EP0248715A1 - Apparatus for cutting straps encircling packages, particularly coils and packets of iron sheets - Google Patents

Apparatus for cutting straps encircling packages, particularly coils and packets of iron sheets Download PDF

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Publication number
EP0248715A1
EP0248715A1 EP87401198A EP87401198A EP0248715A1 EP 0248715 A1 EP0248715 A1 EP 0248715A1 EP 87401198 A EP87401198 A EP 87401198A EP 87401198 A EP87401198 A EP 87401198A EP 0248715 A1 EP0248715 A1 EP 0248715A1
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EP
European Patent Office
Prior art keywords
link
package
machine according
sectioning
heating
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP87401198A
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German (de)
French (fr)
Inventor
Jacques Benet
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B69/00—Unpacking of articles or materials, not otherwise provided for
    • B65B69/0025—Removing or cutting binding material, e.g. straps or bands

Definitions

  • the present invention relates to the sectioning of the links surrounding packages, in particular links, most often constituted by a steel strip, surrounding the coils and packets of thin sheets.
  • the current technique uses a sectioning of the link by a milling cutter rotating at very high speed which comes to mill the link.
  • the disadvantage of this known technique is that the position of the cutter relative to the surface of the package cannot be adjusted with the desired precision and that the milling operation of the link, in particular of a steel link, develops a quantity significant heat as well as numerous particles of molten steel which mark the surface of the surface layer of the packaged sheet, which results in insufficient cutting of the bond when the cutter is too far apart and, in all cases, by marking a large surface of said sheet, surface which must be discarded.
  • the link after sectioning, relaxes elastically and is likely to constitute a danger to the environment in addition to being difficult to handle because of its roughness and the cutting edges which it may have.
  • the object of the present invention is to remedy these drawbacks by proposing a machine capable of cutting the link without thermally marking, or-by projections of metal or molten material, the surface layer of the package tightened by said link.
  • Localized heating can be achieved by electrical resistance heating, the support members being constituted by two electrodes spaced along the transverse or longitudinal direction of the link, these electrodes ensuring both the immobilization of the two points of the link and the heating by resistance.
  • Localized heating can also be achieved by surface heating, the means ensuring surface localized heating being independent of the two support members ensuring the immobilization of the two points of the link and constituted by a heat generator with a focused thermal beam such as a micro-torch, a microwave generator or a laser beam, capable of providing localized thermal heating in the surface layer of the link.
  • a heat generator with a focused thermal beam such as a micro-torch, a microwave generator or a laser beam
  • the thermal deformation of the link between the two support members spaced apart longitudi- nally on the link creates a space used for the engagement of a mechanical shears.
  • the mechanical shear comprises two triangular blades, the points of which are engaged under the link from the two opposite edges, the shearing force cooperating with thermal expansion to separate the link from the upper surface of the package.
  • the machine comprises means j for gripping the link near the sectioning section and for bringing the gripped end, after sectioning, to a drive device evacuating the link to a storage container.
  • this drive device includes a means for shearing the link. elements of short length.
  • the means for grasping the link can, in the case of a link made of magnetic material, be constituted by a magnet or an electromagnet.
  • the means for gripping the link is preferably constituted by the clamp ensuring, during the sectioning, an elastic transverse compression of the link in the vicinity of the sectioning section .
  • the sectioning means and the link entry means are carried by a support coming above the parcel transport path, this support being animated by a movement of exploration of the parcel brought to the right of the sectioning station and of the link detection means are associated with the exploration movement of said support to detect the link during the exploration movement and to bring the sectioning and gripping means into the operating position relative to the link.
  • the link detection means immobilizes relatively to each other, when a link is detected, the support and the package and controls the start of an operating cycle of the machine.
  • the packages are brought to the sectioning station with the link in a plane perpendicular to the direction of movement of the package and, upon detection of the link, the package is subjected to a rotation of 90 ° around a vertical axis, the arm constituting the support being animated by an exploration movement perpendicular to the direction of delivery of the packages, the amplitude of which covers at least the transverse zone in which the link is likely to be located.
  • the support After detection of a link, performs an exploration of the surfaces of the package in a plane perpendicular to the direction tion of this first link, the sectioning operation can in this case be carried out on two or three links per package.
  • the machine comprises a base 1 surmounted by a column 2, the height of which is adjustable by means of a lifting device, not shown, the barrel comprising a part 3 of adjustable length.
  • a lifting device not shown
  • the barrel comprising a part 3 of adjustable length.
  • On the top of the column 2 is mounted movable, at least in the direction parallel to the plane of the figure, an arm 4 which can also be movable perpendicular to this plane along a straight path or in an arc.
  • a head 5 At the end of the arm 4 is formed a head 5 in which are mounted a device 6 for detecting the presence opposite a steel link 7, a device 9 for gripping the link, a system of electrodes heater 10 and a control and power supply unit 11 subject to a program and to the detection of a link by the detector device 6.
  • the reference 12 designates a link recovery device which grasps its end and transports it to the inlet 13 of a conveyor channel 14 into which it is swallowed by rollers presser drive 15.
  • the link At the end of the conveyor channel 14, the link is sectioned, by a shear shown diagrammatically at 16, into elements of short length which fall, by a chute 17 and a fall 18, into a basket 19.
  • the device 9 for entering the link and the system of heating electrodes 10 may vary according to the nature of the material constituting the link and according to the section.
  • FIG. 2 illustrates an electrode device for cutting a steel link 7 of relatively small thickness and having a width of around twenty millimeters encircling a coil of a strip of thin sheet metal of which only the peripheral layers 20 are shown.
  • the electrodes 10 each include a stud 21 which is pressed under pressure on the external face of the link 7, the two studs being one opposite the other and separated by an air gap 22.
  • the link 7 is heated by internal resistance and is deformed by bulging, creating a clearance between its central part and the layers 20 of the coil. Therefore the surface layers 20 only undergo a reduced temperature rise while the metal of the link 7 melts in the section between the electrodes.
  • the end of the link which was held by the device 9 for capturing the link constituted for example by a magnet, is gripped by the recovery device 12 and driven towards the inlet 13 of the device for removing the link.
  • the steel link 7 has a section which is too large to be sectioned by simple fusion. Then applied to the outer surface of the link, at two points slightly spaced along its length, two electrodes 23 which are pressurized. By energizing the electrodes 23, the link portion 24 located between them is heated by resistance and expands by lifting from the surface layer 20 of the package. Two triangular shear blades 25 are then engaged by their points between the part 24 and the surface layer 20 and they are brought together. to cut the link. The shearing operation is facilitated by the greater malleability of the heated link which is stressed at the time of separation. the thermal expansion effect and the wedge effect of the blades 25.

