EP0638683A2 - Fabric spreader for finishing machines - Google Patents

Fabric spreader for finishing machines Download PDF

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Publication number
EP0638683A2
EP0638683A2 EP94440044A EP94440044A EP0638683A2 EP 0638683 A2 EP0638683 A2 EP 0638683A2 EP 94440044 A EP94440044 A EP 94440044A EP 94440044 A EP94440044 A EP 94440044A EP 0638683 A2 EP0638683 A2 EP 0638683A2
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EP
European Patent Office
Prior art keywords
shaft
expander according
fabric
bearing
rollers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP94440044A
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German (de)
French (fr)
Other versions
EP0638683A3 (en
Inventor
Erwin Vogrin
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.)
EXPLOITATION des Ets WELKER ET FILS SARL Ste
INNOVATION PROCESS VOGRIN SA
Original Assignee
EXPLOITATION des Ets WELKER ET FILS SARL Ste
INNOVATION PROCESS VOGRIN SA
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.)
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Application filed by EXPLOITATION des Ets WELKER ET FILS SARL Ste, INNOVATION PROCESS VOGRIN SA filed Critical EXPLOITATION des Ets WELKER ET FILS SARL Ste
Publication of EP0638683A2 publication Critical patent/EP0638683A2/en
Publication of EP0638683A3 publication Critical patent/EP0638683A3/en
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
    • D06C3/06—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics by rotary disc, roller, or like apparatus
    • D06C3/067—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics by rotary disc, roller, or like apparatus by curved rollers

Definitions

  • the present invention relates to a fabric expander for a finishing and processing machine, in particular for dyeing by immersion in a bath of dye liquid, comprising a fixed shaft with a curved or polygonal longitudinal profile, a row of rotary rollers substantially coaxial with said shaft and mounted by means of bearings to form a rotary tubular support, a flexible and watertight tubular casing surrounding the tubular support, and two watertight rotary end caps fixed at the two ends of the tubular casing and supported by the shaft, each rotary end cap being provided with 'at least one bearing and sealing means.
  • an important function of the two rotary nozzles is to seal at both ends of the tubular casing flexible, which is usually rubber. This is to avoid that the treatment liquids can penetrate inside the envelope and reach the steel elements which it contains, in particular the shaft, the rollers and especially the ball bearings, because the liquids in question are generally hot and aggressive.
  • These include acid dye liquids, solvents, soda solutions, etc.
  • the ends of a fabric expander have a rotary body of metal or synthetic material, fitted into the tubular rubber casing, the end of which is fixed around the body of the end piece by tightening by means of a necklace.
  • This method of attachment tends to create folds in the envelope and in addition the rubber tends to slide little by little in the collar, because of the alternating traction due to the longitudinal curvature of the expander.
  • the seal along the fixed shaft is ensured, inside the nozzle, by an O-ring which turns while sliding on the shaft. This sealing device degrades fairly quickly under the harsh conditions in which the expander works and ends up allowing liquid to ooze inside, even when the expander does not work in immersion.
  • the object of the present invention is to improve a widener of this kind and to save on the operating costs of the machine, by providing the widener with end caps which ensure better sealing and have a longer duration. than traditional tips, with maintenance operations that are simple and inexpensive.
  • each rotary end piece comprise a cable gland, located between the bearing and an outer end of the end piece, and a crown of fins disposed on said outer end near the shaft for expelling radially by centrifugal effect any fluid in contact with said outer end.
  • each of the fins may advantageously have rectilinear generators parallel to the shaft, so that they are easy to manufacture.
  • each of the fins has a radial profile inclined relative to a radial direction of the crown of fins.
  • the crown of fins is arranged on an external front face of a gland nut.
  • This gland nut may comprise, facing the shaft, a cylindrical sealing surface, provided with at least one annular groove containing an O-ring applied to the shaft.
  • each end piece has an annular body in which are mounted its bearing and its cable gland, said body having a peripheral sealing surface on which the corresponding end of the flexible tubular casing is pressed by clamping means.
  • said peripheral sealing surface is divergent towards the outer end of the end piece, so that the end of the flexible tubular casing is flared by said surface.
  • the clamping means may comprise a clamping sleeve arranged to be screwed axially on a peripheral thread of the body and provided with an internal bearing surface or with a ring having such a surface, opposite said peripheral sealing surface. from the body.
  • said peripheral sealing surface and said bearing surface are conical and substantially parallel to each other.
  • the body of the end piece comprises two concentric annular elements assembled by screwing in an axial direction from one element to the other, said elements comprising an internal element in which the bearing and the gland are mounted. , and an external element having said peripheral sealing surface and supporting the clamping sleeve.
  • a lubrication duct may extend through the body of the end piece, between an external front surface of the end piece and the bearing.
  • the rotary tubular support may include intermediate junction elements, each of which is mounted on the shaft by a bearing and supports a respective end of two adjacent rollers, and each of said intermediate elements and said ends of the rollers which it supports have complementary interlocking shapes which make them integral in rotation and allow axial play.
  • each roller is a cylindrical tubular element, each end of which is fitted with an axial clearance on one of the intermediate elements or on one of the end pieces, each intermediate element has a cylindrical external surface substantially of the same external diameter as the rollers.
  • said complementary interlocking shapes comprise substantially rectangular recesses, formed in said outer surface of each intermediate element, and corresponding teeth formed by cutting out said end of the rollers and fitted respectively in said recesses.
  • the fabric expander shown schematically in Figure 1 comprises a fixed cylindrical shaft 1 curved longitudinally and mounted by supports 2 on a frame 3 of an enclosure 4 of a dyeing machine. Rollers 5 are rotatably mounted on the shaft 1, by means of intermediate bearing elements 6 and two rotary end pieces 7. These rollers form a tubular support with a polygonal longitudinal profile, which is coated with an envelope flexible tubular 8 whose ends are fixed to the end pieces 7 in a sealed manner.
  • the fabric to be treated passes over the convex side of the expander, which it drives in rotation by friction on the envelope 8.
  • FIG. 2 represents one of the end pieces 7 of the fabric expander according to the invention.
  • This end piece comprises a metallic annular body 11 crossed by a straight end of the fixed shaft 1 and supported by the latter by a ball bearing 12.
  • the bearing 12 is mounted on a bush 13 and wedged between a shoulder 14 of this sleeve and a retaining ring 15, the sleeve and the ring being locked by means of one or more screws 16 engaged in the shaft 1.
  • the body 11 has a beveled end 17 on which is fitted the corresponding end of the first roller 5 surrounded by the tubular rubber casing 8.
  • the end 18 of this casing is flared by application to a conical sealing surface 19 of the body 11, where it is pressed by means of an outer threaded sleeve 20 provided with an inner ring 21 having a conical surface 22 parallel to the surface 19.
  • the tightening is effected by axial displacement of the sleeve 20 on a peripheral thread 23 of the body 11.
  • stuffing box 25 This stuffing box comprises for example two disc-shaped packings 26, housed in a cylindrical bore of the body 11, and a tightening nut 27 engaged in a thread 28 of said bore.
  • Blind holes 29 ( Figure 3) are provided on the outer front face 30 of the nut 27 to be able to rotate it by means of an appropriate key.
  • this face 30 of the nut 27 carries a ring of axial fins 31 which are arranged at an angle with respect to the radial planes of the nut, preferably at an angle of approximately 35 °, to have an effect of centrifugal impeller when the nozzle 7 rotates around the shaft 1 in the direction of arrow A in the figure 3.
  • Each fin 31 has a beveled front edge 32 near the shaft 1.
  • the cable gland 25 When the expander does not rotate, the cable gland 25 provides sufficient sealing.
  • one or more O-rings 33 can be provided on the inner cylindrical surface of the nut 27. The presence of these seals, as well as that of the fins 31, makes it possible to reduce the tightening force of the packings 26 of the cable gland and therefore extend their service life, without loss of tightness.
  • An O-ring 11 ′ is also provided at the entry of the thread 23 to seal between the sleeve 20 and the body 11.
  • FIG. 2 it can be seen that it is possible to easily change the linings 26 of the cable gland 25 if they are worn, by simply unscrewing the nut 27, without it being necessary to dismantle any other element of the tip 7. This saves not only the cost of the parts to be changed, but also the labor for maintenance work and the downtime of the expander. Tests have shown that the service life of such a tip is much greater than that of an O-ring tip according to the prior art. In particular, the bearing 12 is much better protected against corrosion, thanks to a more effective seal.
  • FIG. 4 illustrates a variant in which the annular body 11 of the end piece 7 shown in FIG. 2 is made in two parts concentric, namely an inner annular element 11a and an outer annular element 11b which is screwed axially on an external thread 35 of the element 11a.
  • the internal element 11a assures the fitting 7 on the shaft 1, by means of the bearing 12 and the sealing means, and it supports the first roller 5, as in the case of FIG. 2.
  • the element exterior 11b ensures, in cooperation with the threaded sleeve 20, the fixing of the end 18 of the tubular rubber casing 8, pressed between the conical surfaces 19 of the body and 22 of the sleeve.
  • This embodiment of the body in two elements has the advantage of facilitating the positioning of the sleeve 20 and the tightening of the end 18 of the tubular casing. It is further provided, through the elements 11a and 11b, a lubrication conduit 36 between the outer end of the body and the bearing 12, which makes it possible to lubricate the bearing without dismantling the end piece.
  • a conventional lubricator (not shown) can be screwed into the external outlet 37 of the conduit 36.
  • This lubrication conduit could also be provided through the body 11 of FIG. 2. The seal at the threads 23 and 35 is ensured by O-rings 11a 'and 11b'.
  • FIGS. 5 and 6 illustrate a preferred embodiment of the rollers 5 and the intermediate elements 6 forming the rotary tubular support which supports the flexible tubular casing 8 of the fabric expander.
  • the envelope and its support are rotated by the friction of the fabric passing under tension on the expander.
  • the flexible envelope 8, which is free between these two ends held in the end pieces 7, then tends to slide in the circumferential direction on the rollers 5, so that it is subjected to torsional forces which may cause in the long run rubber cracks and breaks. Even when these breaks are minimal, this results in a leak which can lead to rapid deterioration of the metallic members of the expander.
  • This drawback is avoided with the construction illustrated in FIGS. 5 and 6, which makes the rollers 5 integral in rotation with one another and thus reduces the relative sliding of the casing 8 on some of these rollers, in particular those which are distant from the end caps 7 where the casing is fixed.
  • coupling means are provided between the rollers 5, so as to make them integral in rotation, while leaving sufficient axial play for the slight angular deviation existing between two adjacent rollers 5 because of the slight curvature. of the axis 40 of the shaft 1, as can be seen in FIG. 1.
  • These means are produced by axial interlocking of the ends of the rollers 5 on the intermediate elements 6 which support them and each of which is mounted on the shaft at by means of a bearing 41.
  • Each intermediate element 6 has a cylindrical outer surface 42 of the same diameter as the rollers 5, to support with them the flexible envelope 8.
  • An orifice 43 may be formed in the surface 42 to give access to a bearing fixing screw 41.
  • each roller 5 consisting simply of a metallic tubular element, is cut at each end to form two rectangular teeth 45 engaging in the corresponding recesses 44 of the intermediate element 6, where they are supported in the radial and circumferential direction, but benefit from the desired axial play.
  • the present invention is not limited to the embodiment described above, but extends to any modification or variant obvious to a person skilled in the art.
  • the method of fixing the flexible envelope 8 to the end piece 7 could be different and the sealing surface 19 between these two elements could have another configuration, for example with annular beads which "bite" in the envelope rubber.
  • the invention also makes it possible to use a known method of fixing the flexible casing 8 where each end of the latter almost entirely surrounds the body of the endpiece and is folded inwards by a clamping ring, instead of being flared as described here.

