EP0390190A1 - Bag filling and sealing machine - Google Patents

Bag filling and sealing machine Download PDF

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Publication number
EP0390190A1
EP0390190A1 EP90106157A EP90106157A EP0390190A1 EP 0390190 A1 EP0390190 A1 EP 0390190A1 EP 90106157 A EP90106157 A EP 90106157A EP 90106157 A EP90106157 A EP 90106157A EP 0390190 A1 EP0390190 A1 EP 0390190A1
Authority
EP
European Patent Office
Prior art keywords
bags
supply
filling
station
bag
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
EP90106157A
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German (de)
French (fr)
Other versions
EP0390190B1 (en
Inventor
Hans-H. Meyer
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Cessione meyer Jens
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Meyer Hans-H
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Filing date
Publication date
Application filed by Meyer Hans-H filed Critical Meyer Hans-H
Priority to AT90106157T priority Critical patent/ATE83451T1/en
Publication of EP0390190A1 publication Critical patent/EP0390190A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • B65B43/123Feeding flat bags connected to form a series or chain
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B39/00Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/007Guides or funnels for introducing articles into containers or wrappers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/28Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by grippers co-operating with fixed supports
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/34Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B59/00Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/003Arrangements to enable adjustments related to the packaging material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B2210/00Specific aspects of the packaging machine
    • B65B2210/02Plurality of alternative input or output lines or plurality of alternative packaging units on the same packaging line for improving machine flexibility