Abstract

Machine in which cutting of the strap (7) is effected by localised heating, the deformation of the strap by the said heating being used to separate the lower surface of the strap from the upper surface (20) of the package held by the said strap, it being possible for this localised heating to be produced by electrical heating using a resistance element, two electrodes (23), spaced in the transverse or longitudinal direction of the strap (7), being applied to the upper surface of the said strap which bends through thermal expansion between the bearing points of the two electrodes. <IMAGE>

Description

La présente invention concerne le sectionnement des liens entourant des colis notamment des liens, constitués le plus souvent par une bande d'acier, entourant les bobines et paquets de tôles minces.The present invention relates to the sectioning of the links surrounding packages, in particular links, most often constituted by a steel strip, surrounding the coils and packets of thin sheets.

La technique actuelle utilise un sectionnement du lien par une fraise tournant à très grande vitesse qui vient fraiser le lien. L'inconvénient de cette technique connue est que la position de la fraise par rapport à la surface du paquet ne peut être réglée avec la précision souhaitable et que l'opération de fraisage du lien, notamment d'un lien en acier, développe une quantité de chaleur importante ainsi que de nombreuses particules d'acier en fusion qui marquent la surface de la couche superficielle de la tôle empaquetée, ce qui se traduit par un sectionnement insuffisant du lien lorsque la fraise est trop écartée et, dans tous les cas, par un marquage d'une surface importante de ladite tôle, surface qui doit être mise au rebut. En outre le lien, après sectionnement, se détend élastiquement et est susceptible de constituer un danger pour l'environnement outre qu'il est difficile à manipuler en raison de ses aspérités et des arêtes coupantes qu'il peut présenter.The current technique uses a sectioning of the link by a milling cutter rotating at very high speed which comes to mill the link. The disadvantage of this known technique is that the position of the cutter relative to the surface of the package cannot be adjusted with the desired precision and that the milling operation of the link, in particular of a steel link, develops a quantity significant heat as well as numerous particles of molten steel which mark the surface of the surface layer of the packaged sheet, which results in insufficient cutting of the bond when the cutter is too far apart and, in all cases, by marking a large surface of said sheet, surface which must be discarded. In addition, the link, after sectioning, relaxes elastically and is likely to constitute a danger to the environment in addition to being difficult to handle because of its roughness and the cutting edges which it may have.

