EP1548162A2 - Bancs d'étirage comprennant un moyen de transport des fibres ayant une durée de vie prolonger - Google Patents

Bancs d'étirage comprennant un moyen de transport des fibres ayant une durée de vie prolonger Download PDF

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Publication number
EP1548162A2
EP1548162A2 EP04027376A EP04027376A EP1548162A2 EP 1548162 A2 EP1548162 A2 EP 1548162A2 EP 04027376 A EP04027376 A EP 04027376A EP 04027376 A EP04027376 A EP 04027376A EP 1548162 A2 EP1548162 A2 EP 1548162A2
Authority
EP
European Patent Office
Prior art keywords
endless belt
feeding means
pair
fiber
drafting apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04027376A
Other languages
German (de)
English (en)
Other versions
EP1548162A3 (fr
Inventor
Takahiro Toyoda
Shin-Ichi Satomi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Machinery Ltd
Original Assignee
Murata Machinery Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Murata Machinery Ltd filed Critical Murata Machinery Ltd
Publication of EP1548162A2 publication Critical patent/EP1548162A2/fr
Publication of EP1548162A3 publication Critical patent/EP1548162A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/86—Aprons; Apron supports; Apron tensioning arrangements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons

Definitions

  • This invention concerns a drafting apparatus constructed in a way such that a fiber bundle is transported to the downstream side while stretched, and particularly, to improvement on fiber feeding means in the drafting apparatus.
  • a drafting apparatus As well known, a drafting apparatus, as shown in Fig. 3, has been installed in a yarn manufacturing machine such as a spinning machine constituted of a drafting apparatus D and a spinning member S downstream thereof and besides in a fiber processing machine such as a roving machine and a slivering machine.
  • the drafting apparatus D in a spinning machine as an example thereof includes : plural pairs of drafting rollers, which constitutes pairs of fiber feeding means.
  • the drafting rollers are for use in drafting a sliver F and constituted of, for example, a pair of front rollers Rf, a pair of second rollers R2 having aprons, a pair of third rollers R3 and a pair of back rollers Rb.
  • the invention has been made in order to solve the problem of the prior art and it is an object of the invention to provide a drafting apparatus, one of a pair of fiber feeding means constituting which is formed with an endless belt as an especially important element to thereby achieve a longer lifetime in service of a front roller Rf, to realize labor-saving in spinning operation and to improve an operation efficiency.
  • the invention set forth in claim 2 is the drafting apparatus set forth in claim 1, characterized in that a tension is imparted to the endless belt in state of being wound around at least two pulleys, one of the at least two pulleys works to bring the endless belt into contact with the nip point so as to form the nip point, the at least two pulleys are disposed so that a direction in which the endless belt extends between the at least two pulleys intersects with a direction in which the fiber bundle is fed and the endless belt is wound around the at least two pulleys.
  • Fig. 1 is a side view schematically showing a main section of a spinning machine combined with a drafting apparatus according to the invention.
  • Figs. 2 A and 2B show an example of the drafting apparatus in which an endless belt is applied to the top side of a pair of a first feeding means Rf, wherein Fig. 2A is a plan view schematically showing a main portion thereof and Fig. 2B is a cross sectional view of part of the endless belt together with related portions thereof.
  • the endless belt means 11 in the pair of first feed means Rf includes the endless belt 12 and at least two pulleys 14 and 15 and a tension is imparted to the endless belt 12 in a state of being wound around the at least two pulleys 14 and 15.
  • the pulley 14 brings the endless belt 12 into contact with the nip point N so as to form the nip point N, which can be realized with a configuration in which a line EL in a direction in which the endless belt means 11 spanned over the two pulleys extends intersects with a direction FD in which the fiber bundle is fed.
  • plural pairs of fiber feeding means include: a pair of first feeding means Rf; a pair of second feeding means R2 having aprons; a pair of third feeding means R3 and a pair of fourth feeding means Rb in the order from the downstream side, wherein each of the pairs of second, third and fourth feeding means R2, R3 and Rb are constituted of a top roller 2 and bottom roller 3 combined and the pair of first feeding means Rf is constituted of the endless belt means 11 and a bottom roller 3 combined.
  • Each of these pairs of fiber feeding means is higher in speed toward the downstream side.
  • the endless belt 12 is composed of a pair of fiber feeding means having the highest fiber feed speed in the most downstream side, that is disposed in the pair of first feeding means Rf.
  • a sliver F is drafted through the front roller Rf, the second roller R2 and the third roller R3, thereafter, guided into an air nozzle S1 and a pair of twisting rollers T constituting a spinning member S and a fiber bundle is twisted by a cooperative action of the air nozzle S1 and the twisting rollers T.
  • a twisting efficiency of the combination is high with the result that a yarn can be spun at a high speed (200 m/min or higher).
  • the effect of a longer lifetime in service in the invention is more conspicuous with a higher spinning speed, that is with a higher feed speed of the drafting apparatus D.
  • a pulley 14 for bringing the endless belt 12 into contact with the nip point N has the protrusions 16 and 17 formed outwardly from the both ends 12a and 12a of the endless belt 12 in the width direction thereof and the level difference portions d are formed between each of the protrusions 16 and 17, and the contact portion at the nip point N of the endless belt 12. That is, if an outer diameter of the pulley 14 is set to ⁇ 1, an outer diameter of the protrusions 16 and 17 is set to ⁇ 2 and a thickness of the endless belt 12 is set to t by definition, the level difference portions d are formed if setting is made so as to establish a relation of [ ( ⁇ 2 - ⁇ 1) /2] ⁇ t.
  • a drafting apparatus D related to the invention is applied to a spinning machine using a vortex air stream
  • the invention is not limited the this application and can also applied to any of fiber processing machines each installed with a drafting apparatus such as a roving machine, slivering machine and a ring fine spinning machine.
  • one of the pair of the fiber feeding means is constituted of an endless belt to thereby enable a longer lifetime in service of the fiber feeding means to be realized; thereby enabling the desired object to be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP04027376A 2003-12-22 2004-11-18 Bancs d'étirage comprennant un moyen de transport des fibres ayant une durée de vie prolonger Withdrawn EP1548162A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003424665A JP2005179857A (ja) 2003-12-22 2003-12-22 ドラフト装置
JP2003424665 2003-12-22

