outlet assembly comprises a first connecting rod and a yarn collecting cylinder which rotate coaxially; the first connecting rod is provided with a yarn threading hole, and the yarn passes through the yarn threading hole, then is wound around the yarn collecting barrel and then is output; the tension sensing assembly is used for sensing the current tension of the yarn output from the yarn output assembly and transmitting the current tension to the control assembly. The control assembly is used for receiving the current tension and controlling at least one of the rotating states of the guide wheels, the rotating direction of the first connecting rod and the rotating direction of the yarn collecting barrel according to the current tension so as to adjust the tension of the yarn. The tension of the conveyed yarn can be adjusted in real time, and the stability of the yarn tension is maintained.

Description

Technical Field

[0001] This application relates to the field of industrial automation control, and in particular to a yarn tension adjustment device, method, system and storage medium. Background Technology

[0002] In the current textile industry, embroidery machines (also known as computerized embroidery machines or electric embroidery machines) are indispensable industrial equipment. Industrial-grade embroidery machines generally employ a multi-head configuration with multiple needle bars to achieve large-scale production. Each needle bar requires individual adjustment of the thread tension via knobs (usually two). Assuming an embroidery machine with 18 heads operating in tandem, each head having 10 needle bars, this would require 360 ​​manual adjustments. Furthermore, tension adjustment relies on experience or necessitates the use of a tension gauge, resulting in low efficiency.

[0003] Furthermore, in existing embroidery machines, the needle bar moves up and down reciprocally during the knitting process, and the rotary hook hooks the top thread to form a loop structure to ensure the interweaving of the top and bottom threads. When the rotary hook pulls the top thread to the bottom, the take-up lever does not descend to its lowest position. After the rotary hook rotates upward, the take-up lever does not immediately tighten the top thread. The rotary hook will run an empty circle before tightening, resulting in a significant lag in the entire process. Summary of the Invention

[0004] To address the aforementioned problems, this application discloses a yarn tension adjustment device, method, system, and storage medium. The yarn tension adjustment device can sense and adjust the tension of the conveyed yarn in real time, achieving stable yarn tension throughout the entire yarn feeding process. Furthermore, based on the hook-up process, it replaces the take-up lever action, actively pulling back and tightening the yarn surface through the yarn output assembly, allowing the hook to prepare for the next stitch without empty running, thus improving quality and equipment efficiency.

[0005] This application provides a yarn tension adjusting device, comprising a yarn feeding assembly, a yarn output assembly, and a tension sensing assembly arranged sequentially along the yarn feeding direction, and a control assembly communicatively connected to the yarn feeding assembly, the yarn output assembly, and the tension sensing assembly; the yarn feeding assembly includes a plurality of guide rollers clamping the yarn; the yarn output assembly includes a first connecting rod and a yarn collecting cylinder coaxially rotating; the first connecting rod has a yarn threading hole, and the yarn passes through the yarn threading hole and is output after winding around the yarn collecting cylinder; the tension sensing assembly is used to sense the current tension of the yarn output from the yarn output assembly and transmit it to the control assembly; the control assembly is used to receive the current tension and control at least one of the rotation state of the plurality of guide rollers, the rotation direction of the first connecting rod, and the rotation direction of the yarn collecting cylinder according to the current tension, so as to adjust the tension of the yarn.

[0006] According to some embodiments of this application, the rotation states of the plurality of guide wheels include passive rotation, controlled stop rotation, and active rotation; when the current tension matches the set tension, the plurality of guide wheels passively rotate following the delivery of the yarn; when the tension is less than the set tension, the control component controls the plurality of guide wheels to stop rotating to clamp the yarn; when the tension is greater than the set tension, the control component controls the plurality of guide wheels to actively rotate to increase the delivery amount of the yarn.

[0007] According to some embodiments of this application, the control component is used to control the plurality of guide wheels to stop rotating to clamp the yarn after receiving a signal indicating that the yarn is not being pulled by the rotary hook.

[0008] According to some embodiments of this application, one end of the first connecting rod is rotatably mounted on the central axis of the yarn collecting cylinder, and can be controlled to rotate to drive the yarn collecting cylinder to spin around the central axis; the minimum radius of the cross section of the yarn collecting cylinder is greater than the rotation radius of the rotary shuttle; the other end of the first connecting rod is provided with the yarn threading hole; when the current tension matches the set tension, the first connecting rod does not rotate, and the yarn collecting cylinder passively rotates along the yarn feeding rotation direction based on the yarn feeding; when the tension is less than the set tension, the control component is used to control the first connecting rod to rotate in the opposite direction along the yarn feeding rotation direction, thereby tightening the yarn through the yarn threading hole and driving the yarn collecting cylinder to rotate in the opposite direction along the yarn feeding rotation direction to tighten the yarn.

[0009] According to some embodiments of this application, after the rotary hook catches the yarn to the bottom, the rotary hook no longer catches the yarn. The control component is used to control the first connecting rod to rotate in the opposite direction of the yarn feeding rotation after receiving a signal that the yarn is not being caught by the rotary hook. The yarn is tightened by the yarn threading hole and the yarn collecting cylinder is driven to rotate in the opposite direction of the yarn feeding rotation to tighten the yarn. By utilizing the circumferential difference between the yarn output component and the radius of the rotary hook (the radius of the yarn output component is greater than the radius of the rotary hook), the yarn is tightened before the rotary hook returns to the top, and the rotary hook can be prepared for the next thread hooking process without waiting for the rotary hook to run a full circle before hooking the yarn, so that the thread take-up lever is synchronized with the embroidery action.

[0010] According to some embodiments of this application, the outer surface of the yarn collecting cylinder has a threaded structure.

[0011] According to some embodiments of this application, the yarn collecting cylinder has a winding area and a non-winding area, the non-winding area is fixedly connected to both sides of the non-winding area, the radius of the non-winding area is larger than the maximum radius of the winding area, and the surface of the winding area along the central axis of the yarn collecting cylinder has an inclined angle.

[0012] According to some embodiments of this application, the longitudinal section of the yarn collecting cylinder is a drum-shaped structure, with the two ends of the drum-shaped structure being trapezoidal structures with the same size lower base, and the middle part being a trapezoidal structure with the trapezoidal structures on both sides as the upper and lower bases.

