EP0959156A2 - Unité d'alimentation et de prétraitement de matériau fibreuse alimenté à une machine textile, en particulier à ouvreuses ou à cardes de type coton - Google Patents

Unité d'alimentation et de prétraitement de matériau fibreuse alimenté à une machine textile, en particulier à ouvreuses ou à cardes de type coton Download PDF

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Publication number
EP0959156A2
EP0959156A2 EP99201533A EP99201533A EP0959156A2 EP 0959156 A2 EP0959156 A2 EP 0959156A2 EP 99201533 A EP99201533 A EP 99201533A EP 99201533 A EP99201533 A EP 99201533A EP 0959156 A2 EP0959156 A2 EP 0959156A2
Authority
EP
European Patent Office
Prior art keywords
clothing
teeth
treating
feeding
unit
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Withdrawn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
EP99201533A
Other languages
German (de)
English (en)
Other versions
EP0959156A3 (fr
Inventor
Mario Mascheretti
Giovanni Battista Pasini
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.)
Marzoli SpA
Original Assignee
Marzoli SpA
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 Marzoli SpA filed Critical Marzoli SpA
Publication of EP0959156A2 publication Critical patent/EP0959156A2/fr
Publication of EP0959156A3 publication Critical patent/EP0959156A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G9/00—Opening or cleaning fibres, e.g. scutching cotton
    • D01G9/06—Opening or cleaning fibres, e.g. scutching cotton by means of toothed members
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/14—Constructional features of carding elements, e.g. for facilitating attachment of card clothing
    • D01G15/20—Feed rollers; Takers-in
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
    • D01G15/88—Card clothing; Manufacture thereof not otherwise provided for formed from metal sheets or strips

