EP1451397A1 - Method and device for controlling a line of drawing rollers of a textile machine - Google Patents

Method and device for controlling a line of drawing rollers of a textile machine

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Publication number
EP1451397A1
EP1451397A1 EP02802534A EP02802534A EP1451397A1 EP 1451397 A1 EP1451397 A1 EP 1451397A1 EP 02802534 A EP02802534 A EP 02802534A EP 02802534 A EP02802534 A EP 02802534A EP 1451397 A1 EP1451397 A1 EP 1451397A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
stretching
cylinders
toothed belt
pressure cylinder
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
EP02802534A
Other languages
German (de)
French (fr)
Other versions
EP1451397B1 (en
Inventor
Jean-Louis Dumas
Gérard GAIRE
Jean-Baptiste Schaffhauser
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.)
N Schlumberger SAS
Original Assignee
N Schlumberger SAS
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Filing date
Publication date
Application filed by N Schlumberger SAS filed Critical N Schlumberger SAS
Publication of EP1451397A1 publication Critical patent/EP1451397A1/en
Application granted granted Critical
Publication of EP1451397B1 publication Critical patent/EP1451397B1/en
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
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control

Definitions

  • the present invention relates to the field of textile machines, in particular drawing machines and finishers and relates to a method for controlling a drawing group of a textile machine.
  • the invention also relates to a device for implementing this method.
  • machine stretching groups such as chain gills, screw intersecting, sun or hedgehog gills, and finishers, such as sleeve wipers and pin benches, are generally formed by a set of two fluted metal cylinders called stretching cylinders, against which is pressurized a cylinder covered with an elastic lining called a pressure cylinder.
  • the stretching cylinder which is located in the immediate vicinity of the fiber control zone, has a smaller diameter than the neighboring stretching cylinder, in order to minimize the distance separating the stretching group from the fiber control zone.
  • Each stretching cylinder has at its end a pinion through which it receives its rotational movement.
  • Such a stretching group is shown schematically, for example, in FR-A-1 456 485, in which the pinions of each stretching cylinder are connected together by an intermediate pinion.
  • one of the pinions is a bell pinion inside which the other pinion meshes.
  • more recent embodiments provide for the installation of a lubricated casing containing an intermediate shaft with two pinions, in order to connect the pinions of the two stretching cylinders.
  • This solution has the advantage of allowing higher speeds of rotation of the stretching cylinders and therefore of increasing the production of textile machines.
  • it has the disadvantage of being expensive, of requiring perfect sealing and of causing high heating of the moving parts.
  • the elastic material of the pressure cylinder must necessarily compensate by its deformation for these slight differences in speed, which leads to heating of the moving parts, a pulsation which can cause irregularities on the tape or the wick produced by the textile machine, a premature wear of the pressure cylinder linings, overload of the control pinions of the lubricated housing, causing their premature wear, heating and increased operating noise, as well as heating of the lubrication liquid and rapid wear of the seals sealing, which results in leakage of oil or fluid grease.
  • the object of the present invention is to overcome these drawbacks by proposing a new method for controlling a stretching unit of a textile machine and a device for implementing this method, enabling lower manufacturing costs to be obtained, and rapid disassembly and reassembly of the stretching cylinders.
  • the method of controlling a stretching group of a textile machine comprising two stretching cylinders and a pressure cylinder, which is pressurized against the two stretching cylinders, and possibly a calendering cylinder cooperating with a pressure, is characterized in that it consists essentially in driving in rotation without sliding one of the stretching cylinders and in rotating in friction by the other stretching cylinder.
  • the invention also relates to a device for implementing this process, in the form of a stretching unit comprising two stretching cylinders and a pressure cylinder which is pressurized against the two stretching cylinders, and possibly a calendering cylinder cooperating with a pressure cylinder, characterized in that one of the stretching cylinders is rotated by a toothed belt meshing on a pinion integral with this first stretching cylinder, and the other stretching cylinder is rotated by a friction device.
  • FIGS. 1 to 3 are plan views showing the kinematic chains of three alternative embodiments of a stretching group according to the invention
  • Figure 4 is a side elevational view of a drawing unit according to the invention
  • Figure 5 is a representation of the mounting of a drawing cylinder according to the invention.
  • the control method of a stretching group of a textile machine comprising two stretching rollers 1 and 2 mounted on bearings 6 and a pressure cylinder 3, which is put under pressure against the two stretching cylinders 1 and 2, and possibly a calendering cylinder 16 cooperating with a pressure cylinder 18, essentially consists in driving in rotation without sliding one of the stretching cylinders 1 and in driving in rotation by friction the other stretching cylinder 2.
  • This process is implemented by a device in the form of a stretching group comprising two stretching cylinders 1 and 2, mounted on bearings 6, and a pressure cylinder 3 provided with an elastic coating, which is put under pressure against the two stretching cylinders 1 and 2, and possibly a calendering cylinder 16 cooperating with a pressure cylinder 18.
  • the first stretching cylinder 1 has a smaller diameter than the second stretching cylinder 2, so that the distance separating the control zone 4 of the fibers and the pinching line of the fibers, constituted by the contact zone of the pressure cylinder 3 against the stretching cylinder 1, which is as low as possible.
  • the stretching cylinders 1 and 2 are fluted helically and are mounted on bearings 5 (FIG. 5) inside bearings 6 which are integral of the machine frame.
  • the first stretching cylinder 1 has at one of its ends, a toothed pinion 7 rotated by means of a toothed belt 8, itself driven by a toothed pinion 9 driven in rotation by a motor 10, by the intermediate of a kinematic chain (not shown).
  • one of the stretching cylinders 1 is rotated by a toothed belt 8, meshing on a pinion 7 integral with this first stretching cylinder 1, and the other stretching cylinder 2 is rotated by a device friction.
  • the friction device is in the form of an notched belt 12 rotating in rotation a smooth pulley 11 secured to the second stretching cylinder 2.
  • the drive carried out by cooperation of an notched belt 12 with a smooth pulley 11 is not perfectly positive, slight sliding of one over the other is authorized and absorbed by the belt non-toothed 12 and not by the lining of the pressure cylinder 3.
  • the dimensions and characteristics of the non-toothed belt 12 and the pulley 11 are determined in such a way that the stretching cylinder or cylinders 2 are driven almost positively, that is that is, as soon as there is a difference in peripheral speed of one of the stretching cylinders 1 relative to the other 2 or relative to the pressure cylinder 3, it is the belt 12 ell itself which slides on its pulley 11 and absorbs the difference in speed and not the lining of the pressure cylinder 3.
