EP0478872A1 - Festoon-sewing machine with a device for automatically positioning a pattern-cam - Google Patents

Festoon-sewing machine with a device for automatically positioning a pattern-cam Download PDF

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Publication number
EP0478872A1
EP0478872A1 EP90870161A EP90870161A EP0478872A1 EP 0478872 A1 EP0478872 A1 EP 0478872A1 EP 90870161 A EP90870161 A EP 90870161A EP 90870161 A EP90870161 A EP 90870161A EP 0478872 A1 EP0478872 A1 EP 0478872A1
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EP
European Patent Office
Prior art keywords
cam
festonneuse
reference point
drive mechanism
patterned
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90870161A
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German (de)
French (fr)
Inventor
Charles L. Beauduin
Jos W . Jacobs
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.)
Titan Baratto NV
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Titan Baratto NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Titan Baratto NV filed Critical Titan Baratto NV
Priority to EP90870161A priority Critical patent/EP0478872A1/en
Publication of EP0478872A1 publication Critical patent/EP0478872A1/en
Withdrawn legal-status Critical Current

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    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05CEMBROIDERING; TUFTING
    • D05C7/00Special-purpose or automatic embroidering machines
    • D05C7/06Special-purpose or automatic embroidering machines for embroidering festoons
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B19/00Programme-controlled sewing machines
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B69/00Driving-gear; Control devices
    • D05B69/20Control devices responsive to the number of stitches made