Definitions

  • the invention relates to a bag filling and closing device in which the filling material is inserted into a prefabricated bag in a filling station, with a spreading and holding device for the bags for preparing the bags for the filling process, which the bags are in a position next to the filling station picks up, spreads and transferred to the filling station.
  • a bag filling and closing device which comprises a rotatable disc lying in a vertical plane. There are perforations distributed around the circumference on the disk. Tubular holding devices are provided around the openings, which protrude horizontally from a surface of the disk. A section of a tubular packaging material is pushed onto the tubular holding devices from a roll. The section is cut off at one end and sealed. The disc rotates in the manner of a revolver, and in a subsequent station the goods to be packaged are inserted through the corresponding opening into the interior of the tubular holding device.
  • bag filling devices are known in which a single bag stack is kept ready in the filling station and the upper bag is inflated or opened by a vacuum suction device.
  • a filling mouth designed as a spreading device dips into the opened container, and then the filling material, for example a container of toilet paper, is pushed into the bag.
  • These devices are susceptible to faults, since numerous movement elements are accommodated in a very small space in the area of the filling station and interfere with one another in their movement sequence and can therefore often only be moved one after the other. This leads to delays. For the rest, the contents must lie on a ramp in the top the bag of the bag stack are inserted. This results in numerous accidents (ski jump effect).
  • Another disadvantage is that in practice the number of bags to be accommodated in the filling position is limited to approximately 200 bags. This requires frequent reloading of a stack of bags and therefore frequent business interruptions.
  • Another known device has an integrated bag manufacturing and packaging system, in which the individual bags are brought into the filling station immediately after completion with the aid of a suction belt conveyor and then opened by blowing in air or suction. This method is also prone to failure. The bags cannot always be opened reliably due to electrostatic or material-related adhesive forces. Feeding in accordance with the report is not always guaranteed.
  • the invention has for its object to design a device of the generic type so that it is less prone to failure and allows the filling of bags with high capacity and high efficiency.
  • a spreading and holding device is attached to a carriage which can move back and forth between the filling station and a storage and / or supply station for bags lying next to it.
  • the bag supply can thus be kept ready outside the filling station, it can comprise a substantially larger number of bags than when it is accommodated directly in the filling station. Sufficient space is available for the process of opening and spreading, so that a reliable mode of operation can be achieved. The so-called ski jump effect does not apply because only the bag to be filled immediately reaches the filling station.
  • bags that are fed from a roll and individually separated can also be picked up and be spread. This can also be done in such a way that the bag filling device is immediately connected upstream of a production and packaging system for bags.
  • a particularly advantageous embodiment of the invention is that storage and / or supply stations for bags are provided on two opposite sides next to the filling station and that the slide carries two spreading and holding devices lying next to one another, which alternate in one in the end positions of the slide movement the supply and / or supply stations and the filling station.
  • one prey can be filled in each case while a bag is being opened and spread at the same time in one of the supply and supply stations. This way of working enables a considerable acceleration of the workflow despite increased reliability.
  • the stack of bags can be placed in the storage and supply stations on a base which can be raised and adjusted in the vertical direction, so that the upper bag is always at the same height.
  • the bags are preferably held on two parallel, generally vertical bars which engage in two holes on the edge of the bags.
  • the bars are bent at the top ends in a flat curve towards the bags. This makes it easier to pull off the respective upper bag, and the bags located in the upper area still move slightly against one another in the stack, so that the sticking together is restricted due to electrostatic or other material-related properties.
  • Hold-down devices lie against the upper end of the rods, which cooperate with the ends of the rods in a ball and ball socket configuration and are preferably resiliently biased against the rods. This results in a reliable separation of the bags.
  • the contents are preferably brought in individual containers on an accumulation conveyor in front of the filling station and pressed into the bags with a slide.
  • pouch used in the present context refers to all kinds of pouch-shaped containers, including sacks, bags made of paper or foils and the like.
  • the device comprises a filling station 10, to which supply and / or supply stations 12, 14 are assigned on two opposite sides.
  • An endless accumulation conveyor 16 moves in front of the filling station 10 and here has a holding position 18, from which the filling material 22 can be inserted into a bag 24 provided by means of a slide 20.
  • the example shown is a bag which is open on the bottom and has a handle 26 which is open on the bottom, that is to say relative to the handle 26, during the filling process.
  • the device can of course also be used for other bag, sack or bag shapes.
  • the bag 24 is held open by two lateral, swiveling expanding jaws 28, 30. After the bag has been filled, it is advanced into a station 32 (FIG. 1), which is only indicated here, in which the bag is closed and sealed and then transported away.
  • the spreading jaws 28, 30 are preceded by two lateral guides 34, 36, which guide the filling material 22 laterally during the movement from the accumulation conveyor 16 to the spreading jaws 28, 30 and into the bag 24.
  • the guides 36, 38 run parallel and open directly into the spreading jaws 28, 30.
  • the guides 34, 36 and the expanding jaws 28, 30 are mounted on a carriage 38 which can be pushed back and forth parallel to the accumulation conveyor 16.
  • a guide rod 40 and a pneumatic cylinder 42 are provided.
  • the carriage 38 also carries further guides 34, 36 and expanding jaws 28, 30 in a position lying in front of the left supply and / or feed station 12 according to FIGS. 1 and 2.
  • the expanding jaws 28, 30 are mounted on vertical swivel axes 44, 46, which are guided in slots 48 of the slide 38 which diverge obliquely in the retraction direction.
  • a drive mechanism not shown, is provided for advancing and retracting the expanding jaws. This movement is necessary so that the expanding jaws 28, 30 can be advanced from the position shown on the left in FIGS. 1 and 2 into a bag that is kept ready.
  • the sliding movement of the slide 38 and the positions of the two pairs of guide and spreading jaws on the slide are selected such that they alternate in front of the left supply and / or feed station 12 and the filling station or in front of the filling station and the right supply and feed station 14 stand.
  • One bag 24 can thus be filled at the same time, while another bag is picked up in one of the two supply and supply stations 12, 14.
  • suction cups 50, 52 and 54, 56 in the two supply and / or supply stations 12, 14, which lift the upper bag wall and allow the expansion jaws to enter.
  • Other devices for opening the bags such as air nozzles, can also be provided.
  • a linear conveyor 58 can also be provided, which moves the bags into the holding position 18.
  • the loading positions of the two conveyors 16, 58 are designated with 60 and 62.
  • the filling process can be significantly accelerated. It is not necessary to accommodate the entire mechanics in the smallest space within the filling station 10. The filling material can always be pushed straight into the bag without moving over a ramp. The bag supply to be made available is considerably larger than if the bag stack were immediately accommodated in the filling station.
  • Figures 3 to 5 illustrate the provision of the bags in the supply and / or supply stations.
  • the bags 24 have two holes 74, 76 lying side by side on the bottom edge. These enable a stack of bags to be pushed onto two parallel rods 78, 80, which are vertical and curved in the upper end region in the direction of the bags.
  • the rods 78, 80 are connected below the stack of bags by a connecting piece 82 and, moreover, are angled at right angles in the direction of the bags.
  • the non-designated, angled ends can be inserted into guide grooves 84, 86 on an edge of an overall plate-shaped carriage 88, which has non-designated rollers for insertion into the stations 12, 14.
  • a hook 90 is used to fix the connector 82 and thus the rods 78, 80 on the carriage.
  • a rectangular, plate-shaped support 92 is supported, which forms the actual support surface for the stack of bags.
  • Support and guide pins 94, 96 determine the minimum distance between the carriage 88 and the support 92.
  • Two blind slots 98, 100 entering an edge of the support enable the passage of the rods 78, 80.
  • the carriage 88 has a dovetail guide 102 on the underside, which runs into a corresponding dovetail guide 104 in the stations 12, 14, which is fixedly attached to the floor. This will fix the car.
  • the base 92 runs in the stations 12, 14 shown in FIG. 4 with the pins 106, 108 projecting downward onto the top of lifting members 110, 112, which can be raised and lowered with the aid of vertical spindles 114, 116 and guides 118, 120. In this way, the pad 92 can be lifted off the cart and always keep the top surface of the stack of bags at a constant level.
  • FIG. 5 shows a partial section of one of the rods 78, the support 92 and the slot 98 in the support 92, which receives the rod 78.
  • a stack of bags, not designated, is indicated on the base 92.
  • the rod 78 curves in the upper area to the right in FIG. 5, so that the bags can be moved against one another, as can be seen directly in FIG.
  • the upper end of the rod 78 forms a ball socket into which a spherical extension 122 engages on the underside of a rod-shaped hold-down 124.
  • the hold-down device is pivotably mounted in a horizontal axis 126 and enables the attachment of the attachment 122 against the ball socket to be fixed.
  • the hold-down device 124 with the attachment 122 and the ball socket of the rod 78 act as a separating device and prevent an uncontrolled escape of several bags that stick together.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Basic Packing Technique (AREA)

Abstract

A bag filling and closing apparatus includes a filling station (10) in which the material to be filled in (22) is pushed into a prefabricated bag (24). A device (50, 52, 54, 56) is provided for pulling the bags onto the filling machine as is a device for spreading open and holding the bags. Next to the filling station (10), there is disposed at least one supply and/or intake station (12, 14) for bags, each station being equipped with a device (50, 52, 54, 56) for pulling the bags onto the apparatus. A carriage (30) is movable back and forth between the filling station (10) and the supply and intake station (12, 14) carries the spreading and holding device (28, 30, 44, 46) for the bags. The bags can therefore be picked up and spread open in the supply and intake station (12, 14) and can be transferred to the filling station (10) in that position. Preferably, two supply and intake stations are provided on opposite sides of the filling station (10 ).

