EP2269931A2 - Device for spreading a web of film - Google Patents
Device for spreading a web of film Download PDFInfo
- Publication number
- EP2269931A2 EP2269931A2 EP10006235A EP10006235A EP2269931A2 EP 2269931 A2 EP2269931 A2 EP 2269931A2 EP 10006235 A EP10006235 A EP 10006235A EP 10006235 A EP10006235 A EP 10006235A EP 2269931 A2 EP2269931 A2 EP 2269931A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- webs
- spreading
- web
- film web
- 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
Links
- 230000007480 spreading Effects 0.000 title claims description 30
- 238000003892 spreading Methods 0.000 title claims description 30
- 239000011148 porous material Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 14
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 3
- 238000004806 packaging method and process Methods 0.000 claims description 21
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 claims description 2
- 239000011888 foil Substances 0.000 abstract description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 13
- 238000005520 cutting process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 229920006280 packaging film Polymers 0.000 description 3
- 239000012785 packaging film Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
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
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
- B65H23/025—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers
- B65H23/0251—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers with a straight axis
-
- 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
- B65B41/12—Feeding webs from rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/414—Winding
- B65H2301/4148—Winding slitting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/15—Roller assembly, particular roller arrangement
- B65H2404/152—Arrangement of roller on a movable frame
- B65H2404/1521—Arrangement of roller on a movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis
- B65H2404/15212—Arrangement of roller on a movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis rotating, pivoting or oscillating around an axis perpendicular to the roller axis
-
- 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
- B65H2406/10—Means using fluid made only for exhausting gaseous medium
- B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
- B65H2406/113—Details of the part distributing the air cushion
- B65H2406/1131—Porous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/81—Packaging machines
Definitions
- the present invention relates to a device for spreading a split film web and a corresponding method having the features of the preambles of claims 1 and 6.
- Folienspreizens are usually realized in that a divided into two sheets of film is pulled over angularly employed rigid spreader rollers. In order to minimize the friction of the film to the rigid rollers, they are provided in a portion of its circumference with holes from which air flows. This subregion corresponds at least to the wrap angle of the film. As a result, the pressurized air roller forms an air bearing for the film web.
- Alternative variants may provide for dispensing with the airbed and merely guiding and pulling the film over a curved shaft.
- this variant has the disadvantage that the film charges statically and the spread can assume only a small Sp Dahl hindered light, so that a film spacing of typically only about 30 mm can be realized.
- a device for separating material webs into two part webs by longitudinal cutting with subsequent use of a film spreader with deflecting rails for film guidance is, for example, from the DE 42 41 354 C1 known.
- the spreading is carried out by adjustable in their degree of spreading Umlenkschienen, which are formed as acted upon by compressed air hollow sections having a plurality of openings for the exit of the compressed air.
- EP 710 531 B1 shows an apparatus and method for long cutting strip material by means of rotating knives. More particularly, the invention relates to an improved method of cutting webs with razor blades with minimal web spreading and corresponding minimization of defects, the web being guided on an air bearing, which in particular consists of a perforated cylindrical air bearing rod.
- the film cut to a defined length is transported on a so-called vacuum belt in the direction of the film wrapping station. Due to the predetermined mechanism of two separate bands on the transport path from the film separation station to the vacuum belt and the conveyor belt and the film wrapping the film must be transported or pushed over an area in which no support of the film can be guaranteed. To bridge this area and to ensure that the film or the film beginning does not buckle due to gravity and thus causes a production disturbance, the film is stabilized with the help of two blowpipes and transported by means of an air duct formed by the blowpipes in the desired position and orientation.
- DE 37 33 129 A1 shows an apparatus for separating material webs in at least two partial webs.
- the partial webs are guided in each case via adjustable deflecting members, the position of which can be controlled by monitoring members of the material web and of the individual webs.
- DE 42 07 725 C2 describes a device in which a longitudinal cutting device is provided between the film roll and the dancer, which cuts the incoming film web in the middle, after which the two resulting film webs reach the respective packaging station via a film spreading device.
- DE 101 05 486 A1 describes a method and apparatus for making outer wrap packages. This is a double-width film web for education separated individual film webs in the middle. The spreading of the strips of material takes place by means of deflecting rollers arranged at an axial distance from one another.