Definitions

  • the present invention relates to a festooner which is provided with a device making it possible to automatically, precisely and quickly position the patterned cam with respect to positions corresponding to defined reference points on a fabric.
  • a scalloping machine To border a fabric (for example a tablecloth, a bed sheet, a pillowcase, etc.) of scalloped bows, a scalloping machine is used provided with a patterned cam.
  • a particular difficulty appears when one wishes to border aesthetically by such scalloped arcs, the corners of a fabric.
  • the starting position of the cam and the length of the arcs must be chosen in such a way that at the end of the work, the end of the last arc aesthetically joins the start of the next scalloping arc after rotation of the fabric.
  • the scalloping of the fabric is completed at a first point (a) (FIG. 1a) chosen in such a way that only half to three-quarters of the last arched pattern is produced.
  • the festooner is then stopped and the fabric is turned ( Figure 1b), usually 90 °, on the corner.
  • the patterned cam is then repositioned by hand, more or less as judged, to a position which corresponds to a second reference point (b) (FIGS. 1 and 1c) from which the scalloping is continued.
  • the fraction of the scalloping arc made from the second reference point (b) is equal to that made up to the first reference point (a) and symmetrical with respect to the bisector of the angle of rotation.
  • the object of the invention is to provide a festoon facilitating the work of the user and more specifically a festoon provided with a device which allows the pattern cam to be turned quickly, automatically and precisely to an appropriate position corresponding to the second reference point (b). It also aims to provide such a device, simple and inexpensive, which allows, depending on the pattern and dimensions of the fabric, to choose between several suitable positions corresponding to a reference point (b) and therefore to widen the number of scalloping possibilities on the corners of the fabric.
  • the subject of the invention is a festooner provided with a patterned cam which can be automatically moved from a first to a second position corresponding to the reference points (a) and (b).
  • the scallop is provided with a device for positioning the cam comprising a mechanism for driving this cam, comprising an electric motor which can transmit a rotary movement to it and an electronic device which can memorize the chosen position of the corresponding cam.
  • a device for positioning the cam comprising a mechanism for driving this cam, comprising an electric motor which can transmit a rotary movement to it and an electronic device which can memorize the chosen position of the corresponding cam.
  • initiate the operation of the drive mechanism detect using a sensor at least one reference point located on the cam and stop the operation of the drive mechanism when the position of the cam coincides with the memorized position.
  • the patterned cam can be moved to several different positions corresponding to a reference point (b) as required.
  • Pressing a given start switch defines, possibly among several other possibilities, the position of the cam corresponding to the reference point (b). This position is memorized by the central processing unit and is compared with the position detected by the sensor corresponding to the tripped switch.
  • the central processing unit transmits the trigger and stop signals to the cam drive mechanism via the power stage this.
  • the drive mechanism of the patterned cam comprises a clutch and a toothed belt.
  • the electric motor can also be placed in the axis of the patterned cam.
  • the motor can be housed in a dust-proof housing.
  • the electronic device may include a printed circuit which is preferably housed in the head of the scallop.
  • the festooner can receive cams with different patterns, which, combined with several pairs of reference points considerably widens the range of festooning possibilities.
  • the start switches are advantageously mounted in parallel, as are the optical sensors.
  • Each chosen final position of the cam therefore corresponds to a given switch and a given sensor.
  • Figure 1 shows in 1 a, 1 and 1 c, the three stages of scalloping a corner of fabric.
  • the scalloping is interrupted before the corner whereas only approximately three quarters of the last arched pattern has been produced, which is shown in FIG. 1 a.
  • the fabric is then rotated 90 °.
  • the patterned cam was brought by hand to a second reference point.
  • the device of the invention is intended to bring it there automatically (FIG. 1 c). From this point, the last three quarters of the next arc are made.
  • FIG. 2 shows a scallop 1 provided with a positioning device 3 according to the invention.
  • This positioning device 3 comprises a patterned cam 5, which is actuated by means of a direct current electric motor 7 which generates a rotary movement and which is equipped with a cam drive mechanism 5 consisting of a toothed belt 9 to which it is connected by means of a clutch 11.
  • the fabric transport mechanism 13 When the scallop 1 is operating, the fabric transport mechanism 13 is located downwards, and the clutch 11 interrupts the connection between the motor 7 and the belt 9 which turns the cam 5.
  • the fabric is turned and the transmission of the movement from the motor 7 to the cam 5 is triggered by depressing a start switch 15.
  • the number of these start switches 15 can be variable as required, depending on the number of different type (b) reference points according to which it is desired that the positioning device 3 operates.
  • the different positions of the cam corresponding to the reference point (b) can be stored in the central processing unit 17 of a modular electronic control device in three parts, shown diagrammatically in FIG. 4, which is able to control the operation motor 7 and clutch 11.
  • the flow switches (151 to 153) are connected in parallel. There are two of them in Figure 2 and three in Figure 4 where they are symbolized by rectangles.
  • an optical sensor 19 By position of the cam corresponding to the stored reference point (b), an optical sensor 19 is provided which detects the actual position of the cam and transmits data to the central processing unit 17, which compares it with the stored position. It should be noted that a single sensor unit 19 is shown in FIG. 2 comprising the two sensors 191 and 192. These are symbolized by rectangles in FIG. 4.
  • the electronic device as shown in Figure 4 is therefore built on a modular diagram in three parts.
  • the control signals circulate by means of a connector bus (not shown) which can communicate with the sensors 19 and the switches 15 by means of a standard 15-pole plug by shielded cable.
  • the control PCB can be mounted almost anywhere.
  • the ideal place is a oil-free space, specially provided in the head of the festooner.
  • the metal of the head in principle adequately protects from disturbing electric fields.
  • the cable length can be reduced to a minimum.
  • the central processing unit 17 sends a control signal to a power stage 21 which acts on the clutch 11 so that the belt 9 no longer rotates and the cam 5 stops its movement.
  • the festooner 1 then resumes its work from the second reference point (b) reached.
  • the reference point (b) on the cam ( Figure 2) is placed so that the fraction of the last arched pattern produced before the fabric is turned, is equal and symmetrical to the fraction produced after the automatic positioning of the cam 5.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The invention relates to a festoon-sewing machine (1) equipped with a pattern cam (5) which can be displaced from a first position to a second position corresponding to a first and a second reference point defined on the fabric by means of an automatic positioning device comprising a mechanism for driving the cam (5) and an electronic device. <IMAGE>

Description

La présente invention concerne une festonneuse qui est munie d'un dispositif permettant de positionner automatiquement, avec précision et rapidité, la came à motif par rapport à des positions correspondant à des points de référence définis sur un tissu.The present invention relates to a festooner which is provided with a device making it possible to automatically, precisely and quickly position the patterned cam with respect to positions corresponding to defined reference points on a fabric.

Ces points de référence sont calculés de manière que les arcs de festonnage soient réguliers et continus et se rejoignent esthétiquement dans les coins du tissu.These reference points are calculated so that the scallop arcs are regular and continuous and aesthetically meet in the corners of the fabric.

