EP0485258A1 - Carriage for cleaning the knitting elements on a knitting machine - Google Patents

Carriage for cleaning the knitting elements on a knitting machine Download PDF

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Publication number
EP0485258A1
EP0485258A1 EP91402888A EP91402888A EP0485258A1 EP 0485258 A1 EP0485258 A1 EP 0485258A1 EP 91402888 A EP91402888 A EP 91402888A EP 91402888 A EP91402888 A EP 91402888A EP 0485258 A1 EP0485258 A1 EP 0485258A1
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EP
European Patent Office
Prior art keywords
knitting
chamber
chimney
cleaning
carriage
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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.)
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Application number
EP91402888A
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German (de)
French (fr)
Inventor
Jean-Pierre Matthelie
Denis Perrin
Julien Warret
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Institut Textile de France
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Institut Textile de France
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Publication date
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Publication of EP0485258A1 publication Critical patent/EP0485258A1/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/32—Devices for removing lint or fluff

Definitions

  • the present invention relates to the cleaning of the mechanical members on which the dust, fibers, fatty particles are clinging during the operation of a knitting loom, and more precisely the mechanical knitting members located at the level of the needle bed of the loom.
  • the passage of the yarns and in particular the yarns of fibers on these knitting members causes by abrasion an accumulation of fiber flocks and particles of fatty substances used for the lubrication of the yarns. This accumulation occurs in particular on the felling teeth of the needle beds. It is at the origin of knitting incidents and also of pollution of knitwear.
  • This device is bulky, it reduces the accessibility to the knitting members, it only concerns circular knitting looms.
  • the aim which the applicant has set for himself is to propose a device which can be applied to all knitting machines, circular and straight, which performs effective cleaning of the knitting members and which is of simple construction.
  • the jet of compressed air allows effective removal of dust, fibers and fatty particles which adhere to the knitting members, and which are immediately evacuated by the chimney, all along the needle bed as the device moves.
  • the chamber covers the part of the bed above the organs in a sufficiently airtight manner that the flow of polluted air is directed only towards the exhaust chimney.
  • the front and rear faces of the chamber are not in contact with the needle beds, they are shaped to allow the passage of knitting members, needles, valves, felling teeth, whatever the position thereof. above the level of the needle bed.
  • the chamber is open because it does not have a bottom, this being constituted by a part of the needle bed, and that it has front and rear faces sufficiently open for the passage of knitting organs.
  • the device comprises an additional blowing nozzle, supplied with compressed air, which is placed in the evacuation chimney and oriented downstream thereof.
  • the additional air flow increases the efficiency of the first flow and prevents dust or fibers from settling in the chimney.
  • the evacuation chimney is terminated by a waste collector, which can be a bag made of a porous material or a container provided with a grid allowing the passage of air and stopping the waste.
  • a waste collector can be a bag made of a porous material or a container provided with a grid allowing the passage of air and stopping the waste.
  • the presence of the complementary flux is particularly useful in the case of the bag, when the porosity of the bag decreases due to the accumulation of waste.
  • the device is intended for cleaning a double needle knitting machine.
  • the device comprises a single chamber which covers the knitting members of the two needle beds, a single exhaust chimney opening into the chamber above the central knitting area and two blowing nozzles, one for each needle bed, the two air jets being generally oriented towards the exhaust chimney.
  • the device comprises a deflecting partition, mounted inside the chamber and at least partially of the exhaust chimney.
  • This partition has the function of deflecting towards the inside of the chimney the two air flows coming from each of the nozzles, so that there is not this phenomenon of turbulence in the chamber, likely to cause the deposit of waste inside the chamber and on the knitting members during the movement of the device.
  • the device comprises a positioning pad, capable of being placed in the housing between the two needle beds, and the front and rear edges of which are rounded.
  • This shoe facilitates guiding the device during its movement on the job. The rounding of the edges avoids the attachment of the threads during knitting on the loom.
  • the positioning pad is equipped with elastic displacement means in height, so that the pad will, following the bottom of the housing between the two needle beds, follow the surface defined by the knitted fabric without risk of damaging it.
  • the deflecting partition is adapted to also act as a positioning pad.
  • the carriage comprises a grip handle equipped with a trigger for controlling the supply of compressed air to the blowing nozzle or nozzles.
  • the exhaust chimney being in a rigid and bent material can act as a handle.
  • the movement of the device can be linked to that of certain parts of the trade.
  • the device may include securing means for making the carriage integral with the cam holder system.
  • the device according to the invention is at a fixed position between two falls, the movement of the carriage relative to the needle bed being ensured by the rotary needle bed.
