EP0344631B1 - Verfahren und Vorrichtung zum Herabsetzen der Klebrigkeit von Baumwolle - Google Patents

Verfahren und Vorrichtung zum Herabsetzen der Klebrigkeit von Baumwolle Download PDF

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Publication number
EP0344631B1
EP0344631B1 EP89109496A EP89109496A EP0344631B1 EP 0344631 B1 EP0344631 B1 EP 0344631B1 EP 89109496 A EP89109496 A EP 89109496A EP 89109496 A EP89109496 A EP 89109496A EP 0344631 B1 EP0344631 B1 EP 0344631B1
Authority
EP
European Patent Office
Prior art keywords
rollers
wadding
fiber
roller
heatable
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.)
Expired - Lifetime
Application number
EP89109496A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0344631A1 (de
Inventor
Rene Waeber
Robert Demuth
Fritz Knabenhans
Othmar Bachmann
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Priority to AT89109496T priority Critical patent/ATE74166T1/de
Publication of EP0344631A1 publication Critical patent/EP0344631A1/de
Application granted granted Critical
Publication of EP0344631B1 publication Critical patent/EP0344631B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D01G99/00—Subject matter not provided for in other groups of this subclass
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01B—MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING
    • D01B1/00—Mechanical separation of fibres from plant material, e.g. seeds, leaves, stalks
    • D01B1/10—Separating vegetable fibres from stalks or leaves
    • D01B1/14—Breaking or scutching, e.g. of flax; Decorticating
    • D01B1/30—Details of machines
    • D01B1/40—Arrangements for disposing of non-fibrous materials