Arrière-plan technologiqueTechnological background

Pour border un tissu (par exemple une nappe, un drap de lit, une taie d'oreiller, etc.) d'arcs de festonnage, on utilise une festonneuse munie d'une came à motif. Une difficulté particulière apparaît lorsqu'on souhaite border esthétiquement par de tels arcs de festonnage, les coins d'un tissu. La position de départ de la came et la longueur des arcs doivent être choisies de manière telle qu'à la fin du travail, l'extrémité du dernier arc rejoigne esthétiquement le début du premier arc de festonnage suivant, après rotation du tissu. Habituellement, on achève le festonnage du tissu en un premier point (a) (figure 1a) choisi de manière telle que seulement une moitié à trois-quart du dernier motif arqué est réalisé. La festonneuse est alors arrêtée et le tissu est tourné (figure 1 b), habituellement de 90°, sur le coin. La came à motif est alors repositionnée à la main, plus ou moins au jugé, jusqu'à une position qui correspond à un second point de référence (b) (figure 1 et 1c) à partir duquel le festonnage est poursuivi. La fraction de l'arc de festonnage réalisée à partir du second point de référence (b) est égale à celle réalisée jusqu'au premier point de référence (a) et symétrique par rapport à la bissectrice de l'angle de rotation.To border a fabric (for example a tablecloth, a bed sheet, a pillowcase, etc.) of scalloped bows, a scalloping machine is used provided with a patterned cam. A particular difficulty appears when one wishes to border aesthetically by such scalloped arcs, the corners of a fabric. The starting position of the cam and the length of the arcs must be chosen in such a way that at the end of the work, the end of the last arc aesthetically joins the start of the next scalloping arc after rotation of the fabric. Usually, the scalloping of the fabric is completed at a first point (a) (FIG. 1a) chosen in such a way that only half to three-quarters of the last arched pattern is produced. The festooner is then stopped and the fabric is turned (Figure 1b), usually 90 °, on the corner. The patterned cam is then repositioned by hand, more or less as judged, to a position which corresponds to a second reference point (b) (FIGS. 1 and 1c) from which the scalloping is continued. The fraction of the scalloping arc made from the second reference point (b) is equal to that made up to the first reference point (a) and symmetrical with respect to the bisector of the angle of rotation.

L'opération manuelle de positionnement de la came à dessin jusqu'au second point de référence (b) requiert de l'attention et prend du temps à l'utilisateur, d'autant plus que la came ne peut tourner que dans un sens. En plus, cette came est souvent difficile à atteindre à la main, car elle est située à un endroit peu accessible, le plus généralement.The manual operation of positioning the drawing cam to the second reference point (b) requires attention and takes time for the user, especially since the cam can only rotate in one direction. In addition, this cam is often difficult to reach by hand, because it is located in an inaccessible place, most generally.

Buts de l'inventionAims of the invention

L'invention a pour but de fournir une festonneuse facilitant le travail de l'utilisateur et plus précisément une festonneuse munie d'un dispositif qui permette de tourner, rapidement, automatiquement et avec précision la came à motif jusqu'à une position adéquate correspondant au second point de référence (b). Elle a également pour but de fournir un tel dispositif, simple et bon marché, qui permette, en fonction du motif et des dimensions du tissu, de choisir entre plusieurs positions adéquates correspondant à un point de référence (b) et donc d'élargir le nombre de possibilités de festonnage sur les coins du tissu.The object of the invention is to provide a festoon facilitating the work of the user and more specifically a festoon provided with a device which allows the pattern cam to be turned quickly, automatically and precisely to an appropriate position corresponding to the second reference point (b). It also aims to provide such a device, simple and inexpensive, which allows, depending on the pattern and dimensions of the fabric, to choose between several suitable positions corresponding to a reference point (b) and therefore to widen the number of scalloping possibilities on the corners of the fabric.