  • the second stretching cylinder 2 has at one of its ends a pulley preferably smooth 11 and with a domed rim, rotated by means of an notched belt, preferably a flat belt 12 itself driven by an intermediate pulley 13 mounted on an intermediate axis 14. On this same intermediate axis 14 is mounted an intermediate toothed pinion 15 driven in rotation by the toothed belt 8.
  • the motor 10 drives the first stretching cylinder 1 positively and without possible sliding, while the second stretching cylinder 2 is driven by the friction device which consists of the smooth pulleys 11 and 13 and the non-toothed belt 12.
  • the friction device acts as soon as a slight difference in peripheral speed tends to appear between the pressure cylinder 3 and the second stretching cylinder 2 by allowing the non-toothed belt 12 to slide on one of the smooth pulleys 11 or 13.
  • the non-toothed belt 12 absorbs the sliding energy caused by slight differences in speed of one member with respect to the other, the coating of the pressure cylinder 3 then being preserved.
  • Figure 4 of the accompanying drawings is a side elevational view of a stretching unit according to the invention.
  • the tension of the notched belt 12 is adjustable by modifying the distance between the axes of the smooth pulleys 11 and 13.
  • the smooth pulley 13 is integral with the axis 14 mounted on a bearing inside a bearing 20 articulated around an axis of articulation 21.
  • the articulated bearing 20 can oscillate around the axis of articulation 21 and move relative to the frame of the machine, so as to modify the distance between axes of the smooth pulley 13 relative to the smooth pulley 11.
  • a locking means 22, such as a screw and nut assembly, allows the bearing 20 to keep a stable position relative to the frame of the machine.
  • the tension of the toothed belt 8 is also adjustable by means of a tensioner 23, the position of which can be modified relative to the frame of the machine. To ensure correct operation of the friction device, the tension of the non-toothed belt 12 is first adjusted, then the tension of the toothed belt 8 is adjusted.
  • the notched belt 12 can also be driven directly by means of the calender cylinder 16, the intermediate pulley 13 then being mounted on the axis of the latter and the tension of said non-toothed belt 12 being ensured by means of a tension roller located on the path of said belt.
  • the bearing 20, the articulation 21 and the locking means 22 are eliminated.
  • the friction device can be constituted by the contact between the pressure cylinder 3 and the stretching cylinders 1 and 2 (FIG. 3).
  • the first stretching cylinder 1 is rotated without sliding by means of a toothed belt 8 and a toothed pinion 7 secured to the stretching cylinder 1.
  • the toothed belt 8 cooperates with the toothed pinion 9, as indicated above.
  • the first stretching cylinder 1 transmits, by surface contact, its rotational movement to the pressure 3.
  • the latter then transmits the rotational movement, also by surface contact, to the second stretching cylinder 2.
  • the second stretching cylinder 2 acquires the same peripheral speed as that of the pressure cylinder 3.
  • at least one of the cylinders comprising the stretching group is mounted on bearings 6 with removable caps, to facilitate disassembly and reassembly of said stretching cylinder.
  • each bearing 6 consists of a support 24a secured to the frame of the machine and a removable cap 24b.
  • the support 24a and the removable cap 24b each have a semi-cylindrical bearing surface adjusted to the outside diameter of the bearing 5.
  • the textile machine when the textile machine is equipped with a calender cylinder 16 cooperating with a pressure cylinder 18, the toothed belt 8 meshes, in addition, with a toothed pinion 17 mounted at one end of said calender cylinder 16.
  • a calendering cylinder 16 which is helically grooved, is mounted on bearings inside bearings integral with the frame of the machine, in the same way as the stretching cylinders 1 and 2.
  • the pressure cylinder 18, which is put under pressure against the calendering cylinder 16, acquires the same peripheral speed as that of the calendering cylinder 16.
  • the peripheral speed of the calendering cylinder 16 is necessary to be able to adjust the peripheral speed of the calendering cylinder 16 relative to that of the stretching unit. Indeed, in certain cases, the textile material must be more or less stretched, or sometimes even relaxed between the stretching group and the calender roll.
  • the tension that is to say the peripheral speed ratio of the calendering cylinder relative to the stretching group, can be modified by changing the toothed pinion 17.
  • the precision of this adjustment depends on the number of teeth of the pinion 17.
  • the calender cylinder 16 when the textile machine is equipped with a calender cylinder 16 cooperating with a pressure cylinder 18, the calender cylinder 16 can be driven by friction, by provision at one of its ends for a smooth pulley 19 rotated by the notched belt 12.
  • the tension that is to say the peripheral speed ratio of the calender cylinder 16 relative to the stretching group, is also modifiable by changing the smooth pulley 19.
  • the precision of this adjustment is finer, because it depends on the diameter of the smooth pulley 19 and not on a whole number of teeth.
  • the toothed belt 8 when the textile machine does not have a calender cylinder, the toothed belt 8 cooperates with a toothed pinion 17 mounted to rotate freely in a bearing on the frame of the machine, in an eccentric position with respect to a straight line connecting the axes of the smooth pulleys 11 and 13.
  • the toothed belt 8 is forced to make a detour identical to that which it would make if the machine was equipped with a calender cylinder.
  • the invention it is possible to produce a new stretching group of less expensive manufacture than the existing groups currently.
  • such a group no longer requires maintenance and is no longer subject to lubricant leaks.
  • the linings of the pressure cylinders are provided and said stretching group no longer generates pulsations of said linings, pulsations which were sometimes responsible for textile defects on ribbons or wicks.
  • the moving members of the stretching unit in accordance with the invention thus reach a maximum temperature in operation much lower than that of known devices. previously.

Abstract

The invention concerns a method and a device for controlling a line of drawing rollers of a textile machine (1 and 2) mounted on bearings (6) and a pressure cylinder (3), which is pressed against the two drawing rollers (1 and 2), an optionally a calender roller (16) co-operating with a pressure cylinder (18) Said method is characterized in that it consists essentially in driving in non-slip rotation one of the drawing rollers (1) and in driving in friction rotation the other drawing roller (2). The invention is most particularly applicable in textile machines, in particular drawing and finishing machines.

Description

Procédé et dispositif de commande d'un groupe étireur d'une machine textile Method and device for controlling a stretching group of a textile machine
La présente invention concerne le domaine des machines textiles, notamment les machines d'étirage et les finisseurs et a pour objet un procédé de commande d'un groupe étireur d'une machine textile.The present invention relates to the field of textile machines, in particular drawing machines and finishers and relates to a method for controlling a drawing group of a textile machine.
