EP0167469B1 - Device for heat-sealing and cutting at least a top corner of a bag of synthetic material - Google Patents

Device for heat-sealing and cutting at least a top corner of a bag of synthetic material Download PDF

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Publication number
EP0167469B1
EP0167469B1 EP85440045A EP85440045A EP0167469B1 EP 0167469 B1 EP0167469 B1 EP 0167469B1 EP 85440045 A EP85440045 A EP 85440045A EP 85440045 A EP85440045 A EP 85440045A EP 0167469 B1 EP0167469 B1 EP 0167469B1
Authority
EP
European Patent Office
Prior art keywords
bascule
cushion
cushions
chute
jaw
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
Application number
EP85440045A
Other languages
German (de)
French (fr)
Other versions
EP0167469A1 (en
Inventor
Georges Brie
Michel Cazes
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.)
Societe Generale des Eaux Minerales de Vittel SA
Original Assignee
Societe Generale des Eaux Minerales de Vittel SA
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
Priority claimed from FR8410094A external-priority patent/FR2566321B1/en
Priority claimed from FR858500547A external-priority patent/FR2576001B2/en
Application filed by Societe Generale des Eaux Minerales de Vittel SA filed Critical Societe Generale des Eaux Minerales de Vittel SA
Priority to AT85440045T priority Critical patent/ATE38191T1/en
Publication of EP0167469A1 publication Critical patent/EP0167469A1/en
Application granted granted Critical
Publication of EP0167469B1 publication Critical patent/EP0167469B1/en
Expired legal-status Critical Current

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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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/24—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for shaping or reshaping completed packages
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S493/00—Manufacturing container or tube from paper; or other manufacturing from a sheet or web
    • Y10S493/916—Pliable container
    • Y10S493/936—Square bottom

Definitions

  • the subject of the present invention is a device for welding and cutting at least one horn of a plastic bag, of the type obtained from a cushion filled with liquid, device in which the bag is placed on a flat surface in a compression assembly ensuring its positioning and its maintenance, said horn being welded by a welding jaw and cut out.
  • the products thus obtained are generally in the form of sachets having a flat base and provided at their upper part with two horns or corners.
  • patent FR-A-1 332 651 describes a shaping device in which the horns of the cushions are folded over the body of the latter and glued later. There is therefore no cutting and this requires the folding and gluing phase.
  • patent FR-A-1 259 662 describes a welding and cutting device according to the preamble of claim 1, but of complex structure and unreliable in practice.
  • the object of the present invention is to propose a device for obtaining this result.
  • the two lower corners will have been previously welded and cut to give stability to the bag.
  • the device further comprises a device for supplying and supplying cushions of flexible synthetic material filled with liquid upstream of an assembly for shaping said cushions into individual sachets each provided with a handle, said cushions being brought through a chute to a conveyor belt supporting cages integral in translation with said belt, each cage having to receive a cushion for its final conformation, and in that it comprises a share a rocker at the end of the chute, said rocker successively receiving each cushion coming from the chute and being tilted, to release the cushion which it supports, during the passage of each cage of the conveyor belt vertically over the rocker , and on the other hand a set allowing successively to retain and release each cushion individually on the chute before they reach t to the rocker, said assembly being slaved to the rocker so as to retain the next cushion when the rocker already contains a cushion and makes it fall into the cage which is presented and to release said cushion so that it is presented on the rocker when it returns to position.
  • FIG. 1 There is shown schematically in Figure 1 a bag (101) provided with a handle or stiffening element (102) which has been attached thereto.
  • the object of the invention is to further improve the structure of the intermediate bag (104).
  • the bags (104) are arranged, after the cutting of the lower horns, one by one on a conveyor belt (106) operating in an indexed manner which brings them to a compression assembly (107) ensuring their maintenance and their positioning in order to carry out the desired welding and cutting operations.
  • This compression assembly is composed of a side plate (108), a stop plate (109) and a closure angle (110).
  • the compression assembly forms a partially open cage along one of the sides (opposite the ventuose).
  • the fixed side plate (111) remains (without light), as well as the stop plate (109), but the angle (112) is more enveloping, so that the assembly of restraint is a cage almost closed so as to ensure by itself the maintenance and positioning of the bag without using a suction cup.
  • the upper horn (105) of the bag is disposed between the two articulated jaws (116, 117) of a welding clamp (118) which also includes an integrated cutting tool (119).
  • the welding and cutting takes place automatically from the final positioning of the bag, for example under the effect of the suction cup (114) as shown in FIG. 3b.
  • the clamp (118), the suction cup (114), the plate (109) and the plates (110, respectively 112) are released or retracted, the bag being released by the conveyor belt at the same time as the next one is positioned.
  • the compression assembly is a rigid cage (120), into which the cushions fall.
  • the cage is integral in translation with the conveyor belt (121). ).
  • the pinching and cutting of the lower horns and of one of the upper horns are carried out while the cushion is in said cage.
  • the finished bag is evacuated from the cage when the latter tips over at the level of the return roller of the conveyor belt.
  • FIGS. 5 and 6 represent a device arranged upstream of the device of FIG. 4.
  • a proximity detector When each cage is under the scale, a proximity detector, not shown, triggers the tilting of the scale around its axis (203) by means of a jack (204) whose yoke (205) is connected to the frame (206) and whose rod (207) is connected by a link (208) to the axis (203).
  • the output or withdrawal of the cylinder rod therefore respectively control the tilting or return to the position of the rocker.
  • the latter may also include a chute profile (209) which will come in line with the chute (202), and a holding jaw (210) articulated on the body of the rocker along an axis (211).
  • This jaw serves to keep the cushion on the rocker as long as possible, so that it falls as close as possible to the vertical.
  • the opening of the jaw (210) is controlled by a roller integral in rotation with the rocker, and the displacement of which, during tilting, causes a lever which releases the jaw.
  • the jaw is also returned by a return spring (212) fixed on the one hand to the jaw and on the other hand to the rocker (200).
  • the final position of the rocker (200 ') and the jaw (210') is shown in dotted lines when the cushion is released.
  • the cushions come from a chute (202).
  • a conventional tilt adjustment device (213) essentially consisting of an axis that can occupy any position. in a curved light that can be immobilized in each of them.
  • the assembly (201) essentially consists of a double arm (214) articulated around an axis (215) which pivots in a yoke (216) integral with the frame.
  • the rotation of the double arm is controlled by a lever (217) and a connecting rod assembly (218) crank (219).
  • the lever (217) is controlled in rotation about its axis (220) on the one hand by a lug (221) integral with the rocker (200) and on the other hand a return spring (222).
  • the ends of the arms (223, 224) will be protected by a flexible and rounded material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Air Bags (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Package Closures (AREA)
  • Laminated Bodies (AREA)
  • Prostheses (AREA)
  • Lubricants (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Packages (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Basic Packing Technique (AREA)
  • Harvester Elements (AREA)

