EP2112108A1 - Device for transporting film - Google Patents
Device for transporting film Download PDFInfo
- Publication number
- EP2112108A1 EP2112108A1 EP09155314A EP09155314A EP2112108A1 EP 2112108 A1 EP2112108 A1 EP 2112108A1 EP 09155314 A EP09155314 A EP 09155314A EP 09155314 A EP09155314 A EP 09155314A EP 2112108 A1 EP2112108 A1 EP 2112108A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vacuum
- negative pressure
- film
- openings
- suction surface
- 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.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
- B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
- B65H5/224—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices by suction belts
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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
- B65B41/00—Supplying or feeding container-forming sheets or wrapping material
- B65B41/02—Feeding sheets or wrapper blanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H11/00—Feed tables
- B65H11/007—Feed tables with front stop arrangements
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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
- B65B21/00—Packaging or unpacking of bottles
- B65B21/24—Enclosing bottles in wrappers
- B65B21/245—Enclosing bottles in wrappers in flexible wrappers, e.g. foils
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/30—Suction means
- B65H2406/36—Means for producing, distributing or controlling suction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/30—Suction means
- B65H2406/36—Means for producing, distributing or controlling suction
- B65H2406/362—Means for producing, distributing or controlling suction adjusting or controlling distribution of vacuum transversally to the transport direction, e.g. according to the width of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/30—Suction means
- B65H2406/36—Means for producing, distributing or controlling suction
- B65H2406/362—Means for producing, distributing or controlling suction adjusting or controlling distribution of vacuum transversally to the transport direction, e.g. according to the width of material
- B65H2406/3622—Means for producing, distributing or controlling suction adjusting or controlling distribution of vacuum transversally to the transport direction, e.g. according to the width of material adjusting or controlling distribution of vacuum in the transport direction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/175—Plastic
- B65H2701/1752—Polymer film
Definitions
- the present invention relates to a device for transporting film having the features of the preamble of claim 1.
- Packaging machines the containers, such as liquid containers or the like. often use film as a packaging material.
- the films used must be separated in appropriate size.
- the films are provided on rolls and separated by means of a cutting device in certain lengths, which corresponds approximately to the circumferential length of the objects to be packaged.
- the separated film sections are then transported to the further processed packaging machine, for example a film wrapping module or the like.
- the transport via a pressurizable with vacuum conveyor.
- perforated conveyor belts revolve around a planar device, to which vacuum can be applied, in particular a so-called vacuum body.
- the vacuum body has suction openings through which the negative pressure is applied, so that the film is sucked onto the conveyor belt.
- a non-slip transport of the film is possible.
- a conveyor belt transports a flat material, for example a film.
- negative pressure is used to hold the sheet material on the conveyor belt.
- films are transported, which have a smaller width than the vacuum conveyor belt. This results in the problem that in the transport of narrow films laterally free vacuum is applied, resulting in a loss of power and a false suction of false air. As a result, it may happen that the corresponding film on the conveyor belt is sucked only insufficient. If the local suction power is insufficient, there is also the risk that the film loses its position on the conveyor belt or changes and can no longer properly positioned to be transferred to the objects to be packaged.
- a device according to the invention for transporting film is frequently used to transport the film or the film sections to a subsequent packaging device for packaging containers, in particular filled liquid containers such as bottles, for example.
- This may be the transport of separated film sections, but also of film webs, for example of a foil endless belt act.
- such a device is used in a device for separating film from a roll and feeding it to a film wrapping module.
- At least one device for applying a negative pressure for example a vacuum generator, is associated with the device.
- This device may, for example, a vacuum pump, a vacuum ejector, or the like. be.
- the device has an upper and a lower side, wherein on the upper side first openings are formed through which the suction takes place due to the applied negative pressure.
- Around the device at least one, but preferably a plurality, conveyor belt is arranged.
- the conveyor belt or belts have second openings which form a suction surface.
- the conveyor belts are used to transport the film. Through the openings in the belt, the suction effect of the negative pressure is exerted by the device described above on the conveyor belt on the transported film over it.
- the first suction openings on the upper side of the device may be formed, for example, slit-like.
- the openings may have a round, oval or otherwise shaped shape.
- the suction surface of the device can be limited by deliberately limiting it to the area used. As a result, a suction of false air and a loss of power can be avoided.
