Weft yarn extension dynamic state measuring system

Abstract

The invention discloses a weft yarn extension dynamic state measuring system. The weft yarn extension dynamic state measuring system comprises a weaving machine control system, a master control board and a high-resolution encoder which are connected sequentially, and further comprises a weft yarn arrival length measuring system and a weft yarn let-off length measuring system, wherein the weft yarn arrival length measuring system comprises a plurality of detectors uniformly distributed along reed width; photoelectric sensors are mounted on the detectors respectively and are connected with a time data collecting analyzer sequentially; the time data collecting analyzer is connected with a weft yarn arrival amount counter; the weft yarn let-off length measuring system comprises a pair of optical fiber sensors which are connected to a signal processor sequentially; the signal processor is connected with a weft yarn motion analyzer; and the weft yarn motion analyzer is connected with a weftyarn let-off amount counter.

Description

technical field [0001] The invention belongs to the field of looms and relates to an air-jet loom, in particular to a measuring system for measuring the elongation dynamics of weft yarns during weft insertion. Background technique [0002] The reed width of the air-jet loom is continuously widened, and the total length of the weft yarn flight is continuously extended. The weft yarn flight is divided into free flight and restrained flight stages. In the tight state, the tension of the weft yarn increases, and the weft yarn is elongated due to tension. It is required to understand and improve the characteristics of yarn flight from the extension and length of the weft yarn. [0003] The air-jet loom uses jet air as the weft insertion carrier, and the jet air pulls the weft yarn across the reed width. The shape of the weft yarn flight transitions from relaxation to tension, and the weft yarn is elongated due to tension in the later stage of flight. Therefore, measure the weft...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, there is a weft detecting device on the configuration of other parts of the air-jet loom, but the weft detecting device is only arranged outside the cloth width, on the left inlet side of the profiled reed or on the weft catching side at the right end, with To detect whether the weft yarn has reached the detection position, this method of detection cannot understand the characteristics of the weft yarn in motion

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