EP0654554B1 - Method and apparatus for the automatic loading of a machine for sewing gussets on knitted garments of the "pantyhose" type - Google Patents

Method and apparatus for the automatic loading of a machine for sewing gussets on knitted garments of the "pantyhose" type Download PDF

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Publication number
EP0654554B1
EP0654554B1 EP93830459A EP93830459A EP0654554B1 EP 0654554 B1 EP0654554 B1 EP 0654554B1 EP 93830459 A EP93830459 A EP 93830459A EP 93830459 A EP93830459 A EP 93830459A EP 0654554 B1 EP0654554 B1 EP 0654554B1
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EP
European Patent Office
Prior art keywords
head
garment
machine
support
suction
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.)
Expired - Lifetime
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EP93830459A
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German (de)
French (fr)
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EP0654554A1 (en
Inventor
Pier Lorenzo Migliorini
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Solis SRL
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Solis SRL
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Publication date
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Priority to EP93830459A priority Critical patent/EP0654554B1/en
Priority to DE69303716T priority patent/DE69303716D1/en
Priority to CA002109991A priority patent/CA2109991A1/en
Priority to US08/161,879 priority patent/US5460108A/en
Priority to JP5348654A priority patent/JPH07216602A/en
Publication of EP0654554A1 publication Critical patent/EP0654554A1/en
Application granted granted Critical
Publication of EP0654554B1 publication Critical patent/EP0654554B1/en
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B23/00—Sewing apparatus or machines not otherwise provided for
    • D05B23/007—Sewing units for assembling parts of knitted panties or closing the stocking toe part
    • D05B23/008—Line closers, i.e. sewing units for forming the body portion of the panty hose

Definitions

  • the present invention relates to a method and a device for the automatic loading of a gusset sewing machine on knitted garments of the "tights" type.
  • the main object of the present invention is to eliminate the drawbacks mentioned above.
  • the advantages obtained by virtue of the present invention essentially consist in the fact that it is possible to feed a bellows sewing machine without the formation of loose parts in the perineal area of the pantyhose on which the bellows is sewn, even if the fabric is very delicate; in that said feeding is automatic and includes easy assistance from operators; in that it is possible to apply said bellows even to tights in net knitting, since the gripping of the tights in correspondence of the perineal area is carried out by means of an annular forceps, capable of distributing the mechanical stress corresponding on a portion circular, continuous, of the tissue, that is to say without concentrating the load of the effort on a discrete number of portions of tissue of small area.
  • FIG. 1A shows a view in longitudinal section of a support head for the body of the pantyhose in the rest position, in a device according to the invention
  • Fig. 1B shows the longitudinal section view of the head of FIG. 1A in the execution position of the perineal hole on the respective tights
  • Fig. 1C shows the longitudinal section view of the head of FIG. 1A in the position of transfer of the respective tights to the corresponding head of the bellows sewing machine;
  • Fig. 1A shows a view in longitudinal section of a support head for the body of the pantyhose in the rest position, in a device according to the invention
  • Fig. 1B shows the longitudinal section view of the head of FIG. 1A in the execution position of the perineal hole on the respective tights
  • Fig. 1C shows the longitudinal section view of the head of FIG. 1A in the position of transfer of the respective tights to the corresponding head of the bellows sewing machine
  • Fig. 1A shows a view in longitudinal section of a support head for
  • FIG. 1D shows the plan view of the head of FIG. 1 C
  • Fig. 1E shows the side view of the head of FIG. 1A
  • Fig. 1F shows the side view of the head of FIG. 1B
  • Fig. 2A shows a view in longitudinal section of the means for gripping the tights in the rest position
  • Fig. 2B represents the view in longitudinal section of the means of FIG. 2A in the pantyhose loading position
  • Fig. 2C shows the longitudinal section view of the means of FIG. 2A in the trimming position of the perineal hole in the pantyhose
  • Fig. 2D represents the view in longitudinal section of the means of FIG. 2A in the position of application of the bellows
  • Fig. 2E represents the view in longitudinal section of the means of FIG. 2A in the pantyhose unloading position
  • Fig. 3A shows a view in longitudinal section of the means of FIG. 2A in combination with the waste cutting and disposal means
  • Fig. 3B shows the plan view of the means of
  • the gripping zone of said clamp (31) is constituted by a circular crown provided with several longitudinal notches.
  • the side wall of said head (100) is provided with several through holes (4) to allow communication of the chamber (1) with the suction manifold (2), so that the fabric the adhesive completely adheres to it during the loading operation of the bellows sewing machine.
  • Said collar (110) thus guarantees the correct positioning of the pantyhose during the execution of the perineal hole, even in the case where the tissue is very "heavy", that is to say of high density, and allows , moreover, to avoid the sliding of the tights on the side walls of the head (100) in case said hole is of small diameter.
  • said carriage (111) is provided with elastic means (112) for opposing lifting and with a lower stop element (113) with a corresponding operating cylinder (114) to prevent its lowering below a level. predetermined.
  • the mouth (39) of said tube (38) is profiled in the form of a nozzle to allow good suction of said waste.
  • said annular electrical resistance (9) is fixed to the upper ends of two parallel bars (12) which slide on an insulated guide (13) parallel to the axis (a) of the head (100), under the control of a corresponding pneumatic cylinder (14). It goes without saying that said resistor (9) is supplied by an appropriate electrical source, by means of two terminals (15).
  • said carriage (111) is supported by the head (100) itself.
  • said head displacement means (100) can comprise several other operating cylinders, not shown for simplification, to allow the uniform distribution of the work load and allow its correct positioning in the positions of threading the tights and lifting body to execute the perineal hole and to feed the gaiter sewing machine.
  • the heads (27) of the machine, the counter cones (25) and the elastic clamps (31) are equipped with several pins (200) protruding radially from these (27), which pins (200) are slidably housed in corresponding grooves parallel to the axis of the corresponding heads (27), to facilitate removal of the waste (300) generated during of the trimming of the hole of the pantyhose: the said pins (200) being arranged above the respective pliers (31) in the position of transfer of the pantyhose from the head (100) to the corresponding head (27) and below the pliers ( 31) and counter cones (25) in the positions which correspond to the application of the bellows and the unloading of the tights.
  • the pins (200) push the excess fabric (300) towards the resistance (40) which makes it possible to cut it before it is not sucked by the tube (38).
  • the operation of the device is as follows. Once the rotation of the bellows sewing machine has started, the clamp (31) of the head (27) in the pantyhose loading station is disposed in the open condition. Then, the tubular head (100) is positioned in the lowered inclined position to allow the operator to center the tights to be treated thereon. At the end of this operation, the head (100) is placed in a vertical position and the suction is activated in the chamber (1). Successively, the uprising of the head (100) is controlled until it comes into contact with the collar (110) which prevents the pantyhose from sliding and the lifting of the annular resistance (9) is controlled to execute the perineal hole in the pantyhose.
  • the tissue thus removed is sucked through the conduit (8) and the head (100) is subsequently lifted until it is with its upper part above the counter-cone (25).
  • the clamp (31) is lowered and closed to capture the sticky, the suction in the chamber (1) is interrupted and the head (100) with the collar (110) are returned to their respective initial position to allow the setting in place of a new pantyhose.
  • the head (100) is again in the lowered position.
  • suction begins in the head (27) to retain the body of the pantyhose before the legs, which are held by the operator and by suitable pneumatic means.
  • the head (100) is inclined downwards to allow the fitting of a new sticker.
  • the respective counter-cone (25) is lifted with the corresponding sticky so that it is placed at the level ok for trimming.
  • the pins (200) are located below the clamp (31) and the counter-cone (25).
  • the counter cone (25) is subsequently raised to allow the sewing means to perform their operation.
  • the annular portion of tissue (300) removed during the trimming of the perineal hole is located outside the corresponding head (27) and kept in tension by the pins (200), so that the approximation of the resistor (40) causes it to be cut and, when the clamp (31) is opened, its suction through the mouth (39).

