Yarn separation module and drawing-in and knotting machine including yarn separation module

Abstract

Yarn separation module and drawing-in and knotting machine including it, comprising a yarn separation device for separating a predetermined number of yarns, preferably single yarns, from a yarn layer, and a sensor device for the sensor device for monitoring the yarn separation results, in particular the number of actually separated yarns. The yarn separating device is configured to transfer the separated length of yarn into a gap-like monitoring volume of a monitoring capacitor of the sensor device, the gap-like monitoring volume being formed between a first electrode and a second electrode of the monitoring capacitor, the first The electrode and the second electrode face each other and are spaced transversely to the longitudinal direction of the length portion of the separated yarn when extending through the monitoring volume of the monitoring capacitor. The sensor device further comprises at least two support surfaces for supporting the separated yarns. The two support surfaces are spaced apart in the longitudinal direction and fixed relative to the first electrode and the second electrode, wherein the monitoring volume is at least partially arranged between the two support surfaces.

Description

technical field [0001] The invention relates to a yarn separation module with a yarn separation device and a capacitive sensor device for monitoring the result of a yarn separation process. The invention further relates to a drawing-in machine and a warp-tying or dividing machine comprising at least one such yarn separating module. Background technique [0002] Separation of yarns, especially single yarns from warp sheets, is a necessary basic operating step in many weaving preparation processes and systems, for example in warp-tying machines or automatic drawing-in machines. The warp tying machine is used to tie first yarns from old warp yarn pieces already woven in the loom with second yarns from new warp yarn pieces that will subsequently be woven in the loom. The yarns of the two warp sheets are usually stretched in so-called clamping frames or clamping devices, where the individual yarns are very close to each other. Before knotting, the single yarn must first be sepa...

AI Technical Summary

Problems solved by technology

However, if the yarn is continuously fed into the gap-like monitoring volume, the results will vary depending on the actual position of the yarn within the monitoring volume

Therefore, the structure of EP 0 401 600 B1 is not very suitable for capacitive monitoring of the result of the separation process

Images