L'invention a également pour objet un dispositif pour la mise en œuvre de ce procédé.The invention also relates to a device for implementing this method.
Actuellement, les groupes étireurs des machines, telles que les gills à chaînes, les intersecting à vis, les gills soleil ou à hérisson et les finisseurs, tels que les frotteurs à manchons et les bancs à broches, sont généralement constitués par un ensemble de deux cylindres métalliques cannelés appelés cylindres étireurs, contre lesquels est mis en pression un cylindre recouvert d'une garniture élastique appelé cylindre de pression.Currently, machine stretching groups, such as chain gills, screw intersecting, sun or hedgehog gills, and finishers, such as sleeve wipers and pin benches, are generally formed by a set of two fluted metal cylinders called stretching cylinders, against which is pressurized a cylinder covered with an elastic lining called a pressure cylinder.
Le cylindre étireur, qui est situé à proximité immédiate de la zone de contrôle des fibres, a un diamètre inférieur par rapport au cylindre étireur voisin, afin de réduire au minimum la distance séparant le groupe étireur de la zone de contrôle des fibres. Chaque cylindre étireur présente à son extrémité un pignon par l'intermédiaire duquel il reçoit son mouvement de rotation.The stretching cylinder, which is located in the immediate vicinity of the fiber control zone, has a smaller diameter than the neighboring stretching cylinder, in order to minimize the distance separating the stretching group from the fiber control zone. Each stretching cylinder has at its end a pinion through which it receives its rotational movement.
Un tel groupe étireur, dont la réalisation est connue depuis fort longtemps, est schématisé, par exemple, dans FR-A-1 456 485, dans lequel les pignons de chaque cylindre étireur sont reliés entre eux par un pignon intermédiaire.Such a stretching group, the production of which has been known for a very long time, is shown schematically, for example, in FR-A-1 456 485, in which the pinions of each stretching cylinder are connected together by an intermediate pinion.
Il existe également des modes de réalisation selon lesquels l'un des pignons est un pignon cloche à l'intérieur duquel engrène l'autre pignon. Par ailleurs, des réalisations plus récentes prévoient l'installation d'un carter lubrifié contenant un arbre intermédiaire à deux pignons, afin de relier les pignons des deux cylindres étireurs. Cette solution présente l'avantage d'autoriser de plus grandes vitesses de rotation des cylindres étireurs et donc d'augmenter la production des machines textiles. Elle a, par contre, l'inconvénient d'être chère, de nécessiter une parfaite étanchéité et d'entraîner un échauffement élevé des organes en mouvement.There are also embodiments according to which one of the pinions is a bell pinion inside which the other pinion meshes. In addition, more recent embodiments provide for the installation of a lubricated casing containing an intermediate shaft with two pinions, in order to connect the pinions of the two stretching cylinders. This solution has the advantage of allowing higher speeds of rotation of the stretching cylinders and therefore of increasing the production of textile machines. On the other hand, it has the disadvantage of being expensive, of requiring perfect sealing and of causing high heating of the moving parts.
En outre, dans les dispositifs connus d'entraînement en rotation des cylindres étireurs, on cherche à imposer à chacun des cylindres étireurs une même vitesse périphérique, de telle manière que le cylindre de pression qui est mis en contact avec les deux cylindres étireurs acquière également cette même vitesse périphérique. Or, il est impossible d'y parvenir parfaitement, étant donné la déformation non contrôlable du matériau élastique recouvrant le cylindre de pression. Ainsi, par exemple, de très légères différences de diamètre d'un cylindre étireur, qui sont inévitables compte tenu de la précision d'usinage et des tolérances mécaniques acceptables, engendrent de très légères différences de vitesse périphérique d'un cylindre étireur par rapport à l'autre.In addition, in known rotary drive devices stretching cylinders, it is sought to impose on each of the stretching cylinders the same peripheral speed, so that the pressure cylinder which is brought into contact with the two stretching cylinders also acquires this same peripheral speed. However, it is impossible to achieve this perfectly, given the uncontrollable deformation of the elastic material covering the pressure cylinder. Thus, for example, very slight differences in the diameter of a stretching cylinder, which are inevitable given the machining precision and acceptable mechanical tolerances, generate very slight differences in peripheral speed of a stretching cylinder with respect to the other.
Le matériau élastique du cylindre de pression doit nécessairement compenser par sa déformation ces légères différences de vitesse, ce qui entraîne un échauffement des organes en mouvement, une pulsation pouvant provoquer des défauts de régularité sur le ruban ou la mèche produite par la machine textile, une usure prématurée des garnitures des cylindres de pression, une surcharge des pignons de commande du carter lubrifié, provoquant leur usure prématurée, un échauffement et une augmentation du bruit de fonctionnement, ainsi qu'un échauffement du liquide de lubrification et une usure rapide des joints d'étanchéité, qui a pour conséquence des fuites d'huile ou de graisse fluide.The elastic material of the pressure cylinder must necessarily compensate by its deformation for these slight differences in speed, which leads to heating of the moving parts, a pulsation which can cause irregularities on the tape or the wick produced by the textile machine, a premature wear of the pressure cylinder linings, overload of the control pinions of the lubricated housing, causing their premature wear, heating and increased operating noise, as well as heating of the lubrication liquid and rapid wear of the seals sealing, which results in leakage of oil or fluid grease.
De plus, actuellement, l'opération de remplacement d'un cylindre étireur usé ou déformé nécessite le démontage du carter lubrifié ce qui est une opération longue et coûteuse.In addition, currently, the operation of replacing a worn or deformed drawing cylinder requires the disassembly of the lubricated casing, which is a long and costly operation.
La présente invention a pour but de pallier ces inconvénients en proposant un nouveau procédé de commande d'un groupe étireur d'une machine textile et un dispositif pour la mise en œuvre de ce procédé, permettant l'obtention de coûts de fabrication moindres, et des démontage et remontage rapides des cylindres étireurs.The object of the present invention is to overcome these drawbacks by proposing a new method for controlling a stretching unit of a textile machine and a device for implementing this method, enabling lower manufacturing costs to be obtained, and rapid disassembly and reassembly of the stretching cylinders.
