EP1857369B1 - Filling machine for filling open, sealable bags with lateral folds - Google Patents

Filling machine for filling open, sealable bags with lateral folds Download PDF

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Publication number
EP1857369B1
EP1857369B1 EP07107625A EP07107625A EP1857369B1 EP 1857369 B1 EP1857369 B1 EP 1857369B1 EP 07107625 A EP07107625 A EP 07107625A EP 07107625 A EP07107625 A EP 07107625A EP 1857369 B1 EP1857369 B1 EP 1857369B1
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EP
European Patent Office
Prior art keywords
spreading
filling machine
machine according
jaws
guide
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EP07107625A
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German (de)
French (fr)
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EP1857369A2 (en
EP1857369A3 (en
Inventor
Heinz RÜLKER
Heinz-Peter Felling
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Haver and Boecker OHG
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Haver and Boecker OHG
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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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
    • B65B43/54—Means for supporting containers or receptacles during the filling operation
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/30—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by grippers engaging opposed walls, e.g. suction-operated
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
    • B65B43/46—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers
    • B65B43/465—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers for bags

Definitions

  • the invention relates to a filling machine according to the preamble of claim 1.
  • the corner welds usually extend at an angle of 45 ° to the longitudinal edges of a gusseted bag.
  • the corner weld seams assigned to the filling opening are also produced in the course of assembling the sacks. As a result, only the area between the corner welds is available for the filling opening.
  • the gussets remain closed, that is, the layers of material are close together.
  • a generic filling machine is from the US 2004/0060266 known.
  • the invention has for its object to design a filling machine of the type described in more detail so that in a structurally simple manner and with known from the industry components perfectly tight welds can be made after filling the gusseted bags.
  • the spreading and aligning jaws are movable in such a way along arcuate paths and now adapted to the inevitably resulting forms of gusseted bags that spread between the Ecksch spanältten opening is stretched or straightened and erect when the spreading and alignment jaws of both sides are moved away from each other so that tensile forces act on the areas of the welds, effectively preventing the formation of wrinkles.
  • the guide rods are designed so that a sufficient spread of the filling opening is ensured by the applied tensile stresses after removal
  • the spreading and alignment jaws of each side are mounted between two guide rods. This avoids hiding or tilting.
  • the guide rods on both sides must be moved synchronously, i. E. moved towards each other and moved away from each other. It is therefore preferably provided that the drive of the guide linkage is synchronized on one side with that of the guide linkage on the other side.
  • each guide linkage is designed as a multi-link chain, and that the spreading and Ausrichtgreifern remote from the ends of the guide lever of the multi-joint chains are pivotable about stationary axes.
  • the multi-link chains offer numerous design options with regard to the course of the arcuate paths.
  • they are composed of simple components, such as guide arm and guide lever, so that the design can work constructively simple and reliable.
  • the spreading and aligning jaws are movable in such a way along arcuate paths and now adapted to the inevitably resulting forms of gusseted bags that the opening lying between the Ecksch spanähten is spread or straightened and erected when the spreading and alignment of both sides are moved away from each other so that tensile forces act on the areas of the welds, effectively preventing the formation of wrinkles.
  • the guide rods are designed so that a sufficient spread of the filling opening is ensured by the applied tensile stresses after removal.
  • the spreading and alignment jaws of each side are mounted between two guide rods. This avoids jamming or tilting.
  • the guide rods on both sides must be moved synchronously, i. E. moved towards each other and moved away from each other. It is therefore preferably provided that the drive of the guide linkage is synchronized on one side with that of the guide linkage on the other side.
  • each guide linkage is designed as a multi-link chain, and that the spreading and Ausrichtgreifern remote from the ends of the guide lever of the multi-joint chains are pivotable about stationary axes.
  • the multi-link chains offer numerous design options with regard to the course of the arcuate paths.
  • they are composed of simple components, such as guide arm and guide lever, so that the design can work constructively simple and reliable.
  • the spreader and Ausrichtbacken facing ends of the multi-joint chains are hinged to a jaw receiving, on which the spreading and alignment jaws are pivotally mounted.
  • Each jaw holder therefore transmits the movement to the spreading and alignment jaws.
  • two bolts are used in each gripper receiving, on which the spreading and alignment jaws are pivotally mounted. To open the spreading and alignment jaws perform these opposite pivoting movements while they run towards each other during the closing movement.
  • Each gripper receptacle forms the coupling of the multi-joint chain.
  • each multi-link chain consists of a parallelogram-like four-link chain, that is, two guide levers.
  • the guide levers of each four-bar chain are in inclined positions relative to one another, i.e. during the movement of the spreading and aligning jaws they also perform a tilting movement. It is therefore provided that the distance between two coupling-side articulation points of the guide lever is greater than the distance of two stationary bolts.
  • the spreading and alignment jaws are inclined according to the solution of claim 2 in the contracted position against the vertical, wherein the distance of the free ends of the spreading and alignment jaws may also be less than in the spread position.
  • the mutually facing ends of the spreading and alignment jaws are deeper in the closed position than the arranged on the jaw seats ends.
  • the spreading and aligning jaws are moved away from one another and are horizontal in the end position in this embodiment.
  • the path of the spreading and aligning jaws of the conical shape of the gusseted bag can be adapted to the filler neck, it is provided that the distances of stationary or movable pivot points are adjustable in order to adapt the arcuate path of the spreading and alignment jaws to the conical shape the bag on the filler neck to adjust the inclination of the guide lever to each other.
  • the invention also provides the method of claim 14.
  • the Indian FIG. 1 illustrated gusseted bag 1 is made of a weldable material.
  • the gusseted bag 1 consists of a plastic film.
  • the corner welds 3, 4 are created in the four corner regions, which, based on the flat laid state of the gusseted bag 1, extend at an angle of 45 ° to the longitudinal edges. They extend across the width of the gussets.
  • the sealing seam 2 serving for the closure is produced by means of a welding device, which is at a distance to the upper bag edge lies.
  • the weld 2 also extends over the region of the gussets.
  • FIG. 2 shows the spreading and alignment jaws 5, 6, which are associated with the left side of the gusseted bag 1.
  • the right side of the gusseted bag 1 associated spreading and alignment jaws are mounted in mirror image.
  • the spreading and alignment jaws 5, 6 are pivotable about bolts 7, 8.
  • In the FIG. 2 is the closed position of the spreading and alignment jaws 5, 6 shown, in which they according to the Figures 3 and 4 Detect the gusseted bag 1 in the area of a gusset.
  • the bolts 7, 8 are inserted into a jaw receptacle 14.
  • This jaw receptacle is suspended on two lateral multi-joint chains, which are formed in the illustrated embodiment as a parallelogram-like four-bar links.
  • the jaw receptacle 14 is suspended on one side on guide levers 9, 10, and the other side is suspended on guide levers 11, 12.
  • This four-bar chain is actuated by a single piston-cylinder unit 13.
  • the ends of the guide levers 9-12 facing away from the spreading and alignment jaws 5, 6 or the jaw receptacle 14 are mounted on stationary bolts. Also in Fig. 2 to recognize a drive 18 (eg pneumatic) for the spreading and alignment jaws 5, 6th
  • FIG. 3 shows the spreading and alignment jaws 5, 6, the jaw seats 14 and the guide rods in the retracted position.
  • the spreading and alignment jaws 5, 6 have been moved towards each other.
  • not yet filled gusseted bag 1 at least in the upper region has a conical shape, while in the lower region, the bag walls are still together.
  • the guide rods are pivoted by appropriate controls of the piston-cylinder units 13, so that the spreading and alignment jaws 5, 6 move apart, ie, the distance is increased, at the same time the spreading and alignment jaws in this step about the hinge points 16, 17 of the guide rod 9, 10, 11, 12 tilted.
  • the spreading and alignment jaws 5, 6 thus describe each arcuate paths, which are indicated schematically by the arrows P 1 and P2.
  • the (imaginary) pivot axes of these tracks are vertically below the arcuate tracks themselves or lower than this.
  • all hinge points 16, 17 of the guide linkage advantageously lie vertically lower than the spreading and aligning jaws 5, 6, which are held in the jaw receptacle 14.
  • the vertical is in the Fig. 3 defined by the indicated center line of the bag 1.
  • the gripped sacks S and S2 are moved in the same way, i. pulled apart and upwards on the respective arcuate path.
  • the respective arcuate path of the spreading and alignment jaws 5, 6 of the conical shape of the bag can be adapted to the filler neck.
  • the filling machine is equipped with fixed stops 15, which are fixed to bolts, so that they are adjustable.
  • the filler neck on an arcuate path movable spreading and alignment jaws 5, 6 are assigned, which are moved after removing the filled bag from the filler under enlargement of their distance to the outside, so that the area in which the weld 2 is to be tensioned, so that no leading to a leak wrinkles.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Bag Frames (AREA)
  • Package Closures (AREA)

