EP2313546A1 - High-speed wire coating device and method - Google Patents

High-speed wire coating device and method

Info

Publication number
EP2313546A1
EP2313546A1 EP09753907A EP09753907A EP2313546A1 EP 2313546 A1 EP2313546 A1 EP 2313546A1 EP 09753907 A EP09753907 A EP 09753907A EP 09753907 A EP09753907 A EP 09753907A EP 2313546 A1 EP2313546 A1 EP 2313546A1
Authority
EP
European Patent Office
Prior art keywords
wire
liquid
treatment
speed
outlet
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
EP09753907A
Other languages
German (de)
French (fr)
Other versions
EP2313546B1 (en
Inventor
Henri Hinc
Guy Chevrel
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.)
Compagnie Generale des Etablissements Michelin SCA
Michelin Recherche et Technique SA France
Original Assignee
Michelin Recherche et Technique SA Switzerland
Michelin Recherche et Technique SA France
Societe de Technologie Michelin SAS
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 Michelin Recherche et Technique SA Switzerland, Michelin Recherche et Technique SA France, Societe de Technologie Michelin SAS filed Critical Michelin Recherche et Technique SA Switzerland
Publication of EP2313546A1 publication Critical patent/EP2313546A1/en
Application granted granted Critical
Publication of EP2313546B1 publication Critical patent/EP2313546B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • D06B23/24—Means for regulating the amount of treating material picked up by the textile material during its treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
    • B05C3/12—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
    • B05C3/12—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length
    • B05C3/125—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length the work being a web, band, strip or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
    • B05C3/12—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length
    • B05C3/132—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length supported on conveying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/20—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wires
    • 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
    • D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
    • 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
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/04—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of yarns, threads or filaments
    • D06B3/06—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of yarns, threads or filaments individually handled
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • D07B7/14—Machine details; Auxiliary devices for coating or wrapping ropes, cables, or component strands thereof
    • D07B7/145—Coating or filling-up interstices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2256/00—Wires or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0606—Reinforcing cords for rubber or plastic articles
    • D07B1/0666—Reinforcing cords for rubber or plastic articles the wires being characterised by an anti-corrosive or adhesion promoting coating
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2001—Wires or filaments
    • D07B2201/201—Wires or filaments characterised by a coating
    • D07B2201/2012—Wires or filaments characterised by a coating comprising polymers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2207/00—Rope or cable making machines
    • D07B2207/40—Machine components
    • D07B2207/404—Heat treating devices; Corresponding methods
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2046—Tire cords

Definitions

  • the invention relates to the field of manufacture of cables and son, and more particularly the step during which a surface treatment of these son is carried out.
  • wire In the context of the present description, the term wire must be understood in a completely general sense, encompassing a mono filament, a multi filament, a cord or a plied or an equivalent assembly, and this, whatever the material, textile or metallic, constituting the wire.
  • the invention is concerned with treatments in which, during a first step, is deposited on the surface of the wire a thin layer of a treatment product in liquid form.
  • This treatment product may for example be formed of a solvent and an active solute or a product capable of polymerizing.
  • the next treatment step is then to extract the solvent, so as to leave only the active product on the surface of the wire or let the polymerization reaction finish, or to achieve a combination of these two actions.
  • Particular attention must then be paid to the precise amount of liquid deposit present on the surface of the wire. It is important to ensure that the liquid layer deposited, and generally thin, is as regular as possible to ensure the regularity of the treatment and the properties of the wire along its length.
  • the known techniques of wetting or coating consist in circulating the wire in a bath containing the treatment liquid that is desired to deposit. By soaking in the bath, the yarn impregnates the liquid solution and then leaves in the direction of the treatment step during which the drying or the polymerization is carried out.
  • the invention aims to provide a solution to this problem.
  • the device for depositing a treatment product on the surface of a continuous yarn comprises: means for impregnating by dipping the yarn in a bath intended to contain a solution of the treatment product under liquid form, and wherein the wire flows when the device is in operation, dewatering means, placed downstream of the impregnation means, able to remove excess liquid carried by the wire, treatment means arranged downstream of the dewatering means, able to pass the liquid solution remaining on the solid phase wire, means capable of guiding and circulating the wire from the input to the output of the device in a direction df and a speed V f
  • This device is characterized in that the dewatering means comprise means capable of projecting said treatment liquid at a regulated speed and appropriately, towards the wire in the form of convergent jets and in directions, the direction makes an obtuse angle ⁇ with the direction of flow of said wire, so as to adjust the thickness e of liquid remaining on the wire output of said dewatering means.
  • the jets thus project the liquid on the wire at a speed whose component is in the same direction as the wire but in the opposite direction to the direction of progression of the wire, and which has the effect of scraping the excess liquid entrained by thread.
  • the device serving as a support for the present description comprises impregnation means 2, dewatering means 3 of the processing means and means embodied by return pulleys, able to circulate a wire 10 from the inlet (51) to the outlet (54) of the device, between and inside the impregnation means (52, 53).
  • the impregnating means 2 are formed, for example, of a tank 25 containing a treatment liquid.