Definitions

  • the object of the present invention is a unit for pre-treating and feeding textile material in flakes to a textile machine, particularly to an opener or a cotton carder.
  • the present invention may also be usefully applied in other textile machines for treating flake material.
  • the feed and pre-treatment units for textile machines and in particular for cotton carders comprise one or more feed rollers, known as lickers-in, which cooperate with a feed plate and with a treatment roller.
  • the function of the said elements is uniformly to feed the fibres to be processed in the form of a pad, in addition to that of carrying out a pre-treatment of opening and cleaning the flakes.
  • the fibres in flake form are taken by the feed unit from a condensation tank above, into which they are loaded substantially in bulk.
  • the feed and pre-treatment units of the prior art which are suitable for carrying out these functions belong to two characteristic types.
  • the first type provides to equip the feed roller with a toothed clothing formed by a plurality of parallel toothed annular portions.
  • each tooth follows the path of the tooth which precedes it and always engages the material to be treated at the same point at which the teeth which precede it have engaged it and at which the teeth which follow it will engage it.
  • Each tooth therefore has the same axial coordinate as the tooth which precedes it.
  • the mass of fibres processed by a roller of this kind is fed and pre-treated in a rather irregular manner, it tends to dispose itself randomly along the surface of the roller and has an unsatisfactory degree of opening of the flakes.
  • feed and pre-treatment units in which the toothed clothing develops in spiral form on the feed roller.
  • the cylinders or rollers of the said feed and pre-treatment units which are commonly known as single-start feed cylinders, belong to a second type of feed rollers. Within this second type of rollers, those which are spiral-wound, they differ according to the extent of the angle of engagement or impact of their teeth with the material, or whether the tooth is inclined in the direction of movement or in the opposite direction according to the direction of rotation of the cylinder.
  • Fig. A shows the two possibilities of inclination, with respect to the movement, of the adjacent teeth 1 of a feed cylinder denoted by 2.
  • the cylinder 2 rotates anticlockwise (arrow “F"), it encounters the fibrous material with the surface 7, inclined according to the angle " ⁇ " of engagement or impact with the material which has a value between zero and 90° inclusive.
  • Angle “ ⁇ ” thus varies in the range 0 ⁇ ⁇ ⁇ 90°.
  • the angle “ ⁇ ” is geometrically included between the radial plane 3 and the plane 6 of the engagement surface 7. From the mechanical point of view “ ⁇ ” is an angle external to the tooth in that the phenomena of the impact and the cut are external to the tooth.
  • the plane 3 is the radial plane which contains both the cutting edge 4 (generally cutting edge 4) and the axis of rotation 5 of the feed cylinder 2.
  • the plane 6 is the plane which contains the cutting edge 4 and is tangential to the engagement surface or to the face 7 of the tooth 1.
  • the angle " ⁇ " is the angle of disengagement or withdrawal of the tooth with respect to the material.
  • the angle " ⁇ " is geometrically included between the plane 3 and a plane 8 and has a value in the range 90° ⁇ ⁇ ⁇ 180°.
  • the plane 8 is the plane which includes the cutting edge 4 and is tangential to the back 9 of the tooth 1. From the mechanical point of view (of the phenomenon of disengagement or of withdrawal of the tooth from the fibrous material) the angle " ⁇ " cannot be other than an angle external to the tooth.
  • the clothing described thus far corresponds to a first class of toothing for spiral-wound clothings, the one constituted with the tooth 1 inclined towards the direction of rotary movement F.
  • this class of clothing easily releases the pad of fibres to the points of the next cylinder but does not satisfactorily control the mass of the pad released because it easily slides along the face of the tooth.
  • this second class of clothing tends to retain more greatly and release less easily the pad of fibres to the points of the next cylinder, but it controls the mass of the pad released much better because it is accompanied for a longer period because of the inclination of the face of the tooth.
  • the last clothing described above corresponds to the second class of toothing, the one in which the tooth 1 is inclined in the direction opposite to the direction of the rotary movement G.
  • the object of the present invention is therefore to improve the characteristics of the feed and pre-treatment unit, so as to overcome or reduce the disadvantages of the prior art, or a feed and pre-treatment unit capable of producing a constant feed of a pad which is uniform and formed of flakes which have already been efficiently opened and cleaned in the pre-treatment.
  • the subsequent carding is carried out starting with a semi-processed product in the form of a pad which already has satisfactory textile properties or has a count which is substantially constant and an appreciable degree of opening of the fibres.
  • the contemporaneous presence on the same feed cylinder of two parallel helical clothings having, alternately, one with teeth inclined in the same direction as the rotation of the cylinder and the other with teeth inclined in the direction opposite to the rotation of the cylinder, or, respectively, one having angles of engagement substantially between 0 and 90° inclusive and the other substantially greater than 90°, permits a substantial improvement in the quality of the pad obtained.
  • the part of the helical clothing provided with teeth having an angle of impact greater than 90° is less aggressive and exerts a limited take-up and stretching action on the fibres, but permits a potentially homogeneous distribution of the said fibres on the work surface of the cylinder, promoted by the helical structure of both the clothings.
  • the helical clothing provided with teeth having an angle of impact between zero and 90° inclusive is more aggressive and exerts a holding action of the fibres which is sufficiently forceful with respect to the feed plate, promoting the opening and preliminary cleaning of the fibres in flake form.