Publications (2)

Publication Number Publication Date
EP1548162A2 true EP1548162A2 (fr) 2005-06-29
EP1548162A3 EP1548162A3 (fr) 2006-12-20

Family

ID=34544929

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04027376A Withdrawn EP1548162A3 (fr) 2003-12-22 2004-11-18 Bancs d'étirage comprennant un moyen de transport des fibres ayant une durée de vie prolonger

Country Status (3)

Country Link
EP (1) EP1548162A3 (fr)
JP (1) JP2005179857A (fr)
CN (1) CN1637179A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007101742A1 (fr) * 2006-03-08 2007-09-13 Deutsche Institute für Textil- und Faserforschung Stuttgart Couche d'usure pour cylindres de sortie d'un banc d'étirage à cylindres
WO2010016808A1 (fr) * 2008-08-04 2010-02-11 Ozdilek Alisveris Merkezleri Ve Tekstil Sanayi Anonim Sirketi Système de fabrication de fil compact

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012117181A (ja) * 2010-12-03 2012-06-21 Toyota Industries Corp 前紡工程のドラフト装置
CN104963051B (zh) * 2015-07-09 2018-03-13 上海兰邦工业纤维有限公司 机械紧密纺制造芳纶纤维纱线及其芳纶包芯纱的方法、装置和制备的芳纶包芯纱

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE816069C (de) * 1950-03-08 1951-10-08 Deutscher Spinnereimaschb Ingo Streckwerk fuer Spinnmaschinen
GB1184787A (en) * 1960-11-20 1970-03-18 Mackie & Sons Ltd J Improvements relating to Textile Drafting Apparatus
DE10260025A1 (de) * 2002-12-19 2004-07-08 Deutsche Institute für Textil- und Faserforschung (DITF) Belag für Streckwerkswalzen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007101742A1 (fr) * 2006-03-08 2007-09-13 Deutsche Institute für Textil- und Faserforschung Stuttgart Couche d'usure pour cylindres de sortie d'un banc d'étirage à cylindres
US8099835B2 (en) 2006-03-08 2012-01-24 Deutsche Institute fur Textile-und Faserforschung Stuttgart Wearing coating for delivery rollers of a drawing roller frame
WO2010016808A1 (fr) * 2008-08-04 2010-02-11 Ozdilek Alisveris Merkezleri Ve Tekstil Sanayi Anonim Sirketi Système de fabrication de fil compact

Also Published As

Publication number Publication date
JP2005179857A (ja) 2005-07-07
EP1548162A3 (fr) 2006-12-20
CN1637179A (zh) 2005-07-13

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