- the device has at least one means for adjusting the size and / or the shape of the suction surface.
- the effective suction area in the transport direction can be limited laterally, i. the means for limiting the suction surface are adjustable along the transport direction of the transport device.
- the effective suction area can be limited in so-called transport section areas, i. the means adjustably limit the suction area transversely to the transport direction.
- the means for limiting the suction surface comprise at least one slide.
- the slide can be arranged inside or outside the device for applying a negative pressure.
- the slider may preferably be an adjustable wall.
- the adjustable wall is preferably disposed within the means for applying a negative pressure between upper and lower sides thereof.
- the adjustable wall hermetically seals to the top and bottom of the device. Only by airtight completion is an effective limit possible.
- the adjustable wall can be changed in position electronically or mechanically controlled within the device.
- the adjustment can be done especially by motor.
- the at least one adjustable wall manually preset by moving accordingly.
- the subdivision of the transport device in at least two conveyor sections along the transport direction may be advantageous if less or no negative pressure is required toward the end of the conveyor since, for example, the film is no longer to be so firmly sucked on the conveyor. Otherwise, problems with the subsequent film wrapping module can occur when packaging small bottles. If the film adheres very firmly to the transport device due to excessive underpressure, it may happen that the second end of the film is not wrapped around the grouped bottles, but instead the first end of the film is pulled out from under the bottles. In order to avoid this, it may be advantageous to pressurize the last area of the transport device with vacuum, with normal pressure or with overpressure, depending on the objects to be packaged. This is by means of a separation means at least one adjustable wall transverse to the transport direction possible.
- another, arranged in the rear region, vacuum generator and / or a pressure generator or the like. be used to apply this under-defined area separately to under- or overpressure.
- two film webs are transported in parallel on a transport device described.
- the width of the at least one transported film web is sensed before or in the initial region of the device subjected to negative pressure, and the limitation of the useful surface is controlled accordingly.
- the limitation of the applied negative pressure on the effective effective area can also take place outside the device which can be subjected to negative pressure, for example by arranging cover elements between the upper side of the device which can be pressurized with the first openings and the conveyor belt with the second openings.
- the cover elements can also be arranged over the conveyor belt, so that both first openings of the device which can be subjected to negative pressure and second openings of the conveyor belts are covered.
- the cover can, for example, a sliding or plug metal, plastic or similar. be.
- the special cover plates on a fixed hole pattern serve as a template and are used to cover the first openings on the top of the device and / or the second openings of the conveyor belt in rows from outside to inside.
- each first opening of the device can be acted upon with negative pressure, for example by means of a hose connected individually to the device for generating the negative pressure and each hose can be selectively opened or closed.
- Further possibilities known to the person skilled in the art for limiting a surface to be pressurized are also to be covered by the invention.
- the means for applying the negative pressure to the means for adjusting the size and / or the shape of the suction surface is coupled such that the negative pressure performance in dependence on the shape and / or the size of the suction surface is controllable.
- a corresponding signal to the vacuum generating device are transmitted, so that their performance is adjusted accordingly and depending on the width of the film to be transported more or less negative pressure is generated.
- the generated negative pressure can be varied or adjusted depending on the film parameters. Depending on the thickness, density, stiffness, size and / or shape of the film, it is technically sensible to apply more or less negative pressure in order to achieve optimal transport of the film.
- FIGS. 1a and 1b show the known state of the art of a pressurizable conveyor belt 10 ( Fig. 1a ) with a device 20 to be acted upon with negative pressure ( Fig. 1 b) ,
- the device to be acted upon with negative pressure 20 is in Also referred to below as the vacuum body 20.
- Around the vacuum body 20 around conveyor belts 30 are arranged, which rotate around the vacuum body 20 in the transport direction TR.
- the vacuum body 20 has an upper and a lower side.
- the illustrated intake openings 22 are formed as slots.
- the openings 22 can also be round, oval, etc. formed.
- a device for generating negative pressure in particular a vacuum generator 24 is arranged, which generates the negative pressure in the suction region 25, which leads to the suction of air through the suction openings 22.
- the conveyor belts 30 also have openings 32 in the form of holes, perforations or the like. so that the applied vacuum via the openings 32 in the conveyor belt 30 sucks the film to be transported thereon.
- FIG. 2 shows an embodiment in which the suction surface can be limited to the used area used.