Definitions

  • the present invention relates to a method for reducing the stickiness of the fibers of cotton flakes contaminated with honeydew by briefly heating these flakes and to a device for carrying out the method.
  • honeydew sugar-containing excretions from insects. These excretions containing sugar are commonly referred to as honeydew.
  • a laboratory method is known by means of which the honeydew is caramelized by heating cotton flake samples in an oven, with the aim of causing a change in the color of the cotton in order to increase the degree of contamination with honeydew from the change in the color of the cotton flakes determine. This is very important because the cotton flakes become sticky in the event of heavy infestation and tend to stick to different parts of the yarn production system or form wraps on rollers or other rotatable organs, which is very undesirable since it leads to frequent interruptions in the yarn production process .
  • a number of devices for carrying out this method have also been proposed in the aforementioned European patent application.
  • One device aims to heat the fiber flakes as soon as the bale is opened, i.e. right at the beginning of the yarn manufacturing process.
  • Other devices are intended for the treatment of slivers before the stretch.
  • the object of the present invention is therefore to provide a method or a device of the type mentioned at the outset which can be used in any treatment stage of the cotton flakes, i.e. both when ginning, cleaning, before carding and before stretching.
  • the flakes are pressed together to form a fiber mat, that the fiber wadding is then guided over at least 3 and preferably 5 rotating heated rollers which move the fiber wadding and are clamped therebetween, and that the fiber wadding is then again in fiber flakes is dissolved and the flakes are handed over to a next unit which promotes or processes the fiber flakes.
  • the solution according to the invention is characterized by a fiber feeding device, by means of which the fiber flakes are compressed into a fiber wadding and fed in this state to a subsequent number of heatable rollers, and that after the rollers are viewed in the running direction of the fiber wadding, a fiber wadding dissolving and feeding agent is provided which the fiber wadding back in Disintegrates flakes and transfers them to a fiber conveyor.
  • the solution according to the invention is based on the finding that the amount of heat that can be introduced in a fiber wadding in the nip between two heatable rollers or immediately before and after this nip is far greater than the amount of heat that can be introduced into the same cotton , if this cotton is only wrapped around a heated roller. This is not only due to the fact that the fiber wadding is warmed up from both sides in a clamping point, but rather also to the fact that the conductivity of the wadding in the compressed state is higher as a result of the reduction in the amount of air contained in the wadding than in the case of an exposed one side Cotton wool.
  • the best results are obtained if the cotton is compressed to a density of 100-400, preferably about 250 kg / m 3, in the nip of the rollers.
  • a particularly preferred variant of the method according to the invention is characterized in that at least one belt rotating at least two rollers is used to clamp the cotton against at least one further heated roller forming part of the surface with the first-mentioned rollers.
  • the improvement in heat transfer achieved here arises because the length of the nip is artificially increased by the circulating belt.
  • a method in which at least one surface of the cotton is preferred is also particularly preferred the upper one, at least partially, is exposed to allow water vapor to escape during warm-up. If you do not do this and you do not ensure that the vapors generated during the warming-up process can escape, there is a risk that the flakes will remain sticky even after the heat treatment has taken place.
  • the heatable rollers are arranged in a chimney, preferably rising upwards, through which an air flow takes place by means of a fan. In this way, any vapors generated are sucked off or blown away.
  • the chimney itself is preferably located between a flake feed shaft and a disintegrating roller that breaks the cotton into flakes.
  • a disintegrating roller that breaks the cotton into flakes.
  • Fig. 1 shows the lower part of a flake shaft 11, as is usually used in front of a card.
  • a housing 12 At the lower end of the shaft 11 arranged in a housing 12, two draw-off rollers 13 and 14 are arranged, the axis of rotation of the draw-off roller 14 being arranged fixed in space, the axis of rotation of the draw-off roller 13, on the other hand, being adjustable in the direction of the arrow 15 to the desired thickness of the fiber template or Adjust the cotton flakes.
  • a further rotatable roller 16 is provided, which performs a guiding function on the flakes present in the flake shaft 11.
  • the fiber wadding 17 produced by the draw-off rollers 13 and 14 leads immediately after the draw-off rollers 13 and 14 between two pinch-off rollers 18 and 19, which serve to pinch off the flake wadding 17 in the event of an interruption in the production process and thus to prevent the further conveyance of the flakes.
  • the take-off rollers 13 and 14 are stopped during this process.