A cet effet, le procédé de commande d'un groupe étireur d'une machine textile, comportant deux cylindres étireurs et un cylindre de pression, qui est mis en pression contre les deux cylindres étireurs, et éventuellement un cylindre calandreur coopérant avec un cylindre de pression, est caractérisé en ce qu'il consiste essentiellement à entraîner en rotation sans glissement l'un des cylindres étireurs et à entraîner en rotation par friction l'autre cylindre étireur.To this end, the method of controlling a stretching group of a textile machine, comprising two stretching cylinders and a pressure cylinder, which is pressurized against the two stretching cylinders, and possibly a calendering cylinder cooperating with a pressure, is characterized in that it consists essentially in driving in rotation without sliding one of the stretching cylinders and in rotating in friction by the other stretching cylinder.
L'invention a également pour objet un dispositif pour la mise en œuvre de ce procédé, sous forme d'un groupe étireur comportant deux cylindres étireurs et un cylindre de pression qui est mis en pression contre les deux cylindres étireurs, et éventuellement un cylindre calandreur coopérant avec un cylindre de pression, caractérisé en ce que l'un des cylindres étireurs est entraîné en rotation par une courroie crantée engrenant sur un pignon solidaire de ce premier cylindre étireur, et l'autre cylindre étireur est entraîné en rotation par un dispositif à friction.The invention also relates to a device for implementing this process, in the form of a stretching unit comprising two stretching cylinders and a pressure cylinder which is pressurized against the two stretching cylinders, and possibly a calendering cylinder cooperating with a pressure cylinder, characterized in that one of the stretching cylinders is rotated by a toothed belt meshing on a pinion integral with this first stretching cylinder, and the other stretching cylinder is rotated by a friction device.
L'invention sera mieux comprise, grâce à la description ci- après, qui se rapporte à des modes de réalisation préférés, donnés à titre d'exemples non limitatifs, et expliqués avec référence aux dessins schématiques annexés, dans lesquels : les figures 1 à 3 sont des vues en plan représentant les chaînes cinématiques de trois variantes de réalisation d'un groupe étireur conforme à l'invention ; la figure 4 est une vue en élévation latérale d'un groupe étireur conforme à l'invention, et la figure 5 est une représentation du montage d'un cylindre étireur conforme à l'invention.The invention will be better understood from the following description, which relates to preferred embodiments, given by way of nonlimiting examples, and explained with reference to the appended schematic drawings, in which: FIGS. 1 to 3 are plan views showing the kinematic chains of three alternative embodiments of a stretching group according to the invention; Figure 4 is a side elevational view of a drawing unit according to the invention, and Figure 5 is a representation of the mounting of a drawing cylinder according to the invention.
Conformément à l'invention, et comme le montrent les figures 1 à 5 des dessins annexés, le procédé de commande d'un groupe étireur d'une machine textile comportant deux cylindres étireurs 1 et 2 montés sur des paliers 6 et un cylindre de pression 3, qui est mis en pression contre les deux cylindres étireurs 1 et 2, et éventuellement un cylindre calandreur 16 coopérant avec un cylindre de pression 18, consiste essentiellement à entraîner en rotation sans glissement l'un des cylindres étireurs 1 et à entraîner en rotation par friction l'autre cylindre étireur 2.According to the invention, and as shown in Figures 1 to 5 of the accompanying drawings, the control method of a stretching group of a textile machine comprising two stretching rollers 1 and 2 mounted on bearings 6 and a pressure cylinder 3, which is put under pressure against the two stretching cylinders 1 and 2, and possibly a calendering cylinder 16 cooperating with a pressure cylinder 18, essentially consists in driving in rotation without sliding one of the stretching cylinders 1 and in driving in rotation by friction the other stretching cylinder 2.
Ce procédé est mis en œuvre par un dispositif sous forme d'un groupe étireur comportant deux cylindres étireurs 1 et 2, montés sur des paliers 6, et un cylindre de pression 3 garni d'un revêtement élastique, qui est mis en pression contre les deux cylindres étireurs 1 et 2, et éventuellement un cylindre calandreur 16 coopérant avec un cylindre de pression 18.This process is implemented by a device in the form of a stretching group comprising two stretching cylinders 1 and 2, mounted on bearings 6, and a pressure cylinder 3 provided with an elastic coating, which is put under pressure against the two stretching cylinders 1 and 2, and possibly a calendering cylinder 16 cooperating with a pressure cylinder 18.
Le premier cylindre étireur 1 présente un diamètre inférieur au second cylindre étireur 2, afin que la distance séparant la zone de contrôle 4 des fibres et la ligne de pinçage des fibres, constituée par la zone de contact du cylindre de pression 3 contre le cylindre étireur 1, soit la plus faible possible. Les cylindres étireurs 1 et 2 sont cannelés hélicoïdalement et sont montés sur des roulements 5 (figure 5) à l'intérieur de paliers 6 solidaires du bâti de la machine.The first stretching cylinder 1 has a smaller diameter than the second stretching cylinder 2, so that the distance separating the control zone 4 of the fibers and the pinching line of the fibers, constituted by the contact zone of the pressure cylinder 3 against the stretching cylinder 1, which is as low as possible. The stretching cylinders 1 and 2 are fluted helically and are mounted on bearings 5 (FIG. 5) inside bearings 6 which are integral of the machine frame.
Le premier cylindre étireur 1 présente à une de ses extrémités, un pignon cranté 7 mis en rotation par l'intermédiaire d'une courroie crantée 8, elle-même entraînée par un pignon cranté 9 entraîné en rotation par un moteur 10, par l'intermédiaire d'une chaîne cinématique (non représentée).The first stretching cylinder 1 has at one of its ends, a toothed pinion 7 rotated by means of a toothed belt 8, itself driven by a toothed pinion 9 driven in rotation by a motor 10, by the intermediate of a kinematic chain (not shown).
Conformément à l'invention, l'un des cylindres étireurs 1 est entraîné en rotation par une courroie crantée 8, engrenant sur un pignon 7 solidaire de ce premier cylindre étireur 1, et l'autre cylindre étireur 2 est entraîné en rotation par un dispositif à friction.According to the invention, one of the stretching cylinders 1 is rotated by a toothed belt 8, meshing on a pinion 7 integral with this first stretching cylinder 1, and the other stretching cylinder 2 is rotated by a device friction.
