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EP0370882A1 - Exchangeable napping element for a roller raising machine - Google Patents

Exchangeable napping element for a roller raising machine Download PDF

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Publication number
EP0370882A1
EP0370882A1 EP89403185A EP89403185A EP0370882A1 EP 0370882 A1 EP0370882 A1 EP 0370882A1 EP 89403185 A EP89403185 A EP 89403185A EP 89403185 A EP89403185 A EP 89403185A EP 0370882 A1 EP0370882 A1 EP 0370882A1
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EP
European Patent Office
Prior art keywords
scraper cylinder
lining
card lining
card
cylinder according
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.)
Ceased
Application number
EP89403185A
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German (de)
French (fr)
Inventor
Michel Scholaert
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0370882A1 publication Critical patent/EP0370882A1/en
Ceased legal-status Critical Current

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Classifications

    • 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
    • D06C11/00—Teasing, napping or otherwise roughening or raising pile of textile fabrics

Definitions

  • the present invention relates to a scraper cylinder intended to equip scraping machines, of the woolly, felting, chardonneuse type.
  • the scraping cylinders are coated with card lining, and have an action on the fibrous surface of the fabrics, knits, nonwovens or other articles of the textile type which are treated in such machines.
  • card lining is also taken in a general sense, it is a lining, intended to be mounted on a scraping cylinder, and on which are implanted teeth whose shape and dimensions depend on the desired effect and will therefore vary from one machine to another.
  • the teeth of workers called bristles are inclined in the direction of the direction of advancement of the fabric
  • the teeth of workers called counterweight are inclined in the direction opposite to the direction of advancement of the fabric.
  • the teeth of the cylinders, called thistles are inclined in the direction of their axis of rotation.
  • the scraper cylinder for a chardonneuse known for example from French patent NO 1,388,703, comprises a body of revolution, which can be a wooden bobbin, the lateral surface of which is covered with a card lining.
  • a body of revolution which can be a wooden bobbin, the lateral surface of which is covered with a card lining.
  • the scraping cylinders for woolen or felting machines have the same structure but they are positively driven in rotation.
  • the card lining is mounted on a second sheath-shaped element, sliding on the rotating part of the cylinder.
  • a replacement only requires, for example, the disassembly of small cylinders of the Mini-T type according to French patent No. 2,578,861 and not that of the large working cylinders of a conventional woolen machine.
  • the downtime is therefore significantly reduced.
  • the second tubular element being made of a flexible material, it comprises at each end at least one slot made according to a generator, and the locking means consist of two clamping rings each placed at one of the ends and enclosing the second element in an area thereof uncoated with card lining against the first element.
  • This second flexible element can be produced in the form of cardboard or plastic tubes, in particular.
  • the scraper cylinder is equipped with two protective cups, each one being mounted at one end of the latter, said cups having an annular part flush with the card lining and covering the clamping ring.
  • the scraper cylinder has two spacer rings, placed between the first and the second elements at each of its ends. This ring compensates for any difference in diameter.
  • the latter comprises two reinforcement eyelets, an eyelet at each end in an area devoid of card lining, and the locking means consist of a screw whose the threaded rod enters the eyelet and the head of which applies the second element against the first.
  • the scraping cylinders 1 and 2 shown in FIGS. 1 and 2 are cylinders of the pile or counterweight type, the teeth 3 of the card lining being inclined in the direction of the advancement direction of the article (bristles) or in the opposite direction (counterweight). This inclination is not visible in the figures. More precisely, it is a Mini-T type cylinder, as described in French patent N ° 85.03.741, provided with an elastic coupling with rapid disassembly.
  • the body 4 of the cylinder 1 has a cylindrical outer shape and rotates around its axis 5, using known means not shown.
  • the sleeve 6 is, in the version shown in FIG. 1, a cardboard tube, on which is helically wound and glued by adhesive the fabric 7 supporting the teeth 3 of the lining.
  • FIG. 1 shows the cylinder 1 after the sheath 6 coated with its lining 3.7 has been fitted onto the body 4 of the cylinder 1.
  • the sheath 6 is blocked on the body 4 by insertion of a screw into the eyelet 8 and screwing it into the threaded opening facing it in the body 4.
  • the sleeve 6 is made of light metal with a thickness thinner than that of the cardboard tube of Figure 1.
  • a spacer ring 9 is placed at each end of the cylinder 1 between the body 4 and the sheath 6. The function of this ring 9 is to compensate for any deviations with a view to obtaining a cylinder of which the scraping diameter is acceptable, and this regardless of the diameter of the existing body 4.
  • the scraping cylinder 10 of FIG. 3 is a thistle type cylinder, the teeth 3 of the card lining being inclined in the direction of the axis of rotation 5 of the cylinder.
  • It comprises a central tube 11 rotatably mounted on sealed ball bearings 12 with respect to an axis 13 passing right through it.
  • the sleeve 6 On the central tube 11 is fitted the sleeve 6 on which is wound and glued with an adhesive the fabric 7 supporting the teeth 3 of the card lining.
  • the sheath 6 is a cardboard tube, the two ends of which are split over a length of 20 mm, each by two slots made according to diametrically opposite generatrices in the areas without lining.
  • the locking of the sleeve 6 on the central tube 11 is obtained by the two clamping rings 14, 15.
  • the presence of the slots made in the sleeve 6 makes it possible to compensate for any deformations of the sleeve 6 during tightening against the central tube 11, deformations due to the difference existing between the outside diameter of the central tube 11 and the inside diameter of the sleeve.
  • the difference in diameter is of the order of 0.1 to 0.2 mm.
  • the ends of the sheath 6 are protected by the protective cup 16, the annular part 17 of which extends above the unadorned zone, including the clamping rings 14, 15 and is flush with the top of the teeth 3 of the gasket. card.
  • These cups 16 have the function of preventing the attack and the sudden exit of the teeth 3 on the article to be treated.
  • the cup 16 is held by crushing the O-ring 19 when it is pressed into the bore of the central tube 11.
  • this invention will be all the more advantageous as the wear of the lining will be rapid, therefore in the scraping machines in which the cylinders are driven positively, in particular the woolen machines. Indeed in the chardonnates, the thistle does not re-acute and its replacement occurs only after normal or accidental wear.
  • the user will be able to replace the used linings by simple exchange of a sheath, or even replace one lining with another better suited to certain scraping works.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

