Traversing unit, method for operating a traversing unit, and workstation comprising a traversing unit

Patent metadata

Field	Value
Publication number	US-10927481-B2
Application number	US-201816170086-A
Country	US
Kind code	B2
Filing date	Oct 25, 2018
Priority date	Oct 25, 2017
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

A traversing unit for traversing a yarn with respect to a pair of delivery rollers of a workstation of a textile machine includes a yarn-guiding unit, a single traversing drive configured with the yarn-guiding unit, and a conversion element configured with the single traversing drive such a rotational movement (ω) of the single traversing drive is converted into a linear, reciprocating movement of the yarn-guiding unit. The single traversing drive is a rotating motor. A sensor is disposed to detect at least a middle position of the yarn-guiding unit.

First claim

The invention claimed is:

1. A traversing unit for traversing a yarn with respect to a pair of delivery rollers of a workstation of a textile machine, comprising:
a yarn-guiding unit;
a single traversing drive at the workstation configured with the yarn-guiding unit, wherein each workstation of the textile machine has a respective single traversing drive;
a conversion element configured with the single traversing drive such that a rotational movement (w) of the single traversing drive is converted into a linear, reciprocating movement of the yarn-guiding unit;
the single traversing drive comprising a rotating motor; and
a sensor disposed at the workstation to detect at least a middle position (M) of the yarn-guiding unit.

2. The traversing unit as in claim 1 , wherein the conversion element comprises an eccentric element that interacts with a guide element provided on the yarn-guiding unit.

3. The traversing unit as in claim 2 , wherein the guide element comprises two guide edges between which the eccentric element is guided.

4. The traversing unit as in claim 1 , wherein the sensor is situated adjacent to the conversion element.

5. The traversing unit as in claim 4 , wherein the sensor comprises a Hall sensor and the conversion element comprises a magnetic element.

6. A traversing unit for traversing a yarn with respect to a pair of delivery rollers of a workstation of a textile machine, comprising:
a yarn-guiding unit;
a single traversing drive configured with the yarn-guiding unit;
a conversion element configured with the single traversing drive such that a rotational movement (w) of the single traversing drive is converted into a linear, reciprocating movement of the yarn-guiding unit;
the single traversing drive comprising a rotating motor;
a sensor disposed to detect at least a middle position (M) of the yarn-guiding unit; and
wherein the yarn-guiding unit comprises one or both of a cutting unit and a blowing unit, with the aid of which the yarn can be cut in two or a yarn end can be blown into the workstation.

7. The traversing unit as in claim 1 , wherein the yarn-guiding unit comprises a measuring unit, with the aid of which a condition of the yarn can be detected.

8. The traversing unit as in claim 1 , wherein the single traversing drive is fixedly situated at the workstation, and the conversion element comprises an eccentric element that interacts with a guide element provided on the yarn-guiding unit, the guide element displaceable with respect to the workstation with the aid of the eccentric element.

9. The traversing unit as in claim 1 , wherein one or both of the sensor and the conversion element are situated on the traversing unit such that an aligned position of the yarn-guiding unit with respect to a draw-off tube of the workstation is detectable.

10. A workstation of a textile machine, comprising a traversing unit according to claim 1 .

11. A method for operating a traversing unit of a workstation of a textile machine, comprising:
guiding a moving yarn in a yarn-guiding unit of the traversing unit and moving the yarn-guiding unit linearly back and forth with a single traversing drive at the workstation and a conversion element to traverse the yarn with respect to a pair of delivery rollers, wherein each workstation of the textile machine has a respective single traversing drive;
operating the single traversing drive as a rotating motor; and
detecting a middle position (M) of the yarn-guiding unit with the aid of a sensor.

12. A method for operating a traversing unit of a workstation of a textile machine, comprising:
guiding a moving yarn in a yarn-guiding unit of the traversing unit and moving the yarn-guiding unit linearly back and forth with a single traversing drive and a conversion element to traverse the yarn with respect to a pair of delivery rollers;
operating the single traversing drive as a rotating motor;
detecting a middle position (M) of the yarn-guiding unit with the aid of a sensor; and
wherein during an interruption of the moving yarn, the yarn-guiding unit is positioned at the workstation such that the yarn-guiding unit is aligned with a draw-off tube of the workstation.

13. The method as in claim 11 , further comprising detecting a position of the conversion element with the sensor in order to position the yarn-guiding unit on the workstation.

14. The method as in claim 11 , further comprising driving the single traversing drive in accordance with a predefined speed profile.

Assignees

• Rieter Ag Maschf
• Maschf Riefer Ag

Inventors

• Hagl Robert
• Gruber Thomas
• Hoyer Andreas
• Bahlmann Bernd

Classifications

• B65H51/10 Primary

  with opposed coacting surfaces, e.g. providing nips · CPC title

• D01H13/06 Primary

  Traversing arrangements · CPC title

• B65H57/28

  Reciprocating or oscillating guides (traversing devices for winding, coiling, or depositing filamentary material B65H54/28) · CPC title

• B65H2701/31

  Textiles threads or artificial strands of filaments · CPC title