- DE 100 23 169 A1 discloses a double-acting spreading device, which by means of two arrow-like arranged turning bars, which are firmly connected to each other at an equal obtuse angle, the material web leads apart.
- the uncut web is in this case in the planes of the arrow-shaped turning bars latter and removed.
- DE 10 2004 018 981 A1 discloses a spreader roller for wrinkle-free guiding of films and webs by means of spreading elements, in which by pressing the web spreading elements which are guided in a roll, are easily compressed while doing a movement to the outside.
- An expansion element consists of a contact rail, elastic intermediate webs and a guide rail, wherein the contact rail can be pressurized.
- EP 1 634 831 A1 shows a web spreading method and a web spreading device.
- the spreading method works by means of adjustably arranged cylindrical elements.
- the webs are transported over deflection devices which have blowing air holes on their mantle surfaces in order to reduce the friction.
- U.S. 4,176,775 describes a spreading device for cut webs, wherein the webs are guided over separate, curved Sp Rudstangen and thereby separated from each other. Through an air layer here also the friction is reduced.
- the systems described have the disadvantage that a compressed air system must be available.
- the compressed air stabilization and - promotion of the film sections requires a relatively high compressed air consumption, with a relatively high energy input for the production of compressed air is required.
- the object of the present invention is to provide an easily manageable and reliable functioning, energy-saving spreading and guiding possibility for divided strip and film material in a packaging machine.
- a packaging machine for wrapping containers comprises, inter alia, a packaging station with a wrapping device.
- the packages are often delivered in at least two rows. Accordingly, the packaging material used is needed in at least two webs.
- the present invention relates in particular to devices for spreading film webs in connection with packaging machines, in which containers are wrapped with cut-to-length film webs and then optionally subjected to a shrinking process.
- the packaging material used i. in particular, the film
- the film web must be divided on the one hand in length and spread to the other.
- an apparatus for spreading whereby the device divides a film web divided into at least two webs so that at least two bundles are packed parallel to one another at the same time, i. in particular, can be wrapped.
- the divided into at least two sheets of film web is guided over at least two adjustable body having openings at least in the region of the film guide and can be acted upon with compressed air.
- the bodies are mutually angled. According to a preferred embodiment, the angle is adjustable, so that the degree of spreading is variably adjustable.
- the bodies in the region of the film guide at least partially consist of a finely porous material.
- a finely porous material This is preferably a ceramic material.
- aluminum hydroxide (Al (OH) 3 ) is used as a finely porous material.
- the finely porous material has microstructures, for example, it has a pore diameter between 5-10 microns.
- the invention is not intended to be limited to the described material, but includes all comparable materials with air-permeable microstructures.
- the guide bodies are cylindrical hollow bodies whose surface consists partly or completely of the finely porous material.
- the bodies have a curved surface only in the region of the film guide and consist of the described finely porous material, while other materials or surface structures can be used on the opposite side or surface, which has no contact with the film web. These sides or surfaces must not be acted upon with compressed air, i. especially not permeable to air.
- the invention relates to a method for separating and guiding a divided into at least two webs film web by means of a device in which the film web described is guided over at least two mutually adjustable with compressed air acted upon body.
- the film web is distanced from the bodies via a multiplicity of fine-pored openings acted upon by compressed air. This is possible due to the above-described microstructure of the body in the region of the film guide.
- the microstructure may be limited to the region of the film guide or to a partial region of the film guide or may comprise the entire body.
- the invention is based on the use of a special expression of an air bearing system. It is based on a flat, finely porous air bearing unit, which can be configured for example as a cylindrical element. If compressed air is applied to the element, an air leak occurs. Due to the fine-porous structure, this air outlet in the area of the finely porous structure is flat and homogeneous. Compared to the known systems, in which an air bearing is generated, for example, by compressed air acted upon cylindrical elements with drilled holes, the air consumption can be reduced. At the same time, this leads to lower energy consumption.
- the invention can be used in particular in a packaging machine for handling the packaging films in the functional areas of spreading the film.
- the air-assisted, angularly adjustable and fixed Spreizumlenkungen be replaced by a suitably assembled air bearings.
- the fine-pored surface-area air film causes the film to be pulled almost without contact over the spreader rollers and is spread by their angular position.
- the main advantage of the system over the systems described in the prior art is the massive reduction in air and energy consumption.