Dans FR-A-2.336.305 on a proposé de couper des liens constitués par des fils métalliques entourant notamment des balles de pâtes à papier en appliquant un ensemble d'électrodes contre le ou les fils, électrodes entre lesquelles on fait passer un courant électrique pour fondre les fils. Dans ce document il est dit que la chaleur de fusion serait susceptible d'enflammer la substance combustible emballée mais que ce risque était purement théorique en raison de la haute teneur en humidité de la pâte à papier. Il est par contre évident qu'avec les liens métalliques entourant les bobines et paquets de tôles, le procédé décrit dans FR-A-2.336.305 aboutirait au soudage du lien sur la tôle superficielle et au moins à des dépôts métalliques importants sur cette tôle.In FR-A-2,336,305, it has been proposed to cut links constituted by metallic wires surrounding in particular balls of paper pulp by applying a set of electrodes against the wire or wires, electrodes between which an electric current is passed to melt the wires. In this document, it is said that the heat of fusion is likely to ignite the packaged combustible substance but that this risk was purely theoretical due to the high moisture content of the paper pulp. It is however obvious that with the metal links surrounding the coils and packets of sheets, the process described in FR-A-2,336,305 would result in the welding of the link on the surface sheet and at least in significant metal deposits on this sheet .

La présente invention a pour but de remédier à ces inconvénients en proposant une machine susceptible de sectionner le lien sans marquer thermiquement, ou-par des projections de métal ou de matière en fusion, la couche superficielle du colis serré par ledit lien.The object of the present invention is to remedy these drawbacks by proposing a machine capable of cutting the link without thermally marking, or-by projections of metal or molten material, the surface layer of the package tightened by said link.

Elle a en conséquence pour objet une machine pour le sectionnement des liens entourant des colis, notamment des bobines et paquets de tôles, orésentant une surface rigide s'opposant- à l'enfoncement du lien dans la surface du colis, par chauffage localisé du lien pouvant éventuellement provoquer son sectionnement par fusion, cette machine comportant au moins deux organes d'appui espacés susceptibles d'immobiliser deux points du lien disposés de part et d'autre du point de sectionnement, par serrage du lien entre ces organes et la surface du colis, avec des moyens pour chauffer localement le lien entre ces deux points de façon à écarter la surface inférieure du lien de la surface supérieure du colis assujetti par ledit lien.It therefore relates to a machine for severing the links surrounding packages, in particular coils and packets of sheets, presenting a rigid surface opposing- the insertion of the link into the surface of the package, by localized heating of the link possibly possibly causing its sectioning by fusion, this machine comprising at least two spaced-apart support members capable of immobilizing two points of the link arranged on either side of the sectioning point, by tightening the link between these members and the surface of the package, with means for locally heating the link between these two points so as to separate the lower surface of the link from the upper surface of the package subject to said link.

Le chauffage localisé peut être réalisé par chauffage électrique par résistance, les organes d'appui étant constitués par deux électrodes espacées selon la direction transversale ou longitudinale du lien, ces électrodes assurant à la fois l'immobilisation des deux points du lien et le chauffage par résistance.Localized heating can be achieved by electrical resistance heating, the support members being constituted by two electrodes spaced along the transverse or longitudinal direction of the link, these electrodes ensuring both the immobilization of the two points of the link and the heating by resistance.

Le chauffage localisé peut également être réalisé par un chauffage superficiel, les moyens assurant un chauffage localisé superficiel étant indépendants des deux organes d'appui assurant l'immobilisation des deux points du lien et constitués par un générateur de chaleur à faisceau thermique focalisé tel qu'un micro-chalumeau, un générateur de micro-ondes ou un faisceau laser, susceptible de réaliser un chauffage thermique localisé dans la couche superficielle du lien.Localized heating can also be achieved by surface heating, the means ensuring surface localized heating being independent of the two support members ensuring the immobilization of the two points of the link and constituted by a heat generator with a focused thermal beam such as a micro-torch, a microwave generator or a laser beam, capable of providing localized thermal heating in the surface layer of the link.

