EP2766262B1 - Thermoforming packaging machine - Google Patents

Thermoforming packaging machine Download PDF

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Publication number
EP2766262B1
EP2766262B1 EP12778239.9A EP12778239A EP2766262B1 EP 2766262 B1 EP2766262 B1 EP 2766262B1 EP 12778239 A EP12778239 A EP 12778239A EP 2766262 B1 EP2766262 B1 EP 2766262B1
Authority
EP
European Patent Office
Prior art keywords
film
packaging machine
film web
web
thermo
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.)
Active
Application number
EP12778239.9A
Other languages
German (de)
French (fr)
Other versions
EP2766262A1 (en
Inventor
Elmar Ehrmann
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
Original Assignee
Multivac Sepp Haggenmueller GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Publication of EP2766262A1 publication Critical patent/EP2766262A1/en
Application granted granted Critical
Publication of EP2766262B1 publication Critical patent/EP2766262B1/en
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B31B70/022—Holders for feeding or positioning sheets or webs
    • 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
    • B65B41/14—Feeding webs from rolls by grippers
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/16—Advancing webs by web-gripping means, e.g. grippers, clips
    • 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
    • B65H23/032—Controlling transverse register of web
    • B65H23/038—Controlling transverse register of web by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • 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
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/442—Moving, forwarding, guiding material by acting on edge of handled material
    • B65H2301/4422—Moving, forwarding, guiding material by acting on edge of handled material with guide member moving in the material direction
    • 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
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/449—Features of movement or transforming movement of handled material
    • B65H2301/4493—Features of movement or transforming movement of handled material intermittent
    • 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
    • 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 invention relates to a thermoforming packaging machine with a film feeding device for detecting and transporting one side of a film web having the features of claim 1.
  • thermoforming packaging machines are known in which a film web by means of two staple chains, which are arranged on both sides of the film web, detected and intermittently transported through the thermoforming packaging machine.
  • the machine width is determined by the width of the film web to be transported or vice versa.
  • Disadvantage of thermoforming packaging machines with two clamp chains arranged on both sides is that only a single film web width corresponding to the distance of the staple chains can be used to each other, as a conversion of the machine would mean a huge effort to another film web width and is technically difficult to implement.
  • Object of the present invention is to provide a way to be able to transport and edit film webs with different film web widths on a thermoforming packaging machine.
  • thermoforming packaging machine with the features of claim 1.
  • Advantageous further developments are specified in the subclaims.
  • thermoforming packaging machine has a machine frame with a first and a second side aligned in a direction of transport for a film web, and a film feed device for detecting one side of the film web and for transporting the film web, the film feed device being provided on only one side of the machine frame.
  • a one-sided film feed allows the use of different width film webs with a maximum width, which is determined by the distance between the two sides of the machine frame.
  • film material can be saved since, on the one hand, no film edge has to be provided for a further film feed device and, on the other hand, the Film web width can be matched exactly to the required space for the desired package size.
  • the cost of film consumption per package is an important cost factor for manufacturing costs.
  • thermoforming packaging machine According to the invention, a one-sided film feeding device is sufficient, since to date the person skilled in the art has always assumed a two-sided stretched film web.
  • the invention thus overcomes the prejudice that for a secure, warp-free transport of a film web in a thermoforming packaging machine necessarily a symmetrical, double-sided detection of the film web is required.
  • a device for web edge control for a position control of the film web is provided relative to the film feed device to supply one side of the film web of the film feeding device for detecting exactly, so that a safe transport can be ensured.
  • the device for web edge control preferably has a roller which can be pivoted relative to the film feed device and which is driven, for example, by means of a servomotor.
  • a roller which can be pivoted relative to the film feed device and which is driven, for example, by means of a servomotor.
  • the unwound from a feed roll of film web passes over this role before it is brought to the film feeding device.
  • By changing the position of the roller a lateral movement of the film web relative to the film feed device or the machine frame can be produced and the film web can be guided accordingly or one side of the film web can be positioned.
  • at least two rollers are connected together to a frame, which in turn is designed to be pivotable relative to the film feeding device.
  • a thermoforming packaging machine comprises one or more film counterparts for the film web, which are provided before and / or after a work station, for example a forming or sealing station.
  • a work station for example a forming or sealing station.
  • it can lead to adhesion by negative pressure between formed in the film web troughs and a tool lower part and thereby can Film web tend to be pulled from the lower tool part at least partially down.
  • the film counter bearings hold the film web in its transport plane and support the release of the troughs from the lower tool part and prevent a pulling down of the film web by the lower tool part, especially in the area which is not held by the film feed device.
  • a clamping device which clamps the film web onto the film counter bearings, above all in areas near the workstation, in order to prevent the film web from being pulled down by the tool lower part when the workstation is opened.
  • an additional transport device for supporting the one-sided film transport is provided by the film feeding device.
  • the background is that at the sealing station, a lid film is sealed onto the film web with the shaped hollows.
  • the cover film is drawn off from a material store by the film transport through the film feeding device attracts the sealed to the film web lid film with the transport direction. This increases the tensile forces on the film web, and in the region of the film webs lying opposite the film feed device increases the risk of wrinkling in the film web, which can be reduced by the additional transport device.
  • the additional transport device is provided for transporting a cover film in front of the sealing station, so that no further tensile forces act on the film web and wrinkling of the film web and the cover film can be prevented.
  • the additional transport device preferably has a staple chain for synchronously transporting the cover film with the film web in order to be able to transport different widths of cover films.
  • a staple chain feed of the cover film can also be preceded by a device for web edge control in order to be able to feed the position of one side of the cover film exactly to the staple chain of the additional transport device.
  • a tray slide can be arranged after the sealing station in order to prevent wrinkling due to tensile forces occurring through the cover film.
  • the package wells from the bottom of the film web can be advanced by means of such a mold slide synchronously with the film transport through the film feeding device.
  • the tray slide here has sliding elements which extend transversely to the conveying direction, over all adjacent tracks of packages, and attack the packing pits.
  • thermoforming packaging machine In a preferred embodiment of a thermoforming packaging machine according to the invention, the side of the machine frame lying opposite the film feed device is opened in the region of a workstation in order to be able to move tools of the workstation horizontally transversely to the transport direction. This allows a removal of tools for maintenance or cleaning purposes, without having to cut or cut the film web. There are no conversion measures necessary because only side panels must be removed or opened.
  • the workstations may be a forming, sealing or cutting station.
  • the tools to be considered are the upper part of the mold, the lower part of the mold, the upper part of the sealing tool, the lower part of the sealing tool, etc.
