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Drafting device with condensing zone

A compression zone and drafting technology, applied in the direction of drafting equipment, spinning machines, textiles and papermaking, etc., can solve the problems of blockage and interruption in the narrow end zone of the compression channel, and achieve a good compression effect

Active Publication Date: 2011-06-08
MASCHINENFABRIK RIETER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it often happens during operation that this narrow end region of the compression channel is blocked and the operation is interrupted

Method used

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  • Drafting device with condensing zone
  • Drafting device with condensing zone
  • Drafting device with condensing zone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] exist figure 1 The drafting unit 1 shown in basically comprises driveable rollers 2, 4, 6 with compressible pressure rollers 3, 5, 7, which draw a fiber strand 8 made of coarse fibers along the conveying direction A Draft to desired detail. The fiber strand 8 is fed into the drafting mechanism 1 in the form of a fiber strand or sliver via a sliver guide 9 and is guided during drafting in a manner known per se by guide belts 10 and 11 . The drafting of the fiber strand 8 ends at the nip line 12 between the bottom roller 6 and the pressure roller 7 . The fiber strand 13 that has been drafted then passes through a compression zone 14 where it is compressed and compacted. The compression zone is delimited on the output side by a nip line 15 formed by a second pressure roller 16 associated with the bottom roller 6 . After the subsequent clamping of the thread 15 the fiber strand 13 undergoes its twisting treatment and forms the finished yarn 17 .

[0021] The drafting un...

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PUM

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Abstract

The stretching unit (1) has a driveable lower roller (6) attached to press rollers (7, 16). A mechanical unit compresses a fiber assembly moved between the press rollers in a compression zone (14). A transport unit (19) supports the fiber assembly between clamping lines (12, 15) of the press rollers in the compression zone. The mechanical unit compresses a guiding surface with which the fiber assembly is diverted in an axial direction of the lower roller around a part of the width of the fiber assembly from a transport direction.

Description

technical field [0001] The invention relates to a drafting mechanism for drafting coarse fibers, comprising a drivable bottom roller, wherein the bottom roller is equipped with two pressure rollers, wherein in the compression zone between the two pressure rollers a useful A mechanical mechanism for compressing the fiber strands drawn in the drafting mechanism, and in the compression zone there is provided a transport for supporting the fiber strands to be compressed between the clamping lines of the two pressure rollers mechanism. [0002] The invention furthermore relates to a compression part of a drafting mechanism for drafting coarse fibers, comprising a concave cylindrical support surface for the bottom roller of the drafting mechanism, and comprising a Mechanical mechanism of the drawn fiber strands, comprising at least two guide surfaces arranged opposite one another, which directly adjoin the support surface. Background technique [0003] Such a drafting mechanism ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01H5/18D01H5/72
CPCD01H5/72
Inventor G·斯塔莱克
Owner MASCHINENFABRIK RIETER AG