Lorsque le lien présente une section importante rendant difficile son sectionnement par simple fusion, la déformation thermique du lien entre les deux organes d'appui espacés longitudi-, nalement sur le lien crée un espace utilisé pour l'engagement d'une cisaille mécanique. De préférence, la cisaille mécanique comporte deux lames triangulaires dont les pointes sont engagées sous le lien depuis les deux bords opposés, l'effort de cisaillement coopérant avec la dilatation thermique pour écarter le lien de la surface supérieure du paquet.When the link has a large section making it difficult to cut it by simple fusion, the thermal deformation of the link between the two support members spaced apart longitudi- nally on the link creates a space used for the engagement of a mechanical shears. Preferably, the mechanical shear comprises two triangular blades, the points of which are engaged under the link from the two opposite edges, the shearing force cooperating with thermal expansion to separate the link from the upper surface of the package.

Selon une autre caractéristique la machine comporte un moyen j pour saisir le lien à proximité de la section de sectionnement et pour amener l'extrémité saisie, après sectionnement, à un dispositif d'entraînement évacuant le lien vers un conteneur de stockage. Selon une autre caractéristique ce dispositif d'entraînement comporte un moyen pour cisailler le lien-en éléments de faible longueur.According to another characteristic, the machine comprises means j for gripping the link near the sectioning section and for bringing the gripped end, after sectioning, to a drive device evacuating the link to a storage container. According to another characteristic, this drive device includes a means for shearing the link. elements of short length.

Le moyen pour saisir le lien peut, dans le cas d'un lien en matériau magnétique, être constitué par un aimant ou un électroaimant. Dans le cas d'un lien en un matériau non magnétique, notamment en matière plastique, le moyen pour saisir le lien est de préférence constitué par la pince assurant, lors du sectionnement, une compression transversale élastique du lien au voisinage de la section de sectionnement.The means for grasping the link can, in the case of a link made of magnetic material, be constituted by a magnet or an electromagnet. In the case of a link made of a non-magnetic material, in particular plastic, the means for gripping the link is preferably constituted by the clamp ensuring, during the sectioning, an elastic transverse compression of the link in the vicinity of the sectioning section .

Dans la machine conforme à l'invention les moyens de sectionnement et le moyen de saisie du lien sont portés par un support venant au-dessus de la voie de transport des colis, ce support étant animé d'un mouvement d'exploration du colis amené au droit du poste de sectionnement et des moyens de détection du lien sont associés au mouvement d'exploration dudit support pour détecter le lien lors du mouvement d'exploration et amener les moyens de sectionnement et de saisie en position de fonctionnement par rapport au lien.In the machine according to the invention, the sectioning means and the link entry means are carried by a support coming above the parcel transport path, this support being animated by a movement of exploration of the parcel brought to the right of the sectioning station and of the link detection means are associated with the exploration movement of said support to detect the link during the exploration movement and to bring the sectioning and gripping means into the operating position relative to the link.

Selon une autre caractéristique le moyen de détection du lien immobilise relativement l'un par rapport à l'autre, lors de la détection d'un lien, le support et le colis et commande le démarrage d'un cycle de fonctionnement de la machine.According to another characteristic, the link detection means immobilizes relatively to each other, when a link is detected, the support and the package and controls the start of an operating cycle of the machine.

Selon un mode de réalisation préférentiel les colis sont amenés au poste de sectionnement avec le lien dans un plan perpendiculaire à la direction de déplacement du colis et, à la détection du lien, le colis est soumis à une rotation de 90° autour d'un axe vertical, le bras constituant le support étant animé d'un mouvement d'exploration perpendiculaire à la direction d'amenée des colis dont l'amplitude couvre au moins la zone transversale dans laquelle est susceptible de se trouver le lien.According to a preferred embodiment, the packages are brought to the sectioning station with the link in a plane perpendicular to the direction of movement of the package and, upon detection of the link, the package is subjected to a rotation of 90 ° around a vertical axis, the arm constituting the support being animated by an exploration movement perpendicular to the direction of delivery of the packages, the amplitude of which covers at least the transverse zone in which the link is likely to be located.

