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EP0648673A1 - Method and device for forming, filling and sealing bags - Google Patents

Method and device for forming, filling and sealing bags Download PDF

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Publication number
EP0648673A1
EP0648673A1 EP94115070A EP94115070A EP0648673A1 EP 0648673 A1 EP0648673 A1 EP 0648673A1 EP 94115070 A EP94115070 A EP 94115070A EP 94115070 A EP94115070 A EP 94115070A EP 0648673 A1 EP0648673 A1 EP 0648673A1
Authority
EP
European Patent Office
Prior art keywords
tube
mouthpiece
hose
seam sealing
transverse seam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94115070A
Other languages
German (de)
French (fr)
Other versions
EP0648673B1 (en
Inventor
Harrie Janssen
Peter Slenders
Mark Smeets
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0648673A1 publication Critical patent/EP0648673A1/en
Application granted granted Critical
Publication of EP0648673B1 publication Critical patent/EP0648673B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2042—Means for altering the cross-section of the tube filling opening prior to transversal sealing, e.g. tube spreading devices
    • 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
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/14—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers movable with a moving container or wrapper during filling or depositing
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/207—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web advancing continuously

Definitions

  • the mouthpiece is movably arranged within the filling tube and its shape is adapted so that damage to the tube is prevented during the transition from the molded tube to the mouthpiece.
  • clamping jaws which are firmly connected to the cross-seam jaw housing and act positively on the mouthpiece, an absolutely parallel movement of the mouthpiece with the cross-seam jaw housing is achieved.
  • a coupling of the inner tube with an actuating cylinder via a linkage makes it easy and safe to lift the inner tube in the Shaped tube and thus also the mouthpiece safely.
  • One side of the mouthpiece 20 is adapted to the shape of the shaped tube 12 at the outlet 17 at the lower end of the shaped tube 12, that is, for example, has a round shape, and is enclosed by this almost form-fitting. Thus, in particular, there are no edges possibly damaging the hose 16 during the transition from the molded tube 12 to the mouthpiece 20.
  • the side of the mouthpiece 20 opposite the inner tube 19 has one Floor 21, the shape of which is adapted to a block floor to be folded, that is to say in particular has a rectangular shape. Furthermore, there is an opening 22 in the bottom 21 for the filling material.
  • the area between the two sides of the mouthpiece 20 is designed such that a continuous transition between the two round or rectangular sides is created.
  • the conveying speed of the hose 16 is adapted to the speed of the cross-seam jaw housing 27 by means of the conveyor belts 18. If the speed of the transverse seam jaw housing 27 and that of the hose 16 are the same, the protrusion of the hose 16 required to form the block bottom is below the base 21 of the mouthpiece 20. At the same time, the holding jaws 37 of the clamping devices 36 previously in a retracted position are actuated and come with the interposition of the hose 16 in positive contact with the mouthpiece (Fig.3).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

A device for producing, filling and sealing bags (35) consisting of a tube (16) has a forming pipe (12) and a movable inner pipe (19) with a mouthpiece (20) which is connected thereto and adjacently to the bottom (21) of which a block bottom for a bag (35) is folded. The mouthpiece (20) is moved by means of a clamping device (36) at the conveying speed of the tube (16) and parallel to the latter. The clamping device (36) is arranged on a transverse-seam jaw housing (27) which is itself movable along the conveying path of the tube (16). By means of the device according to the invention and the method which can be put into practice with this, block bottoms can be folded in bags (35) during a continuous conveyance of the tube (16), thereby resulting in a particularly high output of the device. <IMAGE>