  • the relative movement of the carriage relative to the needle bed is carried out at moderate speed, the loom possibly being programmed to do this.
  • the cleaning carriage 5 is placed above the upper V-shaped part turned over from the two needle beds 1 and 2.
  • the side walls 6, 7 are in contact with the needle beds 1, 2; they are made of a material allowing relative sliding with respect to the metal needle beds, for example in a plastic material. These side walls 6,7 are extended by the upper walls 8,9 which are substantially respectively parallel to the general direction of the needle beds 1,2.
  • the upper walls 8, 9 define with the side walls 6, 7 the cleaning chamber 10 which overhangs the two needle beds 1, 2 and the parts of the needles 3 and of the felling teeth 4 in contact with the threads during knitting, at the image of a bridge.
  • the exhaust chimney 11 opens into the chamber 10 in line with the plane of symmetry of the two needle beds 1,2. It has an angled shape. At its free end 12 is fixed a bag 13 made of a porous material using a collar 14.
  • a deflecting partition 15 is mounted along the plane of symmetry of the two needle beds 1,2; it is integral with the upper walls 8, 9 and / or with the chimney 11. It cuts the cleaning chamber 10 into two separate compartments, one 10 a corresponding to the first bed 1, the other 10 b to the second bed 2 .
  • the carriage 1 is equipped with three blowing nozzles 16, 17, 18, supplied with compressed air.
  • Two nozzles 16,17 penetrate into each of the compartments 10 a , 10 b of the chamber 10. Each is oriented obliquely relative to the plane of the corresponding needle bed, and towards the knitting members that are the needles 3 and the felling teeth 4.
  • the third nozzle 18 enters the exhaust chimney, being directed towards the bag 13.
  • the cleaning cart works as follows. Periodically when a certain accumulation of waste near the knitting members, the operator takes the manual carriage 5 and places it on the loom in the position where it is shown in FIG. 1, the lower part of the partition 15 being in the housing 19 between the two needle beds and the side walls 6,7 being supported on the top of the needle beds 1,2.
  • the operator operates the trigger for controlling the compressed air supply, not shown, by grasping the bent part of the chimney 11, acting as a handle.
  • the compressed air at a pressure of for example between 3 and 6 bars, takes off the waste adhering to the knitting members and to the needle bed at each of the compartments 10 a , 10 b and drives them into the chimney 11 and into the bag 13 collector.
  • the air jet from the auxiliary nozzle 18 helps propel the waste into the bag 13.
  • the operator moves the carriage 5 at low speed, for example from 0.2 to 0.5 m / s, along the loom so as to carry out a complete cleaning.
  • the carriage 5 is either removed from the loom and is implemented on another loom, or it is put in the parking position on the loom, at one or the other end of the loom , outside the needle beds. It is understood that during cleaning the thread guides are released from the needle beds.
  • FIG. 2 shows an exemplary embodiment of the blowing chamber 24 in which the blowing nozzles 20,21 are pipes hollowed out in the walls 22,23 of the chamber 24.
  • the spacing e between the internal face of the upper wall 22, 23 and the needle bed is sufficiently small, with regard to the length L of the chamber, measured in the direction of movement of the carriage (FIG. 3), so that the jet of air coming from line 20 is effectively directed towards the knitting members then towards the chimney 33 without being diverted towards the anterior and posterior openings of the chamber.
  • the spacing e is 5mm, for a length L of the order of 100mm.
  • FIG. 3 shows an exemplary embodiment of the deflecting partition, acting as a positioning pad 25.
  • This pad 25 is a plate, the lower part 28 of which has its front edges 26 and rear 27 rounded.
  • the shoe 25 is movable in height, with a permanent downward bias under the effect of two springs 29,30, limited by two stops 31,32, for example two pins.
  • the shoe 25 can move on the knitted fabric being formed in the housing 19 between the two needle beds 1,2 without damaging the latter. It therefore has a function of centering the carriage 5.
  • the air jet coming from the nozzle 21 is, after cleaning of the knitting members, deflected by the shoe 25 in the duct of the chimney 33.
  • the invention is not limited to the manual cleaning trolley for a double needle bed straight knitting machine which has just been described, but covers all variants thereof.
  • the carriage can, for example, be adapted to double needle bed circular knitting machines, in which the needle beds are visible.
  • the angle formed by the two upper walls will be a right angle, one wall being vertical and the other horizontal.
  • the trolley will be placed between two successive falls. It can be with two separate chambers as above for the simultaneous cleaning of the knitting members of two needle beds or it can be adapted for the cleaning of a single needle bed; in the latter case there will be two carts located at two places on the loom, each for cleaning a needle bed.
  • the carriage will preferably be secured to the cam holder system on looms with fixed needle beds and rotating cams; it will be fixed on the rotary needle looms.
  • the carriage of the invention can also be adapted to move at the same time as the cam holder system, being either mechanically integral with said system, or incorporated into said system.
  • the cart will have two separate chambers and retractable, a room for each needle bed; in normal operation of the cam holder system, the chambers will be retracted so as not to come into contact with the wire guides; they will be positioned above the needle beds, in accordance with the invention, during the cleaning cycle, the thread guides being placed out of reach.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Abstract