Objet de l'inventionSubject of the invention

L'invention a pour objet une festonneuse munie d'une came à motif pouvant être déplacée automatiquement d'une première à une seconde position correspondant aux points de référence (a) et (b). A cette fin, la festonneuse est munie d'un dispositif de positionnement de la came comprenant un mécanisme d'entraînement de cette came, comportant un moteur électrique pouvant lui transmettre un mouvement rotatif et un dispositif électronique pouvant mémoriser la position choisie de la came correspondant au point de référence (b), déclencher le fonctionnement du mécanisme d'entraînement, détecter à l'aide d'un senseur au moins un point de repère situé sur la came et arrêter le fonctionnement du mécanisme d'entraînement lorsque la position de la came coïncide avec la position mémorisée.The subject of the invention is a festooner provided with a patterned cam which can be automatically moved from a first to a second position corresponding to the reference points (a) and (b). To this end, the scallop is provided with a device for positioning the cam comprising a mechanism for driving this cam, comprising an electric motor which can transmit a rotary movement to it and an electronic device which can memorize the chosen position of the corresponding cam. at the reference point (b), initiate the operation of the drive mechanism, detect using a sensor at least one reference point located on the cam and stop the operation of the drive mechanism when the position of the cam coincides with the memorized position.

Avantageusement, la came à motif peut être déplacée vers plusieurs positions différentes correspondant à un point de référence (b) en fonction des besoins.Advantageously, the patterned cam can be moved to several different positions corresponding to a reference point (b) as required.

Le dispositif électronique comporte de préférence

  • - au moins un interrupteur de départ, telle qu'une pédale ou un interrupteur manuel,
  • - au moins un senseur électronique, de préférence à lecture optique,
  • - une unité centrale de traitement,
  • - un étage de puissance

le nombre d'interrupteurs de départ et le nombre de senseurs électroniques étant égaux entre eux.The electronic device preferably comprises
  • - at least one start switch, such as a pedal or a manual switch,
  • - at least one electronic sensor, preferably with optical reading,
  • - a central processing unit,
  • - a power stage

the number of flow switches and the number of electronic sensors being equal to each other.

Lorsqu'un interrupteur est enfoncé, le mécanisme d'entraînement est enclenché ce qui permet le déplacement de la came à partir d'une première position choisie librement par l'opérateur et correspondant au point de référence (a).When a switch is pressed, the drive mechanism is engaged which allows the movement of the cam from a first position freely chosen by the operator and corresponding to the reference point (a).

L'enfoncement d'un interrupteur de départ donné définit, éventuellement parmi plusieurs autres possibilités, la position de la came correspondant au point de référence (b). Cette position est mémorisée par l'unité centrale de traitement et est comparée avec la position détectée par le senseur correspondant à l'interrupteur déclenché.Pressing a given start switch defines, possibly among several other possibilities, the position of the cam corresponding to the reference point (b). This position is memorized by the central processing unit and is compared with the position detected by the sensor corresponding to the tripped switch.

Lorsque la position détectée coïncide avec la position choisie et mémorisée par l'unité centrale de traitement, l'arrêt du déplacement de la came s'opère.When the detected position coincides with the position selected and memorized by the central processing unit, the movement of the cam stops.

L'unité centrale de traitement transmet les signaux de déclenchement et d'arrêt au mécanisme d'entraînement de la came via l'étage de puissance.The central processing unit transmits the trigger and stop signals to the cam drive mechanism via the power stage this.

D'une manière classique, le mécanisme d'entraînement de la came à motif comporte un embrayage et une courroie dentée. Le moteur électrique peut également être placé dans l'axe de la came à motif. Avantageusement, le moteur peut être logé dans un boîtier anti-poussière. Le dispositif électronique peut comporter un circuit imprimé qui est, de préférence logé dans la tête de la festonneuse.Conventionally, the drive mechanism of the patterned cam comprises a clutch and a toothed belt. The electric motor can also be placed in the axis of the patterned cam. Advantageously, the motor can be housed in a dust-proof housing. The electronic device may include a printed circuit which is preferably housed in the head of the scallop.

Avantageusement, la festonneuse peut recevoir des cames à motifs différents, ce qui, combiné avec plusieurs paires de points de référence élargit considérablement la gamme des possibilités de festonnage.Advantageously, the festooner can receive cams with different patterns, which, combined with several pairs of reference points considerably widens the range of festooning possibilities.

Les interrupteurs de départ sont avantageusement montés en parallèle, de même que les senseurs optiques.The start switches are advantageously mounted in parallel, as are the optical sensors.

A chaque position finale choisie de la came correspond donc un interrupteur donné et un senseur donné.Each chosen final position of the cam therefore corresponds to a given switch and a given sensor.