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Verfahren zum Herstellen, Füllen und Verschließen von Beutein nach dem Oberbegriff des Anspruchs 1. Bei bekannten Verfahren dieser Art wird mittels einer Schlauchformeinrichtung und einer Längsnahtsiegeleinrichtung aus einer endlosen Kunststoff-Folienbahn ein Schlauch geformt. Dieser wird anschließend von vakuumgesteuerten Förderbändern, die an der Schlauchformeinrichtung angeordnet sind, um jeweils eine bestimmte Länge schrittweise weitergefördert. Unterhalb der Schlauchformeinrichtung befinden sich eine stationäre Blockbodenformeinrichtung und eine Quernahtsiegeleinrichtung, die in den zugeförderten Schlauch einen Blockboden falten und anschließend eine Quernaht für den Boden bilden. Danach beginnt das Füllen des Produkts in den Schlauch. Bei der Bildung der Quernaht für den Boden wird gleichzeitig eine Kopfquernaht für den zuvor geförderten Schlauch gebildet, so daß ein geschlossener Beutel entsteht, der anschließend vom Schlauch abgetrennt werden kann. Nachteilig bei dem bekannten Verfahren ist, daß der Schlauch nicht kontinuierlich, sondern schrittweise gefördert wird, wodurch die Leistung bei nach diesem Verfahren arbeitenden Vorrichtungen verhältnismäßig gering ist. Wünschenswert wäre es dagegen, auch Blockböden in Beutel falten zu können, deren Schlauch von der Vorrichtung kontinuierlich gefördert wird, wodurch sich deren Leistung erhöhen würde.The invention is based on a method for producing, filling and closing bags by the preamble of claim 1. In known methods of this type, a tube is formed from an endless plastic film web by means of a tube forming device and a longitudinal seam sealing device. This is then conveyed gradually by a certain length by vacuum-controlled conveyor belts which are arranged on the tube forming device. Beneath the tube forming device are a stationary block bottom forming device and a transverse seam sealing device, which fold a block bottom into the supplied hose and then form a transverse seam for the bottom. Then the product begins to be filled into the hose. When the transverse seam for the floor is formed, a transverse head seam is simultaneously formed for the previously conveyed hose, so that a closed bag is formed, which can then be separated from the hose. A disadvantage of the known method is that the hose is not is continuously, but gradually promoted, whereby the performance of devices using this method is relatively low. On the other hand, it would be desirable to be able to fold block bottoms into bags, the hose of which is continuously conveyed by the device, which would increase its performance.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Verfahren zum Herstellen, Füllen und Verschließen von Beuteln mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, daß Blockböden in einen kontinuierlich geförderten Kunststoff-Folienschlauch gefaltet werden können. Dadurch ist die Leistung bei nach diesem Verfahren arbeitenden Vorrichtungen besonders hoch.
Die Merkmale einer Vorrichtung zum Durchführen des erfindungsgemäßen Verfahrens sind in Anspruch 2 aufgezeigt.The method according to the invention for producing, filling and closing bags with the characterizing features of claim 1 has the advantage that block bottoms can be folded into a continuously conveyed plastic film tube. As a result, the performance is particularly high in devices operating according to this method.
The features of a device for performing the method according to the invention are shown in claim 2.