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Socks And Pantyhose (AREA)

Description

La présente invention a pour objet un procédé et un dispositif pour le chargement automatique d'une machine à coudre les soufflets sur des vêtements en tricot de type "collants".The present invention relates to a method and a device for the automatic loading of a gusset sewing machine on knitted garments of the "tights" type.

On connaît, d'après le brevet espagnol Nr. 504417, un dispositif automatique qui prélève le collant sur une machine qui coud deux bas en formant le collant au moyen d'une pince annulaire à éléments pouvant être écartés radialement, laquelle engage le bord de la zone du collant laissée sans couture et destinée au soufflet et, successivement, transfère ledit bord tendu du vêtement sur l'embouchure circulaire horizontale de la tête tubulaire d'une machine qui applique et coud les soufflets, après quoi le vêtement est aspiré à l'intérieur de la tête en laissant à l'extérieur une quantité de tissu suffisante pour la couture du soufflet.
Mais ceci, principalement pour certains types de tissu très délicat, peut entraîner l'apparition de démaillages à cause de l'action des éléments de ladite pince, chacun desquels exerce son action sur une zone restreinte du tissu. Par ailleurs, le fait est que ledit dispositif connu ne permet pas de charger des collants avec la zone périnéale complètement cousue.We know from the Spanish patent Nr. 504417, an automatic device which removes the tights from a machine which sews two stockings forming the tights by means of an annular pliers with elements which can be spread apart radially, which engages the edge of the area of the pantyhose left seamless and intended for the bellows and, successively, transfers said stretched edge of the garment to the horizontal circular mouth of the tubular head of a machine which applies and sews the bellows, after which the garment is sucked inside the head, leaving a sufficient amount of fabric outside for sewing the bellows.
But this, mainly for certain types of very delicate tissue, can lead to the appearance of detangles due to the action of the elements of said clamp, each of which exerts its action on a restricted area of the tissue. Furthermore, the fact is that said known device does not allow pantyhose to be loaded with the perineal area completely sewn.

Le but principal de la présente invention est d'éliminer les inconvénients mentionnés ci-dessus.The main object of the present invention is to eliminate the drawbacks mentioned above.

Ce résultat a été atteint, conformément à la présente invention, en adoptant un procédé qui prévoit de:

  • enfiler un collant sur un support tubulaire asservi à un mouvement vertical alternatif et respectivement rotatoire alternatif autour d'un axe horizontal;
  • disposer ledit support dans la position verticale et maintenir le collant ainsi disposé étroitement adhérent sur le support, au moyen d'un flux d'air aspiré de l'intérieur de celui-ci;
  • soulever ledit support, jusqu'à un niveau approprié pour permettre le blocage du collant par des moyens correspondants activés par le support lui-même;
  • exécuter le trou périnéal dans le collant ainsi maintenu;
  • aspirer le tissu résultant dudit trou périnéal du collant;
  • soulever ultérieurement ledit support jusqu'à disposer le collant correspondant dans la position appropriée pour la préhension par des moyens correspondants montés sur chacune des têtes de la machine à coudre les soufflets;
  • activer lesdits moyens de préhension du collant pour permettre son transfert sur une tête correspondante de la machine;
  • interrompre l'aspiration à l'intérieur dudit support tubulaire;
  • abaisser ledit support et désactiver ainsi lesdits moyens de blocage du collant;
  • aspirer le corps du collant à l'intérieur de la tête correspondante de la machine;
  • basculer vers le bas ledit support tubulaire pour permettre l'enfilage d'un nouveau collant;
  • effectuer le rognage dudit trou périnéal;
  • coudre le soufflet périnéal de renforcement du collant;
  • retourner le collant;
  • couper et aspirer la portion annulaire de tissu enlevée lors du rognage du trou périnéal;
  • désactiver lesdits moyens de préhension du collant pour permettre son déchargement.
This result has been achieved, in accordance with the present invention, by adopting a method which provides for:
  • put on a pair of tights on a tubular support subject to alternating vertical and alternating rotary movement respectively around a horizontal axis;
  • placing said support in the vertical position and keeping the tights thus disposed tightly adhering to the support, by means of a flow of air sucked from the interior thereof;
  • lifting said support to an appropriate level to allow the tights to be blocked by corresponding means activated by the support itself;
  • make the perineal hole in the tights thus maintained;
  • sucking the tissue resulting from said perineal hole in the pantyhose;
  • subsequently lift said support until the corresponding adhesive is placed in the appropriate position for gripping by corresponding means mounted on each of the heads of the bellows sewing machine;
  • activate said means for gripping the tights to allow its transfer to a corresponding head of the machine;
  • interrupting the suction inside said tubular support;
  • lower said support and thus deactivate said adhesive blocking means;
  • suck the body of the pantyhose inside the corresponding machine head;
  • tilt down said tubular support to allow threading of a new pantyhose;
  • trimming said perineal hole;
  • sew the perineal gaiter to strengthen the tights;
  • turn the tights;
  • cut and aspirate the annular portion of tissue removed during trimming of the perineal hole;
  • deactivate said means for gripping the pantyhose to allow it to be unloaded.

