EP2998036B1 - Procédé et appareil de classification de bobine selon la rigidité d'un enroulement de fil - Google Patents

Procédé et appareil de classification de bobine selon la rigidité d'un enroulement de fil Download PDF

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Publication number
EP2998036B1
EP2998036B1 EP15177641.6A EP15177641A EP2998036B1 EP 2998036 B1 EP2998036 B1 EP 2998036B1 EP 15177641 A EP15177641 A EP 15177641A EP 2998036 B1 EP2998036 B1 EP 2998036B1
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EP
European Patent Office
Prior art keywords
package
air
tube
stiffness
yarn
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.)
Not-in-force
Application number
EP15177641.6A
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German (de)
English (en)
Other versions
EP2998036A1 (fr
Inventor
Karel Adamek
Petr Skop
Pavel Kloucek
Norbert Pomp
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.)
Clutex - Klastr Technicke Textilie Zs
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Clutex - Klastr Technicke Textilie ZS
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Publication of EP2998036A1 publication Critical patent/EP2998036A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/04—Carriers or supports for textile materials to be treated
    • D06B23/042—Perforated supports

Definitions

  • An apparatus for detecting the permeability of a yarn package on a tube provided with a plurality of radial through holes for classification of bobbins according to the stiffness of a yarn package determined by permeability of the package.
  • Dyeing yarns and similar linear textile formations is generally carried out on a wound bobbin by forcing dye liquor through a layer of yarn.
  • a dyeing apparatus comprises a vessel connected to the supply of dye liquor from a storage reservoir and for discharging the dye back to the reservoir.
  • Wound bobbins in the vessel are mounted on shanks which are composed of perforated pipes and are closed at one end, whereby the inlets to these perforated pipes are connected to the dye supply.
  • the tubes of the bobbins are also perforated and so the dye supplied under pressure enters through the cylindrical surface of the tube into the volume of the yarn package and, having passed through the package, it returns to the storage reservoir.
  • Such an apparatus is known, for example, from the document US 5351351 .
  • the aim of the dyeing process of the yarn package is achieving uniform colour shade of all the wound yarn for all the bobbins of the entire dyed batch. Owing to the fact that the stiffness of individual yarn packages may vary, which may be caused, for example, by the yarn being unevenly tightened during winding, the yarn may be dyed unevenly. Naturally, this also unfavourably influences the appearance of the textile product, for example a knitted textile, a fabric and others, which are produced from such yarn.
  • the known solutions are based, for example, on measuring the resistance to the deformation of the package. This is performed by measuring the resistance forces acting during the penetration of a needle into a layer of the package, or during turning a flat needle in a layer of the package. Other solutions derive benefit from measuring the reflection of testing weight falling on the package surface.
  • the goal of the invention is to shorten the time which is necessary for determining the stiffness of the yarn package and increase considerably the objectivity of the evaluation of the measured data.
  • the aim of the invention has been achieved by a method for classification of bobbins according to the stiffness of a yarn package arranged on a tube for dyeing, whose principle consists in that the bobbins are sorted into groups according to the permeability of the package. This criterion is very close to the actual process of dyeing packages.
  • the permeability is determined by measuring the hydraulic gradient on a layer of a package at a specific constant air flow rate, or the permeability is determined by measuring air flow rate through a layer of the package at a specified constant hydraulic gradient on the layer of the package. From the point of view of the results of testing, both methods are virtually equal and selecting one method depends on the availability of the testing means and/or possible unique features of the packages being dyed, the type of dye or the testing frequency.
  • the overpressure of the air supplied into the inner space of the tube with close ends in comparison with the ambient atmospheric pressure is measured.
  • the direction of the hydraulic gradient which corresponds to the passage of the dye through the package during the process of dyeing.
  • the goal of the invention has also been achieved by an apparatus for detecting the permeability of a yarn package, which is arranged on a tube provided with a plurality of radial through holes, whose principle consists in that the ends of the tube are closed and the inner space is interconnected with a source of compressed air, whereby a flow meter is arranged in the inlet piping leading into the inner space and a pressure gauge is connected to the outlet piping of compressed air.
  • the advantage of the solution according to the invention is relative simplicity of its implementation, obtaining reproducible and reliable results, availability of the means which constitute the testing apparatus, as well as the fact that it is possible to store the measured values so that they can be retrieved for the purpose of finding the reason of altered stiffness of the package or its colouring.
  • Fig.1 shows a flow chart of a pneumatic circuit
  • Fig. 2 shows the course of mutual dependence of the air flow (Q) through the package (axis y) and the hydraulic gradient (P) of the air in the package being measured (axis x)