Description

Die Erfindung betrifft eine Beutelbefüll- und Schließvorrichtung, bei der das Füllgut in einer Füllstation in einen vorgefertigten Beutel eingeschoben wird, mit einer Aufspreiz- und Halteeinrichtung für die Beutel zur Vorbereitung der Beutel auf den Füllvorgang, die die Beutel in einer neben der Füllstation liegen­den Position aufgreift, aufspreizt und in die Füllstation überführt.The invention relates to a bag filling and closing device in which the filling material is inserted into a prefabricated bag in a filling station, with a spreading and holding device for the bags for preparing the bags for the filling process, which the bags are in a position next to the filling station picks up, spreads and transferred to the filling station.

Aus der US-PS 4 495 751 ist eine Beutelbefüll- und Schließvorrichtung be­kannt, die eine drehbare, in einer senkrechten Ebene liegende Scheibe umfaßt. Auf der Scheibe befinden sich im Umfang verteilte Durchbrüche. Um die Durch­brüche herum sind rohrförmige Haltevorrichtungen vorgesehen, die von einer Oberfläche der Scheibe waagerecht vorspringen. Auf die rohrförmigen Halte­vorrichtungen wird von einer Rolle jeweils ein Abschnitt eines schlauchförmi­gen Verpackungsmaterials aufgeschoben. Der Abschnitt wird an einem Ende ab­getrennt und verschlossen. Die Scheibe dreht sich nach Art eines Revolvers, und in einer nachfolgenden Station wird die zu verpackende Ware durch den ent­sprechenden Durchbruch hindurch in das Innere der rohrförmigen Haltevorrich­tung eingeschoben.From US Pat. No. 4,495,751 a bag filling and closing device is known which comprises a rotatable disc lying in a vertical plane. There are perforations distributed around the circumference on the disk. Tubular holding devices are provided around the openings, which protrude horizontally from a surface of the disk. A section of a tubular packaging material is pushed onto the tubular holding devices from a roll. The section is cut off at one end and sealed. The disc rotates in the manner of a revolver, and in a subsequent station the goods to be packaged are inserted through the corresponding opening into the interior of the tubular holding device.

Aufgrund der Verwendung einer senkrecht angeordneten, um eine waagerechte Achse drehbaren Scheibe ist diese bekannte Vorrichtung nur für relativ kleine Packungen anwendbar. Auch hier bestehen Bedenken gegenüber der reibungslo­sen Funktionsfähigkeit, da zahlreiche bewegliche Teile auf engem Raum ange­bracht werden müssen.Due to the use of a vertically arranged disc which can be rotated about a horizontal axis, this known device can only be used for relatively small packs. Again, there are concerns about the smooth functioning, since numerous moving parts have to be installed in a small space.

Weiterhin sind Beutelbefüllvorrichtungen bekannt, bei denen ein Einzelbeutel­stapel in der Füllstation bereitgehalten und jeweils der obere Beutel aufgebla­sen oder durch Vakuumsauger geöffnet wird. In einer zweiten Bewegung taucht ein als Aufspreizeinrichtung ausgebildeter Füllmund in den geöffneten Behäl­ter ein, und anschließend wird das Füllgut, etwa ein Gebinde Toilettenpapier, in den Beutel eingeschoben. Diese Vorrichtungen sind störanfällig, da im Be­reich der Füllstation zahlreiche Bewegungselemente auf engstem Raum unter­gebracht sind und sich in ihrem Bewegungsablauf gegenseitig behindern und somit vielfach nur nacheinander bewegt werden können. Dies führt zu Verzöge­rungen. Im übrigen muß das Füllgut über eine Rampe in den jeweils oben liege­ den Beutel des Beutelstapels eingeschoben werden. Dadurch ergeben sich zahl­reiche Störfälle (Sprungschanzeneffekt). Ein weiterer Nachteil besteht darin, daß in der Praxis die Anzahl der in der Füllposition unterzubringenden Beutel auf ca. 200 Beutel beschränkt ist. Dies erfordert ein häufiges Nachlegen eines Beutelstapels und damit häufige Betriebsunterbrechungen.Furthermore, bag filling devices are known in which a single bag stack is kept ready in the filling station and the upper bag is inflated or opened by a vacuum suction device. In a second movement, a filling mouth designed as a spreading device dips into the opened container, and then the filling material, for example a container of toilet paper, is pushed into the bag. These devices are susceptible to faults, since numerous movement elements are accommodated in a very small space in the area of the filling station and interfere with one another in their movement sequence and can therefore often only be moved one after the other. This leads to delays. For the rest, the contents must lie on a ramp in the top the bag of the bag stack are inserted. This results in numerous accidents (ski jump effect). Another disadvantage is that in practice the number of bags to be accommodated in the filling position is limited to approximately 200 bags. This requires frequent reloading of a stack of bags and therefore frequent business interruptions.

Eine andere bekannte Vorrichtung weist eine integrierte Beutelherstellungs- und -konfektionieranlage auf, bei der die einzelnen Beutel unmittelbar nach der Fertigstellung mit Hilfe eines Saugbandförderers in die Füllstation gebracht und sodann durch Einblasen von Luft oder Ansaugen geöffnet werden. Auch die­ses Verfahren ist störanfällig. Die Beutel lassen sich aufgrund elektrostati­scher oder materialbedingter Adhäsionskräfte nicht immer zuverlässig öff­nen. Die rapportgerechte Zuführung ist nicht immer gewährleistet.Another known device has an integrated bag manufacturing and packaging system, in which the individual bags are brought into the filling station immediately after completion with the aid of a suction belt conveyor and then opened by blowing in air or suction. This method is also prone to failure. The bags cannot always be opened reliably due to electrostatic or material-related adhesive forces. Feeding in accordance with the report is not always guaranteed.

