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A spinning preparation machine with export regulation

A preparation machine and export technology, applied in the field of carding machine or combing machine, draw frame, drafting system, can solve the problem of large mass moment of inertia, etc., and achieve the effect of dynamic performance improvement

Active Publication Date: 2013-07-17
RIETER INGOLSTADT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A disadvantage of the above two methods is the dynamic limit on the amount of possible variation of the frequency and amplitude with respect to the rotational speed, since the mass to be moved (or the moment of inertia of the mechanical parts involved in the process) is relatively large

Method used

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  • A spinning preparation machine with export regulation
  • A spinning preparation machine with export regulation
  • A spinning preparation machine with export regulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The following will refer to figure 1 The schematic representation of the drawing frame introduces the basic operating mode of a well-known draw frame with adjustment only at the entry. According to this prior art example, several substantially unraveled fiber slivers FB are fed side by side to the drafting system. This corresponds to the possibility of feeding only one fiber sliver FB to the draw frame. The funnel 1 for compacting the fiber sliver FB is placed at the inlet of the draw frame. Other types of compaction devices may also be used. After passing through the sensing units 2 , 3 , which form a pair of sensing cylinders, the now compacted fiber sliver FB ′ comprising the individual fiber sliver FB is fed to the drafting system 4 . The drafting system 4 generally comprises three drafting elements or pairs of rollers, between which the actual drafting will take place. These pairs of rollers include an upstream or inlet pair 5, a central pair 6 and a downstream...

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PUM

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Abstract

The sliver (FB) drawing unit (4), to prepare the sliver for spinning, has an upstream (5) and a downstream (7) pair of rollers. A sensor (2,3,20) monitors the sliver for mass, thickness or density. The sensor signals are passed to a processor (22), which sets the rotary speed of the downstream rollers to be taken off by calender rollers (14). The control sets the rotary speeds of the downstream drawing rollers and the calender rollers at times so that the sliver laying unit (16,17) operates with low dynamics or without rotary speed changes in relation to the drawing and calender rollers.

Description

technical field [0001] The invention relates to a spinning preparation machine in accordance with the preamble of claim 1, in particular to a draw frame, card or comber equipped with a set of A drafting system for drawing and possibly doubling. Background technique [0002] Such machines have been known for a long time. One or more strands of fiber sliver sent to the machine are homogenized by drafting, and the formed fiber sliver is placed in a can. The drafting system of a draw frame generally includes a pair of upstream rollers (pair of inlet rollers), a pair of central rollers and a pair of downstream rollers (pair of outlet rollers), arranged successively along the direction in which the drawn fiber material passes. Each pair of rollers between which the fibrous material is sandwiched rotates in the direction of fiber movement, with a relatively high downstream peripheral speed, to create the draft. The drafting zone between the entrance roller pair and the central r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01H5/32D01H5/38D01H5/74
CPCD01H5/38
Inventor M·于丁克里斯汀·哈斯
Owner RIETER INGOLSTADT GMBH