Abstract

Welding and cutting process in which the bag is disposed in a holding unit (107) supporting and positioning it, and is composed of a side plate (108), a stop plate (109), and a closing angle member.

Description

La présente invention a pour objet un dispositif pour la soudure et la découpe d'au moins une corne d'un sachet en matière synthétique, du type obtenu à partir d'un coussin rempli de liquide, dispositif dans lequel le sachet est disposé sur une surface plane dans un ensemble de contention assurant son positionnement et son maintien, ladite corne étant soudée par une mâchoire de soudure et découpée.The subject of the present invention is a device for welding and cutting at least one horn of a plastic bag, of the type obtained from a cushion filled with liquid, device in which the bag is placed on a flat surface in a compression assembly ensuring its positioning and its maintenance, said horn being welded by a welding jaw and cut out.

Un sachet de ce type et un dispositif pour son obtention ont fait l'objet de la demande de brevet européen EP-A-0 142 456 au nom de la demanderesse, à laquelle il est fait ici expressément référence et qui fait partie de l'état de la technique selon l'article 54(3) CBE.A bag of this type and a device for obtaining it have been the subject of European patent application EP-A-0 142 456 in the name of the applicant, to which express reference is made here and which forms part of the state of the art according to Article 54 (3) EPC.

Les produits ainsi obtenus se présentent généralement sous la forme de sachets ayant une base plane et munis à leur partie supérieure de deux cornes ou coins.The products thus obtained are generally in the form of sachets having a flat base and provided at their upper part with two horns or corners.

Par ailleurs, le brevet FR-A-1 332 651 décrit un dispositif de conformation dans lequel les cornes des coussins sont rabattues sur le corps de celui-ci et collées ultérieurement. Il n'y a donc pas de découpe et ceci impose la phase de repliage et de collage.Furthermore, patent FR-A-1 332 651 describes a shaping device in which the horns of the cushions are folded over the body of the latter and glued later. There is therefore no cutting and this requires the folding and gluing phase.