Durch die in den Unteransprüchen angeführten Maßnahmen und Ausbildungen sind Weiterbildungen und Verbesserungen der im Anspruch 2 angegebenen Vorrichtung möglich.
Vorteilhaft ist es, wenn das Mundstück innerhalb des Füllrohrs bewegbar angeordnet und dessen Form angepasst ist, so daß eine Beschädigung des Schlauches beim Übergang vom Formrohr auf das Mundstück verhindert wird.
Durch die Verwendung von Klemmbacken, die fest mit dem Quernahtbakkengehäuse verbunden sind und formschlüssig auf das Mundstück einwirken, wird eine absolut parallele Bewegung des Mundstücks mit dem Quernahtbackengehäuse erzielt.
Eine Kopplung des Innenrohrs mit einem Stellzylinder über ein Gestänge stellt ein einfaches und sicheres Anheben des Innenrohr im Formrohr und damit auch des Mundstücks sicher.Through the measures and training specified in the subclaims, further developments and improvements of the device specified in claim 2 are possible.
It is advantageous if the mouthpiece is movably arranged within the filling tube and its shape is adapted so that damage to the tube is prevented during the transition from the molded tube to the mouthpiece.
Through the use of clamping jaws, which are firmly connected to the cross-seam jaw housing and act positively on the mouthpiece, an absolutely parallel movement of the mouthpiece with the cross-seam jaw housing is achieved.
A coupling of the inner tube with an actuating cylinder via a linkage makes it easy and safe to lift the inner tube in the Shaped tube and thus also the mouthpiece safely.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. Es zeigen Fig.1 eine Vorrichtung zum Herstellen, Füllen und Verschließen von Beuteln vereinfacht in Vorderansicht und die Fig.2 bis Fig.6 die Vorrichtung nach Fig.1 während verschiedener Phasen der Beutelherstellung vereinfacht in Vorderansichten.An embodiment of the invention is shown in the drawing and is explained in more detail in the following description. 1 shows a simplified view of a device for producing, filling and closing bags, and FIGS. 2 to 6 show the device according to FIG. 1 simplified in different views of the bag production in front views.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Die Vorrichtung (Fig.1) hat eine Schlauchformeinrichtung 10, bestehend aus einer Formschulter 11 und einem Formrohr 12, sowie eine Längsnahtsiegeleinrichtung 13, mit denen in bekannter Weise eine Kunststoff-Folienbahn 14 zu einem Schlauch 16 geformt wird. Beiderseits des Formrohrs 12 ist in Höhe der Längsnahtsiegeleinrichtung 13 je eine Abzugseinrichtung in Form eines vakuumunterstützten Förderbandes 18 für den Schlauch 16 angeordnet. In dem Formrohr 12 ist ein innerhalb eines bestimmten Bereichs, beispielsweise 20 mm, aufund abbewegbares Innenrohr 19 mit einem damit verbundenen Mundstück 20 angeordnet. Die Länge des Innenrohrs 19 mit dem Mundstück 20 ist dabei größer als die Länge des Formrohrs 12. Die eine Seite des Mundstücks 20 ist am Austritt 17 am unteren Ende des Formrohrs 12 der Form des Formrohrs 12 angepasst, hat also beispielsweise eine runde Form, und wird von diesem nahezu formschlüssig umschlossen. Somit ergeben sich insbesondere keine den Schlauch 16 möglicherweise beschädigenden Kanten beim Übergang vom Formrohr 12 auf das Mundstück 20. Die dem Innenrohr 19 gegenüberliegende Seite des Mundstücks 20 hat einen
Boden 21, dessen Form einem zu faltenden Blockboden angepasst ist, also insbesondere eine rechteckige Form hat. Weiterhin ist im Boden 21 eine Öffnung 22 für das Füllgut vorhanden. Der Bereich zwischen den beiden Seiten des Mundstücks 20 ist derart ausgebildet, daß ein kontinuierlicher Übergang zwischen den beiden runden bzw. rechteckigen Seiten geschaffen wird.
Das Innenrohr 19 bzw. das Mundstück 20 ist über ein Gestänge 23 mit einem beispielsweise pneumatisch betriebenen und fest mit der Vorrichtung verbundenem Stellzylinder 25 gekoppelt.