  • the geometrical properties of the teeth of the clothings contribute to an increase in the efficiency of the embodiments of the invention in view of other operating parameters such as: quality and nature of the raw material to be treated (cotton or wool for example), temperature and ambient humidity.
  • Figure A is a partial view of a known feed cylinder to illustrate the structural parameters of a toothed clothing.
  • Figure 1 is a diagrammatic sectional view of the entire feed and pre-treatment unit 10 according to the invention with the subsequent treatment roller 13, which in the specific case is shown as an opener roller with straight teeth but may also be a carder cylinder.
  • Figure 2 shows a detail of the feed unit 11 according to the invention with the clothing formed with teeth 18 and 19 of alternate inclination.
  • the feed and pre-treatment unit 10 essentially comprises, in the path of the fibres to be treated, a feed cylinder 11, a feed plate 12 and an opener roller 13. They are operated conventionally with motors which are not shown herein for reasons of simplicity.
  • the feed cylinder 11 essentially comprises a cylindrical body 14 equipped with support pins 16 in rotation and the lateral surface 17 is equipped with two alternating spiral wrappings, one according to a first clothing 18 with teeth inclined in one direction and a second clothing 19 with teeth inclined in the opposite direction.
  • Both clothings have helical development and are disposed adjacently so that the respective starts are separate. They may be alternated according to a one to one, two to one, two to two etc. arrangement, notwithstanding the criterion of having - in the case of rotation according to arrow F - adjacent spirals of teeth 24 which are more aggressive, to take up and stretch the fibrous material, and teeth 25 which are less aggressive and promote the distribution of the material over the entire surface of the cylinder and supply a pad which is more regular and well distributed.
  • the angle of impact ⁇ 1 of the teeth 24 of the toothing of the first clothing 18 is 0° ⁇ ⁇ 1 ⁇ 90°
  • the angle of impact ⁇ 2 of the teeth 25 of the toothing of the second clothing 19 is 90° ⁇ ⁇ 2 ⁇ 180°.
  • the angle of withdrawal of the first teeth 24 has been denoted by ⁇ 1 while the angle of withdrawal of the second teeth 25 has been denoted by ⁇ 2 .
  • the angles ⁇ 1 and ⁇ 2 are, respectively, the angles of engagement of the teeth 24 and 25 respectively of the first and the second clothing and the angles ⁇ 2 and ⁇ 1 are the withdrawal angles.
  • angles ⁇ 2 and ⁇ 1 are, respectively, the angles of engagement of the teeth 25 and 24 of the second 19 and of the first 18 clothing and the angles ⁇ 1 and ⁇ 2 are the withdrawal angles.
  • the clothings may be produced preferably from identical toothed belts coupled and alternated with opposing inclinations and then by applying them by wrapping and fixing to the base cylinder 11, by welding or brazing for example.
  • the teeth 24 of the first toothed clothing 18 are specularly identical to the teeth 25 of the second toothed clothing 19 which alternate in spiral manner.
  • the pitch 26 of the teeth 24 of the first type of clothing 18 is thus -also equal to the pitch 26A of the teeth 25 of the second type of clothing 19.
  • Fig. 2 shows an illustration of an embodiment in which, in order to increase the processing efficiency, the teeth 24 of the first clothing wrapping 18 and the teeth 25 of the second clothing wrapping 19 are disposed on the surface 17 of the feed cylinder 11 reciprocally staggered by half the value of their pitch 26, 26A. Different arrangements with different pitches are, however, possible.
  • the pitch 26, 26A is between 4 and 7 mm inclusive, preferably between 4.5 and 6 mm.
  • the distance between the adjacent wrappings 18, 19 is kept in excess of the pitch 26, 26A existing between the teeth 24 and 25 of the said clothings 18 and 19.
  • this distance between the alternate and adjacent wrappings of the first (18) and the second (19) clothing is between 1 and 20 mm inclusive and preferably between 3 and 8 mm.
  • the clothings 18, 19 have a helical development in agreement with the intended direction of rotation of the feed cylinder 11 and are applied to the surface 17 of the feed cylinder 11 in per se known manner. By way of indication they may be applied with forced insertion of the clothing in a thread of the cylinder with a groove of the dimension of the shape of the clothing, or by simple spiral wrapping and subsequent welding or braze welding.
  • the feed plate 12 comprises a first portion 20 of concave frontal surface facing the working surface 17 of the feed cylinder 11 and a second portion 22 of frontal surface tangential to the treatment carder roller 13.
  • the treatment roller 13 is equipped with needles 23 distributed in four lines disposed at 90° along the lateral surface of the roller.
  • the needles 23 cooperate both with the teeth 24, 25 of the feed cylinder 11 and with the second portion 22 of frontal surface of the feed plate 12.
  • the fibrous material in flake form is taken by the feed unit 10 from a condensation tank 27 above, into which the fibres are loaded in bulk.
  • the material slides downwards due to the action applied by the feed cylinder 11 which rotates anticlockwise and processes it with the collaboration of the first portion 20 of the frontal surface of the feed plate 12.
  • the needles 23 of the treatment roller 13 take the material from the teeth 24 and 25 of the clothing of the cylinder 11 and process it with the collaboration of the second portion 22 of the frontal surface of the feed plate 12.
  • the treatment roller preferably rotates anticlockwise.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP99201533A 1998-05-19 1999-05-14 Unité d'alimentation et de prétraitement de matériau fibreuse alimenté à une machine textile, en particulier à ouvreuses ou à cardes de type coton Withdrawn EP0959156A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI981097 1998-05-19
ITMI981097 IT1299586B1 (it) 1998-05-19 1998-05-19 Gruppo di alimentazione e pretrattamento del materiale fibroso alimentato ad una macchina tessile, in particolare per apritoi o