[0013] According to some embodiments of this application, the yarn tension adjusting device further includes a yarn buffer component disposed between the yarn feeding component and the yarn exiting component; the yarn buffer component provides a zigzag conveying path so that the yarn passes along the zigzag conveying path.

[0014] According to some embodiments of this application, the yarn buffer assembly includes two side rods rotatably connected end to end, each side rod having a plurality of yarn passage holes, and the zigzag conveying path is specified as a path that alternately passes through the yarn passage holes on the two side rods.

[0015] According to some embodiments of this application, when the tension is greater than the set tension, the yarn pulls the yarn through the hole to make the included angle between the two side rods smaller and bring them closer together, so as to shorten the zigzag conveying path for releasing the yarn.

[0016] According to some embodiments of this application, the yarn buffer assembly includes a fixedly disposed guide point and a second connecting rod; the first end of the second connecting rod is fixedly and rotatably mounted, and the second end has a yarn passage hole; the zigzag conveying path is specified as a path that bypasses the guide point, passes through the yarn passage hole, and then zigs back.

[0017] According to some embodiments of this application, when the tension is greater than the set tension, the yarn pulls the yarn through the hole to cause the second connecting rod to rotate toward the guide point, thereby shortening the zigzag conveying path to release the yarn.

[0018] According to some embodiments of this application, the yarn tension adjusting device further includes a yarn guiding assembly, which includes a yarn guiding nozzle, from which the yarn is output to the needle bar.

[0019] A second aspect of this application provides a yarn tension adjustment method, which can be applied to the yarn tension adjustment device described above. The yarn tension adjustment method may include: acquiring the current tension of the yarn and determining whether the current tension deviates from a set tension; and controlling at least one of the rotation states of the plurality of guide wheels, the rotation direction of the first connecting rod, and the rotation direction of the yarn collecting cylinder based on the determination result, to adjust the yarn tension.

[0020] A third aspect of this application provides a yarn tension adjustment system, the yarn tension adjustment system comprising: an acquisition module configured to acquire the current tension of the yarn and determine whether the current tension deviates from a set tension; and a control module configured to control at least one of the rotation state of the plurality of guide wheels, the rotation direction of the first connecting rod, and the rotation direction of the yarn collecting cylinder based on the determination result, so as to adjust the tension of the yarn.

[0021] A fourth aspect of this application provides a processing system that may include a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, can implement the steps of the yarn tension adjustment method as described above.

[0022] The fifth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the yarn tension adjustment method as described above.

[0023] The sixth aspect of this application provides a computer program product comprising a computer program that, when executed by a processor, implements the steps of the yarn tension adjustment method as described above.

[0024] The yarn tension adjustment device disclosed in this application can capture the real-time tension of the yarn during the conveying process based on the tension sensing component and determine whether it deviates from the set tension value. Based on the determination result, the operating state of each component is adjusted to adjust the tension of the yarn in real time so as to maintain the tension stability of the conveyed yarn.

[0025] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0026] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the drawings are used to denote similar components, wherein: Figure 1 These are exemplary configuration diagrams of a yarn tension adjusting device according to some embodiments of this application; Figure 2 This is an exemplary schematic diagram of a yarn collecting cylinder according to some embodiments of this application; Figure 3 This is another exemplary schematic diagram of a yarn collecting cylinder according to some embodiments of this application; Figure 4This is another exemplary configuration diagram of a yarn tension adjusting device shown in some embodiments of this application; Figure 5 These are exemplary schematic diagrams of a yarn buffer component according to some embodiments of this application; Figure 6 This is another exemplary schematic diagram of a yarn tension adjusting device according to some embodiments of this application; Figure 7 These are exemplary schematic diagrams of a yarn buffer component according to some embodiments of this application; Figure 8 This is an exemplary flowchart of a yarn tension adjustment method according to some embodiments of this application; Figure 9 This is an exemplary block diagram of a processing system for implementing a yarn tension adjustment method according to some embodiments of this application; Figure 10 This is an exemplary schematic diagram of a computing device according to some embodiments of this application. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this application and in its specification is for the purpose of describing particular embodiments only and is not intended to limit the application. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships, which may change accordingly when the absolute position of the described object changes. The terms "and / or" or "and / or" as used in this application include any and all combinations of one or more of the associated listed items.

[0029] As mentioned in the background section, existing embroidery machines require manual adjustment of the thread tension, which is time-consuming, labor-intensive, and inefficient. Furthermore, during the knitting process, when the rotary hook pulls the thread to its lowest point, the corresponding needle bar's upper shaft only rotates 90°, and the take-up lever does not descend to its lowest position. Instead, it needs to rotate another 45° to reach the bottom, resulting in the take-up lever pulling down an unnecessary portion of the thread. Additionally, after the rotary hook rotates upwards, the take-up lever does not immediately tighten the thread; the rotary hook runs an empty circle before tightening, indicating a significant lag in the entire process.

[0030] Therefore, manual adjustment combined with insufficient synchronization between the take-up lever and the knitting motion will cause significant changes in the yarn (i.e., the surface yarn) during rapid knitting, affecting fabric quality and making it difficult to control the amount of yarn used. If the embroidery machine is linked with dyeing or printing equipment, it will lead to inaccurate dyeing positions and poor appearance quality.

[0031] The following description, with reference to the accompanying drawings, illustrates some preferred embodiments of the present application. It should be noted that the following description is for illustrative purposes only and is not intended to limit the scope of protection of the present application. The flowcharts used are for illustrating the operations performed by the system according to embodiments of the present application. It should be understood that the described operations are not necessarily performed precisely in sequence. Instead, various steps may be processed in reverse order or simultaneously. Furthermore, other operations may be added to these processes, or one or more steps may be removed from these processes.

[0032] Figure 1 This is an exemplary configuration diagram of a yarn tension adjustment device according to some embodiments of this application. Figure 1 As shown, the yarn tension adjustment device may include a yarn feeding assembly 100, a yarn output assembly 200 and a tension sensing assembly 300 arranged sequentially along the conveying direction of the yarn L.