Brève description des figuresBrief description of the figures

L'invention pourra être mieux comprise en se référant aux dessins ci-après qui illustrent une forme d'exécution préférée, et dans lesquels:

  • - la figure 1 montre trois étapes du festonnage d'un coin de tissu (respectivement figures 1 a, 1 b et 1 c);
  • - la figure 2 montre en perspective une festonneuse munie du dispositif de positionnement de l'invention;
  • - la figure 3 est une vue en détail (en perspective) de la came à motif actionnée par le dispositif de l'invention;
  • - la figure 4 est une vue schématique d'une unité de commande électronique du dispositif de l'invention.
The invention can be better understood by referring to the drawings below which illustrate a preferred embodiment, and in which:
  • - Figure 1 shows three stages of scalloping a corner of fabric (respectively Figures 1a, 1b and 1c);
  • - Figure 2 shows in perspective a scallop provided with the positioning device of the invention;
  • - Figure 3 is a detailed view (in perspective) of the pattern cam actuated by the device of the invention;
  • - Figure 4 is a schematic view of an electronic control unit of the device of the invention.

Description détaillée de l'inventionDetailed description of the invention

La figure 1 montre en 1 a, 1 et 1 c, les trois étapes du festonnage d'un coin de tissu. Dans l'exemple représenté, le festonnage est interrompu avant le coin alors qu'approximativement les trois quarts seulement du dernier motif arqué ont été réalisés, ce qui est représenté à la figure 1 a. Comme on le voit à la figure 1 b, le tissu est alors tourné de 90°.Figure 1 shows in 1 a, 1 and 1 c, the three stages of scalloping a corner of fabric. In the example shown, the scalloping is interrupted before the corner whereas only approximately three quarters of the last arched pattern has been produced, which is shown in FIG. 1 a. As seen in Figure 1b, the fabric is then rotated 90 °.

Suivant les techniques habituelles, la came à motif était amenée à la main jusqu'à un second point de référence. Le dispositif de l'invention est destiné à l'y amener automatiquement (figure 1 c). A partir de ce point, les trois derniers quarts de l'arc suivant sont réalisés.According to usual techniques, the patterned cam was brought by hand to a second reference point. The device of the invention is intended to bring it there automatically (FIG. 1 c). From this point, the last three quarters of the next arc are made.

La figure 2 montre une festonneuse 1 munie d'un dispositif de positionnement 3 suivant l'invention.FIG. 2 shows a scallop 1 provided with a positioning device 3 according to the invention.

Ce dispositif de positionnement 3 comporte une came à motif 5, laquelle est actionnée grâce à un moteur électrique à courant continu 7 qui engendre un mouvement rotatif et qui est équipé d'un mécanisme d'entraînement de la came 5 consistant en une courroie dentée 9 à laquelle il est relié grâce à un embrayage 11.This positioning device 3 comprises a patterned cam 5, which is actuated by means of a direct current electric motor 7 which generates a rotary movement and which is equipped with a cam drive mechanism 5 consisting of a toothed belt 9 to which it is connected by means of a clutch 11.

Lorsque la festonneuse 1 fonctionne, le mécanisme de transport de tissu 13 se trouve vers le bas, et l'embrayage 11 interrompt la liaison entre le moteur 7 et la courroie 9 qui fait tourner la came 5.When the scallop 1 is operating, the fabric transport mechanism 13 is located downwards, and the clutch 11 interrupts the connection between the motor 7 and the belt 9 which turns the cam 5.

Quand la festonneuse 1 a accompli le travail de festonnage représenté à la figure la, le tissu est tourné et la transmission du mouvement du moteur 7 à la came 5 est déclenchée grâce à l'enfoncement d'un interrupteur de départ 15. Le nombre de ces interrupteurs de départ 15 peut être variable en fonction des besoins, selon le nombre de points de référence de type (b) différents selon lesquels on souhaite que le dispositif de positionnement 3 fonctionne.When the festooner 1 has completed the festooning work represented in FIG. 1a, the fabric is turned and the transmission of the movement from the motor 7 to the cam 5 is triggered by depressing a start switch 15. The number of these start switches 15 can be variable as required, depending on the number of different type (b) reference points according to which it is desired that the positioning device 3 operates.

Les différentes positions de la came correspondant au point de référence (b) peuvent être mémorisées dans l'unité centrale de traitement 17 d'un dispositif de commande électronique modulaire en trois parties, schématisé à la figure 4, qui est apte à commander le fonctionnement du moteur 7 et de l'embrayage 11.The different positions of the cam corresponding to the reference point (b) can be stored in the central processing unit 17 of a modular electronic control device in three parts, shown diagrammatically in FIG. 4, which is able to control the operation motor 7 and clutch 11.