Enfin, le brevet FR-A-1 259 662 décrit un dispositif de soudure et de découpe selon le préambule de la revendication 1, mais de structure complexe et peu fiable dans la pratique.Finally, patent FR-A-1 259 662 describes a welding and cutting device according to the preamble of claim 1, but of complex structure and unreliable in practice.

Or, lorsque l'on désire munir un sachet du type ci- dessus d'une poignée de préhension et/ou de rigidification, il est ensuite nécessaire pour assurer une meilleure stabilité du sachet, une bonne préhension et un bon versage, de couper la corne supérieure disposée juste au-dessus de ladite poignée.However, when it is desired to provide a bag of the above type with a handle for grip and / or stiffening, it is then necessary to ensure better stability of the bag, good grip and good pouring, to cut the upper horn arranged just above said handle.

Aucun dispositif ne permet actuellement d'y parvenir.No device currently allows to achieve this.

La présente invention a pour but de proposer un dispositif pour obtenir ce résultat.The object of the present invention is to propose a device for obtaining this result.

Ce résultat est obtenu avec un dispositif du type cité en préambule, caractérisé en ce qu'il comporte:

  • - une bande transporteuse fonctionnant de manière indexée et amenant les sachets vers l'ensemble de contention assurant leur maintien et leur positionnement, ledit ensemble de contention étant composé respectivement d'une plaque latérale, d'une plaque de butée et d'une cornière de fermeture, lesdits coussins ayant au préalable été munis d'une poignée ou élément de rigidification, ladite mâchoire de soudure intégrant un outil de découpe.
This result is obtained with a device of the type mentioned in the preamble, characterized in that it comprises:
  • - A conveyor belt operating in an indexed manner and bringing the bags to the compression assembly ensuring their maintenance and their positioning, said compression assembly being composed respectively of a side plate, a stop plate and an angle of closing, said cushions having previously been provided with a handle or stiffening element, said welding jaw incorporating a cutting tool.

De manière préférentielle, dans la mise en oeuvre de ce dispositif, les deux coins inférieurs auront été au préalable soudés et découpés pour donner de la stabilité au sachet.Preferably, in the implementation of this device, the two lower corners will have been previously welded and cut to give stability to the bag.

Selon une variante avantageuse de mise en oeuvre, le dispositif comporte en outre un dispositif d'amenée et d'alimentation en coussins en matière synthétique souple remplis de liquide en amont d'un ensemble de conformation desdits coussins en sachets individuels munis chacun d'une poignée, lesdits coussins étant amenés par le biais d'une goulotte vers une courroie transporteuse supportant des cages solidaires en translation de ladite courroie, chaque cage devant recevoir un coussin en vue de sa conformation définitive, et en ce qu'il comporte d'une part une bascule en bout de la goulotte, ladite bascule recevant successivement chaque coussin provenant de la goulotte et étant commandée en basculement, pour libérer le coussin qu'elle supporte, lors du passage de chaque cage de la courroie transporteuse à la verticale de la bascule, et d'autre part un ensemble permettant successivement de retenir et de dégager chaque coussin individuellement sur la goulotte avant que ceux-ci ne parviennent à la bascule, ledit ensemble étant asservi à la bascule de manière à retenir le coussin suivant lorsque la bascule contient déjà un coussin et le fait tomber dans la cage qui se présente et à libérer ledit coussin pour qu'il se présente sur la bascule lorsque celle-ci revient en position.According to an advantageous variant of implementation, the device further comprises a device for supplying and supplying cushions of flexible synthetic material filled with liquid upstream of an assembly for shaping said cushions into individual sachets each provided with a handle, said cushions being brought through a chute to a conveyor belt supporting cages integral in translation with said belt, each cage having to receive a cushion for its final conformation, and in that it comprises a share a rocker at the end of the chute, said rocker successively receiving each cushion coming from the chute and being tilted, to release the cushion which it supports, during the passage of each cage of the conveyor belt vertically over the rocker , and on the other hand a set allowing successively to retain and release each cushion individually on the chute before they reach t to the rocker, said assembly being slaved to the rocker so as to retain the next cushion when the rocker already contains a cushion and makes it fall into the cage which is presented and to release said cushion so that it is presented on the rocker when it returns to position.