- two movable walls 40 are arranged within the vacuum body 20, which can be adjusted, for example, so as to cover at least one row of suction openings 22 along the transport direction TR.
- the movable walls 40 are brought by means of adjusting devices 42 in the desired position.
- the adjustment devices 42 may be, for example, hydraulically, pneumatically or motor-driven adjusting cylinders or other adjustment devices 42 known to the person skilled in the art.
- Fig. 3 shows an embodiment in which the useful surface can be limited by a movable wall transverse to the transport direction TR along the length of the vacuum body 20.
- the rear part of the vacuum body 20 thus has no negative pressure for sucking the film web to be transported.
- the rear part of the vacuum body 20 may be arranged with a further device for generating overpressure and / or underpressure 26.
- FIG. 4 shows the use of cover means 50 for confining the suction surface of the vacuum body 20 on the Nutz
- the at least one covering means 50 is in the illustrated embodiment a plug-in metal sheet, plastic or similar.
- the at least one covering means 50 may have a fixed drilling pattern in order to cover the suction openings 22 on the upper side of the vacuum body 20 in rows from outside to inside.
- the cover 50 may optionally between the top of the vacuum body 20 and the Conveyor belt 30, are mounted on the conveyor belt 30 or even within the vacuum body 20 directly below the suction openings 22.
- the invention is not limited to the above embodiments. Rather, a variety of variants and modifications are conceivable that make use of the inventive concept and therefore also fall within the scope.
Abstract
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zum Transport von Folie mit den Merkmalen des Oberbegriffs des Anspruchs 1.The present invention relates to a device for transporting film having the features of the preamble of claim 1.
Verpackungsmaschinen, die Behältnisse, beispielsweise Flüssigkeitsbehälter o.ä. verpacken, verwenden häufig Folien als Verpackungsmaterial. Die verwendeten Folien müssen in entsprechender Größe vereinzelt werden. Insbesondere werden die Folien auf Rollen bereitgestellt und mittels einer Schneid- bzw. Abtrennvorrichtung in bestimmten Längen abgetrennt, die in etwa der Umfangslänge der zu verpackenden Gegenstände entspricht. Die vereinzelten Folienabschnitte werden anschließend zur weiterverarbeiteten Verpackungsmaschine, beispielsweise ein Folieneinschlagmodul o.ä., transportiert. Beispielsweise geschieht der Transport über eine mit Unterdruck beaufschlagbare Fördervorrichtung. Hierbei umlaufen gelochte Förderriemen eine flächige Vorrichtung, an die Vakuum angelegt werden kann, insbesondere einen so genannten Vakuumkörper. Der Vakuumkörper weist Ansaugöffnungen auf, durch die der Unterdruck angelegt wird, so dass die Folie auf den Förderriemen angesaugt wird. Dadurch ist ein rutschfreier Transport der Folie möglich.
Beispielsweise beschreibt
Auf dem oben beschriebenen Vakuumförderband werden auch Folien transportiert, die eine geringere Breite als das Vakuumförderband aufweisen. Hierbei ergibt sich das Problem, dass bei dem Transport schmaler Folien seitlich umsonst Unterdruck angelegt wird, was zu einem Leistungsverlust und einem Fehlansaugen von Falschluft führt. Dadurch kann es passieren, dass die entsprechende Folie auf den Förderriemen nur ungenügend angesaugt wird. Ist die lokale Saugleistung ungenügend, besteht zudem die Gefahr, dass die Folie ihre Position auf dem Förderriemen verliert oder ändert und nicht mehr richtig positioniert an die zu verpackenden Gegenstände übergeben werden kann.Packaging machines, the containers, such as liquid containers or the like. often use film as a packaging material. The films used must be separated in appropriate size. In particular, the films are provided on rolls and separated by means of a cutting device in certain lengths, which corresponds approximately to the circumferential length of the objects to be packaged. The separated film sections are then transported to the further processed packaging machine, for example a film wrapping module or the like. For example, the transport via a pressurizable with vacuum conveyor. In this case, perforated conveyor belts revolve around a planar device, to which vacuum can be applied, in particular a so-called vacuum body. The vacuum body has suction openings through which the negative pressure is applied, so that the film is sucked onto the conveyor belt. As a result, a non-slip transport of the film is possible.
