EP0726202B1 - Machine for making flat bags - Google Patents
Machine for making flat bags Download PDFInfo
- Publication number
- EP0726202B1 EP0726202B1 EP96101707A EP96101707A EP0726202B1 EP 0726202 B1 EP0726202 B1 EP 0726202B1 EP 96101707 A EP96101707 A EP 96101707A EP 96101707 A EP96101707 A EP 96101707A EP 0726202 B1 EP0726202 B1 EP 0726202B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bag
- flat
- bags
- operating station
- air stream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- 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
- B65B43/267—Opening of bags interconnected in a web
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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
- B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
- B65B43/34—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure
- B65B43/36—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure applied pneumatically
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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
- B65B43/46—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 Procedure for opening flat bags and a flat bag machine for performing the method, according to the preamble of claims 1 and 3.
- a flat bag machine has several successively arranged work stations. In these work stations bags are opened at the top by turning one from an endless roll of plastic web and pulled through subsequent longitudinal and transverse welding of this web manufactured, or pre-made bags by one Stack removed and then with, for example, food filled. Then the opening of the bag welded.
- the food stuffed in the bag can be in powdery, chunky or other consistency to be available.
- the web is materially equipped so that its, for example, by a longitudinal fold superimposed web areas by sealing or Welding can be closed together.
- Clocked flat-bag machines are known for which the individual steps in connection with the Manufacturing, opening and filling the individual bags one after the other cyclically. So is from WO-A-91 17924 a generic flat bag machine for filling successively fed flat bags and a generic one Process for opening such flat bags on a known such flat bag machine.
- To open the bag the respective bag will be at its opposite gripping members that hold the bag in have taken a first workstation during their Transport movement to a second work station on top of each other too moved. Air is targeted during the transport movement Blown past the side of the bag. A generated by it Negative air pressure can move the mutual a certain amount Effect bag walls. The one by moving towards each other the gripping member can cause the bag to be in the open state thereby being stabilized and kept upright.
- the invention is based on this prior art based on the task of being economically viable while doing so space-saving flat bag machine for filling successively fed flat bags and a corresponding procedure for opening these flat bags to specify such a flat bag machine.
- This invention is for the method by the features of Claim 1 and for the flat bag machine used in the method given by the features of claim 3.
- the invention is based on the finding that if already in the first work station air both from above against the top of the bag as well the bag is blown past sideways can be opened optimally. This allows a special Save the bag opening station.
- This enables at State of the art comparable space conditions Arrange an additional work station, such as an additional filling station.
- the bags will namely often not with a single type of food filled, so that then several filling stations one after the other must be arranged. In this way, the contents can then can be composed of several mixture components.
- the one in the space between the workstations Contains existing device for opening the bag Facilities around the two side edges of the bag towards each other at least in the area of its opening move. In combination, blown air can also be opened the bag used.
- the device parts attached to the Lateral edges of the bag lie or the side edges seize, are moved relative to each other. The movement of the Both parts of the device can preferably be in guides take place, for example, V-shaped or parallel can be aligned with each other.
- the air outlet nozzle is therefore preferably designed so that it either a more or less overlapping the space has slot-like discharge opening, or accordingly several individual blow-out openings arranged side by side having.
- the invention is based on the in the drawing illustrated embodiment described in more detail and explained.
- the single figure shows a schematic representation a part of a clocked flat bag machine.
- Fig. 1 there are two work stations 12, 14 of a flat bag machine 10 partially shown.
- a flat bag 16 is present in the first work station 12. It is on its two side seams 18, 20 each a gripping member 22, 24 gripped like pliers. In its floor area the bag is closed by a bottom seam 26. The bag is not on its upper side 28 yet locked.
- the bag is in this work station 12 in a not shown been transported in a manner known per se.
- the bag is first folded by one by one endless roll of drawn web and by subsequent Welding the side seams 18, 20 and the bottom seam 26 been made.
- a first work station 12 becomes a lateral one Gripping members 22, 24 bags held in its upper region 16 along a path 30 to the subsequent second work station 14 offset.