The cleaning carriage comprises an open chamber (10) covering the knitting elements (3, 4), a blowing nozzle (16, 17) fed with compressed air and oriented inside the chamber (10) towards the elements, and a chimney (11) connected to the chamber (10) for the removal of the polluted air and the collection of the waste, for example in a bag (13). For a double-section knitting machine, the chamber (10) covers the knitting elements of the two sections (1, 2), the chimney (11) opens out in the plane of symmetry of the sections, and there are two blowing nozzles (16, 17) oriented towards the chimney (11). Preferably, a positioning plate (15) functioning as a deflecting partition divides the chamber (10) in two and penetrates into the receptacle (19) between the two sections (1, 2). <IMAGE>

Description

La présente invention concerne le nettoyage des organes mécaniques sur lesquels s'accrochent les poussières, fibres, particules grasses lors du fonctionnement d'un métier à tricoter, et plus précisément les organes mécaniques de tricotage situés au niveau de la fonture du métier.The present invention relates to the cleaning of the mechanical members on which the dust, fibers, fatty particles are clinging during the operation of a knitting loom, and more precisely the mechanical knitting members located at the level of the needle bed of the loom.

Le passage des fils et notamment des filés de fibres sur ces organes de tricotage provoque par abrasion une accumulation de bourres de fibres et de particules des corps gras utilisés pour la lubrification des fils. Cette accumulation se produit en particulier sur les dents d'abattage des fontures. Elle est à l'origine d'incidents de tricotage et aussi de la pollution des tricots.The passage of the yarns and in particular the yarns of fibers on these knitting members causes by abrasion an accumulation of fiber flocks and particles of fatty substances used for the lubrication of the yarns. This accumulation occurs in particular on the felling teeth of the needle beds. It is at the origin of knitting incidents and also of pollution of knitwear.

Différentes techniques ont été utilisées pour essayer d'éviter ou de limiter ces accumulations. La technique la plus courante consiste à réaliser un nettoyage préventif périodique par soufflage sur les organes de tricotage à l'aide de buses soit manipulables manuellement par l'opérateur, soit à demeure sur le métier notamment circulaire. Le résultat obtenu par ce soufflage n'est pas totalement satisfaisant puisque les bourres décrochées des organes partent dans l'atmosphère et se redéposent de nouveau.Different techniques have been used to try to avoid or limit these accumulations. The most common technique consists in carrying out periodic preventive cleaning by blowing on the knitting members with the aid of nozzles which can be manipulated manually by the operator, or permanently on the particular circular loom. The result obtained by this blowing is not entirely satisfactory since the loose flocks of the organs leave in the atmosphere and are redeposited again.

Pour les métiers à tricoter circulaires, on a proposé par le document US.A.3,535,895 un dispositif de nettoyage totalement intégré au métier. Ce dispositif comprend deux chambres annulaires entourant la fonture du métier, l'une alimentée en air comprimé avec des fentes d'injection dirigées vers les organes de tricotage et l'autre reliée à une source du vide collectant le flux d'air après décrochement des salissures.For circular knitting looms, the document US.A.3,535,895 has proposed a cleaning device totally integrated into the loom. This device comprises two annular chambers surrounding the needle bed of the loom, one supplied with compressed air with injection slots directed towards the knitting members and the other connected to a source of vacuum collecting the air flow after detachment of the soiling.

Ce dispositif est encombrant, il diminue l'accessibilité aux organes de tricotage , il ne concerne que les métiers à tricoter circulaires.This device is bulky, it reduces the accessibility to the knitting members, it only concerns circular knitting looms.

Dans le domaine des métiers à tricoter rectilignes, on a proposé d'intégrer au chariot porte-cames des buses d'aspiration, mais un tel système ne permet pas un décollage efficace des bourres adhérant aux parties métalliques.In the field of rectilinear knitting machines, it has been proposed to integrate suction nozzles into the cam carriage, but such a system does not allow effective removal of the flocks adhering to the metal parts.

Le but que s'est fixé le demandeur est de proposer un dispositif qui soit d'application sur tous les métiers à tricoter, circulaires et rectilignes, qui réalise un nettoyage efficace des organes de tricotage et qui soit d'une réalisation simple.The aim which the applicant has set for himself is to propose a device which can be applied to all knitting machines, circular and straight, which performs effective cleaning of the knitting members and which is of simple construction.

Ce but est parfaitement atteint par le dispositif de l'invention. Il s'agit d'un dispositif pour le nettoyage périodique des organes de tricotage d'un métier à tricoter. De manière caractéristique ce dispositif se présente sous forme d'un chariot apte à être déplacé sur la ou les fontures au-dessus desdits organes et il comporte :

  • a) une chambre ouverte recouvrant lesdits organes de tricotage,
  • b) une buse de soufflage alimentée en air comprimé et orientée vers la zone correspondant auxdits organes à l'intérieur de la chambre,
  • c) une cheminée , raccordée à la chambre, pour l'évacuation de l'air après son passage sur les organes de tricotage.
This object is perfectly achieved by the device of the invention. It is a device for the periodic cleaning of the knitting members of a knitting machine. Typically, this device is in the form of a carriage capable of being moved over the needle bed (s) above said members and it comprises:
  • a) an open chamber covering said knitting members,
  • b) a blowing nozzle supplied with compressed air and oriented towards the zone corresponding to said members inside the chamber,
  • c) a chimney, connected to the chamber, for the evacuation of air after it has passed over the knitting members.

Le jet d'air comprimé permet un décollage efficace des poussières , fibres et particules grasses qui adhèrent aux organes de tricotage, et qui sont immédiatement évacuées par la cheminée , tout le long de la fonture au fur et à mesure du déplacement du dispositif. La chambre recouvre la partie de la fonture au-dessus des organes d'une manière suffisamment étanche pour que le flux d'air pollué soit dirigé uniquement vers la cheminée d'évacuation. Cependant les faces antérieure et postérieure de la chambre ne sont pas en contact avec les fontures, elles sont conformées pour permettre le passage des organes de tricotage, aiguilles, clapets, dents d'abattage, quelle que soit la position de ceux-ci au-dessus du niveau de la fonture. Dans le présent texte on dit que la chambre est ouverte du fait qu'elle ne comporte pas de fond, celui-ci étant constitué par une partie de la fonture , et qu'elle a des faces antérieure et postérieure suffisamment ouvertes pour le passage des organes de tricotage.The jet of compressed air allows effective removal of dust, fibers and fatty particles which adhere to the knitting members, and which are immediately evacuated by the chimney, all along the needle bed as the device moves. The chamber covers the part of the bed above the organs in a sufficiently airtight manner that the flow of polluted air is directed only towards the exhaust chimney. However, the front and rear faces of the chamber are not in contact with the needle beds, they are shaped to allow the passage of knitting members, needles, valves, felling teeth, whatever the position thereof. above the level of the needle bed. In the present text, it is said that the chamber is open because it does not have a bottom, this being constituted by a part of the needle bed, and that it has front and rear faces sufficiently open for the passage of knitting organs.