Publications (2)

Publication Number Publication Date
EP0959156A2 true EP0959156A2 (fr) 1999-11-24
EP0959156A3 EP0959156A3 (fr) 2001-03-14

Family

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EP99201533A Withdrawn EP0959156A3 (fr) 1998-05-19 1999-05-14 Unité d'alimentation et de prétraitement de matériau fibreuse alimenté à une machine textile, en particulier à ouvreuses ou à cardes de type coton

Country Status (2)

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EP (1) EP0959156A3 (fr)
IT (1) IT1299586B1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2174566C1 (ru) * 2000-11-02 2001-10-10 Открытое акционерное общество "Научно-исследовательский институт нетканых материалов" Устройство предварительной обработки волокнистой массы и питания последующих машин
EP1236817A1 (fr) * 2001-02-20 2002-09-04 Maschinenfabrik Rieter Ag Dispositif d'ouverture et de nettoyage de matière fibreuse
EP1529859A3 (fr) * 2003-11-06 2006-04-05 Rieter CZ a.s. Alimentation de textiles ou matériaux similaires aux éléments de travail d'un dispositif pour production de fibres
WO2006094419A1 (fr) * 2005-03-07 2006-09-14 Maschinenfabrik Rieter Ag Cylindre d'ouvreuse et hotte d'alimentation pour une carde
WO2007048262A3 (fr) * 2005-10-28 2008-01-31 Rieter Ag Maschf Cylindre d'ouverture et puits de remplissage pour machine a carder
CN101899727A (zh) * 2010-06-28 2010-12-01 中国农业大学 剔除异性纤维的棉花开松辊
CH704510A1 (de) * 2011-02-18 2012-08-31 Graf & Co Ag Ganzstahlgarnitur.
CN108796667A (zh) * 2018-08-10 2018-11-13 纵瑞东 一种精细弹花机三组罗拉喂花装置
CN112301467A (zh) * 2020-11-04 2021-02-02 魏文杰 一种可清理棉絮的开棉纺织机械

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1060164A (en) * 1963-08-23 1967-03-01 Toyo Rayon Co Ltd Carding engines and the production of fibre webs
DE2062210A1 (de) * 1970-12-17 1972-06-22 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Walze für Kardiermaschinen
US4090276A (en) * 1971-12-28 1978-05-23 Glen Walton Company Limited Textile carding
DE3528853C2 (de) * 1985-02-11 1987-02-12 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung zum Beschicken einer Karde oder Krempel mittels zweier Füllschächte
US4643367A (en) * 1985-05-10 1987-02-17 John D. Hollingsworth On Wheels, Inc. Card wire winding tool and method
US5655262A (en) * 1994-11-03 1997-08-12 Mtm-Modern Textile Machines Ltd. Apparatus for cleaning fibers
DE19509743A1 (de) * 1995-03-17 1996-09-19 Fritz Stahlecker Garnitur für eine Auflösewalze

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2174566C1 (ru) * 2000-11-02 2001-10-10 Открытое акционерное общество "Научно-исследовательский институт нетканых материалов" Устройство предварительной обработки волокнистой массы и питания последующих машин
EP1236817A1 (fr) * 2001-02-20 2002-09-04 Maschinenfabrik Rieter Ag Dispositif d'ouverture et de nettoyage de matière fibreuse
EP1529859A3 (fr) * 2003-11-06 2006-04-05 Rieter CZ a.s. Alimentation de textiles ou matériaux similaires aux éléments de travail d'un dispositif pour production de fibres
WO2006094419A1 (fr) * 2005-03-07 2006-09-14 Maschinenfabrik Rieter Ag Cylindre d'ouvreuse et hotte d'alimentation pour une carde
WO2007048262A3 (fr) * 2005-10-28 2008-01-31 Rieter Ag Maschf Cylindre d'ouverture et puits de remplissage pour machine a carder
CN101899727A (zh) * 2010-06-28 2010-12-01 中国农业大学 剔除异性纤维的棉花开松辊
CH704510A1 (de) * 2011-02-18 2012-08-31 Graf & Co Ag Ganzstahlgarnitur.
CN108796667A (zh) * 2018-08-10 2018-11-13 纵瑞东 一种精细弹花机三组罗拉喂花装置
CN112301467A (zh) * 2020-11-04 2021-02-02 魏文杰 一种可清理棉絮的开棉纺织机械

Also Published As

Publication number Publication date
ITMI981097A1 (it) 1999-11-19
EP0959156A3 (fr) 2001-03-14
IT1299586B1 (it) 2000-03-16

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