- the two gripping members 22, 24 are not only parallel to move from their first position in the Workstation 12 to its second position in the workstation 14 postponed, but they are moving additionally moved relatively towards each other (arrow 32, 34).
- the two gripping members 22, 24 therefore have their position in the work station 14 a mutual distance a, the is smaller than the corresponding distance A in the work station 12.
- the gripping members 22, 24 in each led a guide, not shown.
- the mutual The distance between the gripping members 22, 24 can be reduced, the further the gripping members 22, 24 are from the work station 12 move away, or he can focus on a certain smaller one Decrease value.
- V-shaped changing by a certain amount Guides for the two gripping members 22, 24 can be such Cause the bag to open. Because of the relative high point of attack of the two gripping members 22, 24 the side seams 18, 20 incline the side seams 18, 20 towards each other when opening.
- a nozzle body 36 is located above the first work station 12 available, which in the present example also includes the area covered between the two workstations 12, 14.
- This nozzle body 36 has several on its underside 38 Openings 40 are present. Some of these openings are above the respective position of the top side 28 of the bag 16 and laterally offset laterally to this upper side 28 available.
- Air can enter the nozzle body via an air supply line 42 36 initiated and from the openings 40 down (Arrows 44) are blown out.
- the amount of along the Path 30 each emerging air grows along path 30 on. So in the present case, the number and the cross-sectional size of openings 40 at the beginning of path 30 are smaller than at the end of path 30.
- This air flows against the upper one Page 28 of the bag 16 in the area of the first work station 12 and in the present example also in the area between the two work stations 12, 14.
- the air consequently flows also along the side of the two walls 46, 48 of the bag 16, while this is in the first work station 12 and in the space between the two work stations 12, 14 located.
- air is released through the openings 40 blown from above against the upper side 28 of the bag 16. This causes a partial opening of the bag 16 by at least slight movement of the two bag walls apart 46, 48 in the area of the upper side 28.
- the bag 16.1 is already opened in the work station 14 on.
- the gripping members 22, 24 have in this work station 14 a mutual distance a, which is smaller as their distance A in the first work station 12.
- the bag 16.1 can be filled immediately in this work station 14 become.
- the filling process can be compared to the prior art so that a work station can be done earlier. If a Bottom-folded bags can be used in the second Workstation 14 such a bag in the area of his Bottom fold can be opened, which in the prior art only be carried out in a third work station can.
- Rotary machines are also particularly advantageous because because the mass of the rotary machine can be reduced, or if an additional filling station is arranged not to be enlarged compared to the prior art needs. A too large mass of the rotary machine could reduce it force the possible number of cycles.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Making Paper Articles (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Öffnen von Flachbeuteln und eine Flachbeutelmaschine zum Durchführen des Verfahrens, nach dem Oberbegriff der Ansprüche 1 und 3. Eine derartige Flachbeutelmaschine besitzt mehrere nacheinander angeordnete Arbeitsstationen. In diesen Arbeitsstationen werden oben offene Beutel durch Umschlagen einer von einer endlosen Rolle abgezogenen Kunststoffbahn und durch anschließendes Längs- und Querverschweißen dieser Bahn hergestellt, oder es werden vorgefertigte Beutel von einem Stapel entnommen und anschließend mit zum Beispiel Lebensmitteln befüllt. Anschließend wird die Öffnung der Beutel verschweißt. Die in die Beutel eingefüllten Lebensmittel können in pulveriger, bröckchenweiser oder sonstiger Konsistenz vorhanden sein. Die Bahn ist materialmäßig so ausgestattet, daß ihre beispielsweise durch eine Längsfaltung aufeinanderliegenden Bahnbereiche durch Versiegeln oder Verschweißen miteinander verschlossen werden können.The invention relates to a Procedure for opening flat bags and a flat bag machine for performing the method, according to the preamble of claims 1 and 3. Such a flat bag machine has several successively arranged work stations. In these work stations bags are opened at the top by turning one from an endless roll of plastic web and pulled through subsequent longitudinal and transverse welding of this web manufactured, or pre-made bags by one Stack removed and then with, for example, food filled. Then the opening of the bag welded. The food stuffed in the bag can be in powdery, chunky or other consistency to be available. The web is materially equipped so that its, for example, by a longitudinal fold superimposed web areas by sealing or Welding can be closed together.
