EP0114153A2 - Thread feeding device for stocking knitting machines for making a heel pocket in continuous motion - Google Patents

Thread feeding device for stocking knitting machines for making a heel pocket in continuous motion Download PDF

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Publication number
EP0114153A2
EP0114153A2 EP84830008A EP84830008A EP0114153A2 EP 0114153 A2 EP0114153 A2 EP 0114153A2 EP 84830008 A EP84830008 A EP 84830008A EP 84830008 A EP84830008 A EP 84830008A EP 0114153 A2 EP0114153 A2 EP 0114153A2
Authority
EP
European Patent Office
Prior art keywords
needles
plates
thread
heel
cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84830008A
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German (de)
French (fr)
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EP0114153A3 (en
EP0114153B1 (en
Inventor
Giuliano Ugolini
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.)
Fa - Ma SNC Di Frullini & Maselli
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Fa - Ma SNC Di Frullini & Maselli
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Filing date
Publication date
Application filed by Fa - Ma SNC Di Frullini & Maselli filed Critical Fa - Ma SNC Di Frullini & Maselli
Priority to AT84830008T priority Critical patent/ATE27010T1/en
Publication of EP0114153A2 publication Critical patent/EP0114153A2/en
Publication of EP0114153A3 publication Critical patent/EP0114153A3/en
Application granted granted Critical
Publication of EP0114153B1 publication Critical patent/EP0114153B1/en
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/42—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration
    • D04B9/46—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration stockings, or portions thereof
    • D04B9/56—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration stockings, or portions thereof heel or toe portions
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D04B15/34—Cam systems or assemblies for operating knitting instruments for dials