On comprendra mieux l'invention à l'aide de la description ci-après de modes de mise en oeuvre donnés à titre d'exemple non limitatifs en référence aux dessins annexés dans lesquels:

  • - la figure 1 est une vue schématique du dispositif selon l'invention;
  • - la figure 2a illustre en vue le dispositif de maintien et de positionnement du sachet, selon la flèche 1 de la figure 1,
  • - la figure 2b est une variante du dispositif de la figure 2a,
  • - les figures 3a et 3c illustrent les différentes phases de l'intervention sur le sachet immobilisé,
  • - la figure 4 est une variante de mise en oeuvre d'un dispositif conforme à l'invention,
  • - la figure 5 est une vue schématique en élévation latérale d'une variante de mise en oeuvre de l'invention, avec représentation des éléments de commande de la bascule,
  • - la figure 6 est une vue schématique en élévation latérale du dispositif de la figure 5 avec représentation des éléments de commande de l'ensemble de retenue et de dégagement des coussins sur la goulotte.
The invention will be better understood with the aid of the following description of embodiments given by way of nonlimiting example with reference to the appended drawings in which:
  • - Figure 1 is a schematic view of the device according to the invention;
  • FIG. 2a illustrates a view of the device for holding and positioning the bag, according to arrow 1 in FIG. 1,
  • FIG. 2b is a variant of the device in FIG. 2a,
  • - Figures 3a and 3c illustrate the different phases of intervention on the immobilized bag,
  • FIG. 4 is an alternative embodiment of a device according to the invention,
  • FIG. 5 is a schematic side elevation view of an alternative embodiment of the invention, with representation of the control elements of the scale,
  • - Figure 6 is a schematic side elevational view of the device of Figure 5 with representation of the control elements of the retaining assembly and release of the cushions on the chute.

On a schématisé à la figure 1 un sachet ( 101 ) muni d'une poignée ou élément de rigidification (102) qui a été rapporté sur celui-ci.There is shown schematically in Figure 1 a bag (101) provided with a handle or stiffening element (102) which has been attached thereto.

On a schématisé pour mémoire la phase de soudure et de découpe des cornes inférieures, réalisée préalablement par un ensemble (103) en soi connu.We have schematized for the record the welding and cutting phase of the lower horns, previously carried out by an assembly (103) known per se.

On obtient ainsi un sachet intermédiaire, utilisable tel quel, référencé (104).An intermediate sachet is thus obtained, which can be used as it is, referenced (104).

L'invention a pour objet d'améliorer encore la structure du sachet intermédiaire (104).The object of the invention is to further improve the structure of the intermediate bag (104).

Pour ce faire, ist est proposé de couper la corne supérieure (105) disposée directement au-dessus de la poignée (102).To do this, ist is proposed to cut the upper horn (105) disposed directly above the handle (102).

Pour ce faire, les sachets (104) sont disposés, après la découpe des cornes inférieurs, un à un sur une bande transporteuse (106) fonctionnant de manière indexée qui les amène vers un ensemble de contention (107) assurant leur maintien et leur positionnement en vue de réaliser les opérations de soudure et de découpe désirées.To do this, the bags (104) are arranged, after the cutting of the lower horns, one by one on a conveyor belt (106) operating in an indexed manner which brings them to a compression assembly (107) ensuring their maintenance and their positioning in order to carry out the desired welding and cutting operations.

Cet ensemble de contention est composé d'une plaque latérale (108), d'une plaque de butée (109) et d'une cornière de fermeture (110).This compression assembly is composed of a side plate (108), a stop plate (109) and a closure angle (110).

En référence à la figure 2a, on constate que la plaque latérale (108) est fixe. La plaque de butée (109), contre laquelle vient buter le sachet amené par la bande (106), est escamotable.Referring to Figure 2a, we see that the side plate (108) is fixed. The stop plate (109), against which abuts the bag brought by the strip (106), is retractable.

Lorsque le sachet est bloqué par les plaques (108) et (109), il est maintenu fermement et bloqué sous l'effet de la cornière escamotable (110) articulée selon un axe (113) d'une part et d'une ventouse (114) opérant en translation au travers d'une lumière (115) ménagée dans la plaque (108).When the bag is blocked by the plates (108) and (109), it is held firmly and blocked under the effect of the retractable angle iron (110) articulated along an axis (113) on the one hand and of a suction cup ( 114) operating in translation through a light (115) formed in the plate (108).

Dans ce mode de mise en oeuvre, l'ensemble de contention forme une cage partiellement ouverte selon l'un des côtés (opposé à la ventuose).In this embodiment, the compression assembly forms a partially open cage along one of the sides (opposite the ventuose).