Dans le cas de liens situés dans au moins deux plans, le support, après détection d'un lien, effectue une exploration des surfaces du colis dans un plan perpendiculaire à la direction de ce premier lien, l'opération de sectionnement pouvant dans ce cas être effectuée sur deux ou trois liens par colis.In the case of links located in at least two planes, the support, after detection of a link, performs an exploration of the surfaces of the package in a plane perpendicular to the direction tion of this first link, the sectioning operation can in this case be carried out on two or three links per package.

L'invention sera mieux comprise à la lecture de la description détaillée de divers modes de réalisation de la machine objet de l'invention ou de ses parties, faite ci-après avec référence aux dessins ci-annexés dans lesquels:

  • La figure 1 est une vue en élévation latérale schématique de la machine conforme à l'invention;
  • la figure 2 est une vue en élévation, transversalement au lien à couper de deux électrodes
  • de sectionnement par chauffage par résistance électrique; la figure 3 est une vue en coupe selon la direction longitudinale du lien d'un lien coupé par chauffage et cisaillement combinés et la figure 4 est une vue en coupe par IV-IV de figure 3.
The invention will be better understood on reading the detailed description of various embodiments of the machine which is the subject of the invention or of its parts, given below with reference to the attached drawings in which:
  • Figure 1 is a schematic side elevational view of the machine according to the invention;
  • Figure 2 is an elevational view, transversely to the link to be cut of two electrodes
  • sectioning by electrical resistance heating; FIG. 3 is a sectional view in the longitudinal direction of the link of a link cut by combined heating and shearing and FIG. 4 is a sectional view by IV-IV of FIG. 3.

La machine comporte un socle 1 surmonté par une colonne 2 dont la hauteur est réglable au moyen d'un dispositif élévateur non représenté, le fût comportant une partie 3 de longueur réglable. Sur le sommet de la colonne 2 est monté mobile, au moins selon la direction parallèle au plan de la figure, un bras 4 qui peut également être mobile perpendiculairement à ce plan selon une trajectoire rectiligne ou en arc de cercle.The machine comprises a base 1 surmounted by a column 2, the height of which is adjustable by means of a lifting device, not shown, the barrel comprising a part 3 of adjustable length. On the top of the column 2 is mounted movable, at least in the direction parallel to the plane of the figure, an arm 4 which can also be movable perpendicular to this plane along a straight path or in an arc.

A l'extrémité du bras 4 est formée une tête 5 dans laquelle sont montés un dispositif détecteur 6 de la présence en vis- à-vis d'un lien en acier 7, un dispositif 9 de saisie du lien, un système d'électrodes de chauffage 10 et un ensemble de commande et d'alimentation 11 assujetti à un programme et à la détection d'un lien par le dispositif détecteur 6. La référence 12 désigne un dispositif de reprise du lien qui saisit son extrémité et la transporte à l'entrée 13 d'un canal transporteur 14 dans lequel il est avalé par des rouleaux d'entrainement presseurs 15. A l'extrémité du canal transporteur 14 le lien est sectionné, par une cisaille schématisée en 16, en éléments de faible longueur qui tombent, par une goulotte 17 et une chute 18, dans un panier 19.At the end of the arm 4 is formed a head 5 in which are mounted a device 6 for detecting the presence opposite a steel link 7, a device 9 for gripping the link, a system of electrodes heater 10 and a control and power supply unit 11 subject to a program and to the detection of a link by the detector device 6. The reference 12 designates a link recovery device which grasps its end and transports it to the inlet 13 of a conveyor channel 14 into which it is swallowed by rollers presser drive 15. At the end of the conveyor channel 14, the link is sectioned, by a shear shown diagrammatically at 16, into elements of short length which fall, by a chute 17 and a fall 18, into a basket 19.

Le dispositif 9 de saisie du lien-et le système d'électrodes de chauffage 10 peuvent varier selon la nature du matériau constituant le lien et selon la section.The device 9 for entering the link and the system of heating electrodes 10 may vary according to the nature of the material constituting the link and according to the section.