Selon un premier mode de réalisation de l'invention et comme le montrent les figures 1, 2 et 4 des dessins annexés, le dispositif à friction se présente sous forme d' une courroie non crantée 12 entraînant en rotation une poulie lisse 11 solidaire du second cylindre étireur 2. Ainsi, comme l'entraînement réalisé par coopération d'une courroie non crantée 12 avec une poulie lisse 11 n'est pas parfaitement positif, de légers glissements de l'un sur l'autre sont autorisés et absorbés par la courroie non crantée 12 et non par la garniture du cylindre de pression 3. Les dimensions et les caractéristiques de la courroie non crantée 12 et de la poulie 11 sont déterminées de telle manière que le ou les cylindres étireurs 2 soient entraînés presque positivement, c'est-à-dire de sorte que, dès qu'il y a une différence de vitesse périphérique de l'un des cylindres étireurs 1 par rapport à l'autre 2 ou par rapport au cylindre de pression 3, ce soit la courroie 12 elle-même qui glisse sur sa poulie 11 et absorbe la différence de vitesse et non pas la garniture du cylindre de pression 3.According to a first embodiment of the invention and as shown in Figures 1, 2 and 4 of the accompanying drawings, the friction device is in the form of an notched belt 12 rotating in rotation a smooth pulley 11 secured to the second stretching cylinder 2. Thus, as the drive carried out by cooperation of an notched belt 12 with a smooth pulley 11 is not perfectly positive, slight sliding of one over the other is authorized and absorbed by the belt non-toothed 12 and not by the lining of the pressure cylinder 3. The dimensions and characteristics of the non-toothed belt 12 and the pulley 11 are determined in such a way that the stretching cylinder or cylinders 2 are driven almost positively, that is that is, as soon as there is a difference in peripheral speed of one of the stretching cylinders 1 relative to the other 2 or relative to the pressure cylinder 3, it is the belt 12 ell itself which slides on its pulley 11 and absorbs the difference in speed and not the lining of the pressure cylinder 3.
Le second cylindre étireur 2 présente à une de ses extrémités une poulie de préférence lisse 11 et à jante bombée, mise en rotation par l'intermédiaire d'une courroie non crantée, de préférence une courroie plate 12 elle-même entraînée par une poulie intermédiaire 13 montée sur un axe intermédiaire 14. Sur ce même axe intermédiaire 14 est monté un pignon cranté intermédiaire 15 entraîné en rotation par la courroie crantée 8.The second stretching cylinder 2 has at one of its ends a pulley preferably smooth 11 and with a domed rim, rotated by means of an notched belt, preferably a flat belt 12 itself driven by an intermediate pulley 13 mounted on an intermediate axis 14. On this same intermediate axis 14 is mounted an intermediate toothed pinion 15 driven in rotation by the toothed belt 8.
Ainsi le moteur 10 entraîne positivement et sans glissement possible le premier cylindre étireur 1, alors que le second cylindre étireur 2 est entraîné par le dispositif à friction qui est constitué par les poulies lisses 11 et 13 et la courroie non crantée 12.Thus the motor 10 drives the first stretching cylinder 1 positively and without possible sliding, while the second stretching cylinder 2 is driven by the friction device which consists of the smooth pulleys 11 and 13 and the non-toothed belt 12.
Le dispositif à friction agit dès qu'une légère différence de vitesse périphérique tend à apparaître entre le cylindre de pression 3 et le second cylindre étireur 2 en permettant à la courroie non crantée 12 de glisser sur l'une des poulies lisses 11 ou 13. Il en résulte que la courroie non crantée 12 absorbe l'énergie de glissement provoquée par de légères différences de vitesse d'un organe par rapport à l'autre, le revêtement du cylindre de pression 3 étant alors préservé.The friction device acts as soon as a slight difference in peripheral speed tends to appear between the pressure cylinder 3 and the second stretching cylinder 2 by allowing the non-toothed belt 12 to slide on one of the smooth pulleys 11 or 13. As a result, the non-toothed belt 12 absorbs the sliding energy caused by slight differences in speed of one member with respect to the other, the coating of the pressure cylinder 3 then being preserved.
La figure 4 des dessins annexés est une vue en élévation latérale d'un groupe étireur conforme à l'invention.Figure 4 of the accompanying drawings is a side elevational view of a stretching unit according to the invention.
La tension de la courroie non crantée 12 est réglable par modification de la distance entre axes des poulies lisses 11 et 13. A cet effet, la poulie lisse 13 est solidaire de l'axe 14 monté sur roulement à l'intérieur d'un palier 20 articulé autour d'un axe d'articulation 21. Ainsi, le palier articulé 20 peut osciller autour de l'axe d'articulation 21 et se déplacer par rapport au bâti de la machine, de manière à modifier la distance entre axes de la poulie lisse 13 par rapport à la poulie lisse 11. Un moyen de verrouillage 22, tel qu'un ensemble à vis et écrou, permet au palier 20 de garder une position stable par rapport au bâti de la machine.The tension of the notched belt 12 is adjustable by modifying the distance between the axes of the smooth pulleys 11 and 13. For this purpose, the smooth pulley 13 is integral with the axis 14 mounted on a bearing inside a bearing 20 articulated around an axis of articulation 21. Thus, the articulated bearing 20 can oscillate around the axis of articulation 21 and move relative to the frame of the machine, so as to modify the distance between axes of the smooth pulley 13 relative to the smooth pulley 11. A locking means 22, such as a screw and nut assembly, allows the bearing 20 to keep a stable position relative to the frame of the machine.
La tension de la courroie crantée 8 est également réglable au moyen d'un tendeur 23, dont la position est modifiable par rapport au bâti de la machine. Pour assurer un fonctionnement correct du dispositif à friction, on commence par régler la tension de la courroie non crantée 12, puis on règle la tension de la courroie crantée 8.The tension of the toothed belt 8 is also adjustable by means of a tensioner 23, the position of which can be modified relative to the frame of the machine. To ensure correct operation of the friction device, the tension of the non-toothed belt 12 is first adjusted, then the tension of the toothed belt 8 is adjusted.
Selon une autre variante de réalisation de l'invention, non représentée aux dessins annexés, la courroie non crantée 12 peut également être entraînée directement par l'intermédiaire du cylindre calandreur 16, la poulie intermédiaire 13 étant alors montée sur l'axe de ce dernier et la tension de ladite courroie non crantée 12 étant assurée par l'intermédiaire d'un galet tendeur situé sur le parcours de ladite courroie. Dans un tel mode de réalisation, le palier 20, l'articulation 21 et le moyen de verrouillage 22 sont supprimés. Conformément à une autre variante de réalisation de l'invention, le dispositif à friction peut être constitué par le contact entre le cylindre de pression 3 et les cylindres étireurs 1 et 2 (figure 3).According to another alternative embodiment of the invention, not shown in the accompanying drawings, the notched belt 12 can also be driven directly by means of the calender cylinder 16, the intermediate pulley 13 then being mounted on the axis of the latter and the tension of said non-toothed belt 12 being ensured by means of a tension roller located on the path of said belt. In such an embodiment, the bearing 20, the articulation 21 and the locking means 22 are eliminated. According to another alternative embodiment of the invention, the friction device can be constituted by the contact between the pressure cylinder 3 and the stretching cylinders 1 and 2 (FIG. 3).
