Spinning device and method for spinning up a spinning device

Patent metadata

Field	Value
Publication number	US-11795582-B2
Application number	US-201816754933-A
Country	US
Kind code	B2
Filing date	Oct 8, 2018
Priority date	Oct 12, 2017
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

What is shown is a spinning device ( 1 ) and a method for spinning up a spinning device ( 1 ) for the continuous extrusion of molded bodies ( 3 ) from a spinning solution ( 6 ), as well as a spin-up device ( 11 ) for the execution of the method, in which method the molded bodies ( 3 ) are extruded from the spinning solution ( 6 ) through spinnerets ( 7 ) of the spinning device ( 1 ) in the form of a loose spinning curtain ( 2 ), the molded bodies ( 3 ) of the loose spinning curtain ( 2 ) are, after the extrusion, combined into a molded body bundle ( 4 ), and the molded body bundle ( 4 ) is, in a further step, fed to a draw-off member ( 10 ) of the spinning device ( 1 ) in order to start a continuous extrusion of the molded bodies ( 3 ). In order to make the method for spinning up the spinning device ( 1 ) simpler and more reproducible, it is proposed that the molded bodies ( 3 ) be combined into the molded body bundle ( 4 ) by twisting the spinning curtain ( 2 ) around a torsion axis ( 20 ).

First claim

What is claimed is:

1. A spin-up device for spinning-up a spinning device, which comprises a bundling device for bundling of molded bodies from a loose spinning curtain extruded from spinnerets of a spinning device into a molded body bundle, which bundling device includes a rotation device configured to be used during spin-up, wherein the rotation device comprises at least one turntable that is rotatable around a rotation axis, the turntable being configured such that the molded bodies are combined into the molded body bundle with the help of said turntable, wherein the turntable is for the torsion of the molded bodies, and that the rotation axis of the turntable is substantially parallel to the extrusion direction of the molded bodies, wherein the rotation device is configured to receive ends of the molded bodies from the loose spinning curtain so that the ends of the molded bodies are deposited on the turntable and the turntable is configured to generate a torsion of the loose spinning curtain.

2. The spin-up device according to claim 1 , wherein the turntable is configured for twisting the extruded molded bodies around a common torsion axis and that the torsion axis of the molded bodies coincides with the rotation axis of the turntable.

3. The spin-up device-according to claim 1 , wherein the turntable includes holding elements to increase the adhesion between the molded bodies and the turntable.

4. The spin-up device according to claim 1 , wherein the spin-up device includes a first manipulator arm with a first end effector, the first end effector including a gripper for grabbing a molded body bundle.

5. The spin-up device according to claim 1 , wherein the spin-up device includes a second manipulator arm with a second end effector, the second end effector including the bundling device.

6. The spin-up device according to claim 1 or 5 , wherein the bundling device is configured as displaceable between a rest position and a use position.

7. A spinning device for the continuous extrusion of molded bodies from a spinning solution, comprising at least a spinning bath container containing spinning bath, spinnerets associated with the spinning bath container for the extrusion of the molded bodies from the spinnerets into the spinning bath, with a spin-up device for spinning up the spinning device according to claim 1 .

8. The spin-up device according to claim 3 , wherein the holding elements are hooks.

9. The spin-up device according to claim 6 , wherein the bundling device is configured as displaceable between a rest position and a use position by means of the second manipulator arm.

10. The spinning device according to claim 7 , wherein the molded bodies are cellulosic molded bodies extruded from a spinning solution comprising water, cellulose, and tertiary amine oxide.

11. Use of a spin-up device for spinning-up a spinning device, wherein the spin-up device comprises a rotation device configured to be used during spin-up, wherein the rotation device comprises a turntable that is rotatable with respect to the spinning device, for bundling of molded bodies from a loose spinning curtain extruded from spinnerets of the spinning device into a molded body bundle by twisting the molded bodies by the turntable, wherein the rotation device is configured to receive ends of the molded bodies from the loose spinning curtain so that the ends of the molded bodies are deposited on the turntable and a torsion of the loose spinning curtain is generated by rotating motion of the turntable.

Assignees

• Chemiefaser Lenzing Ag

Inventors

• Dürnberger Franz Alfred
• Ladner Karl
• Lauber Martin
• Reischl Daniel

Classifications

• D01D5/06

  Wet spinning methods {(D01D5/0046 takes precedence)} · CPC title

• D01D5/02 Primary

  Starting the formation · CPC title

• B65H51/02

  Rotary devices, e.g. with helical forwarding surfaces (devices for temporarily storing filamentary material during forwarding B65H51/20; driven rotary devices for controlling tension B65H59/18) · CPC title

• B65H54/00

  Winding, coiling, or depositing filamentary material (cores, formers, holders, cans or receptacles B65H75/02) · CPC title

• D01D4/022

  Processes or materials for the preparation of spinnerettes · CPC title