  • the fiber wadding 17 then continues through an outlet slot 21 at the lower end of the flake shaft housing and via a guide plate 22 to a heatable roller arrangement.
  • This consists of five individual heatable rollers 23 to 27, which are arranged alternately in a row on both sides of the flocked cotton wool. All five rollers are driven so that the fiber wadding is pulled through the rollers becomes. As can be seen in FIG.
  • clamping points 28, 29, 31 and 32 are provided between the five rollers 23 to 27, which preferably have a width of 4 mm or less.
  • the flock cotton has a thickness of about 100 mm on the guide plate 22 before it enters the clamping point 28. There is therefore a 20-25-fold compression of the flocked cotton wool in the clamping gap.
  • a line 43 serves to admit an air flow tangentially in the running direction of the opening roller 41 in order to promote the pneumatic transport of the loosened flakes in the line 42.
  • the opening roller 41 is provided at the lower end of a partition wall 60 forming a side wall of the chimney 38.
  • FIG. 2 shows a modified embodiment of the heatable roller arrangement of FIG. 1, in which a circulating belt 44 wraps around the three rollers 23, 25 and 27 arranged below the flocked cotton wool.
  • the belt is driven at the same speed as the peripheral speed of the rollers 23 to 27, either by the heatable rollers themselves or by a driven deflecting roller 45.
  • Two further deflecting rollers 46 and 47 and a tensioning roller 48 ensure smooth running of the rotating belt or for the desired belt tension.
  • the revolving belt forms "extended" clamping points 49 and 51 between the belt and the upper rollers 24 and 26, respectively.
  • the belt tension is selected so that the cotton in the clamping areas 49 and 51 has a thickness of approximately 4 mm or less.
  • the circulating belt itself is preferably made of metal and is itself heated by the heatable rollers 23, 25 and 27, so that the heat is introduced into the flock floss from both sides.
  • FIG. 3 shows a further possibility of heating a fiber wadding in the clamped state.
  • four revolving heatable rollers 23.1, 24.1, 27.1 and 26.1 are provided.
  • the rotating belt 44 leads over the first roller 23.1, under the roller 24.1, over the roller 27.1 and then over two deflection rollers 45 and 46.
  • a tension roller 48 is also provided here.
  • the flocked cotton wool runs over the guide plate 22 below a static guide 52 through the clamping point 28.1, along a further static guide 53, over the surface of the heated roller 24.1 and in fact under clamping by the circulating belt 44, past the static guide 54, through the Clamping point 32.1 and finally below a further static guide 55 to the guide plate 39.
  • the heated flock floss then arrives at the opening roller 41. With this embodiment, the flock floss is warmed up over a considerable length in the clamped state with only four heatable rollers.
  • the static guides 52 and 55 can also be replaced by rotatable guide rollers 57 and 58, or by a further rotating belt 59, which is guided around the corresponding guide rollers 57, 23.1, 24.1, 27.1, 58 and 26.1.
  • the guide roller 57 or 58 can be provided as a tension roller.
  • the devices described use heatable rollers which are heated up to a temperature of approximately 220.degree.
  • the heating can be done with oil, steam, electricity or any other heat source that is able to deliver the necessary amount of heat in the required time.
  • the flock floss moves through the plant at a speed of between 0.02 m / s and 0.1 m / s.
  • the heating can simply be switched off or the entire device can be bypassed.
  • Fig. 4 shows a variant of the device of Fig. 1 in that between the chimney 38 and the Feeding device 56 is also a cooling zone 70 is provided to cool the heated fiber wadding between two cooling conveyor belts 71 and 72.
  • the cooling zone 70 is separated from the chimney 38 and from the area which contains the feed device 56 by a partition 60.1 and by the partition 73 opposite this.
  • the walls 60.1 and 73 shown in FIG. 4 are also closed off from the two end faces in order to form a closed space.
  • the end walls are provided with air inlet openings (not shown) in order to allow an air flow L to flow in which, for the purpose of cooling the fiber mat located between the cooling conveyor belts 71 and 72, the belts of the abovementioned conveyor belts which are made of meshwork flows through.
  • the air flow L is generated by a suction fan (not shown) which is connected to the connection piece 74.
  • the conveyor belts 71 and 72 are driven synchronously by a single drive (not shown) and convey the fiber wadding at the output speed of the fiber wadding in the nip 32 between the last two heated rollers 26 and 27.
  • Scraper blades 75 are provided on the conveyor belts in order to be able to remove any honeydew deposits. The knives can also be heated to cause the honey dew to caramelize.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
EP89109496A 1988-06-03 1989-05-26 Verfahren und Vorrichtung zum Herabsetzen der Klebrigkeit von Baumwolle Expired - Lifetime EP0344631B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89109496T ATE74166T1 (de) 1988-06-03 1989-05-26 Verfahren und vorrichtung zum herabsetzen der klebrigkeit von baumwolle.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2120/88 1988-06-03
CH212088 1988-06-03