Daneben sind noch einige Spezialkonstruktionen bekannt, die sich jedoch bis­her nicht als zuverlässige und störungsfreie Lösung für Befüllvorgänge aller Art erwiesen haben.In addition, some special constructions are known, but so far they have not proven to be a reliable and trouble-free solution for all types of filling processes.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der gattungsgemä­ßen Art so zu gestalten, daß sie wenig störanfällig ist und das Füllen von Beu­teln mit hoher Kapazität und und hohem Wirkungsgrad ermöglicht.The invention has for its object to design a device of the generic type so that it is less prone to failure and allows the filling of bags with high capacity and high efficiency.

Diese Aufgabe wird erfindungsgemäß bei einer Vorrichtung der eingangs ge­nannten Art dadurch gelöst, daß eine Aufspreiz- und Halteeinrichtung auf ei­nem zwischen der Füllstation und einer neben dieser liegenden Vorrats- und/oder Zufuhrstation für Beutel hin- und hergehend beweglichen Schlitten angebracht ist.This object is achieved according to the invention in a device of the type mentioned at the outset in that a spreading and holding device is attached to a carriage which can move back and forth between the filling station and a storage and / or supply station for bags lying next to it.

Da somit der Beutelvorrat außerhalb der Füllstation bereitgehalten werden kann, kann er eine wesentlich größere Anzahl von Beuteln umfassen als bei der Unterbringung unmittelbar in der Füllstation. Für den Vorgang des Aufziehens und Aufspreizens steht ausreichend Raum zur Verfügung, so daß sich eine zu­verlässige Arbeitsweise erreichen läßt. Der sogenannte Sprungschanzenef­fekt entfällt, da jeweils nur der unmittelbar zu füllende Beutel in die Füllsta­tion gelangt.Since the bag supply can thus be kept ready outside the filling station, it can comprise a substantially larger number of bags than when it is accommodated directly in the filling station. Sufficient space is available for the process of opening and spreading, so that a reliable mode of operation can be achieved. The so-called ski jump effect does not apply because only the bag to be filled immediately reaches the filling station.

In der außerhalb der Füllstation liegenden Vorrats- und Zufuhrstation können auch von einer Rolle zugeführte und einzeln abgetrennte Beutel aufgegriffen und gespreizt werden. Dies kann auch in der Form geschehen, daß der Beutelbe­füllvorrichtung unmittelbar eine Herstellungs- und Konfektionieranlage für Beutel vorgeschaltet wird.In the storage and feed station located outside the filling station, bags that are fed from a roll and individually separated can also be picked up and be spread. This can also be done in such a way that the bag filling device is immediately connected upstream of a production and packaging system for bags.

Eine besonders vorteilhafte Ausführung der Erfindung besteht darin, daß auf zwei gegenüberliegenden Seiten neben der Füllstation Vorrats- und/oder Zu­fuhrstationen für Beutel vorgesehen sind und daß der Schlitten zwei nebenein­ander liegende Aufspreiz- und Halteeinrichtungen trägt, die sich in den End­stellungen der Schlittenbewegung abwechselnd in einer der Vorrats- und/oder Zufuhrstationen und der Füllstation befinden. Bei dieser Ausführungsform kann jeweils ein Beute befüllt werden, während gleichzeitig in einer der Vorrats- und Zufuhrstationen ein Beutel aufgezogen und aufgespreizt wird. Diese Ar­beitsweise ermöglicht trotz erhöhter Zuverlässigkeit eine erhebliche Be­schleunigung des Arbeitsablaufs.A particularly advantageous embodiment of the invention is that storage and / or supply stations for bags are provided on two opposite sides next to the filling station and that the slide carries two spreading and holding devices lying next to one another, which alternate in one in the end positions of the slide movement the supply and / or supply stations and the filling station. In this embodiment, one prey can be filled in each case while a bag is being opened and spread at the same time in one of the supply and supply stations. This way of working enables a considerable acceleration of the workflow despite increased reliability.

Die Beutelstapel können in den Vorrats- und Zufuhrstationen auf einer Unterla­ge abgelegt werden, die in senkrechter Richtung anhebbar und nachsteuerbar ist, so daß der obere Beutel stets in der selben Höhe liegt. Die Beutel werden vorzugsweise auf zwei parallelen, insgesamt senkrechten Stangen gehalten, die in zwei Löcher am Rand der Beutel eingreifen. Die Stangen sind an den oberen Enden in einer flachen Kurve in Richtung der Beutel abgebogen. Dadurch wird das Abziehen des jeweils oberen Beutels erleichtert, und die im oberen Bereich liegenden Beutel verschieben sich noch im Stapel leicht gegeneinander, so daß das Zusammenhaften aufgrund elektrostatischer oder anderer materialbe­dingter Eigenschaften eingeschränkt wird. Gegen das obere Ende der Stangen liegen Niederhalter an, die mit den Enden der Stangen in einer Kugel- und Kugel­pfannen-Konfiguration zusammenwirken und vorzugsweise federnd gegen die Stangen vorgespannt sind. Dadurch ergibt sich eine zuverlässige Vereinzelung der Beutel.The stack of bags can be placed in the storage and supply stations on a base which can be raised and adjusted in the vertical direction, so that the upper bag is always at the same height. The bags are preferably held on two parallel, generally vertical bars which engage in two holes on the edge of the bags. The bars are bent at the top ends in a flat curve towards the bags. This makes it easier to pull off the respective upper bag, and the bags located in the upper area still move slightly against one another in the stack, so that the sticking together is restricted due to electrostatic or other material-related properties. Hold-down devices lie against the upper end of the rods, which cooperate with the ends of the rods in a ball and ball socket configuration and are preferably resiliently biased against the rods. This results in a reliable separation of the bags.