According to the invention, the nap roller is composed of a cylindrical central element (11) rotating about an axis (5) and of a tubular element (6), to the surface of which is fastened card clothing, for example a fabric (7) which supports metal teeth (3) and which is wound around the tubular element (6) and adhesively bonded to this. The tubular element (6) is slipped onto the central element (11) and locked on the latter by locking means, for example a locking ring (14, 15). <IMAGE>

Description

La présente invention concerne un cylindre gratteur destiné à équiper des machines de grattage, du type laineuse, feutreuse, chardonneuse. Dans ces machines, les cylindres gratteurs sont revêtus de garniture de carde, et ont une action sur la surface fibreuse des tissus, tricots, non-tissés ou autres articles du type textile qui sont traités dans de telles machines. Le terme garniture de carde est aussi pris dans un sens général, il s'agit de garniture, destinée à être montée sur un cylindre gratteur, et sur laquelle sont implantées des dents dont la forme et les dimensions sont fonction de l'effet recherché et vont donc varier d'une machine à l'autre. Par exemple , dans une laineuse, les dents des travailleurs dénommés poils sont inclinées dans le sens de la direction d'avancement du tissu, les dents des travailleurs dénommés contrepoils sont inclinées dans le sens opposé à la direction d'avancement du tissu. Par exemple, dans une chardonneuse, les dents des cylindres , dénommés chardons, sont inclinées dans la direction de leur axe de rotation.The present invention relates to a scraper cylinder intended to equip scraping machines, of the woolly, felting, chardonneuse type. In these machines, the scraping cylinders are coated with card lining, and have an action on the fibrous surface of the fabrics, knits, nonwovens or other articles of the textile type which are treated in such machines. The term card lining is also taken in a general sense, it is a lining, intended to be mounted on a scraping cylinder, and on which are implanted teeth whose shape and dimensions depend on the desired effect and will therefore vary from one machine to another. For example, in a woolen machine, the teeth of workers called bristles are inclined in the direction of the direction of advancement of the fabric, the teeth of workers called counterweight are inclined in the direction opposite to the direction of advancement of the fabric. For example, in a chardonneuse, the teeth of the cylinders, called thistles, are inclined in the direction of their axis of rotation.