Et pour ce qui concerne le dispositif pour mettre en oeuvre ledit procédé, celui-ci comprend:

  • des moyens de support du corps d'un collant, avec une tête aspirante de forme tubulaire qui est munie à l'intérieur d'une résistance électrique annulaire pour exécuter le trou périnéal du collant et d'un conduit pour l'aspiration du tissu ainsi enlevé;
  • des moyens pneumatiques pour asservir ladite tête tubulaire à un mouvement vertical alternatif;
  • des moyens pneumatiques pour asservir ladite tête à un mouvement rotatoire alternatif autour d'un axe horizontal;
  • des moyens de support du corps du collant sur chaque tête de la machine à coudre les soufflets, avec autant de "contre-cônes", chacun desquels est enfilé sur un tube à axe vertical, à l'extrémité inférieure duquel est fixée une tête correspondante;
  • des moyens de préhension du collant, avec plusieurs pinces annulaires élastiques, chacune desquelles est supportée par un contre-cône correspondant;
  • des moyens fixes à came pour la commande du soulèvement et respectivement de l'abaissement desdits contre-cônes;
  • des moyens pneumatiques pour l'activation desdites pinces, lesquels sont disposés en correspondance des stations de chargement et respectivement de retournement du produit manufacturé;
  • des moyens pour la coupe et l'évacuation des déchets qui sont engendrés au cours de l'opération de rognage du trou périnéal par des organes correspondants de la machine, avec un tube aspirant et une résistance électrique correspondante, lesquels sont disposés en correspondance de la station de retournement du produit manufacturé.
And as regards the device for implementing said method, it comprises:
  • means for supporting the body of a pantyhose, with a suction head of tubular shape which is provided inside with an annular electrical resistance to execute the perineal hole of the pantyhose and a conduit for the aspiration of the tissue as well removed;
  • pneumatic means for slaving said tubular head to an alternating vertical movement;
  • pneumatic means for slaving said head to an alternating rotary movement about a horizontal axis;
  • means for supporting the body of the pantyhose on each head of the bellows sewing machine, with as many "counter-cones", each of which is threaded on a tube with a vertical axis, at the lower end of which a corresponding head is fixed ;
  • means for gripping the pantyhose, with several elastic annular clips, each which is supported by a corresponding counter-cone;
  • fixed cam means for controlling the lifting and lowering of said counter cones respectively;
  • pneumatic means for activating said clamps, which are arranged in correspondence with the stations for loading and respectively turning over the manufactured product;
  • means for cutting and evacuating the waste which is generated during the operation of trimming the perineal hole by corresponding organs of the machine, with a suction tube and a corresponding electrical resistance, which are arranged in correspondence with the turning station for the manufactured product.

Les avantages obtenus grâce à la présente invention consistent essentiellement en ce qu'il est possible d'alimenter une machine à coudre les soufflets sans la formation de démaillages dans la zone périnéale du collant sur lequel le soufflet est cousu, même si le tissu est très délicat; en ce que ladite alimentation est automatique et comporte une assistance facile de la part des opérateurs; en ce qu'il est possible d'appliquer ledit soufflet même à des collants en tricotage à filet, du fait que la préhension du collant en correspondance de la zone périnéale est effectuée au moyen d'une pince annulaire, capable de distribuer la sollicitation mécanique correspondante sur une portion circulaire, continue, du tissu, c'est-à-dire sans concentrer la charge de l'effort sur un nombre discret de portions de tissu de petite surface.The advantages obtained by virtue of the present invention essentially consist in the fact that it is possible to feed a bellows sewing machine without the formation of loose parts in the perineal area of the pantyhose on which the bellows is sewn, even if the fabric is very delicate; in that said feeding is automatic and includes easy assistance from operators; in that it is possible to apply said bellows even to tights in net knitting, since the gripping of the tights in correspondence of the perineal area is carried out by means of an annular forceps, capable of distributing the mechanical stress corresponding on a portion circular, continuous, of the tissue, that is to say without concentrating the load of the effort on a discrete number of portions of tissue of small area.