Abstract

The machine has a side gusseted sack (1) provided with corner welding seams (2, 3) in corner areas and with a filling tube, and a welding machine is provided for attaching the welding seams downstream to the filling tube. Spreading and aligning flanges are arranged in pairs and determine the side gusseted sack in side gusseted areas. The flanges are arranged at guide bars such that the flanges are movable along arc-shaped paths, so that areas of the flanges are turned upwards and outwards in the arc-shaped paths. An independent claim is also included for a method for spreading a sack with a filling machine.

Description

Die Erfindung bezieht sich auf eine Füllmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a filling machine according to the preamble of claim 1.

Mit der in Rede stehenden Füllmaschinc werden die unterschiedlichsten Füllgüter abgefüllt. Die Eckschweißnähte verlaufen üblicherweise unter einem Winkel von 45° zu den Längskanten eines Seitenfaltensackes. Auch die der Einfüllöffnung zugeordneten Eckschweißnähte werden im Zuge der Konfektionierung der Säcke hergestellt. Daraus ergibt sich, dass für die Einfüllöffnung nur der Bereich zwischen den Eckschweißnähten zur Verfügung steht. Während des Füllvorganges bleiben die Seitenfalten geschlossen, d.h., die Materiallagen liegen dicht aneinander.With the Füllmaschinc in question the most diverse contents are filled. The corner welds usually extend at an angle of 45 ° to the longitudinal edges of a gusseted bag. The corner weld seams assigned to the filling opening are also produced in the course of assembling the sacks. As a result, only the area between the corner welds is available for the filling opening. During the filling process, the gussets remain closed, that is, the layers of material are close together.

