EP2133274B1 - Packaging machine with a pressure roller device - Google Patents

Packaging machine with a pressure roller device Download PDF

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Publication number
EP2133274B1
EP2133274B1 EP09161219A EP09161219A EP2133274B1 EP 2133274 B1 EP2133274 B1 EP 2133274B1 EP 09161219 A EP09161219 A EP 09161219A EP 09161219 A EP09161219 A EP 09161219A EP 2133274 B1 EP2133274 B1 EP 2133274B1
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EP
European Patent Office
Prior art keywords
tension spring
packaging machine
pressure roller
machine according
roller
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.)
Not-in-force
Application number
EP09161219A
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German (de)
French (fr)
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EP2133274A1 (en
Inventor
Lars Ickert
Stefan Bieringer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Multivac Sepp Haggenmueller GmbH and Co KG
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Multivac Sepp Haggenmueller GmbH and Co KG
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Publication of EP2133274A1 publication Critical patent/EP2133274A1/en
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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
    • B65B41/12—Feeding webs from rolls
    • B65B41/16—Feeding webs from rolls by rollers
    • 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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/025—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers
    • B65B31/028—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers closed by a lid sealed to the upper rim of the container, e.g. tray-like container
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material

Definitions

  • the present invention relates to a packaging machine with a pressure roller device, in particular to a tray sealing machine or a thermoforming machine.
  • film feed systems which are intended to drive a film safely and in a defined manner and in which a driven rubber roller or a rubberized drum motor is used to transport the film around which the film is wound.
  • the necessary frictional force is generated by an additional pressure roller, which is pressed either via a folding mechanism and two coil springs or a pneumatic cylinder to the drive roller.
  • the shows US 3,555,768 a packaging machine in which a pressure roller for pressing a top film to a drive roller is biased by a coil spring in the direction of the drive roller.
  • the US 3,013,740 describes a part of a machine for wrapping cigars in cellophane, in which a steel leaf spring presses a pressure roller against the drive roller.
  • the object of the present invention is therefore to provide a safe, cost-effective and hygienic device, which also solves the above-mentioned disadvantages of problematic jamming and the high space requirement of the system.
  • the pressure roller device according to the invention is easy to clean due to its simple, space-saving construction, since there are no hard-to-reach gaps or the like, and moreover, there are no difficult-to-clean parts, such as e.g. Spiral springs, to be used.
  • the tension spring according to the invention simultaneously fulfills the function of guiding the pressure roller and the suspension or damping thereof. Due to this simple and thus cost-effective construction no jamming or squeaking occurs.
  • films with different film thicknesses can be used without having to change anything in the construction.
  • Fig. 1 to Fig. 3b a first embodiment of the invention by way of example on a tray sealing machine, also called Traysealer described.
  • Fig. 1 shows a Traysealer 1 with a feed belt 2, one or more workstations 3, eg an evacuating, sealing and cutting station, a discharge belt 4, a machine frame 5, a film tensioning device 600, an operating device 30, a film feed roller 32 and a Folienrestaufwickler 31st
  • cup-shaped packages are transported into or out of the work station 3 during operation.
  • the packages are eg evacuated, fumigated, sealed and cut.
  • a foil 10 (see Fig. 3a, b ) is fed through the film feed roller 32, passed through the film tensioning device 600 and the film residue finally wound on the Folienrestaufwickler 31.
  • Fig. 2 shows the Traysealer 1 in a schematic side view.
  • a pressure roller device 60 is provided, which will be described in detail below.
  • Fig. 3a shows the Andschreibrollenvorraum 60 with a drive roller 8, a pressure roller 11 and the film flow of the film 10, and a tension spring 6 in an open position in a schematic side view.
  • the tension spring 6 has the shape of a thin, curved, substantially semicircular or U-shaped metal sheet.