  • This treatment liquid may be a solute diluted in a solvent or an organic compound capable of polymerizing under the action of heat or a source of energy such as laser or UV radiation.
  • the continuous wire 10 is driven into the tray 25 by drive means (not visualized) such as a motorized pulley, from a wire source (not shown).
  • the wire moves in the processing device at a speed Vf.
  • the wire can be repacked for a subsequent production step, or directly integrated with the material to be reinforced.
  • the wire 10 is impregnated with the treatment liquid 20 which also forms a layer 23 over the entire surface of the wire. It will be observed, as already mentioned above, that the wire acts as a pump, and that the quantity of treatment liquid carried by the wire increases as the circulation velocity V f increases. Also, when one seeks to increase the speed Vf for obvious reasons of productivity, the amount of liquid deposited on the wire increases, and there is an imperative need to regulate the thickness e liquid (see locket).
  • the dewatering means are formed of a central channel 34 through which the wire 10 flows at the speed V f , in a direction and a direction d f , corresponding substantially to the longitudinal direction of the channel 34.
  • the means Spin 3 may advantageously be oriented so that the direction of flow f of the wire is directed vertically from bottom to top.
  • the dewatering means 3 also comprise an inlet 31 through which the pressurized treatment liquid 20 enters a chamber 32.
  • the treatment liquid is expelled by nozzles 33 in the form of jets 21 converging toward the wire 10 at a speed V j .
  • the jets are oriented so that the direction d, of projection of the liquid on the wire makes an obtuse angle ⁇ with the direction d f of circulation of the wire.
  • the collision of the jets 21 on the surface of the wire 10 has the effect of ejecting the excess liquid in the form of splash 22, which can be recovered in a suitably shaped container.
  • the wall 26 of the tank 25 can be raised to ensure that these surplus treatment liquid drops back into the tank 25 by simple gravity.
  • a recirculation pump 27 sucks the treatment liquid through a conduit 28 to supply the chamber 32 under pressure.
  • the internal walls 33 a, 33 b are in the form of nested cones sections, the axis substantially corresponding to the channel axis 34, and whose generatrices form an external angle equal to the angle ⁇ .
  • the processing means 4 Downstream of the dewatering means 3 are arranged the processing means 4 which are intended to fix the treatment liquid and to pass said liquid from the liquid phase in solid or plastic phase.
  • These means may, by way of example, include heating means for evaporating the solvent from the treatment liquid or starting a polymerization reaction which will freezing the treatment product on the surface of the wire 10.
  • This reaction can also be generated by other means such as induction heating means, UV radiation or laser radiation or any other means capable of adhering the products of treatment contained in the treatment liquid on the surface of the wire.
  • One of the interesting features of the device according to the invention is that it is possible to circulate the wire from the outlet of the impregnation means 2 materialized by the line AA, until the output of the materialized processing means 4 by the line BB without the wire comes into contact with the walls of the channel 34, or with a return pulley belonging to the guide system.
  • the wire flows freely between the return pulleys 53 and 54.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

Device for continuously depositing a treatment substance (20) on the surface of a wire (10), comprising: impregnation means (2) for impregnating by dipping the wire into a bath intended to contain a solution of the treatment substance in liquid form (20), through which bath the wire runs when the device is in operation; draining means (3) placed downstream of the impregnation means (2), capable of removing the excess liquid (22) entrained by the wire; treatment means (4) placed downstream of the draining means (3), capable of making the liquid solution remaining on the wire solidified; and means (51, 52, 53, 54) for guiding and running the wire from the inlet to the outlet of the device along a direction df at a speed Vf, characterized in that the draining means (3) include means capable of spraying said treatment liquid at an appropriately regulated speed Vj towards the wire (10) in the form of jets (21) that converge in all directions dj making an obtuse angle α with the direction df in which said wire runs, so as to adjust the thickness e of liquid remaining on the wire on leaving said draining means (3).

Description

DISPOSITIF ET PROCEDE D'ENDUCTION D'UN FIL A GRANDE VITESSE DEVICE AND METHOD FOR COATING A HIGH SPEED WIRE
[001] L'invention concerne le domaine de fabrication des câbles et fils, et plus particulièrement l'étape au cours de laquelle on réalise un traitement de surface de ces fils.[001] The invention relates to the field of manufacture of cables and son, and more particularly the step during which a surface treatment of these son is carried out.
[002] II s'avère en effet utile, dans de nombreux procédés, de déposer à la surface du fil une couche d'épaisseur maîtrisée d'un produit donné, de manière à faciliter la mise en œuvre du fil dans une étape ultérieure de fabrication.It is indeed useful, in many processes, to deposit on the surface of the wire a layer of controlled thickness of a given product, so as to facilitate the implementation of the wire in a subsequent step of manufacturing.