Die durch Zusammenfalten entstandene, oben offene, doppellagige Kunststoffbahn wird nach ihrem abschnittsweisen vertikalen und unteren horizontalen Verschweißen innerhalb ihrer vertikalen Schweißnähte zertrennt. Dadurch entstehen einzelne, oben noch nicht verschlossene Beutel. Bevor der Beutel befüllt werden kann, müssen seine oberen freien gegenüberliegenden Ränder auseinandergezogen werden. Ist der Beutel nicht korrekt geöffnet, kann die vorgesehene Befüllung nicht oder nicht vollständig durchgeführt werden. The double-layered, open at the top, created by folding Plastic sheet is made according to its section vertical and lower horizontal welding within their vertical welds severed. This creates individual bags not yet closed at the top. Before the Bags that can be filled must have their top free opposite ones Edges are pulled apart. Is the Bag not opened correctly, the intended filling can not or not completely.
Bekannt sind getaktet arbeitende Flachbeutelmaschinen, bei denen die einzelnen Arbeitsschritte im Zusammenhang mit dem Herstellen, Öffnen und Befüllen der einzelnen Beutel nacheinander taktweise erfolgen. So ist aus der WO-A-91 17924 eine gattungsgemäße Flachbeutelmaschine zum Befüllen von nacheinander zugeführten Flachbeuteln sowie ein gattungsgemäßes Verfahren zum Öffnen solcher Flachbeutel auf einer derartigen Flachbeutelmaschine bekannt. Zum Öffnen der Beutel werden die den jeweiligen Beutel an seinen gegenüberliegenden beiden Seitenrändern haltenden Greiforgane, die den Beutel in einer ersten Arbeitsstation ergriffen haben, während ihrer Transportbewegung zu einer zweiten Arbeitsstation aufeinander zu bewegt. Während der Transportbewegung wird Luft gezielt seitlich an dem Beutel vorbeigeblasen. Ein dadurch erzeugter Luftunterdruck kann ein gewisses gegenseitiges Wegbewegen der Beutelwände bewirken. Der durch ein aufeinander zu Bewegen der Greiforgane bewirkte geöffnete Zustand des Beutels kann dadurch stabilisiert und aufrecht gehalten werden.Clocked flat-bag machines are known for which the individual steps in connection with the Manufacturing, opening and filling the individual bags one after the other cyclically. So is from WO-A-91 17924 a generic flat bag machine for filling successively fed flat bags and a generic one Process for opening such flat bags on a known such flat bag machine. To open the bag the respective bag will be at its opposite gripping members that hold the bag in have taken a first workstation during their Transport movement to a second work station on top of each other too moved. Air is targeted during the transport movement Blown past the side of the bag. A generated by it Negative air pressure can move the mutual a certain amount Effect bag walls. The one by moving towards each other the gripping member can cause the bag to be in the open state thereby being stabilized and kept upright.