La figure 2 illustre un dispositif d'électrodes pour sectionner un lien en acier 7 d'épaisseur relativement faible et ayant une largeur d'une vingtaine de millimètres cerclant une bobine d'une bande de tôle mince dont seules les couches périphériques 20 sont représentées. Les électrodes 10 comportent chacune un plot 21 qui est mis en appui sous pression sur la face externe du lien 7, les deux plots étant l'un en face de l'autre et séparés par un entrefer 22. Lors de la mise sous tension, le lien 7 est chauffé par résistance interne et se déforme par bombement en créant un jeu entre sa partie centrale et les couches 20 de la bobine. De ce fait les couches superficielles 20 ne subissent qu'une élévation de température réduite alors que le métal du lien 7 fond dans la section entre les électrodes. L'extrémité du lien qui était maintenue par le dispositif 9 de saisie du lien constitué par exemple par un aimant,est saisie par le dispositif de reprise 12 et entraînée vers l'entrée 13 du dispositif d'évacuation du lien.FIG. 2 illustrates an electrode device for cutting a steel link 7 of relatively small thickness and having a width of around twenty millimeters encircling a coil of a strip of thin sheet metal of which only the peripheral layers 20 are shown. The electrodes 10 each include a stud 21 which is pressed under pressure on the external face of the link 7, the two studs being one opposite the other and separated by an air gap 22. When power is applied, the link 7 is heated by internal resistance and is deformed by bulging, creating a clearance between its central part and the layers 20 of the coil. Therefore the surface layers 20 only undergo a reduced temperature rise while the metal of the link 7 melts in the section between the electrodes. The end of the link which was held by the device 9 for capturing the link, constituted for example by a magnet, is gripped by the recovery device 12 and driven towards the inlet 13 of the device for removing the link.

Dans le cas des figures 3 et 4, le lien 7 en acier a une section trop importante pour être sectionné par simple fusion. On applique alors sur la surface extérieure du lien, en deux points légèrement espacés selon sa longueur, deux électrodes 23 qui sont mises en pression. Par mise sous tension des électrodes 23, la partie de lien 24 située entre celles-ci est chauffée par résistance et se dilate en se soulevant de la couche superficielle 20 du paquet. Deux lames de cisaille triangulaires 25 sont alors engagées par leurs pointes entre la partie 24 et la couche superficielle 20 et elles sont rapprochées pour cisailler le lien. L'opération de cisaillement est facilitée par la plus grande malléabilité du lien chauffé qui se trouve sollicité à l'écartement à la fois par . l'effet de dilatation thermique et par l'effet de coin des lames 25.In the case of FIGS. 3 and 4, the steel link 7 has a section which is too large to be sectioned by simple fusion. Then applied to the outer surface of the link, at two points slightly spaced along its length, two electrodes 23 which are pressurized. By energizing the electrodes 23, the link portion 24 located between them is heated by resistance and expands by lifting from the surface layer 20 of the package. Two triangular shear blades 25 are then engaged by their points between the part 24 and the surface layer 20 and they are brought together. to cut the link. The shearing operation is facilitated by the greater malleability of the heated link which is stressed at the time of separation. the thermal expansion effect and the wedge effect of the blades 25.

Claims (9)