Aus dieser Form der Säcke ergibt sich, dass sie nach dem Anhängen am Füllstutzen konisch ausgebildet sind, wobei der untere Bereich noch flachgelegt ist. Aus der Form des Sackes am Füllstutzen ergibt sich indirekt eine Faltenbildung im Bereich der später herzustellenden Schweißnaht. Durch das Schließen herkömmlicher Spreizbacken stehen diese, bedingt durch die konische Form des Sackes, nicht mehr parallel zur oberen Sackkante. Durch den linearen Spann- bzw. Spreizvorgang wird der obere Bereich des Sackes gespannt, wobei durch die relative Schiefstellung der Backen zum Sack Falten in den Sacküberstand gezogen werden, die in der Schweißeinrichtung zu Kanälen führen können, wodurch die Schweißnaht nicht dicht ist.From this form of bags it follows that they are conical after attachment to the filler neck, the lower portion is still laid flat. From the shape of the bag at the filler neck results indirectly wrinkling in the area of the weld to be produced later. Due to the closing of conventional spreader jaws, they are no longer parallel to the upper sack edge due to the conical shape of the sack. By the linear clamping or spreading the upper portion of the bag is stretched, being pulled by the relative inclination of the jaws to the bag folds in the bag projection, which can lead to channels in the welding device, whereby the weld is not tight.

Da auch pulverförmige Füllgüter in die Seitenfaltensäcke eingefüllt werden, stellt sich die Forderung, dass die Schweißnähte sehr dicht sein müssen.Since powdery products are filled into the gusseted bags, there is the demand that the welds must be very tight.

Eine gattungsgemäße Füllmaschine ist aus der US 2004/0060266 bekannt.A generic filling machine is from the US 2004/0060266 known.

Der Erfindung liegt die Aufgabe zugrunde, eine Füllmaschine der eingangs näher beschriebenen Art so zu gestalten, dass in konstruktiv einfacher Weise und mit aus der Branche bekannten Bauteilen vollkommen dichte Schweißnähte nach dem Füllen der Seitenfaltensäcke hergestellt werden können.The invention has for its object to design a filling machine of the type described in more detail so that in a structurally simple manner and with known from the industry components perfectly tight welds can be made after filling the gusseted bags.

Die Erfindung löst diese Aufgabe durch die Gegenstände der Ansprüche 1 und 13.The invention solves this problem by the subject matter of claims 1 and 13.

Die Spreiz- und Ausrichtbacken sind derart längs bogenförmiger Bahnen verfahrbar und nunmehr an die sich zwangsläufig ergebenden Formen der Seitenfaltensäcke angepasst, dass die zwischen den Eckschweißnältten liegende Öffnung gespreizt bzw. gespannt und aufgerichtet wird, wenn die Spreiz- und Ausrichtbacken beider Seiten voneinander weg bewegt werden, so dass auf die Bereiche der Schweißnähte Zugkräfte einwirken, wodurch die Bildung von Falten wirksam vermieden wird. Die Führungsgestänge sind so ausgelegt, dass eine ausreichende Spreizung der Einfüllöffnung durch die einwirkenden Zugspannungen nach dem Abnehmen gewährleisten istThe spreading and aligning jaws are movable in such a way along arcuate paths and now adapted to the inevitably resulting forms of gusseted bags that spread between the Eckschweißnältten opening is stretched or straightened and erect when the spreading and alignment jaws of both sides are moved away from each other so that tensile forces act on the areas of the welds, effectively preventing the formation of wrinkles. The guide rods are designed so that a sufficient spread of the filling opening is ensured by the applied tensile stresses after removal

Zwar ist das Spreizen auf bogenförmigen Bahnen an sich bekannt, so aus der DE 92 07 6709 . Da hier die weiter vom Sack entfernten Schwenkachsen jedoch oberhalb des Sackes liegen, wird der Sack zwar nach außen aufgespreizt, aber in den gegriffenen Ecken nicht in eine horizontale Stellung bewegt, was das eingangs erläuterte Problem eher noch verschlimmert.Although the spreading on arcuate paths is known per se, so from the DE 92 07 6709 , However, since the further away from the sack pivot axes are above the bag, the bag is indeed spread outwards, but not moved in the gripped corners in a horizontal position, which aggravates the above-explained problem rather.

Damit die Spreiz- und Ausrichtbacken exakt geführt werden, ist vorgesehen, dass die Spreiz- und Ausrichtbacken jeder Seite zwischen zwei Führungsgestängen montiert sind. Dadurch wird ein Verdecken oder Verkanten vermieden. Die Führungsgestänge beider Seiten müssen sinngemäß synchron bewegt werden, d.h. aufeinander zu bewegt und voneinander weg bewegt werden. Es ist deshalb bevorzugt vorgesehen, dass der Antrieb des Führungsgestänges auf der einen Seite mit dem des Führungsgestänges auf der anderen Seite synchronisiert ist.So that the spreading and alignment jaws are guided exactly, it is provided that the spreading and alignment jaws of each side are mounted between two guide rods. This avoids hiding or tilting. The guide rods on both sides must be moved synchronously, i. E. moved towards each other and moved away from each other. It is therefore preferably provided that the drive of the guide linkage is synchronized on one side with that of the guide linkage on the other side.

Eine konstruktiv einfache Lösung, die jedoch betriebssicher und weitgehend verschleißfrei arbeitet, ist gegeben, wenn jedes Führungsgestänge als Vielgelenkkette ausgebildet ist, und dass die den Spreiz- und Ausrichtgreifern abgewandten Enden der Führungshebel der Vielgelenkketten um ortsfeste Achsen schwenkbar sind. Die Vielgelenkketten bieten zahlreiche Gestaltungsmöglichkeiten hinsichtlich des Verlaufs der bogenförmigen Bahnen. Darüber hinaus werden sie aus einfachen Bauteilen, wie z.B. Führungslenker und Führungshebel zusammengesetzt, so dass die Ausführung konstruktiv einfach und betriebssicher arbeiten kann.A structurally simple solution, however, which operates reliably and largely wear-free, is given if each guide linkage is designed as a multi-link chain, and that the spreading and Ausrichtgreifern remote from the ends of the guide lever of the multi-joint chains are pivotable about stationary axes. The multi-link chains offer numerous design options with regard to the course of the arcuate paths. In addition, they are composed of simple components, such as guide arm and guide lever, so that the design can work constructively simple and reliable.