For example, describes
On the vacuum conveyor belt described above, also films are transported, which have a smaller width than the vacuum conveyor belt. This results in the problem that in the transport of narrow films laterally free vacuum is applied, resulting in a loss of power and a false suction of false air. As a result, it may happen that the corresponding film on the conveyor belt is sucked only insufficient. If the local suction power is insufficient, there is also the risk that the film loses its position on the conveyor belt or changes and can no longer properly positioned to be transferred to the objects to be packaged.
Das Ziel der Erfindung besteht darin, unabhängig von den Betriebsbedingungen einen sicheren und effektiven Transport der Folie zu gewährleisten.
Dieses Ziel der Erfindung wird mit dem Gegenstand des unabhängigen Anspruchs erreicht. Merkmale vorteilhafter Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.The aim of the invention is to ensure a safe and effective transport of the film, regardless of the operating conditions.
This object of the invention is achieved with the subject matter of the independent claim. Features of advantageous developments of the invention will become apparent from the dependent claims.
Eine erfindungsgemäße Vorrichtung zum Transport von Folie, wird häufig verwendet, um die Folie bzw. die Folienabschnitte zu einer nachfolgenden Verpackungsvorrichtung zum Verpacken von Behältnissen, insbesondere von gefüllten Flüssigkeitsbehältern wie beispielsweise Flaschen, zu Gebinden zu transportieren. Es kann sich hierbei um den Transport von vereinzelten Folienabschnitten, aber auch von Folienbahnen, beispielsweise von einem Folie-Endlosband, handeln. Beispielsweise findet eine solche Vorrichtung in einer Einrichtung zum Vereinzeln von Folie von einer Rolle und Zuführung derselben zu einem Folieneinschlagsmodul Anwendung.A device according to the invention for transporting film is frequently used to transport the film or the film sections to a subsequent packaging device for packaging containers, in particular filled liquid containers such as bottles, for example. This may be the transport of separated film sections, but also of film webs, for example of a foil endless belt act. For example, such a device is used in a device for separating film from a roll and feeding it to a film wrapping module.
Der Vorrichtung ist wenigstens eine Einrichtung zum Anlegen eines Unterdrucks, beispielsweise ein Vakuumerzeuger, zugeordnet. Diese Einrichtung kann beispielsweise eine Vakuumpumpe, ein Vakuumejektor o.ä. sein. Die Einrichtung weist eine obere und eine untere Seite auf, wobei an der oberen Seite erste Öffnungen ausgebildet sind, durch die das Ansaugen aufgrund des beaufschlagten Unterdrucks erfolgt. Um die Einrichtung herum ist wenigstens ein, vorzugsweise jedoch mehrere, Förderriemen angeordnet. Der bzw. die Förderriemen weisen zweite Öffnungen auf, die eine Ansaugfläche ausbilden. Die Förderriemen dienen dem Transport der Folie. Durch die Öffnungen in den Riemen wird die Ansaugwirkung des Unterdrucks von der oben beschriebenen Einrichtung über die Förderriemen auf die darüber transportierte Folie ausgeübt.At least one device for applying a negative pressure, for example a vacuum generator, is associated with the device. This device may, for example, a vacuum pump, a vacuum ejector, or the like. be. The device has an upper and a lower side, wherein on the upper side first openings are formed through which the suction takes place due to the applied negative pressure. Around the device at least one, but preferably a plurality, conveyor belt is arranged. The conveyor belt or belts have second openings which form a suction surface. The conveyor belts are used to transport the film. Through the openings in the belt, the suction effect of the negative pressure is exerted by the device described above on the conveyor belt on the transported film over it.
Die ersten Ansaugöffnungen auf der oberen Seite der Einrichtung können beispielsweise schlitzartig ausgebildet sein. Alternativ können die Öffnungen eine runde, ovale oder anderweitig gestaltete Form aufweisen.The first suction openings on the upper side of the device may be formed, for example, slit-like. Alternatively, the openings may have a round, oval or otherwise shaped shape.
Die Ansaugfläche der Vorrichtung kann durch gezieltes Beschränken auf die genutzte Fläche begrenzt werden. Dadurch werden ein Ansaugen von Falschluft und ein Leistungsverlust vermieden. Insbesondere weist die Vorrichtung mindestens ein Mittel zur Einstellung der Größe und/oder der Form der Ansaugfläche auf.The suction surface of the device can be limited by deliberately limiting it to the area used. As a result, a suction of false air and a loss of power can be avoided. In particular, the device has at least one means for adjusting the size and / or the shape of the suction surface.