Definitions

  • the invention relates to a thread feeding mechanism for circular stocking machines and the like for forming a heel pocket with continuous movement.
  • the heel is formed with a continuous rotation of the needle cylinder and with an additional thread guide capable of coaxial movements relative to the cylinder; the said thread guide follows the needle cylinder, stops first before a stitch formation position to feed the needles with a needle arc passing in front of it, then at a speed higher than that of the cylinder, it passes over the needles of an arc of raised needles to deposit before them the thread which is knitted with a further lowering in a new corresponding position of formation of stitches and, finally, begins to again to follow the cylinder.
  • said machine has drawbacks for the fact that the thread supplied by the thread guide does not have a length corresponding to that necessary for the development of knitting stitches, so that, once knitted, they appear very tight because of the thread which is too tight.
  • the main point of this invention is to eliminate this drawback.
  • the invention solves the problem of feeding threading machines to the low and the like provided with a cylinder of needles in continuous rotation, without tension of the thread during the formation of a mesh pocket by accumulating a certain amount of thread in excess of that necessary for the development of the arc of fed needles.
  • the mechanism comprises an arc of additional plates, as well as a cam-forming structure of the said plate command which can be moved to cause the centripetal advancement of the plates and their subsequent retraction.
  • the additional plates are advantageously arranged above the crown of the traditional plates, which are then arranged with the control heels protruding at the bottom.
  • the cam structure is actuated relative to the crown of the cylinder of the plates, using two toothed coaxial sectors and a return pinion (idle) and with the intervention of rods which stop one and the other of said sectors, to determine the stop and the passage above the cam.
  • the advantages obtained thanks to this invention consist essentially in that the yarn used to knit the stitches of the mail rows of a heel pocket is tension free; the operation of the circular machine with cylinder in continuous rotation is more regular even by a long working time; the mechanism is applicable to used machines too.
  • FIG.1 shows a plan view of the means of action of the additional thread guide
  • FIG. 2 shows an overall vertical section of a mechanism according to the invention
  • FIG. 3 shows a plan view of a particular of said mechanism
  • FIGS. 4 and 5 show two operating diagrams
  • FIG. 6 shows an actuation system for the additional thread guide:
  • 51 indicates the needle cylinder 1c and 53 indicates the crown fixed to the cylinder 51 of autor needles of the upper edge thereof, to form the radial centers for the traditional plates 55.
  • the crown of the plates 53 is released to form the radial centers for the plates in the lower part lower, the plates 55 having their control heel 55A protruding at the bottom to cooperate with an underlying annular structure 57, corresponding to the so-called traditional plate guard.
  • This arrangement is necessary because it is planned to place at the top of the crown 53 a set of auxiliary plates 59 which are recovery plates for the predicted thread laid in a sector of the circumference of the needle cylinder, where the needles form the heel.
  • recovery plates 59 have the control heel 59A which protrudes at the top to cooperate with a cam structure 61 which also constitutes a guard portion for recovery plates 59, developed in an arc of a circle.
  • This structure 61 is placed so as to cause friction and to be able to pivot relative to the crown 53 of the plates 55 and to be moved alternately relative to the latter.
  • the structure 61 is integral with a toothed sector 63 with external teeth.
  • a second toothed sector 65 with internal toothing is provided in a center formed by the crown 53 of the plates 55 solid to the cylinder, 51 and also to rotate but friction with respect to the crown 53.
  • the sector 63 comprises a meeting pin 171, intended to cooperate with a rod 73 which can be moved to interfere with the pin 71 or disappear in front of it.
  • the sector 65 has a meeting pin 75, connected to a locking rod 77 which can be moved to interfere with pin 75 or disappear in front of it.
  • the locking pins 73 and 77 can be controlled A radially and / or angularly to achieve the two positions.
  • centripetal advancement of the plates 59 takes place gradually under the effect of the profile of the cam 61 which accelerates relative to the movement of the cylinder 51 of needles, and the centrifugal movement of the plates 59 also takes place gradually, but in the opposite direction, during the stopping of the structure 61 always under the effect of its profile which always and in any case acts on the heels 59A, in the first phase, starting from the heels of the rear plates 59 and, in the second phase, starting from the heels of the front plates 59 in the direction of rotation of the cylinder 51 of the needles.
  • centripetal movements of the additional plates 59 determine a return of the thread greater than that due to the movement of the thread guide 98, when the latter is commanded to advance rapidly beyond the cylinder 51 of needles; the plates59 moving forward impose on the thread F the path shown in FIG. 5 by recalling a length of thread greater than that corresponding to the development of the arc of the needle cylinder 51 relative to the last needle A which has taken and has knitted yarn.
  • a hollow shaft 97 which controls the rotation of the thread guide 98, the latter being able to move from an advanced position for loading the needles A to a position retracted in a centripetal manner of exclusion, to which corresponds a pneumatic suction retention sleeve 100 of the wire F.
  • An ad hoc mechanism is used to control the radial movements of the wire guide 98 at the start and at the end of the production of the heel.
  • the shaft 97 between which the wire F passes, is controlled by a pair of gears 99-101, the gear 101 being integral with a small pinion 103 which in turn meshes with a toothed wheel 105.
  • the latter is actuated by the unidirectional movement of a sawtooth wheel 107 cooperating with a jack 109 mounted with a pivot 110 on a small lever 112 coaxial with the assembly) 105, 107 which is conveniently braked by a band brake 114.
  • the small lever 112 is actuated by a wheelhouse 116-118 with contact roller 120 actuated by a cam 112, which is better illustrated in FIG. 10.
  • This cam 122 has a reset sector (A), in which the wire guide 98 is stopped, a sector (B) in which movement of the wire guide 98 takes place at a speed equal to that of the cylinder 51, a sector (C) in which a movement of the wire guide 98 is obtained at a speed of approximately triple that of the cylinder 51 and a sector (D) where the wire guide 98 has a movement of speed equal to that of the cylinder 51; these movements, obtained by the cam 61 with the roller 120, are multiplied through the transmission mechanism described above.
  • FIG. 4 and 5 shows the operation of the mechanism described.
  • the thread guide 98 remains stationary, until all the needles A in operation have formed the mesh in the position PB.
  • the thread guide 98 moves to point PC while all the needles A in operation are raised.
  • the wire guide 98 is advanced at a speed three times that of the cylinder 51 to the PE position, and then moves it to the PA position at a speed equal to that of the cylinder 51 and then stop there.
  • the position PD takes place the formation of the mesh with the thread F previously deposited on the needles A by the rapid movement of the thread guide 98. All these operations have place at each revolution of cylinder 51.
  • the needles A intended to work for the formation of the heel can be gradually excluded and included at the ends of the arc of needles in function, to obtain the traditional formation of the heel, always with the continuous rotation of the cylinder 51 of needles and with alternate rows.
  • FIG. 5 is shown the position of the wire guide 98 when the stitches are to be formed with the wire F deposited by the wire guide 98 which has passed the cylinder 51 with a triple speed.
  • 59x represents the plates which are still advanced centripetally
  • 59y the plates which are moving backwards
  • 59z the plates which are moved back centrifugally.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Socks And Pantyhose (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The guide system for a thread entering a stocking knitting machine having a cylindrical array of needles which rotates constantly and a supplementary thread guide which can skip over selected groups of needles to form the heel of the stocking is complemented by a supplementary concentric array of guide plates backed by an annular cam above the level of the plates alongside the tops of the needles but below the level of the cap through which the filament enters coaxially. The cam is shaped to induce a centripetal movement of the plates to be followed by a centrifugal recoil at appropriate intervals controlled by interruption of the motions of a pair of concentric toothed racks having an intermediate pinion and pins which can be intercepted by deployment of radial check rods. Slows the main array of needles to rotate continuously while causing the amount of thread deployed to be varied to suit the shape of a heel or other modification of the stacking profile so that the circumferential threads do not exhibit excessive residual tension.

Description

L'invention concerne un mécanisme pour l'alimentation de fil pour machines circulaires à tricoter les bas et similaires pour la formation d'une poche à talon avec mouvement continu.The invention relates to a thread feeding mechanism for circular stocking machines and the like for forming a heel pocket with continuous movement.