Die Spreiz- und Ausrichtbacken sind derart längs bogenförmiger Bahnen verfahrbar und nunmehr an die sich zwangsläufig ergebenden Formen der Seitenfaltensäcke angepasst, dass die zwischen den Eckschweißnähten liegende Öffnung gespreizt bzw. gespannt und aufgerichtet wird, wenn die Spreiz- und Ausrichtbacken beider Seiten voneinander weg bewegt werden, so dass auf die Bereiche der Schweißnähte Zugkräfte einwirken, wodurch die Bildung von Falten wirksam vermieden wird. Die Führungsgestänge sind so ausgelegt, dass eine ausreichende Spreizung der Einfüllöffnung durch die einwirkenden Zugspannungen nach dem Abnehmen gewährleistet ist.The spreading and aligning jaws are movable in such a way along arcuate paths and now adapted to the inevitably resulting forms of gusseted bags that the opening lying between the Eckschweißnähten is spread or straightened and erected when the spreading and alignment of both sides are moved away from each other so that tensile forces act on the areas of the welds, effectively preventing the formation of wrinkles. The guide rods are designed so that a sufficient spread of the filling opening is ensured by the applied tensile stresses after removal.

Zwar ist das Spreizen auf bogenförmigen Bahnen an sich bekannt, so aus der DE 92 07 6709 . Da hier die weiter vom Sack entfernten Schwenkachsen jedoch oberhalb des Sackes liegen, wird der Sack zwar nach außen aufgespreizt, aber in den gegriffenen Ecken nicht in eine horizontale Stellung bewegt, was das eingangs erläuterte Problem eher noch verschlimmert.Although the spreading on arcuate paths is known per se, so from the DE 92 07 6709 , However, since the further away from the sack pivot axes are above the bag, the bag is indeed spread outwards, but not moved in the gripped corners in a horizontal position, which aggravates the above-explained problem rather.

Damit die Spreiz- und Ausrichtbacken exakt geführt werden, ist vorgesehen, dass die Spreiz- und Ausrichtbacken jeder Seite zwischen zwei Führungsgestängen montiert sind. Dadurch wird ein Verecken oder Verkanten vermieden. Die Führungsgestänge beider Seiten müssen sinngemäß synchron bewegt werden, d.h. aufeinander zu bewegt und voneinander weg bewegt werden. Es ist deshalb bevorzugt vorgesehen, dass der Antrieb des Führungsgestänges auf der einen Seite mit dem des Führungsgestänges auf der anderen Seite synchronisiert ist.So that the spreading and alignment jaws are guided exactly, it is provided that the spreading and alignment jaws of each side are mounted between two guide rods. This avoids jamming or tilting. The guide rods on both sides must be moved synchronously, i. E. moved towards each other and moved away from each other. It is therefore preferably provided that the drive of the guide linkage is synchronized on one side with that of the guide linkage on the other side.

Eine konstruktiv einfache Lösung, die jedoch betriebssicher und weitgehend verschleißfrei arbeitet, ist gegeben, wenn jedes Führungsgestänge als Vielgelenkkette ausgebildet ist, und dass die den Spreiz- und Ausrichtgreifern abgewandten Enden der Führungshebel der Vielgelenkketten um ortsfeste Achsen schwenkbar sind. Die Vielgelenkketten bieten zahlreiche Gestaltungsmöglichkeiten hinsichtlich des Verlaufs der bogenförmigen Bahnen. Darüber hinaus werden sie aus einfachen Bauteilen, wie z.B. Führungslenker und Führungshebel zusammengesetzt, so dass die Ausführung konstruktiv einfach und betriebssicher arbeiten kann.A structurally simple solution, however, which operates reliably and largely wear-free, is given if each guide linkage is designed as a multi-link chain, and that the spreading and Ausrichtgreifern remote from the ends of the guide lever of the multi-joint chains are pivotable about stationary axes. The multi-link chains offer numerous design options with regard to the course of the arcuate paths. In addition, they are composed of simple components, such as guide arm and guide lever, so that the design can work constructively simple and reliable.

Die den Spreiz- und Ausrichtbacken zugewandten Enden der Vielgelenkketten sind an einer Backenaufnahme angelenkt, an der die Spreiz- und Ausrichtbacken schwenkbar gelagert sind. Jede Backenaufnahme überträgt daher die Bewegung auf die Spreiz- und Ausrichtbacken. Zur Lagerung der Spreiz- und Ausrichtbacken sind in jede Greiferaufnahme zwei Bolzen eingesetzt, auf denen die Spreiz- und Ausrichtbacken schwenkbar gelagert sind. Zum Öffnen der Spreiz- und Ausrichtbacken führen diese entgegengesetzte Schwenkbewegungen aus, während sie bei der Schließbewegung aufeinander zu laufen. Jede Greiferaufnahme bildet die Koppel der Vielgelenkkette.The spreader and Ausrichtbacken facing ends of the multi-joint chains are hinged to a jaw receiving, on which the spreading and alignment jaws are pivotally mounted. Each jaw holder therefore transmits the movement to the spreading and alignment jaws. For storage of the spreading and alignment jaws, two bolts are used in each gripper receiving, on which the spreading and alignment jaws are pivotally mounted. To open the spreading and alignment jaws perform these opposite pivoting movements while they run towards each other during the closing movement. Each gripper receptacle forms the coupling of the multi-joint chain.