Gemäß einer bevorzugten Ausführungsform kann die wirksame Ansaugfläche in Transportrichtung seitlich begrenzt werden, d.h. die Mittel zur Begrenzung der Ansaugfläche sind entlang der Transportrichtung der Transportvorrichtung verstellbar.According to a preferred embodiment, the effective suction area in the transport direction can be limited laterally, i. the means for limiting the suction surface are adjustable along the transport direction of the transport device.
Gemäß einer weiteren Ausführungsform kann die wirksame Ansaugfläche in so genannten Transportabschnittsbereichen begrenzt werden, d.h. dass die Mittel die Ansaugfläche quer zur Transportrichtung verstellbar begrenzen.According to a further embodiment, the effective suction area can be limited in so-called transport section areas, i. the means adjustably limit the suction area transversely to the transport direction.
Die Mittel zur Begrenzung der Ansaugfläche umfassen mindestens einen Schieber. Der Schieber kann inner- oder außerhalb der Einrichtung zum Anlegen eines Unterdrucks angeordnet sein. Bei dem Schieber kann es sich vorzugsweise um eine verstellbare Wand handeln.The means for limiting the suction surface comprise at least one slide. The slide can be arranged inside or outside the device for applying a negative pressure. The slider may preferably be an adjustable wall.
Die verstellbare Wand ist vorzugsweise innerhalb der Einrichtung zum Anlegen eines Unterdrucks zwischen oberer und unterer Seite derselben angeordnet. Die verstellbare Wand schließt luftdicht mit der oberen und der unteren Seite der Einrichtung ab. Nur durch das luftdichte Abschließen ist ein wirksames Begrenzen möglich.The adjustable wall is preferably disposed within the means for applying a negative pressure between upper and lower sides thereof. The adjustable wall hermetically seals to the top and bottom of the device. Only by airtight completion is an effective limit possible.
Die verstellbare Wand kann innerhalb der Einrichtung elektronisch oder mechanisch gesteuert in ihrer Position verändert werden. Die Verstellung kann insbesondere motorisch erfolgen. Allerdings besteht auch die Möglichkeit, dass vor Beginn des Verpackens einer neuen Gebindeart, die wenigstens eine verstellbare Wand manuell durch Verschieben entsprechend voreingestellt wird.The adjustable wall can be changed in position electronically or mechanically controlled within the device. The adjustment can be done especially by motor. However, there is also the possibility that prior to the beginning of the packaging of a new container type, the at least one adjustable wall manually preset by moving accordingly.
Die Unterteilung der Transportvorrichtung in mindestens zwei Förderabschnitte entlang der Transportrichtung kann vorteilhaft sein, wenn zum Ende der Fördervorrichtung hin weniger bzw. kein Unterdruck benötigt wird, da beispielsweise die Folie nicht mehr so fest an der Fördervorrichtung angesaugt werden soll. Bei der Verpackung von kleinen Flaschen kann es sonst zu Problemen bei dem nachfolgenden Folieneinschlagmodul kommen. Klebt die Folie aufgrund eines zu hohen Unterdrucks sehr fest an der Transportvorrichtung, kann es passieren, dass nicht das zweite Folienende um die gruppierten Flaschen herumgeschlagen wird, sondern dass stattdessen das erste Folienende unter den Flaschen herausgezogen wird. Um dies zu vermeiden kann es vorteilhaft sein, den letzten Bereich der Transportvorrichtung je nach zu verpackenden Gegenständen mit Unterdruck, mit normalem Druck oder mit Überdruck zu beaufschlagen. Dies ist durch eine Abtrennung mittels mindestens einer einstellbaren Wand quer zur Transportrichtung möglich. Gegebenenfalls kann ein weiterer, im hinteren Bereich angeordneter, Unterdruckerzeuger und/oder ein Überdruckerzeuger o.ä. verwendet werden, um diesen abgegrenzten Bereich gesondert mit Unter- oder Überdruck zu beaufschlagen.