On conna∧it une machine circulaire avec le cylindre d'aiguilles en rotation continue dans le m'eme sens et un guide-fil supplémentaire qui cycliquement surpasse les aiguilles d'un arc d'aiguilles destinées à former le talon en déposant le fil devant les aiguilles soulevées.We know a circular machine with the needle cylinder in continuous rotation in the same direction and an additional thread guide which cyclically surpasses the needles of an arc of needles intended to form the heel by depositing the thread in front needles raised.

Dans cette machine circulaire à bas connue le talon est formé avec une rotation continue du cylindre des aiguilles et avec un guide-fil supplémentaire capable de mouvements coaxiaux par rapport au cylindre; le dit guide-fil suit le cylindre des aiguilles, s'arr∧ete d'abord avant une position de formation de mailles pour alimenter de fil les aiguilles d'un arc d'aiguilles qui passant devant celui-ci, puis à une vitesse supérieure à celle du cylindre, il passe au-dessus des aiguilles d'un arc d'aiguilles soulevées pour déposer devant elles le fil qui est tricoté avec un ultérieur abaissement dans une nouvelle correspondant position de formation des mailles et, enfin, se met de nouveau à suivre le cylindre.In this known low circular machine the heel is formed with a continuous rotation of the needle cylinder and with an additional thread guide capable of coaxial movements relative to the cylinder; the said thread guide follows the needle cylinder, stops first before a stitch formation position to feed the needles with a needle arc passing in front of it, then at a speed higher than that of the cylinder, it passes over the needles of an arc of raised needles to deposit before them the thread which is knitted with a further lowering in a new corresponding position of formation of stitches and, finally, begins to again to follow the cylinder.

D'autre part la dite machine présente des inconvénients pour le fait que le fil fourni par le guide-fil n'a pas une longuer correspondante à celui nécessaire au développement des mailles à tricoter, de manière qu'elles, une fois tricotées, paraissent très serées à cause du fil qui est trop tendu.On the other hand, said machine has drawbacks for the fact that the thread supplied by the thread guide does not have a length corresponding to that necessary for the development of knitting stitches, so that, once knitted, they appear very tight because of the thread which is too tight.

Le bout principal de cette invention est d'éliminer cet inconvénient.The main point of this invention is to eliminate this drawback.

L'invention, telle qu'elle est caractérisée dans les revendications, résout le problème consistant à alimenter de fil les machines à bas et similaires pouvues d'un cylindre des aiguilles en rotation continue, sans tension du fil lors de la formation d'une poche de mailles en accemulant une certaine quantité de fil excédent celui nécessaire au développement de l'arc d'aiguilles alimentées.The invention, as characterized in the claims, solves the problem of feeding threading machines to the low and the like provided with a cylinder of needles in continuous rotation, without tension of the thread during the formation of a mesh pocket by accumulating a certain amount of thread in excess of that necessary for the development of the arc of fed needles.

Dans une de ses possibles réalisations, le mécanisme comprend un arc de platines supplémentaires, ainsi qu'une structure formant came du comand desdite platines qui peut -etre déplacée pour provoquer l'avancement centripète des platines et leur reculement consécutif. Les platines supplémentaires sont avantageusement disposées au-dessus de la couronne des platines traditionnelles, lesquelles sont alors disposées avec les talons de commande faisant saillie dans le bas. La structure formant came est actionnée par rapport à la couronne du cylindre des platines, à l'aide de deux secteurs coaxiaux dentés et d'un pignon de renvoi (oisif) et avec l'intervention de tiges qui arr∧etent l'un et l'autre desdits secteurs, pour déterminer l'arret et le passage au-dessus de la camme.In one of its possible embodiments, the mechanism comprises an arc of additional plates, as well as a cam-forming structure of the said plate command which can be moved to cause the centripetal advancement of the plates and their subsequent retraction. The additional plates are advantageously arranged above the crown of the traditional plates, which are then arranged with the control heels protruding at the bottom. The cam structure is actuated relative to the crown of the cylinder of the plates, using two toothed coaxial sectors and a return pinion (idle) and with the intervention of rods which stop one and the other of said sectors, to determine the stop and the passage above the cam.

Les avantages obtenus gr∧ace a cette invention consistent essentiellement en ceci que le fil utilisé pour tricoter les mailles des rangs de mail les d'une poche de talon est exempt de tension; le fonctionnement de la machine circulaire avec cylindre en rotation continue est plus régulier m eme par un longue temps de travail; le mécanisme est applicable aux machines usagées aussi.The advantages obtained thanks to this invention consist essentially in that the yarn used to knit the stitches of the mail rows of a heel pocket is tension free; the operation of the circular machine with cylinder in continuous rotation is more regular even by a long working time; the mechanism is applicable to used machines too.

