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Spinning machines

A method of operation, spinning frame technology, applied in the field of driving device, ring spinning frame, to achieve the effect of eliminating quality problems, reliable methods, and ensuring working conditions

Inactive Publication Date: 2008-12-24
MASCHINENFABRIK RIETER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The result is that disregarding the pre-drawing process has often been optionally set up and thus produced defective

Method used

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  • Spinning machines
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Examples

Experimental program
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Embodiment Construction

[0063] refer to Figure 2a , the fiber bundle 110 passes through a pair of rollers w, passes through the pre-drawing zone, reaches the first pair of rollers w1, and further enters the next pair of rollers w2, and then the fiber bundle 110 is sent to the twisting and winding device. A guide bridge 118 and a dust cage 116 facing the guide bridge are arranged between the roller pair w1 and the roller pair w2, and the end of the dust cage 116 towards the roller pair w2 extends into the space between the guide bridge 118 and the roller pair w2. Each roller of the first pair of rollers w1 is surrounded by a bottom belt 114 and / or a top belt 112 which also run over (only partially shown) guide bridges 118 and / or dust baskets 116 . These two belts are endless belts, driven by the roller pair w1, so that the fiber bundle 110 is transferred from the roller pair w1 to the roller pair w2. For clarity, the guide bridge 118, the bottom belt 114 attached to the guide bridge, and the dust ba...

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PUM

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Abstract

The spinning machine, and especially a ring spinner, has a sliver drawing unit with at least one drive (14,14b) for drawing cylinders (16a). The drive is controlled by a rotary speed setter and especially a frequency setter or converter (22), set by the machine control unit (28). The machine control is extended by a start unit (28a) which can vary the predraft action at the drawing unit by altering the rotary speed of the lower center roller, while the other paired rollers turn at a constant speed, using computed (64) optimum drive control data.

Description

field of invention [0001] The invention relates to a spinning frame, in particular a ring spinning frame, the drafting unit of which has at least one drive for the drafting unit drum, said drive being controlled by a speed controller, in particular a frequency regulator or a frequency converter Controlled, and the governor or frequency regulator is monitored by the central control unit of the machine. It also relates to a drive, in principle any drive of a spinning frame. Background technique [0002] Quality problems occasionally occur when processing fibrous materials under certain conditions. Until now it was not clear what exactly happens in the pre-drafting zone during spinning. In particular it is not clear whether the strips undergo drafting or are merely stretched. Furthermore, it is not clear to the expert whether the pre-drafting zone is required at all. For this reason, no attention has been paid to the question of pre-drafting at all. The result is that disr...

Claims

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Application Information

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IPC IPC(8): D01H5/22D01H5/38D01H1/02D01H1/22D01H5/32D01H5/42D01H13/26
CPCD01H1/22D01H5/32D01H13/26
Inventor T·施瓦布R·布兰德
Owner MASCHINENFABRIK RIETER AG
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