Draft assembly for spinning machine

PROBLEM TO BE SOLVED: To provide a drafting unit for a ring fine spinning frame having such a construction that at least two, advantageously three bottom rollers 11, 12 and 13 range along a number of spinning spots arranged each other, a number of pressure contact rollers 11', 12' and 13&#...

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Bibliographic Details
Main Author H. WOLF,L. MALINA
Format Patent
LanguageEnglish
Published 14.03.2007
Subjects
NATURAL OR ARTIFICIAL THREADS OR FIBRES
SPINNING
SPINNING OR TWISTING
TEXTILES
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Summary:PROBLEM TO BE SOLVED: To provide a drafting unit for a ring fine spinning frame having such a construction that at least two, advantageously three bottom rollers 11, 12 and 13 range along a number of spinning spots arranged each other, a number of pressure contact rollers 11', 12' and 13' each for tightening a sliver 21 are disposed at the respective spinning spots and subject to rotating motion in the direction of silver feed through undergoing a motor driving either directly or via a transmission, and having such an improvement as to enable a drive for the bottom rollers to be assembled inexpensively with space saving and also ensure the bottom rollers to be satisfactorily driven in consideration of their torsion in particular. SOLUTION: This drafting unit has such a scheme that at least one, advantageously all of the bottom rollers 11, 12 and 13 are to be driven at three or more driving spots 16, 16', 16" and 16'".
Bibliography:Application Number: CN20011033984