Abstract

The present invention relates to a fabric spreader for finishing and treatment machines, which is provided with connectors having improved sealing and ensuring a long service life. The spreader comprises a curved stationary shaft (1) carrying a row of rotary rollers (5) surrounded by a tubular rubber casing (8), each end (18) of which is fastened to a conical surface (19) of a rotary connector (7). The body (11) of the connector is mounted on a ball bearing (12) and comprises a stuffing box (25) ensuring its sealing on the shaft (1). During rotation, this sealing is improved considerably by a ring of fins (31) generating a centrifugal fluid flow in front of the entrance of the surface of the seal between the connector and the shaft. This allows the spreader to function for a long time in aggressive liquids. <IMAGE>

Description

La présente invention concerne un élargisseur de tissu pour machine d'ennoblissement et de traitement, notamment pour teinture par immersion dans un bain de liquide tinctorial, comportant un arbre fixe à profil longitudinal courbe ou polygonal, une rangée de rouleaux rotatifs sensiblement coaxiaux audit arbre et montés au moyen de paliers pour former un support tubulaire rotatif, une enveloppe tubulaire souple et étanche entourant le support tubulaire, et deux embouts rotatifs étanches fixés aux deux extrémités de l'enveloppe tubulaire et supportés par l'arbre, chaque embout rotatif étant pourvu d'au moins un roulement et de moyens d'étanchéité.The present invention relates to a fabric expander for a finishing and processing machine, in particular for dyeing by immersion in a bath of dye liquid, comprising a fixed shaft with a curved or polygonal longitudinal profile, a row of rotary rollers substantially coaxial with said shaft and mounted by means of bearings to form a rotary tubular support, a flexible and watertight tubular casing surrounding the tubular support, and two watertight rotary end caps fixed at the two ends of the tubular casing and supported by the shaft, each rotary end cap being provided with 'at least one bearing and sealing means.