  • the pressure roller 11 is mounted.
  • a handle 12 is additionally provided.
  • a stop 7 and also a bolt 9 is provided, via which the tension spring 6 is pivotally connected to a connecting plate 13.
  • the connecting plate 13 is in turn firmly connected via a fastening element 14 and a roller mounting 16 with a roller carrier 15 for the drive roller 8.
  • the tension spring 6 thus connects the drive roller 8 to the pressure roller 11, wherein the drive roller 8 and the pressure roller 11 are respectively arranged at the free ends of the semicircular tension spring 6.
  • the tension spring 6 is pivotable about the pin 9.
  • the drive roller 8 is connected via the roller attachment 16 rotatably connected to the roller carrier 15 and the connecting plate 13.
  • the film 10 extends in this position, the tension spring 6 unguided or unclamped between the drive roller 8 and the pressure roller 11.
  • the drive roller 8, the pressure roller 11, the handle 12, and the film 10 extend into the plane.
  • the other side of the Andrückrollenvoretti 60 not shown in this view is carried out analogously to the above-described page.
  • the pressure roller device 60 has a total of two tension springs 6 (see. Fig. 5 ). In order to ensure the elasticity of the tension spring 6, it is made of an elastic material such as steel or titanium.
  • Fig. 3b shows the same structure as in Fig. 3a , wherein the tension spring 6 is here in a locked position.
  • the Slide 10 is clamped between the drive roller 8 and the pressure roller 11 and guided by the rotatability of the two rollers 8, 11 defined.
  • the stopper 7 abuts in the locked position on the connecting plate 13 and thus forms an end position of the pivoting.
  • the stopper 7 is adjustable in position, for example by a (not shown) eccentric bolt.
  • the cross-sectional related smallest distance from the pivot point or pin 9 of the tension spring 6 to the outer surface of the pressure roller 11 is less than the cross-sectional largest distance from the pin 9 of the tension spring 6 to the outer surface of the drive roller 8.
  • Fig. 4 shows the tension spring 6 'according to a second embodiment in a schematic side view.
  • the tension spring 6 'in this second embodiment an integrally formed Spannfederquerstrebe 21, which ends with a substantially circular portion or a fitting element 22.
  • a pin bore 17 which cooperates with the bolt 9 for the storage of the tension spring 6, a handle bore 18 for the storage of the handle 12 and a drive roller bore 19 for the storage of the drive roller 9 (see Fig. 5 ) intended.
  • a substantially circular recess 20 is provided, which cooperates with the fitting element 22 in operation. In this way it is prevented that the tension spring 6 'plastically expands beyond its yield point. Such a plastic deformation would have the consequence that the secure function of the clamping of the pressure roller 11 (see Fig. 5 ) would no longer be guaranteed.
  • a corresponding thickness of the tension spring plate ensures that the fitting element 22 does not jump laterally out of the recess 20 under load.
  • Fig. 5 shows the Andschreibrollenvoruze 60 with two tension springs 6 'after the in Fig. 4 described second embodiment.
  • the drive roller 8 is supported by a double-sided drive roller mount 25, which is designed like a bicycle fork.
  • the drive roller receptacle 25 is part of a drive roller carrier 24.
  • the two drive roller carrier 24 are connected by a transverse strut 23 to the necessary stability of Systems and also have carrier fasteners 26 for attaching the Andschreibrollenvortechnisch 60 auf.
  • the film 10 extends between the two tension springs 6 '.
  • the tension spring is not limited to the described embodiment. A variety of embodiments and materials used is conceivable. For example, the sheets used can also be made of plastic.
  • the invention is further not limited to use in a tray sealer. Rather, it is also applicable to a thermoforming machine or a chamber belt machine.

Abstract

The packaging machine has a pressure roller unit (60) with a drive roller (8), which is stored in a drive roller retainer (25). A pressure roll (11) and a tension spring are provided, in which the tension spring is connected with the drive roller retainer in an articulated manner. A foil is guided between the drive roller and the pressure roll.

Description

Die vorliegende Erfindung bezieht sich auf eine Verpackungsmaschine mit einer Andrückrollenvorrichtung, insbesondere auf eine Schalenverschließmaschine oder eine Tiefziehmaschine.The present invention relates to a packaging machine with a pressure roller device, in particular to a tray sealing machine or a thermoforming machine.