  • the corresponding tools are preferably also to be used, and thus a simple change of these tools is a particular advantage.
  • the film feed device opposite side of the machine frame can be interrupted or partially opened only for the required space.
  • the film web intended for processing in a thermoforming packaging machine described above is at least 200 ⁇ m thick, preferably at least 250 ⁇ m.
  • the film feeding device is designed as a staple chain.
  • the film feeding device could detect the film web, for example by needling and fix it laterally.
  • FIG. 1 1 shows a forming station 2, a sealing station 3, a cross-cutting device 4 and a longitudinal cutting device 5, which are arranged in this working order on a machine frame 6 in a working direction R.
  • the thermoforming packaging machine 1 shown in FIG. On the input side is located on the machine frame 6, a feed roller 7, from which a film web 8 is withdrawn. In the region of the sealing station 3, a material reservoir 9 is provided, from which a cover film 10 is drawn off. In this case, aificattranspört sensible 110 is provided for the cover sheet 10 between the material storage 9 and the sealing station 3.
  • a discharge device 13 is provided in the form of a conveyor belt, are transported with the finished, isolated packaging 17.
  • thermoforming packaging machine 1 has a film feeding device which grips the film web 8 and transports it further per working cycle in the working direction R.
  • the film feeding device is characterized by a arranged only on one side of the film web 8 transport chain 11 (see FIG. 2 and 3 ).
  • a device 12 for web edge control for the film web 8 is arranged between the feed roller 7 and the staple chain 11.
  • the forming station 2 is formed as a thermoforming station in which troughs 14 are formed into the film web 8 after being heated by a heater, not shown, by deep drawing.
  • the forming station 2 may be designed such that in the direction transverse to the working direction R a plurality of wells are formed side by side.
  • an insertion path 15 is provided, in which the molds 16 formed in the film web 8 are filled with product 16.
  • the sealing station 3 has a sealable chamber in which the atmosphere in the wells 14 can be optionally replaced prior to sealing, for example by gas purging with a replacement gas or with a gas mixture.
  • the cross-cutting device 4 is designed as a punch which cuts through the film web 8 and the cover film 10 in a direction transverse to the working direction R between adjacent depressions 14. In this case, the cross-cutting device 4 operates such that the film web 8 is not separated over the entire width, but at least in an edge region is not severed. This allows a controlled further transport of the film web 8 with the lid film 10 by means of the film feed device.
  • the longitudinal cutting device 5 is designed as a knife arrangement with which the film web 8 and the cover film 10 are severed between adjacent depressions 14 and at the lateral edge of the film 8, so that individual packages 17 are present behind the longitudinal cutting device 5.
  • thermoforming packaging machine 1 also has a controller 18. It has the task to control the processes running in the thermoforming packaging machine 1 processes and monitor.
  • a display device 19 with operating elements 20 serves to visualize or influence the process sequences in the thermoforming packaging machine 1 for or by an operator.
  • thermoforming packaging machine 1 The general operation of the thermoforming packaging machine 1 will be briefly described below.
  • the film web 8 is withdrawn from the feed roller 7 and fed along a device 12 for web edge control of the unilaterally arranged staple chain 11.
  • the device 12 ensures that one side of the film web 8 of the staple chain 11 is fed so that the staple chain 11 securely detects the film web 8 and transported intermittently safely in the transport direction R through the thermoforming packaging machine 1.
  • the film web 8 is transported to the forming station 2 and in this are formed by deep drawing troughs 14 in the film web 8.
  • the troughs 14 are transported along with the surrounding area of the film web 8 in a main working cycle to the insertion path 15, in which they are filled with product 16.
  • the filled wells 14 are transported together with the surrounding area of the film web 8 in the main working cycle by the one-sided film feeding device in the sealing station 3.
  • the cover film 10 is transported on to the film web 8 with a feed operation of the film web 8 after a sealing operation.
  • the cover sheet 10 is supported by the material storage 9 supported by an additional transport device 110
  • sealing the lid film 10 on the wells 14 formed sealed packaging 17, which are separated in the following cuts 4 and 5 and transported out by means of the discharge device 13 from the thermoforming packaging machine 1 instead of the transverse 4 and longitudinal cutting 5 can also be a complete cutting tool that separates packages 17 with a single cutting process can be provided.
  • FIG. 2 is a partial view of the front portion of a thermoforming packaging machine 1 from the feed roller 7 to the insertion path 15 is shown as a schematic plan view.
  • the thermoforming packaging machine 1 has as a film feeding device only a single staple chain 11, which is attached by means of a chain guide 21 on a first side 22 of the machine frame 6.
  • the opposite, second side 22 'of the machine frame 6 is arranged at a distance D parallel to the first side 22 and is partially recessed in the region of the forming station 2.
  • the thermoforming packaging machine 1 allows the processing of different film web widths D1 or D2, since the film webs 8 or 8 'always only on the first side 22 of the machine frame 6 are detected and transported by the staple chain 11.
  • the device 12 in the form of a roller (later also referred to 12) for web edge control is pivotally mounted on the machine frame 6.
  • a sensor 23 detects the position of one side of the film web 8 and forwards the information about this to the controller 18.
  • the controller 18 controls by means of a servomotor 24 (see FIG. 3 )
  • the position of the roller 12 such that on a pivoting or a change in the position of the roller 12, the side 25 of the film web 8 to the staple chain 11 can be adjusted to ensure a secure detection of the film web 8 through the staple chain 11.
  • strip-shaped film counter bearings 26 and 27 are provided directly below the film web, which are designed to be vertically movable. In its upper position directly below the film web 8, the film counter bearings 26, 27 hold the film web 8 after the molding process in this upper position, so that during movement of a mold lower part 29 when opening the forming station 2, the film web 8 not by adhesion of the mold cavities 14 on the lower mold part 29th can be pulled down and the film web 8 can be easier or faster from the mold lower part 29 can solve.
  • strip-shaped film supports 28 are arranged as support of the film web 8 between or next to the tracks S of packing troughs 14 directly below the film web 8.
  • FIG. 3 shows in a schematic side view of the lower mold part 29 and a mold upper part 30 of the forming station 2.
  • the film counter bearings 26, 27 are vertically movable and remain in their upper position until the mold base 28 has performed at least part of its lifting movement down.
  • the film counter bearings 26, 27 then follow this lifting movement, in order to release a feed movement of the shaped depressions 14 or the film web 8 as quickly as possible.
  • clamping devices 34, 35 by means of a membrane clamping force against the foil counter bearings 26, 27 apply or the film counter bearings 26, 27 generate a clamping force against statically mounted clamping devices 34, 35, which may be located directly on the top of the film web 8.
  • FIG. 3 It is shown that the opposite of the staple chain 11 located second side 22 'of the machine frame 6 has a recess 31 to allow movement of the molds 29, 30 in the direction (out of the plane) transversely to the transport direction R to a tool change or a Maintenance or cleaning of the tools 29, 30 easier.
  • a first clip 33 of the clip chain 11 In the region of a film inlet 32, a first clip 33 of the clip chain 11 is not yet closed to the extent that it clamps the film web 8. With the advancing movement of the staple chain 11 in the transport direction R, the clip 32 closes and detects the film web 8.
  • the web edge control with the sensor 23 and the servo motor 24 ensures that the position change of the roller 12, preferably by a pivoting movement about a vertical axis, Accordingly, the position of the side 25 of the film web 8 suitable for detecting by the bracket 33 controls.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Description

Die Erfindung bezieht sich auf eine Tiefziehverpackungsmaschine mit einer Folienvorschubeinrichtung zum Erfassen und Transportieren einer Seite einer Folienbahn mit den Merkmalen des Anspruchs 1.The invention relates to a thermoforming packaging machine with a film feeding device for detecting and transporting one side of a film web having the features of claim 1.