[003] C'est le cas par exemple, lorsque l'on désire utiliser le fil comme fibre de renfort d'un matériau plastique. Il est alors nécessaire de traiter le fil pour lui permettre d'adhérer parfaitement avec la matrice du matériau, en déposant un produit de liaison sur la surface du fil en question, de manière à rendre la coopération entre ces deux composants la plus efficace possible. Ces applications sont couramment mises en oeuvre dans l'industrie du pneumatique ou encore dans l'industrie des plastiques renforcés.[003] This is the case for example, when it is desired to use the wire as a reinforcing fiber of a plastic material. It is then necessary to treat the wire to allow it to adhere perfectly to the matrix of the material, by depositing a bonding product on the surface of the wire in question, so as to make the cooperation between these two components as effective as possible. These applications are commonly used in the tire industry or in the reinforced plastics industry.
[004] Dans le cadre de la présente description, le terme fil doit être compris dans un sens tout à fait général, englobant un mono filament, un multi filament, un câblé ou un retors ou un assemblage équivalent, et ceci, quelle que soit la matière, textile ou métallique, constituant le fil.[004] In the context of the present description, the term wire must be understood in a completely general sense, encompassing a mono filament, a multi filament, a cord or a plied or an equivalent assembly, and this, whatever the material, textile or metallic, constituting the wire.
[005] Plus particulièrement, l'invention s'intéresse aux traitements dans lesquels, au cours d'une première étape, on dépose sur la surface du fil une fine couche d'un produit de traitement sous forme liquide. Ce produit de traitement peut être par exemple formé d'un solvant et d'un soluté actif ou encore d'un produit apte à polymériser.More particularly, the invention is concerned with treatments in which, during a first step, is deposited on the surface of the wire a thin layer of a treatment product in liquid form. This treatment product may for example be formed of a solvent and an active solute or a product capable of polymerizing.
[006] L'étape de traitement suivante a alors pour objet d'extraire le solvant, de manière à ne laisser subsister que le produit actif à la surface du fil ou de laisser s'achever la réaction de polymérisation, ou encore de réaliser une combinaison de ces deux actions. [007] Une attention toute particulière doit alors être portée à la quantité précise de dépôt liquide présente à la surface du fil. Il importe en effet de s'assurer que la couche de liquide déposée, et généralement de faible épaisseur, soit la plus régulière possible pour s'assurer de la régularité du traitement et des propriétés du fil sur toute sa longueur.The next treatment step is then to extract the solvent, so as to leave only the active product on the surface of the wire or let the polymerization reaction finish, or to achieve a combination of these two actions. [007] Particular attention must then be paid to the precise amount of liquid deposit present on the surface of the wire. It is important to ensure that the liquid layer deposited, and generally thin, is as regular as possible to ensure the regularity of the treatment and the properties of the wire along its length.
[008] A cet effet, les techniques connues de mouillage ou d'enduction consistent à faire circuler le fil dans un bain contenant le liquide de traitement que l'on désire déposer. En trempant dans le bain, le fil s'imprègne de la solution liquide puis ressort en direction de l'étape de traitement au cours de laquelle s'effectue le séchage ou la polymérisation.[008] For this purpose, the known techniques of wetting or coating consist in circulating the wire in a bath containing the treatment liquid that is desired to deposit. By soaking in the bath, the yarn impregnates the liquid solution and then leaves in the direction of the treatment step during which the drying or the polymerization is carried out.
[009] II a toutefois été observé que, selon la nature du fil ou du liquide à déposer, le fil pouvait se comporter comme une véritable pompe, apte à entraîner une quantité de liquide bien supérieure à la quantité nécessaire. Cet effet de pompage est lié à des paramètres tels que la viscosité du liquide, à la différence de tension superficielle entre le fil et le produit de traitement sous forme liquide, et à la vitesse de circulation du fil dans le bain.[009] It has however been observed that, depending on the nature of the wire or the liquid to be deposited, the wire could behave like a real pump, able to cause a quantity of liquid much greater than the necessary amount. This pumping effect is related to parameters such as the viscosity of the liquid, the difference in surface tension between the wire and the treatment product in liquid form, and the speed of flow of the wire in the bath.
[010] C'est la raison pour laquelle il est préconisé l'utilisation d'un ou plusieurs jeux de racleurs ou d'essoreurs, placés en sortie du bain de trempage, et aptes à extraire la quantité de liquide superflue. Toutefois, ces moyens peuvent s'avérer limités en ce qu'ils sont eux-mêmes susceptibles de s'engorger, du fait des nombreux contacts existant entre le fil et les moyens d'essorage, ce qui limite leur faculté à assurer pleinement leur fonction, en particulier lorsque, pour des raisons évidentes de productivité, on cherche à augmenter la vitesse de circulation du fil.[010] This is the reason why it is recommended the use of one or more sets of scrapers or wipers, placed at the outlet of the soaking bath, and able to extract the amount of superfluous liquid. However, these means may be limited in that they are themselves likely to become engorged, because of the many contacts between the wire and the spinning means, which limits their ability to fully perform their function , especially when, for obvious reasons of productivity, it is sought to increase the speed of movement of the wire.
[011] L'invention a pour objet d'apporter une solution à ce problème.[011] The invention aims to provide a solution to this problem.