Le cylindre gratteur pour chardonneuse, connu par exemple par le brevet français NO 1.388.703, comporte un corps de révolution, qui peut être un bobinot en bois, dont la surface latérale est recouverte d'une garniture de carde. Dans les deux faces extrêmes du bobinot sont enfoncés deux axes dont les têtes extérieures présentent des évidements engagés respectivement sur deux tourillons fixes, permettant ainsi la libre rotation du cylindre gratteur. Les cylindres gratteurs pour laineuse ou feutreuse ont la même structure mais ils sont entraînés positivement en rotation.The scraper cylinder for a chardonneuse, known for example from French patent NO 1,388,703, comprises a body of revolution, which can be a wooden bobbin, the lateral surface of which is covered with a card lining. In the two end faces of the bobbin are driven two axes whose outer heads have recesses engaged respectively on two fixed journals, thus allowing the free rotation of the scraper cylinder. The scraping cylinders for woolen or felting machines have the same structure but they are positively driven in rotation.

Dans le cas des cylindres gratteurs à entraînement positif en rotation, l'action de la garniture de carde sur la surface fibreuse provoque dans le temps une usure des pointes de garniture. On remédie à cette usure par un affûtage périodique, après un nombre d'heures de production qui peut aller de 800 à 1200 heures selon les articles traités. Pour réaliser cet affûtage, il faut démonter les cylindres gratteurs de la machine, procéder à l'aiguisage et remonter les cylindres. Cette opération est longue et entraîne une immobilisation importante de la machine. On peut diminuer le temps d'immobilisation en ayant un jeu de cylindres de rechange , mais cela nécessite un investissement non négligeable. De plus après trois ou quatre affûtages, il faut changer les garnitures de carde, ce qui nécessite le démontage des cylindres de la machine, l'extraction de la garniture usée, la mise en place autour du cylindre d'une nouvelle garniture et le remontage des cylindres.In the case of scrapers with positive rotation drive, the action of the card lining on the fibrous surface causes wear of the lining tips over time. This wear is remedied by periodic sharpening, after a number of hours of production which can range from 800 to 1,200 hours depending on the articles treated. To carry out this sharpening, it is necessary to dismantle the scraping cylinders of the machine, sharpen and reassemble the cylinders. This operation is long and results in significant immobilization of the machine. The downtime can be reduced by having a set of spare cylinders, but this requires a significant investment. In addition, after three or four sharpenings, the card linings must be changed, which requires the disassembly of the machine cylinders, the extraction of the worn lining, the fitting around the cylinder of a new lining and reassembly. cylinders.

Or on a trouvé et c 'est ce qui fait l 'objet de l'invention un cylindre gratteur qui pallie les inconvénients constatés en ce qu'il diminue sensiblement le temps d'arrêt des machines pour l'entretien de la garniture sans entraîner d'investissement important. Le cylindre gratteur comporte de manière connue un corps de révolution tournant autour d'un axe et dont la surface extérieure est revêtue d'une garniture de carde. Selon l'invention le corps de révolution est composé :

  • a. d'un premier élément central, de forme extérieure cylindrique, tournant autour d'un axe,
  • b. d'un second élément tubulaire , dont la surface extérieure est revêtue de la garniture de carde, et dont l'évidement intérieur a un diamètre légèrement supérieur au diamètre extérieur du premier élément, ledit second élément étant monté autour du premier élément par coulissement,
  • c. et des moyens de blocage du second élément sur le premier.
Now we have found and this is what is the subject of the invention a scraper cylinder which overcomes the drawbacks noted in that it significantly reduces the downtime of the machines for the maintenance of the lining without causing d important investment. The scraper cylinder comprises in known manner a body of revolution rotating about an axis and the outer surface of which is coated with a card lining. According to the invention, the body of revolution is composed:
  • at. a first central element, of cylindrical external shape, rotating around an axis,
  • b. a second tubular element, the outer surface of which is coated with the card lining, and the inner recess of which has a diameter slightly greater than the outer diameter of the first element, said second element being mounted around the first element by sliding,
  • vs. and means for blocking the second element on the first.