Dans ce qui suit, l'invention est exposée plus en détail à l'aide de dessins représentant seulement un mode d'exécution.In the following, the invention is explained in more detail using drawings representing only one embodiment.

La FIG.1 montre une vue en plan des moyens d'action nement du guide-fil supplementaire; la FIG. 2 represénte une coupe verticale d'ensemble d'un mécanisme selon l'invention; la FIG. 3 représente une vue en plan d'un particulier du dit mécanisme; les FIG. 4 et 5 montrent deux schémas de fonctionnement; la FIG. 6 représente un système d'actionnement du guide-fil supplementaire:FIG.1 shows a plan view of the means of action of the additional thread guide; FIG. 2 shows an overall vertical section of a mechanism according to the invention; FIG. 3 shows a plan view of a particular of said mechanism; FIGS. 4 and 5 show two operating diagrams; FIG. 6 shows an actuation system for the additional thread guide:

Dans les FIG.1 à 3, 51 indique le cylindre d'aiguil les et 53 indique la couronne fixée au cilindre 51 d'aiguilles autor du bord supérieur de celui-ci, pour former les centres radiaux pour les platines 55 traditionnelles. Selon la FIG. 2, la couronne des platines 53 est dégagée pour former les centres radiaux pour les platines dans la partie inférieure, les platines 55 présentant leur talon 55A de commande faisant saillie dans le bas pour coopérer avec une structure annulaire 57 sous-jacente, correspondant a la soi-disant gardeplatines traditionnelle. Cette disposition est nécessaire parce qu'il est prévu de placer dans le haut de la couronne 53 un ensemble de platines auxiliaires 59 qui sont des platines de récupération du fil prédis posé dans un secteur de la circonférence du cylindre d'aiguilles, où les aiguilles forment le talon. Ces platines de récupération 59 ont le talon de commande 59A qui forme saillie dans le haut pour coopérer avec une structure à came 61 qui constitue en outre, une partie de garde pour platines 59 de récupération, développée en arc de cercle. Cette structure 61 est mise de manière à faire friction et à pouvoir pivoter par rapport à la couronne 53 des platines 55 et à ∧etre déplacée alternativement par rapport à celle-ci. La structure 61 est solidaire d'un secteur denté 63 à denture externe. Un second secteur denté 65 à denture interne, est prévu dans un centre formé par la couronne 53 des platines 55 solidiaire au cylindre,51 et également à m'eme de pivoter mais en faisant friction par rapport à la couronne 53. Sur la couronne 53 des platines est monté libre un pignon denté 67, qui est à m∧eme de pivoter spontanément et qui s'engrène contemporainement avec les deux secteurs 63 et 65. Le secteur 63 comporte un tourillon de rencontre 171, destiné à coopérer avec une tige 73 de blocage qui peut ∧etre déplacée pour interférer avec le tourillon 71 ou s'effacer devant lui. De m∧eme, le secteur 65 présente un tourillon 75 de rencontre, relié à une tige 77 de blocage qui peut ∧etre déplacée pour interférer avec le tourillon 75 ou s'effacer devant lui. Les tiges de blocage 73 et 77 peuvent Aetre commandées de manière radiale et/ou angulaire pour atteindre les deux positions.In FIGS. 1 to 3, 51 indicates the needle cylinder 1c and 53 indicates the crown fixed to the cylinder 51 of autor needles of the upper edge thereof, to form the radial centers for the traditional plates 55. According to FIG. 2, the crown of the plates 53 is released to form the radial centers for the plates in the lower part lower, the plates 55 having their control heel 55A protruding at the bottom to cooperate with an underlying annular structure 57, corresponding to the so-called traditional plate guard. This arrangement is necessary because it is planned to place at the top of the crown 53 a set of auxiliary plates 59 which are recovery plates for the predicted thread laid in a sector of the circumference of the needle cylinder, where the needles form the heel. These recovery plates 59 have the control heel 59A which protrudes at the top to cooperate with a cam structure 61 which also constitutes a guard portion for recovery plates 59, developed in an arc of a circle. This structure 61 is placed so as to cause friction and to be able to pivot relative to the crown 53 of the plates 55 and to be moved alternately relative to the latter. The structure 61 is integral with a toothed sector 63 with external teeth. A second toothed sector 65 with internal toothing is provided in a center formed by the crown 53 of the plates 55 solid to the cylinder, 51 and also to rotate but friction with respect to the crown 53. On the crown 53 of the plates there is freely mounted a toothed pinion 67, which is able to pivot spontaneously and which engages contemporaneously with the two sectors 63 and 65. The sector 63 comprises a meeting pin 171, intended to cooperate with a rod 73 which can be moved to interfere with the pin 71 or disappear in front of it. Likewise, the sector 65 has a meeting pin 75, connected to a locking rod 77 which can be moved to interfere with pin 75 or disappear in front of it. The locking pins 73 and 77 can be controlled A radially and / or angularly to achieve the two positions.