1. Machine pour le sectionnement des liens entourant des colis, notamment des bobines et paquets de tôles, présentant une surface rigide s'opposant à l'enfoncement du lien dans la surface du colis, par chauffage localisé du lien pouvant éventuellement provoquer son sectionnement par fusion,
caractérisée en ce qu'elle comporte au moins deux organes d'appui espacés susceptibles d'immobiliser deux points du lien disposés .de part et d'autre du point de sectionnements par serrage du lien entre ces organes et la surface du colis,avec des moyens pour chauffer localement le lien entre ces deux points de façon à écarter la surface inférieure du lien de la surface supérieure (20) du colis assujetti par ledit lien.1. Machine for severing the links surrounding packages, in particular coils and packets of sheets, having a rigid surface opposing the insertion of the link into the surface of the package, by localized heating of the link which may possibly cause its severing by fusion,
characterized in that it comprises at least two spaced apart support members capable of immobilizing two points of the link arranged on either side of the sectioning point by tightening the link between these members and the surface of the package, with means for locally heating the link between these two points so as to separate the lower surface of the link from the upper surface (20) of the package subject to said link. 2. Machine selon la revendication 1,
caractérisée en ce que les organes d'appui sont constitués par deux électrodes (10-21-23) espacées selon la direction transversale (21) ou longitudinale (23) du lien (7), ces électrodes assurant à la fois l'immobilisation des deux points du lien et le chauffage par résistance.2. Machine according to claim 1,
characterized in that the support members consist of two electrodes (10-21-23) spaced apart in the transverse (21) or longitudinal (23) direction of the link (7), these electrodes ensuring both the immobilization of the two points of the link and resistance heating. 3. Machine selon la revendication 1,
caractérisée en ce que les moyens assurant un chauffage localisé superficiel sont indépendants des deux organes d'appui assurant l'immobilisation des deux points du lien et sont constitués par un générateur de chaleur à faisceau thermique focalisé tel qu'un micro-chalumeau, un générateur de micro-ondes ou un faisceau laser, susceptible de réaliser un chauffage thermique localisé dans la couche.superficielle du lien.3. Machine according to claim 1,
characterized in that the means ensuring surface localized heating are independent of the two support members ensuring the immobilization of the two points of the link and are constituted by a heat generator with focused thermal beam such as a micro-torch, a generator microwave or laser beam, capable of providing localized thermal heating in the surface layer of the bond. 4. Machine selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle comporte de plus une cisaille mécanique (25) agissant transversalement au lien entre les deux organes d'appui (23).4. Machine according to any one of claims 1 to 3, characterized in that it further comprises a mechanical shears (25) acting transversely to the link between the two support members (23). 5. Machine selon la revendication 4,
caractérisée en ce que la cisaille mécanique comporte deux lames triangulaires (25) dont les pointes sont engagées sous le lien depuis les deux bords opposés, l'effort de cisaillement coopérant avec la dilatation thermique pour écarter le lien de la surface supérieure du paquet.5. Machine according to claim 4,
characterized in that the mechanical shear comprises two triangular blades (25) whose points are engaged under the link from the two opposite edges, the shearing force cooperating with thermal expansion to separate the link from the upper surface of the package. 6. Machine selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'elle comporte un moyen (9-12-26) pour saisir le lien ( 7.) à proximité de la section de sectionnement et pour amener l'extrémité saisie, après sectionnement, à un dispositif d'entraînement (13,.14, 15) évacuant le lien vers un conteneur (19) de stockage.6. Machine according to any one of claims 1 to 5, characterized in that it comprises means (9-12-26) for grasping the link (7.) near the sectioning section and for bringing the end gripped, after cutting, to a drive device (13, .14, 15) evacuating the link to a storage container (19). 7. Une machine selon la revendication 6,
caractérisée en ce que le dispositif d'entraînement (13 à 15) comporte un moyen (25) pour cisailler le lien ( 7 ) en éléments de faible longueur.7. A machine according to claim 6,
characterized in that the drive device (13 to 15) comprises means (25) for shearing the link (7) into elements of short length. 8. Machine selon l'une quelconque des revendications 1 à 7, caractérisée en ce que les moyens de.sectionnement.(10) et le moyen de saisie (9 - 12) du lien sont portés par un support (2-4) venant au-dessus de la voie de transport des colis, ce support étant animé d'un mouvement d'exploration du colis amené au droit du poste de sectionnement et des moyens (6) de détection du lien sont associés au mouvement d'exploration dudit support pour détecter le lien lors du mouvement d'exploration et amener les moyens de sectionnement (10) et de saisie (9-12) en position de fonctionnement par rapport au lien.8. Machine according to any one of claims 1 to 7, characterized in that the de.sectionnement means (10) and the gripping means (9 - 12) of the link are carried by a support (2-4) coming above the parcel transport path, this support being animated by a movement of exploration of the package brought to the right of the sectioning station and means (6) for detecting the link are associated with the movement of exploration of said support to detect the link during the exploration movement and bring the sectioning (10) and gripping (9-12) means in the operating position relative to the link. 9. Machine selon l'une quelconque des revendications 1 à 8, caractérisée en ce que les colis sont amenés au poste de sectionnement avec le lien 7.) dans un plan perpendiculaire à la direction de déplacement du colis et, à la détection du lien, le colis est soumis à une rotation de 90° autour d'un axe vertical, le bras (4) constituant le support étant animé d'un mouvement d'exploration perpendiculaire à la direction d'amenée des colis dont l'amplitude couvre au moins la zone transversale dans laquelle est susceptible de se trouver le lien ( 7 ).9. Machine according to any one of claims 1 to 8, characterized in that the packages are brought to the sectioning station with the link 7.) in a plane perpendicular to the direction of movement of the package and, upon detection of the link , the package is subjected to a 90 ° rotation around a vertical axis, the arm (4) constituting the support being animated by an exploration movement perpendicular to the direction of delivery of the packages whose amplitude covers the minus the transverse area in which the link is likely to be found (7).
EP87401198A 1986-05-28 1987-05-27 Apparatus for cutting straps encircling packages, particularly coils and packets of iron sheets Withdrawn EP0248715A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8607666A FR2599291A1 (en) 1986-05-28 1986-05-28 MACHINE FOR THE SEALING OF LINKS SURROUNDING PARCELS INCLUDING COILS AND PACKETS OF SHEETS
FR8607666 1986-05-28