Selon l'invention la garniture de carde est montée sur un second élément en forme de fourreau, coulissant sur la partie tournante du cylindre. Ainsi pour procéder à l'affûtage ou au remplacement des garnitures , il suffit d'enlever le fourreau monté et d'emmancher sur la partie tournante un autre fourreau muni d'une garniture en bon état. Un tel remplacement ne nécessite par exemple que le démontage des petits cylindres du type Mini-T selon le brevet français N° 2.578.861 et non celui des grands cylindres travailleurs de laineuse classique. Le temps d'arrêt est donc nettement réduit. De plus le surcoût engendré par les fourreaux est faible, d'autant plus que le cylindre gratteur de l'invention peut équiper la plupart des machines de grattage existantes.According to the invention, the card lining is mounted on a second sheath-shaped element, sliding on the rotating part of the cylinder. Thus to proceed to the sharpening or replacement of the linings, it suffices to remove the mounted sleeve and to fit on the rotating part another sleeve provided with a lining in good condition. Such a replacement only requires, for example, the disassembly of small cylinders of the Mini-T type according to French patent No. 2,578,861 and not that of the large working cylinders of a conventional woolen machine. The downtime is therefore significantly reduced. Of the lower the additional cost generated by the sleeves, the more so as the scraper cylinder of the invention can be fitted to most of the existing scraping machines.

De préférence le second élément tubulaire étant réalisé dans un matériau flexible, il comporte à chaque extrémité au moins une fente pratiquée selon une génératrice , et les moyens de blocage consistent en deux anneaux de serrage placés chacun au niveau d'une des extrémités et enserrant le second élément dans une zone de celui-ci non revêtu de garniture de carde contre le premier élément.Preferably, the second tubular element being made of a flexible material, it comprises at each end at least one slot made according to a generator, and the locking means consist of two clamping rings each placed at one of the ends and enclosing the second element in an area thereof uncoated with card lining against the first element.

Ce second élément flexible peut être réalisé sous la forme de tubes en carton ou en matières plastiques , notamment.This second flexible element can be produced in the form of cardboard or plastic tubes, in particular.

Avantageusement dans la version précitée , le cylindre gratteur est équipé de deux coupelles de protection , chacune étant montée à une extrémité de celui-ci, lesdites coupelles ayant une partie annulaire affleurant la garniture de carde et recouvrant l'anneau de serrage.Advantageously in the aforementioned version, the scraper cylinder is equipped with two protective cups, each one being mounted at one end of the latter, said cups having an annular part flush with the card lining and covering the clamping ring.

Dans le cas où le second élément est réalisé dans un matériau rigide, par exemple un métal léger, et de faible épaisseur, le cylindre gratteur comporte deux bagues d'écartement, placées entre le premier et le second éléments à chacune de ses extrémités. Cette bague permet de compenser une éventuelle différence de diamètre.In the case where the second element is made of a rigid material, for example a light metal, and of small thickness, the scraper cylinder has two spacer rings, placed between the first and the second elements at each of its ends. This ring compensates for any difference in diameter.

De préférence et notamment lorsque la garniture de carde est enroulée en hélice autour du second élément , ce dernier comporte deux oeillets de renfort , un oeillet à chaque extrémité dans une zone dépourvue de garniture de carde , et les moyens de blocage consistent en une vis dont la tige filetée pénètre dans l'oeillet et dont la tête applique le second élément contre le premier.Preferably and in particular when the card lining is wound in a helix around the second element, the latter comprises two reinforcement eyelets, an eyelet at each end in an area devoid of card lining, and the locking means consist of a screw whose the threaded rod enters the eyelet and the head of which applies the second element against the first.