In bevorzugter Ausführung besteht jede Mehrgelenkkette aus einer parallelogrammartigen Viergelenkkette, d.h., aus zwei Führungshebeln. Zur Anpassung an die an den Füllstutzen angehängten Säcke ist vorgesehen, dass die Führungshebel jeder Viergelenkkette in Schrägstellungen zueinander stehen, d.h., während der Bewegung der Spreiz- und Ausrichtbacken führen diese auch eine Kippbewegung durch. Es ist deshalb vorgesehen, das der Abstand zwischen zwei koppelseitigen Anlenkpunkten der Führungshebel größer ist als der Abstand von zwei ortsfesten Bolzen.In a preferred embodiment, each multi-link chain consists of a parallelogram-like four-link chain, that is, two guide levers. In order to adapt to the sacks attached to the filler neck, it is provided that the guide levers of each four-bar chain are in inclined positions relative to one another, i.e. during the movement of the spreading and aligning jaws they also perform a tilting movement. It is therefore provided that the distance between two coupling-side articulation points of the guide lever is greater than the distance of two stationary bolts.

Es wird derart beispielhaft erreicht, dass die Spreiz- und Ausrichtbacken gemäß der Lösung des Anspruchs 2 in der zusammengefahrenen Stellung gegen die Vertikale geneigt sind, wobei der Abstand der freien Enden der Spreiz- und Ausrichtbacken auch geringer sein kann als in der gespreizten Stellung. Die einander zugewandt liegenden Enden der Spreiz- und Ausrichtbacken liegen in der geschlossenen Stellung tiefer als die an den Backenaufnahmen angeordneten Enden. Zur Ausrichtung der Schweißnahtbereiche werden die Spreiz- und Ausrichtbacken voneinander weg bewegt und stehen in der Endstellung in dieser Ausführungsvariante horizontal.It is achieved by way of example that the spreading and alignment jaws are inclined according to the solution of claim 2 in the contracted position against the vertical, wherein the distance of the free ends of the spreading and alignment jaws may also be less than in the spread position. The mutually facing ends of the spreading and alignment jaws are deeper in the closed position than the arranged on the jaw seats ends. For alignment of the weld seam areas, the spreading and aligning jaws are moved away from one another and are horizontal in the end position in this embodiment.

Damit die Bahn der Spreiz- und Ausrichtbacken der konischen Form des Seitenfaltensackes am Füllstutzen angepasst werden kann, ist vorgesehen, dass die Abstände der im Betrieb ortsfesten oder beweglichen Anlenkpunkte verstellbar sind, um zur Anpassung der bogenförmigen Bahn der Spreiz- und Ausrichtbacken an die konische Form des Sackes am Füllstutzen die Schrägstellung der Führungshebel zueinander einzustellen.So that the path of the spreading and aligning jaws of the conical shape of the gusseted bag can be adapted to the filler neck, it is provided that the distances of stationary or movable pivot points are adjustable in order to adapt the arcuate path of the spreading and alignment jaws to the conical shape the bag on the filler neck to adjust the inclination of the guide lever to each other.

Damit die von den Spreiz- und Ausrichtbacken ausgeübten Zugkräfte nicht zu Beschädigungen der Schweißnahtbereiche führen, ist vorgesehen, dass zumindest die Schwenkbewegung eines Führungsgestänges jeder Seite zwecks Straffens der Schweißnahtbereiche durch ortsfeste, jedoch einstellbare Anschläge begrenzt ist.In order that the tensile forces exerted by the spreading and aligning jaws do not lead to damage to the weld seam areas, it is provided that at least the pivoting movement of a guide linkage of each side is limited by stationary but adjustable stops for the purpose of tightening the weld seam areas.

Vorteilhafte Ausgestaltungen sind den Unteransprüchen zu entnehmen. Anhand der beiliegenden Zeichnungen wird die Erfindung noch näher erläutert.Advantageous embodiments can be found in the dependent claims. Reference to the accompanying drawings, the invention will be explained in more detail.

Die Erfindung schafft auch das Verfahren nach Anspruch 14.The invention also provides the method of claim 14.

Es zeigen:

Figur 1
den oberen Bereich eines gefüllten, mittels einer Schweißnaht verschlossenen Seitenfaltensackes in perspektivischer Darstellung
Figur 2
die Spreiz- und Ausrichtbacken einschließlich des Führungsgestänges und der Backenaufnahme in perspektivischer Darstellung
Figur 3
die Spreiz- und Ausrichtbacken einschließlich der Führungsgestänge in der zusammengefahrenen Stellung und
Figur 4
eine der Figur 3 entsprechende Darstellung, jedoch in der gespreizten Stellung.
Show it:
FIG. 1
the upper portion of a filled, closed by a weld gusseted sack in a perspective view
FIG. 2
the spreading and alignment jaws including the guide rod and the jaw holder in perspective view
FIG. 3
the spreading and alignment jaws including the guide rods in the retracted position and
FIG. 4
one of the FIG. 3 corresponding representation, but in the spread position.