Unterhalb des Mundstücks 20 ist ein in Förderrichtung des Schlauches 16 auf- und abbewegbares Quernahtbackengehäuse 27 angeordnet. Auf diesem ist eine Packstoffaltvorrichtung 30 mit Seitenfaltlöffeln 31 befestigt. Die Packstoffaltvorrichtung 30 ist quer zur Förderrichtung des Schlauches 16 auf dem Quernahtbackengehause 27 bewegbar. Weiterhin ist auf dem Quernahtbackengehäuse 27 eine Quernahtsiegeleinrichtung 32 mit Quernahtbacken 33 angeordnet, deren Schließbewegung mit der Bewegung der Seitenfaltlöffel 31 über ein Kurvengetriebe synchronisiert ist. Der Quernahtsiegeleinrichtung 32 ist eine nicht dargestellte Schneideinrichtung zum Abtrennen von Beuteln 35 von dem Schlauch 16 zugeordnet.
Oberhalb der Packstoffaltvorrichtung 30 befindet sich beiderseits des Mundstücks 20 je eine Klemmeinrichtung 36, die ebenfalls fest mit dem Quernahtbackengehäuse 27 verbunden sind. Die Klemmeinrichtungen 36 haben beispielsweise pneumatisch betriebene Haltebacken 37, deren dem Mundstück 20 zugewandten Stirnflächen 38 dem Mundstück 20 formschlüssig angepasst sind.The device (FIG. 1) has a tube forming device 10, consisting of a shaped shoulder 11 and a shaped tube 12, as well as a longitudinal seam sealing device 13, with which a plastic film web 14 is formed into a tube 16 in a known manner. A pull-off device in the form of a vacuum-assisted conveyor belt 18 for the hose 16 is arranged on each side of the shaped tube 12 at the level of the longitudinal seam sealing device 13. An inner tube 19, which can be moved up and down within a certain range, for example 20 mm, with a mouthpiece 20 connected thereto is arranged in the shaped tube 12. The length of the inner tube 19 with the mouthpiece 20 is greater than the length of the shaped tube 12. One side of the mouthpiece 20 is adapted to the shape of the shaped tube 12 at the outlet 17 at the lower end of the shaped tube 12, that is, for example, has a round shape, and is enclosed by this almost form-fitting. Thus, in particular, there are no edges possibly damaging the hose 16 during the transition from the molded tube 12 to the mouthpiece 20. The side of the mouthpiece 20 opposite the inner tube 19 has one
Floor 21, the shape of which is adapted to a block floor to be folded, that is to say in particular has a rectangular shape. Furthermore, there is an opening 22 in the bottom 21 for the filling material. The area between the two sides of the mouthpiece 20 is designed such that a continuous transition between the two round or rectangular sides is created.
The inner tube 19 or the mouthpiece 20 is coupled via a linkage 23 to an actuating cylinder 25, for example pneumatically operated and firmly connected to the device.
A cross seam jaw housing 27 which can be moved up and down in the conveying direction of the hose 16 is arranged below the mouthpiece 20. A packaging material device 30 with side folding spoons 31 is fastened on this. The packaging material device 30 is movable transversely to the conveying direction of the hose 16 on the cross-seam jaw housing 27. Furthermore, a transverse seam sealing device 32 with transverse seam jaws 33 is arranged on the transverse seam jaw housing 27, the closing movement of which is synchronized with the movement of the side folding buckets 31 via a cam mechanism. The transverse seam sealing device 32 is associated with a cutting device (not shown) for separating bags 35 from the hose 16.
Above the packaging material device 30 there is a clamping device 36 on each side of the mouthpiece 20, which is also firmly connected to the cross seam jaw housing 27. The clamping devices 36 have, for example, pneumatically operated holding jaws 37, the end faces 38 of which face the mouthpiece 20 are positively adapted to the mouthpiece 20.