Aus der EP-A-129 502 ist es hinsichtlich des Öffnens von zu befüllenden Beuteln bekannt, die gegenüberliegenden Beutelwände durch Sauger nach außen zu bewegen. Bei dieser voneinander weg Bewegung der oberen Beutelränder müssen sich die Seitenränder des betreffenden Beutels aufeinander zu bewegen. Das bedeutet, daß die beiden Greiforgane, die die beiden gegenüberliegenden Seitenränder des Beutels zwischen sich einklemmen und dadurch den Beutel halten, sich entsprechend aufeinander zu bewegen müssen. Das Auseinanderfahren der Sauger muß bewegungsmäßig koordiniert werden mit dem aufeinander zu Bewegen der Greiforgane. Dies bedeutet einen recht erheblichen Steuerungsaufwand. Dazu kommt, daß aufgrund der unterschiedlichen Größen der Beutel diese Steuerungsabstimmung in der Praxis variabel sein muß. Diese sich in der Praxis ergebenden Probleme haben dazu geführt, daß die Beutel im allgemeinen in einer anschließenden dritten Arbeitsstation nochmals geöffnet werden, beziehungsweise die vorhandene Öffnung nachgeformt wird. Dieses vollständige Öffnen kann durch in die bereits vorhandene Öffnung eintauchende Glieder erfolgen, durch die Luft in das Innere und insbesondere in den Bodenbereich des Beutels geblasen wird.From EP-A-129 502 it is regarding the opening of filling bags known, the opposite bag walls to move outside by suction. At this Movement of the upper bag edges must be apart the side edges of the relevant bag towards each other move. This means that the two gripping organs that the two opposite side edges of the bag between pinch and thereby hold the bag, accordingly have to move towards each other. The spreading apart the sucker must be coordinated with moving the gripping organs towards each other. this means quite a considerable amount of control. In addition due to the different sizes of the bags Control coordination in practice must be variable. This problems arising in practice have led to that the bags generally in a subsequent third Workstation be opened again, respectively the existing opening is reshaped. This complete Can open by dipping into the already existing opening Links are made through the air inside and is blown in particular in the bottom region of the bag.
Aus der vorbekannten BE-A-437 129 ist es bekannt, die den jeweiligen Beutel haltenden beiden Greifer zunächst mechanisch gesteuert zusammenzufahren. Erst anschließend wird von oben Luft in den geöffneten Beutel geblasen, um eine noch weitere Öffnung des Beutels zu erreichen.From the previously known BE-A-437 129 it is known that the two grippers holding each bag first mechanically controlled to move together. Only then will Air is blown into the opened bag from above, one more to achieve further opening of the bag.
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine wirtschaftlich günstige und dabei möglichst platzsparende Flachbeutelmaschine zum Befüllen von nacheinander zugeführten Flachbeuteln sowie ein entsprechendes Verfahren zum Öffnen dieser Flachbeutel auf einer derartigen Flachbeutelmaschine anzugeben.The invention is based on this prior art based on the task of being economically viable while doing so space-saving flat bag machine for filling successively fed flat bags and a corresponding procedure for opening these flat bags to specify such a flat bag machine.
Diese Erfindung ist für das Verfahren durch die Merkmale des Anspruchs 1 und für die bei dem Verfahren benutzte Flachbeutelmaschine durch die Merkmale des Anspruchs 3 gegeben. Die Erfindung basiert auf der Erkenntnis, daß dann, wenn bereits in der ersten Arbeitsstation Luft sowohl von oben gegen die obere Seite des Beutels als auch gleichzeitig an dem Beutel seitlich vorbeigeblasen wird, sich der Beutel optimal öffnen läßt. Dadurch läßt sich eine spezielle Beutelöffnungsstation einsparen. Dies ermöglicht bei zum Stand der Technik vergleichbaren Raumverhältnissen das Anordnen einer zusätzlichen Arbeitsstation, wie beispielsweise einer zusätzlichen Befüllstation. Die Beutel werden nämlich oftmals nicht mit einer einzigen Art von Lebensmittel befüllt, so daß dann mehrere Füllstationen nacheinander angeordnet sein müssen. Auf diese Weise kann das Füllgut dann aus mehreren Mischungskomponenten zusammengesetzt werden.This invention is for the method by the features of Claim 1 and for the flat bag machine used in the method given by the features of claim 3. The invention is based on the finding that if already in the first work station air both from above against the top of the bag as well the bag is blown past sideways can be opened optimally. This allows a special Save the bag opening station. This enables at State of the art comparable space conditions Arrange an additional work station, such as an additional filling station. The bags will namely often not with a single type of food filled, so that then several filling stations one after the other must be arranged. In this way, the contents can then can be composed of several mixture components.