Der in der Figur 1 dargestellte Seitenfaltensack 1 ist aus einem schweißfähigen Material hergestellt. In bevorzugter Ausführung besteht der Seitenfaltensack 1 aus einer Kunststofffolie. Ebenfalls werden in den vier Eckbereichen die Eckschweißnähte 3, 4 erstellt, die, bezogen auf den flachgelegten Zustand des Seitenfaltensackes 1, unter einem Winkel von 45° zu den Längskanten verlaufen. Sie erstrecken sich über die Breite der Seitenfalten. Nach dem Füllen des Seitenfaltensackes 1 und nach dem Abnehmen vom Füllstutzen wird mittels einer Schweißeinrichtung die dem Verschluss dienende Schweißnaht 2 hergestellt, die in einem Abstand zum oberen Sackrand liegt. Im dargestellten Ausführungsbeispiel erstreckt sich die Schweißnaht 2 auch über den Bereich der Seitenfalten.The Indian FIG. 1 illustrated gusseted bag 1 is made of a weldable material. In a preferred embodiment, the gusseted bag 1 consists of a plastic film. Also, the corner welds 3, 4 are created in the four corner regions, which, based on the flat laid state of the gusseted bag 1, extend at an angle of 45 ° to the longitudinal edges. They extend across the width of the gussets. After filling the gusseted bag 1 and after removal from the filler neck, the sealing seam 2 serving for the closure is produced by means of a welding device, which is at a distance to the upper bag edge lies. In the illustrated embodiment, the weld 2 also extends over the region of the gussets.

Die Figur 2 zeigt die Spreiz- und Ausrichtbacken 5, 6, die der linken Seite des Seitenfaltensackes 1 zugeordnet sind. Die der rechten Seite des Seitenfaltensackes 1 zugeordneten Spreiz- und Ausrichtbacken sind spiegelbildlich montiert. Die Spreiz- und Ausrichtbacken 5, 6 sind um Bolzen 7, 8 schwenkbar. In der Figur 2 ist die Schließstellung der Spreiz- und Ausrichtbacken 5, 6 dargestellt, in der sie gemäß den Figuren 3 und 4 den Seitenfaltensack 1 im Bereich einer Seitenfalte erfassen. Die Bolzen 7, 8 sind in eine Backenaufnahme 14 eingesetzt. Diese Backenaufnahme ist an zwei seitlichen Vielgelenkketten aufgehängt, die im dargestellten Ausführungsbeispiel als parallelogrammartige Viergelenkketten ausgebildet sind. Demzufolge ist die Backenaufnahme 14 an einer Seite an Führungshebeln 9, 10 aufgehängt, und die andere Seite ist an Führungshebeln 11, 12 aufgehängt. Diese Viergelenkkette wird durch eine einzige Kolbenzylindereinheit 13 betätigt. Die den Spreiz- und Ausrichtbacken 5, 6 bzw. der Backenaufnahme 14 abgewandt liegenden Enden der Führungshebel 9-12 sind auf ortsfesten Bolzen gelagert. Ebenfalls in Fig. 2 zu erkennen ist ein Antrieb 18 (z.B. pneumatisch) für die Spreiz- und Ausrichtbacken 5, 6.The FIG. 2 shows the spreading and alignment jaws 5, 6, which are associated with the left side of the gusseted bag 1. The right side of the gusseted bag 1 associated spreading and alignment jaws are mounted in mirror image. The spreading and alignment jaws 5, 6 are pivotable about bolts 7, 8. In the FIG. 2 is the closed position of the spreading and alignment jaws 5, 6 shown, in which they according to the Figures 3 and 4 Detect the gusseted bag 1 in the area of a gusset. The bolts 7, 8 are inserted into a jaw receptacle 14. This jaw receptacle is suspended on two lateral multi-joint chains, which are formed in the illustrated embodiment as a parallelogram-like four-bar links. Accordingly, the jaw receptacle 14 is suspended on one side on guide levers 9, 10, and the other side is suspended on guide levers 11, 12. This four-bar chain is actuated by a single piston-cylinder unit 13. The ends of the guide levers 9-12 facing away from the spreading and alignment jaws 5, 6 or the jaw receptacle 14 are mounted on stationary bolts. Also in Fig. 2 to recognize a drive 18 (eg pneumatic) for the spreading and alignment jaws 5, 6th

Die Figur 3 zeigt die Spreiz- und Ausrichtbacken 5, 6, die Backenaufnahmen 14 und die Führungsgestänge in der zusammengefahrenen Stellung. Dabei sind die Spreiz- und Ausrichtbacken 5, 6 aufeinander zu gefahren worden. In nicht näher dargestellter Weise hat der an den Füllstutzen angehängte, noch nicht gefüllte Seitenfaltensack 1 zumindest im oberen Bereich eine konische Form, während im unteren Bereich die Sackwandungen noch aneinander liegen.The FIG. 3 shows the spreading and alignment jaws 5, 6, the jaw seats 14 and the guide rods in the retracted position. The spreading and alignment jaws 5, 6 have been moved towards each other. In a manner not shown attached to the filler neck, not yet filled gusseted bag 1 at least in the upper region has a conical shape, while in the lower region, the bag walls are still together.