Selon la variante de la figure 2b, la plaque latérale fixe (111) subsiste (sans lumière), ainsi que la plaque de butée (109), mais la cornière (112) est plus enveloppante, de manière à ce que l'ensemble de contention soit une cage quasiment fermée de façon à assurer à elle seule le maintien et le positionnement du sachet sans l'aide d'une ventouse.According to the variant of FIG. 2b, the fixed side plate (111) remains (without light), as well as the stop plate (109), but the angle (112) is more enveloping, so that the assembly of restraint is a cage almost closed so as to ensure by itself the maintenance and positioning of the bag without using a suction cup.

En cette position, la corne supérieure (105) du sachet est disposée entre les deux mors articulés (116, 117) d'une pince de soudure (118) qui comporte également un outil de découpe intégré (119).In this position, the upper horn (105) of the bag is disposed between the two articulated jaws (116, 117) of a welding clamp (118) which also includes an integrated cutting tool (119).

La soudure et la découpe s'opèrent automatiquement dès le positionnement définitif du sachet, par exemple sous l'effet de la ventouse (114) comme représenté à la-figure 3b.The welding and cutting takes place automatically from the final positioning of the bag, for example under the effect of the suction cup (114) as shown in FIG. 3b.

Puis la pince (118), la ventouse (114), la plaque (109) et les plaques (110, respectivement 112) sont relachées ou escamotées, le sachet étant dégagé par la bande transporteuse en même temps que le suivant est positionné.Then the clamp (118), the suction cup (114), the plate (109) and the plates (110, respectively 112) are released or retracted, the bag being released by the conveyor belt at the same time as the next one is positioned.

Bien entendu, l'ensemble des opérations s'opère de manière séquentielle et ordonnée, en utilisant des dispositifs pneumatiques, mécaniques et électriques à la portée de l'homme de l'art.Of course, all of the operations are carried out in a sequential and orderly manner, using pneumatic, mechanical and electrical devices within the reach of those skilled in the art.

Selon une variante de mise en oeuvre, représentée à la figure 4, l'ensemble de contention est une cage rigide (120), dans laquelle tombent les coussins.According to an alternative embodiment, represented in FIG. 4, the compression assembly is a rigid cage (120), into which the cushions fall.

La cage est solidaire en translation de la bande transporteuse (121). ).The cage is integral in translation with the conveyor belt (121). ).

Dans ce dispositif, le pinçage et la découpe des cornes inférieures et de l'une des cornes supérieures sont opérés pendant que le coussin est dans ladite cage.In this device, the pinching and cutting of the lower horns and of one of the upper horns are carried out while the cushion is in said cage.

Le sachet fini est évacué de la cage, lorsque celle-ci se bascule au niveau du rouleau de renvoi de la bande transporteuse.The finished bag is evacuated from the cage when the latter tips over at the level of the return roller of the conveyor belt.

On se référera maintenant aux figures 5 et 6 qui représentent un dispositif disposé en amont du dispositif de la figure 4.Reference will now be made to FIGS. 5 and 6 which represent a device arranged upstream of the device of FIG. 4.

Ce dispositif, comme indiqué précédemment, se compose essentiellement de:

  • - une bascule (220),
  • - un ensemble de retenue et de dégagement (201),
  • - une goulotte (202).
This device, as indicated above, essentially consists of:
  • - a scale (220),
  • - a retaining and release assembly (201),
  • - a chute (202).

On explicitera tout d'abord le fonctionnement de la bascule. Celle-ci est destinée à alimenter en coussin les cages qui défilent sous elle, chacune devant recevoir un coussin.We will first explain the operation of the scale. This is intended to supply a cushion to the cages that pass under it, each to receive a cushion.

Lorsque chaque cage se présente sous la bascule, un détecteur de proximité, non représenté, déclenche le basculement de la bascule autour de son axe (203) par le biais d'un vérin (204) dont la chape (205) est reliée au bâti (206) et dont la tige (207) est reliée par une biellette (208) à l'axe (203). La sortie ou le retrait de la tige du vérin commandent donc respectivement le basculement ou le retour en position de la bascule.When each cage is under the scale, a proximity detector, not shown, triggers the tilting of the scale around its axis (203) by means of a jack (204) whose yoke (205) is connected to the frame (206) and whose rod (207) is connected by a link (208) to the axis (203). The output or withdrawal of the cylinder rod therefore respectively control the tilting or return to the position of the rocker.