Die Funktionsweise der erfindungsgemäßen Vorrichtung ist in den Fig.2 bis Fig.6 vereinfacht dargestellt, wobei der Einfachheit halber insbesondere auf eine Darstellung des Schlauches 16 und der Beutel 35 verzichtet wurde.The mode of operation of the device according to the invention is shown in simplified form in FIGS. 2 to 6, for the sake of simplicity in particular the hose 16 and the bag 35 have been omitted.

In einer Anfangsposition der Vorrichtung (Fig. 2) befindet sich das das Innenrohr 19 mit dem Mundstück 20 in einer angehobenen Position, so daß lediglich das Mundstück 20 aus dem Formrohr 12 austritt. Dies wird durch Beaufschlagung des Stellzylinders 25 mit einem entsprechenden Unterdruck erzielt. Die Förderbänder 18 fördern den Schlauch 16, der durch die Längsnahtsiegeleinrichtung 13 aus der Kunststoff-Folienbahn 14 gebildet wurde, kontinuierlich über das Formrohr 12 und das Mundstück 20. Gleichzeitig bewegt sich das Quernahtbackengehäuse 27 entgegen der Förderrichtung des Schlauches 16 aus einer abgesenkten Position nach oben, wobei sich die zuvor in einer weit geöffneten Position befindlichen Quernahtbacken 33 und die mit ihnen gekoppelte Packstoffaltvorrichtung 30 kurz vor Erreichen des oberen Totpunkts der Bewegungsbahn des Quernahtbackengehäuses 27 zu schließen beginnen. Bei der sich nach Erreichen des oberen Umkehrpunkts anschließenden, abwärts gerichteten Beschleunigungsphase des Quernahtbackengehäuses 27 wird die Fördergeschwindigkeit des Schlauches 16 mittels der Förderbänder 18 der Geschwindigkeit des Quernahtbakkengehäuses 27 angepasst. Wenn die Geschwindigkeit des Quernahtbakkengehäuses 27 und die des Schlauches 16 gleich sind, befindet sich der zur Bildung des Blockbodens nötige Überstand des Schlauches 16 unterhalb des Bodens 21 des Mundstücks 20. Gleichzeitig werden die zuvor in einer zurückgefahrenen Position befindlichen Haltebacken 37 der Klemmeinrichtungen 36 angesteuert und gelangen unter Zwischenlage des Schlauches 16 in formschlüssigem Kontakt mit dem Mundstück (Fig.3).
Daraufhin wird der Stellzylinder 25 belüftet, und das Mundstück 20 wird von dem Quernahtbackengehäuse 27 zusammen mit diesem mit einer der Fördergeschwindigkeit des Schlauches 16 entsprechenden Geschwindigkeit mit diesem parallel bewegt (Fig.4). Somit ergibt sich während der Abwärtsbewegung des Mundstücks 20 und des Quernahtbackengehäuses 27 ein konstanter Überhang des Schlauches 16 in Bezug auf den Boden 21. In dieser Phase wird von der Packstoffaltvorrichtung 30 mit dem Überhang des Schlauches 16 und mit Hilfe des Bodens 21 ein Blockboden gefaltet, sowie anschließend von den Quernahtbacken 33 eine Quernaht gebildet. Mit der Bildung der Quernaht geht gleichzeitig die Bildung einer Kopfquernaht an dem zuvor hergestellten Beutel 35 und dessen Abtrennung vom Schlauch 16 durch die Schneideinrichtung einher. Weiterhin wird, sobald die Quernahtbacken 33 geschlossen sind, durch das Innenrohr 19 ein Füllgut in den Schlauch 16 eingebracht. Anschließend werden die Haltebacken 37 wieder in ihre ursprüngliche Position zurückgefahren, und durch einen entsprechenden Unterdruck an dem Stellzylinder 25 beginnt sich das Mundstück 20 anzuheben, bis es wieder seine ursprüngliche, angehobene Position im Formrohr 12 erreicht hat (Fig.5). Das Quernahtbackengehäuse 27 befindet sich nun kurz vor seinem unteren Umkehrpunkt, währenddessen die Seitenfaltlöffel 31 der Packstoffaltvorrichtung 30 zurückgeschwenkt werden (Fig.6), und die Quernahtbacken 33 sich zu öffnen beginnen. Im unteren Umkehrpunkt des Quernahtbakkengehäuses 27 sind die Quernahtbacken 33 vollständig geöffnet. Nun beginnt das Quernahtbackengehäuse 27 wieder mit seiner Aufwärtsbewegung, wobei sich der weitere Verlauf wie oben beschrieben wiederholt.In an initial position of the device (FIG. 2), the inner tube 19 with the mouthpiece 20 is in a raised position, so that only the mouthpiece 20 emerges from the molded tube 12. This is achieved by applying a corresponding negative pressure to the actuating cylinder 25. The conveyor belts 18 continuously convey the hose 16, which was formed from the plastic film web 14 by the longitudinal seam sealing device 13, via the molded tube 12 and the mouthpiece 20. At the same time, the transverse seam jaw housing 27 moves upward from the lowered position counter to the conveying direction of the hose 16 , wherein the transverse seam jaws 33 previously in a wide open position and the packaging material device 30 coupled to them begin to close shortly before the top dead center of the movement path of the transverse seam jaw housing 27 is reached. During the downward acceleration phase of the cross-seam jaw housing 27 which follows after the upper turning point has been reached, the conveying speed of the hose 16 is adapted to the speed of the cross-seam jaw housing 27 by means of the conveyor belts 18. If the speed of the transverse seam jaw housing 27 and that of the hose 16 are the same, the protrusion of the hose 16 required to form the block bottom is below the base 21 of the mouthpiece 20. At the same time, the holding jaws 37 of the clamping devices 36 previously in a retracted position are actuated and come with the interposition of the hose 16 in positive contact with the mouthpiece (Fig.3).
The actuating cylinder 25 is then vented and the mouthpiece 20 is moved by the transverse seam jaw housing 27 together with the latter at a speed corresponding to the conveying speed of the hose 16 (FIG. 4). This results in the downward movement of the mouthpiece 20 and the Cross seam jaw housing 27 a constant overhang of the tube 16 with respect to the bottom 21. In this phase, the packaging material device 30 with the overhang of the tube 16 and with the help of the bottom 21 folds a block bottom, and then a cross seam is formed by the cross seam jaws 33. The formation of the transverse seam is accompanied by the formation of a head transverse seam on the previously produced bag 35 and its separation from the hose 16 by the cutting device. Furthermore, as soon as the transverse seam jaws 33 are closed, a filling material is introduced into the hose 16 through the inner tube 19. Then the holding jaws 37 are moved back into their original position, and by means of a corresponding negative pressure on the actuating cylinder 25, the mouthpiece 20 begins to rise until it has reached its original, raised position in the shaped tube 12 again (FIG. 5). The transverse seam jaw housing 27 is now shortly before its lower turning point, during which the side folding spoons 31 of the packaging material device 30 are pivoted back (FIG. 6), and the transverse seam jaws 33 begin to open. In the lower reversal point of the transverse seam jaw housing 27, the transverse seam jaws 33 are completely open. The transverse seam jaw housing 27 now begins its upward movement again, the further course being repeated as described above.