Aus EP 0 126 878 A1 und EP 1 816 075 A1 der Anmelderin sind Tiefziehverpackungsmaschinen bekannt, bei denen eine Folienbahn mittels zweier Klammerketten, die beidseitig der Folienbahn angeordnet sind, erfasst und intermittierend durch die Tiefziehverpackungsmaschine transportiert wird. Dabei wird die Maschinenbreite durch die Breite der zu transportierenden Folienbahn bestimmt oder umgekehrt. Nachteil von Tiefziehverpackungsmaschinen mit zwei beidseitig angeordneten Klammerketten ist, dass nur eine einzige Folienbahnbreite entsprechen dem Abstand der Klammerketten zueinander eingesetzt werden kann, da ein Umbau der Maschine zu einer anderen Folienbahnbreite einen enormen Aufwand bedeuten würde und technisch kaum zu realisieren ist.Out EP 0 126 878 A1 and EP 1 816 075 A1 The applicant is thermoforming packaging machines are known in which a film web by means of two staple chains, which are arranged on both sides of the film web, detected and intermittently transported through the thermoforming packaging machine. The machine width is determined by the width of the film web to be transported or vice versa. Disadvantage of thermoforming packaging machines with two clamp chains arranged on both sides is that only a single film web width corresponding to the distance of the staple chains can be used to each other, as a conversion of the machine would mean a huge effort to another film web width and is technically difficult to implement.

Aufgabe der vorliegenden Erfindung ist es, eine Möglichkeit zu schaffen, auf einer Tiefziehverpackungsmaschine Folienbahnen mit unterschiedlichen Folienbahnbreiten transportieren und bearbeiten zu können.Object of the present invention is to provide a way to be able to transport and edit film webs with different film web widths on a thermoforming packaging machine.

Diese Aufgabe wird gelöst durch eine Tiefziehverpackungsmaschine mit den Merkmalen des Anspruchs 1. Vorteilhafte Weiterbildungen sind in den Unteransprüchen angegeben.This object is achieved by a thermoforming packaging machine with the features of claim 1. Advantageous further developments are specified in the subclaims.

Die erfindungsgemäße Tiefziehverpackungsmaschine weist einen in einer Transportrichtung für eine Folienbahn ausgerichteten Maschinenrahmen mit einer ersten und einer zweiten Seite auf, sowie eine Folienvorschubeinrichtung zum Erfassen einer Seite der Folienbahn und zum Transportieren der Folienbahn, wobei nur auf einer Seite des Maschinenrahmens die Folienvorschubeinrichtung vorgesehen ist. Ein derartiger einseitiger Folienvorschub ermöglicht den Einsatz von verschieden breiten Folienbahnen mit einer maximalen Breite, die von dem Abstand der zwei Seiten des Maschinenrahmens vorgegeben ist. Durch den Einsatz von frei wählbaren Folienbahnbreiten kann Folienmaterial eingespart werden, da zum Einen kein Folienrand für eine weitere Folienvorschubeinrichtung vorgesehen werden muss und zum Anderen die Folienbahnbreite exakt auf den benötigten Platz für die gewünschte Packungsabmessung abgestimmt werden kann. Besonders bei Hartfolien und Mehrschichtfolien sind die Kosten des Folienverbrauchs pro Packung ein wichtiger Kostenfaktor für die Herstellkosten.The thermoforming packaging machine according to the invention has a machine frame with a first and a second side aligned in a direction of transport for a film web, and a film feed device for detecting one side of the film web and for transporting the film web, the film feed device being provided on only one side of the machine frame. Such a one-sided film feed allows the use of different width film webs with a maximum width, which is determined by the distance between the two sides of the machine frame. By using freely selectable film web widths, film material can be saved since, on the one hand, no film edge has to be provided for a further film feed device and, on the other hand, the Film web width can be matched exactly to the required space for the desired package size. Especially with rigid films and multilayer films, the cost of film consumption per package is an important cost factor for manufacturing costs.

Es war für den Fachmann überaus erstaunlich und nicht zu erwarten, dass bei der erfindungsgemäßen Tiefziehverpackungsmaschine eine einseitige Folienvorschubeinrichtung ausreichend ist, da der Fachmann bis dato immer von einer zweiseitig gespannten Folienbahn ausgegangen ist. Die Erfindung überwindet damit das Vorurteil, dass für einen sicheren, verzugfreien Transport einer Folienbahn in einer Tiefziehverpackungsmaschine zwingend ein symmetrisches, beidseitiges Erfassen der Folienbahn erforderlich ist.It was extremely surprising for the person skilled in the art and not to be expected that in the case of the thermoforming packaging machine according to the invention, a one-sided film feeding device is sufficient, since to date the person skilled in the art has always assumed a two-sided stretched film web. The invention thus overcomes the prejudice that for a secure, warp-free transport of a film web in a thermoforming packaging machine necessarily a symmetrical, double-sided detection of the film web is required.

In einer vorteilhaften Ausführung ist eine Einrichtung zur Bahnkantensteuerung für eine Positionsregelung der Folienbahn reloativ zur Folienvorschubeinrichtung vorgesehen, um eine Seite der Folienbahn der Folienvorschubeinrichtung zum Erfassen exakt zuzuführen, damit eine sicherer Transport gewährleistet werden kann.In an advantageous embodiment, a device for web edge control for a position control of the film web is provided relative to the film feed device to supply one side of the film web of the film feeding device for detecting exactly, so that a safe transport can be ensured.