De préférence le dispositif comporte une buse complémentaire de soufflage, alimentée en air comprimé , qui est placée dans la cheminée d'évacuation et orientée vers l'aval de celle-ci.Preferably, the device comprises an additional blowing nozzle, supplied with compressed air, which is placed in the evacuation chimney and oriented downstream thereof.

Le flux d'air complémentaire augmente l'efficacité du premier flux et évite que les poussières ou fibres ne se déposent dans la cheminée.The additional air flow increases the efficiency of the first flow and prevents dust or fibers from settling in the chimney.

De préférence, la cheminée d'évacuation est terminée par un collecteur de déchets, qui peut être un sac réalisé dans un matériau poreux ou un récipient muni d'une grille permettant le passage de l'air et arrêtant les déchets. La présence du flux complémentaire est particulièrement utile dans le cas du sac, lorsque la porosité du sac diminue du fait de l'accumulation des déchets.Preferably, the evacuation chimney is terminated by a waste collector, which can be a bag made of a porous material or a container provided with a grid allowing the passage of air and stopping the waste. The presence of the complementary flux is particularly useful in the case of the bag, when the porosity of the bag decreases due to the accumulation of waste.

Selon une version préférée de réalisation , le dispositif est destiné au nettoyage d'un métier à tricoter double fonture. Dans ce cas, le dispositif comporte une seule chambre qui recouvre les organes de tricotage des deux fontures, une seule cheminée d'évacuation débouchant dans la chambre au-dessus de la zone centrale de tricotage et deux buses de soufflage , une pour chaque fonture, les deux jets d'air étant globalement orientés vers la cheminée d'évacuation.According to a preferred embodiment, the device is intended for cleaning a double needle knitting machine. In this case, the device comprises a single chamber which covers the knitting members of the two needle beds, a single exhaust chimney opening into the chamber above the central knitting area and two blowing nozzles, one for each needle bed, the two air jets being generally oriented towards the exhaust chimney.

De préférence dans cette version , le dispositif comporte une cloison déflectrice, montée à l'intérieur de la chambre et au moins partiellement de la cheminée d'évacuation. Cette cloison a pour fonction de dévier vers l'intérieur de la cheminée les deux flux d'air provenant de chacune des buses, de manière à ce qu'il n'y ait pas ce phénomène de turbulence dans la chambre , susceptible d'entraîner le dépôt de déchets à l'intérieur de la chambre et sur les organes de tricotage au cours du déplacement du dispositif.Preferably in this version, the device comprises a deflecting partition, mounted inside the chamber and at least partially of the exhaust chimney. This partition has the function of deflecting towards the inside of the chimney the two air flows coming from each of the nozzles, so that there is not this phenomenon of turbulence in the chamber, likely to cause the deposit of waste inside the chamber and on the knitting members during the movement of the device.

Avantageusement le dispositif comporte un patin de positionnement, apte à être placé dans le logement entre les deux fontures, et dont les bords avant et arrière sont arrondis. Ce patin facilite le guidage du dispositif lors de son déplacement sur le métier. L'arrondi des bords évite l'accrochage des fils en cours de tricotage sur le métier.Advantageously, the device comprises a positioning pad, capable of being placed in the housing between the two needle beds, and the front and rear edges of which are rounded. This shoe facilitates guiding the device during its movement on the job. The rounding of the edges avoids the attachment of the threads during knitting on the loom.

De préférence le patin de positionnement est équipé de moyens de déplacement élastique en hauteur, de sorte que le patin va, en suivant le fond du logement entre les deux fontures, suivre la surface délimitée par le tricot sans risque de le détériorer.Preferably the positioning pad is equipped with elastic displacement means in height, so that the pad will, following the bottom of the housing between the two needle beds, follow the surface defined by the knitted fabric without risk of damaging it.

Dans la version préférée précitée, la cloison déflectrice est adaptée pour faire office également de patin de positionnement.In the aforementioned preferred version, the deflecting partition is adapted to also act as a positioning pad.

S'agissant d'un dispositif dont le déplacement est manuel, le chariot comporte une poignée de préhension équipée d'une gachette de commande de l'alimentation en air comprimé de la ou des buses de soufflage. La cheminée d'évacuation étant dans un matériau rigide et coudée peut faire office de poignée.As this is a device the displacement of which is manual, the carriage comprises a grip handle equipped with a trigger for controlling the supply of compressed air to the blowing nozzle or nozzles. The exhaust chimney being in a rigid and bent material can act as a handle.

Le déplacement du dispositif peut être lié à celui de certaines pièces du métier. Par exemple s'agissant d'un métier rectiligne ou circulaire ayant un système porte-cames mobile, le dispositif peut comporter des moyens de solidarisation pour rendre le chariot solidaire du système porte-cames.The movement of the device can be linked to that of certain parts of the trade. For example, in the case of a rectilinear or circular loom having a movable cam holder system, the device may include securing means for making the carriage integral with the cam holder system.

Par exemple s'agissant d'un métier circulaire à fonture tournante, le dispositif selon l'invention est à poste fixe entre deux chutes, le déplacement du chariot par rapport à la fonture étant assuré par la fonture tournante.For example, in the case of a circular loom with a rotary needle bed, the device according to the invention is at a fixed position between two falls, the movement of the carriage relative to the needle bed being ensured by the rotary needle bed.

Avantageusement le déplacement relatif du chariot par rapport à la fonture est réalisé à vitesse modérée, le métier étant éventuellement programmé pour ce faire.Advantageously, the relative movement of the carriage relative to the needle bed is carried out at moderate speed, the loom possibly being programmed to do this.