[0033] The yarn feeding assembly 100 may include multiple guide rollers that clamp the yarn. In some embodiments, the multiple guide rollers may be a triangular guide roller group, with the three guide rollers arranged in a circle of equal diameter tangent to each other (i.e., the centers of the guide rollers form an equilateral triangle). The tangent rims of the guide rollers can form a symmetrical three-point constraint on the yarn L passing through the middle. The stability of the triangle can be used to ensure that the relative positions of the guide rollers are fixed, and the constraint on the intermediate medium, i.e., the yarn L, is uniform and interference-resistant, maintaining the stability of yarn feeding. At the same time, triangular stability can reduce the use of additional positioning / installation structures, thereby reducing costs. When used for feeding yarn L, it can eliminate the twisting of yarn L, and to a certain extent ensure the uniform tension of the yarn during knitting. During the feeding process of yarn L, since the front end (e.g., the needle of an embroidery machine) is constantly consuming yarn, the multiple guide rollers will be passively rotated under the action of friction between them and the yarn L, maintaining stable yarn feeding. At the same time, by counting the number of rotations of the guide rollers, the feeding length of the yarn L, i.e., the amount of yarn used, can be estimated by combining the circumference of the guide rollers.

[0034] Of course, the number of guide rollers included in the yarn feeding assembly 100 is not fixed, and the example of three guide rollers mentioned above is not limiting. The yarn feeding assembly 100 may also include more guide rollers, such as four, five, six or even more, and this application does not limit this.

[0035] In some embodiments, the guide rollers included in the yarn feeding assembly 100 can be rotated in a controlled manner. For example, each guide roller has a corresponding actuator, such as a rotary motor, the rotation shaft of which can be connected to the guide roller. Thus, the rotation of the guide roller can be controlled by controlling the rotation of the rotary motor, and the rotation shaft can be locked to stop the guide roller from rotating. Assuming that the passive rotation of the guide roller as the yarn L is fed is called forward rotation, the guide roller can be controlled to accelerate forward rotation or stop rotation to adjust the amount of yarn L fed, thereby regulating the tension of the yarn L. For example, forward rotation can increase the amount of yarn fed, thereby reducing tension, while stopping rotation can pause the yarn feeding, tightening the yarn and increasing tension.

[0036] The yarn feeding assembly 200 may include a first connecting rod 210 and a yarn collecting cylinder 220 that rotate coaxially. In some embodiments, the yarn collecting cylinder 220 may be a self-spinning cylinder capable of rotating around its own central axis. The first connecting rod 210 may be mounted on the central axis of the yarn collecting cylinder 220. One implementation may be that mounting holes or mounting positions are provided on both end faces of the yarn collecting cylinder 220 at positions along its central axis for mounting rolling bearings. The outer ring of the rolling bearing is fixedly connected to the yarn collecting cylinder 220, the inner ring of the rolling bearing on one end face is fixedly connected to the mounting base (or mounting carrier) of the yarn collecting cylinder 220, and the inner ring of the rolling bearing on the other end face is fixedly connected to one end of the first connecting rod 210. Thus, the first connecting rod 210 and the yarn collecting cylinder 220 can achieve coaxial rotation (around the central axis of the yarn collecting cylinder 220). Let the end of the first connecting rod 210 connected to the yarn collecting cylinder 220 be the end point; then the other end of the first connecting rod 210, i.e., the beginning point, may have a yarn threading hole. The yarn L from the yarn feeding assembly 100 will first pass through the yarn threading hole and then wrap around the yarn collecting cylinder 220 one or more times before being output.

[0037] In some embodiments, the first link 210 has a corresponding drive mechanism, such as a rotary motor or a stepper motor. One installation method is to place it inside the yarn collecting cylinder 220. For example, a cavity is opened inside the yarn collecting cylinder 220 to accommodate the motor. The rotating shaft of the motor is connected to the inner ring of the rolling bearing, driving the inner ring to rotate, thereby driving the first link 210 to rotate. Another installation method is to place it outside the entire yarn tension adjustment device. For example, the rotating shaft of the motor is connected to the inner ring of the bearing through a force transmission structure such as a flexible shaft, rigid shaft, gear rod, transmission rod, lead screw, guide yarn, pneumatic component, hydraulic component, etc., or any combination thereof, thereby transmitting rotational force to the first link 210 to drive it to rotate through the force transmission structure. Of course, other suitable installation methods can also be applied to this application without limitation.

[0038] As yarn L is wound on the yarn collecting cylinder 220 and then output, and as yarn L is continuously consumed at the front end, the yarn collecting cylinder 220 will passively rotate along with the delivery of yarn L. For example, as... Figure 1 As the yarn L is consumed, the yarn collecting cylinder 220 shown rotates clockwise. This direction of rotation can also be referred to as the yarn feeding rotation direction in this application. Simultaneously, since the yarn L passes through the threading hole on the first connecting rod 210, when the first connecting rod 210 is controlled to rotate in the opposite direction of the rotation of the yarn collecting cylinder 220 (e.g., counterclockwise), it will cause the yarn L to pull the yarn collecting cylinder 220, thereby changing the rotation direction of the yarn collecting cylinder 220 so that it rotates synchronously with the first connecting rod 210. That is, the yarn collecting cylinder 220 will rotate in the opposite direction of the yarn feeding rotation direction (e.g., changing from clockwise rotation to counterclockwise rotation), to tighten the yarn L and thus change the tension of the yarn L.

[0039] In some embodiments, the outer surface of the yarn collecting cylinder 220 may have a threaded structure. (See reference) Figure 2 The exemplary schematic diagram of the yarn collecting cylinder shown illustrates that the threaded structure guides the yarn L wound on the yarn collecting cylinder 220, for example, the yarn L is wound along the grooves on the outer surface of the yarn collecting cylinder 220. This staggers the loops, preventing loop overlap from causing the later-entering yarn to press against the yarn that needs to be output, thus preventing yarn breakage.

[0040] In some embodiments, the yarn collecting cylinder 220 has a winding area and a non-winding area. The non-winding area is fixedly connected to both sides of the non-winding area. The radius of the non-winding area is larger than the maximum radius of the winding area. The surface of the winding area along the central axis of the yarn collecting cylinder has an inclination angle. The larger radius of the non-winding area ensures that the area where the yarn L enters the yarn collecting cylinder 220 is confined within the winding area. Furthermore, the inclination angle within the winding area prevents the yarn from becoming entangled or twisted, allowing the yarn to be smoothly output from the other end.