Vorzugsweise weist die Einrichtung zur Bahnkantensteuerung eine relativ zur Folienvorschubeinrichtung schwenkbare Rolle auf, die beispielsweise mittels eines Servomotors angetrieben wird. Dabei läuft die von einer Zufuhrrolle abgewickelte Folienbahn über diese Rolle, bevor sie an die Folienvorschubeinrichtung herangeführt wird. Durch eine Veränderung der Lage der Rolle kann eine seitliche Bewegung der Folienbahn gegenüber der Folienvorschubeinrichtung bzw. dem Maschinenrahmen erzeugt werden und die Folienbahn entsprechend geführt bzw. eine Seite der Folienbahn positioniert werden. Denkbar ist auch eine Variante, bei der wenigstens zwei Rollen gemeinsam mit einem Gestell verbunden sind, das wiederum schwenkbar relativ zur Folienvorschubeinrichtung ausgeführt ist.The device for web edge control preferably has a roller which can be pivoted relative to the film feed device and which is driven, for example, by means of a servomotor. In this case, the unwound from a feed roll of film web passes over this role before it is brought to the film feeding device. By changing the position of the roller, a lateral movement of the film web relative to the film feed device or the machine frame can be produced and the film web can be guided accordingly or one side of the film web can be positioned. Also conceivable is a variant in which at least two rollers are connected together to a frame, which in turn is designed to be pivotable relative to the film feeding device.

Bevorzugt weist eine erfindungsgemäße Tiefziehverpackungsmaschine ein oder mehrere Foliengegenlager für die Folienbahn auf, die vor und/oder nach einer Arbeitsstation, beispielsweise einer Form- oder Siegelstation, vorgesehen sind. Beim Öffnen einer Arbeitsstation kann es zu einer Adhäsion durch Unterdruck zwischen in die Folienbahn geformte Mulden und einem Werkzeugunterteil kommen und dabei kann die Folienbahn dazu neigen, vom Werkzeugunterteil wenigstens teilweise nach unten gezogen zu werden. Die Foliengegenlager halten die Folienbahn in ihrer Transportebene und unterstützen das Lösen der Mulden aus dem Werkzeugunterteil und verhindern ein Herunterziehen der Folienbahn durch das Werkzeugunterteil vor allem im Bereich, der nicht durch die Folienvorschubeinrichtung gehalten wird.Preferably, a thermoforming packaging machine according to the invention comprises one or more film counterparts for the film web, which are provided before and / or after a work station, for example a forming or sealing station. When opening a workstation, it can lead to adhesion by negative pressure between formed in the film web troughs and a tool lower part and thereby can Film web tend to be pulled from the lower tool part at least partially down. The film counter bearings hold the film web in its transport plane and support the release of the troughs from the lower tool part and prevent a pulling down of the film web by the lower tool part, especially in the area which is not held by the film feed device.

In einer vorteilhaften Weiterbildung ist eine Klemmeinrichtung vorgesehen, die die Folienbahn auf die Foliengegenlager, vor allem in Bereichen nahe der Arbeitsstation, klemmt, um ein Herunterziehen der Folienbahn durch das Werkzeugunterteil beim Öffnen der Arbeitsstation zu verhindern.In an advantageous development, a clamping device is provided which clamps the film web onto the film counter bearings, above all in areas near the workstation, in order to prevent the film web from being pulled down by the tool lower part when the workstation is opened.

Vorzugsweise ist eine Zusatztransporteinrichtung zur Unterstützung des einseitigen Folientransports durch die Folienvorschubeinrichtung vorgesehen. Hintergrund ist, dass an der Siegelstation eine Deckelfolie auf die Folienbahn mit den geformten Mulden aufgesiegelt wird. Die Deckelfolie wird von einem Materialspeicher abgezogen, indem der Folientransport durch die Folienvorschubeinrichtung die an die Folienbahn angesiegelte Deckelfolie mit der Transportrichtung zieht. Damit erhöhen sich die Zugkräfte auf die Folienbahn und im gegenüber der Folienvorschubeinrichtung liegenden Bereich der Folienbahnen erhöht sich das Risiko einer Faltenbildung in der Folienbahn, das durch die Zusatztransporteinrichtung vermindert werden kann.Preferably, an additional transport device for supporting the one-sided film transport is provided by the film feeding device. The background is that at the sealing station, a lid film is sealed onto the film web with the shaped hollows. The cover film is drawn off from a material store by the film transport through the film feeding device attracts the sealed to the film web lid film with the transport direction. This increases the tensile forces on the film web, and in the region of the film webs lying opposite the film feed device increases the risk of wrinkling in the film web, which can be reduced by the additional transport device.

Vorzugsweise ist die Zusatztransporteinrichtung zum Transportieren einer Deckelfolie vor der Siegelstation vorgesehen, damit keine weiteren Zugkräfte auf die Folienbahn wirken und eine Faltenbildung der Folienbahn und der Deckelfolie verhindert werden kann.Preferably, the additional transport device is provided for transporting a cover film in front of the sealing station, so that no further tensile forces act on the film web and wrinkling of the film web and the cover film can be prevented.

Die Zusatztransporteinrichtung weist bevorzugt eine Klammerkette zum mit der Folienbahn synchronen Transportieren der Deckelfolie auf, um auch unterschiedliche Breiten von Deckelfolien transportieren zu können. Einem solchen einseitigen Klammerkettenvorschub der Deckelfolie kann auch eine Einrichtung zur Bahnkantensteuerung vorgeschaltet sein, um die Lage einer Seite der Deckelfolie exakt der Klammerkette der Zusatztransporteinrichtung zuführen zu können.The additional transport device preferably has a staple chain for synchronously transporting the cover film with the film web in order to be able to transport different widths of cover films. Such a one-sided staple chain feed of the cover film can also be preceded by a device for web edge control in order to be able to feed the position of one side of the cover film exactly to the staple chain of the additional transport device.

In einer vorteilhaften Variante kann ein Muldenschieber nach der Siegelstation angeordnet sein, um eine Faltenbildung wegen auftretender Zugkräfte durch die Deckelfolie zu verhindern.In an advantageous variant, a tray slide can be arranged after the sealing station in order to prevent wrinkling due to tensile forces occurring through the cover film.

Vorzugsweise können die Packungsmulden von der Unterseite der Folienbahn mittels eines solchen Muldenschiebers synchron mit dem Folientransport durch die Folienvorschubeinrichtung vorschiebbar sein. Der Muldenschieber weist dabei Schiebeelemente auf, die sich quer zur Förderrichtung erstrecken, über alle nebeneinander liegenden Spuren von Packungen, und die an den Packungsmulden angreifen.Preferably, the package wells from the bottom of the film web can be advanced by means of such a mold slide synchronously with the film transport through the film feeding device. The tray slide here has sliding elements which extend transversely to the conveying direction, over all adjacent tracks of packages, and attack the packing pits.

