Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for determining the quality parameters of a thread

A technology for quality parameters, yarns, applied in the direction of measuring devices, textile and paper making, instruments, etc., capable of solving problems such as yarn splicing devices not working properly

Inactive Publication Date: 2008-06-18
SAURER GERMANY GMBH & CO KG
View PDF4 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] If breaks occur in the yarn joining area during this process, in many cases this is an indication that the yarn joining device under inspection is not working properly

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for determining the quality parameters of a thread
  • Method for determining the quality parameters of a thread

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] FIG. 1 shows a workstation 1 of an open-end spinning machine, which is designed so that the method according to the invention can be carried out on the workstation. A workstation 1 of this type also has an open-end spinning mechanism 2 and a winding mechanism 3 , as is known (and is therefore only shown schematically). The yarn 9 produced in the open-end spinning unit 2 leaves the open-end spinning unit 2 through the yarn drawing tube 21 during normal spinning operation of the workstation 1 . In other words, the yarn 9 is sucked out of the open-end spinning device 2 by means of the yarn drawing device 27 by means of the yarn drawing tube 21 or the connecting piece 16 arranged in this region. On its way to the winding device 3, the yarn 9 also passes the stop mechanism 26, the yarn storage devices 60 and 61 before it is wound on the rotationally driven cross-winding bobbin 8 by the yarn traversing device 24 And waxing device 62.

[0033]Here, the cross-wound bobbin 8 i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for determining the quality parameters of a thread (9), which is produced at a work station (1) of an open-end rotor spinning frame and is wound to form a crosswound bobbin (8). The method is characterised by the following steps. The thread (9) that accumulates on the crosswound bobbin (8) is first laid in a drawing-off unit (27), which temporarily holds the thread (9). The crosswound bobbin (8) is then driven in the winding direction at a predefined test rate by its electric drive motor (56) and a predeterminable minimum tensile force is exerted on the thread (9). In addition, the electric variables of the drive motor (56), such as the rotary angle of the motor rotor, the motor voltage and / or the motor current are recorded and the quality parameter of the thread (9) is determined from at least one of said electric variables, taking into account the thread number that is present.

Description

technical field [0001] The invention relates to a method for determining quality parameters of a yarn produced at a workstation of a textile machine and wound to form a cross-wound bobbin. Textile machines of this type for producing cross-wound bobbins are known in various embodiments and are described in detail in numerous patents. Background technique [0002] An open-end rotor spinning machine is described, for example, in DE 101 39 075 A1, which has a plurality of similar workstations arranged next to each other in a row. At each individual station a yarn is produced which is then wound to form a cross-wound bobbin. For this purpose, the workstations each have a spinning mechanism and a winding mechanism. In addition, the workstations of these textile machines feature yarn draw-offs and suction nozzles. The workstations of this known textile machine are constructed in one piece and each workstation can be operated independently. [0003] DE 198 41 604 A1 describes a ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N33/36D01H13/26
CPCG01N33/365D01H13/26
Inventor 海因茨－格奥尔格·瓦森霍芬
Owner SAURER GERMANY GMBH & CO KG