Afin qu'aucun des deux tourillons 73 e 77 n'interfè re avec les respectives tiges 71 et 75, les deux secteurs 63 et 65 pivotent transportés par la couronne 53 avec laquelle ils font friction. Quand le tourillon 77 fait saillie pour interférer aver la tige 75, celle-ci arr∧ete le secteur 65; à ce mo ment le pignon denté 67, poursuivant sont propre mouvement avec la couronne 53, commence un roulement le long de la denture du secteur 65 et ainsi provoque l'avancement du secteur 63 avec une vitesse angulaire pour celui-ci qui atteint presque le double de la vitesse angulaire du cylindre 51 d'aiguilles; ainsi, le profil de la came 61 agit sur les platines 59 en déterminant le déplacement radial centripète de ces platines 59. Le reculement du tourillon 77 interrompt le mouvement relatif entre, d'une part la couronne 53, le secteur 65 et le secteur 63 et, d'autre part la camme 61, et les platines 59 tendent à rester en saillie. Lorsque le tourillon 73 intervient avec sa propre saillie centripète sur la tige de blocage 71, le secteur 63 est arr∧eté, puis la came 61, tandis que la couronne 53, continue à tourner;il en résulte qu'à ce point, les platines 59 passent au-dessus de la came 61, qui est arrAetée, et se reportent, avec un mouvement centrifuge, vers l'estérieur; on obtient également, par la rotation inverse du pignon 67, un avancement rapide du secteur 65. Au moment où cesse l'action de retenue du tourillon 73 contre la tige 71, se rétablit le positionnement réciproque des secteurs 65 et 63 par rapport à la couronne.53, comme le montre la FIG. 3, et les pièces 53, 65, 63 recommencent à tourner avec le cylindre 51 d!aiguilles. Il faut noter que l'avancement centripète des platines 59 a lieu progressivement sous l'effet du profil de la came 61 qui accélère par rapport au mouvement du cylindre 51 d'aiguilles, et le mouvement centrifuge des platines 59 a également lieu progressivement, mais en sens inverse, durant l'arr∧et de la structure 61 toujours sous l'effet de son profil lequel agit toujours et de toute manière sur les talons 59A, dans la première phase, en partant des talons des platines 59 postérieures et, dans la second phase, en partant des talons des platines 59 antérieures dans le sens de rotation du cylindre 51 des aiguilles.So that none of the two journals 73 e 77 interfere with the respective rods 71 and 75, the two sectors 63 and 65 pivot transported by the crown 53 with which they make friction. When the pin 77 protrudes to interfere with the rod 75, the latter stops the sector 65; at this time the toothed pinion 67, continuing its own movement with the crown 53, begins a rolling along the toothing of the sector 65 and thus causes the advancement of the sector 63 with an angular speed for the latter which almost reaches the double the angular speed of the cylinder 51 of needles; thus, the profile of the cam 61 acts on the plates 59 by determining the centripetal radial displacement of these plates 59. The retraction of the pin 77 interrupts the relative movement between, on the one hand the crown 53, the sector 65 and the sector 63 and, on the other hand the cam 61, and the plates 59 tend to remain projecting. When the pin 73 intervenes with its own centripetal projection on the locking rod 71, the sector 63 is stopped, then the cam 61, while the crown 53, continues to rotate; it follows that at this point, the plates 59 pass over the cam 61, which is stopped at summer, and move, with a centrifugal movement, towards the interior; we also get, by the reverse rotation of the pinion 67, rapid advancement of the sector 65. When the action of retaining the pin 73 against the rod 71 ceases, the reciprocal positioning of the sectors 65 and 63 with respect to the crown is restored. as shown in FIG. 3, and the parts 53, 65, 63 start again to rotate with the cylinder 51 d ! needles. It should be noted that the centripetal advancement of the plates 59 takes place gradually under the effect of the profile of the cam 61 which accelerates relative to the movement of the cylinder 51 of needles, and the centrifugal movement of the plates 59 also takes place gradually, but in the opposite direction, during the stopping of the structure 61 always under the effect of its profile which always and in any case acts on the heels 59A, in the first phase, starting from the heels of the rear plates 59 and, in the second phase, starting from the heels of the front plates 59 in the direction of rotation of the cylinder 51 of the needles.

Ces mouvements centripètes des platines supplémentaires 59 déterminent un rappel du fil supérieur à celui d∧u au mouvement du guide-fil 98, quand celui-ci est commandé pour avancer rapidement au-delà du cylindre 51 d'aiguilles; les platines59 en avançant imposent au fil F le parcours montré dans la FIG.5 en rappelant une longueur de fil supérieure à celle correspondant au développement de l'arc du cylindre d'aiguilles 51 par rapport à la dernière aiguille A qui a pris et a tricoté le fil.These centripetal movements of the additional plates 59 determine a return of the thread greater than that due to the movement of the thread guide 98, when the latter is commanded to advance rapidly beyond the cylinder 51 of needles; the plates59 moving forward impose on the thread F the path shown in FIG. 5 by recalling a length of thread greater than that corresponding to the development of the arc of the needle cylinder 51 relative to the last needle A which has taken and has knitted yarn.