Les interrupteurs de départ (151 à 153) sont montés en parallèle. Ils sont représentés au nombre de deux à la figure 2 et au nombre de trois à la figure 4 où ils sont symbolisés par des rectangles.The flow switches (151 to 153) are connected in parallel. There are two of them in Figure 2 and three in Figure 4 where they are symbolized by rectangles.

Par position de la came correspondant au point de référence (b) mémorisé est prévu un senseur optique 19 qui détecte la position réelle de la came et transmet des données à l'unité centrale de traitement 17, laquelle établit la comparaison avec la position mémorisée. Il est à noter qu'un seul boitier de senseur 19 est représenté à la figure 2 comportant les deux senseurs 191 et 192. Ceux-ci sont symbolisés par des rectangles à la figure 4.By position of the cam corresponding to the stored reference point (b), an optical sensor 19 is provided which detects the actual position of the cam and transmits data to the central processing unit 17, which compares it with the stored position. It should be noted that a single sensor unit 19 is shown in FIG. 2 comprising the two sensors 191 and 192. These are symbolized by rectangles in FIG. 4.

Lorsque la came 5 a atteint la position souhaitée, la courroie 9 est désolidarisée du moteur 7 et la came 5 arrête sa course.When the cam 5 has reached the desired position, the belt 9 is detached from the motor 7 and the cam 5 stops its race.

Le dispositif électronique tel que représenté à la figure 4 est donc construit sur un schéma modulaire en trois parties. Dans la première, qui comporte les interrupteurs de départ 15 et les senseurs 19, les signaux de commande circulent grâce à un bus connecteur (non représenté) qui peut communiquer avec les senseurs 19 et les interrupteurs 15 grâce à une fiche standard à 15 pôles par l'intermédiaire d'un câble blindé.The electronic device as shown in Figure 4 is therefore built on a modular diagram in three parts. In the first, which includes the start switches 15 and the sensors 19, the control signals circulate by means of a connector bus (not shown) which can communicate with the sensors 19 and the switches 15 by means of a standard 15-pole plug by shielded cable.

Le circuit imprimé de la commande peut être monté à peu près partout. La place idéale est un espace sans huile, spécialement prévu dans la tête de la festonneuse. Le métal de la tête protège en principe convenablement des champs électriques perturbateurs. De plus grâce à cet emplacement, la longueur du câble peut être réduite au minimum.The control PCB can be mounted almost anywhere. The ideal place is a oil-free space, specially provided in the head of the festooner. The metal of the head in principle adequately protects from disturbing electric fields. In addition, thanks to this location, the cable length can be reduced to a minimum.

Une fois que les signaux transmis par le senseur 19 sélectionné ont été analysés par l'unité centrale de traitement 17, celle-ci envoie un signal de commande à un étage de puissance 21 qui agit sur l'embrayage 11 de manière que la courroie 9 ne tourne plus et que la came 5 arrête son mouvement.Once the signals transmitted by the selected sensor 19 have been analyzed by the central processing unit 17, the latter sends a control signal to a power stage 21 which acts on the clutch 11 so that the belt 9 no longer rotates and the cam 5 stops its movement.

La festonneuse 1 reprend alors son travail à partir du second point de référence (b) atteint. Le point de repère (b) sur la came (figure 2) est placé pour que la fraction du dernier motif arqué réalisé avant que le tissu ne soit tourné, soit égale et symétrique à la fraction réalisée après le positionnement automatique de la came 5.The festooner 1 then resumes its work from the second reference point (b) reached. The reference point (b) on the cam (Figure 2) is placed so that the fraction of the last arched pattern produced before the fabric is turned, is equal and symmetrical to the fraction produced after the automatic positioning of the cam 5.

L'invention n'est pas limitée à la description ci- dessus de la forme d'exécution décrite à titre d'illustration mais s'étend au cadre défini par les revendications.The invention is not limited to the above description of the embodiment described by way of illustration but extends to the framework defined by the claims.