L'invention sera mieux comprise à la lecture de la description qui va être faite du mode préféré de réalisation d'un chariot manuel de nettoyage pour métier rectiligne double fonture illustré par le dessin annexé dans lequel:

  • La figure 1 est une vue schématique illustrant le principe du chariot
  • La figure 2 est une vue en coupe transversale de la chambre
  • La figure 3 est une vue de face selon l'axe AA′ de la figure 2 du patin de positionnement
The invention will be better understood on reading the description which will be given of the preferred embodiment of a manual cleaning trolley for a rectilinear double needle bed illustrated by the appended drawing in which:
  • Figure 1 is a schematic view illustrating the principle of the carriage
  • Figure 2 is a cross-sectional view of the chamber
  • Figure 3 is a front view along the axis AA 'of Figure 2 of the positioning pad

On a représenté sur la figure 1 en coupe transversale les deux fontures 1 et 2 du métier avec leurs aiguilles 3 et leurs dents d'abattage 4.There is shown in Figure 1 in cross section the two needle beds 1 and 2 of the loom with their needles 3 and their felling teeth 4.

Le chariot de nettoyage 5 vient se placer au-dessus de la partie supérieure en V retourné des deux fontures 1 et 2. Les parois latérales 6,7 sont en contact avec les fontures 1, 2; elles sont dans un matériau permettant le glissement relatif par rapport aux fontures métalliques , par exemple dans un matériau plastique. Ces parois latérales 6,7 sont prolongées par les parois supérieures 8,9 qui sont sensiblement respectivement parallèles à la direction générale des fontures 1,2.The cleaning carriage 5 is placed above the upper V-shaped part turned over from the two needle beds 1 and 2. The side walls 6, 7 are in contact with the needle beds 1, 2; they are made of a material allowing relative sliding with respect to the metal needle beds, for example in a plastic material. These side walls 6,7 are extended by the upper walls 8,9 which are substantially respectively parallel to the general direction of the needle beds 1,2.

Les parois supérieurs 8,9 délimitent avec les parois latérales 6,7 la chambre de nettoyage 10 qui surplombe les deux fontures 1,2 et les parties des aiguilles 3 et des dents d'abattage 4 en contact avec les fils lors du tricotage, à l'image d'un pont.The upper walls 8, 9 define with the side walls 6, 7 the cleaning chamber 10 which overhangs the two needle beds 1, 2 and the parts of the needles 3 and of the felling teeth 4 in contact with the threads during knitting, at the image of a bridge.

La cheminée d'évacuation 11 débouche dans la chambre 10 au droit du plan de symétrie des deux fontures 1,2. Elle a une forme coudée. A son extrémité libre 12 est fixé un sac 13 réalisé dans une matière poreuse à l'aide d'un collier 14.The exhaust chimney 11 opens into the chamber 10 in line with the plane of symmetry of the two needle beds 1,2. It has an angled shape. At its free end 12 is fixed a bag 13 made of a porous material using a collar 14.

Une cloison déflectrice 15 est montée selon le plan de symétrie des deux fontures 1,2 ; elle est solidaire des parois supérieures 8,9 et/ou de la cheminée 11. Elle coupe la chambre de nettoyage 10 en deux compartiments distincts l'un 10a correspondant à la première fonture 1, l'autre 10b à la seconde fonture 2.A deflecting partition 15 is mounted along the plane of symmetry of the two needle beds 1,2; it is integral with the upper walls 8, 9 and / or with the chimney 11. It cuts the cleaning chamber 10 into two separate compartments, one 10 a corresponding to the first bed 1, the other 10 b to the second bed 2 .

Le chariot 1 est équipé de trois buses de soufflage 16,17,18 , alimentées en air comprimé . Deux buses 16,17 pénétrent dans chacun des compartiments 10a, 10b de la chambre 10. Chacune est orientée obliquement par rapport au plan de la fonture correspondante, et vers les organes de tricotage que sont les aiguilles 3 et les dents d'abattage 4. La troisième buse 18 pénètre dans la cheminée d'évacuation, étant dirigée vers le sac 13.The carriage 1 is equipped with three blowing nozzles 16, 17, 18, supplied with compressed air. Two nozzles 16,17 penetrate into each of the compartments 10 a , 10 b of the chamber 10. Each is oriented obliquely relative to the plane of the corresponding needle bed, and towards the knitting members that are the needles 3 and the felling teeth 4. The third nozzle 18 enters the exhaust chimney, being directed towards the bag 13.

Le fonctionnement du chariot de nettoyage est le suivant. Périodiquement lorsqu'on constate une certaine accumulation de déchets près des organes de tricotage, l'opérateur prend le chariot manuel 5 et le place sur le métier dans la position où il est représenté à la figure 1, la partie basse de la cloison 15 étant dans le logement 19 entre les deux fontures et les parois latérales 6,7 étant en appui sur le dessus des fontures 1,2.The cleaning cart works as follows. Periodically when a certain accumulation of waste near the knitting members, the operator takes the manual carriage 5 and places it on the loom in the position where it is shown in FIG. 1, the lower part of the partition 15 being in the housing 19 between the two needle beds and the side walls 6,7 being supported on the top of the needle beds 1,2.