Das Füllgut wird vorzugsweise in einzelnen Gebinden auf einem Stauförderer vor die Füllstation gebracht und mit einem Schieber in die Beutel hineinge­drückt.The contents are preferably brought in individual containers on an accumulation conveyor in front of the filling station and pressed into the bags with a slide.

Der im vorliegenden Zusammenhang verwendete Begriff der Beutel bezieht sich auf beutelförmige Behälter aller Art, also auch auf Säcke, Tüten aus Papier oder Folien und dergleichen.The term “pouch” used in the present context refers to all kinds of pouch-shaped containers, including sacks, bags made of paper or foils and the like.

Weitere Merkmale der Erfindung ergeben sich aus den Unteransprüchen.Further features of the invention emerge from the subclaims.

Im folgenden werden bevorzugte Ausführungsbeispiele der Erfindung anhand der beigefügten Zeichnung näher erläutert.

  • Fig. 1 ist eine schematische Draufsicht auf eine erfindungsgemäße Beutelbefüll- und Schließanlage;
  • Fig. 2 ist eine perspektivische Teildarstellung zu Fig. 1;
  • Fig. 3 veranschaulicht die Aufnahme der Beutel in der Vorrats- und Zufuhrposition in einer perspektivischen Darstellung;
  • Fig. 4 zeigt in einer Frontansicht neben den Elementen der Fig. 3 ei­ne Hubeinrichtung;
  • Fig. 5 ist ein Teilschnitt durch einen Beutelstapel in der Vorrats- und Zufuhrstation;
Preferred exemplary embodiments of the invention are explained in more detail below with reference to the attached drawing.
  • Fig. 1 is a schematic plan view of a bag filling and closing system according to the invention;
  • Fig. 2 is a partial perspective view of Fig. 1;
  • Fig. 3 illustrates the inclusion of the bags in the storage and supply position in a perspective view;
  • FIG. 4 shows a lifting device in a front view in addition to the elements of FIG. 3;
  • Figure 5 is a partial section through a stack of bags in the supply and delivery station;

Zur Erläuterung der Beutelbefüll- und Schließvorrichtung in ihrer Gesamtheit soll zunächst auf Figur 1 und 2 Bezug genommen werden. Die Vorrichtung um­faßt als zentralen Bestandteil eine Füllstation 10, der auf zwei gegenüberlie­genden Seiten Vorrats- und/oder Zufuhrstationen 12,14 zugeordnet sind. Ein endloser Stauförderer 16 bewegt sich vor der Füllstation 10 entlang und weist hier eine Halteposition 18 auf, von der aus das Füllgut 22 mit Hilfe eines Schie­bers 20 in einen bereitgehaltenen Beutel 24 eingeschoben werden kann. Wie insbesondere aus Figur 2 hervorgeht, handelt es sich im dargestellten Beispiel um einen bodenseitig offenen Beutel mit einem Handgriff 26, der während des Füllvorganges am Boden, also gegenüber dem Handgriff 26 offen ist. Die Vor­richtung ist selbstverständlich auch auf andere Beutel-, Sack- oder Tütenfor­men anwendbar. Während des Füllvorganges wird der Beutel 24 durch zwei seitliche, schwenkbare Spreizbacken 28,30 offengehalten. Nach dem Füllen des Beutels wird dieser in eine hier nur angedeutete Station 32 (Figur 1) vorge­rückt, in der der Beutel geschlossen und verschweißt sowie anschließend ab­transportiert wird.To explain the bag filling and closing device in its entirety, reference should first be made to FIGS. 1 and 2. As a central component, the device comprises a filling station 10, to which supply and / or supply stations 12, 14 are assigned on two opposite sides. An endless accumulation conveyor 16 moves in front of the filling station 10 and here has a holding position 18, from which the filling material 22 can be inserted into a bag 24 provided by means of a slide 20. As can be seen in particular from FIG. 2, the example shown is a bag which is open on the bottom and has a handle 26 which is open on the bottom, that is to say relative to the handle 26, during the filling process. The device can of course also be used for other bag, sack or bag shapes. During the filling process, the bag 24 is held open by two lateral, swiveling expanding jaws 28, 30. After the bag has been filled, it is advanced into a station 32 (FIG. 1), which is only indicated here, in which the bag is closed and sealed and then transported away.