Nach dem Abnehmen des gefüllten Seitenfaltensackes 1 vom Füllstutzen werden durch entsprechende Steuerungen der Kolbenzylindereinheiten 13 die Führungsgestänge geschwenkt, so dass die Spreiz- und Ausrichtbacken 5, 6 auseinander fahren, d.h., der Abstand wird vergrößert, gleichzeitig werden die Spreiz- und Ausrichtbacken in diesem Schritt um die Gelenkpunkte 16, 17 des Führungsgestänges 9, 10, 11, 12 gekippt.After removing the filled gusseted bag 1 from the filler neck, the guide rods are pivoted by appropriate controls of the piston-cylinder units 13, so that the spreading and alignment jaws 5, 6 move apart, ie, the distance is increased, at the same time the spreading and alignment jaws in this step about the hinge points 16, 17 of the guide rod 9, 10, 11, 12 tilted.

Die Spreiz- und Ausrichtbacken 5, 6 beschreiben damit jeweils bogenförmige Bahnen, welche schematisch durch die Pfeile P 1 und P2 angedeutet sind. Die (gedachten) Schwenkachsen dieser Bahnen liegen vertikal unterhalb der bogenförmigen Bahnen selbst bzw. tiefer als diese.The spreading and alignment jaws 5, 6 thus describe each arcuate paths, which are indicated schematically by the arrows P 1 and P2. The (imaginary) pivot axes of these tracks are vertically below the arcuate tracks themselves or lower than this.

Dazu liegen hier vorteilhaft sämtliche Gelenkpunkte 16, 17 des Führungsgestänges vertikal tiefer als die Spreiz- und Ausrichtbacken 5, 6, welche in der Backenaufnahme 14 gehalten sind. Die Vertikale ist in der Fig. 3 durch die angedeutete Mittellinie des Sackes 1 definiert.For this purpose, all hinge points 16, 17 of the guide linkage advantageously lie vertically lower than the spreading and aligning jaws 5, 6, which are held in the jaw receptacle 14. The vertical is in the Fig. 3 defined by the indicated center line of the bag 1.

Insbesondere liegen die unteren Gelenkpunkte 16, 17 des Führungsgestänges - und damit die unteren Schwenkachsen der Schwenkbewegung - in vertikaler Richtung derart tiefer als die Spreiz- und Ausrichtbacken 5, 6, dass zumindest die Bereiche B 1 und B2, in welchem die Spreiz- und Ausrichtbacken 5, 6 den Sack 1 greifen, auf den bogenförmigen Bahnen nach außen und gleichzeitig nach oben geschwenkt werden. Dadurch werden jedenfalls die gegriffenen Sackecken S und S2 analog bewegt, d.h. auf der jeweiligen bogenförmigen Bahn auseinander und nach oben gezogen.In particular, the lower hinge points 16, 17 of the guide linkage - and thus the lower pivot axes of the pivoting movement - in the vertical direction as deep as the spreading and alignment jaws 5, 6, that at least the areas B 1 and B2, in which the spreading and alignment jaws 5, 6 grab the bag 1, be pivoted on the arcuate tracks to the outside and at the same time upwards. As a result, in any case, the gripped sacks S and S2 are moved in the same way, i. pulled apart and upwards on the respective arcuate path.

Durch ein optimales Verstellen der Abstände der im Betrieb ortsfesten oder beweglichen Anlenkpunkte bzw. Gelenkpunkte (ortsfeste Gelenkpunkte 16, bewegliche Gelenkpunkte 17) kann die Schrägstellung der Führungshebel zueinander eingestellt werden.By an optimal adjustment of the distances of the fixed or movable in operation articulation points or articulation points (fixed hinge points 16, movable pivot points 17), the inclination of the guide levers can be adjusted to each other.

Damit kann die jeweils bogenförmige Bahn der Spreiz- und Ausrichtbacken 5, 6 der konischen Form des Sackes am Füllstutzen angepasst werden.Thus, the respective arcuate path of the spreading and alignment jaws 5, 6 of the conical shape of the bag can be adapted to the filler neck.

Es ergibt sich durch einen Vergleich der Figur 3 mit der Figur 4, dass beim Überführen der Spreiz- und Ausrichtbacken 5, 6 in die gespreizte Stellung der dazwischenliegende Bereich durch die bogenförmige Bewegung gespannt und ausgerichtet wird, wodurch eine Faltenbildung wirksam vermieden wird.It results from a comparison of FIG. 3 with the FIG. 4 in that when transferring the spreading and aligning jaws 5, 6 into the spread position, the intermediate region is stretched and aligned by the arcuate movement, whereby wrinkling is effectively avoided.

Im Bereich der Führungsgestänge ist die Füllmaschine mit ortsfesten Anschlägen 15 ausgestattet, die an Schraubenbolzen festgelegt sind, so dass sie verstellbar sind.In the field of guide rods, the filling machine is equipped with fixed stops 15, which are fixed to bolts, so that they are adjustable.

Die Erfindung ist nicht auf das dargestellte Ausführungsbeispiel beschränkt.The invention is not limited to the illustrated embodiment.

Besonders vorteilhaft ist, dass dem Füllstutzen auf einer bogenförmigen Bahn verfahrbare Spreiz- und Ausrichtbacken 5, 6 zugeordnet sind, die nach dem Abnehmen des gefüllten Sackes vom Füllstutzen unter Vergrößerung ihres Abstandes nach außen bewegt werden, so dass der Bereich in dem die Schweißnaht 2 gelegt werden soll, gespannt wird, so dass keine zu einer Undichtigkeit führenden Falten entstehen.It is particularly advantageous that the filler neck on an arcuate path movable spreading and alignment jaws 5, 6 are assigned, which are moved after removing the filled bag from the filler under enlargement of their distance to the outside, so that the area in which the weld 2 is to be tensioned, so that no leading to a leak wrinkles.