- FIG. 1 shows a packaging machine 10.
- This comprises a guide system 20 for feeding film webs 22 to pre-grouped containers 30.
- the film webs 22 are in particular cut to length and / or longitudinally in two or more parallel and spaced guided film webs 22.
- the film is provided by the meter on a film drum 24.
- the guide system 20 may in particular be designed as a dancer, in which the required length of film is temporarily stored.
- the bundles 30 to be formed by means of the film webs 22 consist of at least two rows of combined bodies and are conveyed on a horizontally arranged conveyor 40, in particular a conveyor belt, to the packaging station 12.
- the containers 30 are wrapped and wrapped at the packaging station 12 by means of a wrapping device 14 with suitably cut to length film webs 22.
- the wrapped containers 30 can be supplied, for example, to a shrink tunnel (not shown), in order to subject them to a shrinkage process by means of heat.
- the foil webs 22 are pulled off a film drum 24 prior to spreading and cut into suitable sections by means of a cutting device 42, so that an endless feed can be ensured over a relatively long period of time.
- a further film drum 26 can be activated, which is preferably already ready for stock in the packaging machine 10.
- the state of the film drum 24 is monitored by means of a detection system and a signal is sent in good time to a control device which initiates the provision of a new film drum 26 in the way.
- the marked detail area 60 will be described below with reference to FIG. 2 explained in more detail.
- FIG. 2 shows in detail the film deflection and spreading by means of a deflection and spreading 60 of the packaging machine 10 from Fig. 1 ,
- the film web 22 is over the deflection and spreading 60 several times - in the embodiment shown twice - redirected.
- the deflecting and spreading devices 60 shown in the illustrated embodiment consists of two pairs of rollers 621 and 622, the in FIG. 3 be shown in more detail.
- FIG. 3 shows a pair of rollers 621 and 622. These are two angularly adjustable rollers 62.
- the rollers 62 are, for example, cylindrical hollow body of a finely porous material with micro-openings.
- the finely porous material consists for example of ceramic with a pore cross section between 5 to 10 .mu.m.
- the air outlet is different than hollow bodies, in which holes have been introduced by means of a drill. Due to the microstructure of the material used, less air is required for an equivalent air film or for the same air bearing effect than when using conventional air openings.
- the hollow body of a granular material consisting of aluminum hydroxide Al (OH) 3 can be prepared, which also has a microporous structure which is permeable to air.
- Al (OH) 3 aluminum hydroxide
- the spreading of the web cut in length takes place in the embodiment shown by means of two roller pairs 621 and 622.
- the film web 22 is fed from the film roll 24 and cut in the longitudinal direction.
- the two resulting narrower film webs 22 are guided over a first pair of rollers 621. Since the rollers 62 in the roller pair 621 is arranged at an angle to one another, this causes the two webs 22 to spread apart.
- the film webs 22 are then guided vertically upwards to form a second pair of rollers 622, in which the rollers 62 are preferably arranged at an angle to one another, so that - If this is desired for further processing - further spreading is possible.
- this distance can be varied accordingly.
- an air cushion is advantageous, in particular an air and energy-saving air cushion, which can be produced by means of the above-described microstructure.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Basic Packing Technique (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zum Aufspreizen einer geteilten Folienbahn sowie ein entsprechendes Verfahren mit den Merkmalen der Oberbegriffe der Ansprüche 1 und 6.The present invention relates to a device for spreading a split film web and a corresponding method having the features of the preambles of claims 1 and 6.
In der Verpackungsindustrie werden bei der (Um)-Verpackung von Gebinden diese häufig mehrspurig durch eine entsprechende Verpackungsmaschine befördert. Insbesondere werden in einem Einschlagvorgang parallel mindestens zwei Gebinde gleichzeitig von Verpackungsfolie zumindest teilweise umhüllt. Hierzu ist es notwendig, die meist einbahnig vorliegende verwendete Verpackungsfolie in mindestens zwei Bahnen mittels einer Schneid- und nachfolgenden Spreizvorrichtung zu trennen. Die bereitgestellte breite Folienbahn wird somit in mindestens zwei Hälften getrennt und diese Hälften auf einen ausreichenden Abstand gebracht, um ohne gegenseitige Störung zwei parallel nebeneinander beförderte Gebinde einschlagen zu können.In the packaging industry, in the (re) packaging of containers they are often transported in multiple lanes through a corresponding packaging machine. In particular, in a wrapping process, at least two containers are at the same time at least partially enveloped by packaging film at the same time. For this purpose, it is necessary to separate the most single-lane used packaging film used in at least two tracks by means of a cutting and subsequent spreading device. The provided wide film web is thus separated into at least two halves and these halves are brought to a sufficient distance in order to strike without mutual interference two parallel juxtaposed containers can.