[012] Le dispositif de dépôt d'un produit de traitement sur la surface d'un fil en continu selon l'invention comprend : des moyens d'imprégnation par trempage du fil dans un bain destiné à contenir une solution du produit de traitement sous forme liquide, et dans lequel le fil circule lorsque le dispositif est en fonctionnement, des moyens d'essorage, placés en aval des moyens d'imprégnation, aptes à enlever les excédents de liquide emmenés par le fil, des moyens de traitement disposés en aval des moyens d'essorage, aptes à faire passer la solution liquide restant sur le fil en phase solide, - des moyens aptes à guider et à faire circuler le fil depuis l'entrée jusqu'à la sortie du dispositif selon un sens df et une vitesse Vf The device for depositing a treatment product on the surface of a continuous yarn according to the invention comprises: means for impregnating by dipping the yarn in a bath intended to contain a solution of the treatment product under liquid form, and wherein the wire flows when the device is in operation, dewatering means, placed downstream of the impregnation means, able to remove excess liquid carried by the wire, treatment means arranged downstream of the dewatering means, able to pass the liquid solution remaining on the solid phase wire, means capable of guiding and circulating the wire from the input to the output of the device in a direction df and a speed V f
[013] Ce dispositif se caractérise en ce que les moyens d'essorage comportent des moyens aptes à projeter ledit liquide de traitement à une vitesse régulée et de façon appropriée, en direction du fil sous forme de jets convergents et dans des directions, dont le sens fait un angle obtus α avec le sens de circulation dudit fil, de manière à ajuster l'épaisseur e de liquide restant sur le fil en sortie des dits moyens d'essorage.[013] This device is characterized in that the dewatering means comprise means capable of projecting said treatment liquid at a regulated speed and appropriately, towards the wire in the form of convergent jets and in directions, the direction makes an obtuse angle α with the direction of flow of said wire, so as to adjust the thickness e of liquid remaining on the wire output of said dewatering means.
[014] Les jets projettent donc le liquide sur le fil à une vitesse dont une composante est de même direction que le fil mais de sens opposé au sens de progression du fil, et qui a pour effet de racler l'excès de liquide entraîné par le fil.[014] The jets thus project the liquid on the wire at a speed whose component is in the same direction as the wire but in the opposite direction to the direction of progression of the wire, and which has the effect of scraping the excess liquid entrained by thread.
[015] En ajustant de manière judicieuse la vitesse du fil ou la vitesse et le débit de projection du liquide on peut alors réguler de manière précise la quantité de liquide de traitement déposée par unité de longueur de fil en sortie du dispositif.[015] By judiciously adjusting the speed of the wire or the speed and the liquid projection rate can then accurately regulate the amount of treatment liquid deposited per unit length of wire output of the device.
[016] On observera également que le fil circule à l'intérieur du moyen d'essorage sans contact avec ledit moyen. Il s'en suit, de manière avantageuse qu'il est possible de faire circuler le fil à l'intérieur du dispositif de traitement entre la sortie des moyens d'imprégnation et la sortie des moyens de traitement sans que ledit fil ne vienne en contact avec les moyens de guidage. Cet avantage peut s'avérer décisif pour réguler la quantité de produit de traitement sur le fil sans que cette quantité ne soit altérée par le frottement du fil sur une poulie ou un cabestan.[016] It will also be observed that the wire flows inside the wiper means without contact with said means. It follows advantageously that it is possible to circulate the wire inside the treatment device between the outlet of the impregnation means and the outlet of the processing means without said wire coming into contact. with the guide means. This advantage can be decisive for regulating the amount of treatment product on the wire without this amount being impaired by the friction of the wire on a pulley or a capstan.
[017] II est également possible de faire varier l'angle de projection des jets de manière à obtenir un effet similaire. Toutefois, il s'avère qu'un angle trop faible et proche d'un angle de 180° ne permet pas au liquide de venir racler efficacement la surface du fil, et qu'un angle trop élevé et proche de 90° conduit à augmenter l'effet de « pompage » du liquide par le fil. Il a ainsi été considéré qu'un angle compris entre 120° et 160° donnait de bons résultats.[017] It is also possible to vary the projection angle of the jets so as to obtain a similar effect. However, it turns out that an angle too small and close to an angle of 180 ° does not allow the liquid to scrape effectively the surface of the wire, and an angle too high and close to 90 ° leads to increase the effect of "pumping" of the liquid by the wire. It was thus considered that an angle between 120 ° and 160 ° gave good results.
[018] La description qui suit a pour objet de mettre en lumière les principales caractéristiques de l'invention, en s'appuyant sur la figure 1 qui représente une vue schématique d'un dispositif selon l'invention en condition de fonctionnement.[018] The following description is intended to highlight the main features of the invention, based on Figure 1 which shows a schematic view of a device according to the invention in operating condition.
[019] Le dispositif servant de support à la présente description comprend des moyens d'imprégnation 2, des moyens d'essorage 3 des moyens de traitement et des moyens matérialisés par des poulies de renvoi, aptes à faire circuler un fil 10 depuis l'entrée (51 ) jusqu'à la sortie (54) du dispositif, entre et à l'intérieur des moyens d'imprégnation (52, 53).The device serving as a support for the present description comprises impregnation means 2, dewatering means 3 of the processing means and means embodied by return pulleys, able to circulate a wire 10 from the inlet (51) to the outlet (54) of the device, between and inside the impregnation means (52, 53).