Ces avantages et caractéristiques de l'invention ainsi que d'autres seront plus et mieux compris de chaque homme du métier à la lumière de la description qui va suivre et à l'aide des dessins annexés donnés à titre d'exemplification pratique de l'invention, mais à ne pas considérer dans le sens limitatif; dessins sur lesquels: la Fig. 1A représente une vue en coupe longitudinale d'une tête de support du corps du collant dans la position de repos, dans un dispositif conformément à l'invention; la Fig. 1B représente la vue en coupe longitudinale de la tête de la Fig. 1A dans la position d'exécution du trou périnéal sur le collant respectif; la Fig. 1C représente la vue en coupe longitudinale de la tête de la Fig. 1A dans la position de transfert du collant respectif à la tête correspondante de la machine à coudre les soufflets; la Fig. 1D représente la vue en plan de la tête de la Fig. 1C; la Fig. 1E représente la vue de côté de la tête de la Fig. 1A; la Fig. 1F représente la vue de côté de la tête de la Fig. 1B; la Fig. 2A représente une vue en coupe longitudinale des moyens de préhension du collant dans la position de repos; la Fig. 2B représente la vue en coupe longitudinale des moyens de la Fig. 2A dans la position de chargement du collant; la Fig. 2C représente la vue en coupe longitudinale des moyens de la Fig. 2A dans la position de rognage du trou périnéal du collant; la Fig. 2D représente la vue en coupe longitudinale des moyens de la Fig. 2A dans la position d'application du soufflet; la Fig. 2E représente la vue en coupe longitudinale des moyens de la Fig. 2A dans la position de déchargement du collant; la Fig. 3A représente une vue en coupe longitudinale des moyens de la Fig. 2A en combinaison avec les moyens de coupe et d'évacuation des déchets; la Fig. 3B représente la vue en plan des moyens de la Fig. 3A.These advantages and characteristics of the invention as well as others will be more and better understood by each person skilled in the art in the light of the description which will follow and with the aid of the appended drawings given by way of practical example of the invention, but not to be considered in the limiting sense; drawings in which: FIG. 1A shows a view in longitudinal section of a support head for the body of the pantyhose in the rest position, in a device according to the invention; Fig. 1B shows the longitudinal section view of the head of FIG. 1A in the execution position of the perineal hole on the respective tights; Fig. 1C shows the longitudinal section view of the head of FIG. 1A in the position of transfer of the respective tights to the corresponding head of the bellows sewing machine; Fig. 1D shows the plan view of the head of FIG. 1 C; Fig. 1E shows the side view of the head of FIG. 1A; Fig. 1F shows the side view of the head of FIG. 1B; Fig. 2A shows a view in longitudinal section of the means for gripping the tights in the rest position; Fig. 2B represents the view in longitudinal section of the means of FIG. 2A in the pantyhose loading position; Fig. 2C shows the longitudinal section view of the means of FIG. 2A in the trimming position of the perineal hole in the pantyhose; Fig. 2D represents the view in longitudinal section of the means of FIG. 2A in the position of application of the bellows; Fig. 2E represents the view in longitudinal section of the means of FIG. 2A in the pantyhose unloading position; Fig. 3A shows a view in longitudinal section of the means of FIG. 2A in combination with the waste cutting and disposal means; Fig. 3B shows the plan view of the means of FIG. 3A.

Réduit à sa structure essentielle et en référence aux figures des dessins annexés, un procédé pour le chargement automatique d'une machine à coudre les soufflets sur des vêtements en tricot de type collants conformément à l'invention, comprend, dans l'ordre, les phases suivantes:

  • enfiler un collant sur un support tubulaire (100) asservi à un mouvement vertical alternatif et respectivement rotatoire alternatif autour d'un axe horizontal;
  • disposer ledit support (100) dans la position verticale et maintenir le collant ainsi disposé étroitement adhérent sur le support, au moyen d'un flux d'air aspiré de l'intérieur de celui-ci;
  • soulever ledit support (100), jusqu'à un niveau approprié pour permettre le blocage du collant par des moyens correspondants (110) activés par le support (100) lui-même;
  • exécuter le trou périnéal dans le collant ainsi maintenu;
  • aspirer le tissu résultant dudit trou périnéal du collant;
  • soulever ultérieurement ledit support (100) jusqu'à disposer le collant correspondant dans la position appropriée pour la préhension par des moyens correspondants (25, 31) montés sur chacune des têtes de la machine à coudre les soufflets;
  • activer lesdits moyens (25,31) de préhension du collant pour permettre son transfert sur une tête correspondante (27) de la machine;
  • interrompre l'aspiration à l'intérieur dudit support tubulaire (100);
  • abaisser ledit support (100) et désactiver ainsi lesdits moyens (110) de blocage du collant;
  • aspirer le corps du collant à l'intérieur de la tête correspondante (27) de la machine;
  • basculer vers le bas ledit support tubulaire (100) pour permettre l'enfilage d'un nouveau collant;
  • effectuer le rognage dudit trou périnéal;
  • coudre le soufflet périnéal de renforcement du collant;
  • retourner le collant;
  • couper et aspirer la portion annulaire de tissu enlevée lors du rognage du trou périnéal;
  • désactiver lesdits moyens (25, 31) de préhension du collant pour permettre son déchargement.
Reduced to its essential structure and with reference to the figures of the accompanying drawings, a process for the automatic loading of a gusset sewing machine onto knitted garments of the pantyhose type in accordance with the invention, comprises, in order, the following phases:
  • put on a pantyhose on a tubular support (100) slaved to a reciprocating vertical and alternating rotary movement respectively around a horizontal axis;
  • placing said support (100) in the vertical position and keeping the tights thus disposed tightly adhering to the support, by means of a flow of air sucked from the interior thereof;
  • lifting said support (100) to an appropriate level to allow the pantyhose to be blocked by corresponding means (110) activated by the support (100) itself;
  • make the perineal hole in the tights thus maintained;
  • aspirate the tissue resulting from said perineal hole of the tights;
  • subsequently lifting said support (100) until the corresponding adhesive is placed in the appropriate position for gripping by corresponding means (25, 31) mounted on each of the heads of the bellows sewing machine;
  • activating said means (25, 31) for gripping the tights to allow its transfer to a corresponding head (27) of the machine;
  • interrupting the suction inside said tubular support (100);
  • lowering said support (100) and thus deactivating said means (110) for blocking the adhesive;
  • suck the body of the pantyhose inside the corresponding head (27) of the machine;
  • tilt down said tubular support (100) to allow threading of a new pantyhose;
  • trimming said perineal hole;
  • sew the perineal gaiter to strengthen the tights;
  • turn the tights;
  • cut and aspirate the annular portion of tissue removed during trimming of the perineal hole;
  • deactivate said means (25, 31) for gripping the pantyhose to allow its unloading.

Un dispositif pour mettre en oeuvre ledit procédé, conformément à l'invention, comprend:

  • une tête tubulaire de support (100) du corps d'un collant, avec une chambre annulaire (1) reliée à un collecteur (2) d'aspiration, avec une résistance électrique (9) annulaire pour découper le bord du trou du collant destiné au soufflet et avec un conduit (8) situé au-dessous de la résistance (9) pour aspirer le tissu du collant ainsi enlevé;
  • des moyens de déplacement vertical de ladite tête (100), alternativement dans les deux directions, avec un cylindre d'actionnement (101) correspondant à axe vertical, dont la tige (102) est fixée à la base inférieure d'un chariot (103) de support de la tête (100);
  • des moyens de déplacement de ladite tête (100) autour d'un axe horizontal, c'est-à-dire orthogonal à la direction de coulissement de la tête (100), alternativement dans les deux directions, avec un cylindre d'actionnement (104) correspondant fixé au chariot (103) et avec un levier (106) relié, à une extrémité, avec la tige du cylindre (104) et, à l'extrémité diamétralement opposée, avec la tête (100), de manière que l'extraction, respectivement la rétraction, de ladite tige (105) entraîne la rotation dans le sens des aiguilles d'une montre, respectivement dans le sens contraire, du levier (106) et, en même temps que celui-ci, de la tête (100);
  • un collier (110) monté au-dessus et coaxialement avec ladite tête (100) pour bloquer le tissu disposé dessus, en coopération avec l'aspiration dans la chambre (1), durant l'opération de chargement de la tête (27) de la machine à coudre les soufflets: ledit collier (110) étant fixé à un chariot (111) correspondant, lequel est asservi à un mouvement vertical alternatif, c'est-à-dire de soulèvement et respectivement d'abaissement, en synchronisme avec le soulèvement et respectivement l'abaissement de la tête (100), de manière à se trouver dans la position de blocage du collant lorsque la tête (100) est soulevée pour alimenter la machine et, respectivement, dans la position de libération du collant lorsque l'aspiration est activée dans la tête (27) de ladite machine;
  • des moyens de support des collants sur chaque tête (27) de la machine à coudre les soufflets, avec autant de contre-cônes (25), chacun desquels est enfilé sur un tube (26) à axe vertical, à l'extrémité inférieure duquel est fixée une tête (27) correspondante de la machine;
  • des moyens de préhension du collant, avec une pince (31) annulaire élastique, normalement fermée, pour chaque tête (27), laquelle est supportée par un contre-cône (25) correspondant;
  • des moyens (400) fixes à came pour la commande du soulèvement et respectivement de l'abaissement desdits contre-cônes (25);
  • des moyens pneumatiques (450) pour l'activation desdites pinces (31), lesquels sont disposés en correspondance des stations de chargement et respectivement de retournement du produit manufacturé;
  • des moyens pour la coupe et l'évacuation des déchets qui sont engendrés au cours de l'opération de rognage du trou périnéal, avec une résistance électrique (40) et un tube aspirant (38), lesquels sont asservis à un mouvement alternatif de rapprochement et respectivement d'éloignement par rapport à la station de rognage.
A device for implementing said method, in accordance with the invention, comprises:
  • a tubular support head (100) of the body of a pantyhose, with an annular chamber (1) connected to a suction manifold (2), with a resistance electric (9) annular for cutting the edge of the hole of the pantyhose intended for the bellows and with a conduit (8) located below the resistance (9) for sucking the fabric of the pantyhose thus removed;
  • means for vertically moving said head (100), alternately in both directions, with an actuating cylinder (101) corresponding to a vertical axis, the rod (102) of which is fixed to the lower base of a carriage (103 ) supporting the head (100);
  • means for moving said head (100) about a horizontal axis, that is to say orthogonal to the sliding direction of the head (100), alternately in both directions, with an actuating cylinder ( 104) corresponding fixed to the carriage (103) and with a lever (106) connected, at one end, with the cylinder rod (104) and, at the diametrically opposite end, with the head (100), so that the extraction, respectively retraction, of said rod (105) causes the rotation (clockwise, respectively anticlockwise) of the lever (106) and, at the same time as this, of the head (100);
  • a collar (110) mounted above and coaxially with said head (100) to block the tissue disposed above, in cooperation with the suction in the chamber (1), during the loading operation of the head (27) the bellows sewing machine: said collar (110) being fixed to a corresponding carriage (111), which is slaved to an alternating vertical movement, that is to say lifting and lowering respectively, in synchronism with the lifting and lowering of the head (100) respectively, so as to be in the locking position of the pantyhose when the head (100) is raised to feed the machine and, respectively, in the release position of the pantyhose when the suction is activated in the head (27) of said machine;
  • means for supporting the tights on each head (27) of the bellows sewing machine, with as many counter cones (25), each of which is threaded on a tube (26) with a vertical axis, at the lower end of which is fixed a corresponding head (27) of the machine;
  • means for gripping the pantyhose, with an elastic annular forceps (31), normally closed, for each head (27), which is supported by a corresponding counter-cone (25);
  • fixed cam means (400) for controlling the lifting and lowering of said counter cones (25) respectively;
  • pneumatic means (450) for activating said clamps (31), which are arranged in correspondence with the stations for loading and respectively turning over the manufactured product;
  • means for cutting and evacuating the waste which is generated during the operation of trimming the perineal hole, with an electrical resistance (40) and a suction tube (38), which are controlled by an alternating movement of approach and respectively of distance by report to the cropping station.

Suivant une forme préférée de mise en oeuvre de l'invention, la zone de préhension de ladite pince (31) est constituée par une couronne circulaire munie de plusieurs entailles longitudinales.According to a preferred form of implementation of the invention, the gripping zone of said clamp (31) is constituted by a circular crown provided with several longitudinal notches.

Conformément à l'invention et en référence aux Fig. 1A-1C des dessins annexés, la paroi latérale de ladite tête (100) est munie de plusieurs trous (4) traversants pour permettre la communication de la chambre (1) avec le collecteur (2) d'aspiration, de manière que le tissu du collant y adhére complètement durant l'opération de chargement de la machine à coudre les soufflets.
Ledit collier (110) permet ainsi de garantir le positionnement correct du collant au cours de l'exécution du trou périnéal, même dans le cas où le tissu est très "lourd", c'est-à-dire de densité élevée, et permet, par ailleurs, d'éviter le glissement du collant sur les parois latérales de la tête (100) au cas où ledit trou serait de petit diamètre.According to the invention and with reference to Figs. 1A-1C of the accompanying drawings, the side wall of said head (100) is provided with several through holes (4) to allow communication of the chamber (1) with the suction manifold (2), so that the fabric the adhesive completely adheres to it during the loading operation of the bellows sewing machine.
Said collar (110) thus guarantees the correct positioning of the pantyhose during the execution of the perineal hole, even in the case where the tissue is very "heavy", that is to say of high density, and allows , moreover, to avoid the sliding of the tights on the side walls of the head (100) in case said hole is of small diameter.

