Thread delivery device with an adaptive regulator

Abstract

A thread delivery apparatus (1) for tension-regulated thread feeding has an adaptive regulator for controlling its drive motor (7). The adaptive regulator controls the drive motor (7) according to the thread tension which is detected by means of a thread tension sensor (12). A calibrating module (16) is provided for determining the compliance of the thread (2) in a test and for fixing the regulating parameters of the regulator correspondingly. This relates, in particular, to the D proportion of the regulator, but can also relate to the P proportion and / or the proportion. The thread delivery apparatus is therefore adapted automatically to different use conditions.

Description

technical field The invention relates to a yarn feeding device for supplying at least one yarn to a yarn consumption location. In particular, the invention relates to a yarn feeding device for yarn feeding under controlled tension. Background technique Yarn feeders for feeding yarn under controlled tension are known. Such as EP0943713A2 discloses a kind of such yarn feeder. The yarn feeder has a yarn feed wheel driven by an electric motor. The yarn is wound around the yarn feeding wheel one or more times and then runs towards the yarn consumption position via the yarn tension sensor. A lifting device is assigned to the yarn tension sensor for sometimes lifting the yarn from the sensor. This eliminates the load on the yarn tension sensor and enables a zero point adjustment. Said yarn feeder is used to supply yarn at a substantially constant tension to a yarn use position. For this purpose, the electric motor and the yarn tension sensor are connected to each other via a...

AI Technical Summary

Problems solved by technology

The distance of the yarn feeder from the yarn consumption position and the characteristics of the yarn can have a positive or negative influence on the function of the regulating loop

this can lead to practical difficulties

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