[020] Les moyens d'imprégnation 2 sont formés, par exemple, d'un bac 25 contenant un liquide 20 de traitement. Ce liquide de traitement peut être un soluté dilué dans un solvant ou encore un composé organique apte à polymériser sous l'action de la chaleur ou d'une source d'énergie telle qu'un rayonnement laser ou UV.[020] The impregnating means 2 are formed, for example, of a tank 25 containing a treatment liquid. This treatment liquid may be a solute diluted in a solvent or an organic compound capable of polymerizing under the action of heat or a source of energy such as laser or UV radiation.
[021] Le fil continu 10, est entraîné dans le bac 25 par des moyens d'entraînement (non visualisés) telle qu'une poulie motorisée, depuis une source de fil (non visualisée). Le fil se déplace dans le dispositif de traitement à une vitesse Vf. En sortie du dispositif le fil peut être reconditionné en vue d'une étape de production ultérieure, ou directement intégré au matériau à renforcer.[021] The continuous wire 10 is driven into the tray 25 by drive means (not visualized) such as a motorized pulley, from a wire source (not shown). The wire moves in the processing device at a speed Vf. At the output of the device the wire can be repacked for a subsequent production step, or directly integrated with the material to be reinforced.
[022] En sortie du bain de traitement 2, le fil 10 est imprégné du liquide de traitement 20 qui forme également une couche 23 sur toute la surface du fil. On observe comme cela a déjà été mentionné plus haut que le fil agit comme une pompe, et que la quantité 23 de liquide de traitement emmenée par le fil augmente lorsque la vitesse de circulation Vf augmente. Aussi, lorsque l'on cherche à accroître la vitesse Vf pour des raisons évidentes de productivité, la quantité de liquide déposée sur le fil augmente, et il y a une nécessité impérieuse de réguler l'épaisseur e de liquide (voir médaillon).[022] At the outlet of the treatment bath 2, the wire 10 is impregnated with the treatment liquid 20 which also forms a layer 23 over the entire surface of the wire. It will be observed, as already mentioned above, that the wire acts as a pump, and that the quantity of treatment liquid carried by the wire increases as the circulation velocity V f increases. Also, when one seeks to increase the speed Vf for obvious reasons of productivity, the amount of liquid deposited on the wire increases, and there is an imperative need to regulate the thickness e liquid (see locket).
[023] Les moyens d'essorage sont formés d'un canal central 34 au travers duquel le fil 10 circule à la vitesse Vf, selon un sens et une direction df, correspondant sensiblement à la direction longitudinale du canal 34. Les moyens d'essorage 3 peuvent avantageusement être orientés de manière à ce que le sens df de circulation du fil soit dirigé verticalement de bas en haut.[023] The dewatering means are formed of a central channel 34 through which the wire 10 flows at the speed V f , in a direction and a direction d f , corresponding substantially to the longitudinal direction of the channel 34. The means Spin 3 may advantageously be oriented so that the direction of flow f of the wire is directed vertically from bottom to top.
[024] Les moyens d'essorage 3 comprennent également une entrée 31 par laquelle le liquide de traitement sous pression 20 pénètre dans une chambre 32. Le liquide de traitement est expulsé par des buses 33 sous forme de jets 21 convergents en direction du fil 10 à une vitesse Vj. Les jets sont orientés de manière à ce que le sens d, de projection du liquide sur le fil fasse un angle obtus α avec le sens df de circulation du fil.[024] The dewatering means 3 also comprise an inlet 31 through which the pressurized treatment liquid 20 enters a chamber 32. The treatment liquid is expelled by nozzles 33 in the form of jets 21 converging toward the wire 10 at a speed V j . The jets are oriented so that the direction d, of projection of the liquid on the wire makes an obtuse angle α with the direction d f of circulation of the wire.
[025] La collision des jets 21 sur la surface du fil 10 a pour effet d'éjecter le liquide excédentaire sous forme d'éclaboussures 22, qu'il est possible de récupérer dans un récipient de forme appropriée. A cet effet, et à titre illustratif, la paroi 26 du bac 25 peut être relevée pour faire en sorte que ces excédents de liquide de traitement retombent dans le bac 25 par simple gravité.[025] The collision of the jets 21 on the surface of the wire 10 has the effect of ejecting the excess liquid in the form of splash 22, which can be recovered in a suitably shaped container. For this purpose, and for illustrative purposes, the wall 26 of the tank 25 can be raised to ensure that these surplus treatment liquid drops back into the tank 25 by simple gravity.
[026] Une pompe de recirculation 27 aspire le liquide de traitement par un conduit 28 pour alimenter la chambre 32 sous pression.[026] A recirculation pump 27 sucks the treatment liquid through a conduit 28 to supply the chamber 32 under pressure.