Im Bereich der Verpackungsmaschinen sind Folienvorschubsysteme bekannt, die eine Folie sicher und definiert antreiben sollen und in denen für den Transport der Folie eine angetriebene Gummiwalze bzw. ein gummierter Trommelmotor verwendet wird, um die/den die Folie herum geschlungen wird. Die notwendige Reibkraft wird durch eine zusätzliche Andrückrolle erzeugt, die entweder über einen Klappmechanismus und zwei Spiralfedern oder über einen Pneumatikzylinder an die Antriebswalze gedrückt wird. Beispielsweise zeigt die US 3,555,768 eine Verpackungsmaschine, bei der eine Druckrolle zum Anpressen einer Oberfolie an eine Antriebsrolle mittels einer Schraubenfeder in Richtung der Antriebsrolle vorgespannt ist. Die US 3,013,740 beschreibt einen Teil einer Maschine zum Einhüllen von Zigarren in Cellophan, bei der eine Blattfeder aus Stahl eine Druckrolle gegen die Antriebsrolle drückt.In the field of packaging machines, film feed systems are known which are intended to drive a film safely and in a defined manner and in which a driven rubber roller or a rubberized drum motor is used to transport the film around which the film is wound. The necessary frictional force is generated by an additional pressure roller, which is pressed either via a folding mechanism and two coil springs or a pneumatic cylinder to the drive roller. For example, the shows US 3,555,768 a packaging machine in which a pressure roller for pressing a top film to a drive roller is biased by a coil spring in the direction of the drive roller. The US 3,013,740 describes a part of a machine for wrapping cigars in cellophane, in which a steel leaf spring presses a pressure roller against the drive roller.

Diese aufwändigen und teuren Systeme sind aufgrund der Führungen bzw. der Federn hygienetechnisch problematisch und haben einen hohen Platzbedarf. Sie neigen außerdem zum Verklemmen bzw. zum Quietschen und bergen darüber hinaus ein gewisses Sicherheitsrisiko durch Quetschgefahr der Finger.These elaborate and expensive systems are hygienically problematic due to the guides or the springs and have a lot of space. They also tend to jamming or squeaking and also entail a certain safety risk of crushing fingers.

Die Aufgabe der vorliegenden Erfindung ist es daher, eine sichere, kostengünstige und hygienegerechte Vorrichtung bereitzustellen, die zudem die oben genannten Nachteile der problematischen Verklemmung und des hohen Platzbedarfs des Systems löst.The object of the present invention is therefore to provide a safe, cost-effective and hygienic device, which also solves the above-mentioned disadvantages of problematic jamming and the high space requirement of the system.

Die Aufgabe wird gelöst durch eine Verpackungsmaschine mit einer Andrückrollenvorrichtung gemäß Anspruch 1. Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.The object is achieved by a packaging machine with a pressure roller device according to claim 1. Further developments of the invention are specified in the subclaims.

Die erfindungsgemäße Andrückrollenvorrichtung ist durch ihre einfache, Platz sparende Konstruktion leicht zu reinigen, da keine schwer zugänglichen Spalte oder dergleichen vorhanden sind und darüber hinaus keine schwer zu reinigenden Teile, wie z.B. Spiralfedern, verwendet werden. Die erfindungsgemäße Spannfeder erfüllt gleichzeitig die Funktion der Führung der Druckrolle und der Federung bzw. Dämpfung derselben. Durch diese einfache und somit kostengünstige Konstruktion tritt kein Klemmen oder Quietschen auf.The pressure roller device according to the invention is easy to clean due to its simple, space-saving construction, since there are no hard-to-reach gaps or the like, and moreover, there are no difficult-to-clean parts, such as e.g. Spiral springs, to be used. The tension spring according to the invention simultaneously fulfills the function of guiding the pressure roller and the suspension or damping thereof. Due to this simple and thus cost-effective construction no jamming or squeaking occurs.

Zudem können Folien mit unterschiedlichen Foliendicken verwendet werden, ohne etwas an der Konstruktion ändern zu müssen.In addition, films with different film thicknesses can be used without having to change anything in the construction.

Weitere Merkmale und Zweckmäßigkeiten der Erfindung ergeben sich aus der Beschreibung von Ausführungsbeispielen anhand der beigefügten Zeichnungen.Further features and advantages of the invention will become apparent from the description of embodiments with reference to the accompanying drawings.