Gegenwärtig wird die Funktion des Folienspreizens meist dadurch realisiert, dass eine in zwei Bahnen geteilte Folie über winklig angestellte starre Spreizrollen gezogen wird. Um die Reibung der Folie an den starren Rollen zu minimieren, sind diese in einem Teilbereich ihres Umfangs mit Bohrungen versehen, aus denen Luft strömt. Dieser Teilbereich entspricht zumindest dem Umschlingungswinkel der Folie. Hierdurch bildet die mit Druckluft beaufschlagte Rolle ein Luftlager für die Folienbahn.Currently, the function of Folienspreizens is usually realized in that a divided into two sheets of film is pulled over angularly employed rigid spreader rollers. In order to minimize the friction of the film to the rigid rollers, they are provided in a portion of its circumference with holes from which air flows. This subregion corresponds at least to the wrap angle of the film. As a result, the pressurized air roller forms an air bearing for the film web.
Alternative Varianten können vorsehen, auf das Luftbett zu verzichten und die Folie lediglich über eine gekrümmte Welle zu führen und zu ziehen. Diese Variante hat jedoch den Nachteil, dass sich die Folie statisch auflädt und die Spreizung nur ein geringes Spreizmaß annehmen kann, so dass damit ein Folienabstand von typischerweise nur ca. 30 mm zu realisieren ist.Alternative variants may provide for dispensing with the airbed and merely guiding and pulling the film over a curved shaft. However, this variant has the disadvantage that the film charges statically and the spread can assume only a small Spreizmaß, so that a film spacing of typically only about 30 mm can be realized.
Eine Vorrichtung zum Trennen von Materialbahnen in zwei Teilbahnen durch Längsschneiden unter anschließender Verwendung eines Folienspreizers mit Umlenkschienen zur Folienführung ist bspw. aus der
Grundsätzlich haben die beschriebenen Systeme den Nachteil, dass ein Druckluftsystem zur Verfügung stehen muss. Zudem bedingt die Druckluftstabilisierung und - förderung der Folienabschnitte einen relativ hohen Druckluftverbrauch, wobei ein relativ hoher Energieeinsatz für die Herstellung der Druckluft erforderlich ist.Basically, the systems described have the disadvantage that a compressed air system must be available. In addition, the compressed air stabilization and - promotion of the film sections requires a relatively high compressed air consumption, with a relatively high energy input for the production of compressed air is required.
Die Aufgabe der vorliegenden Erfindung besteht darin, eine leicht handhabbare und zuverlässig funktionierende, energiesparende Spreiz- und Führungsmöglichkeit für geteiltes Band- und Folienmaterial in einer Verpackungsmaschine zu schaffen.The object of the present invention is to provide an easily manageable and reliable functioning, energy-saving spreading and guiding possibility for divided strip and film material in a packaging machine.
Eine Verpackungsmaschine zur Umhüllung von Gebinden umfasst unter anderem eine Verpackungsstation mit einer Einschlagvorrichtung. In einer solchen Verpackungsstation werden die Gebinde häufig in wenigstens zwei Reihen angeliefert. Dementsprechend wird das verwendete Verpackungsmaterial in wenigstens zwei Bahnen benötigt. Die vorliegende Erfindung bezieht sich insbesondere auf Vorrichtungen zum Aufspreizen von Folienbahnen in Verbindung mit Verpackungsmaschinen, bei denen Gebinde mit abgelängten Folienbahnen umhüllt werden und anschließend gegebenenfalls einem Schrumpfprozess unterzogen werden.A packaging machine for wrapping containers comprises, inter alia, a packaging station with a wrapping device. In such a packaging station, the packages are often delivered in at least two rows. Accordingly, the packaging material used is needed in at least two webs. The present invention relates in particular to devices for spreading film webs in connection with packaging machines, in which containers are wrapped with cut-to-length film webs and then optionally subjected to a shrinking process.