L'opérateur manoeuvre la gachette de commande d'alimentation en air comprimé ,non représentée, en saisissant la partie coudée de la cheminée 11, faisant office de poignée. L'air comprimé, à une pression comprise par exemple entre 3 et 6 bars, décolle les déchets adhérant aux organes de tricotage et à la fonture au niveau de chacun des compartiments 10a, 10b et les entraîne dans la cheminée 11 et dans le sac 13 collecteur. Le jet d'air provenant de la buse auxiliaire 18 aide à propulser les déchets dans le sac 13.The operator operates the trigger for controlling the compressed air supply, not shown, by grasping the bent part of the chimney 11, acting as a handle. The compressed air, at a pressure of for example between 3 and 6 bars, takes off the waste adhering to the knitting members and to the needle bed at each of the compartments 10 a , 10 b and drives them into the chimney 11 and into the bag 13 collector. The air jet from the auxiliary nozzle 18 helps propel the waste into the bag 13.

L'opérateur déplace le chariot 5 à faible vitesse, par exemple de 0,2 à 0,5 m/s, le long du métier de manière à procéder à un nettoyage complet.The operator moves the carriage 5 at low speed, for example from 0.2 to 0.5 m / s, along the loom so as to carry out a complete cleaning.

Une fois l'opération de nettoyage terminée, le chariot 5 est soit retiré du métier et est mis en oeuvre sur un autre métier, soit il est mis en position de stationnement sur le métier, à l'une ou l'autre extrémité du métier, en dehors des fontures. On comprend que pendant le nettoyage les guide-fils sont dégagés des fontures.Once the cleaning operation is complete, the carriage 5 is either removed from the loom and is implemented on another loom, or it is put in the parking position on the loom, at one or the other end of the loom , outside the needle beds. It is understood that during cleaning the thread guides are released from the needle beds.

On a représenté sur la figure 2 un exemple de réalisation de la chambre de soufflage 24 dans lequel les buses de soufflage 20,21 sont des canalisations creusées dans les parois 22,23 de la chambre 24. L'écartement e entre la face interne de la paroi supérieure 22,23 et la fonture est suffisamment faible, au regard de la longueur L de la chambre, mesurée dans le sens du déplacement du chariot (figure 3), pour que le jet d'air provenant de la canalisation 20 soit efficacement dirigé vers les organes de tricotage puis vers la cheminée 33 sans être dévié vers les ouvertures antérieure et postérieure de la chambre. Dans l'exemple de réalisation illustré à la figure 2, l'écartement e est de 5mm, pour une longueur L de l'ordre de 100mm.FIG. 2 shows an exemplary embodiment of the blowing chamber 24 in which the blowing nozzles 20,21 are pipes hollowed out in the walls 22,23 of the chamber 24. The spacing e between the internal face of the upper wall 22, 23 and the needle bed is sufficiently small, with regard to the length L of the chamber, measured in the direction of movement of the carriage (FIG. 3), so that the jet of air coming from line 20 is effectively directed towards the knitting members then towards the chimney 33 without being diverted towards the anterior and posterior openings of the chamber. In the embodiment illustrated in Figure 2, the spacing e is 5mm, for a length L of the order of 100mm.

On a représenté sur la figure 3 un exemple de réalisation de la cloison déflectrice, faisant office de patin de positionnement 25. Ce patin 25 est une plaque dont la partie basse 28 a ses bords avant 26 et arrière 27 arrondis. Le patin 25 est mobile en hauteur, avec une sollicitation permanente vers le bas sous l'effet de deux ressorts 29,30, limitée par deux butées 31,32, par exemple deux goupilles.FIG. 3 shows an exemplary embodiment of the deflecting partition, acting as a positioning pad 25. This pad 25 is a plate, the lower part 28 of which has its front edges 26 and rear 27 rounded. The shoe 25 is movable in height, with a permanent downward bias under the effect of two springs 29,30, limited by two stops 31,32, for example two pins.

Le patin 25 peut se déplacer sur le tricot en cours de formation dans le logement 19 entre les deux fontures 1,2 sans détériorer celui-ci .Il a donc une fonction de centrage du chariot 5.The shoe 25 can move on the knitted fabric being formed in the housing 19 between the two needle beds 1,2 without damaging the latter. It therefore has a function of centering the carriage 5.

Le jet d'air provenant de la buse 21 est, après nettoyage des organes de tricotage, dévié par le patin 25 dans le conduit de la cheminée 33.The air jet coming from the nozzle 21 is, after cleaning of the knitting members, deflected by the shoe 25 in the duct of the chimney 33.

L'invention n'est pas limitée au chariot manuel de nettoyage pour métier à tricoter rectiligne double fonture qui vient d'être décrit, mais en couvre toutes les variantes.The invention is not limited to the manual cleaning trolley for a double needle bed straight knitting machine which has just been described, but covers all variants thereof.

Le chariot peut par exemple être adapté sur les métiers à tricoter circulaires double fonture, dans lesquels les fontures sont apparentes. Dans ce cas, l'angle formé par les deux parois supérieures sera un angle droit, une paroi étant verticale et l'autre horizontale. Le chariot sera placé entre deux chutes successives. Il pourra être à deux chambres distinctes comme ci-dessus pour le nettoyage simultané des organes de tricotage de deux fontures ou bien il pourra être adapté pour le nettoyage d'une seule fonture; dans ce dernier cas il y aura deux chariots implantés à deux endroits sur le métier, chacun pour le nettoyage d'une fonture. Le chariot sera de préférence solidaire du système porte-cames sur les métiers à fontures fixes et cames tournantes; il sera fixe sur les métiers à fontures tournantes.The carriage can, for example, be adapted to double needle bed circular knitting machines, in which the needle beds are visible. In this case, the angle formed by the two upper walls will be a right angle, one wall being vertical and the other horizontal. The trolley will be placed between two successive falls. It can be with two separate chambers as above for the simultaneous cleaning of the knitting members of two needle beds or it can be adapted for the cleaning of a single needle bed; in the latter case there will be two carts located at two places on the loom, each for cleaning a needle bed. The carriage will preferably be secured to the cam holder system on looms with fixed needle beds and rotating cams; it will be fixed on the rotary needle looms.

