Device for automatic spinning start in an open-end spinning machine

Abstract

A yarn (F) automatic spinning-in device (1) on a spinning apparatus of a free end spinning machine (3) has a spinning pre-spinning assembly (25) to spin-in by cutting and pre-spinning the yarn tip (F') with spinning-in and a feed assembly (23) that guides the yarn tip (F') with spinning-in to the spinning machine by a rotational arm (28) and a clamp (24). The feed assembly (23) is provided with a thread-guide (27) that is fixedly arranged on the rotational arm (28) of the feed assembly (23) and maintains distance constant with the clamp (24) in the process of feeding motion of the feed assembly (23). The yarn tip (F') with spinning-in is not changed in position related to the clamp (24). The free end spinning machine (3) has an automatic spinning-in device (1).

Description

technical field [0001] The invention relates to an automatic yarn spinning-in device on a spinning box of an open-end spinning machine. This device has a yarn pre-spinning unit for cutting and pre-spinning the spun-in yarn end, and a spinning arm and clamp to guide the spun-in yarn end to the spinning unit Yarn feeding components. A yarn guide is arranged on the yarn feeding assembly. Background technique [0002] According to the existing technical level, various automatic head spinning devices are known. In the Rieter Ingolstadt Spinning Machinery Manufacturing AG's brochure "Rotorspinner R40-Roboter" (air spinning machine R40-automatic machine), an automatic spinning device of this type is described, which is arranged longitudinally along the spinning machine on a mobile set of maintenance equipment. In preparation for spinning-in, the yarn end wound on the bobbin is sucked in by a yarn end suction nozzle and tensioned between the yarn handlers of the maintenance devi...

AI Technical Summary

Problems solved by technology

Therefore, when the yarn feeder moves linearly, the yarns move relative to each other in the clamping plate, which can lead to malfunctions in further processing or defects in the finished yarn

In addition, because the geometric position of the yarn processor when it is spinning on the empty bobbin is different from the geometric position of the yarn processor after the yarn is broken, it is difficult to make the yarn feeding assembly relative to the yarn processor. best alignment

The re-threading of the threaded yarn into the pulling mechanism of the open-end spinning machine will also cause relative movement of the yarn in the clamping plate of the yarn feeding assembly, which will also cause malfunctions

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