Pour assurer un positionnement adéquat de chaque coussin sur la bascule, celle-ci pourra en outre comporter un profil de goulotte (209) qui viendra dans le prolongement de la goulotte (202), et une mâchoire de maintien (210) articulée sur le corps de la bascule selon un axe (211). Cette mâchoire sert à maintenir le coussin sur la bascule le plus longtemps possible, de manière à ce qu'il tombe plus près possible de la verticale. L'ouverture de la mâchoire (210) est commandée par un galet solidaire en rotation de la bascule, et dont le déplacement, lors du basculement, entraîne un levier qui libère la mâchoire. La mâchoire est rappelée en outre par un ressort de rappel (212) fixé d'une part à mâchoire et d'autre part à la bascule (200). On a représenté en pointillés la position finale de la bascule (200') et de la mâchoire (210') au moment du lâcher du coussin.To ensure adequate positioning of each cushion on the scale, the latter may also include a chute profile (209) which will come in line with the chute (202), and a holding jaw (210) articulated on the body of the rocker along an axis (211). This jaw serves to keep the cushion on the rocker as long as possible, so that it falls as close as possible to the vertical. The opening of the jaw (210) is controlled by a roller integral in rotation with the rocker, and the displacement of which, during tilting, causes a lever which releases the jaw. The jaw is also returned by a return spring (212) fixed on the one hand to the jaw and on the other hand to the rocker (200). The final position of the rocker (200 ') and the jaw (210') is shown in dotted lines when the cushion is released.

On a indiqué précédemment que les coussins proviennent d'une goulotte (202). En fonction de la nature des produits conditionnés, des cadences recherchées, du volume des coussins, il est souhaitable que celle-ci soit munie d'un dispositif de réglage d'inclinaison classique (213) constitué essentiellement d'un axe pouvant occuper toutes positions dans une lumière courbe et pouvant être immobilisé en chacune de celles-ci.It has previously been indicated that the cushions come from a chute (202). Depending on the nature of the products packaged, the desired rates, the volume of the cushions, it is desirable that the latter be provided with a conventional tilt adjustment device (213) essentially consisting of an axis that can occupy any position. in a curved light that can be immobilized in each of them.

On fera maintenant référence à la figure 6. Les coussins individuels arrivant l'un après l'autre par la goulotte (202), il faut éviter que le coussin suivant ne vienne buter sur la bascule (200) lors de son basculement car, outre une détérioration du coussin restant sur la goulotte, on risque un entraînement par la bascule des deux coussins, ce qui est bien entendu à éviter.Reference will now be made to FIG. 6. The individual cushions arriving one after the other through the chute (202), it is necessary to prevent the following cushion from coming up against the rocker (200) during its tilting because, in addition deterioration of the cushion remaining on the chute, there is a risk of the two cushions rocking, which is of course to be avoided.

C'est l'objet de l'ensemble (201) que d'éviter une telle situation.It is the object of the whole (201) to avoid such a situation.

L'ensemble (201) est constitué essentiellement d'un double bras (214) articulé autour d'un axe (215) qui tourillonne dans une chape (216) solidaire du bâti.The assembly (201) essentially consists of a double arm (214) articulated around an axis (215) which pivots in a yoke (216) integral with the frame.

La rotation du double bras est commandée par un levier (217) et un ensemble bielle (218) manivelle (219).The rotation of the double arm is controlled by a lever (217) and a connecting rod assembly (218) crank (219).

Le levier (217) est commandé en rotation autour de son axe (220) d'une part par un ergot (221) solidaire de la bascule (200) et d'autre part un ressort de rappel (222).The lever (217) is controlled in rotation about its axis (220) on the one hand by a lug (221) integral with the rocker (200) and on the other hand a return spring (222).

Le fonctionnement est le suivant. Lorsque un coussin a été chargé sur la bascule, le bras aval (223) est abaissé vers la goulotte et empêche le passage éventuel vers la bascule de tout coussin. Lorsque la bascule pivote progressivement pour libérer son coussin de double bras (214) pivote également progressivement autour de son axe et c'est le bras amont (224) qui bloque la descente des coussins vers la bascule. Lorsque la bascule remonte, le bras avant libère le coussin qu'elle retenait et celui-ci se présente sur la bascule lorsqu'elle revient en position.The operation is as follows. When a cushion has been loaded on the scale, the downstream arm (223) is lowered towards the chute and prevents the possible passage towards the scale of any cushion. When the rocker gradually pivots to release its double arm cushion (214) also gradually pivots around its axis and it is the upstream arm (224) which blocks the descent of the cushions towards the rocker. When the rocker goes up, the front arm releases the cushion it was holding and it comes on the rocker when it returns to position.