Ergänzend wird darauf hingewiesen, daß die Quernaht im Boden der Beutel 35 durch eine zusätzliche mechanische Vorrichtung oder mittels Druckluft umgelegt werden kann, wodurch ein ebener Boden erzielt wird.In addition, it is pointed out that the transverse seam in the bottom of the bags 35 can be folded over by an additional mechanical device or by means of compressed air, as a result of which a flat bottom is achieved.

Claims (7)

Verfahren zum Herstellen, Füllen und Verschließen von Beuteln (35), bei dem eine endlose Kunststoff-Folienbahn (14) mittels einer Schlauchformeinrichtung (10) und einer Längsnahtsiegeleinrichtung (13) zu einem von wenigstens einer Abzugseinrichtung (18) geförderten Schlauch (16) geformt wird, wobei während des weiteren Förderwegs Beutel (35) von einer mit einer Quernahtsiegeleinrichtung (32) verbundenen Schneideinrichtung von dem Schlauch (16) abgetrennt werden, dadurch gekennzeichnet, daß der Schlauch (16) kontinuierlich gefördert wird, daß ein aufund abbewegbares Mundstück (20) in einem bestimmten Bereich des Förderwegs des Schlauches (16) mit derselben Geschwindigkeit innenhalb und parallel mit dem Schlauch (16) bewegt wird, daß während dieses bestimmten Bereichs des Förderwegs anliegend an einen Boden (21) des Mundstücks (20) mit einem Überstand des Schlauches (16) mittels einer Falteinrichtung (30) ein Blockboden gefaltet wird, wobei die Falteinrichtung (30) mit der mit ihr verbundenen Quernahtsiegeleinrichtung (32) mit derselben Geschwindigkeit des Schlauches (16) bewegt wird, und daß anschließend das Mundstück (20) in eine ursprüngliche, angehobene Position zurückgebracht wird, währenddessen ein Füllgut in den so geformten Schlauch (16) eingebracht wird.Method for producing, filling and closing bags (35), in which an endless plastic film web (14) is formed by means of a tube forming device (10) and a longitudinal seam sealing device (13) into a tube (16) conveyed by at least one extraction device (18) whereby, during the further conveying path, bags (35) are separated from the hose (16) by a cutting device connected to a transverse seam sealing device (32), characterized in that the hose (16) is continuously conveyed so that a mouthpiece (20 ) is moved in a certain area of the conveying path of the hose (16) at the same speed inside and parallel to the hose (16) that during this certain area of the conveying path lies against a bottom (21) of the mouthpiece (20) with an overhang of the Hose (16) by means of a folding device (30) a block bottom is folded, the folding device (30) with de r connected with it transverse seam sealing device (32) at the same speed of the tube (16), and that the mouthpiece (20) is then returned to an original, raised position, during which a filling material is introduced into the tube (16) thus formed. Vorrichtung zum Herstellen, Füllen und Verschließen von Beuteln, mit einer Schlauchformeinrichtung (10), bestehend aus einer Formschulter (11) und einem Formrohr (12) zur Formung eines Schlauches (16) aus einer endlosen Kunststoff-Folienbahn (14), mit einer Längsnahtsiegeleinrichtung (13), mit wenigstens einer Abzugseinrichtung (18) für den gebildeten Schlauch (16), mit einer Quernahtsiegeleinrichtung (32), sowie mit einer Falteinrichtung (30) zur Bildung eines Blockbodens an jeweils einem Ende des Schlauches (16), dadurch gekennzeichnet, daß an der Schlauchformeinrichtung (10) ein aufund abbewegbares Innenrohr (19) mit einem damit verbundenem Mundstück (20) angeordnet sind, daß dem Mundstück (20) eine Einrichtung (36) zugeordnet ist, die dieses in einem bestimmten Bereich des Förderwegs des Schlauches (16) synchron mit dessen Geschwindigkeit in dessen Förderrichtung mitbewegt, daß die Falteinrichtung (30) mit der Quernahtsiegeleinrichtung (32) fest verbunden ist, und daß die Falteinrichtung (30) und die Quernahtsiegeleinrichtung (32) längs des Förderwegs des Schlauches (16) aufund abbewegbar sind.Device for producing, filling and closing bags, with