Yarn end catching device and spinning machine including the same

Abstract

A spinning machine includes a suction pipe (44) for sucking and catching a yarn end of spun yarn 10 and for guiding the yarn end to a yarn splicing device. The suction pipe 44 includes a suction passage 62 for sucking the yarn end and a twist applying nozzle 67. The twist applying nozzle 67 injects compressed air to generate whirling airflow in the suction passage 62, and thus, the twist applying nozzle 67 can apply twists to the spun yarn 10 sucked in the suction passage 62.

Description

technical field [0001] The present invention relates to a yarn end catching device mainly used for catching and guiding yarn in a spinning machine. Background technique [0002] Japanese Unexamined Patent Publication No. 2005-220483 (Patent Document 1) discloses a spinning machine including such a yarn end catching and guiding device. The spinning machine of this patent document 1 has a spinning device, a yarn feeding device, a winding device, and a piecing cart as main components. [0003] The yarn feeding device is equipped with a delivery roller and a nip roller. The spun yarn spun from the spinning device is held between the delivery roller and the nip roller. Conveying spun yarn. [0004] The piecing cart is equipped with a piecing device and a suction pipe. In order to perform piecing by the piecing device, the suction pipe captures and guides the yarn end discharged from the spinning device to the piecing device while sucking it. [0005] In the configuration of P...

AI Technical Summary

Problems solved by technology

[0011] However, the yarn feeding device is omitted in the conveyor-less spinning machine, so the yarn from the spinning device cannot be clamped on the yarn feeding device to produce a true-twisted yarn during the piecing operation (as in Patent Document 1).

Therefore, the spun yarn jetted from the spinning device in order to catch it on the suction tube does not have real twist added, so its yarn strength becomes considerably lower than that of Patent Document 1.

As a result, it is considered that when the yarn end of the spun yarn is supplemented by the suction pipe and then guided to the piecing device, the yarn end is easily broken, and the efficiency of the piecing error (miss) is greatly reduced.

[0012] Although the suction pipes of Patent Documents 1 and 2 are configured to catch the yarn end by suction, a considerable amount of air is consumed, and improvement is required from the viewpoint of energy saving.

Images