Die Figuren zeigen:

Fig. 1
eine schematische perspektivische Ansicht einer Scha- lenverschließmaschine;
Fig. 2
eine schematische Seitenansicht der Schalenverschließ- maschine;
Fig. 3a
eine schematische Seitenansicht einer Andrückrollen- vorrichtung mit einer Spannfeder nach einer ersten Ausführungsform in einer geöffneten Position;
Fig. 3b
eine schematische Seitenansicht der Andrückrollenvor- richtung mit der Spannfeder nach einer ersten Ausfüh- rungsform in einer verriegelten Position;
Fig. 4
eine schematische Seitenansicht einer Spannfeder nach einer zweiten Ausführungsform;
Fig. 5
eine schematische perspektivische Ansicht der Andrück- rollenvorrichtung mit zwei Spannfedern nach der zwei- ten Ausführungsform in verriegelter Position.
The figures show:
Fig. 1
a schematic perspective view of a shell-closing machine;
Fig. 2
a schematic side view of the Schalenverschließ- machine;
Fig. 3a
a schematic side view of a Andrückrollen- device with a tension spring according to a first embodiment in an open position;
Fig. 3b
a schematic side view of the Andrückrollenvor- direction with the tension spring according to a first embodiment in a locked position;
Fig. 4
a schematic side view of a tension spring according to a second embodiment;
Fig. 5
a schematic perspective view of the Andrück- rolesvorrichtung with two tension springs according to the second embodiment in the locked position.

Im Folgenden wird mit Bezug auf Fig. 1 bis Fig. 3b eine erste Ausführungsform der Erfindung beispielhaft an einer Schalenverschließmaschine, auch Traysealer genannt, beschrieben.The following is with reference to Fig. 1 to Fig. 3b a first embodiment of the invention by way of example on a tray sealing machine, also called Traysealer described.

Fig. 1 zeigt einen Traysealer 1 mit einem Zuführband 2, einer oder mehreren Arbeitsstationen 3, z.B. einer Evakuier-, Siegel- und Schneidstation, einem Abführband 4, einem Maschinengestell 5, einer Folienspannvorrichtung 600, einer Bedienvorrichtung 30, einer Folienzuführrolle 32 und einem Folienrestaufwickler 31. Fig. 1 shows a Traysealer 1 with a feed belt 2, one or more workstations 3, eg an evacuating, sealing and cutting station, a discharge belt 4, a machine frame 5, a film tensioning device 600, an operating device 30, a film feed roller 32 and a Folienrestaufwickler 31st

Auf dem Zuführband 2 bzw. dem Abführband 4 werden im Betrieb beispielsweise schalenförmige Verpackungen in die Arbeitsstation 3 hinein bzw. aus ihr heraus transportiert. In der Arbeitsstation 3 werden die Verpackungen z.B. evakuiert, begast, versiegelt und geschnitten. Eine Folie 10 (siehe Fig. 3a, b) wird durch die Folienzuführrolle 32 zugeführt, durch die Folienspannvorrichtung 600 geführt und der Folienrest schließlich auf dem Folienrestaufwickler 31 aufgewickelt.On the conveyor belt 2 or the discharge conveyor 4, for example, cup-shaped packages are transported into or out of the work station 3 during operation. In the workstation 3, the packages are eg evacuated, fumigated, sealed and cut. A foil 10 (see Fig. 3a, b ) is fed through the film feed roller 32, passed through the film tensioning device 600 and the film residue finally wound on the Folienrestaufwickler 31.

Fig. 2 zeigt den Traysealer 1 in einer schematischen Seitenansicht. Innerhalb der Arbeitsstation 3 ist eine Andrückrollenvorrichtung 60 vorgesehen, die im Folgenden detailliert beschrieben wird. Fig. 2 shows the Traysealer 1 in a schematic side view. Within the work station 3, a pressure roller device 60 is provided, which will be described in detail below.