[027] Ainsi, pour une vitesse Vf du fil on ajuste la vitesse Vj et le débit de sortie des jets 21 du liquide de traitement en agissant sur le débit et la pression de sortie de la pompe 27 pour obtenir une épaisseur e de liquide déposée sur le fil qui soit constante en sortie des moyens d'essorage 3. Ce mode de régulation permet, entre autre, de s'affranchir des irrégularité liées aux phases transitoires, ou aux variations de vitesse imposées à la vitesse du fil par un procédé situé en amont ou aval du dispositif de traitement faisant l'objet de la présente invention.[027] Thus, for a speed V f of the wire is adjusted the speed V j and the discharge rate of the jets 21 of the treatment liquid by acting on the flow and the outlet pressure of the pump 27 to obtain a thickness e of liquid deposited on the wire which is constant at the outlet of the wiping means 3. This regulation mode makes it possible, among other things, to overcome the irregularities related to the transient phases, or to the speed variations imposed on the speed of the wire by a process located upstream or downstream of the treatment device subject of the present invention.
[028] Enfin, il est encore possible de modifier l'angle α ; Une augmentation de l'angle α a pour effet de réduire l'épaisseur e de liquide entraîné par le fil. Toutefois ce moyen de régulation s'avère plus difficile à mettre en œuvre. En conséquence on préférera déterminer un angle entre les valeurs données ci- dessus et faire varier les vitesses de défilement Vf ou d'éjection Vj simultanément ou séparément pour réguler l'épaisseur de liquide déposée sur le fil[028] Finally, it is still possible to modify the angle α; An increase in the angle α has the effect of reducing the thickness e of liquid entrained by the wire. However, this means of regulation proves more difficult to implement. Consequently, it will be preferable to determine an angle between the values given above and to vary the scroll speeds V f or ejection V j simultaneously or separately to regulate the thickness of liquid deposited on the wire.
[029] Pour que le système soit efficace, il est intéressant de faire converger les jets précisément vers le fil, et de faire en sorte que la somme des composantes perpendiculaire à la direction du fil des vecteurs représentant la quantité de mouvement de chacun des jets soit sensiblement égale à zéro de manière à ne pas induire de forces perpendiculaire au fil susceptibles de déplacer le fil en direction des parois du canal 34.[029] For the system to be effective, it is interesting to make the jets converge precisely on the wire, and to make the sum of the components perpendicular to the direction of the yarn of the vectors representing the amount of movement of each of the jets is substantially equal to zero so as not to induce forces perpendicular to the wire capable of moving the wire towards the walls of the channel 34.
[030] De manière pratique, en considérant que les vitesses d'éjection et les débits de chacune des buses sont égaux, on s'arrange pour que les composantes perpendiculaires à la direction du fil du vecteur vitesse Vj de chacun des jets aient des modules de valeur sensiblement égales, et que les jets soient disposés autour du canal central 34 de manière à ce que ces valeurs vectorielles s'annulent, ce qui revient à disposer les buses sur les sommets d'un polygone, régulier situé dans un plan perpendiculaire à la direction df, et dont le centre correspond au point de passage du fil.[030] In practice, considering that the ejection speeds and flow rates of each of the nozzles are equal, it is arranged that the components perpendicular to the direction of the wire of the velocity vector Vj of each of the jets have modules of substantially equal value, and that the jets are arranged around the central channel 34 so that these vector values are canceled, which amounts to arranging the nozzles on the vertices of a polygon, regular located in a plane perpendicular to the direction of f , and whose center corresponds to the point of passage of the wire.
[031] Par extension, il est ainsi possible de concevoir une buse circulaire dont les parois internes 33a, 33b se présentent sous la forme de tronçons de cônes emboîtés, dont l'axe correspondant sensiblement à l'axe du canal 34, et dont les génératrices forment un angle externe égal à l'angle α.[031] By extension, it is thus possible to design a circular nozzle, the internal walls 33 a, 33 b are in the form of nested cones sections, the axis substantially corresponding to the channel axis 34, and whose generatrices form an external angle equal to the angle α.
[032] Ces moyens d'essorage présentent l'intérêt particulier de pouvoir être régulés de manière simple en fonction de la vitesse Vf de défilement du fil, à l'inverse des moyens d'essorage classiques tels que des rouleaux d'essuyage qui présentent l'inconvénient de se saturer lorsque la quantité de liquide excédentaire à enlever devient trop importante.[032] These draining means have the particular advantage of being able to be regulated in a simple manner depending on the speed V f of travel of the wire, in contrast to conventional dewatering means such as wiping rollers have the disadvantage of becoming saturated when the amount of excess liquid to be removed becomes too large.
[033] L'adaptation des vitesses et des débits de projection à la vitesse de circulation du fil doit se faire dans les limites imposées par la nature et les caractéristiques physiques du fil et du liquide à projeter, et dont les principaux descripteurs sont la viscosité, la mouillabilité et l'état de surface du fil.[033] The adaptation of the velocities and the flow rates to the speed of movement of the wire must be within the limits imposed by the nature and physical characteristics of the wire and the liquid to be sprayed, and whose main descriptors are the viscosity , wettability and surface condition of the wire.