[0041] In some embodiments, the longitudinal section of the yarn collecting cylinder 220 may be a drum-shaped structure. (See reference...) Figure 3 Another exemplary schematic diagram of the yarn collecting cylinder is shown, which presents a longitudinal section of the yarn collecting cylinder 220. (See diagram below.) Figure 3 As shown, the winding area of ​​the yarn collecting cylinder 220 can be a yarn cylinder, a frustum, a solid cylinder, or a cylindrical skeleton. As long as the winding area as a whole forms a combination of large and small inclination angles (different inclination angles on the left and right sides) to guide the yarn L, the yarn will be automatically guided to one end according to the different inclination angles. This can reduce the contact area with the yarn L, reduce the friction between the yarn L and the yarn collecting cylinder 220, maintain stable tension, avoid yarn tangling during yarn storage, and reduce the risk of yarn breakage, thereby allowing the yarn L to be output more smoothly.

[0042] The tension sensing component 300 can be used to sense the current tension of the yarn L output from the yarn output component 200 and transmit it to the control component. Figure 1 (Not shown in the image). In some embodiments, the tension sensing component 300 may be a sensor that measures the tension of the yarn L by direct physical contact with the yarn L, such as a strain gauge tension sensor, a piezoresistive ceramic tension sensor, a magnetoelastic tension sensor, or other suitable tension sensors. Figure 1 As shown, the tension sensing component 300 can move left and right as indicated by the double arrows, for example, by moving left to support the yarn L to measure the current tension of the yarn L. In some embodiments, the tension sensing component 300 may also be presented in other forms. For example, the tension sensing component 300 may be a three-pulley tension sensor, with the yarn L alternately passing through three pulleys before being transmitted. The tension of the yarn is determined by the force generated by the contact between the yarn L and the pulleys.

[0043] The current tension of the yarn L acquired by the tension sensing component 300 can be transmitted via a wireless / wired connection with the control component. Any suitable connection method, such as fieldbus, Bluetooth™, serial communication, etc., can be used in this application.

[0044] The control components can be electrically (communicationally) connected to the yarn feeding assembly 100, the yarn output assembly 200, and the tension sensing assembly 300. This electrical (communication) connection can be achieved through, but is not limited to, fieldbus (e.g., PROFIBUS, MODBUS, DeviceNet, CANopen, etc.), Ethernet (e.g., EtherNet / IP, PROFINET, EtherCAT, Modbus TCP, etc.), wireless communication (e.g., Wi-Fi™, Bluetooth™, ZigBee™, LoRa™, etc.), serial communication (e.g., RS-232, RS-485, etc.), parallel communication, fiber optic communication, OPC (OLE for Process Control), Internet of Things (IIoT) protocols (e.g., MQTT, AMQP, CoAP, etc.), Time-Sensitive Networking (TSN), 5G networks, or any combination thereof.

[0045] In some embodiments, the control module can be used to receive the current tension of the yarn L, and control at least one of the rotation state of the plurality of guide wheels included in the yarn feeding assembly 100, the rotation direction of the first connecting rod 210 included in the yarn output assembly 200, and the rotation direction of the yarn collecting cylinder 220 according to the current tension, so as to adjust the tension of the yarn L and keep the tension of the yarn L stable.

[0046] It is understandable that a stable tension in the conveyed yarn L (e.g., within a set tension range or within the error range of the set tension) ensures a uniform fabric structure and improves appearance quality. With stable tension, the loop spacing and loop height of the fabric are consistent, and the fabric surface is smooth. For patterned fabrics such as jacquard and striped fabrics, stable tension ensures a clear pattern outline and symmetrical design, avoiding pattern shifts or deformations caused by localized tension fluctuations. Simultaneously, stable tension reduces yarn breakage and improves production efficiency. Excessive tension may cause the yarn to break, leading to machine stoppages, interrupting the production process, and reducing equipment uptime. Insufficient tension can cause the yarn to loosen and tangle, forming "yarn loops," and even entangle the knitting needles, leading to needle breakage and increasing equipment maintenance costs and downtime. Furthermore, the physical properties of yarn are sensitive to tension: excessive tension can lead to "plastic deformation," causing the fabric to "sag and shrink" later (e.g., unstable dimensions after washing), or a decrease in strength (especially for natural fibers such as cotton and wool, where excessive stretching can damage the molecular structure); insufficient tension results in loose loops, making the fabric prone to "unraveling" (especially low-twist yarns), and reducing abrasion resistance and pilling resistance. Stable tension allows the yarn to loop within a reasonable stress range, preserving its original physical properties and ensuring the fabric's durability and dimensional stability. Additionally, components of the embroidery machine that come into direct contact with the yarn will experience increased wear and reduced lifespan due to yarn tension fluctuations. In large-scale industrial production, it is required that the quality of fabrics from the same batch or different batches remain consistent. Therefore, maintaining stable yarn tension is necessary during production to facilitate large-scale production and improve product qualification rates. The yarn tension adjustment device disclosed in this application can control the relevant components of the yarn conveying system based on the real-time acquired current yarn tension, thereby adjusting the yarn tension to maintain stability.

[0047] For example, after receiving the current tension of yarn L from the tension sensing component 300, the control component can compare it with a set tension. The set tension can be a preset value, for example, determined based on production experience or process requirements. When the current tension matches the set tension, for example, when the current tension is equal to the set tension or the current tension is within the error range of the set tension, the control component can control the yarn feeding component 100 and the yarn output component 200 to feed normally. This normal feeding may include, as described above, the multiple guide rollers of the yarn feeding component 100 passively rotating as the yarn L is fed, the first connecting rod 210 of the yarn output component 200 not rotating, and the yarn collecting cylinder 200 passively rotating along the yarn feeding rotation direction under the influence of the yarn L. When the current tension is less than the set tension or less than the minimum value of the error range of the set tension, the control component will determine that the current tension of yarn L is too low. This indicates that yarn L is relatively loose and the yarn feeding amount needs to be reduced to restore the yarn L to its proper tension. In this configuration, the control component can stop the rotation of multiple guide rollers in the yarn feeding assembly 100 to clamp the yarn L. As the yarn at the front end is consumed, the yarn in the yarn tension adjustment device will become taut due to lack of replenishment, thereby increasing the tension. Simultaneously, the control component can also control the first connecting rod 210 of the yarn output assembly 200 to rotate in the opposite direction of the yarn feeding rotation, thereby tightening the yarn L through the yarn threading hole at its head, and further driving the yarn L to pull the yarn collecting cylinder 220 to rotate in the opposite direction of the yarn feeding rotation, thus tightening the yarn and increasing the tension.