Fig. 3a zeigt die Andrückrollenvorrichtung 60 mit einer Antriebsrolle 8, einer Druckrolle 11 und dem Folienverlauf der Folie 10, sowie einer Spannfeder 6 in einer geöffneten Position in einer schematischen Seitenansicht. Die Spannfeder 6 weist die Form eines dünnen gebogenen, im Wesentlichen halbkreisförmigen bzw. U-förmigen Blechs auf. An einem Ende der Spannfeder 6 ist die Druckrolle 11 gelagert. An demselben Ende der Spannfeder 6 ist zusätzlich ein Griff 12 vorgesehen. Am anderen Ende der Spannfeder 6 ist ein Anschlag 7 und außerdem ein Bolzen 9 vorgesehen, über den die Spannfeder 6 mit einem Verbindungsblech 13 gelenkig verbunden ist. Das Verbindungsblech 13 ist wiederum über ein Befestigungselement 14 und eine Rollenbefestigung 16 mit einem Rollenträger 15 für die Antriebsrolle 8 fest verbunden. Im Wesentlichen verbindet die Spannfeder 6 also die Antriebsrolle 8 mit der Druckrolle 11, wobei die Antriebrolle 8 und die Druckrolle 11 jeweils an den freien Enden der halbkreisförmigen Spannfeder 6 angeordnet sind. Bei ortsfestem Rollenträger 15 ist die Spannfeder 6 um den Bolzen 9 schwenkbar. Die Antriebsrolle 8 ist über die Rollenbefestigung 16 drehbar mit dem Rollenträger 15 bzw. dem Verbindungsblech 13 verbunden. Die Folie 10 verläuft in dieser Position der Spannfeder 6 ungeführt bzw. ungeklemmt zwischen der Antriebsrolle 8 und der Druckrolle 11. Die Antriebsrolle 8, die Druckrolle 11, der Griff 12, sowie die Folie 10 erstrecken sich in die Zeichenebene hinein. Die in dieser Ansicht nicht gezeigte andere Seite der Andrückrollenvorrichtung 60 ist analog zu der oben beschriebenen Seite ausgeführt. Die Andrückrollenvorrichtung 60 weist insgesamt zwei Spannfedern 6 auf (vgl. Fig. 5). Um die Elastizität der Spannfeder 6 zu gewährleisten, ist sie aus einem elastischen Material wie z.B. Stahl oder Titan gefertigt. Fig. 3a shows the Andrückrollenvorrichtung 60 with a drive roller 8, a pressure roller 11 and the film flow of the film 10, and a tension spring 6 in an open position in a schematic side view. The tension spring 6 has the shape of a thin, curved, substantially semicircular or U-shaped metal sheet. At one end of the tension spring 6, the pressure roller 11 is mounted. At the same end of the tension spring 6, a handle 12 is additionally provided. At the other end of the tension spring 6, a stop 7 and also a bolt 9 is provided, via which the tension spring 6 is pivotally connected to a connecting plate 13. The connecting plate 13 is in turn firmly connected via a fastening element 14 and a roller mounting 16 with a roller carrier 15 for the drive roller 8. Essentially, the tension spring 6 thus connects the drive roller 8 to the pressure roller 11, wherein the drive roller 8 and the pressure roller 11 are respectively arranged at the free ends of the semicircular tension spring 6. In fixed roller carrier 15, the tension spring 6 is pivotable about the pin 9. The drive roller 8 is connected via the roller attachment 16 rotatably connected to the roller carrier 15 and the connecting plate 13. The film 10 extends in this position, the tension spring 6 unguided or unclamped between the drive roller 8 and the pressure roller 11. The drive roller 8, the pressure roller 11, the handle 12, and the film 10 extend into the plane. The other side of the Andrückrollenvorrichtung 60 not shown in this view is carried out analogously to the above-described page. The pressure roller device 60 has a total of two tension springs 6 (see. Fig. 5 ). In order to ensure the elasticity of the tension spring 6, it is made of an elastic material such as steel or titanium.

Fig. 3b zeigt den gleichen Aufbau wie in Fig. 3a, wobei sich die Spannfeder 6 hier in einer verriegelten Position befindet. Die Folie 10 ist zwischen der Antriebsrolle 8 und der Druckrolle 11 geklemmt bzw. durch die Drehbarkeit der beiden Rollen 8, 11 definiert geführt. Fig. 3b shows the same structure as in Fig. 3a , wherein the tension spring 6 is here in a locked position. The Slide 10 is clamped between the drive roller 8 and the pressure roller 11 and guided by the rotatability of the two rollers 8, 11 defined.

