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Wearing coating for delivery rollers of a drawing roller frame

A drafting device and coating technology, applied in the direction of drafting equipment, textiles, papermaking, spinning machines, etc., can solve the problems of excessive use and wear of the edge, achieve easy replacement, simple operation, and eliminate asymmetry Effect

Inactive Publication Date: 2011-03-30
德国斯图加特纺织纤维科学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sides of the band wrap are overused and worn down due to running against the edges

Method used

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  • Wearing coating for delivery rollers of a drawing roller frame
  • Wearing coating for delivery rollers of a drawing roller frame
  • Wearing coating for delivery rollers of a drawing roller frame

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The drafting device in Figure 1 represents the general configuration of a double-belt drafting system with lower cylinders 31, 61 and 71, by means of which a fibrous structure F is drawn into a yarn F'. The intermediate pressure roller 6 is surrounded by a drafting belt 60 which is guided and tensioned by a belt frame 63 . The lower drum 61 is surrounded by a drafting belt 62 running on a deflection rail 64 and the belt 60 is pressed against the drafting belt 62 . Compressors 8 and 9 are arranged in front of and in the drafting zone to compress the fiber structure.

[0016] The conveyor cylinder pair comprises a lower cylinder 31 and a pressure roller 3 surrounded by a belt wrap 1 running on a deflecting rail 2 . Since the speed of the pressure roller 3 is approximately 40 or 60 times greater than the speed of the pressure rollers 6 and 7, the band wrap 1 has to run fast. Thus, the deflection rail 2 is provided with a smooth, low-friction belt-running surface 27 and t...

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PUM

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Abstract

The coating of the pressure roller (3) of a drawing roller frame for spinning frames comprises an outer layer and an inner layer fixed to the core of the pressure roller. The outer layer is thinner and harder than the inner layer and is embodied as an endless belt (1) which loosely surrounds the inner layer such that the belt can be displaced in relation to the inner layer. In order to improve the running of the belt, the belt is guided over a deflector rail (2), the cross-sectional area (u) of the rail being wider than the average staple length of the fibre material (F) drawn on the drawing roller frame. Furthermore, the belt is designed in such a way that it comprises a double thread interlining, one thread interlining being wound counter to the second thread interlining such that the threads of one thread interlining cross the threads of the second thread interlining.

Description

technical field [0001] The invention relates to a roll drafting device for a spinning machine, wherein the covering for the pressure roll at the output of the drafting zone comprises an outer layer and an inner layer fastened to the core of the pressure roll, the The outer layer is thinner and stiffer than the inner layer, and the outer layer loosely surrounds the inner layer so that the outer layer can move relative to the inner layer. Background technique [0002] One such device is disclosed in German patent DE 102 60 025.2. Since the running speed of the band wrap on the unwinding cylinder is almost 40 times greater than that of the usual drafting band, it is possible to guide the band wrap very well and to keep the friction on the deflection rails as low as possible. Very important. Therefore, the tension required to guide the band wrapping is low and it is advantageous to manufacture it only so that in the unloaded state the band wrapping tends to be approximately ci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01H5/80D01H5/86
CPCD01H5/80D01H5/86D01H5/26D01H5/00
Inventor 彼得·阿茨特海因茨·穆勒
Owner 德国斯图加特纺织纤维科学研究所