Avantageusement, ledit chariot (111) est muni de moyens élastiques (112) d'opposition au soulèvement et d'un élément inférieur (113) de butée avec un cylindre opérateur (114) correspondant pour empêcher son abaissement au-dessous d'un niveau prédéterminé.Advantageously, said carriage (111) is provided with elastic means (112) for opposing lifting and with a lower stop element (113) with a corresponding operating cylinder (114) to prevent its lowering below a level. predetermined.

Par ailleurs, avantageusement, conformément à l'invention, l'embouchure (39) dudit tube (38) est profilée en forme de buse pour permettre une bonne aspiration desdits déchets.Furthermore, advantageously, in accordance with the invention, the mouth (39) of said tube (38) is profiled in the form of a nozzle to allow good suction of said waste.

Avantageusement, ladite résistance électrique annulaire (9) est fixée aux extrémités supérieures de deux barres parallèles (12) qui coulissent sur un guide isolé (13) parallèle à l'axe (a) de la tête (100), sous la commande d'un cylindre pneumatique (14) correspondant.
Il va de soi que ladite résistance (9) est alimentée par une source électrique appropriée, au moyen de deux bornes (15).Advantageously, said annular electrical resistance (9) is fixed to the upper ends of two parallel bars (12) which slide on an insulated guide (13) parallel to the axis (a) of the head (100), under the control of a corresponding pneumatic cylinder (14).
It goes without saying that said resistor (9) is supplied by an appropriate electrical source, by means of two terminals (15).

Conformément à une forme alternative de mise en oeuvre de l'invention, ledit chariot (111) est supporté par la tête (100) elle-même.According to an alternative embodiment of the invention, said carriage (111) is supported by the head (100) itself.

Par ailleurs, il est avantageusement prévu que lesdits moyens de déplacement de la tête (100) peuvent comprendre plusieurs autres cylindres opérateurs, non représentés par simplification, pour permettre la distribution uniforme de la charge de travail et permettre son positionnement correct dans les positions d'enfilage du corps du collant et de soulèvement pour exécuter le trou périnéal et pour alimenter la machine à coudre les soufflets.Furthermore, it is advantageously provided that said head displacement means (100) can comprise several other operating cylinders, not shown for simplification, to allow the uniform distribution of the work load and allow its correct positioning in the positions of threading the tights and lifting body to execute the perineal hole and to feed the gaiter sewing machine.

Conformément à l'invention, les têtes (27) de la machine, les contre-cônes (25) et les pinces élastiques (31) sont équipés de plusieurs goupilles (200) dépassant radialement de celles-ci (27), lesquelles goupilles (200) sont logées coulissantes dans des rainures correspondantes parallèles à l'axe des têtes (27) correspondantes, pour faciliter l'éloignement des déchets (300) engendrés au cours du rognage du trou du collant: lesdites goupilles (200) étant disposées au-dessus des pinces respectives (31) dans la position de transfert du collant de la tête (100) à la tête correspondante (27) et au-dessous des pinces (31) et des contre-cônes (25) dans les positions qui correspondent à l'application du soufflet et au déchargement du collant.
De cette manière, lorsque le collant qui vient d'être cousu est libéré par la pince respective (31), les goupilles (200) poussent le tissu en excès (300) vers la résistance (40) qui permet de le couper avant qu'il ne soit aspiré par le tube (38).According to the invention, the heads (27) of the machine, the counter cones (25) and the elastic clamps (31) are equipped with several pins (200) protruding radially from these (27), which pins (200) are slidably housed in corresponding grooves parallel to the axis of the corresponding heads (27), to facilitate removal of the waste (300) generated during of the trimming of the hole of the pantyhose: the said pins (200) being arranged above the respective pliers (31) in the position of transfer of the pantyhose from the head (100) to the corresponding head (27) and below the pliers ( 31) and counter cones (25) in the positions which correspond to the application of the bellows and the unloading of the tights.
In this way, when the sticky which has just been sewn is released by the respective clamp (31), the pins (200) push the excess fabric (300) towards the resistance (40) which makes it possible to cut it before it is not sucked by the tube (38).

Le fonctionnement du dispositif est le suivant.
Une fois mise en route la rotation de la machine à coudre les soufflets, la pince (31) de la tête (27) dans la station de chargement du collant est disposée dans la condition d'ouverture. Ensuite, la tête tubulaire (100) est positionnée dans la position inclinée abaissée pour permettre à l'opérateur de disposer sur celle-ci de manière centrée le collant à traiter. Au terme de cette opération, la tête (100) est disposée en position verticale et l'aspiration est activée dans la chambre (1). Successivement, le soulèvement de la tête (100) est commandé jusqu'elle vienne en contact avec le collier (110) qui empêche le glissement du collant et le soulèvement de la résistance annulaire (9) est commandé pour exécuter le trou périnéal dans le collant. Après quoi, le tissu ainsi enlevé est aspiré à travers le conduit (8) et la tête (100) est ultérieurement soulevée jusqu'à ce qu'elle se trouve avec sa partie supérieure au-dessus du contre-cône (25). Successivement, la pince (31) est abaissée et fermée pour capturer le collant, l'aspiration dans la chambre (1) est interrompue et la tête (100) avec le collier (110) sont ramenés dans leur position initiale respective pour permettre la mise en place d'un nouveau collant. Au terme de la course de retour respective, la tête (100) se trouve de nouveau dans la position abaissée. A ce point, l'aspiration commence dans la tête (27) pour y retenir le corps du collant avant les jambes, lesquelles sont tenues par l'opérateur et par des moyens pneumatiques appropriés. Au terme de l'opération de chargement, la tête (100) est inclinée vers le bas pour permettre la mise en place d'un nouveau collant. Durant la rotation successive de la machine pour transférer la tête (27) de la station de chargement à celle de rognage du trou périnéal, le contre-cône respectif (25) est soulevé avec le collant correspondant afin que celui-ci soit disposé au niveau correct pour le rognage. Dans cette phase, les goupilles (200) se trouvent au-dessous de la pince (31) et du contrecône (25). Au terme du rognage, le contre-cône (25) est ultérieurement soulevé pour permettre aux moyens de couture d'effectuer leur opération. Après le retournement successif du collant, la portion annulaire de tissu (300) enlevée lors du rognage du trou périnéal se trouve à l'extérieur de la tête (27) correspondante et maintenue en tension par les goupilles (200), de manière que le rapprochement de la résistance (40) provoque sa coupe et, lors de l'ouverture de la pince (31), son aspiration à travers l'embouchure (39).The operation of the device is as follows.
Once the rotation of the bellows sewing machine has started, the clamp (31) of the head (27) in the pantyhose loading station is disposed in the open condition. Then, the tubular head (100) is positioned in the lowered inclined position to allow the operator to center the tights to be treated thereon. At the end of this operation, the head (100) is placed in a vertical position and the suction is activated in the chamber (1). Successively, the uprising of the head (100) is controlled until it comes into contact with the collar (110) which prevents the pantyhose from sliding and the lifting of the annular resistance (9) is controlled to execute the perineal hole in the pantyhose. After which, the tissue thus removed is sucked through the conduit (8) and the head (100) is subsequently lifted until it is with its upper part above the counter-cone (25). Subsequently, the clamp (31) is lowered and closed to capture the sticky, the suction in the chamber (1) is interrupted and the head (100) with the collar (110) are returned to their respective initial position to allow the setting in place of a new pantyhose. At the end of the respective return stroke, the head (100) is again in the lowered position. At this point, suction begins in the head (27) to retain the body of the pantyhose before the legs, which are held by the operator and by suitable pneumatic means. At the end of the loading operation, the head (100) is inclined downwards to allow the fitting of a new sticker. During the successive rotation of the machine to transfer the head (27) from the loading station to that of trimming the perineal hole, the respective counter-cone (25) is lifted with the corresponding sticky so that it is placed at the level ok for trimming. In this phase, the pins (200) are located below the clamp (31) and the counter-cone (25). After trimming, the counter cone (25) is subsequently raised to allow the sewing means to perform their operation. After the successive turning of the tights, the annular portion of tissue (300) removed during the trimming of the perineal hole is located outside the corresponding head (27) and kept in tension by the pins (200), so that the approximation of the resistor (40) causes it to be cut and, when the clamp (31) is opened, its suction through the mouth (39).