[0048] When the current tension is greater than the set tension or the maximum value of the error range of the set tension, the control component determines that the current tension of yarn L is too high. This indicates that the current yarn L is too tight and the yarn feed needs to be increased to restore the yarn L to its proper tension. In this case, the control component can control multiple guide rollers of the yarn feeding assembly 100 to actively rotate to increase the yarn L feed rate, thereby reducing the tension of yarn L.

[0049] Regarding the aforementioned technical problem in existing knitting processes where the shuttle runs one full circle before tightening the yarn (i.e., yarn L), the control component can also control the operation of the yarn feeding component 100 and / or the yarn exit component 200 to tighten the yarn in advance, thereby improving the synchronization rate between the components during knitting. For example, the control component can also receive a signal indicating that yarn L is not being pulled by the shuttle. This signal can be generated based on the rotation of the shuttle. For instance, by monitoring the rotation angle of the shuttle using an angle sensor, such as after the shuttle has rotated 225°, this signal can be generated by the angle sensor and transmitted to the control component. The connection between the two can also adopt the various exemplary connection methods described above. In this case, yarn L needs to be tightened, which is equivalent to increasing the tension of yarn L. The control component can control the multiple guide wheels of the yarn feeding assembly 100 to stop rotating to clamp the yarn L, and / or control the first connecting rod 210 of the yarn output assembly 200 to rotate in the opposite direction of the yarn feeding rotation, thereby tightening the yarn L by means of the yarn threading hole at its head end, and further driving the yarn L to pull the yarn collecting cylinder 220 to rotate in the opposite direction of the yarn feeding rotation to tighten the yarn L. For the reverse rotation of the first connecting rod 210 / yarn collecting cylinder 220, the rotation radius / radius of the first connecting rod 210 / yarn collecting cylinder 220 can be set to be greater than the radius of the rotary hook, using the circumferential difference to tighten the yarn before the rotary hook returns to the top.

[0050] In some embodiments, to implement the above process, the control component can be implemented using a computing module / component, such as a main control chip (e.g., ARM, DSC, DSP, etc.), a programmable logic controller (PLC), a programmable logic device (PLD), a microcontroller (MCU), etc. Alternatively, the control component can be implemented on an industrial computer, such as a Linux-based computer. In this application, any component capable of data calculation and signal reception / generation / transmission can be used as the aforementioned control module. In some embodiments, the control component can also be distributed across various components of the yarn feeding assembly 100 and the yarn output assembly 200. For example, the control module of the rotary motor corresponding to each guide wheel of the yarn feeding assembly 100, or the control module of the rotary motor / stepper motor of the first link 210.

[0051] In some embodiments, the yarn tension adjusting device may also include other components. For example, mounting carriers necessary for the yarn feeding assembly 100, the yarn exit assembly 200, and the tension sensing assembly 300, and / or connectors between these components; a guide rod, such as a guide rod 400, for adjusting the conveying direction of the yarn L; and a guide nozzle 500 for the final output of the yarn L. After being output from the guide nozzle 500, the yarn L will be fed into the needle of an embroidery machine.

[0052] The yarn tension adjustment device disclosed in this application can sense and automatically adjust the yarn tension in real time during the yarn feeding / knitting process, achieving yarn tension stability throughout the entire process, thereby improving knitting quality and production efficiency. Furthermore, the yarn tension adjustment device disclosed in this application can prevent the shuttle from running idle, improving knitting efficiency.

[0053] Figure 4 This is another exemplary configuration diagram of a yarn tension adjusting device shown in some embodiments of this application. Compared to Figure 1 , Figure 4 The yarn tension adjustment device shown may further include a yarn buffer assembly 600 disposed between the yarn feeding assembly 100 and the yarn exit assembly 200.

[0054] The yarn buffer assembly 600 provides a zigzag conveying path. Yarn L passes through the yarn buffer assembly 600 along this zigzag conveying path. This zigzag conveying path refers to the path the yarn travels within the yarn buffer assembly 600, existing as a zigzag. Unlike the curved conveying path of yarn between multiple guide rollers in the yarn feeding assembly 100, and the circular conveying path on the yarn collecting bobbin 220, the zigzag conveying path provided by the yarn buffer assembly 600 can accommodate yarns of greater length, thus achieving a yarn "buffering" function.

[0055] Figure 5 An exemplary structural diagram of the yarn buffer component 600 is shown, such as Figure 5 As shown, the yarn buffer assembly 600 may include two side rods 610 rotatably connected end-to-end. The two side rods 610 are rotatably connected via a hinged joint, and the included angle formed can be varied by the side rods 610 moving closer or further apart. Each side rod 610 may be provided with multiple yarn passage holes 620. (The text repeats itself here.) Figure 7 Each side rod 610 shown has three yarn guide holes 620. The path that alternately passes through the yarn guide holes 620 on two side rods 610 will be designated as the aforementioned zigzag conveying path, such as... Figure 5 The serpentine path shown is as follows. Yarn L will first pass through the first yarn pass hole of the right side rod, then through the first yarn pass hole of the left side rod, and then through the second yarn pass hole of the right side rod, repeating this alternation until it is output from the last yarn pass hole.

[0056] In some embodiments, the yarn buffer assembly 600 is used for tension adjustment when the tension of the yarn L deviates from the set tension. For example, when the current tension of the yarn L is greater than the set tension or greater than the maximum value of the error range of the set tension, i.e., when the tension is too high, the yarn L delivered by the entire yarn tension adjusting device is in a taut state. At this time, the yarn L will be pulled through the yarn hole 620, causing the two side rods to be brought closer together under force. After the angle between the side rods decreases, the zigzag conveying path provided by the yarn buffer assembly 600 will be shortened, the length of the yarn L contained therein will be shortened, and more yarn L will be released, thereby reducing the tension of the yarn L.