Den Spreizbacken 28,30 sind zwei seitliche Führungen 34,36 vorgelagert, die das Füllgut 22 bei der Bewegung von dem Stauförderer 16 bis zu den Spreiz­backen 28,30 und in den Beutel 24 hinein seitlich führen. Die Führungen 36,38 verlaufen parallel und münden unmittelbar in die gespreizten Spreizbacken 28,30 ein. Die Führungen 34,36 und die Spreizbacken 28,30 sind an einem Schlitten 38 gelagert, der parallel zu dem Stauförderer 16 hin- und herver­schiebbar ist. Zu diesem Zweck sind, wie Figur 2 andeutet, eine Führungsstange 40 und ein Pneumatikzylinder 42 vorgesehen. Der Schlitten 38 trägt zugleich in einer gemäß Figur 1 und 2 vor der linken Vorrats- und/oder Zufuhrstation 12 liegenden Position weitere Führungen 34,36 und Spreizbacken 28,30. Wie ein Vergleich der beiden Führungs- und Backenpaare zeigt, sind die Spreizbacken 28,30 auf senkrechten Schwenkachsen 44,46 gelagert, die in schräg in Rück­zugsrichtung auseinanderlaufenden Schlitzen 48 des Schlittens 38 geführt sind. Zum Vorrücken und Zurückziehen der Spreizbacken ist ein nicht gezeigter Antriebsmechanismus vorgesehen. Diese Bewegung ist erforderlich, damit die Spreizbacken 28,30 aus der links in Figur 1 und 2 gezeigten Position in einen bereitgehaltenen Beutel vorgeschoben werden können.The spreading jaws 28, 30 are preceded by two lateral guides 34, 36, which guide the filling material 22 laterally during the movement from the accumulation conveyor 16 to the spreading jaws 28, 30 and into the bag 24. The guides 36, 38 run parallel and open directly into the spreading jaws 28, 30. The guides 34, 36 and the expanding jaws 28, 30 are mounted on a carriage 38 which can be pushed back and forth parallel to the accumulation conveyor 16. For this purpose, as indicated in FIG. 2, a guide rod 40 and a pneumatic cylinder 42 are provided. The carriage 38 also carries further guides 34, 36 and expanding jaws 28, 30 in a position lying in front of the left supply and / or feed station 12 according to FIGS. 1 and 2. As a comparison of the two pairs of guides and jaws shows, the expanding jaws 28, 30 are mounted on vertical swivel axes 44, 46, which are guided in slots 48 of the slide 38 which diverge obliquely in the retraction direction. A drive mechanism, not shown, is provided for advancing and retracting the expanding jaws. This movement is necessary so that the expanding jaws 28, 30 can be advanced from the position shown on the left in FIGS. 1 and 2 into a bag that is kept ready.

Die Verschiebebewegung des Schlittens 38 und die Positionen der beiden Füh­rungs- und Spreizbackenpaare auf dem Schlitten sind so gewählt, daß sie je­weils abwechselnd vor der linken Vorrats- und/oder Zufuhrstation 12 und der Füllstation oder vor der Füllstation und der rechten Vorrats- und Zufuhrstation 14 stehen. Es kann also jeweils gleichzeitig ein Beutel 24 gefüllt werden, wäh­rend ein weiterer Beutel in einer der beiden Vorrats- und Zufuhrstationen 12,14 aufgegriffen wird.The sliding movement of the slide 38 and the positions of the two pairs of guide and spreading jaws on the slide are selected such that they alternate in front of the left supply and / or feed station 12 and the filling station or in front of the filling station and the right supply and feed station 14 stand. One bag 24 can thus be filled at the same time, while another bag is picked up in one of the two supply and supply stations 12, 14.

Zu diesem Zweck befinden sich in den beiden Vorrats- und/oder Zufuhrstatio­nen 12,14 absenkbare Saugnäpfe 50,52 bzw. 54,56, die die obere Beutelwand anheben und das Eintreten der Spreizbacken ermöglichen. Es können auch andere Einrichtungen zum Aufziehen der Beutel, etwa Luftdüsen, vorgesehen sein.For this purpose, there are lowerable suction cups 50, 52 and 54, 56 in the two supply and / or supply stations 12, 14, which lift the upper bag wall and allow the expansion jaws to enter. Other devices for opening the bags, such as air nozzles, can also be provided.

Wie Figur 1 zeigt, kann anstelle des Endlos-Stauförderers 16 auch ein Linear­förderer 58 vorgesehen sein, der die Beutel bis in die Halteposition 18 bewegt. Mit 60 und 62 sind die Beschickungspositionen der beiden Förderer 16,58 be­zeichnet.As shown in FIG. 1, instead of the endless accumulation conveyor 16, a linear conveyor 58 can also be provided, which moves the bags into the holding position 18. The loading positions of the two conveyors 16, 58 are designated with 60 and 62.

Wegen der Verwendung der von der Füllstation 10 unabhängigen Vorrats- und/oder Zufuhrstationen 12,14 besteht alternativ die Möglichkeit, Beutel für den Füllvorgang zu verwenden, die von einer Rolle als Endlosmaterial zugeführt und einzeln abgetrennt werden. In Figur 1 und 2 sind daher Vorratsrollen 64,66 gezeigt, von denen mit Hilfe von Schneidvorrichtungen 68,70 einzelne Beutel 72 abgeschnitten werden können. Die Beutel werden anschließend mit Hilfe nicht gezeigter Förderer, etwa eines Saugbandförderers, in die Stationen 12,14 bewegt, dort aufgezogen und aufgespreizt, wie es bereits beschrieben wurde.Because of the use of the supply and / or supply stations 12, 14 which are independent of the filling station 10, there is alternatively the possibility of using bags for the filling process, which are fed from a roll as continuous material and separated individually. 1 and 2 therefore show supply rolls 64, 66, from which individual bags 72 can be cut off with the aid of cutting devices 68, 70. The bags are then moved to stations 12, 14 with the aid of conveyors (not shown), for example a suction belt conveyor, where they are pulled open and spread, as has already been described.

Da der Vorgang des Aufziehens und Aufspreizens der Beutel dezentral außer­halb der Füllstation erfolgt und im übrigen zwei getrennte Vorrats- und/oder Zufuhrstationen existieren, kann der Füllvorgang wesentlich beschleunigt werden. Es ist nicht erforderlich, die gesamte Mechanik auf engstem Raum in­nerhalb der Füllstation 10 unterzubringen. Das Füllgut kann stets ohne Bewe­gung über eine Rampe geradlinig in die Beutel eingeschoben werden. Der bereit­zustellende Beutelvorrat ist wesentlich größer als bei einer unmittelbaren Unterbringung des Beutelstapels in der Füllstation.Since the process of opening and spreading the bags takes place decentrally outside the filling station and, moreover, there are two separate supply and / or supply stations, the filling process can be significantly accelerated. It is not necessary to accommodate the entire mechanics in the smallest space within the filling station 10. The filling material can always be pushed straight into the bag without moving over a ramp. The bag supply to be made available is considerably larger than if the bag stack were immediately accommodated in the filling station.

