Electronic cam curve real-time switching method and system for weft laying of warp knitting machine

By establishing an electronic cam coupling relationship between the master axis and the slave axis in the motion controller, a matching second electronic cam curve is generated in real time, which solves the problem of electronic cam curve lag in the prior art, realizes real-time switching, reduces resource waste and mechanical shock, and improves the stability and product consistency of high-speed warp knitting machines.

CN121680131APending Publication Date: 2026-03-17NEWTRY COMPOSITE
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Patent Information

Application Number
CN202610204353.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-12
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

In existing technologies, when warp knitting machines modify weft laying process parameters, the electronic cam curve only takes effect after the current cycle is completed, resulting in lag and resource waste, and making real-time switching impossible.

Method used

By establishing an electronic cam coupling relationship between the master and slave axes in the motion controller, a second electronic cam curve adapted to the new process parameters is generated in real time. Real-time switching of the electronic cam curve is achieved through master axis position mapping and continuity constraints, avoiding jumps caused by mid-process switching.

Benefits of technology

This technology enables electronic cam curves to take effect immediately when process parameters change without waiting for the cycle to end, reducing waste yarn, improving the stability and reliability of high-speed operation, and reducing mechanical impact and yarn deviation.

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Abstract

The invention relates to the technical field of textile, in particular to an electronic cam curve real-time switching method and system for weft laying of a warp knitting machine, and the method comprises the steps: constructing an electronic cam coupling relation between a main shaft and a slave shaft in a motion controller of a weft laying device of the warp knitting machine, and building a first electronic cam curve based on a first process parameter; and generating a second electronic cam curve based on the second process parameter after the process parameter is modified. When the electronic cam curves are switched, the periodic position of the main shaft in the first electronic cam curve is obtained, proportional mapping is carried out according to the first periodic parameter and the second periodic parameter, the corresponding periodic position of the main shaft in the second electronic cam curve is calculated, and when the electronic cam curves are switched, the virtual position of the main shaft on the new curve is synchronously updated. Smooth switching of a new electronic cam curve and an old electronic cam curve in a weft laying period is achieved through cooperation of main shaft period parameter scaling, monotone section selection and displacement continuity constraint, and the real-time performance and stability of weft laying control of the multi-axial warp knitting machine are improved.
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