a tube forming device (10) consisting of a shaped shoulder (11) and a shaped tube (12) for forming a tube (16) from an endless plastic film web (14), with a longitudinal seam sealing device (13), with at least one extraction device (18) for the hose (16) formed, with a transverse seam sealing device (32), and with a folding device (30) for forming a block bottom at each end of the hose (16), characterized in that that an upward and downward movable inner tube (19) with a mouthpiece (20) connected to it is arranged on the tube shaping device (10), that the mouthpiece (20) is associated with a device (36) which in a certain region of the conveying path of the tube ( 16) moves synchronously with its speed in its conveying direction, that the folding device (30) is firmly connected to the transverse seam sealing device (32), and that d The folding device (30) and the transverse seam sealing device (32) can be moved up and down along the conveying path of the hose (16). Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Form des Mundstücks (20) an seinem einen Ende dem Formrohr (12) und an seinem anderen Ende dem zu faltenden Blockboden angepasst ist.Apparatus according to claim 2, characterized in that the shape of the mouthpiece (20) is adapted at one end to the molded tube (12) and at the other end to the block base to be folded. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß das Mundstück (20) im Bereich seines Bodens (21) eine Öffnung (22) für das Füllgut aufweist.Apparatus according to claim 3 or 4, characterized in that the mouthpiece (20) has an opening (22) for the filling material in the region of its base (21). Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß das Mundstück (20) im Bereich seines Austritts (17) aus dem Formrohr (12) von diesem nahezu formschlüssig umschlossen ist.Device according to one of claims 2 to 4, characterized in that the mouthpiece (20) in the area of its exit (17) from the molded tube (12) is almost positively enclosed by the latter. Vorrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß die Einrichtung zur Bewegung des Mundstücks (20) aus wenigstens zwei Klemmeinrichtungen (36) besteht, die beiderseits des Mundstücks (20) fest mit der Quernahtsiegeleinrichtung (32) verbunden sind, und daß die Klemmeinrichtungen (36) quer zur Förderrichtung des Schlauches (16) bewegbare Haltebacken (37) haben, deren Stirnflächen (38) der Form des Mundstücks (20) formschlüssig angepasst sind.Device according to one of claims 2 to 5, characterized in that the device for moving the mouthpiece (20) consists of at least two clamping devices (36) which are fixedly connected to the transverse seam sealing device (32) on both sides of the mouthpiece (20), and that the clamping devices (36) have holding jaws (37) which can be moved transversely to the conveying direction of the hose (16), the end faces (38) of which are positively adapted to the shape of the mouthpiece (20). Vorrichtung nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß das Innenrohr (19) über ein Gestänge (23) mit einem Stellzylinder (25) zum Anheben des Innenrohrs (19) im Formrohr (12) verbunden ist.Device according to one of claims 2 to 6, characterized in that the inner tube (19) is connected via a linkage (23) to an actuating cylinder (25) for lifting the inner tube (19) in the shaped tube (12).
EP94115070A 1993-10-19 1994-09-24 Method and device for forming, filling and sealing bags Expired - Lifetime EP0648673B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4335577 1993-10-19
DE4335577A DE4335577A1 (en) 1993-10-19 1993-10-19 Method and device for manufacturing, filling and closing bags

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EP0648673B1 EP0648673B1 (en) 1998-03-04

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US5505040A (en) 1996-04-09
DE59405362D1 (en) 1998-04-09
DE4335577A1 (en) 1995-04-20
EP0648673B1 (en) 1998-03-04

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