Das verwendete Verpackungsmaterial, d.h. insbesondere die Folie, liegt meist einbahnig auf einer Rolle vor. Zur Verwendung der Folie zur Verpackung der Gebinde muss die Folienbahn zum einen in der Länge geteilt und zum anderen aufgespreizt werden.The packaging material used, i. in particular, the film, is usually one-lane on a roll before. To use the film for packaging the container, the film web must be divided on the one hand in length and spread to the other.
Die oben genannte Aufgabe wird durch eine Vorrichtung zum Aufspreizen gelöst, wobei durch die Vorrichtung eine in mindestens zwei Bahnen geteilte Folienbahn so auseinander geführt wird, dass gleichzeitig mindestens zwei Gebinde parallel nebeneinander verpackt, d.h. insbesondere umhüllt, werden können. Die in mindestens zwei Bahnen geteilte Folienbahn wird dabei über mindestens zwei verstellbare Körper geführt, die wenigstens im Bereich der Folienführung Öffnungen aufweisen und mit Druckluft beaufschlagbar sind. Vorzugsweise sind die Körper zueinander winklig anstellbar. Gemäß einer bevorzugten Ausführungsform ist der Winkel einstellbar, so dass der Grad der Aufspreizung variabel einstellbar ist.The above-mentioned object is achieved by an apparatus for spreading, whereby the device divides a film web divided into at least two webs so that at least two bundles are packed parallel to one another at the same time, i. in particular, can be wrapped. The divided into at least two sheets of film web is guided over at least two adjustable body having openings at least in the region of the film guide and can be acted upon with compressed air. Preferably, the bodies are mutually angled. According to a preferred embodiment, the angle is adjustable, so that the degree of spreading is variably adjustable.
Erfindungsgemäß bestehend die Körper im Bereich der Folienführung zumindest teilweise aus einem feinporösen Material. Dabei handelt es sich vorzugsweise um einen keramischen Werkstoff. Gemäß einer bevorzugten Ausführungsform findet als feinporöses Material Aluminiumhydroxid (Al(OH)3) Verwendung.According to the invention, the bodies in the region of the film guide at least partially consist of a finely porous material. This is preferably a ceramic material. According to a preferred embodiment, aluminum hydroxide (Al (OH) 3 ) is used as a finely porous material.
Das feinporöse Material weist Mikrostrukturen auf, beispielsweise weist es einen Porendurchmesser zwischen 5-10 µm auf. Die Erfindung soll nicht auf das beschriebene Material beschränkt werden, sondern alle vergleichbaren Materialien mit luftdurchlässigen Mikrostrukturen umfassen.The finely porous material has microstructures, for example, it has a pore diameter between 5-10 microns. The invention is not intended to be limited to the described material, but includes all comparable materials with air-permeable microstructures.
Gemäß einer bevorzugten Ausführungsform sind die Führungskörper zylindrische Hohlkörper, deren Oberfläche teilweise oder vollständig aus dem feinporöses Material besteht. Gemäß einer weiteren Ausführungsform weisen die Körper nur im Bereich der Folienführung eine gekrümmte Oberfläche auf und bestehen aus dem beschriebenen feinporösen Material, während auf der entgegengesetzten Seite bzw. Fläche, die keinen Kontakt mit der Folienbahn hat, andere Materialien bzw. Oberflächenstrukturen verwendet werden können. Diese Seiten bzw. Flächen müssen auch nicht mit Druckluft beaufschlagbar, d.h. insbesondere nicht luftdurchlässig, sein.According to a preferred embodiment, the guide bodies are cylindrical hollow bodies whose surface consists partly or completely of the finely porous material. According to a further embodiment, the bodies have a curved surface only in the region of the film guide and consist of the described finely porous material, while other materials or surface structures can be used on the opposite side or surface, which has no contact with the film web. These sides or surfaces must not be acted upon with compressed air, i. especially not permeable to air.