In einer bevorzugten Ausführung einer erfindungsgemäßen Tiefziehverpackungsmaschine ist die gegenüber der Folienvorschubeinrichtung liegende Seite des Maschinenrahmens im Bereich einer Arbeitsstation geöffnet, um Werkzeuge der Arbeitsstation horizontal quer zur Transportrichtung bewegen zu können. Dies ermöglicht ein Herausnehmen von Werkzeugen zu Wartungs- oder Reinigungszwecken, ohne die Folienbahn dabei aus- oder abschneiden zu müssen. Es sind keine Umbaumaßnahmen notwendig, da nur Seitenverkleidungen abgenommen oder aufgeklappt werden müssen. Bei den Arbeitsstationen kann es sich um eine Form-, Siegel- oder Schneidstation handeln. Als Werkzeuge sind Formwerkzeugoberteil, Formwerkzeugunterteil, Siegelwerkzeugoberteil, Siegelwerkzeugunterteil etc. anzusehen. Entsprechend dem Einsatz von unterschiedlichen Folienbahnbreiten sind bevorzugt auch die entsprechenden Werkzeuge einzusetzen und somit ein einfaches Wechseln dieser Werkzeuge ein besonderer Vorteil. Dabei kann die der Folienvorschubeinrichtung gegenüberliegende Seite des Maschinenrahmens unterbrochen oder nur für den benötigten Platzbedarf teilweise geöffnet sein.In a preferred embodiment of a thermoforming packaging machine according to the invention, the side of the machine frame lying opposite the film feed device is opened in the region of a workstation in order to be able to move tools of the workstation horizontally transversely to the transport direction. This allows a removal of tools for maintenance or cleaning purposes, without having to cut or cut the film web. There are no conversion measures necessary because only side panels must be removed or opened. The workstations may be a forming, sealing or cutting station. The tools to be considered are the upper part of the mold, the lower part of the mold, the upper part of the sealing tool, the lower part of the sealing tool, etc. According to the use of different film web widths, the corresponding tools are preferably also to be used, and thus a simple change of these tools is a particular advantage. In this case, the film feed device opposite side of the machine frame can be interrupted or partially opened only for the required space.

Vorzugsweise ist die Folienbahn, die in einer oben beschriebenen Tiefziehverpackungsmaschine zum Verarbeiten vorgesehen ist, wenigstens 200 µm stark, vorzugsweise wenigstens 250 µm.Preferably, the film web intended for processing in a thermoforming packaging machine described above is at least 200 μm thick, preferably at least 250 μm.

Bevorzugt ist die Folienvorschubeinrichtung als Klammerkette ausgeführt. Alternativ könnte die Folienvorschubeinrichtung die Folienbahn zum Beispiel durch Nadeln erfassen und seitlich fixieren.Preferably, the film feeding device is designed as a staple chain. Alternatively, the film feeding device could detect the film web, for example by needling and fix it laterally.

Denkbar ist auch der Einsatz von zwei oder mehr Folienvorschubeinrichtungen bzw. Klammerketten zum Transportieren einer Folienbahn, die nacheinander auf einer Seite des Maschinenrahmens vorgesehen sind.Also conceivable is the use of two or more film feed devices or staple chains for transporting a film web, which are provided successively on one side of the machine frame.

Im Folgenden werden vorteilhafte Ausführungsbeispiele der Erfindung anhand einer Zeichnung näher erläutert. Im Einzelnen zeigen:

Figur 1:
eine schematische Seitenansicht einer erfindungsgemäßen Tiefziehverpackungsmaschine,
Figur 2:
eine schematische Draufsicht eines Teils der Tiefziehverpackungsmaschine von Figur 1 und
Figur 3:
eine schematische Seitenansicht der in Figur 2 dargestellten Teilansicht.
In the following, advantageous embodiments of the invention will be explained in more detail with reference to a drawing. In detail show:
FIG. 1:
a schematic side view of a thermoforming packaging machine according to the invention,
FIG. 2:
a schematic plan view of a part of the thermoforming packaging machine of FIG. 1 and
FIG. 3:
a schematic side view of in FIG. 2 shown partial view.

Gleiche Komponenten sind in den Figuren durchgängig mit gleichen Bezugszeichen versehen worden.The same components have been provided throughout the figures with the same reference numerals.

Figur 1 zeigt in schematischer Ansicht eine erfindungsgemäße Tiefziehverpackungsmaschine 1. Diese Tiefziehverpackungsmaschine 1 weist eine Formstation 2, eine Siegelstation 3, eine Querschneideeinrichtung 4 und eine Längsschneideeinrichtung 5 auf, die in dieser Reihenfolge in einer Arbeitsrichtung R an einem Maschinenrahmen 6 angeordnet sind. Eingangsseitig befindet sich an dem Maschinenrahmen 6 eine Zufuhrrolle 7, von der eine Folienbahn 8 abgezogen wird. Im Bereich der Siegelstation 3 ist ein Materialspeicher 9 vorgesehen, von dem eine Deckelfolie 10 abgezogen wird. Dabei ist eine Zusatztranspörteinrichtung 110 für die Deckelfolie 10 zwischen dem Materialspeicher 9 und der Siegelstation 3 vorgesehen. Ausgangsseitig ist an der Tiefziehverpackungsmaschine 1 eine Abfuhreinrichtung 13 in Form eines Transportbandes vorgesehen, mit der fertige, vereinzelte Verpackungen 17 abtransportiert werden. Ferner weist die Tiefziehverpackungsmaschine 1 eine Folienvorschubeinrichtung auf, die die Folienbahn 8 ergreift und diese pro Hauptarbeitstakt in der Arbeitsrichtung R weitertransportiert. Die Folienvorschubeinrichtung ist dabei durch eine nur einseitig an der Folienbahn 8 angeordnete Transportkette 11 (siehe Figur 2 und 3) ausgeführt. Eine Einrichtung 12 zur Bahnkantensteuerung für die Folienbahn 8 ist zwischen der Zufuhrrolle 7 und der Klammerkette 11 angeordnet. FIG. 1 1 shows a forming station 2, a sealing station 3, a cross-cutting device 4 and a longitudinal cutting device 5, which are arranged in this working order on a machine frame 6 in a working direction R. The thermoforming packaging machine 1 shown in FIG. On the input side is located on the machine frame 6, a feed roller 7, from which a film web 8 is withdrawn. In the region of the sealing station 3, a material reservoir 9 is provided, from which a cover film 10 is drawn off. In this case, a Zusatztranspörteinrichtung 110 is provided for the cover sheet 10 between the material storage 9 and the sealing station 3. On the output side of the thermoforming packaging machine 1, a discharge device 13 is provided in the form of a conveyor belt, are transported with the finished, isolated packaging 17. Furthermore, the thermoforming packaging machine 1 has a film feeding device which grips the film web 8 and transports it further per working cycle in the working direction R. The film feeding device is characterized by a arranged only on one side of the film web 8 transport chain 11 (see FIG. 2 and 3 ). A device 12 for web edge control for the film web 8 is arranged between the feed roller 7 and the staple chain 11.