Dans les élargisseurs de tissu de ce genre, qui peuvent être immergés ou non dans les liquides employés dans les machines d'ennoblissement et de traitement, une fonction importante des deux embouts rotatifs consiste à assurer l'étanchéité aux deux extrémités de l'enveloppe tubulaire souple, qui est généralement en caoutchouc. Il s'agit d'éviter que les liquides de traitement puissent pénétrer à l'intérieur de l'enveloppe et atteindre les éléments en acier qu'elle contient, notamment l'arbre, les rouleaux et surtout les roulements à billes, car les liquides en question sont généralement chauds et agressifs. Il s'agit notamment de liquides tinctoriaux acides, de solvants, de solutions de soude, etc.In such fabric expanders, which may or may not be immersed in the liquids used in the finishing and processing machines, an important function of the two rotary nozzles is to seal at both ends of the tubular casing flexible, which is usually rubber. This is to avoid that the treatment liquids can penetrate inside the envelope and reach the steel elements which it contains, in particular the shaft, the rollers and especially the ball bearings, because the liquids in question are generally hot and aggressive. These include acid dye liquids, solvents, soda solutions, etc.

Selon la construction habituellement connue, les embouts d'un élargisseur de tissu ont un corps rotatif en métal ou en matière synthétique, emboîté dans l'enveloppe tubulaire en caoutchouc dont l'extrémité est fixée autour du corps de l'embout par serrage au moyen d'un collier. Ce mode de fixation tend à créer des plis dans l'enveloppe et en outre le caoutchouc a tendance à glisser peu à peu dans le collier, à cause de la traction alternée due à la courbure longitudinale de l'élargisseur. L'étanchéité le long de l'arbre fixe est assurée, à l'intérieur de l'embout, par un joint torique qui tourne en glissant sur l'arbre. Ce dispositif d'étanchéité se dégrade assez vite dans les conditions sévères dans lesquelles travaillent les élargisseurs et finit par laisser suinter du liquide à l'intérieur, même lorsque l'élargisseur ne travaille pas en immersion. Il en résulte non seulement de la corrosion, mais aussi des problèmes de teinte, par mélange des résidus de l'ancienne teinture avec la nouvelle lors des changements de couleur. On doit alors démonter et rincer l'élargisseur à chaque changement du bain de teinture. D'une manière générale, dans l'état de la technique, la durée de service d'un tel embout ne dépasse pas environ 1000 heures de fonctionnement, après quoi les embouts doivent être changés intégralement, ce qui est coûteux en matériel, en main-d'oeuvre et en temps d'immobilisation.According to the usually known construction, the ends of a fabric expander have a rotary body of metal or synthetic material, fitted into the tubular rubber casing, the end of which is fixed around the body of the end piece by tightening by means of a necklace. This method of attachment tends to create folds in the envelope and in addition the rubber tends to slide little by little in the collar, because of the alternating traction due to the longitudinal curvature of the expander. The seal along the fixed shaft is ensured, inside the nozzle, by an O-ring which turns while sliding on the shaft. This sealing device degrades fairly quickly under the harsh conditions in which the expander works and ends up allowing liquid to ooze inside, even when the expander does not work in immersion. This results not only in corrosion, but also in color problems, by mixing residues from the old dye with the new one when the color changes. You must then disassemble and rinse the expander each time you change the dye bath. In general, in the state of the art, the service life of such a nozzle does not exceed approximately 1000 hours of operation, after which the nozzles must be changed entirely, which is costly in material, on hand. -work and downtime.

La présente invention a pour but de perfectionner un élargisseur de ce genre et de réaliser une économie sur les frais d' exploitation de la machine, en dotant l'élargisseur d'embouts d' extrémité qui assurent une meilleure étanchéité et ont une plus longue durée de service que les embouts traditionnels, avec des opérations de maintenance qui sont simples et peu coûteuses.The object of the present invention is to improve a widener of this kind and to save on the operating costs of the machine, by providing the widener with end caps which ensure better sealing and have a longer duration. than traditional tips, with maintenance operations that are simple and inexpensive.

Selon l'invention, ce but est rempli par un élargisseur du genre indiqué en préambule, caractérisé en ce que les moyens d'étanchéité de chaque embout rotatif comportent un presse-étoupe, situé entre le roulement et une extrémité extérieure de l'embout, et une couronne d'ailettes disposée sur ladite extrémité extérieure à proximité de l'arbre pour chasser radialement par effet centrifuge tout fluide en contact avec ladite extrémité extérieure.According to the invention, this object is fulfilled by a widener of the kind indicated in the preamble, characterized in that the sealing means of each rotary end piece comprise a cable gland, located between the bearing and an outer end of the end piece, and a crown of fins disposed on said outer end near the shaft for expelling radially by centrifugal effect any fluid in contact with said outer end.

Cette construction des embouts d' étanchéité est doublement avantageuse par rapport à l'art antérieur, d'une part du point de vue de l'efficacité de l'étanchéité le long de l'arbre et d'autre part du point de vue de la maintenance. Quand l'élargisseur est à l'arrêt, le presse-étoupe assure à lui seul une étanchéité tout à fait suffisante. Quand il tourne, spécialement en immersion dans un liquide de traitement, la couronne d'ailettes crée un courant centrifuge de liquide qui abaisse la pression à l'entrée du joint entre l'embout et l'arbre, donc aussi la pression s'exerçant au niveau du presse-étoupe. En outre, le presse-étoupe peut facilement être démonté et extrait axialement de l'embout pendant que celui-ci reste en place, c'est-à-dire que l'on n'a pas besoin de toucher à son roulement, ni à sa fixation étanche à l'enveloppe tubulaire souple pour les opérations d'entretien.This construction of the sealing ends is doubly advantageous compared to the prior art, on the one hand from the point of view of the effectiveness of the sealing along the shaft and on the other hand from the point of view of maintenance. When the expander is at a standstill, the stuffing box alone completely seals sufficient. When it turns, especially when immersed in a treatment liquid, the crown of fins creates a centrifugal current of liquid which lowers the pressure at the inlet of the seal between the nozzle and the shaft, therefore also the pressure exerted at the level of the cable gland. In addition, the cable gland can easily be removed and axially removed from the end piece while it remains in place, that is to say that there is no need to touch its bearing, nor its watertight attachment to the flexible tubular casing for maintenance operations.

Lesdites ailettes peuvent avoir avantageusement des génératrices rectilignes parallèles à l'arbre, de sorte qu'elles sont faciles à fabriquer. De préférence, chacune des ailettes a un profil radial incliné par rapport à une direction radiale de la couronne d'ailettes.Said fins may advantageously have rectilinear generators parallel to the shaft, so that they are easy to manufacture. Preferably, each of the fins has a radial profile inclined relative to a radial direction of the crown of fins.