Figuren 3 bis 5 veranschaulichen die Bereitstellung der Beutel in den Vorrats- und/oder Zufuhrstationen. Wie bereits in Figur 1 und 2 andeutungweise zu er­kennen war, weisen die Beutel 24 am bodenseitigen Rand zwei nebeneinander liegende Löcher 74,76 auf. Diese ermöglichen, einen Beutelstapel auf zwei ins­gesamt senkrechte, im oberen Endbereich in Richtung der Beutel gekrümmte, parallele Stangen 78,80 aufzuschieben. Die Stangen 78,80 sind unterhalb des Beutelstapels durch ein Verbindungsstück 82 verbunden und im übrigen in Richtung der Beutel rechtwinklig abgewinkelt. Die nicht bezeichneten, abge­winkelten Enden können in Führungsnuten 84,86 an einem Rand eines ingesamt plattenförmig ausgebildeten Wagens 88 eingeschoben werden, der nicht be­zeichnete Rollen zum Einschieben in die Stationen 12,14 aufweist. Ein Haken 90 dient zum Festlegen des Verbindungsstücks 82 und damit der Stangen 78,80 auf dem Wagen.Figures 3 to 5 illustrate the provision of the bags in the supply and / or supply stations. As was already hinted at in FIGS. 1 and 2, the bags 24 have two holes 74, 76 lying side by side on the bottom edge. These enable a stack of bags to be pushed onto two parallel rods 78, 80, which are vertical and curved in the upper end region in the direction of the bags. The rods 78, 80 are connected below the stack of bags by a connecting piece 82 and, moreover, are angled at right angles in the direction of the bags. The non-designated, angled ends can be inserted into guide grooves 84, 86 on an edge of an overall plate-shaped carriage 88, which has non-designated rollers for insertion into the stations 12, 14. A hook 90 is used to fix the connector 82 and thus the rods 78, 80 on the carriage.

Oberhalb des Wagens stützt sich eine rechteckige, plattenförmige Unterlage 92 ab, die die eigentliche Auflagefläche für den Beutelstapel bildet. Stütz- und Führungszapfen 94,96 bestimmen den Mindestabstand zwischen dem Wagen 88 und der Unterlage 92. Zwei in in einen Rand der Unterlage eintretende Sack­schlitze 98,100 ermöglichen den Durchgang der Stangen 78,80.Above the carriage, a rectangular, plate-shaped support 92 is supported, which forms the actual support surface for the stack of bags. Support and guide pins 94, 96 determine the minimum distance between the carriage 88 and the support 92. Two blind slots 98, 100 entering an edge of the support enable the passage of the rods 78, 80.

Wie in Figur 3 angedeutet und auch in Figur 4 erkennbar ist, weist der Wagen 88 an der Unterseite eine Schwalbenschwanzführung 102 auf, die in den Stationen 12,14 in eine entsprechende Schwalbenschwanzführung 104, die ortsfest am Boden angebracht ist, einläuft. Dadurch wird der Wagen festgelegt. Die Unter­lage 92 läuft in den in Figur 4 gezeigten Stationen 12,14 mit nach unten ragen­den Zapfen 106,108 auf die Oberseite von Hubgliedern 110,112, die mit Hilfe von senkrechten Spindeln 114,116 und Führungen 118,120 angehoben und ab­gesenkt werden können. Auf diese Weise kann die Unterlage 92 vom Wagen ab­gehoben werden und die obere Oberfläche des Beutelstapels stets auf konstan­tem Niveau halten.As indicated in FIG. 3 and can also be seen in FIG. 4, the carriage 88 has a dovetail guide 102 on the underside, which runs into a corresponding dovetail guide 104 in the stations 12, 14, which is fixedly attached to the floor. This will fix the car. The base 92 runs in the stations 12, 14 shown in FIG. 4 with the pins 106, 108 projecting downward onto the top of lifting members 110, 112, which can be raised and lowered with the aid of vertical spindles 114, 116 and guides 118, 120. In this way, the pad 92 can be lifted off the cart and always keep the top surface of the stack of bags at a constant level.

Figur 5 zeigt in einem Teilschnitt eine der Stangen 78, die Unterlage 92 und den Schlitz 98 in der Unterlage 92, der die Stange 78 aufnimmt. Auf der Unterlage 92 ist ein nicht bezeichneter Beutelstapel angedeutet. Die Stange 78 krümmt sich im oberen Bereich nach rechts in Figur 5, so daß die Beutel gegeneinander, wie Figur 2 unmittelbar erkennen läßt, verschoben werden.FIG. 5 shows a partial section of one of the rods 78, the support 92 and the slot 98 in the support 92, which receives the rod 78. A stack of bags, not designated, is indicated on the base 92. The rod 78 curves in the upper area to the right in FIG. 5, so that the bags can be moved against one another, as can be seen directly in FIG.

Das obere Ende der Stange 78 bildet eine Kugelpfanne, in die ein kugelförmiger Ansatz 122 an der Unterseite eines stangenförmigen Niederhalters 124 ein­greift. Der Niederhalter ist in einer waagerechten Achse 126 schwenkbar gela­gert und ermöglicht die Einstellung einer festen Vorspannung des Ansatzes 122 gegen die Kugelpfanne. Der Niederhalter 124 mit den Ansatz 122 und die Kugelpfanne der Stange 78 wirken als Vereinzelungsvorrichtung und verhin­dern ein unkontrolliertes Austreten mehrerer zusammenhaftender Beutel.The upper end of the rod 78 forms a ball socket into which a spherical extension 122 engages on the underside of a rod-shaped hold-down 124. The hold-down device is pivotably mounted in a horizontal axis 126 and enables the attachment of the attachment 122 against the ball socket to be fixed. The hold-down device 124 with the attachment 122 and the ball socket of the rod 78 act as a separating device and prevent an uncontrolled escape of several bags that stick together.