Häufig werden auf einer beschriebenen Transportvorrichtung zwei Folienbahnen parallel transportiert. Gemäß einer bevorzugten Ausführungsform wird die Breite der wenigstens einen transportierten Folienbahn vor oder im Anfangsbereich der mit Unterdruck beaufschlagten Vorrichtung sensorisch ermittelt und die Begrenzung der Nutzfläche entsprechend gesteuert.The subdivision of the transport device in at least two conveyor sections along the transport direction may be advantageous if less or no negative pressure is required toward the end of the conveyor since, for example, the film is no longer to be so firmly sucked on the conveyor. Otherwise, problems with the subsequent film wrapping module can occur when packaging small bottles. If the film adheres very firmly to the transport device due to excessive underpressure, it may happen that the second end of the film is not wrapped around the grouped bottles, but instead the first end of the film is pulled out from under the bottles. In order to avoid this, it may be advantageous to pressurize the last area of the transport device with vacuum, with normal pressure or with overpressure, depending on the objects to be packaged. This is by means of a separation means at least one adjustable wall transverse to the transport direction possible. Optionally, another, arranged in the rear region, vacuum generator and / or a pressure generator or the like. be used to apply this under-defined area separately to under- or overpressure.
Often two film webs are transported in parallel on a transport device described. According to a preferred embodiment, the width of the at least one transported film web is sensed before or in the initial region of the device subjected to negative pressure, and the limitation of the useful surface is controlled accordingly.
Gemäß einer weiteren Ausführungsform kann die Begrenzung des angelegten Unterdrucks auf die effektive Nutzfläche auch außerhalb der mit Unterdruck beaufschlagbaren Einrichtung erfolgen, indem beispielsweise Abdeckelemente zwischen der oberen Seite der mit Unterdruck beaufschlagbaren Einrichtung mit den ersten Öffnungen und den Förderriemen mit den zweiten Öffnungen entsprechend angeordnet werden. Alternativ können die Abdeckelemente auch über den Förderiemen angeordnet werden, so dass sowohl erste Öffnungen der mit Unterdruck beaufschlagbaren Vorrichtung als auch zweite Öffnungen der Förderriemen abgedeckt werden.According to a further embodiment, the limitation of the applied negative pressure on the effective effective area can also take place outside the device which can be subjected to negative pressure, for example by arranging cover elements between the upper side of the device which can be pressurized with the first openings and the conveyor belt with the second openings. Alternatively, the cover elements can also be arranged over the conveyor belt, so that both first openings of the device which can be subjected to negative pressure and second openings of the conveyor belts are covered.
Das Abdeckelement kann beispielsweise ein Schiebe- oder Steckblech aus Metall, Kunststoff o.ä. sein. Gemäß einer bevorzugten Ausführungsform weisen die speziellen Abdeckbleche ein festgelegtes Bohrbild auf. Die Abdeckbleche dienen somit als Schablone und werden verwendet, um die ersten Öffnungen auf der Oberseite der Einrichtung und/oder die zweiten Öffnungen der Förderriemen reihenweise von außen nach innen abzudecken.The cover can, for example, a sliding or plug metal, plastic or similar. be. According to a preferred embodiment, the special cover plates on a fixed hole pattern. The cover plates thus serve as a template and are used to cover the first openings on the top of the device and / or the second openings of the conveyor belt in rows from outside to inside.
Eine weitere Möglichkeit zur Begrenzung des angelegten Unterdrucks auf die Nutzfläche ist möglich, wenn jede erste Öffnung der mit Unterdruck beaufschlagbaren Vorrichtung beispielsweise mittels eines Schlauches einzeln an die Einrichtung zum Erzeugen des Unterdrucks angeschlossen ist und jeder Schlauch gezielt geöffnet oder geschlossen werden kann. Weitere dem Fachmann bekannte Möglichkeiten zur Begrenzung einer mit Druck zu beaufschlagenden Fläche sollen von der Erfindung ebenfalls umfasst sein.Another way to limit the applied negative pressure on the effective area is possible if each first opening of the device can be acted upon with negative pressure, for example by means of a hose connected individually to the device for generating the negative pressure and each hose can be selectively opened or closed. Further possibilities known to the person skilled in the art for limiting a surface to be pressurized are also to be covered by the invention.
