Method for operating a workstation of a spinning machine or winding machine

Patent metadata

Field	Value
Publication number	US-10829338-B2
Application number	US-201816038465-A
Country	US
Kind code	B2
Filing date	Jul 18, 2018
Priority date	Jul 19, 2017
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

A method at a workstation of a spinning machine or winding machine supplies an auxiliary thread from a thread nozzle to a suction assigned to the workstation, the auxiliary thread stretched between the thread nozzle and the suction. The auxiliary thread is severed to form a thread section protruding into the suction and a thread section extending into the thread nozzle, wherein the thread section protruding into the suction is carried away by the suction. The thread section extending into the thread nozzle is grasped with a thread receiver such that the thread section extending into the thread nozzle extends between the thread nozzle and the thread receiver. The thread section extending into the thread nozzle is severed to form a thread section remaining in the thread nozzle and a thread section coming from the thread receiver. The thread section coming from the thread receiver is transferred to the suction of the workstation. The thread section coming from the thread receiver is grasped with a capture arrangement adjacent a tube at the workstation prior to starting a process of winding the thread section coming from the thread receiver onto the tube.

First claim

The invention claimed is:

1. A method for operating a workstation of a spinning machine or winding machine, comprising:
supplying an auxiliary thread from a thread nozzle to a suction assigned to the workstation, wherein the auxiliary thread is stretched between the thread nozzle and the suction;
severing the auxiliary thread to form a thread section protruding into the suction and a thread section extending into the thread nozzle, wherein the thread section protruding into the suction is carried away by the suction;
grasping the thread section extending into the thread nozzle with a thread receiver of the workstation, wherein the thread section extending into the thread nozzle extends between the thread nozzle and the thread receiver;
severing the thread section extending into the thread nozzle to form a thread section remaining in the thread nozzle and a thread section coming from the thread receiver;
transferring the thread section coming from the thread receiver to the suction of the workstation; and
grasping the thread section coming from the thread receiver with a capture arrangement in an area of a tube made available by the workstation and starting a process of winding the thread section coming from the thread receiver onto the tube.

2. The method as in claim 1 , wherein the auxiliary thread is supplied from the thread nozzle to the suction with a compressed-air flow generated by the thread nozzle.

3. The method as in claim 1 , wherein the auxiliary thread is supplied by the thread nozzle, is subsequently grasped by a suction section of the workstation, and is drawn into the suction via the suction section.

4. The method as in claim 1 , wherein before the severing of the auxiliary thread, the auxiliary thread is deflected towards the thread receiver by a movable thread manipulator.

5. The method as in claim 1 , wherein the severing of the thread section extending into the thread nozzle is done with a cutting within the thread nozzle.

6. The method as in claim 1 , wherein the transfer of the thread section coming from the thread receiver to the suction is done with the thread nozzle, wherein after the transfer, the thread section coming from the thread receiver extends from the thread receiver via the thread nozzle to the suction.

7. The method as in claim 1 , wherein the thread section coming from the thread receiver enters the thread nozzle via a first opening of the thread nozzle and exits the thread nozzle via a second opening of the thread nozzle such that the thread section coming from the thread receiver extends through the thread nozzle.

8. The method as in claim 1 , wherein after the severing of the thread section extending into the thread nozzle, the thread section coming from the thread receiver is joined in the thread receiver to a fiber material of a sliver delivered to the thread receiver or to a thread coming from a supply bobbin before the thread section coming from the thread receiver is transferred to the suction.

9. The method as in claim 1 , wherein the thread nozzle is a component of a service unit that is displaceable along multiple workstations of the spinning machine or winding machine, and the auxiliary thread is made available by the service unit.

10. A thread nozzle for making an auxiliary thread available at a workstation of a spinning machine or winding machine, comprising:
a first opening configurable between an outlet or an inlet for the auxiliary thread;
a second opening configurable between an outlet or an inlet for the auxiliary thread;
a compressed air inlet; and
a controllable multi-way valve in direct communication with the first opening, the second opening, and the compressed air inlet, the multi-way valve controlled to change position to establish which of the first or second openings is an exit for compressed air from the thread nozzle thereby defining the outlet and the inlet for the auxiliary thread.

11. The thread nozzle as in claim 10 , further comprising a pair of delivery rollers configured such that the auxiliary thread extending into or through the thread nozzle is held in position or moved by the delivery rollers.

12. The thread nozzle as in claim 10 , further comprising a cutting unit disposed so as to sever the auxiliary thread.

13. A service unit for a spinning machine or winding machine for delivering an auxiliary thread to a tube made available at a workstation of a spinning machine or a winding machine, wherein the service unit comprises the thread nozzle in accordance with claim 10 .

14. A workstation of a spinning machine or winding machine for manufacturing or for rewinding a yarn, comprising the thread nozzle in accordance with claim 10 assigned to one or multiple workstations of the spinning machine or winding machine.

Assignees

• Rieter Ag Maschf

Inventors

• Bahlmann Bernd
• Pohn Romeo
• Stephan Adalbert
• Maleck Mario
• Hagl Robert
• Pilar Evzen
• Kettner Christian

Classifications

• D01H4/48

  Piecing arrangements; Control therefor {(stopping roving D01H13/18)} · CPC title

• B65H67/081

  acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement · CPC title

• B65H54/26

  having one or more servicing units moving along a plurality of fixed winding units · CPC title

• B65H51/16

  Devices for entraining material by flow of liquids or gases, e.g. air-blast devices (blowing slag wool in molten state C03B37/06) · CPC title

• D01H15/013 Primary

  Carriages travelling along the machines · CPC title