L'invention sera mieux comprise à la lecture de la description qui va maintenant être faite de deux exemples de réalisation du cylindre gratteur à fourreau garni interchangeable, illustrée par le dessin annexé dans lequel :

  • La figure 1 est une vue schématique en coupe d'un cylindre pour laineuse, équipé d'un fourreau du type poil ou contrepoil
  • La figure 2 est une vue schématique en coupe du cylindre de la figure 1 équipé d'un fourreau métallique de plus faible épaisseur
  • La figure 3 est une vue schématique en coupe d'un cylindre pour chardonneuse équipé d'un fourreau du type chardon.
The invention will be better understood on reading the description which will now be made of two embodiments of the scraper cylinder with interchangeable lined sheath, illustrated by the appended drawing in which:
  • Figure 1 is a schematic sectional view of a cylinder for woolly, fitted with a pile or counterweight type sheath
  • Figure 2 is a schematic sectional view of the cylinder of Figure 1 equipped with a thinner metal sheath
  • Figure 3 is a schematic sectional view of a cylinder for chardonneuse equipped with a thistle type sheath.

Les cylindres gratteurs 1 et 2 montrés sur les figures 1 et 2 sont des cylindres du type poil ou contrepoil, les dents 3 de la garniture de carde étant inclinées dans le sens de la direction d'avancement de l'article ( poils) ou dans le sens opposé (contrepoil). Cette inclinaison n'est pas visible sur les figures. Il s'agit plus précisément d'un cylindre du type Mini-T , tel que décrit dans le brevet français N° 85.03.741, muni d'un accouplement élastique à démontage rapide.The scraping cylinders 1 and 2 shown in FIGS. 1 and 2 are cylinders of the pile or counterweight type, the teeth 3 of the card lining being inclined in the direction of the advancement direction of the article (bristles) or in the opposite direction (counterweight). This inclination is not visible in the figures. More precisely, it is a Mini-T type cylinder, as described in French patent N ° 85.03.741, provided with an elastic coupling with rapid disassembly.

Le corps 4 du cylindre 1 a une forme extérieure cylindrique et tourne autour de son axe 5, grâce à des moyens connus non représentés.The body 4 of the cylinder 1 has a cylindrical outer shape and rotates around its axis 5, using known means not shown.

Le fourreau 6 est, dans la version représentée sur la figure 1 , un tube de carton, sur lequel est enroulé en hélice et collé par adhésif le tissu 7 supportant les dents 3 de la garniture.The sleeve 6 is, in the version shown in FIG. 1, a cardboard tube, on which is helically wound and glued by adhesive the fabric 7 supporting the teeth 3 of the lining.

Dans les zones correspondant au début et à la fin de la garniture , c'est-à-dire dans les zones qui ne sont pas garnies , le fourreau est traversé par un oeillet 8 de renfort.In the zones corresponding to the beginning and the end of the lining, that is to say in the zones which are not furnished, the sheath is crossed by a reinforcement eyelet 8.

La figure 1 représente le cylindre 1 après que le fourreau 6 revêtu de sa garniture 3,7 ait été emmanché sur le corps 4 du cylindre 1. Le fourreau 6 est bloqué sur le corps 4 par introduction d'une vis dans l'oeillet 8 et vissage de celle-ci dans l'orifice fileté lui faisant face dans le corps 4.FIG. 1 shows the cylinder 1 after the sheath 6 coated with its lining 3.7 has been fitted onto the body 4 of the cylinder 1. The sheath 6 is blocked on the body 4 by insertion of a screw into the eyelet 8 and screwing it into the threaded opening facing it in the body 4.