Die in dem Zwischenraum zwischen den Arbeitsstationen vorhandene Vorrichtung zum Öffnen der Beutel enthält Einrichtungen, um die beiden Seitenränder des Beutels zumindest im Bereich seiner Öffnung aufeinander zu zu bewegen. In Kombination dazu wird auch Blasluft zum Öffnen der Beutel verwendet. Die Vorrichtungsteile, die an den Seitenrändern der Beutel anliegen oder die deren Seitenränder ergreifen, werden relativ zueinander bewegt. Die Bewegung der beiden Vorrichtungsteile kann vorzugsweise in Führungen erfolgen, die beispielsweise V-förmig oder auch parallel zueinander ausgerichtet sein können.The one in the space between the workstations Contains existing device for opening the bag Facilities around the two side edges of the bag towards each other at least in the area of its opening move. In combination, blown air can also be opened the bag used. The device parts attached to the Lateral edges of the bag lie or the side edges seize, are moved relative to each other. The movement of the Both parts of the device can preferably be in guides take place, for example, V-shaped or parallel can be aligned with each other.
Beim Einwirken von Blasluft auf die zu öffnende Seite des Beutels wird diese Blasluft auch während des Zeitraums aktiviert, in dem der Beutel von der einen Arbeitsstation zur anderen Arbeitsstation transportiert wird. Die Luftausblasdüse ist daher vorzugsweise so ausgebildet, daß sie entweder eine den Zwischenraum mehr oder weniger übergreifende schlitzartige Ausblasöffnung besitzt, oder entsprechend mehrere, nebeneinander angeordnete einzelne Ausblasöffnungen aufweist.When blowing air acts on the opening side of the This blown air also becomes pouch during the period activated in which the bag from one workstation to the is transported to another workstation. The air outlet nozzle is therefore preferably designed so that it either a more or less overlapping the space has slot-like discharge opening, or accordingly several individual blow-out openings arranged side by side having.
Nachdem es im Gegensatz zu dem aus der WO-A-91 17924 bekannten Beutelöffnungsverfahren nicht darauf ankommt, daß die Luft immer genau seitlich an dem zu öffnenden Beutel vorbeistreicht, kann eine Flachbeutelmaschine auch ohne größeren Aufwand als Rundläufermaschine ausgebildet werden. In contrast to that from WO-A-91 17924 known bag opening method does not matter that the air is always exactly on the side of the bag to be opened passed, a flat bag machine can also be used without greater effort can be trained as a rotary machine.
Der konstruktive Aufwand, der erforderlich ist, um die genaue Ausrichtung der Luftströmung nur an den Seitenwänden der Beutel bei einer bogenförmigen Transportbewegung sicherzustellen, ist nämlich entbehrlich.The design effort that is required to get the exact Alignment of the air flow only on the side walls of the Ensure bags during an arcuate transport movement, is namely unnecessary.
Die Erfindung wird im folgenden anhand des in der Zeichnung dargestellten Ausführungsbeispiels näher beschrieben und erläutert. Die einzige Figur zeigt in schematischer Darstellung einen Teil einer getaktet arbeitenden Flachbeutelmaschine. The invention is based on the in the drawing illustrated embodiment described in more detail and explained. The single figure shows a schematic representation a part of a clocked flat bag machine.
In Fig. 1 sind zwei Arbeitsstationen 12, 14 einer Flachbeutelmaschine
10 teilweise dargestellt.In Fig. 1 there are two
In der ersten Arbeitsstation 12 ist ein Flachbeutel 16 vorhanden.
Er ist an seinen beiden Seitennähten 18, 20 von je
einem Greiforgan 22, 24 zangenartig ergriffen. In seinem Bodenbereich
ist der Beutel durch eine Bodennaht 26 verschlossen.
Auf seiner oberen Seite 28 ist der Beutel noch nicht
verschlossen.A
In diese Arbeitsstation 12 ist der Beutel in nicht dargestellter,
an sich bekannter Weise hineintransportiert worden.