Claims (13)

  1. A filling machine for filling open, weldable side-gusset bags (1) which are provided in the corner regions with corner weld seams (3, 4), with a filler neck and preferably with a welding means succeeding the filler neck for applying weld seams (2), the filling machine being equipped with spreading and orientation jaws (5, 6) which grasp the side-gusset bags (1) in the side-gusset regions and are arranged in pairs, which jaws are arranged in particular on guide rods (9, 10, 11, 12) such that they can be moved along arcuate paths, so that the regions (B1, B2) of the spreading and orientation jaws (5, 6) in which the spreading and orientation jaws (5, 6) grasp the bag (1) are pivoted outwards and simultaneously upwards on the arcuate paths, the pivot axes of these paths lying vertically beneath the arcuate paths, characterised in that
    a. the spreading and orientation jaws (5, 6) in the brought-together position are inclined relative to the vertical,
    b. the ends of the spreading and orientation jaws which face each other, in the closed position, are located lower than the ends arranged on the jaw receptacles (14), and
    c. the spreading and orientation jaws (5, 6) in the position in which they are moved away from each other are horizontal.
  2. A filling machine according to Claim 1, characterised in that at least articulation points (16) of the guide rod which are lower in the vertical direction are located lower in the vertical direction than the spreading and orientation jaws (5, 6).
  3. A filling machine according to Claim 2, characterised in that all the articulation points (16) of the guide rod are located lower in the vertical direction than the spreading and orientation jaws (5, 6).
  4. A filling machine according to one of the preceding claims, characterised in that the spreading and orientation jaws (5, 6) of each side are mounted between two guide rods.
  5. A filling machine according to Claim 4, characterised in that the guide rods (9, 10, 11, 12) on each side can be actuated by means of an individual drive (13) in each case, and in that the drives (13) of the two sides are synchronised.
  6. A filling machine according to one or more of the preceding claims, characterised in that each guide rod is formed as a multiple-articulation chain, and in that the ends of the guide levers (9, 10, 11, 12) of the multiple-articulation chain which are remote from the spreading and orientation jaws (5, 6) are pivotable about fixed axes.
  7. A filling machine according to Claim 6, characterised in that the ends of the guide levers (9, 10, 11, 12) of the multiple-articulation chain which face the spreading and orientation jaws (5, 6) are articulated to a jaw receptacle (14).
  8. A filling machine according to one or more of the preceding Claims 6 or 7, characterised in that pins (7, 8) are inserted into the jaw receptacle (14) forming the coupler of the multiple-articulation chain, on which pins the spreading and orientation jaws (5, 6) are mounted.
  9. A filling machine according to one or more of the preceding Claims 6 to 8, characterised in that each multiple-articulation chain is formed as a parallelogram-like multiple-articulation chain, and in that the guide levers (9, 10, 11, 12) are in inclined positions relative to each other.
  10. A filling machine according to one or more of the preceding Claims 7 to 9, characterised in that the distances between the coupler-side articulation points of the guide levers (9, 10, 11, 12) are greater than the distances between the fixed axes.
  11. A filling machine according to one or more of the preceding Claims 7 to 10, characterised in that the distances between the articulation points of the guide levers (9, 10, 11, 12) forming the multiple-articulation chain on the side facing and/or remote from the gripper receptacle (14) are adjustable.
  12. A filling machine according to one or more of the preceding Claims 7 to 11, characterised in that the distances between the articulation points (16, 17) which are stationary or movable in operation are adjustable in order to adjust the inclined position of the guide levers relative to each other for adaptation of the arcuate path of the spreading and orientation jaws to the conical shape of the bag on the filler neck.
  13. A method for spreading a side-gusset bag with a filling machine according to one of the preceding claims, characterised in that the grasped bag corners (S1 and S2) are pulled apart and upwards on the arcuate path, the pivot axes of these paths lying vertically beneath the arcuate paths.
EP07107625A 2006-05-11 2007-05-07 Filling machine for filling open, sealable bags with lateral folds Active EP1857369B1 (en)

Applications Claiming Priority (1)

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DE102006022298 2006-05-11

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EP1857369A3 EP1857369A3 (en) 2008-03-05
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AT (1) ATE542747T1 (en)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021228837A1 (en) * 2020-05-13 2021-11-18 Haver & Boecker Ohg Movement device and movement method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010049369A1 (en) * 2010-10-26 2012-04-26 Haver & Boecker Ohg Sack and method for filling a bag
CN109278359B (en) * 2018-11-14 2023-11-21 温州临界科技有限公司 Bag body feeding device for handbag rope threading machine

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Publication number Priority date Publication date Assignee Title
DK172472B1 (en) * 1994-07-05 1998-09-07 Bates Ventil Saekke Co As Method and apparatus for moving a valve bag from a filling position to a closing position and filling spout therefor
US5452559A (en) * 1994-08-08 1995-09-26 Lipes; Arnold Bagging machine with side bag gripping and transfer mechanism
US6742321B2 (en) * 2002-09-30 2004-06-01 Gates Automation, Inc. Flange alignment and grasping assembly for bag handling apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021228837A1 (en) * 2020-05-13 2021-11-18 Haver & Boecker Ohg Movement device and movement method

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ATE542747T1 (en) 2012-02-15
EP1857369A2 (en) 2007-11-21
EP1857369A3 (en) 2008-03-05
ES2381502T3 (en) 2012-05-28

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