Publications (1)

Publication Number Publication Date
EP0248715A1 true EP0248715A1 (en) 1987-12-09

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EP87401198A Withdrawn EP0248715A1 (en) 1986-05-28 1987-05-27 Apparatus for cutting straps encircling packages, particularly coils and packets of iron sheets

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EP (1) EP0248715A1 (en)
FR (1) FR2599291A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU580208B2 (en) * 1986-04-03 1989-01-05 Hokkai Can Co. Ltd. Method of and apparatus for removing tying band
US4995784A (en) * 1988-06-29 1991-02-26 Vega Automation Process for breaking and removing a tie surrounding a bundle
US5156516A (en) * 1988-06-29 1992-10-20 Vega Automation Device for breaking and removing a tie surrounding a bundle
US8367969B2 (en) 2008-11-18 2013-02-05 Air Liquide Industrial U.S. Lp Support table frame for high speed laser blanking
US8492677B2 (en) 2008-11-19 2013-07-23 Air Liquid Industrial U.S. L.P. Process for laser cutting a metal plate
WO2018013030A1 (en) * 2016-07-13 2018-01-18 Sund Birsta Ab Method and apparatus for releasing a binding element in the form of a metallic strap from a sheet metal roll
EP3578472A3 (en) * 2018-06-06 2020-03-11 ALS Automatic Logistic Solutions GmbH Cutting head and cutting machine with a cutting head

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1139065A (en) * 1965-03-26 1969-01-08 United Eng Foundry Co Apparatus for removing a tightly encircling band from around the periphery of a coil of material
FR2336305A1 (en) * 1975-12-23 1977-07-22 Munkedals Ab Paper bale binding electrical cutter - melts metal binding locally between double contacting rollers and has sprinklers to protect bales
FR2492704A1 (en) * 1980-10-23 1982-04-30 Raskin Sa CUTTING MACHINE OF SHEET MATERIAL

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1139065A (en) * 1965-03-26 1969-01-08 United Eng Foundry Co Apparatus for removing a tightly encircling band from around the periphery of a coil of material
FR2336305A1 (en) * 1975-12-23 1977-07-22 Munkedals Ab Paper bale binding electrical cutter - melts metal binding locally between double contacting rollers and has sprinklers to protect bales
FR2492704A1 (en) * 1980-10-23 1982-04-30 Raskin Sa CUTTING MACHINE OF SHEET MATERIAL

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU580208B2 (en) * 1986-04-03 1989-01-05 Hokkai Can Co. Ltd. Method of and apparatus for removing tying band
US4995784A (en) * 1988-06-29 1991-02-26 Vega Automation Process for breaking and removing a tie surrounding a bundle
US5156516A (en) * 1988-06-29 1992-10-20 Vega Automation Device for breaking and removing a tie surrounding a bundle
US8367969B2 (en) 2008-11-18 2013-02-05 Air Liquide Industrial U.S. Lp Support table frame for high speed laser blanking
US8492677B2 (en) 2008-11-19 2013-07-23 Air Liquid Industrial U.S. L.P. Process for laser cutting a metal plate
WO2018013030A1 (en) * 2016-07-13 2018-01-18 Sund Birsta Ab Method and apparatus for releasing a binding element in the form of a metallic strap from a sheet metal roll
CN109476393A (en) * 2016-07-13 2019-03-15 瑞典森德斯有限公司 The method and apparatus that the bundle part of metal band forms is unlocked from sheet metal coil
EP3484777A4 (en) * 2016-07-13 2020-03-18 Sund Birsta AB Method and apparatus for releasing a binding element in the form of a metallic strap from a sheet metal roll
EP3578472A3 (en) * 2018-06-06 2020-03-11 ALS Automatic Logistic Solutions GmbH Cutting head and cutting machine with a cutting head

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