Im Betrieb wird die Spannfeder 6 aus der in Fig. 3a gezeigten geöffneten Position über den Bolzen 9 in eine in Fig. 3b gezeigte verriegelte Position geschwenkt. Der Anschlag 7 schlägt in der verriegelten Position an das Verbindungsblech 13 an und bildet somit eine Endposition der Schwenkung. Der Anschlag 7 ist z.B. durch einen (nicht gezeigten) Exzenter-Bolzen in der Lage einstellbar. Die querschnittsbezogene kleinste Entfernung von dem Schwenkpunkt bzw. Bolzen 9 der Spannfeder 6 bis zu der Außenfläche der Druckrolle 11 ist geringer als die querschnittsbezogene größte Entfernung von dem Bolzen 9 der Spannfeder 6 bis zu der Außenfläche der Antriebsrolle 8. Das bedeutet, dass die Spannfeder 6, wäre sie ein starres Bauteil, nicht in die Endposition bzw. die verriegelte Position gebracht werden könnte, da die Außenseite der Druckrolle 11 vorher an die Außenfläche der Antriebsrolle 8 anschlägt. Durch die Elastizität der Spannfeder 6 wird die Druckrolle 11 durch manuelle oder automatische Krafteinwirkung über den beschriebenen Totpunkt hinausgedrückt und rastet danach quasi ein. Die Endposition der Spannfeder 6 ist also nicht der Punkt der maximalen elastische Ausdehnung bzw. ist die Auslenkung der Spannfeder 6 in der Endposition bzw. verriegelten Position geringer. Dadurch wird die Druckrolle 11 in dieser Position gehalten und ist somit verriegelt. Die Verriegelung kann durch manuelle oder automatische Krafteinwirkung in die entgegengesetzte Richtung unter erneuter elastischer Verformung der Spannfeder 6 gelöst werden.In operation, the tension spring 6 from the in Fig. 3a shown opened position over the bolt 9 in an in Fig. 3b pivoted locked position shown. The stopper 7 abuts in the locked position on the connecting plate 13 and thus forms an end position of the pivoting. The stopper 7 is adjustable in position, for example by a (not shown) eccentric bolt. The cross-sectional related smallest distance from the pivot point or pin 9 of the tension spring 6 to the outer surface of the pressure roller 11 is less than the cross-sectional largest distance from the pin 9 of the tension spring 6 to the outer surface of the drive roller 8. Das means that the tension spring if it were a rigid component, could not be brought into the end position or the locked position, since the outside of the pressure roller 11 previously abuts against the outer surface of the drive roller 8. Due to the elasticity of the tension spring 6, the pressure roller 11 is pushed out by manual or automatic force above the dead center described and then engages quasi a. The end position of the tension spring 6 is therefore not the point of maximum elastic extension or the deflection of the tension spring 6 in the end position or locked position is lower. As a result, the pressure roller 11 is held in this position and is thus locked. The lock can be released by manual or automatic force in the opposite direction with renewed elastic deformation of the tension spring 6.

Durch die beschriebene Vorgehensweise wird die Folie 10 zwischen der Druckrolle 11 und der Antriebsrolle 8, die beispielsweise eine angetriebene Gummiwalze ist, geklemmt. Durch die Drehbarkeit der Druckrolle 11 bzw. der angetriebenen Antriebsrolle 8 ist die Folie 10 bewegbar.By the described procedure, the film 10 between the pressure roller 11 and the drive roller 8, which is for example a driven rubber roller, clamped. Due to the rotatability the pressure roller 11 and the driven drive roller 8, the film 10 is movable.

Fig. 4 zeigt die Spannfeder 6' nach einer zweiten Ausführungsform in einer schematischen Seitenansicht. Zusätzlich zu der in Fig. 3a, 3b beschriebenen Spannfeder 6, weist die Spannfeder 6' in dieser zweiten Ausführungsform eine angeformte Spannfederquerstrebe 21 auf, die mit einem im Wesentlichen kreisförmigen Abschnitt bzw. einem Passelement 22 endet. In dem Blech der Spannfeder 6' sind eine Bolzenbohrung 17, die für die Lagerung der Spannfeder 6' mit dem Bolzen 9 zusammenwirkt, eine Griffbohrung 18 für die Lagerung des Griffs 12 und eine Antriebsrollenbohrung 19 für die Lagerung der Antriebsrolle 9 (siehe Fig. 5) vorgesehen. Fig. 4 shows the tension spring 6 'according to a second embodiment in a schematic side view. In addition to the in Fig. 3a, 3b described tension spring 6, the tension spring 6 'in this second embodiment, an integrally formed Spannfederquerstrebe 21, which ends with a substantially circular portion or a fitting element 22. In the plate of the tension spring 6 'are a pin bore 17 which cooperates with the bolt 9 for the storage of the tension spring 6, a handle bore 18 for the storage of the handle 12 and a drive roller bore 19 for the storage of the drive roller 9 (see Fig. 5 ) intended.