Der Beutel ist dabei vorher durch einmal Falten einer von einer
endlosen Rolle abgezogenen Bahn und durch anschließendes
Verschweißen der Seitennähte 18, 20 sowie der Bodennaht 26
hergestellt worden.The bag is in this
Aus einer ersten Arbeitsstation 12 wird der von seitlichen
Greiforganen 22, 24 in seinem oberen Bereich gehaltene Beutel
16 längs eines Weges 30 zu der nachfolgenden zweiten Arbeitsstation
14 versetzt. Während der Transportbewegung längs des
Weges 30 werden die beiden Greiforgane 22, 24 nicht nur parallel
zur Transportbewegung aus ihrer ersten Position in der
Arbeitsstation 12 zu ihrer zweiten Position in der Arbeitsstation
14 verschoben, sondern sie werden während ihrer Bewegung
zusätzlich relativ aufeinander zu bewegt (Pfeil 32, 34).
Die beiden Greiforgane 22,24 besitzen daher in ihrer Position
in der Arbeitsstation 14 einen gegenseitigen Abstand a, der
kleiner ist als der entsprechende Abstand A in der Arbeitsstation
12. Längs des Weges 30 sind die Greiforgane 22, 24 in
jeweils einer nicht dargestellten Führung geführt. Der gegenseitige
Abstand der Greiforgane 22, 24 kann kleiner werden,
je weiter sich die Greiforgane 22, 24 von der Arbeitsstation
12 wegbewegen, oder er kann sich auf einen bestimmten kleineren
Wert verkleinern. In Transportrichtung sich im vorliegenden
Beispielsfall V-förmig um ein bestimmtes Maß verändernde
Führungen für die beiden Greiforgane 22, 24 können derartige
Öffnungsbewegungen des Beutels bewirken. Auf Grund des relativ
hohen Angriffspunktes der beiden Greiforgane 22, 24 an
den Seitennähten 18, 20 neigen sich die Seitennähte 18, 20
beim Öffnen aufeinander zu.A
Oberhalb der ersten Arbeitsstation 12 ist ein Düsenkörper 36
vorhanden, der im vorliegenden Beispielsfall auch den Bereich
zwischen den beiden Arbeitsstationen 12, 14 überdeckt. In
diesem Düsenkörper 36 sind auf seiner Unterseite 38 mehrere
Öffnungen 40 vorhanden. Diese Öffnungen sind teilweise oberhalb
der jeweiligen Position der oberen Seite 28 des Beutels
16 als auch seitlich quer versetzt zu dieser oberen Seite 28
vorhanden. Über eine Luftzuleitung 42 kann Luft in den Düsenkörper
36 eingeleitet und aus den Öffnungen 40 nach unten
(Pfeile 44) herausgeblasen werden. Die Menge der längs des
Weges 30 jeweils austretenden Luft wächst längs des Weges 30
an. So sind im vorliegenden Fall die Anzahl und die Querschnittsgröße
der Öffnungen 40 am Anfang des Weges 30 kleiner
als am Ende des Weges 30. Diese Luft strömt gegen die obere
Seite 28 des Beutels 16 im Bereich der ersten Arbeitsstation
12 und im vorliegenden Beispielsfall auch im Bereich zwischen
den beiden Arbeitsstationen 12, 14. Die Luft strömt folglich
auch seitlich an den beiden Wänden 46, 48 des Beutels 16 entlang,
während dieser sich in der ersten Arbeitsstation 12 und
im Zwischenraum zwischen den beiden Arbeitsstationen 12, 14
befindet.A
In der ersten Arbeitsstation 12 wird Luft durch die Öffnungen
40 von oben gegen die obere Seite 28 des Beutels 16 geblasen.