Weiterhin bezieht sich die Erfindung auf ein Verfahren zum Auftrennen und Führen einer in mindestens zwei Bahnen geteilten Folienbahn mittels einer Vorrichtung, bei der die beschriebene Folienbahn über mindestens zwei gegeneinander verstellbare mit Druckluft beaufschlagbare Körper geführt ist. Erfindungsgemäß wird die Folienbahn über eine Vielzahl feinporiger mit Druckluft beaufschlagter Öffnungen von den Körpern distanziert. Dies ist aufgrund der oben beschriebenen Mikrostruktur der Körper im Bereich der Folienführung möglich. Die Mikrostruktur kann auf den Bereich der Folienführung oder auf einen Teilbereich der Folienführung beschränkt sein oder aber die gesamten Körper umfassen.Furthermore, the invention relates to a method for separating and guiding a divided into at least two webs film web by means of a device in which the film web described is guided over at least two mutually adjustable with compressed air acted upon body. According to the invention, the film web is distanced from the bodies via a multiplicity of fine-pored openings acted upon by compressed air. This is possible due to the above-described microstructure of the body in the region of the film guide. The microstructure may be limited to the region of the film guide or to a partial region of the film guide or may comprise the entire body.
Die Erfindung basiert auf den Einsatz einer speziellen Ausprägung eines Luftlagersystems. Zugrunde gelegt wird eine flächige, feinporöse Luftlagereinheit, die beispielsweise als zylindrisches Element ausgestaltet sein kann. Wird das Element mit Druckluft beaufschlagt, entsteht ein Luftaustritt. Durch die feinporöse Struktur ist dieser Luftaustritt im Bereich der feinporösen Struktur flächig und homogen. Im Vergleich zu den bekannten Systemen, bei der ein Luftlager beispielsweise durch mit Druckluft beaufschlagten zylinderförmigen Elementen mit Bohrlöchern erzeugt wird, kann der Luftverbrauch gesenkt werden. Dies führt gleichzeitig zu einem geringeren Energieverbrauch.The invention is based on the use of a special expression of an air bearing system. It is based on a flat, finely porous air bearing unit, which can be configured for example as a cylindrical element. If compressed air is applied to the element, an air leak occurs. Due to the fine-porous structure, this air outlet in the area of the finely porous structure is flat and homogeneous. Compared to the known systems, in which an air bearing is generated, for example, by compressed air acted upon cylindrical elements with drilled holes, the air consumption can be reduced. At the same time, this leads to lower energy consumption.
Die Erfindung kann insbesondere bei einer Verpackungsmaschine zum Handling der Verpackungsfolien in den Funktionsbereichen des Spreizens der Folie eingesetzt werden.The invention can be used in particular in a packaging machine for handling the packaging films in the functional areas of spreading the film.
Im beschriebenen Anwendungsfall werden die luftunterstützten, winklig anstellbaren und feststehenden Spreizumlenkungen durch ein entsprechend konfektioniertes Luftlager ersetzt. Der feinporig ausströmende flächige Luftfilm bewirkt, dass die Folie nahezu berührungsfrei über die Spreizrollen gezogen wird und durch deren winklige Stellung gespreizt wird.In the described application, the air-assisted, angularly adjustable and fixed Spreizumlenkungen be replaced by a suitably assembled air bearings. The fine-pored surface-area air film causes the film to be pulled almost without contact over the spreader rollers and is spread by their angular position.
Der wesentliche Vorteil des Systems gegenüber den im Stand der Technik beschriebenen Systemen besteht in der massiven Reduzierung des Luft- und Energieverbrauchs.The main advantage of the system over the systems described in the prior art is the massive reduction in air and energy consumption.
Im Folgenden sollen Ausführungsbeispiele die Erfindung und ihre Vorteile anhand der beigefügten Figuren näher erläutern. Die Größenverhältnisse der einzelnen Elemente zueinander in den Figuren entsprechend nicht immer den realen Größenverhältnissen, da einige Formen vereinfacht und andere Formen zur besseren Veranschaulichung vergrößert im Verhältnis zu anderen Elementen dargestellt sind.
- Fig. 1
- zeigt eine schematische Darstellung mit wesentlichen Funktionselemen- ten einer Verpackungsmaschine;
- Fig. 2
- zeigt eine schematische Seitenansicht einer Folienumlenkung und - spreizung der Verpackungsmaschine gemäß
Fig. 1 und - Fig. 3
- zeigt eine schematische Darstellung der verstellbaren mit Druckluft beaufschlagbaren Körper.
