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EP3539883B1 - Deep draw packaging machine with film deflection - Google Patents

Deep draw packaging machine with film deflection Download PDF

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Publication number
EP3539883B1
EP3539883B1 EP18210759.9A EP18210759A EP3539883B1 EP 3539883 B1 EP3539883 B1 EP 3539883B1 EP 18210759 A EP18210759 A EP 18210759A EP 3539883 B1 EP3539883 B1 EP 3539883B1
Authority
EP
European Patent Office
Prior art keywords
station
packaging machine
lower film
thermoforming packaging
film web
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18210759.9A
Other languages
German (de)
French (fr)
Other versions
EP3539883A1 (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
Application filed by Multivac Sepp Haggenmueller GmbH and Co KG filed Critical Multivac Sepp Haggenmueller GmbH and Co KG
Publication of EP3539883A1 publication Critical patent/EP3539883A1/en
Application granted granted Critical
Publication of EP3539883B1 publication Critical patent/EP3539883B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12Feeding webs from rolls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B25/00Packaging other articles presenting special problems
    • B65B25/06Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B47/00Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • B65B47/02Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved with means for heating the material prior to forming
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B47/00Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • B65B47/04Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of mechanical pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B5/00Packaging individual articles in containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, jars
    • B65B5/02Machines characterised by incorporation of means for making the containers or receptacles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10Applying or generating heat or pressure or combinations thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/02Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for perforating, scoring, slitting, or applying code or date marks on material prior to packaging
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B65/00Details peculiar to packaging machines and not otherwise provided for; Arrangements of such details
    • B65B65/003Packaging lines, e.g. general layout
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing 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
    • B65B9/02Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04Enclosing 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
    • B65B9/045Enclosing 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 for single articles, e.g. tablets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00Registering, tensioning, smoothing or guiding webs
    • B65H23/04Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/32Arrangements for turning or reversing webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/41Winding, unwinding
    • B65H2301/417Handling or changing web rolls
    • B65H2301/41704Handling or changing web rolls involving layout of production or storage facility
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00Means using fluid
    • B65H2406/30Suction means
    • B65H2406/35Other elements with suction surface, e.g. plate or wall
    • B65H2406/351Other elements with suction surface, e.g. plate or wall facing the surface of the handled material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/10Handled articles or webs
    • B65H2701/17Nature of material
    • B65H2701/175Plastic
    • B65H2701/1752Polymer film
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/10Handled articles or webs
    • B65H2701/19Specific article or web
    • B65H2701/191Bags, sachets and pouches or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/10Handled articles or webs
    • B65H2701/19Specific article or web
    • B65H2701/1944Wrapping or packing material

