Zero twist yarn feeding device

A yarn and feeding device technology, applied in textile and papermaking, thin material handling, looms, etc., can solve problems such as limiting the speed of looms, maintain yarn tension, and eliminate the risk of yarn twisting or entanglement Effect

Active Publication Date: 2020-09-18
范德威尔(中国)纺织机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increased yarn tension at insertion limits the speed at which the loom can be operated

Method used

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  • Zero twist yarn feeding device
  • Zero twist yarn feeding device
  • Zero twist yarn feeding device

Examples

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Embodiment Construction

[0032] In the following, a weft feeding arrangement for a weaving machine will be described. In the figures, like reference numerals designate like or corresponding elements throughout the several figures. It should be understood that these drawings are for illustration only and are not intended to limit the scope of the invention in any way. Furthermore, features from different described embodiments may be combined to meet specific implementation needs.

[0033]For many types of yarn, no twist is allowed in the finished fabric. A known reliable way to achieve this is by providing a tangential spread of the spool. However, due to the inertia and limited stability of the spool and winding material, the maximum possible acceleration of the spool will be limited. Also, as has been recognized, the increased speed of the loom will require a weft buffer between the spool and the loom. Even with a buffer, if the speed of the loom increases, the demands on the weft buffer will be ...

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PUM

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Abstract

The present disclosure describes methods and devices for feeding yarn to a weaving machine (10) using a weft feeding arrangement (12) to feed a weft yarn (40) to a loom having at least one rapier (11) ( 10). The yarn feeding arrangement comprises a motor driven bobbin (13) and a motor driven coil buffering device (16). The yarn feeding arrangement further comprises a controller (32) for controlling the motor driven bobbin and the motor of the motor driven coil buffering device. The controller is adapted to: - drive the motor (14) of the motor-driven spool at a speed to feed an average or substantially average amount of weft yarn consumed by the loom, wherein the substantially average amount of weft yarn deviates by less than the loom The actual average amount of the predetermined amount consumed. -driving the motor of the motor-driven loop buffering device based on the difference between the output speed of the yarn (40) from the motor-driven spool and a model of the insertion speed of the weft yarn in said loom, and -based on a representation of the actual weft yarn tension The signal to regulate the drive of the motor of the motor-driven coil buffer device.

Description

technical field [0001] The present disclosure relates to a yarn feeding arrangement. In particular, the present disclosure relates to a yarn feeding arrangement suitable for a rapier loom for weaving flat or ribbon yarns, where the weft yarn should be presented to the loom with zero twist. Background technique [0002] The general development trend in weaving is the increasing speed of looms. Another trend is the increased use of flat or ribbon shaped yarns, which should be inserted without any twisting. Examples of such yarns are polypropylene tapes, carbon fiber tapes, aramid and glass fiber tapes. Currently, the speed at which rapier looms can weave flat or ribbon yarns without twisting is limited by the low capacity of the zero-twist yarn feeding devices that exist today. [0003] Existing systems for feeding yarn without twisting (zero twist) usually have an unwind motor controlled by measuring the length of a large loop buffer located between the spool and the loom....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D03D47/34B65H59/38D03D47/36
CPCB65H59/34B65H2701/31D03D47/345D03D47/36D03D47/369
Inventor B·约翰松帕·约瑟夫松
Owner 范德威尔(中国)纺织机械有限公司
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