EP0066437A1 - Train d'étirage - Google Patents

Train d'étirage Download PDF

Info

Publication number
EP0066437A1
EP0066437A1 EP82302647A EP82302647A EP0066437A1 EP 0066437 A1 EP0066437 A1 EP 0066437A1 EP 82302647 A EP82302647 A EP 82302647A EP 82302647 A EP82302647 A EP 82302647A EP 0066437 A1 EP0066437 A1 EP 0066437A1
Authority
EP
European Patent Office
Prior art keywords
fallers
brush
pins
drawing frame
cleaning
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.)
Granted
Application number
EP82302647A
Other languages
German (de)
English (en)
Other versions
EP0066437B1 (fr
Inventor
Robert John Hunt
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.)
James Mackie and Sons Ltd
Original Assignee
James Mackie and Sons 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 James Mackie and Sons Ltd filed Critical James Mackie and Sons Ltd
Publication of EP0066437A1 publication Critical patent/EP0066437A1/fr
Application granted granted Critical
Publication of EP0066437B1 publication Critical patent/EP0066437B1/fr
Expired 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
    • D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
    • D01H5/64—Rollers or aprons with cleaning surfaces
    • D01H5/645—Rollers or aprons with cleaning surfaces in cooperation with suction or blowing means

Definitions

  • One form of textile drawing frame includes pinned fallers mounted between a pair of endless chains by means of which they are driven or carried round a closed circuit, shaped to define a generally horizontal working reach over which the sliver to be drafted is pinned by the fallers.
  • These frames may be either of the open type, that is to say having only a lower set of fallers on which the fibres being drafted rest, or of the intersecting type with upper and lower sets of co-operating fallers so that the fibres being drafted are pinned from both below and above. It is with this second type that the present invention is concerned.
  • Drawing frames of this type have mainly, in the past, been used for the drafting of synthetic fibres although they have also been used to a certain extent for the drafting of wool.
  • the treatment of these natural fibres has inevitably introduced a certain amount of dirt and it has proved necessary to include rotary brushes for cleaning the faller pins.
  • a drawing frame of the intersecting type as referred to aboveis fitted with a rotary cleaning brush mounted at or close to the front of the path of the fallers of the upper set so as to engage the fallers after they have withdrawn from the sliver being drafted, and a co-operating suction device located adjacent the brush and forwardly of it so as to receive at least a large proportion of the dirt immediately after its removal from the fallers, thus preventing it being carried around the return section of the faller path.
  • the general path of the fallers after leaving the generally horizontal working reach extends more or less vertically to a corner defined by an idler pulley a after which the path slopes at a relatively small angle to the rear of the machine where it passes around a considerably more gradual curve before returning to the working reach.
  • the rotary brush is most effective if located in the region of the corner at the end of the substantially vertical path since the tips of the pins open out while passing round the corner and thus provide more space for the cleaning action of the bristles of the brush.
  • the brush is driven in a direction such that the bristles move from the roots to the tips of the pins, thus sweeping the dirt away from the bodies of the fallers, along the pins and into the suction nozzle.
  • the bristles will, of course, engage the pins over an appreciable arc of movement,but best results are achieved when the cleaning action occurs while the pins are generally horizontal. This is not essential, however, and excellent results are achieved for any angle of the pins between 0° and 45° to the horizontal.
  • the bristles of the cleaning brush move in a direction such as to tend to sweep the dirt away from the bodies of the fallers and along the length of the pins, the fact that the pins are nearly vertical at this point inhibits this effect and much of the dirt removed from the pins becomes embedded in the bristles of the brush so as to cause it to progressively lose its effectiveness.
  • the brush is located to the rear of and above the faller path and of necessity must rotate in the opposite direction to the movement of the fallers, much of the dirt swept clear of the pins and the brush settles back on to the top of the fallers again so as to be conveyed back into the nip formed between the brush and the faliers, hence the brush rapidly becomes completely choked.
  • the gap between adjacent fallers is either very small or non-existent over most of the faller path but it opens out rather more as the fallers pass I around the relatively large curve at the rear of the assembly before the fallers re-enter the working j reach.
  • the brush becomes choked with dirt it acts to press the dirt and fluff resting on the fallers through the tapered spaces between the fallers at this point so as to fill the space enclosed by the faller track and this dirt eventually becomes so compacted as to act as a brake on the moving fallers and place such a strain on the mechanism as to cause it to seize with consequent breakage of parts.
  • the machine comprises an upper faller assembly indicated generally as 1 and a lower faller assembly indicated generally as 2, each defining a closed path including a horizontal working reach 3.
  • the upper assembly 1 runs in a clockwise direction and the lower assembly 2 in an anti-clockwise direction and, after reaching the front of the machine, each assembly moves away along a vertical path 4.
  • the driving pinion and idler pinions are omitted for sake of simplicity, but at the end of each vertical path 4, each assembly passes around a corner 5 and then along a path 6 which slopes back towards the rear of the machine, the fallers passing around a relatively large curve 7 before re-entering the working reach 3.
  • the cleaning brushes have previously always been situated to the rear of the faller assembly, (i.e. the right hand side as seen in the drawings).
  • a rotary cleaning brush 10 is situated at the front of the machine so as to engage the pins at the corner 5 as they move through an angle close to the horizontal to an angle in the region of 45° to the horizontal.
  • the brush is driven to rotate in a clockwise direction so that it sweeps along the tops of the fallers and along the pins from their roots to their tips, throwing out the dirt to the left in a generally horizontal direction so that a large proportion of it is received by a suction hood 11 to the front of the brush, connected to a duct 12.
  • a cleaning brush 15 which rotates in an anti-clockwise direction is shown at the rear of the lower assembly 2.
  • Dirt thrown off the pins and fallers of the assembly by the brush 15 passes to a hopper 16 leading to a suction duct 17.
  • the hopper is positioned forwardly of the brush and extends below a major part of the length of the faller path and beyond so that dirt wiped from the pins will be projected towards.the mouth of the hopper.
  • the extended width of the hopper results in it also catching any dirt falling from the drawing rollers.
  • the remainder of the machine is constructed generally in accordance with normal practice.
  • Sliver to be drafted enters the rear of the machine as indicated by the arrow 20 and passes between a pair of feed rollers 21 to the working reach 3 defined by the intersecting pins of the upper and lower faller assemblies 1 and 2 respectively.
  • the sliver After leaving the working reach 3, the sliver passes to drawing rollers 22, 23 and 24, the last of which, the pressing roller, is engaged by a cleaning roller 25 so as to maintain its surface free of dirt.
  • the sliver then passes to a doubling plate 27 before reaching the delivery rollers (not shown) which are enclosed by a curved cover 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP82302647A 1981-05-27 1982-05-24 Train d'étirage Expired EP0066437B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8116137 1981-05-27
GB8116137 1981-05-27