Publications (2)

Publication Number Publication Date
EP0344631A1 EP0344631A1 (de) 1989-12-06
EP0344631B1 true EP0344631B1 (de) 1992-03-25

Family

ID=4226338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89109496A Expired - Lifetime EP0344631B1 (de) 1988-06-03 1989-05-26 Verfahren und Vorrichtung zum Herabsetzen der Klebrigkeit von Baumwolle

Country Status (9)

Country Link
US (2) US4969234A (ko)
EP (1) EP0344631B1 (ko)
JP (1) JPH0226909A (ko)
KR (1) KR920005791B1 (ko)
CN (1) CN1040232A (ko)
AT (1) ATE74166T1 (ko)
DE (2) DE3819882A1 (ko)
IL (1) IL90239A0 (ko)
RU (1) RU1834925C (ko)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL74469A (en) * 1985-02-28 1988-04-29 Shenkar College Textile Tech Treatment of cotton
IL92299A0 (en) * 1989-11-14 1990-07-26 Israel Fiber Inst State Of Isr Process and device for the treatment of cotton
FR2685710B1 (fr) * 1991-12-30 1995-06-23 Cirad Procede de traitement du coton et installation pour l'application du procede.
FR2685709A1 (fr) * 1991-12-30 1993-07-02 Cirad Procede de traitement du coton et installation pour l'application du procede.
FR2691545B1 (fr) * 1992-05-20 1994-07-13 Cirad Procede et installation pour l'evaluation du caractere collant de matieres fibreuses vegetales telles que des cotons et utilisation de ce procede et de cette installation.
IL108743A (en) * 1994-02-22 1998-02-22 Mor Uzi System and method for detection of cotton stickiness and neps and other lint qualities in real time and removal of sticky deposits from processed cotton in the gin
US5504975A (en) * 1996-04-06 1996-04-09 Shenkar College Of Textile Technology & Fashion Method and apparatus for noil reduction in wool combing
US6557214B2 (en) * 2000-02-17 2003-05-06 Akiva Pinto Method and apparatus forming a fiber web
TR200402603T4 (tr) * 2000-05-01 2004-11-22 Xorella Ag Balyaların ısı idaresi için bir yöntem.
ITUB20155249A1 (it) 2015-10-30 2017-04-30 Mesdan Spa Dispositivo di misurazione per la misurazione dell?appiccicosita?, di imperfezioni e impurita? di fibre tessili, in particolare fibre di cotone.
WO2020053470A1 (en) 2018-09-12 2020-03-19 Varo Teollisuuspalvelut Oy Cleaning of a recovery boiler
CN109629012A (zh) * 2019-01-25 2019-04-16 农业农村部南京农业机械化研究所 一种机采籽棉清理装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE175338C (ko) *
GB433091A (en) * 1934-07-25 1935-08-08 Preston Street Combing Co Ltd Improvements in combing machines
DE1133286B (de) * 1959-10-06 1962-07-12 Fritz Hadwich Dipl Ing Verfahren und Vorrichtung zum Ausscheiden von festen und in der Hitze erweichbaren Fremdkoerpern aus einem Faserflor
US3676295A (en) * 1969-09-12 1972-07-11 Industrial Nucleonics Corp Noninteracting control of moisture and fiber content of fibrous sheet during manufacture
NL189363C (nl) * 1977-03-17 1993-03-16 Truetzschler Gmbh & Co Kg Inrichting voor het afnemen en samenvatten van uit een kaarde komend vezelvlies.
US4404710A (en) * 1981-05-29 1983-09-20 Rando Machine Corporation Apparatus for feeding fibers to carding machines and the like
ES516338A0 (es) * 1982-10-07 1983-08-16 Estruch Portell Jose "mejoras en cardas".
IL67002A (en) * 1982-10-15 1986-07-31 Sivan Mifalay Cutna Lemishkay Ginnery cotton drying tower
IL74469A (en) * 1985-02-28 1988-04-29 Shenkar College Textile Tech Treatment of cotton
DE3535684C2 (de) * 1985-10-05 1996-06-05 Truetzschler Gmbh & Co Kg Vorrichtung zur Speisung eines Öffners oder Reinigers für Textilfaserflocken
IT8721377A0 (it) * 1987-07-21 1987-07-21 Edoardo Polli Procedimento ed apparecchiatura per il trattamento di fibre tessili, in particolare di cotone in balle pressate, per la rimozione o riduzione da tali fibre di eventuali residui organici di insetti, ad esse aderenti.

Also Published As

Publication number Publication date
RU1834925C (ru) 1993-08-15
KR920005791B1 (ko) 1992-07-18
US5003670A (en) 1991-04-02
ATE74166T1 (de) 1992-04-15
DE3819882A1 (de) 1989-12-14
JPH0226909A (ja) 1990-01-29
CN1040232A (zh) 1990-03-07
IL90239A0 (en) 1989-12-15
US4969234A (en) 1990-11-13
DE58901017D1 (de) 1992-04-30
EP0344631A1 (de) 1989-12-06
KR900000538A (ko) 1990-01-30

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