[0057] Figure 6 Another exemplary structural diagram of the yarn buffer component 600 is shown, such as... Figure 6 As shown, the yarn buffer assembly 600 includes a fixedly mounted guide point 710 and a second link 720. The first end 721 of the second link 720 is rotatably fixed, and the second end 722 has a yarn passage hole. The path that bypasses the guide point 710, passes through the yarn passage hole on the second end 722, and then travels in the opposite direction will be designated as the aforementioned zigzag conveying path, such as... Figure 6 The yarn L is shown in the "Z" shape. After being output from the yarn feeding assembly 100, the yarn first travels to the guide point 710, bends, passes through the yarn passage hole on the second end 722, and then is output in the opposite direction to the next assembly, such as the yarn output assembly 200.

[0058] Similarly, Figure 6 The yarn buffer assembly 600 shown can also be used for tension adjustment when the tension of the yarn L deviates from the set tension. For example, when the current tension of the yarn L is greater than the set tension or greater than the maximum value of the error range of the set tension, i.e., when the tension is too high, the yarn L delivered by the entire yarn tension adjusting device is in a taut state. At this time, the yarn L will pull on the yarn passage hole on the second end 722, causing the second connecting rod 710 to rotate toward the guide point 710. As a result, the zigzag conveying path provided by the yarn buffer assembly 600 will be shortened, the length of the yarn L contained therein will be shortened, and more yarn L will be released, thereby reducing the tension of the yarn L.

[0059] In some embodiments, the yarn feeding assembly 100 and the yarn buffer assembly 600 included in the yarn tension adjusting device can be used in conjunction with or shared with other devices. For example, the yarn L may be dyed and then transported from a dyeing or printing device. In this case, the dyeing or printing device can provide the yarn feeding assembly 100 and the yarn buffer assembly 600 to combine with the yarn output assembly 200 and the tension sensing assembly 300 to form the yarn tension adjusting device.

[0060] This application also provides a method for adjusting yarn tension, which can be applied to the control component of the aforementioned yarn tension adjusting device. (Reference) Figure 8 An exemplary flowchart of a yarn tension adjustment method according to some embodiments of this application is shown, which may include the following operations.

[0061] Step S1: Obtain the current tension of the yarn and determine whether the current tension deviates from the set tension.

[0062] In some embodiments, the current tension of the yarn can be obtained using the tension sensing component 300. The control component can communicate with the tension sensing component 300 to obtain the current tension.

[0063] In some embodiments, the control component can determine whether the current tension deviates from the set tension by comparing the current tension with the set tension. The set tension may be an empirical value determined based on production experience or process requirements, and may be pre-input to the control component. The determination result may include the current tension matching the set tension (e.g., the current tension equal to the set tension or the current tension within the error range of the set tension), the current tension being less than the set tension or less than the minimum value of the error range of the set tension, and the current tension being greater than the set tension or greater than the maximum value of the error range of the set tension, which may respectively indicate that the current tension is normal, the current tension is too low, and the current tension is too high.

[0064] Step S2: Based on the determined result, control at least one of the rotation state of the plurality of guide wheels, the rotation direction of the first connecting rod, and the rotation direction of the yarn collecting cylinder to adjust the tension of the yarn.

[0065] When the current tension matches the set tension, the control component can control the yarn feeding assembly 100 and the yarn output assembly 200 to feed normally. This normal feeding may include, as previously described, the multiple guide rollers of the yarn feeding assembly 100 passively rotating as the yarn is fed, the first connecting rod 210 of the yarn output assembly 200 not rotating, and the yarn collecting cylinder 200 passively rotating along the yarn feeding direction under the influence of the yarn. When the current tension is too low, it indicates that the yarn is loose, and the yarn feed amount needs to be reduced to restore the yarn to its proper tension. The control component can control the multiple guide rollers of the yarn feeding assembly 100 to stop rotating to clamp the yarn. As the yarn at the front end is consumed, the yarn in the yarn tension adjustment device will become taut due to lack of replenishment, thereby increasing the tension. Meanwhile, the control component can also control the first connecting rod 210 of the yarn feeding component 200 to rotate in the opposite direction along the yarn feeding rotation direction, thereby tightening the yarn by means of the yarn threading hole at its head end, and further driving the yarn to pull the yarn collecting cylinder 220 to rotate in the opposite direction along the yarn feeding rotation direction, thereby tightening the yarn and increasing the tension.

[0066] When the current tension is too high, it indicates that the yarn is too tight, and the yarn feed rate needs to be increased to restore the yarn to its proper tension. The control component can control multiple guide rollers of the yarn feeding assembly 100 to actively rotate to increase the yarn feed rate, thereby reducing the yarn tension.

[0067] In some embodiments, the control component can also control the operation of the yarn feeding component 100 and / or the yarn output component 200 according to the rotation of the rotary hook, so as to tighten the yarn in advance and improve the synchronization rate between the components during the knitting process.

[0068] For example, upon receiving a signal indicating that the yarn is not being pulled by the shuttle hook, the control component can control the multiple guide wheels of the yarn feeding component 100 to stop rotating to clamp the yarn, and / or control the first connecting rod 210 of the yarn output component 200 to rotate in the opposite direction of the yarn feeding rotation, thereby tightening the yarn through the yarn-passing hole at its head end, and further driving the yarn to pull the yarn collecting cylinder 220 to rotate in the opposite direction of the yarn feeding rotation to tighten the yarn. For the reverse rotation of the first connecting rod 210 / yarn collecting cylinder 220, the rotation radius / radius of the first connecting rod 210 / yarn collecting cylinder 220 can be set to be greater than the radius of the shuttle, using the circumferential difference to tighten the yarn before the shuttle hook returns to the top.

[0069] The yarn tension adjustment method disclosed in this application can control the components of the yarn tension adjustment device based on the real-time acquired current yarn tension to automatically adjust the yarn tension and achieve yarn tension stability throughout the process.

[0070] This application also discloses a processing system for implementing the above-described yarn tension adjustment method. (Reference) Figure 9 The diagram shows an exemplary block diagram of a processing system implementing the yarn tension adjustment method described above, according to some embodiments of this application. This processing system can serve as the control component described above, participating in the construction of the aforementioned yarn tension adjustment device. Figure 9 As shown, the processing system 900 may include an acquisition module 910 and a control module 920.

[0071] The acquisition module 910 can be configured to acquire the current tension of the yarn and determine whether the current tension deviates from a set tension. The acquisition module 910 can communicate with the tension sensing component 300 to acquire the current tension and compare the current tension with a preset set tension to determine whether the current tension deviates from the set tension.

