A harrow needle assembly and a weft laying device thereof

By using a sliding rake needle assembly on a warp knitting machine and utilizing a longitudinal drive mechanism to make the rake needle body straight and pierce the yarn, the problem of high yarn resistance and quality degradation caused by oscillating curved needles is solved, thus improving the weft laying quality of the yarn.

CN224280678UActive Publication Date: 2026-05-26CHANGZHOU RUN FENG YUAN TEXTILE MASCH MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU RUN FENG YUAN TEXTILE MASCH MFG CO LTD
Filing Date
2025-04-21
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In the existing technology, when the rake needle assembly of the warp knitting machine uses a swing-set "Z" shaped curved needle to fix the yarn, the resistance is relatively large, which can easily cause fraying or messing up the yarn, resulting in a decrease in weft laying quality.

Method used

The sliding rake needle assembly includes multiple straight rake needle bodies, a rake needle seat, a transverse drive mechanism, and a longitudinal drive mechanism. The longitudinal drive mechanism causes the rake needle bodies to pierce the yarn in a straight line to lock or unlock the yarn, replacing the swinging piercing or releasing method.

Benefits of technology

It reduces the resistance of the yarn during locking or unlocking, prevents the yarn from being tangled or splintered, and improves the quality of weft laying.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model belongs to the field of warp knitting machine technology, specifically relating to a rake needle assembly and its weft-laying device. It includes multiple spaced and straight rake needle bodies, a rake needle seat for mounting the rake needle bodies, a transverse drive mechanism for driving the rake needle seat to reciprocate along a crossbeam, and a longitudinal drive mechanism for driving the rake needle seat to reciprocate longitudinally. The longitudinal drive mechanism includes a base and a screw and nut structure mounted on the base. The transverse drive mechanism includes a rotating power component, a driving wheel connected to the output end of the rotating power component, a driven wheel, and a synchronous belt connecting the driving wheel and the driven wheel. The base and the synchronous belt are fixed. This utility model utilizes the longitudinal drive mechanism to make the rake needle body horizontally pierce the yarn to lock or unlock the yarn, replacing the swinging piercing or releasing method of the prior art. This process involves less resistance and avoids disturbing or fraying the yarn, thus improving the weft-laying quality.
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