- Fig. 1
- shows a schematic representation with essential functional elements of a packaging machine;
- Fig. 2
- shows a schematic side view of a film deflection and - spreading of the packaging machine according to
Fig. 1 and - Fig. 3
- shows a schematic representation of the adjustable acted upon with compressed air body.
Für gleiche oder gleich wirkende Elemente der Erfindung werden identische Bezugszeichen verwendet. Ferner werden der Übersicht halber nur Bezugszeichen in den einzelnen Figuren dargestellt, die für die Beschreibung der jeweiligen Figur erforderlich sind. Die dargestellten Ausführungsformen stellen lediglich Beispiele dar, wie die erfindungsgemäße Vorrichtung oder das erfindungsgemäße Verfahren ausgestaltet sein können und stellen keine abschließende Begrenzung dar.For identical or equivalent elements of the invention, identical reference numerals are used. Furthermore, for the sake of clarity, only reference symbols are shown in the individual figures, which are required for the description of the respective figure. The illustrated embodiments are merely examples of how the device or method of the invention may be configured and are not an exhaustive limitation.
Die mittels der Folienbahnen 22 zu umfassenden Gebinde 30 bestehen aus wenigsten zwei Reihen von zusammengefassten Körpern und werden auf einem horizontal angeordneten Förderer 40, insbesondere einem Transportband, zur Verpackungsstation 12 befördert. Die Gebinde 30 werden an der Verpackungsstation 12 mittels einer Einschlageinrichtung 14 mit passend abgelängten Folienbahnen 22 eingeschlagen und umhüllt. Anschließend können die umhüllten Gebinde 30 beispielsweise einem Schrumpftunnel zugeführt werden (nicht dargestellt), um sie mittels Wärmeeinwirkung einem Schrumpfungsprozess zu unterziehen.The
Die Folienbahnen 22 werden im gezeigten Ausführungsbeispiel vor dem Spreizen von einer Folientrommel 24 abgezogen und mittels einer Schneidvorrichtung 42 in passende Abschnitte abgelängt, so dass über einen längeren Zeitraum eine Endloszuführung gewährleistet werden kann. Bevor die Folientrommel 24 vollständig abgerollt ist, kann eine weitere Folientrommel 26 aktiviert werden, die vorzugsweise in der Verpackungsmaschine 10 bereits auf Vorrat bereit steht. Weiterhin ist denkbar, dass der Zustand der Folientrommel 24 mittels eines Detektionssystems überwacht wird und rechtszeitig ein Signal an eine Steuereinrichtung übermittelt wird, die die Bereitstellung einer neuen Folientrommel 26 in die Wege leitet.In the embodiment shown, the
Der gekennzeichnete Detailbereich 60 wird nachfolgend anhand der
Die schematische Seitenansicht der
Weiterhin kann der Hohlkörper aus einem Granulatmaterial bestehend aus Aluminiumhydroxid Al(OH)3 hergestellt werden, dass ebenfalls eine mikroporöse Struktur aufweist, die für Luft durchlässig ist. Die Verwendung anderer Materialien mit vergleichbaren Eigenschaften soll ebenfalls von der Erfindung umfasst sein.Furthermore, the hollow body of a granular material consisting of aluminum hydroxide Al (OH) 3 can be prepared, which also has a microporous structure which is permeable to air. The use of other materials with comparable properties should also be included in the invention.