[0072] The control module 920 can be configured to control at least one of the rotation states of the plurality of guide wheels, the rotation direction of the first connecting rod, and the rotation direction of the yarn collecting cylinder based on a determination result, so as to adjust the tension of the yarn. The control module 920 can determine whether the current tension is normal, too low, or too high based on the determination result, and control the forward rotation or stop rotation of the plurality of guide wheels included in the yarn feeding assembly 100 according to the above results, and / or control the first connecting rod 210 of the yarn output assembly 200 to rotate in the opposite direction along the yarn feeding rotation direction to drive the yarn collecting cylinder 220 to rotate in the opposite direction, etc.

[0073] Further descriptions of the aforementioned components can be found in this application. Figures 1-7 part.

[0074] It should be understood that Figure 9 The systems and modules shown can be implemented in various ways. For example, in some embodiments, the systems and modules can be implemented by hardware, software, or a combination of both. The hardware portion can be implemented using dedicated logic; the software portion can be stored in memory and executed by an appropriate instruction execution system, such as a microprocessor or dedicated-design hardware. Those skilled in the art will understand that the methods and systems described above can be implemented using computer-executable instructions and / or included in processor control code, for example, on a carrier medium such as a disk, CD, or DVD-ROM, a programmable memory such as read-only memory (firmware), or a data carrier such as an optical or electronic signal carrier. The systems and modules of this application can be implemented not only by hardware circuits such as very large-scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, or programmable hardware devices such as field-programmable gate arrays, programmable logic devices, etc., but also by software executed by various types of processors, or by a combination of the aforementioned hardware circuits and software (e.g., firmware).

[0075] It should be noted that the above description of the modules is for ease of description only and should not be construed as limiting this application to the scope of the embodiments described. It is understood that those skilled in the art, after understanding the principle of the system, may arbitrarily combine the modules or construct subsystems connected to other modules without departing from this principle. For example, the modules may share a single storage module, or each module may have its own separate storage module. Such modifications are all within the scope of protection of this application.

[0076] Figure 10This is a block diagram illustrating an exemplary processing device according to some embodiments of this application. The computing device 1000 may include any component used to implement the system described in the embodiments of this application, such as the aforementioned control component. The computing device 1000 may be implemented using hardware, software programs, firmware, or a combination thereof. For convenience, only one processing device is shown in the figure; however, the computing functions related to the control component described in the embodiments of this application may be implemented in a distributed manner by a set of similar platforms to distribute the system's processing load.

[0077] In some embodiments, computing device 1000 may include processor 1010, memory 1020, input / output 1030, and communication port 1040. In some embodiments, the processor (e.g., CPU) 1010 may execute program instructions as one or more processors. In some embodiments, the memory 1020 may include different forms of program memory and data memory, such as hard disk, read-only memory (ROM), random access memory (RAM), etc., for storing various data files processed and / or transmitted by the computer. In some embodiments, the input / output 1030 may be used to support input / output between computing device 1000 and other components. In some embodiments, the communication port 1040 may be connected to a network for data communication. Exemplary processing devices may include program instructions executed by processor 1010 stored in read-only memory (ROM), random access memory (RAM), and / or other types of non-transitory storage media. The methods and / or processes of the embodiments of this application may be implemented as program instructions. Computing device 1000 may also receive programs and data disclosed in this application via network communication.

[0078] For ease of understanding, Figure 10 Only one processor is illustrated in the illustration. However, it should be noted that the computing device 1000 in this embodiment may include multiple processors. Therefore, the operations and / or methods implemented by one processor as described in this embodiment may also be implemented jointly or independently by multiple processors. For example, if, in this application, the processor of computing device 1000 executes operations A and B, it should be understood that operations A and B may also be executed jointly or independently by two different processors of computing device 1000 (e.g., the first processor executes operation A, the second processor executes operation B, or the first and second processors jointly execute operations A and B).

[0079] This application has described the basic concepts. Obviously, for those skilled in the art, the above detailed disclosure is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore such modifications, improvements, and corrections still fall within the spirit and scope of the exemplary embodiments of this application.

[0080] Furthermore, this application uses specific terms to describe its embodiments. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this application do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application can be appropriately combined.

[0081] Furthermore, those skilled in the art will understand that aspects of this application can be described and illustrated through several patentable types or situations, including any new and useful combination of processes, machines, products, or substances, or any new and useful improvements thereof. Accordingly, aspects of this application can be implemented entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. All of the above hardware or software may be referred to as a “data block,” “module,” “engine,” “unit,” “component,” or “system.” Furthermore, aspects of this application may manifest as a computer product located on one or more computer-readable media, the product including computer-readable program code.

[0082] Computer storage media may contain a propagated data signal containing computer program code, for example, on baseband or as part of a carrier wave. This propagated signal may take various forms, including electromagnetic, optical, or suitable combinations thereof. Computer storage media can be any computer-readable medium other than a computer-readable storage medium, which can be used to communicate, propagate, or transmit a program for use by being connected to an instruction control system, apparatus, or device. The program code located on the computer storage medium can be propagated through any suitable medium, including radio, cable, fiber optic cable, RF, or similar media, or any combination of the above media.

[0083] The computer program code required for the operation of each part of this application can be written in any one or more programming languages, including object-oriented programming languages ​​such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C++, C#, VB.NET, Python, etc., conventional procedural programming languages ​​such as C, Visual Basic, Fortran 2003, Perl, COBOL 2002, PHP, ABAP, dynamic programming languages ​​such as Python, Ruby, and Groovy, or other programming languages. This program code can run entirely on the user's computer, or as a standalone software package on the user's computer, or partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the latter case, the remote computer can be connected to the user's computer through any network, such as a local area network (LAN) or wide area network (WAN), or connected to an external computer (e.g., via the Internet), or in a cloud computing environment, or used as a service such as Software as a Service (SaaS).

[0084] Furthermore, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this application are not intended to limit the order of the processes and methods of this application. Although some embodiments that are currently considered useful have been discussed through various examples in the foregoing disclosure, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments. Rather, the claims are intended to cover all modifications and equivalent combinations that conform to the substance and scope of the embodiments of this application. For example, while the system components described above can be implemented by hardware devices, they can also be implemented solely by software solutions, such as installing the described system on existing servers or mobile devices.