[034] En aval des moyens d'essorage 3, sont disposés les moyens de traitement 4 qui ont pour objet de fixer le liquide de traitement et de faire passer ledit liquide de la phase liquide en phase solide ou plastique. Ces moyens peuvent, à titre d'exemple comprendre des moyens de chauffage pour évaporer le solvant du liquide de traitement ou démarrer une réaction de polymérisation qui va figer le produit de traitement à la surface du fil 10. Cette réaction peut aussi être engendrée par d'autres moyens tel que des moyens de chauffage par induction, des rayonnements UV ou des rayonnements laser ou tout autre moyen susceptible de faire adhérer les produits de traitement contenus dans le liquide de traitement à la surface du fil.[034] Downstream of the dewatering means 3 are arranged the processing means 4 which are intended to fix the treatment liquid and to pass said liquid from the liquid phase in solid or plastic phase. These means may, by way of example, include heating means for evaporating the solvent from the treatment liquid or starting a polymerization reaction which will freezing the treatment product on the surface of the wire 10. This reaction can also be generated by other means such as induction heating means, UV radiation or laser radiation or any other means capable of adhering the products of treatment contained in the treatment liquid on the surface of the wire.
[035] Une des caractéristiques intéressante du dispositif selon l'invention est qu'il est possible de faire circuler le fil depuis la sortie des moyens d'imprégnation 2 matérialisée par la ligne AA, jusqu'à la sortie des moyens de traitement 4 matérialisée par la ligne BB sans que le fil rentre en contact avec les parois du canal 34, ni avec une poulie de renvoi appartenant au système de guidage. Le fil circule librement entre les poulies de renvoi 53 et 54. Cet avantage permet d'éliminer toutes les causes susceptibles d'altérer la forme de la couche de liquide de traitement jusqu'à ce que ce dernier soit définitivement rendu solide en sortie des moyens de traitement 4. [035] One of the interesting features of the device according to the invention is that it is possible to circulate the wire from the outlet of the impregnation means 2 materialized by the line AA, until the output of the materialized processing means 4 by the line BB without the wire comes into contact with the walls of the channel 34, or with a return pulley belonging to the guide system. The wire flows freely between the return pulleys 53 and 54. This advantage makes it possible to eliminate all the causes likely to alter the shape of the treatment liquid layer until the latter is permanently made solid at the outlet of the means. treatment 4.

Claims

REVENDICATIONS
1 ) Dispositif de dépôt d'un produit de traitement (20) sur la surface d'un fil (10) en continu comprenant : - des moyens d'imprégnation (2) par trempage du fil dans un bain destiné à contenir une solution du produit de traitement sous forme liquide (20), et dans lequel le fil (10) circule lorsque le dispositif est en fonctionnement, des moyens (3) d'essorage, placés en aval des moyens d'imprégnation 1) Device for depositing a treatment product (20) on the surface of a wire (10) continuously comprising: - impregnation means (2) by dipping the wire in a bath intended to contain a solution of the treatment product in liquid form (20), and in which the wire (10) circulates when the device is in operation, drying means (3), placed downstream of the impregnation means
(2), aptes à enlever les excédents de liquide (22) emmenés par le fil, - des moyens de traitement (4) disposés en aval des moyens d'essorage(2), capable of removing excess liquid (22) carried by the wire, - treatment means (4) arranged downstream of the wringing means
(3), aptes à faire passer la solution liquide restant sur le fil en phase solide, des moyens aptes à guider (51 , 52, 53, 54) et à faire circuler le fil depuis l'entrée jusqu'à la sortie du dispositif selon un sens df et une vitesse Vf , caractérisé en ce que les moyens d'essorage (3) comportent des moyens aptes à projeter ledit liquide de traitement à une vitesse Vj régulée de façon appropriée, en direction du fil (10) sous forme de jets (21 ) convergents et dans des directions dont le sens d, fait un angle obtus α avec le sens df de circulation dudit fil, de manière à ajuster l'épaisseur e de liquide restant sur le fil (10) en sortie des dits moyens d'essorage (3).(3), capable of passing the liquid solution remaining on the solid phase wire, means capable of guiding (51, 52, 53, 54) and circulating the wire from the inlet to the outlet of the device in a direction d f and a speed Vf, characterized in that the spinning means (3) comprise means capable of projecting said treatment liquid at a speed V j appropriately regulated, in the direction of the wire (10) under form of jets (21) converging and in directions whose direction d makes an obtuse angle α with the direction d f of circulation of said wire, so as to adjust the thickness e of liquid remaining on the wire (10) at the outlet said drying means (3).
2) Dispositif selon la revendications 1 , dans lequel les moyens d'essorage (3) sont traversés de part en part par un canal rectiligne (34) dans lequel circule le fil (10) lorsque le dispositif est en fonctionnement,2) Device according to claim 1, in which the wringing means (3) are crossed right through by a rectilinear channel (34) in which the thread (10) circulates when the device is in operation,
3) Dispositif selon la revendication 2 dans lequel, lorsque ledit dispositif est en fonctionnement, le fil (10) circule au sein des moyens d'essorage sans rentrer en contact avec les parois dudit canal (34) desdits moyens d'essorage (3).3) Device according to claim 2 in which, when said device is in operation, the thread (10) circulates within the wringing means without coming into contact with the walls of said channel (34) of said wringing means (3) .