De préférence, la couronne d'ailettes est disposée sur une face frontale extérieure d' un écrou du presse-étoupe. Cet écrou du presse-étoupe peut comporter, en regard de l'arbre, une surface cylindrique d'étanchéité, pourvue d'au moins une rainure annulaire contenant un joint torique appliqué sur l'arbre.Preferably, the crown of fins is arranged on an external front face of a gland nut. This gland nut may comprise, facing the shaft, a cylindrical sealing surface, provided with at least one annular groove containing an O-ring applied to the shaft.

Dans une forme de réalisation préférée de l'invention, chaque embout a un corps annulaire dans lequel sont montés son roulement et son presse-étoupe, ledit corps ayant une surface périphérique d'étanchéité sur laquelle l'extrémité correspondante de l'enveloppe tubulaire souple est pressée par des moyens de serrage.In a preferred embodiment of the invention, each end piece has an annular body in which are mounted its bearing and its cable gland, said body having a peripheral sealing surface on which the corresponding end of the flexible tubular casing is pressed by clamping means.

De préférence, ladite surface périphérique d' étanchéité est divergente en direction de l'extrémité extérieure de l'embout, de sorte que l'extrémité de l'enveloppe tubulaire souple est évasée par ladite surface. Les moyens de serrage peuvent comporter un manchon de serrage agencé pour être vissé axialement sur un filetage périphérique du corps et pourvu d'une surface intérieure d'appui ou d'une bague ayant une telle surface, en regard de ladite surface périphérique d'étanchéité du corps. De préférence, ladite surface périphérique d'étanchéité et ladite surface d'appui sont coniques et sensiblement parallèles l'une à l'autre.Preferably, said peripheral sealing surface is divergent towards the outer end of the end piece, so that the end of the flexible tubular casing is flared by said surface. The clamping means may comprise a clamping sleeve arranged to be screwed axially on a peripheral thread of the body and provided with an internal bearing surface or with a ring having such a surface, opposite said peripheral sealing surface. from the body. Preferably, said peripheral sealing surface and said bearing surface are conical and substantially parallel to each other.

Dans une forme de réalisation particulière, le corps de l'embout comporte deux éléments annulaires concentriques assemblés par vissage en direction axiale d'un élément sur l'autre, lesdits éléments comprenant un élément intérieur dans lequel sont montés le roulement et le presse-étoupe, et un élément extérieur ayant ladite surface périphérique d'étanchéité et supportant le manchon de serrage.In a particular embodiment, the body of the end piece comprises two concentric annular elements assembled by screwing in an axial direction from one element to the other, said elements comprising an internal element in which the bearing and the gland are mounted. , and an external element having said peripheral sealing surface and supporting the clamping sleeve.

Un conduit de graissage peut s'étendre à travers le corps de l'embout, entre une surface frontale extérieure de l'embout et le roulement.A lubrication duct may extend through the body of the end piece, between an external front surface of the end piece and the bearing.

Afin de prévenir une détérioration de l'enveloppe tubulaire souple par des efforts de cisaillement longitudinal, il est avantageux que les rouleaux rotatifs soient solidaires en rotation les uns des autres. A cet effet, le support tubulaire rotatif peut comporter des éléments intermédiaires de jonction dont chacun est monté sur l'arbre par un palier et supporte une extrémité respective de deux rouleaux adjacents, et chacun desdits éléments intermédiaires et lesdites extrémités des rouleaux qu'il supporte comportent des formes complémentaires à emboîtement qui les rendent solidaires en rotation et permettent un jeu axial. De préférence, chaque rouleau est un élément tubulaire cylindrique dont chaque extrémité est emboîtée avec un jeu axial sur l'un des éléments intermédiaires ou sur l'un des embouts, chaque élément intermédiaire présente une surface extérieure cylindrique sensiblement de même diamètre extérieur que les rouleaux et lesdites formes complémentaires à emboîtement comprennent des évidements sensiblement rectangulaires, ménagés dans ladite surface extérieure de chaque élément intermédiaire, et des dents correspondantes ménagées par découpage de ladite extrémité des rouleaux et emboîtées respectivement dans lesdits évidements.In order to prevent deterioration of the flexible tubular casing by longitudinal shearing forces, it is advantageous for the rotary rollers to be rotationally secured to each other. To this end, the rotary tubular support may include intermediate junction elements, each of which is mounted on the shaft by a bearing and supports a respective end of two adjacent rollers, and each of said intermediate elements and said ends of the rollers which it supports have complementary interlocking shapes which make them integral in rotation and allow axial play. Preferably, each roller is a cylindrical tubular element, each end of which is fitted with an axial clearance on one of the intermediate elements or on one of the end pieces, each intermediate element has a cylindrical external surface substantially of the same external diameter as the rollers. and said complementary interlocking shapes comprise substantially rectangular recesses, formed in said outer surface of each intermediate element, and corresponding teeth formed by cutting out said end of the rollers and fitted respectively in said recesses.

D'autres caractéristiques et avantages de la présente invention apparaîtront dans la description suivante d'un exemple de réalisation, en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une vue schématique en élévation partiellement coupée d'un élargisseur de tissu selon l'invention,
  • la figure 2 est une vue détaillée et agrandie de la zone indiquée par la flèche II de la figure 1,
  • la figure 3 est une vue frontale de l'embout suivant la flèche III de la figure 2,
  • la figure 4 est une vue analogue à la figure 2 et représente une variante,
  • la figure 5 est une vue agrandie d'une forme de réalisation préférée du support tubulaire de l'élargisseur, et
  • la figure 6 est une vue en perspective d'un élément intermédiaire du support tubulaire de la figure 5.
Other characteristics and advantages of the present invention will appear in the following description of an exemplary embodiment, with reference to the appended drawings, in which:
  • FIG. 1 is a schematic elevational view partially cut away of a fabric expander according to the invention,
  • FIG. 2 is a detailed and enlarged view of the area indicated by the arrow II in FIG. 1,
  • FIG. 3 is a front view of the nozzle according to arrow III in FIG. 2,
  • FIG. 4 is a view similar to FIG. 2 and represents a variant,
  • FIG. 5 is an enlarged view of a preferred embodiment of the tubular support of the expander, and
  • FIG. 6 is a perspective view of an intermediate element of the tubular support of FIG. 5.

