Adjustable yarn feeding device for pre-oxidized yarn tow

By designing an I-beam steel stretcher and plug-in components, the height of the pre-oxidized fiber bundle can be adjusted and stably supported, solving the problem of insufficient adaptability of existing devices, ensuring tension uniformity and morphological stability, and improving ease of use and safety.

CN224493206UActive Publication Date: 2026-07-14SHANGHAI XINDILIANG IND DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI XINDILIANG IND DEV CO LTD
Filing Date
2025-09-10
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Most existing pre-oxidized yarn large tow feeding devices are custom-made with fixed heights, making them less practical and unable to adapt to different production equipment. This causes the large tow to sag due to gravity during the feeding process, resulting in a loose middle and tight ends, affecting tension uniformity and shape stability.

Method used

The first and second layers of I-beam steel stretchers are used. The ball is initially positioned by inserting the connector and spring to push it into the lock hole, and then fixed for a second time with the abutment bolt. Combined with the crossbar and auxiliary components at the top of the second layer stretcher, the height can be adjusted and the support can be stable to ensure the stability of the filament shape.

Benefits of technology

This improved the adaptability and stability of the device, reduced the shape deviation of being loose in the middle and tight at both ends, ensured tension uniformity, and enhanced ease of use and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to an adjustable pre-oxidized fiber large tow yarn feeding device and relates to the technical field of carbon fiber yarn processing. The first layer stretcher and the second layer stretcher are composed of I-shaped steel, cooperate with the supporting steel in the first layer stretcher, significantly improve the overall structural strength and bearing capacity, can stably support the large weight of the pre-oxidized fiber large tow yarn, realize the height increasing effect through the laminated insertion structure of the sleeve and the wedge-shaped insertion block in the insertion assembly, the preliminary positioning of the spring pushing the ball into the lock hole and the secondary fixing of the abutting bolt and the second abutting hole, solve the problems of fixed height and weak practicability of the existing customized stretcher, and guarantee the stability of the laminated connection. The horizontal rod at the top of the second layer stretcher forms a basic support, the sliding block in the auxiliary assembly drives the round rod to move flexibly, and the position is fixed by using the positioning bolt and the positioning hole, so that the falling part in the middle of the tow yarn can be supported.
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