Claims (9)

  1. Process for the automatic loading of a machine for sewing the puckers on knitted garments of the close-fitting type, characterized by the fact that it comprises, in the order given, the following phases:
    - slipping a close-fitting garment onto a tubular support (100) caused to perform an alternating vertical movement and an alternating rotatory movement about a horizontal axis;
    - placing the said support (100) in the vertical position and causing the garment thus positioned to continue to adhere tightly to the support by means of a flow of air derived by suction from the interior of the said support;
    - raising the said support (100) to a level enabling the garment to be secured by corresponding means (110) activated by the support (100) itself;
    - forming the perineal opening in the garment thus secured;
    - removing the resulting fabric from the said perineal opening of the garment;
    - raising the said support (100) still farther until the corresponding garment occupies the position enabling it to be gripped by corresponding means (25,31) mounted on each of the heads of the pucker sewing machine;
    - activating the said pucker gripping means (25,31) to enable it to be transferred to a corresponding head (27) of the machine;
    - interrupting the suction intake from the interior of the said tubular support (100);
    - lowering the said support (100) and thus de-activating the said garment securing means (110);
    - causing the body of the garment to enter the corresponding head (27) of the machine by suction;
    - tilting the bottom of the said tubular support (100) to enable a further garment to be mounted;
    - cutting the aforementioned perineal opening;
    - sewing the perineal reinforcement pucker of the garment;
    - turning over the garment;
    - cutting and taking in by suction the annular portion of fabric which was removed by the cutting of the perineal opening;
    - de-activating the aforementioned garment gripping means (25,31) in order to enable the garment to be discharged.
  2. Apparatus for the automatic loading of a machine for sewing the puckers on knitted garments of the close-fitting type in accordance with the process described in Claim 1, characterized by the fact that it comprises:
    - a tubular support head (100) for the body of a close-fitting garment, with an annular chamber (1) connected to a suction collector (2) with an annular electrical resistance (9), serving to cut off the edge of the opening intended for the pucker in the garment, and with a pipe (8) situated underneath the resistance (9) and serving to remove by suction the fabric thus detached from the garment;
    - means for vertically moving the said head in both directions alternately, with an associated actuating cylinder (101) with a vertical axis, of which the rod (102) is attached to the lower base of a support carriage (103) of the head (100);
    - means for moving the said head (100) around a horizontal axis, i.e. orthogonally to the sliding direction of the head (100), in both directions alternately, with an associated actuating cylinder (104) affixed to the carriage (103) and with a lever (106) connected by one end to the rod of the cylinder (104) and by the diametrically opposite end to the head (100) in such a way that the extraction and retraction respectively of the said rod (105) causes the lever (106) and simultaneously therewith the head (100) to rotate in the clockwise direction and in the opposite direction respectively;
    - a collar (110) positioned above and coaxially with the said head (100), to lock the fabric situated above, in conjunction with the suction in the chamber (1), during the operation of loading the head (27) of the pucker sewing machine, the said collar (110) being affixed to an associated carriage (111) subjected to an alternating vertical movement, i.e. an ascending and descending movement, synchronously with the ascending and descending movement of the head (100), so that it occupies the garment locking position when the head is raised in order to feed the machine and the garment releasing position when the suction is activated in the head (27) of the said machine;
    - means for supporting the garments on each head (27) of the pucker sewing machine, with the same number of counter-cones (25), each of which is mounted on a tube (26) with a vertical axis to the lower end of which is affixed a corresponding head (27) of the machine;
    - means for gripping the garment, with an annular elastic clamp, normally closed, for each head (27), supported by an associated counter-cone (25);
    - fixed cam means (400) for effecting the ascending and lowering movement respectively of the said counter-cones (25);
    - pneumatic means (450) for the activation of the said clamps (31), the said means being positioned in accordance with the loading and return stations respectively for the manufactured product;
    - means for cutting off and discharging the waste material generated in the course of the operation of cutting the perineal opening, with an electrical resistance (40) and a suction tube (38), which are caused to perform an alternating approach and departure movement respectively in relation to the corresponding head (27);
  3. Apparatus in accordance with Claim 2, characterized by the fact that the side wall of the said head (100) is provided with a number of transversal holes (4) as a means of communication between the chamber (1) and the suction collector (2), so that the fabric of the garment will adhere completely thereto during the operation of loading the machine.
  4. Apparatus in accordance with Claim 2, characterized by the fact that the said carriage (111) is provided with elastic means opposing the ascending movement and with a lower thrust-block element with an associated operating cylinder (114) serving to prevent it from being lowered beyond a certain predetermined level.
  5. Apparatus in accordance with Claim 2, characterized by the fact that the mouth of the said tube is shaped to form a nozzle.
  6. Apparatus in accordance with Claim 2, characterized by the fact that the said annular electrical resistance (9) is affixed to the upper ends of two parallel bars (12) which slide on an insulated guide (13) parallel to the axis (a) of the head (100) under the control of an associated pneumatic cylinder (14).
  7. Apparatus in accordance with Claim 4, characterized by the fact that the said carriage (111) is supported by the head (100) itself.
  8. Apparatus in accordance with Claim 2, characterized by the fact that the said means for moving the head (100) comprise a number of further operating cylinders to enable the working load to be evenly distributed and correctly placed in the positions for mounting the body of the garment and raising it in order to produce the perineal opening and feed the pucker sewing machine.
  9. Apparatus in accordance with Claim 2, characterized by the fact that the heads (27) of the machine, the counter-cones (25) and the elastic clamps (31) are fitted with a number of pins (200) projecting beyond the said heads (27) in the radial direction, the said pins (200) being slidably mounted in corresponding grooves parallel to the axis of the corresponding heads (27), in order to facilitate the removal of the waste material (300) generated during the cutting of the opening in the garment, the said pins (200) being positioned above the respective clamps (31) in the position for the transfer of the garment from the head (100) to the corresponding head (27) and below the clamps (31) and counter-cones (25) in the positions corresponding to the application of the pucker and the discharge of the garment.
EP93830459A 1993-11-18 1993-11-18 Method and apparatus for the automatic loading of a machine for sewing gussets on knitted garments of the "pantyhose" type Expired - Lifetime EP0654554B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP93830459A EP0654554B1 (en) 1993-11-18 1993-11-18 Method and apparatus for the automatic loading of a machine for sewing gussets on knitted garments of the "pantyhose" type
DE69303716T DE69303716D1 (en) 1993-11-18 1993-11-18 Method and device for automatically loading a sewing machine for applying a gusset to knitted garments of the pantyhose type
CA002109991A CA2109991A1 (en) 1993-11-18 1993-11-25 Method and apparatus for the automatic loading of a machine for sewing gussets on pantyhose-type hosiery articles
US08/161,879 US5460108A (en) 1993-11-18 1993-12-02 Method and apparatus for the automatic loading of a machine for sewing gussets on pantyhose-type hosiery articles
JP5348654A JPH07216602A (en) 1993-11-18 1993-12-27 Method and apparatus for automatic loading on gore stitching machine for panty stocking type socks article