L'élargisseur de tissu représenté schématiquement dans la figure 1 comporte un arbre cylindrique fixe 1 incurvé longitudinalement et monté par des supports 2 sur un bâti 3 d'une enceinte 4 d'une machine de teinture. Des rouleaux 5 sont montés de manière rotative sur l'arbre 1, par l'entremise d'éléments intermédiaires à paliers 6 et de deux embouts rotatifs 7. Ces rouleaux forment un support tubulaire à profil longitudinal polygonal, qui est revêtu d'une enveloppe tubulaire souple 8 dont les extrémités sont fixées aux embouts 7 d'une manière étanche. Le tissu à traiter (non représenté) passe sur le côté convexe de l'élargisseur, qu'il entraîne en rotation par friction sur l'enveloppe 8. La construction d'ensemble et le fonctionnement d'un tel élargisseur sont bien connus et n'ont pas besoin d'être décrits plus en détail ici.The fabric expander shown schematically in Figure 1 comprises a fixed cylindrical shaft 1 curved longitudinally and mounted by supports 2 on a frame 3 of an enclosure 4 of a dyeing machine. Rollers 5 are rotatably mounted on the shaft 1, by means of intermediate bearing elements 6 and two rotary end pieces 7. These rollers form a tubular support with a polygonal longitudinal profile, which is coated with an envelope flexible tubular 8 whose ends are fixed to the end pieces 7 in a sealed manner. The fabric to be treated (not shown) passes over the convex side of the expander, which it drives in rotation by friction on the envelope 8. The overall construction and operation of such an expander are well known and need not be described in more detail here.

La figure 2 représente un des embouts 7 de l'élargisseur de tissu selon l'invention. Cet embout comporte un corps annulaire métallique 11 traversé par une extrémité rectiligne de l'arbre fixe 1 et supporté par celui-ci par un roulement à billes 12. Pour être bloqué axialement, le roulement 12 est monté sur une douille 13 et calé entre un épaulement 14 de cette douille et une bague de retenue 15, la douille et la bague étant bloquées au moyen d'une ou plusieurs vis 16 engagées dans l'arbre 1. Dans cette zone, le corps 11 présente une extrémité biseautée 17 sur laquelle est emboîtée l'extrémité correspondante du premier rouleau 5 entouré de l'enveloppe tubulaire en caoutchouc 8. L' extrémité 18 de cette enveloppe est évasée par application sur une surface conique d'étanchéité 19 du corps 11, où elle est pressée au moyen d'un manchon extérieur fileté 20 pourvu d'une bague intérieure 21 ayant une surface conique 22 parallèle à la surface 19. Le serrage s'effectue par déplacement axial du manchon 20 sur un filetage périphérique 23 du corps 11.FIG. 2 represents one of the end pieces 7 of the fabric expander according to the invention. This end piece comprises a metallic annular body 11 crossed by a straight end of the fixed shaft 1 and supported by the latter by a ball bearing 12. To be axially blocked, the bearing 12 is mounted on a bush 13 and wedged between a shoulder 14 of this sleeve and a retaining ring 15, the sleeve and the ring being locked by means of one or more screws 16 engaged in the shaft 1. In this zone, the body 11 has a beveled end 17 on which is fitted the corresponding end of the first roller 5 surrounded by the tubular rubber casing 8. The end 18 of this casing is flared by application to a conical sealing surface 19 of the body 11, where it is pressed by means of an outer threaded sleeve 20 provided with an inner ring 21 having a conical surface 22 parallel to the surface 19. The tightening is effected by axial displacement of the sleeve 20 on a peripheral thread 23 of the body 11.

L'étanchéité entre le corps 11 et l'arbre 1 est assurée essentiellement du côté extérieur du corps, c'est-à-dire du côté de l'extrémité de l'arbre 1, au moyen d'un dispositif démontable à presse-étoupe 25. Ce presse-étoupe comporte par exemple deux garnitures 26 en forme de disque, logées dans un alésage cylindrique du corps 11, et un écrou de serrage 27 engagé dans un filetage 28 dudit alésage. Des trous borgnes 29 (figure 3) sont ménagés sur la face frontale extérieure 30 du l'écrou 27 pour pouvoir le faire tourner au moyen d'une clé appropriée.The seal between the body 11 and the shaft 1 is ensured essentially on the outside of the body, that is to say on the side of the end of the shaft 1, by means of a removable press device. stuffing box 25. This stuffing box comprises for example two disc-shaped packings 26, housed in a cylindrical bore of the body 11, and a tightening nut 27 engaged in a thread 28 of said bore. Blind holes 29 (Figure 3) are provided on the outer front face 30 of the nut 27 to be able to rotate it by means of an appropriate key.

Par ailleurs, cette face 30 de l'écrou 27 porte une couronne d'ailettes axiales 31 qui sont disposées en biais par rapport aux plans radiaux de l'écrou, de préférence sous un angle d'environ 35°, pour avoir un effet de turbine centrifuge quand l'embout 7 tourne autour de l'arbre 1 dans le sens de la flèche A de la figure 3. Chaque ailette 31 possède un bord avant biseauté 32 à proximité de l'arbre 1. Ainsi, lorsque l'élargisseur tourne selon la flèche A, la couronne d'ailettes 31 crée un rapide écoulement centrifuge de tout fluide (gazeux ou liquide) susceptible de se trouver le long de cet arbre. En particulier lorsque cette partie de l'élargisseur est immergée, la vitesse de l'écoulement ainsi créé conduit à une très faible pression dynamique à l'entrée de la surface de joint entre l'écrou rotatif 27 et l'arbre fixe 1, empêchant ainsi le liquide de pénétrer dans le joint. Accessoirement, le même phénomène a l'avantage de brasser le liquide et de prévenir d'éventuels dépôts sur l'arbre ou sur l'embout.Furthermore, this face 30 of the nut 27 carries a ring of axial fins 31 which are arranged at an angle with respect to the radial planes of the nut, preferably at an angle of approximately 35 °, to have an effect of centrifugal impeller when the nozzle 7 rotates around the shaft 1 in the direction of arrow A in the figure 3. Each fin 31 has a beveled front edge 32 near the shaft 1. Thus, when the enlarger rotates according to arrow A, the crown of fins 31 creates a rapid centrifugal flow of any fluid (gaseous or liquid) likely to be along this tree. In particular when this part of the expander is submerged, the speed of the flow thus created leads to a very low dynamic pressure at the inlet of the joint surface between the rotary nut 27 and the fixed shaft 1, preventing thus the liquid from entering the joint. Incidentally, the same phenomenon has the advantage of stirring the liquid and preventing possible deposits on the shaft or on the nozzle.

Quand l'élargisseur ne tourne pas, le presse-étoupe 25 assure une étanchéité suffisante. On peut néanmoins prévoir un ou plusieurs joints toriques 33 sur la surface intérieure cylindrique de l'écrou 27. La présence de ces joints, ainsi que celle des ailettes 31, permet de réduire la force de serrage des garnitures 26 du presse-étoupe et donc de prolonger leur durée de vie, sans perte d'étanchéité. Un joint torique 11' est également prévu à l'entrée du filetage 23 pour assurer l'étanchéité entre le manchon 20 et le corps 11.When the expander does not rotate, the cable gland 25 provides sufficient sealing. However, one or more O-rings 33 can be provided on the inner cylindrical surface of the nut 27. The presence of these seals, as well as that of the fins 31, makes it possible to reduce the tightening force of the packings 26 of the cable gland and therefore extend their service life, without loss of tightness. An O-ring 11 ′ is also provided at the entry of the thread 23 to seal between the sleeve 20 and the body 11.

