Yarn doubling and plying device and method thereof

Abstract

The invention relates to a yarn doubling and plying device and method thereof. Through the use of air flow type plying mechanism to replace the traditional tension devices such as the tension piece, the device conducts the doubling and plying processes of multiple yarns before the twisting process. The air pressure between multiple yarns is reduced sharply through the function of ejection air flow. A plurality of yarns entangle each other. At the same time the ejection air flow forms a vortex flow in a yarn channel which is beneficial to the collective entanglement when the yarns moves outward. The device and the method takes the advantage of air flow direction to stabilize the relaxed condition during the yarn doubling and plying processes, and make the tensile strength more uniform to attain the optimal effect of yarn doubling and plying. The device and the method can satisfy the doubling and plying operation of different types of yarns, especially the yarns made of drastically different materials, such as linen and polyester.

Description

technical field [0001] The invention relates to the textile field, in particular to a yarn doubling and plying device and method. Background technique [0002] In the doubling and plying process of the yarn-dyed industry, the traditional doubling and plying devices containing tension devices such as tension sheets are generally used for doubling and plying. This type of device has a good doubling effect on yarns such as cotton threads. With the continuous improvement of user needs, it is necessary to perform paralleling and plying on a variety of different yarns before twisting, but the traditional paralleling and plying device is difficult to meet the requirements of many types of yarns, especially for some special varieties , such as the parallel joint stock of hemp and polyester. The fiber properties of hemp and polyester are different. For example, hemp fiber is strong and uneven in thickness, while polyester fiber is smooth and uniform in length without streaks. The t...

AI Technical Summary

Problems solved by technology

The traditional doubling and plying device and process will be difficult to control the slack of hemp and polyester yarns due to uneven tension. For example, it is difficult for the traditional tension device using a tension sheet to press the hemp yarn and make it parallel with the polyester yarn. Wire

Due to the large difference of raw materials and different thread tensions in the traditional doubling process, the cohesion is too poor, which easily leads to broken wires or hemp in the subsequent twisting process.

The occurrence of broken wire or hemp will cause a series of problems such as downtime in the subsequent process and holes in the cloth surface, which cannot meet the production quality requirements

Images