In der dargestellten Ausführungsform ist die Formstation 2 als eine Tiefziehstation ausgebildet, bei der in die Folienbahn 8, nachdem sie durch eine nicht dargestellte Heizvorrichtung erwärmt wurde, durch Tiefziehen Mulden 14 geformt werden. Dabei kann die Formstation 2 derart ausgebildet sein, dass in der Richtung quer zur Arbeitsrichtung R mehrere Mulden nebeneinander gebildet werden. In Arbeitsrichtung R hinter der Formstation 2 ist eine Einlegestrecke 15 vorgesehen, in der die in der Folienbahn 8 geformten Mulden 14 mit Produkt 16 befüllt werden.In the illustrated embodiment, the forming station 2 is formed as a thermoforming station in which troughs 14 are formed into the film web 8 after being heated by a heater, not shown, by deep drawing. In this case, the forming station 2 may be designed such that in the direction transverse to the working direction R a plurality of wells are formed side by side. In the working direction R behind the forming station 2, an insertion path 15 is provided, in which the molds 16 formed in the film web 8 are filled with product 16.

Die Siegelstation 3 verfügt über eine verschließbare Kammer, in der die Atmosphäre in den Mulden 14 vor dem Versiegeln optional zum Beispiel durch Gasspülen mit einem Austauschgas oder mit einem Gasgemisch ersetzt werden kann.The sealing station 3 has a sealable chamber in which the atmosphere in the wells 14 can be optionally replaced prior to sealing, for example by gas purging with a replacement gas or with a gas mixture.

Die Querschneideeinrichtung 4 ist als Stanze ausgebildet, die die Folienbahn 8 und die Deckelfolie 10 in einer Richtung quer zur Arbeitsrichtung R zwischen benachbarten Mulden 14 durchtrennt. Dabei arbeitet die Querschneideeinrichtung 4 derart, dass die Folienbahn 8 nicht über die gesamte Breite aufgetrennt wird, sondern zumindest in einem Randbereich nicht durchtrennt wird. Dies ermöglicht einen kontrollierten Weitertransport der Folienbahn 8 mit der Deckelfolie 10 mittels der Folienvorschubeinrichtung.The cross-cutting device 4 is designed as a punch which cuts through the film web 8 and the cover film 10 in a direction transverse to the working direction R between adjacent depressions 14. In this case, the cross-cutting device 4 operates such that the film web 8 is not separated over the entire width, but at least in an edge region is not severed. This allows a controlled further transport of the film web 8 with the lid film 10 by means of the film feed device.

Die Längsschneideeinrichtung 5 ist in der dargestellten Ausführungsform als eine Messeranordnung ausgebildet, mit der die Folienbahn 8 und die Deckelfolie 10 zwischen benachbarten Mulden 14 und am seitlichen Rand der Folie 8 durchtrennt werden, so dass hinter der Längsschneideeinrichtung 5 vereinzelte Verpackungen 17 vorliegen.In the illustrated embodiment, the longitudinal cutting device 5 is designed as a knife arrangement with which the film web 8 and the cover film 10 are severed between adjacent depressions 14 and at the lateral edge of the film 8, so that individual packages 17 are present behind the longitudinal cutting device 5.

Die Tiefziehverpackungsmaschine 1 verfügt ferner über eine Steuerung 18. Sie hat die Aufgabe, die in der Tiefziehverpackungsmaschine 1 ablaufenden Prozesse zu steuern und zu überwachen. Eine Anzeigevorrichtung 19 mit Bedienelementen 20 dient zum Visualisieren bzw. Beeinflussen der Prozessabläufe in der Tiefziehverpackungsmaschine 1 für bzw. durch einen Bediener.The thermoforming packaging machine 1 also has a controller 18. It has the task to control the processes running in the thermoforming packaging machine 1 processes and monitor. A display device 19 with operating elements 20 serves to visualize or influence the process sequences in the thermoforming packaging machine 1 for or by an operator.

Die generelle Arbeitsweise der Tiefziehverpackungsmaschine 1 wird im Folgenden kurz beschrieben.The general operation of the thermoforming packaging machine 1 will be briefly described below.

Die Folienbahn 8 wird von der Zufuhrrolle 7 abgezogen und entlang einer Einrichtung 12 zur Bahnkantensteuerung der einseitig angeordneten Klammerkette 11 zugeführt. Dabei sorgt die Einrichtung 12 dafür, dass eine Seite der Folienbahn 8 der Klammerkette 11 so zugeführt wird, dass die Klammerkette 11 die Folienbahn 8 sicher erfasst und sicher in der Transportrichtung R durch die Tiefziehverpackungsmaschine 1 intermittierend transportiert. Dabei wird die Folienbahn 8 in die Formstation 2 transportiert und in dieser werden durch Tiefziehen Mulden 14 in der Folienbahn 8 gebildet. Die Mulden 14 werden zusammen mit dem umgebenden Bereich der Folienbahn 8 in einem Hauptarbeitstakt zu der Einlegestrecke 15 weitertransportiert, in der sie mit Produkt 16 befüllt werden.The film web 8 is withdrawn from the feed roller 7 and fed along a device 12 for web edge control of the unilaterally arranged staple chain 11. The device 12 ensures that one side of the film web 8 of the staple chain 11 is fed so that the staple chain 11 securely detects the film web 8 and transported intermittently safely in the transport direction R through the thermoforming packaging machine 1. In this case, the film web 8 is transported to the forming station 2 and in this are formed by deep drawing troughs 14 in the film web 8. The troughs 14 are transported along with the surrounding area of the film web 8 in a main working cycle to the insertion path 15, in which they are filled with product 16.

Anschließend werden die befüllten Mulden 14 zusammen mit dem sie umgebenden Bereich der Folienbahn 8 in dem Hauptarbeitstakt durch die einseitige Folienvorschubeinrichtung in die Siegelstation 3 weitertransportiert. Die Deckelfolie 10 wird nach einem Ansiegelvorgang an die Folienbahn 8 mit der Vorschubbewegung der Folienbahn 8 weitertransportiert. Dabei wird die Deckelfolie 10 von dem Materialspeicher 9 unterstützt durch eine Zusatztransporteinrichtung 110 abgezogen Durch das Ansiegeln der Deckelfolie 10 auf die Mulden 14 entstehen verschlossene Verpackungen 17, die in den nachfolgenden Schneidungen 4 und 5 vereinzelt und mittels der Abfuhreinrichtung 13 aus der Tiefziehverpackungsmaschine 1 heraustransportiert werden. Anstatt der Quer- 4 und Längsschneidung 5 kann auch ein Komplettschnittwerkzeug, das Verpackungen 17 mit einem einzigen Schneidvorgang austrennt, vorgesehen sein.Subsequently, the filled wells 14 are transported together with the surrounding area of the film web 8 in the main working cycle by the one-sided film feeding device in the sealing station 3. The cover film 10 is transported on to the film web 8 with a feed operation of the film web 8 after a sealing operation. In this case, the cover sheet 10 is supported by the material storage 9 supported by an additional transport device 110 By sealing the lid film 10 on the wells 14 formed sealed packaging 17, which are separated in the following cuts 4 and 5 and transported out by means of the discharge device 13 from the thermoforming packaging machine 1 , Instead of the transverse 4 and longitudinal cutting 5 can also be a complete cutting tool that separates packages 17 with a single cutting process can be provided.