Dans la figure 2, on voit qu'il est possible de changer facilement les garnitures 26 du presse-étoupe 25 si elles sont usées, en dévissant simplement l'écrou 27, sans qu'il soit nécessaire de démonter aucun autre élément de l'embout 7. On réalise ainsi non seulement une économie sur le coût des pièces à changer, mais également sur la main-d'oeuvre pour les travaux d'entretien et sur les durées d'immobilisation de l'élargisseur. Des essais ont montré que la durée de service d'un tel embout est largement supérieure à celle d'un embout à joints toriques selon l'art antérieur. En particulier, le roulement 12 est beaucoup mieux protégé contre la corrosion, grâce à une étanchéité plus efficace.In FIG. 2, it can be seen that it is possible to easily change the linings 26 of the cable gland 25 if they are worn, by simply unscrewing the nut 27, without it being necessary to dismantle any other element of the tip 7. This saves not only the cost of the parts to be changed, but also the labor for maintenance work and the downtime of the expander. Tests have shown that the service life of such a tip is much greater than that of an O-ring tip according to the prior art. In particular, the bearing 12 is much better protected against corrosion, thanks to a more effective seal.

La figure 4 illustre une variante dans laquelle le corps annulaire 11 de l'embout 7 représenté à la figure 2 est réalisé en deux pièces concentriques, à savoir un élément annulaire intérieur 11a et un élément annulaire extérieur 11b qui est vissé axialement sur un filetage extérieur 35 de l'élément 11a. L'élément intérieur 11a assure le montage de l'embout 7 sur l'arbre 1, grâce au roulement 12 et aux moyens d'étanchéité, et il supporte le premier rouleau 5, comme dans le cas de la figure 2. L'élément extérieur 11b assure, en coopération avec le manchon fileté 20, la fixation de l'extrémité 18 de l'enveloppe tubulaire en caoutchouc 8, pressée entre les surfaces coniques 19 du corps et 22 du manchon. Cette réalisation du corps en deux éléments a pour avantage de faciliter la mise en place du manchon 20 et le serrage de l'extrémité 18 de l'enveloppe tubulaire. Il est prévu en outre, à travers les éléments 11a et 11b, un conduit de graissage 36 entre l'extrémité extérieure du corps et le roulement 12, ce qui permet d'assurer un graissage du roulement sans démontage de l'embout. Par exemple, un graisseur classique (non représenté) peut être vissé dans le débouché extérieur 37 du conduit 36. Ce conduit de graissage pourrait également être prévu à travers le corps 11 de la figure 2. L'étanchéité au niveau des filetages 23 et 35 est assurée par des joints toriques 11a' et 11b'.FIG. 4 illustrates a variant in which the annular body 11 of the end piece 7 shown in FIG. 2 is made in two parts concentric, namely an inner annular element 11a and an outer annular element 11b which is screwed axially on an external thread 35 of the element 11a. The internal element 11a assures the fitting 7 on the shaft 1, by means of the bearing 12 and the sealing means, and it supports the first roller 5, as in the case of FIG. 2. The element exterior 11b ensures, in cooperation with the threaded sleeve 20, the fixing of the end 18 of the tubular rubber casing 8, pressed between the conical surfaces 19 of the body and 22 of the sleeve. This embodiment of the body in two elements has the advantage of facilitating the positioning of the sleeve 20 and the tightening of the end 18 of the tubular casing. It is further provided, through the elements 11a and 11b, a lubrication conduit 36 between the outer end of the body and the bearing 12, which makes it possible to lubricate the bearing without dismantling the end piece. For example, a conventional lubricator (not shown) can be screwed into the external outlet 37 of the conduit 36. This lubrication conduit could also be provided through the body 11 of FIG. 2. The seal at the threads 23 and 35 is ensured by O-rings 11a 'and 11b'.

Les figures 5 et 6 illustrent une forme de réalisation préférée des rouleaux 5 et des éléments intermédiaires 6 formant le support tubulaire rotatif qui supporte l'enveloppe tubulaire souple 8 de l'élargisseur de tissu. On rappellera que l'enveloppe et son support sont entraînés en rotation par la friction du tissu passant sous tension sur l'élargisseur. L'enveloppe souple 8, qui est libre entre ces deux extrémités maintenues dans les embouts 7, a alors tendance à glisser en direction circonférentielle sur les rouleaux 5, de sorte qu'elle est soumise à des efforts de torsion susceptibles de provoquer à la longue des fissures et des cassures du caoutchouc. Même quand ces cassures sont minimes, il en résulte un défaut d' étanchéité qui peut conduire à une détérioration rapide des organes métalliques de l'élargisseur. Cet inconvénient est évité avec la construction illustrée par les figures 5 et 6, qui rend les rouleaux 5 solidaires en rotation les uns des autres et réduit ainsi le glissement relatif de l'enveloppe 8 sur certains de ces rouleaux, notamment ceux qui sont éloignés des embouts d'extrémité 7 où l'enveloppe est fixée.Figures 5 and 6 illustrate a preferred embodiment of the rollers 5 and the intermediate elements 6 forming the rotary tubular support which supports the flexible tubular casing 8 of the fabric expander. It will be recalled that the envelope and its support are rotated by the friction of the fabric passing under tension on the expander. The flexible envelope 8, which is free between these two ends held in the end pieces 7, then tends to slide in the circumferential direction on the rollers 5, so that it is subjected to torsional forces which may cause in the long run rubber cracks and breaks. Even when these breaks are minimal, this results in a leak which can lead to rapid deterioration of the metallic members of the expander. This drawback is avoided with the construction illustrated in FIGS. 5 and 6, which makes the rollers 5 integral in rotation with one another and thus reduces the relative sliding of the casing 8 on some of these rollers, in particular those which are distant from the end caps 7 where the casing is fixed.