Pour les métiers à tricoter rectilignes, le chariot de l'invention peut aussi être adapté pour se déplacer en même temps que le système porte-cames, étant soit solidarisable mécaniquement audit système , soit incorporé dans ledit système. Dans ce dernier cas, de préférence le chariot comportera deux chambres distinctes et escamotables , une chambre pour chaque fonture; en fonctionnement normal du système porte-cames les chambres seront escamotées de manière à ne pas entrer en contact avec les guide-fils; elles seront positionnées au-dessus des fontures, conformément à l'invention, au cours du cycle de nettoyage, les guide-fils étant mis hors de portée.For rectilinear knitting machines, the carriage of the invention can also be adapted to move at the same time as the cam holder system, being either mechanically integral with said system, or incorporated into said system. In the latter case, preferably the cart will have two separate chambers and retractable, a room for each needle bed; in normal operation of the cam holder system, the chambers will be retracted so as not to come into contact with the wire guides; they will be positioned above the needle beds, in accordance with the invention, during the cleaning cycle, the thread guides being placed out of reach.

Claims (11)

Dispositif pour le nettoyage périodique des organes de tricotage (3,4) d'un métier à tricoter, caractérisé en ce qu'il se présente sous la forme d'un chariot apte à être déplacé sur la ou les fontures (1,2) au-dessus desdits organes et en ce qu'il comporte : a) une chambre (10) ouverte recouvrant lesdits organes de tricotage (3,4), b) une buse de soufflage (16,17) alimentée en air comprimé et orientée vers la zone correspondant auxdits organes à l'intérieur de la chambre, c) une cheminée (11), raccordée à la chambre (10), pour l'évacuation de l'air après son passage sur les organes de tricotage. Device for the periodic cleaning of the knitting members (3,4) of a knitting machine, characterized in that it is in the form of a carriage capable of being moved over the needle bed (s) (1,2) above said organs and in that it comprises: a) an open chamber (10) covering said knitting members (3,4), b) a blowing nozzle (16,17) supplied with compressed air and oriented towards the zone corresponding to said members inside the chamber, c) a chimney (11), connected to the chamber (10), for the evacuation of air after it has passed over the knitting members. Dispositif selon la revendication 1 caractérisé en ce qu'il comporte une buse complémentaire (18) de soufflage , alimentée en air comprimé , qui est placée dans la cheminée d'évacuation (11) et orientée vers l'aval de celle-ci.Device according to claim 1 characterized in that it comprises an additional blowing nozzle (18), supplied with compressed air, which is placed in the evacuation chimney (11) and oriented downstream thereof. Dispositif selon l'une des revendications 1 ou 2 caractérisé en ce que la cheminée d'évacuation (11) est terminée par un sac poreux (13) de collecte des déchets.Device according to one of claims 1 or 2 characterized in that the evacuation chimney (11) is terminated by a porous bag (13) for collecting waste. Dispositif selon la revendication 1 pour le nettoyage d'un métier à tricoter double fonture caractérisé en ce qu'il comporte une chambre (10) qui recouvre les organes de tricotage (3,4) des deux fontures (1,2) , une cheminée (11) d'évacuation débouchant dans la chambre (10) au-dessus de la zone centrale (19) de tricotage et deux buses de soufflage (16,17) , une pour chaque fonture, le jet d'air étant dans la direction de la cheminée d'évacuation.Device according to claim 1 for cleaning a double needle knitting machine, characterized in that it comprises a chamber (10) which covers the knitting members (3,4) of the two needle beds (1,2), a chimney (11) evacuation opening into the chamber (10) above the central knitting area (19) and two blowing nozzles (16,17), one for each needle bed, the air jet being in the direction from the exhaust chimney. Dispositif selon la revendication 4 caractérisé en ce qu'il comporte une cloison déflectrice (15) montée à l'intérieur de la chambre (10) et au moins partiellement de la cheminée d'évacuation (11) au-dessus de la zone centrale de tricotage.Device according to claim 4 characterized in that it comprises a deflecting partition (15) mounted inside the chamber (10) and at least partially of the exhaust chimney (11) above the central zone of knitting. Dispositif selon la revendication 4 caractérisé en ce qu'il comporte un patin de positionnement , apte à être placé dans le logement (19) entre les deux fontures (1,2) , et dont les bords avant (26) et arrière (27) sont arrondis.Device according to claim 4 characterized in that it comprises a positioning pad, suitable for being placed in the housing (19) between the two needle beds (1,2), and whose front edges (26) and rear (27) are rounded. Dispositif selon la revendication 6 caractérisé en ce que le patin de positionnement (25) est équipé de moyens de déplacement élastique (29,30) en hauteur , de sorte que le patin va, en suivant le fond du logement (19) entre les deux fontures, suivre la surface délimitée par le tricot sans risque de le détériorer.Device according to claim 6 characterized in that the positioning pad (25) is equipped with elastic displacement means (29,30) in height, so that the pad goes, following the bottom of the housing (19) between the two bed, follow the surface defined by the knit without risk of damaging it. Dispositif selon la revendication 1 caractérisé en ce que , le déplacement étant manuel, le chariot (5) comporte une poignée de préhension équipée d'une gachette de commande de l'alimentation en air comprimé de la ou des buses (16,17,18) de soufflage.Device according to claim 1 characterized in that, the movement being manual, the carriage (5) comprises a grip handle equipped with a trigger for controlling the supply of compressed air to the nozzle (s) (16,17,18 ) blowing. Dispositif selon la revendication 1 pour le nettoyage d'un métier à tricoter ayant un système porte-cames mobile caractérisé en ce qu'il comporte des moyens de solidarisation pour rendre le chariot solidaire du système porte-cames.Device according to claim 1 for cleaning a knitting loom having a movable cam holder system characterized in that it comprises securing means for making the carriage integral with the cam holder system. Dispositif selon la revendication 1 pour le nettoyage d'un métier à tricoter circulaire à fonture tournante caractérisé en ce qu'il est monté à poste fixe entre deux chutes du métier.Device according to claim 1 for cleaning a circular knitting loom with rotary needlework, characterized in that it is mounted at a fixed position between two falls from the loom. Dispositif selon l'une des revendications 9 ou 10 caractérisé en ce que la commande de déplacement de l'organe mobile est programmée pour un déplacement à vitesse réduite pendant le cycle de nettoyage.Device according to one of claims 9 or 10 characterized in that the movement control of the movable member is programmed for movement at reduced speed during the cleaning cycle.
EP91402888A 1990-11-08 1991-10-29 Carriage for cleaning the knitting elements on a knitting machine Withdrawn EP0485258A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9014469 1990-11-08
FR9014469A FR2669352B1 (en) 1990-11-20 1990-11-20 CART FOR CLEANING KNITTING BODIES OF A KNITTING MATERIAL.