In der Spannfeder 6' ist eine im Wesentlichen kreisförmige Aussparung 20 vorgesehen, die mit dem Passelement 22 im Betrieb zusammenwirkt. Auf diese Weise wird verhindert, dass sich die Spannfeder 6' über ihre Streckgrenze hinaus plastisch ausdehnt. Eine solche plastische Deformation hätte zur Folge, dass die sichere Funktion der Klemmung der Druckrolle 11 (siehe Fig. 5) nicht mehr gewährleistet wäre. Durch eine entsprechende Dicke des Spannfederblechs ist gewährleistet, dass das Passelement 22 bei Belastung nicht seitlich aus der Aussparung 20 heraus springt.In the tension spring 6 ', a substantially circular recess 20 is provided, which cooperates with the fitting element 22 in operation. In this way it is prevented that the tension spring 6 'plastically expands beyond its yield point. Such a plastic deformation would have the consequence that the secure function of the clamping of the pressure roller 11 (see Fig. 5 ) would no longer be guaranteed. By a corresponding thickness of the tension spring plate ensures that the fitting element 22 does not jump laterally out of the recess 20 under load.

Fig. 5 zeigt die Andrückrollenvorrichtung 60 mit zwei Spannfedern 6' nach der in Fig. 4 beschriebenen zweiten Ausführungsform. Die Antriebsrolle 8 ist durch eine beidseitige Antriebsrollenaufnahme 25, die wie eine Fahrradgabel ausgebildet ist, gelagert. Die Antriebsrollenaufnahme 25 ist Teil eines Antriebsrollenträgers 24. Die beiden Antriebsrollenträger 24 sind durch eine Querstrebe 23 verbunden, um die notwendige Stabilität des Systems zu gewährleisten und weisen außerdem Trägerbefestigungselemente 26 zum Befestigen der Andrückrollenvorrichtung 60 auf. Die Folie 10 verläuft zwischen den beiden Spannfedern 6'. Fig. 5 shows the Andrückrollenvorrichtung 60 with two tension springs 6 'after the in Fig. 4 described second embodiment. The drive roller 8 is supported by a double-sided drive roller mount 25, which is designed like a bicycle fork. The drive roller receptacle 25 is part of a drive roller carrier 24. The two drive roller carrier 24 are connected by a transverse strut 23 to the necessary stability of Systems and also have carrier fasteners 26 for attaching the Andrückrollenvorrichtung 60 auf. The film 10 extends between the two tension springs 6 '.

Im Betrieb wird die Andrückrollenvorrichtung 60 wie bereits unter Fig. 3b beschrieben, bedient. Ein Benutzer kann indem er eine Kraft auf den Griff 12 aufbringt die Folie 10 (siehe Fig. 3a, b) einspannen bzw. klemmen und wieder lösen.In operation, the Andrückrollenvorrichtung 60 as already under Fig. 3b described, served. By applying a force to the handle 12, a user can apply the film 10 (see FIG Fig. 3a, b ) or clamp and release again.

Die Spannfeder ist nicht auf die beschriebene Ausführungsform beschränkt. Eine Vielzahl von Ausführungsformen und verwendeten Materialien ist denkbar. Beispielsweise können die verwendeten Bleche auch aus Kunststoff bestehen.The tension spring is not limited to the described embodiment. A variety of embodiments and materials used is conceivable. For example, the sheets used can also be made of plastic.

Die Erfindung ist ferner nicht auf die Anwendung in einem Traysealer beschränkt. Vielmehr ist sie auch auf eine Tiefziehmaschine oder eine Kammerbandmaschine anwendbar.The invention is further not limited to use in a tray sealer. Rather, it is also applicable to a thermoforming machine or a chamber belt machine.