Claims (7)

1. Beutelbefüll- und Schließvorrichtung, bei der das Füllgut in einer Füllsta­tion in einen vorgefertigten Beutel eingeschoben wird, mit einer Aufspreiz- und Halteeinrichtung für die Beutel zur Vorbereitung der Beute auf den Füll­vorgang, die die Beutel in einer neben der Füllstation liegenden Position auf­greift, aufspreizt und in die Füllstation überführt, dadurch gekennzeichnet, daß die Aufspreiz- und Halteeinrichtung (28,30,44,46) auf einem zwischen der Füllstation (10) und einer neben dieser liegenden Vorrats- und/oder Zufuhr­station (12,14) für Beutel hin- und hergehend beweglichen Schlitten (38) ange­bracht ist.1.bag filling and closing device, in which the filling material is inserted into a prefabricated bag in a filling station, with a spreading and holding device for the bags to prepare the prey for the filling process, which picks up the bags in a position lying next to the filling station, spreads out and transferred to the filling station, characterized in that the spreading and holding device (28, 30, 44, 46) on a between the filling station (10) and a supply and / or supply station (12, 14) lying next to it Bag reciprocating movable carriage (38) is attached. 2. Vorrichtung nach Anspruch 1, gekennzeichnet durch eine Einrichtung (50,52,54,56) zum Aufziehen der Beutel (24) in jeder der Vorrats- und/oder Zufuhrstationen (12,14).2. Device according to claim 1, characterized by a device (50,52,54,56) for opening the bags (24) in each of the supply and / or feed stations (12, 14). 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß auf zwei gegenüberliegenden Seiten neben der Füllstation Vorrats- und/oder Zu­fuhrstationen (12,14) für Beutel vorgesehen sind und daß der Schlitten (38) zwei nebeneinander liegende Aufspreiz- und Halteeinrichtungen (28,30,44,46) trägt, die sich in den Endstellungen der Schlittenbewegung abwechselnd in ei­ner der Vorrats- und/oder Zufuhrstationen (12,14) und der Füllstation (10) be­finden.3. Apparatus according to claim 1 or 2, characterized in that storage and / or supply stations (12, 14) for bags are provided on two opposite sides next to the filling station and that the carriage (38) has two spreading and holding devices located next to one another ( 28, 30, 44, 46) which, in the end positions of the slide movement, are alternately located in one of the supply and / or feed stations (12, 14) and the filling station (10). 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß in der Vorrats- und/oder Zufuhrstation (12,14) ein Stapel an einem Rand vorgelochter Einzelbeutel (24) auf zwei parallelen, senkrechten, im oberen Be­reich in einer flachen Kurve in Richtung der Beute gekrümmten Stangen (78,80) gehalten ist, und daß gegen die Enden der Stangen Niederhalter (122,124) elastisch anliegen, die mit den Stangen unter Bildung von korrespon­dierenden Kugel- und Kugelpfannen-Flächen zusammenwirken.4. Device according to one of claims 1 to 3, characterized in that in the storage and / or feed station (12, 14) a stack of perforated individual bags (24) on one edge on two parallel, vertical, in the upper area in a flat Curve in the direction of the prey curved rods (78,80) is held, and that against the ends of the rods hold down (122,124) resiliently, which cooperate with the rods to form corresponding ball and ball socket surfaces. 5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Beutelstapel in den Vorrats- und/oder Zufuhrstationen (12,14) auf ei­ner anhebbaren und nachsteuerbaren Unterlage (92) liegt.5. Device according to one of claims 1 to 4, characterized in that the stack of bags in the supply and / or feed stations (12, 14) lies on a raised and readjustable base (92). 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Unterlage (92) senkrecht anhebbar in bezug auf einen Wagen auf diesem angeordnet ist, daß die Stangen (78,80) lösbar mit dem Wagen (88) zu verbinden sind, und daß die Unterlage (92) Schlitze (98,100) zur Aufnahme der Stangen (78,80) auf­weist.6. The device according to claim 5, characterized in that the base (92) is arranged vertically raised with respect to a carriage on this, that the rods (78, 80) are releasably connected to the carriage (88), and that Base (92) has slots (98, 100) for receiving the rods (78, 80). 7. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß den Vorrats- und/oder Zufuhrstationen (12,14) Rollengestelle zur Aufnah­me von Rollen (64,66) mit vorgefertigtem Endlos-Beutelmaterial zugeordnet sind.7. Device according to one of claims 1 to 4, characterized in that the storage and / or feed stations (12, 14) are assigned roller racks for receiving rollers (64, 66) with prefabricated endless bag material.
EP90106157A 1989-03-30 1990-03-30 Bag filling and sealing machine Expired - Lifetime EP0390190B1 (en)

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DE3910208A DE3910208A1 (en) 1989-03-30 1989-03-30 BAG FILLING AND CLOSING DEVICE

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Also Published As

Publication number Publication date
DE3910208C2 (en) 1991-10-10
EP0390190B1 (en) 1992-12-16
US5024042A (en) 1991-06-18
DE59000585D1 (en) 1993-01-28
DE3910208A1 (en) 1990-10-04
ATE83451T1 (en) 1993-01-15

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