Pour éviter une détérioration des coussins, les bouts des bras (223, 224) seront protégés par une matière souple et arrondis.To avoid deterioration of the cushions, the ends of the arms (223, 224) will be protected by a flexible and rounded material.

Claims (13)

1. Device for the sealing (welding) and cutting off of at least one corner (105) of a sachet (104) of synthetic material, of the type produced from a cushion filled with liquid, in which device the sachet is disposed on a flat surface in a restraining unit (107) which assures positioning and holding of the sachet, said corner (105) being sealed by a sealing jaw (118) and cut off, characterized in that the device comprises:
- a conveyor belt (106,121) operating in idexed manner and bringing the sachets to the restraining unit which holds and positions them, said restraining unit (107) being composed respectively of a lateral plate (108, 111), of a stop plate (109) and of a closure angle piece (110, 112), said cushions having been previously fitted with a handle or stiffening element (102), said jaw (118) incorporating a cutting tool (119).
2. Device according to Claim 1, characterized in that the stop plate (109) is retractable and that the angle piece (110, 112) is articulated about an axis (113).
3. Device according to one of Claims 1 and 2, characterized in that it comprises, in addition, a suction cup (114) operating through the lateral plate (111) via an aperture (115), said suction cup being removable in translatory motion.
4. Device according to Claim 1, characterized in that the restraining unit is composed of a cage (120), integral in translatory movement with the conveyor belt (121), allowing the lower corners and the upper corner to be pinched and cut off simultaneously.
5. Device according to Claim 4, characterized in that it comprises a device for bringing and supplying cushions of flexible synthetic material, filled with liquid, upstream of a shaping unit for shaping said cushions into individual sachets each equipped with a handle, said cushions being brought by the slope of a chute towards a conveyor belt carrying cages integral in translatory movement with said belt, each cage being intended to receive one cushion for the purpose of its final shaping, and in that the device comprises, on the one hand, a bascule (220) at the end of the chute (202), said bascule (200) receiving, in succession, each cushion coming from the chute and being controlled in tilting for releasing the cushion which it supports while each cage of the conveyor belt passes vertically beneath the bascule, and, on the other hand, an assembly (201) permitting, in succession, each cushion to be retained and released individually on the chute before the cushions reach the bascule, said assembly being connected in control with the bascule in such a manner as to retain the following cushion when the bascule already contains a cushion and causes it to fall into the cage which is offered up and to release said cushion so that it is present on the bascule when the latter returns into position.
6. Device according to Claim 5, characterized in that the tilting of the bascule (200) about its axis (203) is controlled by a proximity detector as each cage passes, which detector starts a ram (204), the rod (207) of which is connected by a crank (208) to the axis (203).
7. Device according to anyone of Claims 5 and 6, characterized in that the bascule (200) comprises, in addition, a holding jaw (210), articulated on the body of the bascule about an axis (211).
8. Device according to Claim 7, characterized in that opening of the jaw (210) is controlled by a roller rotatably integral with the bascule, the movement of which roller during tilting actuates a lever which releases the jaw, said jaw being restored by a spring (212).
9. Device according to any one of Claims 5 to 8, characterized in that the chute comprises a slope adjustment device (213).
10. Device according to any one of Claims 5 to 9, characterized in that the assembly (201) is composed of a double arm (214) articulated about an axis (215), the rotation of said arm being governed by a lever (217) and a connecting rod (218)-crank (219) assembly, the lever being rotatably governed about its axis (220) on the one hand by a lug (221) integral with the bascule (200) and on the other hand by a restoring spring (222).
11. Device according to Claim 10, characterized in that the double arm (214) comprises an upstream arm (224) and a downstream arm (223), which can release or block the cushions descending down the chute.
12. Device according to any one of Claims 10 and 11, characterized in that the ends of the arms (223, 224) are rounded and protected by a flexible material.
EP85440045A 1984-06-25 1985-06-25 Device for heat-sealing and cutting at least a top corner of a bag of synthetic material Expired EP0167469B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85440045T ATE38191T1 (en) 1984-06-25 1985-06-25 DEVICE FOR WELDING AND CUTTING AT LEAST ONE UPPER CORNER OF A PLASTIC BAG.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8410094 1984-06-25
FR8410094A FR2566321B1 (en) 1984-06-25 1984-06-25 PROCESS AND DEVICE FOR WELDING AND CUTTING AT LEAST ONE UPPER HORN OF A SYNTHETIC BAG
FR858500547A FR2576001B2 (en) 1985-01-11 1985-01-11 DEVICE FOR SUPPLYING CUSHIONS IN SYNTHETIC MATERIAL OF A CONFORMATION ASSEMBLY
FR8500547 1985-01-11