Dans ce cas, le premier cylindre étireur 1 est mis en rotation sans glissement par l'intermédiaire d'une courroie crantée 8 et d'un pignon cranté 7 solidaire du cylindre étireur 1. La courroie crantée 8 coopère avec le pignon cranté 9, comme indiqué plus haut. Le premier cylindre étireur 1 transmet, par contact de surface, son mouvement de rotation au cylindre de pression 3. Ce dernier transmet alors le mouvement de rotation, également par contact de surface, au second cylindre étireur 2. Ainsi, le second cylindre étireur 2 acquière la même vitesse périphérique que celle du cylindre de pression 3. Selon une autre caractéristique de l'invention et comme le montre la figure 5 des dessins annexés, au moins un des cylindres composant le groupe étireur est monté sur des paliers 6 à chapeaux amovibles, afin de faciliter le démontage et le remontage dudit cylindre étireur. A cet effet, selon une autre caractéristique de l'invention, chaque palier 6 se compose d'un support 24a solidaire du bâti de la machine et d'un chapeau amovible 24b. Le support 24a et le chapeau amovible 24b présentent chacun une portée semi-cylindrique de roulement ajustée au diamètre extérieur du roulement 5. Ainsi, il devient possible de démonter et remonter rapidement et facilement les cylindres étireurs 1 et 2, lorsqu'ils sont usés ou déformés, sans avoir à les retirer axialement.In this case, the first stretching cylinder 1 is rotated without sliding by means of a toothed belt 8 and a toothed pinion 7 secured to the stretching cylinder 1. The toothed belt 8 cooperates with the toothed pinion 9, as indicated above. The first stretching cylinder 1 transmits, by surface contact, its rotational movement to the pressure 3. The latter then transmits the rotational movement, also by surface contact, to the second stretching cylinder 2. Thus, the second stretching cylinder 2 acquires the same peripheral speed as that of the pressure cylinder 3. According to another characteristic of the invention and as shown in Figure 5 of the accompanying drawings, at least one of the cylinders comprising the stretching group is mounted on bearings 6 with removable caps, to facilitate disassembly and reassembly of said stretching cylinder. To this end, according to another characteristic of the invention, each bearing 6 consists of a support 24a secured to the frame of the machine and a removable cap 24b. The support 24a and the removable cap 24b each have a semi-cylindrical bearing surface adjusted to the outside diameter of the bearing 5. Thus, it becomes possible to disassemble and reassemble quickly and easily the stretching cylinders 1 and 2, when they are worn or deformed, without having to remove them axially.
En effet, dans l'état actuel de la technique, étant donné l'existence de carters lubrifiés, il est nécessaire de retirer axialement les cylindres étireurs de leurs paliers après avoir démonté lesdits carters lubrifiés. Cette opération longue et fastidieuse est indispensable lorsque les cylindres étireurs sont usés ou tordus.Indeed, in the current state of the art, given the existence of lubricated casings, it is necessary to axially withdraw the stretching cylinders from their bearings after having dismantled said lubricated casings. This long and tedious operation is essential when the stretching cylinders are worn or twisted.
Lorsque le chapeau amovible 24b est désolidarisé de son support 24a, le retrait radial du cylindre étireur 1 ou 2 avec les roulements 5 correspondants devient possible. L'intervention de remplacement de cylindres étireurs s'en trouve facilitée et les temps d'arrêt machine sont réduits.When the removable cap 24b is detached from its support 24a, the radial withdrawal of the stretching cylinder 1 or 2 with the corresponding bearings 5 becomes possible. This makes it easier to replace stretching cylinders and reduce machine downtime.
Selon une autre caractéristique de l'invention, lorsque la machine textile est équipée d'un cylindre calandreur 16 coopérant avec un cylindre de pression 18, la courroie crantée 8 engrène, en outre, avec un pignon cranté 17 monté à une extrémité dudit cylindre calandreur 16. Un tel cylindre calandreur 16, qui est cannelé hélicoïdalement, est monté sur des roulements à l'intérieur de paliers solidaires du bâti de la machine, de la même manière que les cylindres étireurs 1 et 2. Le cylindre de pression 18, qui est mis en pression contre le cylindre calandreur 16, acquière la même vitesse périphérique que celle du cylindre calandreur 16.According to another characteristic of the invention, when the textile machine is equipped with a calender cylinder 16 cooperating with a pressure cylinder 18, the toothed belt 8 meshes, in addition, with a toothed pinion 17 mounted at one end of said calender cylinder 16. Such a calendering cylinder 16, which is helically grooved, is mounted on bearings inside bearings integral with the frame of the machine, in the same way as the stretching cylinders 1 and 2. The pressure cylinder 18, which is put under pressure against the calendering cylinder 16, acquires the same peripheral speed as that of the calendering cylinder 16.
En fonction de la qualité de la matière textile que la machine doit travailler, il est nécessaire de pouvoir ajuster la vitesse périphérique du cylindre calandreur 16 par rapport à celle du groupe étireur. En effet, dans certains cas, la matière textile doit être plus ou moins tendue, voire parfois même détendue entre le groupe étireur et le cylindre calandreur.Depending on the quality of the textile material that the machine has to work, it is necessary to be able to adjust the peripheral speed of the calendering cylinder 16 relative to that of the stretching unit. Indeed, in certain cases, the textile material must be more or less stretched, or sometimes even relaxed between the stretching group and the calender roll.
Aussi, la tension, c'est-à-dire le rapport de vitesse périphérique du cylindre calandreur par rapport au groupe étireur, est modifiable par changement du pignon cranté 17. La précision de ce réglage dépend du nombre de dents du pignon 17.Also, the tension, that is to say the peripheral speed ratio of the calendering cylinder relative to the stretching group, can be modified by changing the toothed pinion 17. The precision of this adjustment depends on the number of teeth of the pinion 17.