Quand les platines 59 glissent par rapport au secteur 63 dans le sens de la rotation du cylindre 51 d'aiguilles, les platines 59 reculent en sens centrifuge et cèdent donc le fil, permettant à celui-ci de former les mailles suivantes avec l'abaissement des aiguilles, sans tension du fil. Avec le dispositif décrit ci-dessus coopère un système de commande du guide-fil 98 pour permettre l'accélération de celui-ci per rapport au cylindre 51 d'aiguilles, son mouvement à vitesse égale à cel le du cylindre 51 des aiguilles et son arret. Pour obtenir ceci, il est prévu une disposition comme le montrent les FIG. 1 et 2, en combinaison avec la structure 91 qui supporte le plateau 92 pivotant dé manière coaxiale sur le cylindre 51 des aiguilles lequel plateau 92 est commandé par le couple d'engrenages coniques 93. A l'intérieur de l'arbre du plateau 92 est prévu un arbre 97 creux qui commande la rotation du guide-fil 98, ce dernier étant à même de se déplacer d'une position avancée de chargement des aiguilles A jusqu'a une position reculée de manière centripète d'exclusion, à laquelle correpond une douille 100 de rétention à aspiration pneumatique du fil F. Un mécanisme ad hoc sert à commander les mouvements radiaux du guide-fil 98 au début et à la fin de la réalisation du talon. L'arbre 97 entre lequel passe le fil F, est commandé par un couple d'engrenages 99-101, l'engrenage 101 étant solidaire à un petit pignon 103 qui à son tour s'engrène dans une roue dentée 105. Cette dernière est actionnée par le mouvement unidirectionelle d'une roue en dents de scie 107 coopérant avec un cric 109 monté avec un pivot 110 sur un petit levier 112 coaxial à l'enseml)le 105, 107 qui est opportunément freiné par un frein à ruban 114. Le petit levier 112 est actionné par une timonerie 116-118 avec rouleau de contact 120 actionné par une came 112, qui est mieux illustrée dans la FIG. 10. Cette came 122 présente un secteur (A) de réarmement, dans lequel le guide-fil 98 est arreté, un secteur- (B) dans lequel a lieu un mouvement du guide-fil 98 à vitesse égale à celle du cylindre 51, un secteur (C) dans lequel on obtient un mouvement du guid-fil 98 à una vitesse d'environ le triple de celle du cylindre 51 et un secteur (D) où le guide-fil 98 a un mouvement de vitesse égale à celle du cylindre 51; ces mouvements, obtenus par la came 61 avec le rouleau 120, sont multipliés à travers le mécanisme de transmission déscrit ci-dessus.When the plates 59 slide relative to the sector 63 in the direction of rotation of the cylinder 51 of needles, the plates 59 recede in a centrifugal direction and therefore yield the thread, allowing the latter to form the following stitches with the lowering of the needles, without tension of the thread. With the device described above cooperates a control system of the thread guide 98 to allow the acceleration thereof relative to the cylinder 51 of needles, its movement at speed equal to that of the cylinder 51 of the needles and its stop. To obtain this, provision is made as shown in FIGS. 1 and 2, in combination with the structure 91 which supports the plate 92 pivoting coaxially on the cylinder 51 of the needles which plate 92 is controlled by the pair of bevel gears 93. Inside the shaft of the plate 92 a hollow shaft 97 is provided which controls the rotation of the thread guide 98, the latter being able to move from an advanced position for loading the needles A to a position retracted in a centripetal manner of exclusion, to which corresponds a pneumatic suction retention sleeve 100 of the wire F. An ad hoc mechanism is used to control the radial movements of the wire guide 98 at the start and at the end of the production of the heel. The shaft 97 between which the wire F passes, is controlled by a pair of gears 99-101, the gear 101 being integral with a small pinion 103 which in turn meshes with a toothed wheel 105. The latter is actuated by the unidirectional movement of a sawtooth wheel 107 cooperating with a jack 109 mounted with a pivot 110 on a small lever 112 coaxial with the assembly) 105, 107 which is conveniently braked by a band brake 114. The small lever 112 is actuated by a wheelhouse 116-118 with contact roller 120 actuated by a cam 112, which is better illustrated in FIG. 10. This cam 122 has a reset sector (A), in which the wire guide 98 is stopped, a sector (B) in which movement of the wire guide 98 takes place at a speed equal to that of the cylinder 51, a sector (C) in which a movement of the wire guide 98 is obtained at a speed of approximately triple that of the cylinder 51 and a sector (D) where the wire guide 98 has a movement of speed equal to that of the cylinder 51; these movements, obtained by the cam 61 with the roller 120, are multiplied through the transmission mechanism described above.