Publications (2)

Publication Number Publication Date
EP0167469A1 EP0167469A1 (en) 1986-01-08
EP0167469B1 true EP0167469B1 (en) 1988-10-26

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EP85440045A Expired EP0167469B1 (en) 1984-06-25 1985-06-25 Device for heat-sealing and cutting at least a top corner of a bag of synthetic material

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US (1) US4649696A (en)
EP (1) EP0167469B1 (en)
JP (1) JPH0688583B2 (en)
AT (1) ATE38191T1 (en)
AU (2) AU582165B2 (en)
BR (1) BR8503053A (en)
CA (1) CA1239333A (en)
DE (1) DE3565815D1 (en)
DK (1) DK158633C (en)
EG (1) EG17198A (en)
ES (3) ES8701592A1 (en)
FI (1) FI852503L (en)
GR (1) GR851557B (en)
HK (1) HK22690A (en)
IN (1) IN164542B (en)
MY (1) MY103695A (en)
NO (1) NO165099C (en)
NZ (2) NZ220397A (en)
PT (1) PT80702B (en)
SG (1) SG9990G (en)

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FR2611163B1 (en) * 1987-02-19 1989-02-10 Vittel Eaux Min DEVICE FOR PRODUCING A BAG IN FLEXIBLE SYNTHETIC MATERIAL; PROCESS FOR OBTAINING IT; BAG SO OBTAINED
JPH03249963A (en) * 1990-02-26 1991-11-07 Nippon Steel Corp Method and equipment for coating electrostatic powder
US5146731A (en) * 1990-06-20 1992-09-15 The United States Of America As Represented By The Secretary Of Agriculture Bagger receiver box
US5761884A (en) * 1995-11-29 1998-06-09 Arkmount Systems Inc. Method of making a filled container
US6178724B1 (en) 1997-10-29 2001-01-30 Arkmount Systems Inc. Container forming apparatus and method
US6195965B1 (en) * 1998-09-29 2001-03-06 Arkmount Systems Inc. Container with dispensing spout and method for making same
US6539692B1 (en) 1998-12-18 2003-04-01 Siptop Packaging, Inc. Form, fill and seal container forming apparatus
US20040052437A1 (en) * 2002-08-29 2004-03-18 Skymark Packaging Systems Inc. Pouch
CN103523287B (en) * 2013-10-09 2016-01-06 安徽远鸿机械自动化有限公司 A kind of woven bag packaging machine helps mechanism
CN107487497B (en) * 2017-08-16 2023-07-07 深圳市卓翼科技股份有限公司 High-speed corner shearing device
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19546846A1 (en) * 1995-12-15 1997-07-03 Tetra Laval Holdings & Finance Process for producing a sachet filled with plasticizer

Also Published As

Publication number Publication date
NO165099C (en) 1991-01-02
DK158633B (en) 1990-06-25
FI852503L (en) 1985-12-26
EG17198A (en) 1991-08-30
GR851557B (en) 1985-11-25
ES8701592A1 (en) 1986-12-01
DK285085D0 (en) 1985-06-24
AU4414985A (en) 1986-01-02
NO852536L (en) 1985-12-27
ES557049A0 (en) 1987-09-01
FI852503A0 (en) 1985-06-25
NO165099B (en) 1990-09-17
PT80702B (en) 1987-09-30
AU2756088A (en) 1989-04-20
DE3565815D1 (en) 1988-12-01
AU591620B2 (en) 1989-12-07
NZ212533A (en) 1988-06-30
CA1239333A (en) 1988-07-19
EP0167469A1 (en) 1986-01-08
AU582165B2 (en) 1989-03-16
US4649696A (en) 1987-03-17
HK22690A (en) 1990-03-30
JPS6111322A (en) 1986-01-18
PT80702A (en) 1985-07-01
DK285085A (en) 1985-12-26
DE3565815T (en) 1988-12-01
JPH0688583B2 (en) 1994-11-09
ATE38191T1 (en) 1988-11-15
BR8503053A (en) 1986-03-11
ES544500A0 (en) 1986-12-01
MY103695A (en) 1993-08-28
IN164542B (en) 1989-04-01
ES8707894A1 (en) 1987-09-01
ES8707893A1 (en) 1987-09-01
DK158633C (en) 1990-12-03
SG9990G (en) 1990-10-26
NZ220397A (en) 1988-06-30
ES557050A0 (en) 1987-09-01

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