A cet effet, il est prévu des moyens d'accouplement entre les rouleaux 5, de manière à les rendre solidaires en rotation, tout en laissant un jeu axial suffisant pour la légère déviation angulaire existant entre deux rouleaux 5 adjacents à cause de la légère courbure de l'axe 40 de l'arbre 1, comme on le voit dans la figure 1. Ces moyens sont réalisés par emboîtement axial des extrémités des rouleaux 5 sur les éléments intermédiaires 6 qui les supportent et dont chacun est monté sur l'arbre au moyen d'un roulement 41. Chaque élément intermédiaire 6 présente une surface extérieure cylindrique 42 de même diamètre que les rouleaux 5, pour supporter avec eux l'enveloppe souple 8. Un orifice 43 peut être ménagé dans la surface 42 pour donner accès à une vis de fixation du roulement 41. A chaque extrémité de l'élément 6, deux évidements opposés 44 sont ménagés dans la surface 42 et s'étendent par exemple chacun sur un quart de la circonférence. Chaque rouleau 5, constitué simplement d'un élément tubulaire métallique, est découpé à chaque extrémité pour former deux dents rectangulaires 45 s' engageant dans les évidements correspondants 44 de l'élément intermédiaire 6, où elles sont supportées en direction radiale et circonférentielle, mais bénéficient du jeu axial voulu.To this end, coupling means are provided between the rollers 5, so as to make them integral in rotation, while leaving sufficient axial play for the slight angular deviation existing between two adjacent rollers 5 because of the slight curvature. of the axis 40 of the shaft 1, as can be seen in FIG. 1. These means are produced by axial interlocking of the ends of the rollers 5 on the intermediate elements 6 which support them and each of which is mounted on the shaft at by means of a bearing 41. Each intermediate element 6 has a cylindrical outer surface 42 of the same diameter as the rollers 5, to support with them the flexible envelope 8. An orifice 43 may be formed in the surface 42 to give access to a bearing fixing screw 41. At each end of the element 6, two opposite recesses 44 are formed in the surface 42 and extend, for example, each over a quarter of the circumference. Each roller 5, consisting simply of a metallic tubular element, is cut at each end to form two rectangular teeth 45 engaging in the corresponding recesses 44 of the intermediate element 6, where they are supported in the radial and circumferential direction, but benefit from the desired axial play.

La présente invention n'est pas limitée à l'exemple de réalisation décrit ci-dessus, mais s' étend à toute modification ou variante évidente pour un homme du métier. En particulier, le mode de fixation de l'enveloppe souple 8 sur l'embout 7 pourrait être différent et la surface d' étanchéité 19 entre ces deux éléments pourrait avoir une autre configuration, par exemple avec des bourrelets annulaires qui "mordent" dans le caoutchouc de l'enveloppe. L'invention permet aussi d'utiliser un mode de fixation connu de l'enveloppe souple 8 où chaque extrémité de celle-ci entoure presque entièrement le corps de l'embout et est rabattue vers l'intérieur par un anneau de serrage, au lieu d'être évasée comme on l'a décrit ici.The present invention is not limited to the embodiment described above, but extends to any modification or variant obvious to a person skilled in the art. In particular, the method of fixing the flexible envelope 8 to the end piece 7 could be different and the sealing surface 19 between these two elements could have another configuration, for example with annular beads which "bite" in the envelope rubber. The invention also makes it possible to use a known method of fixing the flexible casing 8 where each end of the latter almost entirely surrounds the body of the endpiece and is folded inwards by a clamping ring, instead of being flared as described here.

Claims (14)

