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How do the winding tension and speed of the HOY spinning production line affect the unwinding performance of the yarn cake? Is the end face bulge avoided by tension closed-loop control?

1. The influence of winding tension on the unwinding performance of the yarn cake
The winding tension is a direct reflection of the tensile force on the yarn in the HOY spinning process. Appropriate winding tension can make the yarns tightly and evenly arranged on the bobbin during the winding process to form a yarn cake with a stable structure. If the tension is too small, the yarns are prone to relaxation during winding, resulting in gaps between the yarn layers inside the yarn cake, affecting the tightness and uniformity of the yarn cake. During the unwinding process, such a relaxed yarn cake is prone to problems such as broken ends and entanglement, reducing the unwinding efficiency.
On the contrary, if the winding tension is too large, the yarn is prone to stress concentration when it is over-stretched, making it difficult for the yarn cake to maintain a stable tension state during unwinding. In addition, excessive tension may also cause bulges or depressions on the end face of the yarn cake, affecting the appearance quality and subsequent processing performance of the yarn cake.
The winding tension also directly affects the tension stability of the yarn cake during the unwinding process. The ideal silk cake should maintain constant tension during the unwinding process to ensure the uniformity and stability of the yarn. If the winding tension is not set properly, the silk cake may experience tension fluctuations during unwinding, resulting in uneven yarn thickness, decreased strength and other problems.

2. The influence of winding speed on the unwinding performance of silk cake
The winding speed is another important process parameter on the HOY spinning production line. It determines the winding speed of the silk strip on the bobbin and the speed of the silk cake formation. The appropriate winding speed can ensure that the silk strip is fully shaped during the winding process to form a silk cake with stable structure and good appearance.
If the winding speed is too fast, the silk strip may not be fully shaped during the winding process, resulting in a loose internal structure of the silk cake and insufficient adhesion between the silk layers. During the unwinding process, this loose silk cake is prone to problems such as broken ends and entanglement, affecting the unwinding efficiency and yarn quality. In addition, too fast a winding speed may also cause hairiness and flying flowers on the surface of the silk cake, affecting the appearance quality and subsequent processing performance of the silk cake.
The winding speed also affects the speed stability of the silk cake during the unwinding process. The ideal silk cake should maintain a constant speed during the unwinding process to ensure the continuity and stability of the yarn. If the winding speed is not set properly, the silk cake may experience speed fluctuations during unwinding, resulting in unstable yarn tension, decreased strength and other problems.

3. Application of tension closed-loop control in HOY spinning production line
In order to avoid quality problems such as bulges on the end face of the silk cake and improve the unwinding performance of the silk cake, the HOY spinning production line usually adopts a tension closed-loop control system. The application of this system has been widely recognized and promoted in comprehensive technical advantage enterprises such as Jiaxing Shengbang Mechanical Equipment Co., Ltd., which specializes in the research and development, production, sales, maintenance of key spinning parts and spinning machinery, and the research and development of new materials and new fabrics.
The tension closed-loop control system is mainly composed of a tension sensor, a controller and an actuator. The tension sensor is responsible for real-time monitoring of the tension value of the silk strip during the winding process and transmitting the signal to the controller. The controller compares and analyzes the preset tension value and the actual monitored tension value, and then issues a control instruction to the actuator. The actuator adjusts the winding tension according to the control instruction to keep the silk strip in a constant tension state during the winding process.
Jiaxing Shengbang Mechanical Equipment Co., Ltd. is well aware of the importance of tension closed-loop control systems during its R&D and production processes. The company's R&D department continuously innovates and optimizes tension sensors, controllers and actuators to ensure the stability and accuracy of the system. The company's production department, including machining workshops, maintenance workshops, plasma coating workshops, etc., are equipped with advanced production equipment and technology, providing strong support for the manufacture and maintenance of tension closed-loop control systems.

Through tension closed-loop control, HOY spinning production lines can effectively avoid quality problems such as bulges on the end faces of yarn cakes. Because the system can monitor and adjust the tension value during the winding process in real time, ensuring that the yarn is subjected to constant tension during the winding process. This allows the yarn to be tightly and evenly arranged on the bobbin during the winding process, forming a yarn cake with a stable structure and good appearance.
Tension closed-loop control can also improve the unwinding performance of the yarn cake. Because the system can ensure that the yarn cake maintains a constant tension state during the unwinding process, avoiding problems such as uneven yarn thickness and reduced strength caused by tension fluctuations. In addition, tension closed-loop control can also reduce the phenomenon of broken ends and entanglement of silk cakes during the unwinding process, and improve unwinding efficiency and yarn quality.
In practical applications, the tension closed-loop control system needs to be optimized and adjusted according to the specific production situation and equipment characteristics. For example, the appropriate tension value and control strategy can be set according to different fiber varieties, yarn counts and winding speed parameters. It is also necessary to regularly inspect and maintain the tension sensor, controller and actuator to ensure their normal operation and accuracy.

Jiaxing Shengbang Mechanical Equipment Co., Ltd. has a professional technical team and rich experience in maintenance and service. The company is able to provide customers with timely and effective maintenance services to ensure the normal operation of the tension closed-loop control system. The company also regularly provides technical training and support to customers to help customers better understand and apply the tension closed-loop control system.
With the continuous development and advancement of textile technology, the tension closed-loop control system is also constantly updated and improved. For example, some advanced HOY spinning production lines have adopted intelligent tension control systems, which optimize tension control strategies and improve control accuracy by introducing artificial intelligence algorithms and big data analysis technologies. These intelligent tension control systems can more accurately predict and adjust the tension value during the winding process, further improving the quality and unwinding performance of the yarn cake.