Dies bewirkt ein teilweises Öffnen des Beutels 16 durch zumindest
geringfügiges Voneinanderwegbewegen der beiden Beutelwände
46, 48 im Bereich der oberen Seite 28. In the
Während der anschließenden Bewegung des Beutels 16 längs des
Weges 30 verkleinert sich der relative Abstand zwischen den
beiden Greiforganen 22, 24 (Pfeile 32, 34) bis auf einen Mindestabstand
a. Gleichzeitig wird von oben nach wie vor Luft
durch die Öffnungen 40 auf den Beutel 16 geblasen. Der Öffnungsvorgang
verstärkt sich, da Luft von oben auch in den
Beutel hineingeblasen wird und gleichzeitig die Seitennähte
18, 20 insbesondere im Bereich der oberen Seite 28 des Beutels
16 aufeinander zubewegt werden.During the subsequent movement of the
In der Arbeitsstation 14 kommt der Beutel 16.1 bereits geöffnet
an. Die Greiforgane 22, 24 haben in dieser Arbeitsstation
14 einen gegenseitigen Abstand a voneinander, der kleiner ist
als ihr Abstand A in der ersten Arbeitsstation 12. Der Beutel
16.1 kann in dieser Arbeitsstation 14 also sofort befüllt
werden. Der Befüllvorgang kann gegenüber dem Stand der Technik
damit eine Arbeitsstation früher erfolgen. Sofern ein
Beutel mit Bodenfaltung vorhanden ist, kann in der zweiten
Arbeitsstation 14 ein derartiger Beutel auch im Bereich seiner
Bodenfaltung geöffnet werden, was beim Stand der Technik
erst in einer dritten Arbeitsstation durchgeführt werden
kann.The bag 16.1 is already opened in the
Das Einsparen einer Arbeitsstation ist vor allem bei sogenannten Rundläufermaschinen auch deswegen besonders vorteilhaft, da die Masse des Rundläufers verkleinert werden kann, bzw. bei Anordnung einer zusätzlichen weiteren Füllstation gegenüber dem Stand der Technik nicht vergrößert zu werden braucht. Eine zu große Masse des Rundläufers könnte eine Reduzierung der möglichen Taktzahl erzwingen.Saving a workstation is especially so-called Rotary machines are also particularly advantageous because because the mass of the rotary machine can be reduced, or if an additional filling station is arranged not to be enlarged compared to the prior art needs. A too large mass of the rotary machine could reduce it force the possible number of cycles.
Claims (10)
- Method of opening successively fed flat bags (16), which are to be filled in a flat-bag machine (10), with the aid of air (arrows 44) blown onto the bags (16) from above, it being the case that between a first operating station (12) of the flat-bag machine (10), in which the bags (16) are gripped on their two opposite side borders (18, 20) by gripping elements (22, 24) which can be moved towards one another, and an adjoining, second operating station (14), in which the bags (16) are filled, opening takes place, by virtue of the gripping elements (22, 24) being moved towards one another, such that the respective bag (16.1) is already open when it enters the second operating station (14), characterized in thatin a first method step, in the first operating station (12), air is blown against the top side (28) of the bag (16) and, at the same time, blown laterally past the bag (16), and thenin a second method step, during transportation of the bag (16) from the first operating station (12) to the next, adjoining operating station (14), the gripping elements (22, 24) are moved towards one another and, at the same time, air is blown onto the bag (16) from above and is blown laterally past the bag (16).
- Method according to Claim 1, characterized in thata circulating machine is used as the flat-bag machine.
- Flat-bag machine (10) for implementing the method for filling successively fed flat bags (16) according to Claim 1 or 2,having at least one first operating station (12) for gripping the bags (16),having at least one second operating station (14) for filling the bags (16),having a device (22, 24) for transporting the bags between individual operating stations,having a device (32, 34, 44) which is intended for at least partially opening the bags (16) in the region between the first operating station (12) and the following, second operating station (14) and comprises gripping elements (22, 24), by means of which the opposite side borders (18, 20) of the bag (16) can be gripped and can be moved towards one another (32, 34) at least in the region of the opening of said bag, and also comprises an air stream (arrow 44) which is directed from above onto the bags (16) which are to be opened,
characterized in thatthe air stream can be produced as early as in the region of the first operating station (12),along the transporting path (30) between the two operating stations (12, 14) it is possible to produce, at the same time, the movement of the gripping elements (22, 24) towards one another and the air stream (44) onto the bag,the air stream is directed past the outside of the two side walls of the bag (16) and directed into the interior of the bag (16). - Flat-bag machine according to Claim 3, characterized in thatthe gripping element (22, 24) provided in each case on one side border (18) and on the other side border (20) is guided in the region between the two operating stations (12, 14) such that the distance (a) between the two gripping elements decreases to an adjustable minimum amount as the size of the path (30) between the gripping elements and the first operating station (12) increases.