Dans la version représentée à la figure 2, le fourreau 6 est réalisé en métal léger d'une épaisseur plus faible que celle du tube carton de la figure 1. Dans ce cas une bague d'écartement 9 est placée à chaque extrémité du cylindre 1 entre le corps 4 et le fourreau 6. Cette bague 9 a pour fonction de compenser les écarts éventuels en vue d'obtenir un cylindre dont le diamètre de grattage soit acceptable , et ceci quel que soit le diamètre du corps 4 existant.In the version shown in Figure 2, the sleeve 6 is made of light metal with a thickness thinner than that of the cardboard tube of Figure 1. In this case a spacer ring 9 is placed at each end of the cylinder 1 between the body 4 and the sheath 6. The function of this ring 9 is to compensate for any deviations with a view to obtaining a cylinder of which the scraping diameter is acceptable, and this regardless of the diameter of the existing body 4.

Le cylindre gratteur 10 de la figure 3 est un cylindre du type chardon, les dents 3 de la garniture de carde étant inclinées dans la direction de l 'axe de rotation 5 du cylindre.The scraping cylinder 10 of FIG. 3 is a thistle type cylinder, the teeth 3 of the card lining being inclined in the direction of the axis of rotation 5 of the cylinder.

Il comporte un tube central 11 monté rotatif sur des roulements à bille étanches 12 par rapport à un axe 13 le traversant de part en part.It comprises a central tube 11 rotatably mounted on sealed ball bearings 12 with respect to an axis 13 passing right through it.

Sur le tube central 11 est emmanché le fourreau 6 sur lequel est enroulé et collé par un adhésif le tissu 7 supportant les dents 3 de la garniture de carde.On the central tube 11 is fitted the sleeve 6 on which is wound and glued with an adhesive the fabric 7 supporting the teeth 3 of the card lining.

Le fourreau 6 est un tube en carton dont les deux extrémités sont fendues sur une longueur de 20 mm, chacune par deux fentes pratiquées selon des génératrices diamétralement opposées dans les zones sans garniture.The sheath 6 is a cardboard tube, the two ends of which are split over a length of 20 mm, each by two slots made according to diametrically opposite generatrices in the areas without lining.

Le blocage du fourreau 6 sur le tube central 11 est obtenu par les deux anneaux de serrage 14, 15 . La présence des fentes pratiquées dans le fourreau 6 permet de compenser les déformations éventuelles du fourreau 6 lors du serrage contre le tube central 11, déformations dues à la différence existant entre le diamètre extérieur du tube central 11 et le diamètre intérieur du fourreau. La différence de diamètre est de l'ordre de 0,1 à 0,2 mm.The locking of the sleeve 6 on the central tube 11 is obtained by the two clamping rings 14, 15. The presence of the slots made in the sleeve 6 makes it possible to compensate for any deformations of the sleeve 6 during tightening against the central tube 11, deformations due to the difference existing between the outside diameter of the central tube 11 and the inside diameter of the sleeve. The difference in diameter is of the order of 0.1 to 0.2 mm.

Les extrémités du fourreau 6 sont protégées par la coupelle 16 de protection dont la partie annulaire 17 s'étend au-dessus de la zone non garnie , y compris les anneaux de serrage 14, 15 et affleure le dessus des dents 3 de la garniture de carde. Ces coupelles 16 ont pour fonction d'empêcher l'attaque et la sortie brutale des dents 3 sur l'article à traiter.The ends of the sheath 6 are protected by the protective cup 16, the annular part 17 of which extends above the unadorned zone, including the clamping rings 14, 15 and is flush with the top of the teeth 3 of the gasket. card. These cups 16 have the function of preventing the attack and the sudden exit of the teeth 3 on the article to be treated.

Une bague de protection 18, en mousse, placée contre la face arrière de la coupelle 16 empêche les fibres en surface sur l'article à traiter de pénétrer entre l'axe fixe 13 et le support du chardon.A protective ring 18, made of foam, placed against the rear face of the cup 16 prevents the fibers on the surface of the article to be treated from entering between the fixed axis 13 and the thistle support.

La coupelle 16 tient par écrasement du joint torique 19 lors de son enfoncement dans l'alésage du tube central 11.The cup 16 is held by crushing the O-ring 19 when it is pressed into the bore of the central tube 11.