Dans le FIG. 4 et 5 est répresenté le fonctionnement du mécanisme décrit. Dans la FIG. 4 avec PA est indiquée la position dans laquelle le guide-fil 98 reste immobile, jusqu'à ce que toutes les aiguil les A en fonctionnement aient formé la maille dans la position PB. Du point PA, le guide-fil 98 se déplace jusqu'au point PC pendant que toutes les aiuguilles A en fonctionnement sons soulevées. De la position PC on fait avancer le guide-fil 98 à una vitesse triple de celle du cylindre 51 jusqu'à la position PE, pour ensuite le déplacerjusqu'à la position PA à une vitesse égale a celle du cylindre 51 et ensuyte l'y arreter. Dans la position PD a lieu la formation de la maille avec le fil F déposé antérieurement sur les aiguilles A par le mouvement rapide du guide-fil 98. Toutes ces opérations ont lieu à chaque tour du cylindre 51.In FIG. 4 and 5 shows the operation of the mechanism described. In FIG. 4 with PA is indicated the position in which the thread guide 98 remains stationary, until all the needles A in operation have formed the mesh in the position PB. From point PA, the thread guide 98 moves to point PC while all the needles A in operation are raised. From the PC position, the wire guide 98 is advanced at a speed three times that of the cylinder 51 to the PE position, and then moves it to the PA position at a speed equal to that of the cylinder 51 and then stop there. In the position PD takes place the formation of the mesh with the thread F previously deposited on the needles A by the rapid movement of the thread guide 98. All these operations have place at each revolution of cylinder 51.

Les aiguilles A destinées à travailler pour la formation du talon peuvent être progressivement exclues et incluses aux extrémités de l'arc d'aiguilles en fonction, pour obtenir la formation traditionnelle du talon, toujours avec la rotation continue du cylindre 51 d'aiguilles et avec des rangs alternés.The needles A intended to work for the formation of the heel can be gradually excluded and included at the ends of the arc of needles in function, to obtain the traditional formation of the heel, always with the continuous rotation of the cylinder 51 of needles and with alternate rows.

Dans la FIG.5 est répresentée la position du guide-fil 98 quand les mailles doivent être formées avec le fil F déposé par le guide-fil 98 qui a dépassé le cylindre 51 avec une vitesse triple. Dans ladite FIG. 5 sont'répresentées les aiguilles A soulevées dans l'arc destiné à former le talon à partir de l'aiguille Ax; à partir de cette aiguille, le fil est déposé sur les aiguilles A avec le mouvement d'avancement du guide-fil 98; en même temps entre en action de la manière déjà expliquée le secteur 63, la came 61 et les platines 59 sont ainsi déplacées de manière centripète. Durant l'avancement du cylindre 51 suite au mouvement de dépassement de la came 61, et quand celle-ci s'est arrétée, les platines 59 sont déplacées progressivement en direction centrifuge, c'est-à-dire qu'elles son reculées pour fournir du fil F en suffisance pour la formation des mailles dans la position de formation de mailles. Dans la FIG. 5, 59x représente les platines encore avancées de manière centripète, 59y les platines qui sont en train de reculer et 59z les platines reculées de manière centrifuge.In FIG. 5 is shown the position of the wire guide 98 when the stitches are to be formed with the wire F deposited by the wire guide 98 which has passed the cylinder 51 with a triple speed. In said FIG. 5 are represented the needles A raised in the arch intended to form the heel from the needle Ax; from this needle, the thread is deposited on the needles A with the advancing movement of the thread guide 98; at the same time comes into action in the manner already explained the sector 63, the cam 61 and the plates 59 are thus moved centripetally. During the advancement of the cylinder 51 following the passing movement of the cam 61, and when the latter has stopped, the plates 59 are progressively moved in the centrifugal direction, that is to say that they are moved back to provide sufficient F wire for mesh formation in the mesh formation position. In FIG. 5, 59x represents the plates which are still advanced centripetally, 59y the plates which are moving backwards and 59z the plates which are moved back centrifugally.

Claims (4)