In Figur 2 ist eine Teilansicht des vorderen Bereichs einer Tiefziehverpackungsmaschine 1 von der Zufuhrrolle 7 bis zur Einlegestrecke 15 als schematische Draufsicht dargestellt. Die Tiefziehverpackungsmaschine 1 weist als Folienvorschubeinrichtung nur eine einzige Klammerkette 11 auf, die mittels einer Kettenführung 21 an einer ersten Seite 22 des Maschinenrahmens 6 angebracht ist. Die gegenüberliegende, zweite Seite 22' des Maschinenrahmens 6 ist mit einem Abstand D parallel zur ersten Seite 22 angeordnet und ist im Bereich der Formstation 2 bereichsweise ausgespart. Die Tiefziehverpackungsmaschine 1 lässt die Verarbeitung unterschiedlicher Folienbahnbreiten D1 oder D2 zu, da die Folienbahnen 8 oder 8' immer nur an der ersten Seite 22 des Maschinenrahmens 6 von der Klammerkette 11 erfasst und transportiert werden. Die Einrichtung 12 in Form einer Rolle (später auch mit 12 bezeichnet) zur Bahnkantensteuerung ist schwenkbar am Maschinenrahmen 6 angebracht. Ein Sensor 23 erfasst die Lage einer Seite der Folienbahn 8 und leitet die Information hierüber an die Steuerung 18 weiter. Die Steuerung 18 steuert mittels eines Servomotor 24 (siehe Figur 3) die Position der Rolle 12 derart, dass über ein Schwenken bzw. eine Veränderung der Lage der Rolle 12 die Seite 25 der Folienbahn 8 zur Klammerkette 11 eingestellt werden kann, um ein sicheres Erfassen der Folienbahn 8 durch die Klammerkette 11 zu gewährleisten. Es können auch Folienbahnen 8' mit einer anderen, zum Beispiel größeren Folienbahnbreite D2 eingesetzt werden, solange diese nicht breiter sind als der Abstand D der Seiten 22, 22' des Maschinenrahmens 6.In FIG. 2 is a partial view of the front portion of a thermoforming packaging machine 1 from the feed roller 7 to the insertion path 15 is shown as a schematic plan view. The thermoforming packaging machine 1 has as a film feeding device only a single staple chain 11, which is attached by means of a chain guide 21 on a first side 22 of the machine frame 6. The opposite, second side 22 'of the machine frame 6 is arranged at a distance D parallel to the first side 22 and is partially recessed in the region of the forming station 2. The thermoforming packaging machine 1 allows the processing of different film web widths D1 or D2, since the film webs 8 or 8 'always only on the first side 22 of the machine frame 6 are detected and transported by the staple chain 11. The device 12 in the form of a roller (later also referred to 12) for web edge control is pivotally mounted on the machine frame 6. A sensor 23 detects the position of one side of the film web 8 and forwards the information about this to the controller 18. The controller 18 controls by means of a servomotor 24 (see FIG. 3 ) The position of the roller 12 such that on a pivoting or a change in the position of the roller 12, the side 25 of the film web 8 to the staple chain 11 can be adjusted to ensure a secure detection of the film web 8 through the staple chain 11. It is also possible to use film webs 8 'with another, for example, larger film web width D2, as long as they are not wider than the distance D of the sides 22, 22' of the machine frame 6.

Direkt vor und nach der Formstation 2 sind direkt unterhalb der Folienbahn 8 leistenförmige Foliengegenlager 26 und 27 vorgesehen, die vertikal bewegbar ausgeführt sind. In ihrer oberen Position direkt unterhalb der Folienbahn 8 halten die Foliengegenlager 26, 27 die Folienbahn 8 nach dem Formvorgang in dieser oberen Position, damit während einer Bewegung eines Formwerkzeugunterteils 29 beim Öffnen der Formstation 2 die Folienbahn 8 nicht durch Adhäsion der Formmulden 14 am Formwerkzeugunterteil 29 mit nach unten gezogen werden und die Folienbahn 8 sich leichter bzw. schneller aus dem Formwerkzeugunterteil 29 lösen kann.Directly before and after the forming station 2 8 strip-shaped film counter bearings 26 and 27 are provided directly below the film web, which are designed to be vertically movable. In its upper position directly below the film web 8, the film counter bearings 26, 27 hold the film web 8 after the molding process in this upper position, so that during movement of a mold lower part 29 when opening the forming station 2, the film web 8 not by adhesion of the mold cavities 14 on the lower mold part 29th can be pulled down and the film web 8 can be easier or faster from the mold lower part 29 can solve.

In Transportrichtung R ausgerichtete, leistenförmige Folienauflagen 28 sind als Unterstützung der Folienbahn 8 zwischen bzw. neben den Spuren S von Packungsmulden 14 direkt unterhalb der Folienbahn 8 angeordnet.In the transport direction R aligned, strip-shaped film supports 28 are arranged as support of the film web 8 between or next to the tracks S of packing troughs 14 directly below the film web 8.