L'invention n'est pas limitée aux deux modes de réalisation qui viennent d'être décrits à titre d'exemples non exhaustifs, mais en couvre toutes les variantes.The invention is not limited to the two embodiments which have just been described by way of non-exhaustive examples, but covers all variants.

On comprend que cette invention sera d'autant plus avantageuse que l'usure de la garniture sera rapide, donc dans les machines à gratter dans lesquelles les cylindres sont entraînés positivement, en particulier les laineuses. En effet dans les chardonneuses , le chardon ne se réaiguise pas et son remplacement n'intervient qu'après usure normale ou accidentelle.It is understood that this invention will be all the more advantageous as the wear of the lining will be rapid, therefore in the scraping machines in which the cylinders are driven positively, in particular the woolen machines. Indeed in the chardonneuses, the thistle does not re-acute and its replacement occurs only after normal or accidental wear.

Ainsi grâce au cylindre à fourreau garni de l'invention, l'utilisateur pourra remplacer les garnitures usagées par simple échange de fourreau, voire même remplacer une garniture par une autre mieux adaptée à certains travaux de grattage.Thus, thanks to the lined barrel cylinder of the invention, the user will be able to replace the used linings by simple exchange of a sheath, or even replace one lining with another better suited to certain scraping works.

Claims (6)

1. Cylindre gratteur pour machine à gratter, du type comportant un corps de révolution tournant autour d'un axe et dont la surface extérieure est revêtue d'une garniture de carde, caractérisé en ce que le corps de révolution est composé : a. d'un premier élément central (11) , de forme extérieure cylindrique, tournant autour d'un axe (5), b. d'un second élément tubulaire (6), dont la surface extérieure (7) est revêtue de la garniture de carde (3) , et dont l'évidement intérieur a un diamètre légèrement supérieur au diamètre extérieur du premier élément (11) , ledit second élément (6) étant monté autour du premier élément (11) par coulissement,
et le cylindre gratteur comporte des moyens de blocage du second élément sur le premier. 1. Scratching cylinder for a scratching machine, of the type comprising a body of revolution rotating about an axis and the outer surface of which is coated with a card lining, characterized in that the body of revolution is composed of: at. a first central element (11), of cylindrical external shape, rotating around an axis (5), b. a second tubular element (6), the outer surface (7) of which is covered with the card lining (3), and the inner recess of which has a diameter slightly greater than the outer diameter of the first element (11), said second element (6) being mounted around the first element (11) by sliding,
and the scraper cylinder comprises means for blocking the second element on the first. 2. Cylindre gratteur selon la revendication 1 caractérisé en ce que, le second élément (6) tubulaire étant réalisé dans un matériau flexible, il comporte à chaque extrémité au moins une fente pratiquée selon une génératrice , et les moyens de blocage consistent en deux anneaux de serrage (14,15) placés chacun au niveau d'une des extrémités et enserrant le second élément (6) dans une zone de celui-ci non revêtu de garniture de carde contre le premier élément (11).2. Scraper cylinder according to claim 1 characterized in that, the second tubular element (6) being made of a flexible material, it comprises at each end at least one slot made according to a generator, and the locking means consist of two rings clamp (14,15) each placed at one of the ends and enclosing the second element (6) in an area thereof uncoated with card lining against the first element (11). 3. Cylindre gratteur selon la revendication 2 caractérisé en ce qu'il est équipé de deux coupelles (16) de protection, chacune étant montée à une extrémité de celui-ci, lesdites coupelles (16) ayant une partie annulaire (17) affleurant la garniture de carde (3) et recouvrant l'anneau de serrage (14,15).3. Scraper cylinder according to claim 2 characterized in that it is equipped with two protective cups (16), each being mounted at one end thereof, said cups (16) having an annular part (17) flush with the card lining (3) and covering the clamping ring (14,15). 4. Cylindre gratteur selon la revendication 1 caractérisé en ce que , le second élément (11) étant réalisé dans un matériau rigide et de faible épaisseur , le cylindre gratteur comporte deux bagues (9) d'écartement , placées entre le premier (11) et le second (6) éléments à chacune de ses extrémités.4. Scraper cylinder according to claim 1 characterized in that, the second element (11) being made of a rigid material and of small thickness, the scraper cylinder has two spacing rings (9), placed between the first (11) and the second (6) elements at each of its ends. 5. Cylindre gratteur selon la revendication 1 caractérisé en ce que, la garniture de carde consistant en un tissu (7) supportant les dents métalliques (3), le tissu (7) est fixé sur le second élément (6) au moyen d'un adhésif.5. scraper cylinder according to claim 1 characterized in that, the card lining consisting of a fabric (7) supporting the metal teeth (3), the fabric (7) is fixed to the second element (6) by means of an adhesive. 6. Cylindre gratteur selon la revendication 5 caractérisé en ce que, le tissu (7) étant enroulé en hélice autour du second élément (6), ce dernier comporte deux oeillets (8) de renfort, un oeillet (8) à chaque extrémité dans une zone dépourvue de garniture de carde, et les moyens de blocage consistent en une vis dont la tige filetée pénètre dans l'oeillet et dont la tête applique le second élément (6) contre le premier (11).6. Scraper cylinder according to claim 5 characterized in that, the fabric (7) being wound in a helix around the second element (6), the latter comprises two eyelets (8) for reinforcement, an eyelet (8) at each end in an area devoid of card lining, and the locking means consist of a screw, the threaded rod of which enters the eyelet and the head of which applies the second element (6) against the first (11).
EP89403185A 1988-11-22 1989-11-20 Exchangeable napping element for a roller raising machine Ceased EP0370882A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8816266 1988-11-22
FR8816266A FR2639368B1 (en) 1988-11-22 1988-11-22 SCRAPER CYLINDER WITH TRIM MOUNTED ON AN INTERCHANGEABLE SLEEVE