1) Un mécanisme pour machines à bas et similaires pour l'alimentation de fil pour la formation d'un talon avec un cylindre 51 d'aiguilles en rotation continue dans le même sens et un guide-fil 98 supplémentaire qui passe cycliquement sur les aiguilles A d'un arc d'aiguilles pour former le talon et dépose le fil F devant les aiguilles soulevées qui forment avec celui-ci les rangs de mailles du talon, caractérisé par le fait qu'il comprend plusieurs platines 59 supplémentaires développées en arc de cercle concentrique au cylindre 51 des aiguilles, une structure à came 61 de commande desdites platines 59 pour provoquer l'avancement centripète des platines 59 et ensuite leur reculement, et un guide-fil 98 supplementaire disposé au dessous du plateau 92.1) A mechanism for stocking machines and the like for feeding thread for the formation of a heel with a cylinder 51 of needles in continuous rotation in the same direction and an additional thread guide 98 which passes cyclically over the needles Has an arc of needles to form the heel and deposits the thread F in front of the raised needles which form therewith the rows of stitches of the heel, characterized in that it comprises several additional plates 59 developed in an arc of circle concentric with the cylinder 51 of the needles, a cam structure 61 for controlling said plates 59 to cause the centripetal advancement of the plates 59 and then their retraction, and an additional thread guide 98 disposed below the plate 92. 2) Mécanisme selon la revendication 1) caractérisé par le fait que les dites platines 59 supplémentaires sont disposées au-dessus de la couronne 53 des platines 55 traditionnelles dont les talons de commande dépassent vers le bas.2) Mechanism according to claim 1) characterized in that said additional plates 59 are arranged above the crown 53 of traditional plates 55 whose control heels protrude downward. 3) Mécanisme selon la revendication 1) caractérisé par le fait que ladite structure came 61 est actionnée par rapport à la couronne 53 du cylindre des platines 55, à l'aide de deux secteurs dentés 63 - 65 coaxiaux, avec les tourillons 71 75 et d'un pignon 67 de renvoi, et avec l'intervention des tiges 73 - 77 qui arrêtent l'un 63 et l'autre 65 desdits secteurs 63 - 65, pour determiner l'arrét et le chevauchement de la came 61.3) Mechanism according to claim 1) characterized in that said cam structure 61 is actuated relative to the crown 53 of the cylinder of the plates 55, using two toothed sectors 63 - 65 coaxial, with the pins 71 75 and a return pinion 67, and with the intervention of rods 73 - 77 which stop one 63 and the other 65 of said sectors 63 - 65, to determine the stop and the overlap of the cam 61. 4) Mécanisme selon la revendication 1) caractérisé par le fait que le dit guide-fil 98 est creux et est alimenté de fil F à travers du creux de l'arbre 97 qui commande la rotation du dit guide-fil.4) Mechanism according to claim 1) characterized in that said wire guide 98 is hollow and is supplied with wire F through the hollow of the shaft 97 which controls the rotation of said wire guide.
EP84830008A 1983-01-14 1984-01-12 Thread feeding device for stocking knitting machines for making a heel pocket in continuous motion Expired EP0114153B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84830008T ATE27010T1 (en) 1983-01-14 1984-01-12 THREAD FEED DEVICE FOR HOSE-KNITTING MACHINES FOR FORMING A HEEL POUCH IN CONTINUOUS MOTION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT930983 1983-01-14
IT09309/83A IT1198504B (en) 1983-01-14 1983-01-14 CONVENTION FOR THE FEEDING OF YARN AND MACHINES FOR SOCKS AND SIMILAR FOR THE FORMATION OF A HEEL BAG WITH CONTINUOUS MOTION

Publications (3)

Publication Number Publication Date
EP0114153A2 true EP0114153A2 (en) 1984-07-25
EP0114153A3 EP0114153A3 (en) 1984-08-29
EP0114153B1 EP0114153B1 (en) 1987-05-06

Family

ID=11128219

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Application Number Title Priority Date Filing Date
EP84830008A Expired EP0114153B1 (en) 1983-01-14 1984-01-12 Thread feeding device for stocking knitting machines for making a heel pocket in continuous motion

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EP (1) EP0114153B1 (en)
JP (1) JPS6045651A (en)
AT (1) ATE27010T1 (en)
DE (1) DE3463532D1 (en)
IT (1) IT1198504B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE657812A (en) * 1964-01-03 1965-04-16
US3256716A (en) * 1961-03-10 1966-06-21 Schubert & Salzer Maschinen Circular knitting machine
DE1635881A1 (en) * 1967-04-12 1971-04-08 Hammer Geb Nebel Sigrid Method and circular knitting machine for producing a stocking
US3668902A (en) * 1968-04-30 1972-06-13 Charles J Sanders Cylinder, sinkers, needle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256716A (en) * 1961-03-10 1966-06-21 Schubert & Salzer Maschinen Circular knitting machine
BE657812A (en) * 1964-01-03 1965-04-16
DE1635881A1 (en) * 1967-04-12 1971-04-08 Hammer Geb Nebel Sigrid Method and circular knitting machine for producing a stocking
US3668902A (en) * 1968-04-30 1972-06-13 Charles J Sanders Cylinder, sinkers, needle

Also Published As

Publication number Publication date
EP0114153A3 (en) 1984-08-29
ATE27010T1 (en) 1987-05-15
JPS6045651A (en) 1985-03-12
EP0114153B1 (en) 1987-05-06
IT8309309A0 (en) 1983-01-14
IT1198504B (en) 1988-12-21
JPH0577776B2 (en) 1993-10-27
DE3463532D1 (en) 1987-06-11

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