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP93830459A EP0654554B1 (en) 1993-11-18 1993-11-18 Method and apparatus for the automatic loading of a machine for sewing gussets on knitted garments of the "pantyhose" type
CA002109991A CA2109991A1 (en) 1993-11-18 1993-11-25 Method and apparatus for the automatic loading of a machine for sewing gussets on pantyhose-type hosiery articles
US08/161,879 US5460108A (en) 1993-11-18 1993-12-02 Method and apparatus for the automatic loading of a machine for sewing gussets on pantyhose-type hosiery articles
JP5348654A JPH07216602A (en) 1993-11-18 1993-12-27 Method and apparatus for automatic loading on gore stitching machine for panty stocking type socks article

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EP0654554A1 EP0654554A1 (en) 1995-05-24
EP0654554B1 true EP0654554B1 (en) 1996-07-17

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US (1) US5460108A (en)
EP (1) EP0654554B1 (en)
JP (1) JPH07216602A (en)
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JP3122589B2 (en) * 1994-12-29 2001-01-09 株式会社タカトリ How to attach pantyhose material
IT1316339B1 (en) * 2000-02-04 2003-04-10 Guerrino Rumi EQUIPMENT AND PROCEDURE FOR AUTOMATIC FEEDING A STITCHER'S STITCHER
US6956966B2 (en) * 2001-04-03 2005-10-18 Electronics For Imaging, Inc. Method and apparatus for automated image correction for digital image acquisition
CN111394979A (en) * 2020-01-21 2020-07-10 哈工大机器人义乌人工智能研究院 Automatic crotch machine of integrative trousers

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IT7809326A0 (en) * 1978-01-27 1978-01-27 Chietti Giovanni SEMI-AUTOMATIC EQUIPMENT FOR LOADING TUBULAR PRODUCTS FOR SOCKS OR SIMILAR ONTO SEWING MACHINES AND FOR OTHER USES
IT1069950B (en) * 1979-01-09 1985-03-25 Solis Srl METHOD FOR APPLYING AN ANCHOR TO TUBULAR ARTICLES SUCH AS LADIES 'SOCKS AND MACHINE TO IMPLEMENT THE METHOD
DE3262781D1 (en) * 1981-07-17 1985-05-02 Solis Srl Method and device for transferring pantyhose from a sewing station to a crotch-sewing unit
IT1192412B (en) * 1982-05-03 1988-04-13 Solis Srl SEWING MACHINE DOWELS ON KNITWEAR "TIGHTS" TYPE WITH AUTOMATED FEEDING
IT1212959B (en) * 1983-08-05 1989-12-07 Solis Srl DEVICE FOR TENSIONING THE EDGE TO BE SEWED TO THE DOCK OF THE TIGHTS WITH DOWEL IN THE MACHINE STITCHING MACHINE WITH AUTOMATED FEEDING
US4566615A (en) * 1984-01-17 1986-01-28 Tomotake Nakahira Apparatus for turning a circular knit hose inside out and sectioning same into unit hoses
US4538534A (en) * 1984-05-09 1985-09-03 Kayser-Roth Hosiery, Inc. Apparatus and method for processing hosiery blanks

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DE69303716D1 (en) 1996-08-22
US5460108A (en) 1995-10-24
EP0654554A1 (en) 1995-05-24
JPH07216602A (en) 1995-08-15
CA2109991A1 (en) 1995-05-26

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