Publications (1)

Publication Number Publication Date
EP0370882A1 true EP0370882A1 (en) 1990-05-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89403185A Ceased EP0370882A1 (en) 1988-11-22 1989-11-20 Exchangeable napping element for a roller raising machine

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EP (1) EP0370882A1 (en)
FR (1) FR2639368B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1533410A2 (en) * 2003-11-19 2005-05-25 MARIO CROSTA S.r.l. Raising machine drum with raising elements for high quality fabrics
CN102704051A (en) * 2012-05-22 2012-10-03 山东济宁如意毛纺织股份有限公司 Needle loop maintenance replacement device for gilling machine
CN112726083A (en) * 2020-12-24 2021-04-30 海宁市华亿经编有限公司 Napping machine and processing technology applying same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1388703A (en) * 1963-09-20 1965-02-12 Albert C Scholaert Ets Set of metallic thistle
FR2334778A1 (en) * 1975-12-12 1977-07-08 Scholaert Bachelet Albert IMPROVEMENT IN ROLLING METAL THREAD DEVICES

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1388703A (en) * 1963-09-20 1965-02-12 Albert C Scholaert Ets Set of metallic thistle
FR2334778A1 (en) * 1975-12-12 1977-07-08 Scholaert Bachelet Albert IMPROVEMENT IN ROLLING METAL THREAD DEVICES

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1533410A2 (en) * 2003-11-19 2005-05-25 MARIO CROSTA S.r.l. Raising machine drum with raising elements for high quality fabrics
EP1533410A3 (en) * 2003-11-19 2006-02-22 MARIO CROSTA S.r.l. Raising machine drum with raising elements for high quality fabrics
CN102704051A (en) * 2012-05-22 2012-10-03 山东济宁如意毛纺织股份有限公司 Needle loop maintenance replacement device for gilling machine
CN102704051B (en) * 2012-05-22 2015-01-21 山东济宁如意毛纺织股份有限公司 Needle loop maintenance replacement device for gilling machine
CN112726083A (en) * 2020-12-24 2021-04-30 海宁市华亿经编有限公司 Napping machine and processing technology applying same

Also Published As

Publication number Publication date
FR2639368A1 (en) 1990-05-25
FR2639368B1 (en) 1991-02-22

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