4) Dispositif selon la revendication 3 dans lequel, lorsque ledit dispositif est en fonctionnement, le fil circule entre la sortie des moyens d'imprégnation (AA) et la sortie des moyens de traitement (BB), sans contact avec les moyens de guidage. 5) Dispositif selon l'une des revendications 2 à 4, dans lequel les moyens d'essorage (3) comprennent une buse unique circulaire, dont les parois internes (33a, 33b) se présentent sous la forme de tronçons de cônes emboîtés, dont l'axe correspond sensiblement à l'axe du canal (34), et dont les génératrices forment un angle externe sensiblement égal à l'angle α.4) Device according to claim 3 wherein, when said device is in operation, the wire circulates between the outlet of the impregnation means (AA) and the outlet of the treatment means (BB), without contact with the guide means. 5) Device according to one of claims 2 to 4, in which the wringing means (3) comprise a single circular nozzle, the internal walls ( 33a , 33b) of which are in the form of sections of nested cones, whose axis corresponds substantially to the axis of the channel (34), and whose generators form an external angle substantially equal to the angle α.
6) Dispositif selon l'une des revendications 1 à 5, dans lequel l'angle α de projection du liquide est compris entre 120° et 160°.6) Device according to one of claims 1 to 5, in which the liquid projection angle α is between 120° and 160°.
7) Dispositif selon l'une des revendications 1 à 6 comprenant des moyens aptes à réguler la vitesse de projection du liquide Vj en fonction de la vitesse de circulation du fil Vf et de l'épaisseur de liquide e désirée en sortie desdits moyens d'essorage (3).7) Device according to one of claims 1 to 6 comprising means capable of regulating the speed of projection of the liquid V j as a function of the speed of circulation of the wire V f and the thickness of liquid e desired at the outlet of said means spin (3).
8) Dispositif selon la revendication 7, comprenant en outre des moyens (27) aptes à ajuster le débit et la pression du liquide de traitement (20) projeté sur le fil (10).8) Device according to claim 7, further comprising means (27) capable of adjusting the flow rate and the pressure of the treatment liquid (20) projected onto the wire (10).
9) Dispositif selon l'une des revendications 1 à 8 comprenant des moyens de captage (25, 26) et de recirculation (27) du liquide (22) projeté à la surface du fil par les moyens d'essorage.9) Device according to one of claims 1 to 8 comprising means for capturing (25, 26) and recirculating (27) the liquid (22) projected onto the surface of the wire by the wringing means.
10) Procédé de traitement d'un fil dans lequel on imprègne un fil (10) en le faisant circuler, selon une direction df et une vitesse Vf donnée, dans un bain (25) contenant un produit de traitement sous forme liquide (20), on essore le fil pour enlever les excédents de liquide (22) emmenés par le fil, on fait passer le liquide restant sur le fil en phase solide, de sorte que le produit de traitement adhère au fil, caractérisé en ce qu'on essore le fil en projetant ledit liquide de traitement à une vitesse Vj, régulée de façon appropriée, en direction du fil sous forme de jets (21 ) convergents et dans des directions, dont le sens d, fait un angle obtus α avec le sens df de circulation dudit fil10) Process for treating a wire in which a wire (10) is impregnated by circulating it, in a direction d f and a given speed V f , in a bath (25) containing a treatment product in liquid form ( 20), the wire is wrung out to remove the excess liquid (22) carried by the wire, the remaining liquid is passed over the wire in solid phase, so that the treatment product adheres to the wire, characterized in that the thread is wrung by projecting said treatment liquid at a speed Vj, regulated appropriately, in the direction of the thread in the form of converging jets (21) and in directions, the direction of which d, makes an obtuse angle α with the direction circulation df of said wire
1 1 ) Procédé de traitement selon la revendication 10 dans lequel, on régule la vitesse de projection Vj et le débit des jets (21 ) en fonction de la vitesse de circulation du fil Vf. l'épaisseur de liquide e désirée en sortie du moyen d'essorage (3).1 1) Treatment method according to claim 10 in which, the projection speed V j and the flow rate of the jets (21) as a function of the wire circulation speed V f . the desired thickness of liquid e at the outlet of the drying means (3).
12) Procédé selon la revendication 10 dans lequel les jets (21 ) ont des débits et des vitesses d'éjection V1 sensiblement équivalents. 12) Method according to claim 10 in which the jets (21) have substantially equivalent flow rates and ejection speeds V 1 .
EP09753907.6A 2008-05-30 2009-05-27 High-speed wire coating device and method Active EP2313546B1 (en)

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FR2917755B1 (en) * 2007-06-20 2010-02-12 Michelin Soc Tech DEVICE AND METHOD FOR DEPOSITING A SOLUTE ON A METAL WIRE
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FR2931849B1 (en) 2010-06-04
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