Vorzugsweise ist die Einrichtung zum Anlegen des Unterdrucks mit den Mitteln zur Einstellung der Größe und/oder der Form der Ansaugfläche derart gekoppelt, dass die Unterdruckleistung in Abhängigkeit von der Form und/oder der Größe der Ansaugfläche steuerbar ist. Beispielsweise kann beim Einstellen der oben beschriebenen verstellbaren Wände ein entsprechendes Signal an die Unterdruck erzeugende Einrichtung übermittelt werden, so dass deren Leistung entsprechend angepasst wird und abhängig von der Breite der zu transportierenden Folie mehr oder weniger Unterdruck erzeugt wird.Preferably, the means for applying the negative pressure to the means for adjusting the size and / or the shape of the suction surface is coupled such that the negative pressure performance in dependence on the shape and / or the size of the suction surface is controllable. For example, when setting the adjustable walls described above, a corresponding signal to the vacuum generating device are transmitted, so that their performance is adjusted accordingly and depending on the width of the film to be transported more or less negative pressure is generated.
Weiterhin kann der erzeugte Unterdruck abhängig von den Folienparametern variiert bzw. eingestellt werden. Je nach Dicke, Dichte, Steifigkeit, Größe und/oder Form der Folie ist es technisch sinnvoll mehr oder weniger Unterdruck anzulegen, um einen optimalen Transport der Folie zu erreichen.Furthermore, the generated negative pressure can be varied or adjusted depending on the film parameters. Depending on the thickness, density, stiffness, size and / or shape of the film, it is technically sensible to apply more or less negative pressure in order to achieve optimal transport of the film.
Weitere Merkmale, Ziele und Vorteile der vorliegenden Erfindung gehen aus der nun folgenden detaillierten Beschreibung einer bevorzugten Ausführungsform der Erfindung hervor, die als nicht einschränkendes Beispiel dient und auf die beigefügten Zeichnungen Bezug nimmt. Gleiche Bauteile weisen dabei grundsätzlich gleiche Bezugszeichen auf und werden teilweise nicht mehrfach erläutert.
- Fig. 1a
- zeigt den bekannten Stand der Technik eines herkömmlichen mit Unterdruck beaufschlagten Förderbandes,
- Fig. 1 b
- zeigt die Oberseite eines Förderbandes aus
Fig. 1 gemäß dem Stand der Technik, - Fig. 2
- zeigt die Oberseite einer entlang der Transportrichtung beschränkbaren mit Unterdruck beaufschlagbaren Einrichtung,
- Fig. 3
- zeigt die Oberseite einer in Transportabschnitte unterteilbaren mit Unterdruck beaufschlagbaren Einrichtung und
- Fig. 4
- zeigt die Oberseite einer weiteren Ausführungsform einer entlang der Transportrichtung beschränkbaren mit Unterdruck beaufschlagbaren Einrichtung.
- Fig. 1a
- shows the known prior art of a conventional vacuum applied conveyor belt,
- Fig. 1 b
- shows the top of a conveyor belt
Fig. 1 according to the prior art, - Fig. 2
- shows the upper side of a device which can be restricted under the direction of transport by means of a vacuum,
- Fig. 3
- shows the top of a subdivided into transport sections with negative pressure device and
- Fig. 4
- shows the top of another embodiment of a restrictable along the transport direction with negative pressure device.
Eine mögliche Ausgestaltung einer auf die Nutzfläche eingrenzbaren mit Unterdruck beaufschlagten Einrichtung 20 wird anhand von
Die Erfindung ist nicht auf die vorstehenden Ausführungsbeispiele beschränkt. Vielmehr ist eine Vielzahl von Varianten und Abwandlungen denkbar, die von dem erfindungsgemäßen Gedanken Gebrauch machen und deshalb ebenfalls in den Schutzbereich fallen.A possible embodiment of a limited to the useful surface acted upon by
The invention is not limited to the above embodiments. Rather, a variety of variants and modifications are conceivable that make use of the inventive concept and therefore also fall within the scope.