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EP0485258A1 true EP0485258A1 (en) 1992-05-13

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EP91402888A Withdrawn EP0485258A1 (en) 1990-11-08 1991-10-29 Carriage for cleaning the knitting elements on a knitting machine

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EP (1) EP0485258A1 (en)
FR (1) FR2669352B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5363676A (en) * 1992-04-02 1994-11-15 Precision Fukuhara Works, Ltd. Dust sucking and discharging device for fiber wastes on knitting machine
US5408850A (en) * 1993-02-02 1995-04-25 Precision Fukuhara Works, Ltd. Fiber waste collector/remover and cooling apparatus for use with a circular knitting machine
EP0816546A2 (en) * 1996-07-03 1998-01-07 ALANDALE INDUSTRIES, Inc. Means for deterring lint and debris accumulation on the knitting elements of a circular knitting machine

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DE1113786B (en) * 1957-09-16 1961-09-14 Fouquet Werk Frauz & Planck Fluff blow-off device for right / right circular knitting machines
US3535895A (en) * 1966-09-05 1970-10-27 Luwa Ag Apparatus for pneumatically cleaning the work zone of centrosymmetrical textile machines
DE2708436B1 (en) * 1977-02-26 1978-07-20 Mayer & Cie Maschinenfabrik Device for pneumatic dust removal from the knitting area of a rounding machine for the production of knitted fabrics
DE3305795A1 (en) * 1983-02-19 1984-08-23 Seitz, Herbert, 8500 Nürnberg Device for cleaning and removing dust from flat knitting machines in the region of the knitting operation
GB2172016A (en) * 1985-02-22 1986-09-10 Herbert Seitz Dust extraction equipment for flat bed knitting machines
GB2196350A (en) * 1986-10-15 1988-04-27 Stoll H Gmbh & Co Dust extraction in flat knitting machines

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1113786B (en) * 1957-09-16 1961-09-14 Fouquet Werk Frauz & Planck Fluff blow-off device for right / right circular knitting machines
US3535895A (en) * 1966-09-05 1970-10-27 Luwa Ag Apparatus for pneumatically cleaning the work zone of centrosymmetrical textile machines
DE2708436B1 (en) * 1977-02-26 1978-07-20 Mayer & Cie Maschinenfabrik Device for pneumatic dust removal from the knitting area of a rounding machine for the production of knitted fabrics
DE3305795A1 (en) * 1983-02-19 1984-08-23 Seitz, Herbert, 8500 Nürnberg Device for cleaning and removing dust from flat knitting machines in the region of the knitting operation
GB2172016A (en) * 1985-02-22 1986-09-10 Herbert Seitz Dust extraction equipment for flat bed knitting machines
GB2196350A (en) * 1986-10-15 1988-04-27 Stoll H Gmbh & Co Dust extraction in flat knitting machines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5363676A (en) * 1992-04-02 1994-11-15 Precision Fukuhara Works, Ltd. Dust sucking and discharging device for fiber wastes on knitting machine
US5408850A (en) * 1993-02-02 1995-04-25 Precision Fukuhara Works, Ltd. Fiber waste collector/remover and cooling apparatus for use with a circular knitting machine
EP0816546A2 (en) * 1996-07-03 1998-01-07 ALANDALE INDUSTRIES, Inc. Means for deterring lint and debris accumulation on the knitting elements of a circular knitting machine
EP0816546A3 (en) * 1996-07-03 1998-12-30 ALANDALE INDUSTRIES, Inc. Means for deterring lint and debris accumulation on the knitting elements of a circular knitting machine
AU723848B2 (en) * 1996-07-03 2000-09-07 Alandale Industries, Inc. Means for deterring lint and debris accumulation on the knitting elements of a circular knitting machine
CN1086753C (en) * 1996-07-03 2002-06-26 艾伦达尔工业有限公司 Means for deterring lint and debris accumulation on knitting elements of circular knitting machine

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Publication number Publication date
FR2669352B1 (en) 1993-03-05
FR2669352A1 (en) 1992-05-22

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