  • Fig. 3 shows the development of the flow lines in the longitudinal section of the package volume.
  • the apparatus for detecting the permeability of the yarn package according to the invention is based on a principle which physically corresponds to a method of dyeing yarn carried out during its production.
  • the permeability of the package is determined by its stiffness resulting from the tightening of separate turns during winding the bobbin. During dyeing the dyeing liquor is forced through a layer of the package so as to achieve uniform colour shade of the yarn. Measuring the package stiffness and, accordingly, its permeability is therefore carried out by forcing the liquor through analogically with the actual process of dyeing.
  • the testing medium is gas, preferably air.
  • a permeable package 41 of yarn puts up a resistance to the passage of the air which is characterized by hydraulic gradient P, i.e. by the difference between the pressure before the entry of the air into the layer of the package 41 and the pressure of the air behind the layer of the package 41.
  • the hydraulic gradient P grows with the stiffness of the package 41 and the flow rate Q of the air being forced through.
  • the package 41 permeability is a fundamental parameter which defines the stiffness of the package 41. The reason why a gas medium is used is the fact that this measurement allows to compare only relative stiffness, that is the total mean permeability of separate packages 41 being tested, not the absolute value of permeability, and the material is not anyhow damaged by it.
  • a source 1 of compressed air is used with a flow meter 2 preferably arranged in the outlet branch pipe of the source 1 of compressed air. Behind the flow meter 2, to this branch pipe is connected a flow meter 3 measuring the pressure P 0 of the air before the bobbin 4 with the package 41 of yarn being measured, which constitutes in principle overpressure in relation to the ambient atmospheric pressure.
  • the package 41 is arranged on a tube 42, which is for the purpose of dyeing yarn provided along its length by a plurality of regularly divided radial through holes 421. At one end 43 the tube 42 is closed for the measurement purpose. At the other end 44 an inlet orifice 45 of the compressed air supply is arranged for the measurement purpose.
  • the value of the hydraulic gradient P on the package 41 layer is virtually identical to the inlet pressure P 0 of the supplied air.
  • the source 1 of compressed air is provided with a means of adjusting the amount of the flow Q of the supplied air.
  • the source 1 of compressed air can be also a low-pressure blower, or the outlet of an unillustrated central distribution system of compressed air provided with a means for flow rate regulation. If a separate source 1 of compressed air is used, the flow meter can be arranged in its suction system. This, however, has a negative influence on the conditions in the suction of the source 1 of compressed air.
  • the source 1 of compressed air delivers a constant amount of the air, or the source 1 of compressed air is coupled to a sufficiently precise known regulator of the pressure (not shown).
  • Fig. 2 shows a diagram of mutual dependence of the air flow Q in m 3 /h through the layer of the package 41 and the hydraulic gradient P in kPa.
  • the detecting of the stiffness of yarn packages 41 is carried out by measuring the flow rate Q of the air by a flow meter 2 at a constant pre-set hydraulic gradient P 1 on a layer of the package measured by a pressure gauge 3.
  • a specified hydraulic gradient P 1 is obtained after adjusting the source 1 to flow rate Q 1
  • another bobbin 4 the same hydraulic gradient P 1 is obtained after adjusting the source 1 to flow rate Q 2 .
  • a soft package 41 is characterized by a higher flow rate Q 1
  • a stiff package 41 is characterized by a lower flow rate Q 2 .
  • detecting the stiffness of yarn packages 41 is carried out by measuring the hydraulic gradient P by the pressure gauge 3 at a constant pre-set flow rate Q 1 of the air controlled by the flow meter 2.
  • a stiff package 41 is characterized by a higher hydraulic gradient P 2
  • a soft package 41 is characterized by a lower hydraulic gradient P 1 .
  • Handling bobbins closing the tubes 42 by means of a sealing stopper at the end 43 and a stopper with the supply of compressed air at the end 44, can be easily automated.
  • By means of appropriate converters it is also possible to store the measured values of the hydraulic gradient P and the flow amount Q of the air so as to retrieve the causes of altered stiffness of the package or the colouring.
  • the outcome of the numeric simulation is also the fact that even bobbins having identical average permeability detected by the method described above have a different intensity of air flow rate in different sections of the package volume, that is in the side, along the circumference, or in the area transition from the side to the circumference and, therefore, theoretically they also have a different degree of local colouring.
  • this drawback can be effectively reduced by diversifying directions of the dye liquor flowing to the mass of the package and vice versa. It is apparent that so as to achieve proper colouring of the entire volume, it is also necessary to maintain a certain minimum period of dyeing so that all the sections in the package could be saturated with dye. If bobbins of one colour batch are sorted into groups according to a particular range of permeability, the period of the dyeing of stiffer bobbins will be longer than that of softer bobbins.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (5)