- Flat-bag machine according to either of Claims 3 and 4, characterized in thatit is also possible to produce the air stream in the region of the second operating station.
- Flat-bag machine according to one of Claims 3 to 5, characterized in thatthere is a slit-like discharge opening for the air stream.
- Flat-bag machine according to one of Claims 3 to 6, characterized in thatthere are a plurality of discharge openings (40) arranged one beside the other.
- Flat-bag machine according to Claims 6 or 7, characterized in thatthe air stream in each case can be directed through a predetermined group of discharge openings (40).
- Flat-bag machine according to one of Claims 6 to 8, characterized in thatthe air stream can be directed cyclically through the discharge opening or the discharge openings (40).
- Flat-bag machine according to one of Claims 6 to 9, characterized in thatthe discharge openings (40) are provided such that the quantity of air (arrow 44) emerging along the path (30) between the two operating stations (12, 14) increases.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29502128U DE29502128U1 (en) | 1995-02-09 | 1995-02-09 | Flat bag machine |
DE29502128U | 1995-02-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0726202A1 EP0726202A1 (en) | 1996-08-14 |
EP0726202B1 true EP0726202B1 (en) | 1999-07-07 |
Family
ID=8003677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96101707A Expired - Lifetime EP0726202B1 (en) | 1995-02-09 | 1996-02-07 | Machine for making flat bags |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0726202B1 (en) |
DE (2) | DE29502128U1 (en) |
ES (1) | ES2136332T3 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5743070A (en) * | 1996-08-16 | 1998-04-28 | Automated Packaging Systems, Inc. | Packaging machine, material and method |
DE19744899A1 (en) * | 1997-10-10 | 1999-04-15 | Indag Gmbh | Method and device for treating flexible bags |
NL1009179C2 (en) | 1998-05-15 | 1999-11-16 | L & L Gr Nederland B V | Device for spreading open an edge area of superimposed flexible material webs. |
ES2215455B1 (en) * | 2002-04-23 | 2005-12-16 | Taller Autorema, S.L. | BASIC AND EASY OPENING COVER PACKING MACHINE. |
ITPR20020078A1 (en) * | 2002-12-20 | 2004-06-21 | Procomac Spa | PROCEDURE AND OPENING DEVICE OF A FLEXIBLE BAG. |
CN102275654B (en) * | 2011-05-10 | 2012-10-10 | 哈尔滨博实自动化股份有限公司 | Material packing method and device for transversely conveying full bags |
CN103662125A (en) * | 2013-11-30 | 2014-03-26 | 南通宝田包装科技有限公司 | Filling mechanism suitable for packaging bags |
CN104925312B (en) * | 2015-06-14 | 2017-04-05 | 潼南县三鑫林业综合开发有限公司 | Food bagging production line |
EP4183566A1 (en) | 2021-11-22 | 2023-05-24 | Harro Höfliger Verpackungsmaschinen GmbH | Device for sealing three-dimensional objects in the bag opening of a film bag |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE437129A (en) * | ||||
EP0129502B1 (en) * | 1983-06-15 | 1988-08-10 | Mitsubishi Jukogyo Kabushiki Kaisha | Apparatus for filling bags |
US4956964A (en) * | 1989-03-13 | 1990-09-18 | R. A. Jones & Co. Inc. | Adjustable pouch form, fill, seal machine |
-
1995
- 1995-02-09 DE DE29502128U patent/DE29502128U1/en not_active Expired - Lifetime
-
1996
- 1996-02-07 EP EP96101707A patent/EP0726202B1/en not_active Expired - Lifetime
- 1996-02-07 ES ES96101707T patent/ES2136332T3/en not_active Expired - Lifetime
- 1996-02-07 DE DE59602353T patent/DE59602353D1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE59602353D1 (en) | 1999-08-12 |
EP0726202A1 (en) | 1996-08-14 |
DE29502128U1 (en) | 1995-04-20 |
ES2136332T3 (en) | 1999-11-16 |
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