Publications (2)

Publication Number Publication Date
EP0066437A1 true EP0066437A1 (fr) 1982-12-08
EP0066437B1 EP0066437B1 (fr) 1985-01-16

Family

ID=10522076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82302647A Expired EP0066437B1 (fr) 1981-05-27 1982-05-24 Train d'étirage

Country Status (2)

Country Link
EP (1) EP0066437B1 (fr)
DE (1) DE3261927D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0493336A1 (fr) * 1990-12-21 1992-07-01 SANT'ANDREA NOVARA S.p.A. Dispositif automatique d'élimination d'enroulements de fibres d'une machine d'étirage de mèches de fibres textiles
FR2794138A1 (fr) * 1999-05-26 2000-12-01 Dewavrin Fils Et Cie A Dispositif d'etirage de meches formees de fibres textiles
FR2848576A1 (fr) * 2002-12-17 2004-06-18 Schlumberger Cie N Dispositif de securite et de nettoyage des barettes d'une chenille d'une tete d'etirage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE526518C (de) * 1931-06-06 Alfons Roeder Entstaubungsvorrichtung fuer Bastfaserstrecken
US3534427A (en) * 1968-03-18 1970-10-20 Xerox Corp Cleaning apparatus for electrostatic printing machines
FR2306284A1 (fr) * 1975-04-01 1976-10-29 Cognetex Spa Dispositif automatique pour le nettoyage des brosses d'elimination de fibres textiles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE526518C (de) * 1931-06-06 Alfons Roeder Entstaubungsvorrichtung fuer Bastfaserstrecken
US3534427A (en) * 1968-03-18 1970-10-20 Xerox Corp Cleaning apparatus for electrostatic printing machines
FR2306284A1 (fr) * 1975-04-01 1976-10-29 Cognetex Spa Dispositif automatique pour le nettoyage des brosses d'elimination de fibres textiles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TEXTILE PRAXIS, vol.27, no.10, Oktober 1972 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0493336A1 (fr) * 1990-12-21 1992-07-01 SANT'ANDREA NOVARA S.p.A. Dispositif automatique d'élimination d'enroulements de fibres d'une machine d'étirage de mèches de fibres textiles
FR2794138A1 (fr) * 1999-05-26 2000-12-01 Dewavrin Fils Et Cie A Dispositif d'etirage de meches formees de fibres textiles
FR2848576A1 (fr) * 2002-12-17 2004-06-18 Schlumberger Cie N Dispositif de securite et de nettoyage des barettes d'une chenille d'une tete d'etirage
WO2004065672A1 (fr) * 2002-12-17 2004-08-05 N. Schlumberger (Societe Anonyme) Dispositif de securite et de nettoyage des barrettes d'une chenille d'une tete d'etirage
CN100427656C (zh) * 2002-12-17 2008-10-22 N·施伦贝格尔(公司) 牵引头轨道针梳的保障、清洁设备

Also Published As

Publication number Publication date
DE3261927D1 (en) 1985-02-28
EP0066437B1 (fr) 1985-01-16

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