Claims (10)

1. Festonneuse (1) munie d'une came à motif (5) qui peut être déplacée d'une première à une seconde position correspondant à un premier et à un second point de référence définis sur le tissu, caractérisée en ce qu'elle comporte un dispositif de positionnement (3) permettant le déplacement automatique de ladite came (5) de la première à la seconde position, ledit dispositif de positionnement (3) comprenant: - un mécanisme d'entraînement de la came (5) comportant un mécanisme de commande, de préférence un moteur électrique (7) pouvant transmettre un mouvement rotatif à ladite came (5) et - un dispositif électronique pouvant mémoriser la position choisie correspondant au second point de référence, déclencher le fonctionnement du mécanisme d'entraînement, détecter la position de la came (5) à l'aide d'un senseur (19) correspondant et arrêter le fonctionnement du mécanisme d'entraînement lorsque la position de la came (5) coïncide avec la position mémorisée. 1. Festooner (1) provided with a patterned cam (5) which can be moved from a first to a second position corresponding to a first and a second reference point defined on the fabric, characterized in that it comprises a positioning device (3) allowing the automatic displacement of said cam (5) from the first to the second position, said positioning device (3) comprising: a cam drive mechanism (5) comprising a control mechanism, preferably an electric motor (7) capable of transmitting a rotary movement to said cam (5) and - an electronic device capable of memorizing the chosen position corresponding to the second reference point, triggering the operation of the drive mechanism, detecting the position of the cam (5) using a corresponding sensor (19) and stopping the operation of the drive mechanism when the position of the cam (5) coincides with the memorized position. 2. Festonneuse suivant la revendication 1, caractérisée en ce que la came à motif (5) peut être déplacée vers plusieurs positions différentes correspondant au second point de référence.2. Festonneuse according to claim 1, characterized in that the patterned cam (5) can be moved to several different positions corresponding to the second reference point. 3. Festonneuse suivant l'une quelconque des revendications 1 et 2 caractérisée en ce que le dispositif électronique comporte: - au moins un interrupteur de départ (151, 152, 153), - au moins un senseur électronique (191, 192, 193), - une unité centrale de traitement (17), - un étage de puissance (21),
le nombre d'interrupteurs de départ (151, 152, 153) et le nombre de senseurs optiques (191, 192, 193) étant égaux entre eux.
3. Scallop machine according to either of Claims 1 and 2, characterized in that the electronic device comprises: - at least one start switch (151, 152, 153), - at least one electronic sensor (191, 192, 193), - a central processing unit (17), - a power stage (21),
the number of start switches (151, 152, 153) and the number of optical sensors (191, 192, 193) being equal to each other.
4. Festonneuse suivant l'une quelconque des revendications précédentes caractérisée en ce que le mécanisme d'entraînement de la came à motif (5) comporte un embrayage (11) et une courroie dentée (9).4. Festooner according to any one of the preceding claims, characterized in that the drive mechanism of the patterned cam (5) comprises a clutch (11) and a toothed belt (9). 5. Festonneuse suivant l'une quelconque des revendications 1 à 3, caractérisée en ce que le moteur électrique (7) est placé dans l'axe de la came à motif (5).5. Festonneuse according to any one of claims 1 to 3, characterized in that the electric motor (7) is placed in the axis of the patterned cam (5). 6. Festonneuse suivant l'une quelconque des revendications précédentes caractérisée en ce que le moteur (7) est logé dans un boîtier anti-poussière.6. Festonneuse according to any one of the preceding claims, characterized in that the motor (7) is housed in a dust-proof housing. 7. Festonneuse suivant l'une quelconque des revendications précédentes caractérisée en ce que le dispositif électronique comporte un circuit imprimé.7. Scallop machine according to any one of the preceding claims, characterized in that the electronic device comprises a printed circuit. 8. Festonneuse suivant la revendication 7 caractérisée en ce que ledit circuit imprimé est logé dans la tête de la festonneuse.8. Festonneuse according to claim 7 characterized in that said printed circuit is housed in the head of the festonneuse. 9. Festonneuse suivant l'une quelconque des revendications précédentes, caractérisée en ce qu'elle peut recevoir différentes cames en fonction des motifs voulus.9. Scallop according to any one of the preceding claims, characterized in that it can receive different cams depending on the desired patterns. 10. Festonneuse suivant l'une quelconque des revendication 3 à 9, caractérisée en ce que les interrupteurs de départ (151, 152, 153) sont montés en parallèle et en ce que les senseurs optiques (191, 192, 193) sont montés en parallèle.10. Festooner according to any one of claims 3 to 9, characterized in that the start switches (151, 152, 153) are mounted in parallel and in that the optical sensors (191, 192, 193) are mounted in parallel.
EP90870161A 1990-10-03 1990-10-03 Festoon-sewing machine with a device for automatically positioning a pattern-cam Withdrawn EP0478872A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP90870161A EP0478872A1 (en) 1990-10-03 1990-10-03 Festoon-sewing machine with a device for automatically positioning a pattern-cam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90870161A EP0478872A1 (en) 1990-10-03 1990-10-03 Festoon-sewing machine with a device for automatically positioning a pattern-cam