  1. Procédé de classification des bobines (4) selon la rigidité de l'enroulement (41) du fil posé sur le tube (42) pour la coloration, muni d'une pluralité de trous traversants radiaux (421), tandis que les bobines (4) sont groupées en fonction de la rigidité de l'enroulement (41) du fil déterminée par la perméabilité de l'enroulement (41).
  2. Procédé selon la revendication 1, caractérisé en ce que la perméabilité est déterminée par le mesurement du gradient de pression (P) sur la couche de l'enroulement (41) pendant le débit d'air constant déterminé (Q).
  3. Procédé selon la revendication 1, caractérisé en ce que la perméabilité est déterminée par le mesurement du débit d'air (Q) à travers la couche de l'enroulement (41) pendant le gradient de pression constant déterminé (P) d'air sur la couche de l'enroulement.
  4. Procédé selon la revendication 2 ou 3, caractérisé en ce que pour savoir le gradient de pression (P) sur la couche de l'enroulement (41) il faut mesurer la surpression (PO) de l'air fournie à l'espace intérieur du tube (42) à faces fermées (43, 44) contre la pression atmosphérique dans le voisinage.
  5. Dispositif pour détecter la perméabilité de l'enroulement de fil (41) qui est posé sur le tube (42) muni d'une pluralité de trous radiaux traversants (421) pour classification les bobines (4) en fonction de la rigidité de l'enroulement du fil (41)déterminée par la perméabilité de l'enroulement (41) par le procédé selon la revendication 1, tandis que les avants (43, 44) du tube (42) sont fermés et l'espace intérieur du tube (42) est relié à la source d'air sous pression (1), tandis que dans le tuyau d'alimentation pour l'espace intérieur du tube (42) est installé le débitmètre (2) et au tuyau de sortie de la source d'air sous pression (1) est attaché le manomètre (3).
EP15177641.6A 2014-08-19 2015-07-21 Procédé et appareil de classification de bobine selon la rigidité d'un enroulement de fil Not-in-force EP2998036B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ2014-555A CZ2014555A3 (cs) 2014-08-19 2014-08-19 Způsob třídění cívek podle tuhosti návinu příze a zařízení k zjišťování prodyšnosti návinu příze

Publications (2)

Publication Number Publication Date
EP2998036A1 EP2998036A1 (fr) 2016-03-23
EP2998036B1 true EP2998036B1 (fr) 2018-01-31

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Application Number Title Priority Date Filing Date
EP15177641.6A Not-in-force EP2998036B1 (fr) 2014-08-19 2015-07-21 Procédé et appareil de classification de bobine selon la rigidité d'un enroulement de fil

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EP (1) EP2998036B1 (fr)
CZ (1) CZ2014555A3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110398451A (zh) * 2019-08-21 2019-11-01 安徽华茂织染有限公司 经轴染色渗透检测装置
CN114925986B (zh) * 2022-04-28 2024-04-05 无锡物联网创新中心有限公司 一种管纱分类与跟踪方法及相关装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT404720B (de) * 1988-01-23 1999-02-25 Becker Josef Verfahren und färbehülse zum gleichmässigen verdichten von garn
JPH0778307B2 (ja) * 1992-06-09 1995-08-23 大阪ボビン株式会社 チーズ染色法
US5411217A (en) * 1993-08-31 1995-05-02 Osaka Bobbin Co., Ltd. Compressible bobbin for yarn treatment
GB2314590A (en) * 1996-06-27 1998-01-07 Falmer Investment Ltd Pump
WO2014075249A1 (fr) * 2012-11-14 2014-05-22 立信染整机械(深圳)有限公司 Nouvelle machine de teinture sur bobine fromage unidirectionnelle

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Publication number Publication date
CZ304933B6 (cs) 2015-01-28
EP2998036A1 (fr) 2016-03-23
CZ2014555A3 (cs) 2015-01-28

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