Claims (9)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008020295A DE102008020295A1 (en) | 2008-04-22 | 2008-04-22 | Device for transporting film |
Publications (1)
Publication Number | Publication Date |
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EP2112108A1 true EP2112108A1 (en) | 2009-10-28 |
Family
ID=40908604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP09155314A Ceased EP2112108A1 (en) | 2008-04-22 | 2009-03-17 | Device for transporting film |
Country Status (2)
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EP (1) | EP2112108A1 (en) |
DE (1) | DE102008020295A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102019104112A1 (en) * | 2019-02-19 | 2020-08-20 | Krones Aktiengesellschaft | Packaging line; Transport device and method for adapting a packaging system |
DE102020131190A1 (en) | 2020-11-25 | 2022-05-25 | Krones Aktiengesellschaft | Transport device, packaging system and method for adapting or retrofitting a transport device |
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FR1376528A (en) * | 1963-06-20 | 1964-10-31 | Saint Gobain Corp | Suction transfer conveyor |
DE1756319A1 (en) * | 1968-05-06 | 1970-08-06 | Trepel Kg Maschinenfabrik | Device for inserting and removing thin panels in or from processing machines |
FR2352742A1 (en) * | 1976-05-28 | 1977-12-23 | Rengo Co Ltd | CONVEYOR FOR FEEDING AND DISCHARGING A STRIP OF CORRUGATED CARDBOARD IN A CUTTING DEVICE |
GB2071063A (en) * | 1980-02-27 | 1981-09-16 | Rochette Cenpa | Suction belt conveyor |
SU927701A1 (en) * | 1980-05-07 | 1982-05-15 | Предприятие П/Я В-2996 | Suction device for conveying flexible sheets |
US4627608A (en) * | 1985-05-01 | 1986-12-09 | Gill Studios, Inc. | Vacuum take-off conveyor |
US5522693A (en) | 1992-03-11 | 1996-06-04 | Andritz-Patentverwaltungs-Gesellschaft M.B.H. | Process and apparatus for stacking sheets, such as plates, leaves and foils |
DE19616714A1 (en) * | 1996-04-26 | 1997-11-06 | Heidelberger Druckmasch Ag | Sheet paper conveyor |
DE29806753U1 (en) * | 1998-04-15 | 1998-10-01 | Spaeth Rudolf | Transport device |
DE29910696U1 (en) * | 1999-06-18 | 1999-08-12 | Roland Man Druckmasch | Pneumatic sheet guide |
EP1693321A1 (en) * | 2005-02-16 | 2006-08-23 | Heidelberger Druckmaschinen AG | Transport device for flat articles |
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US3355166A (en) * | 1965-06-24 | 1967-11-28 | St Regis Paper Co | Automatic wrapping machine including a suction stop plate |
DE4411358B4 (en) * | 1994-03-31 | 2005-10-27 | Focke & Co.(Gmbh & Co. Kg) | Device for producing packaging from in particular thin plastic film |
-
2008
- 2008-04-22 DE DE102008020295A patent/DE102008020295A1/en not_active Withdrawn
-
2009
- 2009-03-17 EP EP09155314A patent/EP2112108A1/en not_active Ceased
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1376528A (en) * | 1963-06-20 | 1964-10-31 | Saint Gobain Corp | Suction transfer conveyor |
DE1756319A1 (en) * | 1968-05-06 | 1970-08-06 | Trepel Kg Maschinenfabrik | Device for inserting and removing thin panels in or from processing machines |
FR2352742A1 (en) * | 1976-05-28 | 1977-12-23 | Rengo Co Ltd | CONVEYOR FOR FEEDING AND DISCHARGING A STRIP OF CORRUGATED CARDBOARD IN A CUTTING DEVICE |
GB2071063A (en) * | 1980-02-27 | 1981-09-16 | Rochette Cenpa | Suction belt conveyor |
SU927701A1 (en) * | 1980-05-07 | 1982-05-15 | Предприятие П/Я В-2996 | Suction device for conveying flexible sheets |
US4627608A (en) * | 1985-05-01 | 1986-12-09 | Gill Studios, Inc. | Vacuum take-off conveyor |
US5522693A (en) | 1992-03-11 | 1996-06-04 | Andritz-Patentverwaltungs-Gesellschaft M.B.H. | Process and apparatus for stacking sheets, such as plates, leaves and foils |
DE19616714A1 (en) * | 1996-04-26 | 1997-11-06 | Heidelberger Druckmasch Ag | Sheet paper conveyor |
DE29806753U1 (en) * | 1998-04-15 | 1998-10-01 | Spaeth Rudolf | Transport device |
DE29910696U1 (en) * | 1999-06-18 | 1999-08-12 | Roland Man Druckmasch | Pneumatic sheet guide |
EP1693321A1 (en) * | 2005-02-16 | 2006-08-23 | Heidelberger Druckmaschinen AG | Transport device for flat articles |
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DE102008020295A1 (en) | 2009-10-29 |
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