Die Aufspreizung der in der Länge geschnittenen Bahn erfolgt im gezeigten Ausführungsbeispiel mittels zweier Rollenpaare 621 und 622. Die Folienbahn 22 wird von der Folienrolle 24 zugeführt und in Längsrichtung geschnitten. Die beiden dadurch entstandenen schmaleren Folienbahnen 22 werden über ein erstes Rollenpaar 621 geführt. Da die Rollen 62 im Rollenpaar 621 winklig zueinander angeordnet ist, bewirkt dies ein Auseinanderspreizen der beiden Bahnen 22. Anschließend werden die Folienbahnen 22 senkrecht nach oben zu einem zweiten Rollenpaar 622 geführt, bei dem die Rollen 62 vorzugsweise wiederum winklig zueinander angeordnet sind, so dass - wenn dies für die weitere Verarbeitung gewünscht wird - eine weitere Aufspreizung möglich ist.The spreading of the web cut in length takes place in the embodiment shown by means of two roller pairs 621 and 622. The
Auf diese Art und Weise lässt sich einfach der für die nachfolgende Verpackungsstation benötigte Abstand der Teilbahnen 22 herstellen. Abhängig von dem Winkel, den die Rollen 62 im ersten Rollenpaar 621 und / oder im zweiten Rollenpaar 622 einnehmen, kann dieser Abstand entsprechend variiert werden.In this way, it is easy to produce the spacing of the
Um starke Kräfte an den Folienbahnen 22 zu vermeiden, die zu einem Verziehen der Bahnen 22 führen könnten und somit den nachfolgenden Verpackungsprozess behindern könnten, ist es vorteilhaft, die Reibung zwischen den Rollen 62 und den Bahnen 22 zu minimieren. Aus diesem Grund ist ein Luftpolster vorteilhaft, insbesondere ein luft- und energiesparendes Luftpolster, was mithilfe der oben beschriebenen Mikrostruktur hergestellt werden kann.In order to avoid strong forces on the
Die Erfindung wurde unter Bezugnahme auf bevorzugte Ausführungsformen beschrieben. Es ist jedoch für einen Fachmann vorstellbar, dass Abwandlungen oder Änderungen der Erfindung gemacht werden können, ohne dabei den Schutzbereich der nachstehenden Ansprüche zu verlassen.The invention has been described with reference to preferred embodiments. However, it will be apparent to those skilled in the art that modifications or changes may be made to the invention without departing from the scope of the following claims.
- 1010
- Verpackungsmaschinepackaging machine
- 1212
- Verpackungsstationpacking station
- 1414
- Einschlageinrichtungwrapping device
- 2020
- Führungssystemguidance system
- 2222
- Folienbahnsheet
- 2424
- Folientrommelfilm drum
- 2626
- Folientrommelfilm drum
- 3030
- Gebindecontainer
- 4040
- Fördererpromoter
- 4242
- Schneidvorrichtungcutter
- 6060
- Umlenk- und SpreizvorrichtungDeflection and spreading device
- 6262
- Rollerole
- 621621
- Rollenpaarroller pair
- 622622
- Rollenpaarroller pair
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009026059.5A DE102009026059B4 (en) | 2009-06-29 | 2009-06-29 | Device for spreading a film web |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2269931A2 true EP2269931A2 (en) | 2011-01-05 |
EP2269931A3 EP2269931A3 (en) | 2011-08-24 |
EP2269931B1 EP2269931B1 (en) | 2013-08-14 |
Family
ID=42727450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10006235.5A Active EP2269931B1 (en) | 2009-06-29 | 2010-06-16 | Device for spreading a web of film |
Country Status (4)
Country | Link |
---|---|
US (1) | US20100327036A1 (en) |
EP (1) | EP2269931B1 (en) |
CN (1) | CN101934867B (en) |
DE (1) | DE102009026059B4 (en) |
Cited By (1)
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---|---|---|---|---|
DE102014106906A1 (en) | 2013-06-18 | 2014-12-18 | Khs Gmbh | Apparatus and method for forming packaging units |
Families Citing this family (4)
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---|---|---|---|---|
DE102009026059B4 (en) | 2009-06-29 | 2024-02-01 | Krones Aktiengesellschaft | Device for spreading a film web |
DE102012009648A1 (en) * | 2012-05-14 | 2013-11-14 | Weber Maschinenbau Gmbh Breidenbach | spreading |
DE102015205984A1 (en) | 2015-04-02 | 2016-10-06 | Krones Aktiengesellschaft | Method and guide system for the transport of containers or container components in industrial plants for container production and / or product filling |
CN107054745B (en) * | 2017-04-10 | 2023-02-21 | 成都三可实业有限公司 | Paper feeding device of chewing gum strip-shaped packaging machine |
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Also Published As
Publication number | Publication date |
---|---|
CN101934867A (en) | 2011-01-05 |
US20100327036A1 (en) | 2010-12-30 |
EP2269931A3 (en) | 2011-08-24 |
CN101934867B (en) | 2012-12-12 |
DE102009026059B4 (en) | 2024-02-01 |
DE102009026059A1 (en) | 2010-12-30 |
EP2269931B1 (en) | 2013-08-14 |
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