Figur 3 zeigt in einer schematischen Seitenansicht das Formwerkzeugunterteil 29 und ein Formwerkzeugoberteil 30 der Formstation 2. Die Foliengegenlager 26, 27 sind vertikal bewegbar und bleiben in ihrer oberen Position solange, bis das Formwerkzeugunterteil 28 wenigstens einen Teil seiner Hubbewegung nach unten ausgeführt hat. Die Foliengegenlager 26, 27 folgen dann dieser Hubbewegung, um eine Vorschubbewegung der geformten Mulden 14 bzw. der Folienbahn 8 möglichst schnell wieder freizugeben. Es sind Klemmeinrichtungen 34, 35 jeweils gegenüber den Foliengegenlagern 26, 27 auf der anderen Seite der Folienbahn 8 vorgesehen, die die Folienbahn 8 gegen die Foliengegenlager 26, 27 klemmen, wenn diese sich in ihrer oberen Position direkt unterhalb der Folienbahn 8 befinden. Dabei können die Klemmeinrichtungen 34, 35 mittels Membrane eine Klemmkraft gegen die Foliengegenlagern 26, 27 aufbringen oder die Foliengegenlager 26, 27 erzeugen eine Klemmkraft gegen statisch angebrachte Klemmeinrichtungen 34, 35, die sich direkt an der Oberseite der Folienbahn 8 befinden können. FIG. 3 shows in a schematic side view of the lower mold part 29 and a mold upper part 30 of the forming station 2. The film counter bearings 26, 27 are vertically movable and remain in their upper position until the mold base 28 has performed at least part of its lifting movement down. The film counter bearings 26, 27 then follow this lifting movement, in order to release a feed movement of the shaped depressions 14 or the film web 8 as quickly as possible. There are clamping devices 34, 35 in each case opposite the film counter bearings 26, 27 provided on the other side of the film web 8, the Film web 8 against the film backing 26, 27 clamp when they are in their upper position directly below the film web 8. In this case, the clamping devices 34, 35 by means of a membrane clamping force against the foil counter bearings 26, 27 apply or the film counter bearings 26, 27 generate a clamping force against statically mounted clamping devices 34, 35, which may be located directly on the top of the film web 8.

In der Figur 3 ist dargestellt, dass die gegenüber der Klammerkette 11 befindliche zweite Seite 22' des Maschinenrahmens 6 eine Aussparung 31 aufweist, um eine Bewegung der Formwerkzeuge 29, 30 in Richtung (aus der Zeichenebene hinaus) quer zur Transportrichtung R zu ermöglichen, um einen Werkzeugwechsel oder eine Wartung bzw. Reinigung der Werkzeuge 29, 30 zu erleichtern. Im Bereich eines Folieneinlaufs 32 ist eine erste Klammer 33 der Klammerkette 11 noch nicht soweit geschlossen, dass diese die Folienbahn 8 klemmt. Mit der Vorschubbewegung der Klammerkette 11 in Transportrichtung R schließt sich die Klammer 32 und erfasst die Folienbahn 8. Dabei sorgt die Bahnkantensteuerung mit dem Sensor 23 und dem Servomotor 24 dafür, dass die Lageveränderung der Rolle 12, vorzugsweise durch eine Schwenkbewegung um eine vertikale Achse, entsprechend die Lage der Seite 25 der Folienbahn 8 passend zum Erfassen durch die Klammer 33 steuert.In the FIG. 3 It is shown that the opposite of the staple chain 11 located second side 22 'of the machine frame 6 has a recess 31 to allow movement of the molds 29, 30 in the direction (out of the plane) transversely to the transport direction R to a tool change or a Maintenance or cleaning of the tools 29, 30 easier. In the region of a film inlet 32, a first clip 33 of the clip chain 11 is not yet closed to the extent that it clamps the film web 8. With the advancing movement of the staple chain 11 in the transport direction R, the clip 32 closes and detects the film web 8. The web edge control with the sensor 23 and the servo motor 24 ensures that the position change of the roller 12, preferably by a pivoting movement about a vertical axis, Accordingly, the position of the side 25 of the film web 8 suitable for detecting by the bracket 33 controls.

Claims (11)

  1. Thermo-forming packaging machine (1) with a machine frame (6) aligned in a direction of transport for a film web (8) comprising a first (22) and a second side (22'), and with a film advance device (11) for gripping one side (25) of the film web (8) and for transporting said film web (8), characterized in that said film advance device (11) is provided only on one side (22) of said machine frame (6).
  2. Thermo-forming packaging machine according to claim 1, characterized in that a device (12) for web edge guidance is provided for controlling the position of said film web (8) relative to said film advance device (11).
  3. Thermo-forming packaging machine according to claim 2, characterized in that said device (12) for web edge guidance comprises a roller pivotable relative to said film advance device (11).
  4. Thermo-forming packaging machine according to one of the preceding claims, characterized in that said thermo-forming packaging machine (1) comprises a film counter support (26, 27) for said film web (8) upstream and/or downstream of a workstation (2, 3).
  5. Thermo-forming packaging machine according to claim 4, characterized in that a clamping device (34, 35) is provided to clamp said film web (8) onto said film counter support (26, 27).
  6. Thermo-forming packaging machine according to one of the preceding claims, characterized in that film supports (28) are provided and said film supports (28) are provided between the tracks (S) of package trays (14) and/or at the unclamped film web edge of said film web (8) opposite to said film advance device (11).
  7. Thermo-forming packaging machine according to one of the preceding claims, characterized in that an auxiliary transport device (110) for transporting a top film (10) is provided upstream of a sealing station (3).
  8. Thermo-forming packaging machine according to claim 7, characterized in that said auxiliary transport device (110) comprises a clamping chain for transporting said top film (10) synchronously to said film web (8).
  9. Thermo-forming packaging machine according to claim 7 or 8, characterized in that said auxiliary transport device (110) comprises at least one rubber roller for transporting said top film (10) synchronously to said film web (8).
  10. Thermo-forming packaging machine according to one of the preceding claims, characterized in that said side (22') of said machine frame (6) located opposite to said film advance device (11) is open in the region of a workstation (2, 3, 4, 5) in order to be able to move tools (29, 30) horizontally transverse to said direction of transport (R).
  11. Thermo-forming packaging machine according to one of the preceding claims, characterized in that said film advance device (11) is designed as a clamping chain.
EP12778239.9A 2011-10-12 2012-10-11 Thermoforming packaging machine Active EP2766262B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011115881.6A DE102011115881B4 (en) 2011-10-12 2011-10-12 Thermoforming packaging machine with one-sided film feeding device
PCT/EP2012/004271 WO2013053484A1 (en) 2011-10-12 2012-10-11 Thermoforming packing machine

Publications (2)

Publication Number Publication Date
EP2766262A1 EP2766262A1 (en) 2014-08-20
EP2766262B1 true EP2766262B1 (en) 2015-01-07

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EP12778239.9A Active EP2766262B1 (en) 2011-10-12 2012-10-11 Thermoforming packaging machine

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US (1) US9321233B2 (en)
EP (1) EP2766262B1 (en)
CN (1) CN103930349B (en)
DE (1) DE102011115881B4 (en)
ES (1) ES2529643T3 (en)
IN (1) IN2014CN01888A (en)
WO (1) WO2013053484A1 (en)

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Publication number Publication date
IN2014CN01888A (en) 2015-05-29
CN103930349A (en) 2014-07-16
US9321233B2 (en) 2016-04-26
DE102011115881B4 (en) 2014-11-20
WO2013053484A1 (en) 2013-04-18
EP2766262A1 (en) 2014-08-20
US20140249007A1 (en) 2014-09-04
ES2529643T3 (en) 2015-02-24
DE102011115881A1 (en) 2013-04-18
CN103930349B (en) 2015-04-22

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