Selon une autre caractéristique de l'invention et comme le montre la figure 2 des dessins annexés, lorsque la machine textile est équipée d'un cylindre calandreur 16 coopérant avec un cylindre de pression 18, le cylindre calandreur 16 peut être entraîné par friction, par prévision à l'une de ses extrémités d'une poulie lisse 19 entraînée en rotation par la courroie non crantée 12. Dans ce cas, la tension, c'est-à-dire le rapport de vitesse périphérique du cylindre calandreur 16 par rapport au groupe étireur, est également modifiable par changement de la poulie lisse 19. La précision de ce réglage est plus fine, car elle dépend du diamètre de la poulie lisse 19 et non d'un nombre entier de dents.According to another characteristic of the invention and as shown in FIG. 2 of the accompanying drawings, when the textile machine is equipped with a calender cylinder 16 cooperating with a pressure cylinder 18, the calender cylinder 16 can be driven by friction, by provision at one of its ends for a smooth pulley 19 rotated by the notched belt 12. In this case, the tension, that is to say the peripheral speed ratio of the calender cylinder 16 relative to the stretching group, is also modifiable by changing the smooth pulley 19. The precision of this adjustment is finer, because it depends on the diameter of the smooth pulley 19 and not on a whole number of teeth.
Selon une autre caractéristique de l'invention, non représentée aux dessins annexés, lorsque la machine textile ne dispose pas de cylindre calandreur, la courroie crantée 8 coopère avec un pignon cranté 17 monté libre en rotation dans un palier sur le bâti de la machine, en position excentrée par rapport à une droite reliant les axes des poulies lisses 11 et 13. Ainsi, la courroie crantée 8 est contrainte de réaliser un détour identique à celui qu'elle effectuerait si la machine était équipée d'un cylindre calandreur.According to another characteristic of the invention, not shown in the accompanying drawings, when the textile machine does not have a calender cylinder, the toothed belt 8 cooperates with a toothed pinion 17 mounted to rotate freely in a bearing on the frame of the machine, in an eccentric position with respect to a straight line connecting the axes of the smooth pulleys 11 and 13. Thus, the toothed belt 8 is forced to make a detour identical to that which it would make if the machine was equipped with a calender cylinder.
Grâce à l'invention, il est possible de réaliser un nouveau groupe étireur de fabrication moins coûteuse que les groupes existants actuellement. En outre, un tel groupe ne nécessite plus d'entretien et n'est plus sujet à des fuites de lubrifiant. De plus, il devient possible de choisir librement les diamètres des poulies et des cylindres, de façon à les adapter précisément à la vitesse périphérique souhaitée, sans avoir à dépendre d'un rapport de nombre de dents. Enfin, les garnitures des cylindres de pression sont ménagées et ledit groupe étireur n'engendre plus de pulsations desdites garnitures, pulsations qui étaient parfois responsables de défauts textiles sur rubans ou mèches. De plus, on constate que les organes en mouvement du groupe étireur conforme à l'invention, atteignent ainsi en fonctionnement une température maximale très inférieure à celle des dispositifs connus précédemment.Thanks to the invention, it is possible to produce a new stretching group of less expensive manufacture than the existing groups currently. In addition, such a group no longer requires maintenance and is no longer subject to lubricant leaks. In addition, it becomes possible to freely choose the diameters of the pulleys and cylinders, so as to precisely adapt them to the desired peripheral speed, without having to depend on a ratio of number of teeth. Finally, the linings of the pressure cylinders are provided and said stretching group no longer generates pulsations of said linings, pulsations which were sometimes responsible for textile defects on ribbons or wicks. In addition, it can be seen that the moving members of the stretching unit in accordance with the invention thus reach a maximum temperature in operation much lower than that of known devices. previously.
Le temps d'intervention pour un remplacement des cylindres étireurs endommagés est réduit ce qui entraîne une amélioration du rendement de la machine textile. En outre, un tel groupe étireur permet une augmentation des vitesses de production et donc des performances de la machine.The intervention time for replacing damaged stretching cylinders is reduced, which leads to an improvement in the performance of the textile machine. In addition, such a stretching group allows an increase in production speeds and therefore in machine performance.
Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et représentés aux dessins annexés. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention. Of course, the invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.

Claims

RE V E N D I C A T I O N S RE CLAIMS
1. Procédé de commande d'un groupe étireur d'une machine textile comportant deux cylindres étireurs (1 et 2) montés sur des paliers (6) et un cylindre de pression (3), qui est mis en pression contre les deux cylindres étireurs (1 et 2), et éventuellement un cylindre calandreur (16) coopérant avec un cylindre de pression (18) caractérisé en ce qu'il consiste essentiellement à entraîner en rotation sans glissement l'un des cylindres étireurs (1) et à entraîner en rotation par friction l'autre cylindre étireur (2).1. Method for controlling a stretching group of a textile machine comprising two stretching cylinders (1 and 2) mounted on bearings (6) and a pressure cylinder (3), which is pressurized against the two stretching cylinders (1 and 2), and possibly a calendering cylinder (16) cooperating with a pressure cylinder (18) characterized in that it essentially consists in driving in rotation without sliding one of the stretching cylinders (1) and in driving friction rotation of the other stretching cylinder (2).
2. Dispositif pour la mise en œuvre du procédé suivant la revendication 1, sous forme d'un groupe étireur comportant deux cylindres étireurs (1 et 2), montés sur des paliers (6), et un cylindre de pression (3), qui est mis en pression contre les deux cylindres étireurs (1 et 2), et éventuellement un cylindre calandreur (16) coopérant avec un cylindre de pression (18), caractérisé en ce que l'un des cylindres étireurs (1) est entraîné en rotation par une courroie crantée (8) engrenant sur un pignon (7) solidaire de ce premier cylindre étireur (1), et l'autre cylindre étireur (2) est entraîné en rotation par un dispositif à friction.2. Device for implementing the method according to claim 1, in the form of a stretching group comprising two stretching cylinders (1 and 2), mounted on bearings (6), and a pressure cylinder (3), which is put under pressure against the two stretching cylinders (1 and 2), and possibly a calendering cylinder (16) cooperating with a pressure cylinder (18), characterized in that one of the stretching cylinders (1) is rotated by a toothed belt (8) meshing on a pinion (7) integral with this first stretching cylinder (1), and the other stretching cylinder (2) is rotated by a friction device.
3. Dispositif, suivant la revendication 2, caractérisé en ce que le dispositif à friction se présente sous forme d'une courroie non crantée (12) entraînant en rotation une poulie lisse (11) solidaire du second cylindre étireur (2).3. Device according to claim 2, characterized in that the friction device is in the form of an notched belt (12) driving in rotation a smooth pulley (11) integral with the second stretching cylinder (2).