Publications (1)

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EP0478872A1 true EP0478872A1 (en) 1992-04-08

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EP90870161A Withdrawn EP0478872A1 (en) 1990-10-03 1990-10-03 Festoon-sewing machine with a device for automatically positioning a pattern-cam

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0610720A2 (en) * 1993-02-09 1994-08-17 MAIER-UNITAS GmbH Festoon-sewing machine
WO1996025543A1 (en) * 1995-02-17 1996-08-22 Rombold System Gmbh Festooning process and festooning machine
CN1804185B (en) * 2006-01-24 2011-04-20 浙江新杰克缝纫机有限公司 Servo drive mechanism of sewing machine
CN1804184B (en) * 2006-01-24 2011-04-20 浙江新杰克缝纫机有限公司 Servo drive device of lockstitch sewing machine
CN109629121A (en) * 2018-12-10 2019-04-16 杰克缝纫机股份有限公司 Sewing device control method, sewing device, controller and storage medium
CN112813586A (en) * 2019-11-18 2021-05-18 杰克缝纫机股份有限公司 Cloth motion detection method and device, sewing machine and computer equipment

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US4406238A (en) * 1980-05-23 1983-09-27 Janome Sewing Machine Co. Ltd. Sewing machine with cyclic pattern stitching device
LU85523A1 (en) * 1984-08-30 1986-03-11 Baratto S A Nv FESTONING MACHINE
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GB224527A (en) * 1923-11-05 1925-01-08 Singer Mfg Co Automatic embroidering machine
US1597369A (en) * 1924-06-04 1926-08-24 Durkoppwerke A G Sewing machine for making festoons
FR1306795A (en) * 1961-01-26 1962-10-19 Necchi Spa Improvements to control devices for performing sewing patterns with a sewing machine
FR2205073A5 (en) * 1972-10-30 1974-05-24 Godde Bedin Sewing machine for embroidery with movable stitching head - which is orientated automatically after each stitching operation by a pattern mechanism
US4331092A (en) * 1979-08-02 1982-05-25 Janome Sewing Machine Co., Ltd. Pattern cam positioning means in stopping device for sewing machines
US4406238A (en) * 1980-05-23 1983-09-27 Janome Sewing Machine Co. Ltd. Sewing machine with cyclic pattern stitching device
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LU85523A1 (en) * 1984-08-30 1986-03-11 Baratto S A Nv FESTONING MACHINE

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0610720A2 (en) * 1993-02-09 1994-08-17 MAIER-UNITAS GmbH Festoon-sewing machine
EP0610720A3 (en) * 1993-02-09 1994-12-21 Maier & Soehne Unitas Festoon-sewing machine.
US5555831A (en) * 1993-02-09 1996-09-17 Maier-Unitas Gmbh Festooning machine
WO1996025543A1 (en) * 1995-02-17 1996-08-22 Rombold System Gmbh Festooning process and festooning machine
CN1804185B (en) * 2006-01-24 2011-04-20 浙江新杰克缝纫机有限公司 Servo drive mechanism of sewing machine
CN1804184B (en) * 2006-01-24 2011-04-20 浙江新杰克缝纫机有限公司 Servo drive device of lockstitch sewing machine
CN109629121A (en) * 2018-12-10 2019-04-16 杰克缝纫机股份有限公司 Sewing device control method, sewing device, controller and storage medium
CN109629121B (en) * 2018-12-10 2020-12-29 杰克缝纫机股份有限公司 Sewing equipment control method, sewing equipment, controller and storage medium
CN112813586A (en) * 2019-11-18 2021-05-18 杰克缝纫机股份有限公司 Cloth motion detection method and device, sewing machine and computer equipment

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