Elargisseur pour machine d'ennoblissement et de traitement d'un produit en bande, notamment pour teinture d'une bande de tissu par immersion dans un bain de liquide tinctorial, comportant un arbre fixe (1) à profil longitudinal courbe ou polygonal, une rangée de rouleaux rotatifs (5) sensiblement coaxiaux audit arbre et montés au moyen de paliers pour former un support tubulaire rotatif autour de l'arbre, une enveloppe tubulaire (8) souple et étanche, entourant le support tubulaire, et deux embouts rotatifs étanches (7) fixés aux deux extrémités de l'enveloppe tubulaire souple et supportés par l'arbre, chaque embout rotatif étant pourvu d'au moins un roulement et de moyens d' étanchéité, caractérisé en ce que les moyens d'étanchéité de chaque embout rotatif (7) comportent un presse-étoupe (25), situé entre le roulement (12) et une extrémité extérieure de l'embout, et une couronne d'ailettes (31) disposée sur ladite extrémité extérieure à proximité de l'arbre (1) pour chasser radialement par effet centrifuge tout fluide en contact avec ladite extrémité extérieure.Widener for a machine for finishing and processing a strip product, in particular for dyeing a strip of fabric by immersion in a bath of dye liquid, comprising a fixed shaft (1) with a curved or polygonal longitudinal profile, one row rotary rollers (5) substantially coaxial with said shaft and mounted by means of bearings to form a rotary tubular support around the shaft, a flexible and watertight tubular casing (8) surrounding the tubular support, and two sealed rotary ends (7 ) fixed to the two ends of the flexible tubular casing and supported by the shaft, each rotary end piece being provided with at least one bearing and sealing means, characterized in that the sealing means of each rotary end piece ( 7) comprise a cable gland (25), located between the bearing (12) and an outer end of the end piece, and a ring of fins (31) disposed on said outer end near the shaft e (1) for expelling radially by centrifugal effect any fluid in contact with said outer end. Elargisseur de tissu selon la revendication 1, caractérisé en ce que lesdites ailettes (31) ont des génératrices rectilignes parallèles à l'arbre.Fabric expander according to claim 1, characterized in that said fins (31) have rectilinear generatrix parallel to the shaft. Elargisseur de tissu selon la revendication 2, caractérisé en ce que chacune des ailettes (31) a un profil radial incliné par rapport à une direction radiale de la couronne d'ailettes.Fabric expander according to claim 2, characterized in that each of the fins (31) has a radial profile inclined relative to a radial direction of the crown of fins. Elargisseur de tissu selon la revendication 1, caractérisé en ce que la couronne d'ailettes (31) est disposée sur une face frontale extérieure d'un écrou (27) du presse-étoupe (25).Fabric expander according to claim 1, characterized in that the fin ring (31) is arranged on an external front face of a nut (27) of the cable gland (25). Elargisseur de tissu selon la revendication 4, caractérisé en ce que l'écrou (27) du presse-étoupe comporte, en regard de l'arbre (1), une surface cylindrique d'étanchéité, pourvue d'au moins une rainure annulaire contenant un joint torique (33) appliqué sur l'arbre.Fabric expander according to claim 4, characterized in that the nut (27) of the cable gland has, opposite the shaft (1), a cylindrical sealing surface, provided with at least one annular groove containing an O-ring (33) applied to the shaft. Elargisseur de tissu selon l'une des revendications précédentes, caractérisé en ce que chaque embout (7) a un corps annulaire (11) dans lequel sont montés son roulement (12) et son presse-étoupe (25), ledit corps ayant une surface périphérique d'étanchéité (19) sur laquelle l'extrémité correspondante (18) de l'enveloppe tubulaire souple (8) est pressée par des moyens de serrage (20 - 23).Fabric expander according to one of the preceding claims, characterized in that each end piece (7) has an annular body (11) in which are mounted its bearing (12) and its cable gland (25), said body having a surface sealing device (19) on which the corresponding end (18) of the flexible tubular casing (8) is pressed by clamping means (20 - 23). Elargisseur de tissu selon la revendication 6, caractérisé en ce que ladite surface périphérique d'étanchéité (19) est divergente en direction de l'extrémité extérieure de l'embout, de sorte que l'extrémité (18) de l'enveloppe tubulaire souple est évasée par ladite surface.Fabric expander according to claim 6, characterized in that said peripheral sealing surface (19) is divergent towards the outer end of the end piece, so that the end (18) of the flexible tubular casing is flared by said surface. Elargisseur de tissu selon la revendication 6, caractérisé en ce que les moyens de serrage comportent un manchon de serrage (20) agencé pour être vissé axialement sur un filetage périphérique (23) du corps (11) et pourvu d'une surface intérieure d'appui (22), ou d'une bague (21) ayant une telle surface, en regard de ladite surface périphérique d'étanchéité (19) du corps.Fabric expander according to claim 6, characterized in that the clamping means comprise a clamping sleeve (20) arranged to be screwed axially on a peripheral thread (23) of the body (11) and provided with an inner surface of support (22), or a ring (21) having such a surface, facing said peripheral sealing surface (19) of the body. Elargisseur de tissu selon la revendication 8, caractérisé en ce que ladite surface périphérique d'étanchéité (19) et ladite surface d'appui (22) sont coniques et sensiblement parallèles l'une à l'autre.Fabric expander according to claim 8, characterized in that said peripheral sealing surface (19) and said bearing surface (22) are conical and substantially parallel to one another. Elargisseur de tissu selon la revendication 8 ou 9, caractérisé en ce que ledit corps (11) de l'embout (7) comporte deux éléments annulaires concentriques (11a, 11b) assemblés par vissage en direction axiale d'un élément sur l'autre, lesdits éléments comprenant un élément intérieur (11a) dans lequel sont montés le roulement (12) et le presse-étoupe (25), et un élément extérieur (11b) ayant ladite surface périphérique d'étanchéité (19) et supportant le manchon de serrage (20).Fabric expander according to claim 8 or 9, characterized in that said body (11) of the end piece (7) comprises two concentric annular elements (11a, 11b) assembled by screwing in an axial direction from one element to the other , said elements comprising an inner element (11a) in which the bearing (12) and the stuffing box (25) are mounted, and an outer element (11b) having said peripheral sealing surface (19) and supporting the sleeve tightening (20). Elargisseur de tissu selon l'une des revendications 6 à 10, caractérisé en ce qu'au moins un conduit de graissage s'étend à travers le corps (11) de l'embout (7), entre une surface frontale extérieure de l'embout et le roulement (12).Fabric expander according to one of Claims 6 to 10, characterized in that at least one lubrication duct extends through the body (11) of the end piece (7), between an external front surface of the end cap and bearing (12). Elargisseur de tissu selon l'une des revendications précédentes, caractérisé en ce que lesdits rouleaux (5) sont solidaires en rotation les uns des autres.Fabric expander according to one of the preceding claims, characterized in that said rollers (5) are rotatably connected to one another. Elargisseur de tissu selon la revendication 12, caractérisé en ce que le support tubulaire rotatif comporte des éléments intermédiaires de jonction (6) dont chacun est monté sur l'arbre (1) par un palier et supporte une extrémité respective de deux rouleaux adjacents (5), et en ce que chacun desdits éléments intermédiaires (6) et lesdites extrémités des rouleaux qu'il supporte comportent des formes complémentaires à emboîtement (44, 45) qui les rendent solidaires en rotation et permettent un jeu axial.Fabric expander according to claim 12, characterized in that the rotary tubular support comprises intermediate junction elements (6) each of which is mounted on the shaft (1) by a bearing and supports a respective end of two adjacent rollers (5 ), and in that each of said intermediate elements (6) and said ends of the rollers which it supports comprise complementary interlocking shapes (44, 45) which make them integral in rotation and allow axial play. Elargisseur de tissu selon la revendication 13, caractérisé en ce que chaque rouleau (5) est un élément tubulaire cylindrique dont chaque extrémité est emboîtée avec un jeu axial sur l'un des éléments intermédiaires (6) ou sur l'un des embouts (7), en ce que chaque élément intermédiaire (6) présente une surface extérieure cylindrique (42) sensiblement de même diamètre extérieur que les rouleaux (5) et en ce que lesdites formes complémentaires à emboîtement comprennent des évidements sensiblement rectangulaires (44), ménagés dans ladite surface extérieure de chaque élément intermédiaire (6), et des dents correspondantes (45) ménagées par découpage de ladite extrémité des rouleaux et emboîtées respectivement dans lesdits évidements.Fabric expander according to claim 13, characterized in that each roller (5) is a cylindrical tubular element, each end of which is fitted with an axial clearance on one of the intermediate elements (6) or on one of the end pieces (7 ), in that each intermediate element (6) has a cylindrical outer surface (42) of substantially the same outside diameter as the rollers (5) and in that said complementary interlocking shapes comprise substantially rectangular recesses (44), arranged in said outer surface of each intermediate element (6), and corresponding teeth (45) formed by cutting out said end of the rollers and fitted respectively into said recesses.
EP94440044A 1993-07-06 1994-07-04 Fabric spreader for finishing machines. Withdrawn EP0638683A3 (en)

Applications Claiming Priority (2)

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FR9308447A FR2707306B1 (en) 1993-07-06 1993-07-06 Fabric expander for finishing and processing machine.
FR9308447 1993-07-06

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EP0638683A2 true EP0638683A2 (en) 1995-02-15
EP0638683A3 EP0638683A3 (en) 1996-06-19

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WO2001049916A1 (en) * 1999-12-29 2001-07-12 Owens Corning Applicator roll
CN106811887A (en) * 2017-04-05 2017-06-09 刘运华 A kind of garment production non-woven fabric dyeing device

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US3357073A (en) * 1965-05-10 1967-12-12 American Cloth Strait Company Curved roll
US3676908A (en) * 1969-11-12 1972-07-18 Wittler & Co Kg H Broadening and stretching roller for flexible webs
US3666049A (en) * 1970-10-12 1972-05-30 Kern Roll And Rubber Co Expander roll assembly with oil-mist lubrication

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001049916A1 (en) * 1999-12-29 2001-07-12 Owens Corning Applicator roll
US6358317B1 (en) 1999-12-29 2002-03-19 Owens Corning Fiberglas Technology, Inc. Radial contact applicator roll
CN106811887A (en) * 2017-04-05 2017-06-09 刘运华 A kind of garment production non-woven fabric dyeing device

Also Published As

Publication number Publication date
EP0638683A3 (en) 1996-06-19
FR2707306A1 (en) 1995-01-13
FR2707306B1 (en) 1995-11-10

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