4. Dispositif, suivant l'une quelconque des revendications 1 et 2, caractérisé en ce que le second cylindre étireur (2) présente à une de ses extrémités une poulie de préférence lisse (11) et à jante bombée, mise en rotation par l'intermédiaire d'une courroie non crantée, de préférence une courroie plate (12) elle-même entraînée par une poulie intermédiaire (13) montée sur un axe intermédiaire (14).4. Device according to any one of claims 1 and 2, characterized in that the second stretching cylinder (2) has at one of its ends a pulley preferably smooth (11) and with a curved rim, rotated by the 'Intermediate of an notched belt, preferably a flat belt (12) itself driven by an intermediate pulley (13) mounted on an intermediate axis (14).
5. Dispositif, suivant la revendication 4, caractérisé en ce que sur l'axe intermédiaire (14) est monté un pignon cranté intermédiaire (15) entraîné en rotation par la courroie crantée (8). 5. Device according to claim 4, characterized in that on the intermediate axis (14) is mounted an intermediate toothed pinion (15) driven in rotation by the toothed belt (8).
6. Dispositif, suivant la revendication 4, caractérisé en ce que la poulie lisse (13) est solidaire de l'axe (14) monté sur roulement à l'intérieur d'un palier (20) articulé autour d'un axe d'articulation (21).6. Device according to claim 4, characterized in that the smooth pulley (13) is integral with the axis (14) mounted on a bearing inside a bearing (20) articulated around an axis of articulation (21).
7. Dispositif, suivant l'une quelconque des revendications 2, 4 et 5, caractérisé en ce que la tension de la courroie crantée (8) est réglable au moyen d'un tendeur (23), dont la position est modifiable par rapport au bâti de la machine.7. Device according to any one of claims 2, 4 and 5, characterized in that the tension of the toothed belt (8) is adjustable by means of a tensioner (23), the position of which can be modified relative to the frame of the machine.
8. Dispositif, suivant l'une quelconque des revendications 1 et 3, caractérisé en ce que, lorsque la machine textile est équipée d'un cylindre calandreur (16) coopérant avec un cylindre de pression (18), la courroie non crantée (12) est entraînée directement par l'intermédiaire du cylindre calandreur (16), la poulie intermédiaire (13) étant montée sur l'axe de ce dernier et la tension de ladite courroie non crantée (12) étant assurée par l'intermédiaire d'un galet tendeur situé sur le parcours de ladite courroie. 8. Device according to any one of claims 1 and 3, characterized in that, when the textile machine is equipped with a calender cylinder (16) cooperating with a pressure cylinder (18), the non-toothed belt (12 ) is driven directly by the calender cylinder (16), the intermediate pulley (13) being mounted on the axis of the latter and the tension of said non-toothed belt (12) being ensured by means of a tensioner roller located on the path of said belt.
9. Dispositif, suivant la revendication 2, caractérisé en ce que le dispositif à friction est constitué par le contact entre le cylindre de pression (3) et les cylindres étireurs (1 et 2).9. Device according to claim 2, characterized in that the friction device is constituted by the contact between the pressure cylinder (3) and the stretching cylinders (1 and 2).
10. Dispositif, suivant la revendication 2, caractérisé en ce qu'au moins un des cylindres composant le groupe étireur est monté sur des paliers (6) à chapeaux amovibles.10. Device according to claim 2, characterized in that at least one of the cylinders making up the stretching group is mounted on bearings (6) with removable caps.
11. Dispositif, suivant la revendication 10, caractérisé en ce que chaque palier (6) se compose d'un support (24a) solidaire du bâti de la machine et d'un chapeau amovible (24b).11. Device according to claim 10, characterized in that each bearing (6) consists of a support (24a) integral with the frame of the machine and a removable cap (24b).
12. Dispositif, suivant la revendication 2, caractérisé en ce que, lorsque la machine textile est équipée d'un cylindre calandreur (16) coopérant avec un cylindre de pression (18), la courroie crantée (8) engrène, en outre, avec un pignon cranté (17) monté à une extrémité dudit cylindre calandreur (16).12. Device according to claim 2, characterized in that, when the textile machine is equipped with a calendering cylinder (16) cooperating with a pressure cylinder (18), the toothed belt (8) further meshes with a notched pinion (17) mounted at one end of said calendering cylinder (16).
13. Dispositif, suivant la revendication 2, caractérisé en ce que, lorsque la machine textile est équipée d'un cylindre calandreur (16) coopérant avec un cylindre de pression (18), le cylindre calandreur (16) est entraîné par friction, par prévision à l'une de ses extrémités d'une poulie lisse (19) entraînée en rotation par la courroie non crantée (12).13. Device according to claim 2, characterized in that, when the textile machine is equipped with a calender cylinder (16) cooperating with a pressure cylinder (18), the calender cylinder (16) is driven by friction, by provision at one of its ends for a smooth pulley (19) driven in rotation by the non-toothed belt (12).
14. Dispositif, suivant la revendication 2, caractérisé en ce que, lorsque la machine textile ne dispose pas de cylindre calandreur, la courroie crantée (8) coopère avec un pignon cranté (17) monté libre en rotation dans un palier sur le bâti de la machine, en position excentrée par rapport à une droite reliant les axes des poulies lisses (11 et 13). 14. Device according to claim 2, characterized in that, when the textile machine does not have a calendering cylinder, the toothed belt (8) cooperates with a toothed pinion (17) mounted free in rotation in a bearing on the frame of the machine, in an eccentric position with respect to a straight line connecting the axes of the smooth pulleys (11 and 13).
EP02802534A 2001-12-05 2002-12-03 Method and device for controlling a line of drawing rollers of a textile machine Expired - Lifetime EP1451397B1 (en)

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FR0115734A FR2833021B1 (en) 2001-12-05 2001-12-05 METHOD AND DEVICE FOR CONTROLLING A DRAWER GROUP OF A TEXTILE MACHINE
FR0115734 2001-12-05
PCT/FR2002/004161 WO2003050334A1 (en) 2001-12-05 2002-12-03 Method and device for controlling a line of drawing rollers of a textile machine

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Also Published As

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RU2004120271A (en) 2005-03-10
WO2003050334A1 (en) 2003-06-19
CN1599811A (en) 2005-03-23
RU2293805C2 (en) 2007-02-20
EP1451397B1 (en) 2006-02-01
FR2833021B1 (en) 2004-05-28
AU2002364920A1 (en) 2003-06-23
FR2833021A1 (en) 2003-06-06
CN100344812C (en) 2007-10-24

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