Claims (13)

  1. Packaging machine (1) comprising a pressure rolling device (60) comprising
    a driving roller (8) which is mounted in a driving roller retainer (25),
    a pressure roller (11) and at least
    one tension spring (6) which is articulated to the driving roller retainer (25),
    a film (10) being guided between the driving roller (8) and the pressure roller (11),
    the pressure roller (11) being guided and spring-loaded by the tension spring (6), and the pressure roller (11) engaging in a locked position of the pressure rolling device (60) and being held on the driving roller (8) by means of the resilience of the tension spring (6).
  2. Packaging machine according to claim 1, characterised in that the tension spring (6) is constructed in a single piece.
  3. Packaging machine according to claim 1 or claim 2, characterised in that the tension spring (6) is substantially formed from a metal sheet preferably having a semicircular or U-shaped form.
  4. Packaging machine according to any one of claims 1 to 3, characterised in that a free end of the tension spring (6) is connected to the driving roller (8) and another free end of the tension spring (6) is connected to the pressure roller (11).
  5. Packaging machine according to any one of claims 1 to 4, characterised in that the tension spring (6) is fixed to the stationary driving roller retainer (25) in a pivotable manner.
  6. Packaging machine according to any one of claims 1 to 5, characterised in that the film (10) can be clamped in a locked position between the driving roller (8) and the pressure roller (11) via the spring action of the tension spring (6).
  7. Packaging machine according to any one of claims 1 to 6, characterised in that the tension spring (6) is rigidly connected to the pressure roller (11).
  8. Packaging machine according to any one of claims 1 to 7, characterised in that the tension spring (6) has a tension spring cross brace (21), the deformability of the tension spring (6) being limited by the tension spring cross brace (21).
  9. Packaging machine according to any one of claims 1 to 8, characterised in that two tension springs (6) are provided, between which the driving roller (8) and the pressure roller (11) are accommodated.
  10. Packaging machine according to any one of claims 1 to 9, characterised in that a handle (12) is provided for moving the tension spring (6).
  11. Packaging machine according to claim 10, characterised in that the handle (12) extends substantially parallel to the driving roller (8) and/or the pressure roller (11).
  12. Packaging machine according to any one of claims 1 to 11, characterised in that the driving roller (8) extends substantially parallel to the pressure roller (11).
  13. Packaging machine according to any one of the preceding claims, characterised in that the smallest distance, in cross-section, from a pivot point of the tension spring (6) to the outer surface of the pressure roller (11) is less than the greatest distance, in cross-section, from the pivot point of the tension spring (6) to the outer surface of the driving roller (8).
EP09161219A 2008-06-12 2009-05-27 Packaging machine with a pressure roller device Not-in-force EP2133274B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008027978A DE102008027978B4 (en) 2008-06-12 2008-06-12 Packaging machine with a pressure roller device

Publications (2)

Publication Number Publication Date
EP2133274A1 EP2133274A1 (en) 2009-12-16
EP2133274B1 true EP2133274B1 (en) 2010-09-29

Family

ID=40902797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09161219A Not-in-force EP2133274B1 (en) 2008-06-12 2009-05-27 Packaging machine with a pressure roller device

Country Status (3)

Country Link
EP (1) EP2133274B1 (en)
AT (1) ATE482881T1 (en)
DE (2) DE102008027978B4 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2483463B (en) * 2010-09-08 2015-01-21 Itw Cs Uk Ltd Wide adhesive sheeted roll for contact cleaning

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013740A (en) 1957-12-16 1961-12-19 Cons Lithographing Corp Web tension control
DE1220321B (en) * 1961-09-20 1966-06-30 Zeva Elek Zitaets Ges Smits & Device on a packaging machine for the intermittent feeding of a strip of material
US3555768A (en) 1968-02-26 1971-01-19 Continental Can Co Method and apparatus for handling and registering webs for forming packages
US3985277A (en) * 1975-03-26 1976-10-12 Xerox Corporation Web handling device
US4790125A (en) * 1987-05-01 1988-12-13 New Holland Inc. Feed rollers for round baler net dispenser
EP0680912A3 (en) * 1994-05-02 1997-05-07 Fuji Photo Film Co Ltd Method of and apparatus for feeding scanned medium.

Also Published As

Publication number Publication date
ATE482881T1 (en) 2010-10-15
EP2133274A1 (en) 2009-12-16
DE102008027978A1 (en) 2010-01-07
DE502009000114D1 (en) 2010-11-11
DE102008027978B4 (en) 2010-03-18

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