[0085] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0086] Finally, it should be understood that the embodiments described in this application are merely illustrative of the principles of the embodiments of this application. Other modifications may also fall within the scope of this application. Therefore, alternative configurations of the embodiments of this application are considered as examples and not limitations, and are regarded as consistent with the teachings of this application. Accordingly, the embodiments of this application are not limited to the embodiments explicitly described and illustrated in this application.

Claims

1. A yarn tension adjusting device, characterized in that, The yarn tension adjustment device includes a yarn feeding assembly, a yarn output assembly, and a tension sensing assembly arranged sequentially along the yarn conveying direction, as well as a control assembly that is communicatively connected to the yarn feeding assembly, the yarn output assembly, and the tension sensing assembly. The yarn feeding assembly includes a plurality of guide rollers that clamp the yarn; The yarn output assembly includes a first connecting rod and a yarn collecting cylinder that rotate coaxially; the first connecting rod has a yarn threading hole, and the yarn passes through the yarn threading hole, winds around the yarn collecting cylinder, and is then output; The tension sensing component is used to sense the current tension of the yarn output from the yarn output component and transmit it to the control component; The control component is used to receive the current tension and control at least one of the rotation state of the plurality of guide wheels, the rotation direction of the first connecting rod, and the rotation direction of the yarn collecting cylinder according to the current tension, so as to adjust the tension of the yarn.

2. The yarn tension adjusting device according to claim 1, characterized in that, The rotation states of the multiple guide wheels include passive rotation, controlled stop rotation, and active rotation; When the current tension matches the set tension, the plurality of guide rollers passively rotate in response to the delivery of the yarn; When the tension is less than the set tension, the control component is used to control the plurality of guide wheels to stop rotating in order to clamp the yarn; When the tension is greater than the set tension, the control component is used to control the plurality of guide rollers to rotate actively to increase the amount of yarn being fed.

3. The yarn tension adjusting device according to claim 2, characterized in that, The control component is used to control the plurality of guide wheels to stop rotating to clamp the yarn after receiving a signal indicating that the yarn is not being pulled by the rotary hook.

4. The yarn tension adjusting device according to claim 1, characterized in that, One end of the first connecting rod is rotatably mounted on the central axis of the yarn collecting cylinder, and can be rotated in a controlled manner to drive the yarn collecting cylinder to spin around the central axis; the minimum radius of the cross section of the yarn collecting cylinder is greater than the rotation radius of the rotary shuttle; the other end of the first connecting rod is provided with the yarn threading hole; When the current tension matches the set tension, the first connecting rod does not rotate, and the yarn collecting cylinder passively rotates along the yarn feeding rotation direction based on the yarn feeding. When the tension is less than the set tension, the control component controls the first connecting rod to rotate in the opposite direction along the yarn feeding rotation direction, thereby tightening the yarn through the yarn threading hole and driving the yarn collecting cylinder to rotate in the opposite direction along the yarn feeding rotation direction to tighten the yarn.

5. The yarn tension adjusting device according to claim 4, characterized in that, The control component is used to control the first connecting rod to rotate in the opposite direction of the yarn feeding rotation after receiving a signal indicating that the yarn is not being pulled by the rotary hook, thereby tightening the yarn through the yarn threading hole and driving the yarn collecting cylinder to rotate in the opposite direction of the yarn feeding rotation to tighten the yarn.

6. The yarn tension adjusting device according to claim 1, characterized in that, The outer surface of the yarn collecting cylinder has a threaded structure.

7. The yarn tension adjusting device according to claim 1, characterized in that, The yarn collecting cylinder has a winding area and a non-winding area. The non-winding area is fixedly connected to both sides of the non-winding area. The radius of the non-winding area is larger than the maximum radius of the winding area. The surface of the winding area along the central axis of the yarn collecting cylinder has an inclined angle.

8. The yarn tension adjusting device according to claim 1, characterized in that, The yarn tension adjusting device further includes a yarn buffer component disposed between the yarn feeding component and the yarn exiting component; the yarn buffer component provides a zigzag conveying path so that the yarn passes along the zigzag conveying path.

9. The yarn tension adjusting device according to claim 8, characterized in that, The yarn buffer assembly includes two side rods rotatably connected end to end, each side rod having multiple yarn passage holes, and the zigzag conveying path is specified as a path that alternately passes through the yarn passage holes on the two side rods.

10. The yarn tension adjusting device according to claim 9, characterized in that, When the tension is greater than the set tension, the yarn pulls on the yarn passage hole to make the included angle between the two side rods smaller and bring them closer together, thereby shortening the zigzag conveying path to release the yarn.

11. The yarn tension adjusting device according to claim 8, characterized in that, The yarn buffer assembly includes a fixed guide point and a second connecting rod; the first end of the second connecting rod is fixedly and rotatably installed, and the second end has a yarn passage hole; the zigzag conveying path is specified as a path that goes around the guide point, passes through the yarn passage hole, and then turns back.

12. The yarn tension adjusting device according to claim 11, characterized in that, When the tension is greater than the set tension, the yarn pulls the yarn through the hole to make the second connecting rod rotate toward the guide point, thereby shortening the zigzag conveying path to release the yarn.

13. A method for adjusting yarn tension, wherein the method is applied to the yarn tension adjusting device as described in any one of claims 1-12, characterized in that, The yarn tension adjustment method includes: Obtain the current tension of the yarn and determine whether the current tension deviates from the set tension; Based on the determined result, control at least one of the rotation state of the plurality of guide wheels, the rotation direction of the first connecting rod, and the rotation direction of the yarn collecting cylinder to adjust the tension of the yarn.

14. A yarn tension adjustment system, characterized in that, The yarn tension adjustment system includes: The acquisition module is configured to acquire the current tension of the yarn and determine whether the current tension deviates from the set tension; The control module is configured to control at least one of the rotation state of the plurality of guide wheels, the rotation direction of the first connecting rod, and the rotation direction of the yarn collecting cylinder based on a determined result, so as to adjust the tension of the yarn.

15. A processing system, characterized in that, include: The memory, the processor, and the computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the yarn tension adjustment method as described in claim 13.

16. A computer-readable storage medium, characterized in that, The storage medium stores a computer program that, when executed by a processor, implements the steps of the yarn tension adjustment method as described in claim 14.

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