Definitions

  • the present invention relates to the field of thermoforming packaging machines.
  • the invention relates to a thermoforming packaging machine for packaging food products.
  • a deep-drawing packaging machine in which a preheating station, a forming station, an insertion section, a sealing station and a cutting station are arranged one behind the other along a linear production direction.
  • a lower film web is drawn off from a supply roll provided collinearly in front of the preheating station on a film holder with respect to the production direction and then conveyed along the production direction by means of a transport device and fed to the individual processing stations.
  • packaging troughs are formed in the lower film web by means of deep-drawing at the forming station.
  • thermoforming packaging machine is the subject of the WO2017 / 002915A1 .
  • FR2887864 describes a device for feeding packaging material to a packaging machine.
  • thermoforming packaging machine The disadvantage of the known thermoforming packaging machine is the large amount of space required along the direction of production. In order to avoid frequent changes, it would in principle also be advantageous to use lower film supply rolls with a lot of material and an associated large diameter. However, this further increases the space requirement along the production direction.
  • the space requirement along the production directions is particularly relevant for many applications, since further devices are often to be arranged in front of the actual thermoforming packaging machine with regard to the production direction. For example, a slicing device for food to be packaged can be arranged in front of the thermoforming packaging machine.
  • the sliced food for example slices of sausage or cheese
  • thermoforming packaging machine which can be set up in a space-saving manner.
  • thermoforming packaging machine defines a preferably linear production direction and comprises a film receptacle for receiving a lower film supply roll, a pretreatment station, a forming station, an insertion section and a sealing station.
  • the pre-treatment station is configured for pre-treatment of the lower film web.
  • the forming station is arranged downstream of the pretreatment station with respect to the direction of production and comprises a forming tool for forming depressions in the lower film web by deep drawing.
  • the molding tool can in particular comprise an upper molding tool part and a lower molding tool part that is movable relative thereto, between which the lower film web is deep-drawn.
  • the infeed line is arranged downstream of the forming station with regard to the direction of production.
  • the sealing station is arranged downstream of the insertion section with regard to the direction of production and comprises a sealing tool for closing the troughs with an upper film.
  • the sealing tool can comprise an upper sealing tool part and a lower sealing tool part which is movable relative thereto.
  • the upper film can be sealed to the lower film, for example by means of ultrasonic welding, by heat welding or in some other way.
  • the thermoforming packaging machine further comprises a transport device which is designed to convey the lower film web along the production direction through the pretreatment station, further to the forming station, even further to the insertion section and finally to the sealing station.
  • the transport device is preferably operated in a clocked manner.
  • the thermoforming packaging machine also comprises a deflection unit which is configured to deflect the lower film web by an angle with respect to a vertical axis before it reaches the pretreatment station.
  • the lower film web is deflected by the deflection unit after it has left the film receptacle and before it reaches the pretreatment station.
  • the deflection unit enables the film holder to be positioned more freely.
  • the film holder no longer has to be arranged linearly in front of the individual stations of the thermoforming packaging machine with respect to the production direction. In this way, the overall length of the thermoforming packaging machine can be reduced along the production direction.
  • the film holder can be positioned so that it is more accessible for changing the lower film supply roll.
  • the deflection unit is arranged at least partially below the pretreatment station. This allows the space requirement along the production direction to be further reduced.
  • the deflection unit uses installation space under the pretreatment station and thus does not contribute to the length of the thermoforming packaging machine, or only to a small extent.
  • the deflection unit is protected under the pretreatment station and stowed away compactly.
  • the film receptacle is preferably provided offset with respect to the direction of production.
  • the film holder can optionally be offset to the left or the right side with respect to the direction of production.
  • providing the film receptacle in an offset manner also improves the accessibility of the thermoforming packaging machine at its front end.
  • the deflection unit can be configured to deflect the lower film web with respect to the vertical axis by an angle between 60 ° and 120 °, an angle between 80 ° and 100 ° or an angle of at least substantially 90 °.
  • the film receptacle can thus be arranged in such a way that the lower film web is pulled off the lower film supply roll essentially in a direction perpendicular to the production direction.
  • further deflection units to be provided upstream of the deflection unit provided below the pretreatment station, so that the positioning of the film receptacle can essentially be freely adapted to the respective space requirements.
  • the deflection unit is preferably configured such that a running direction of the lower film web after deflection by the deflection unit is at least in projection from above onto the thermoforming packaging machine parallel or antiparallel to the production direction.
  • the lower film web can thus be prepared in a simple manner for introduction into the production sequence of the thermoforming packaging machine.
  • the thermoforming packaging machine can also include an introduction device which is designed to introduce the lower film web into the production sequence of the thermoforming packaging machine and / or into the pretreatment station after it has been deflected by the deflecting unit.
  • the infeed device can transfer the lower film web to the transport device at a suitable height and in a suitable orientation, so that a transport device can be used without further ado, as is known from known thermoforming packaging machines with film pick-up arranged linearly in front of the production direction.
  • the introduction device preferably comprises one or more, in particular horizontally oriented, deflection rollers. After the deflection by the deflection unit, the lower film web can be guided to a suitable height via the deflection rollers in order to be fed to the pretreatment station. Although the deflection unit is at least partially below the pretreatment station, the lower film web can thus be fed to the pretreatment station along the production direction.
  • the inlet device can be arranged at least partially below the pretreatment station. In this way, the installation space below the pretreatment station can be used even further.
  • the thermoforming packaging machine comprises a machine frame on which the pretreatment station, the forming station, the insertion section and the sealing station are arranged one behind the other along the production direction.
  • the machine frame has a recess area below the pretreatment station in which the deflection unit is at least partially arranged.
  • the deflection unit is preferably provided completely in the recess area of the machine frame. But it would also be conceivable that the deflection unit protrudes laterally or forwards beyond the machine frame.
  • the machine frame can have a boom which protrudes against the production direction and on which the pretreatment station is arranged.
  • the deflection unit can be arranged at least partially below the boom. By providing an arm of the machine frame, the space above the deflection unit can be used to attach the pretreatment station.
  • the introduction device is preferably attached to the machine frame. In this way, the inlet device can be integrated into the thermoforming packaging machine in a simple and space-saving manner.
  • the pretreatment station can comprise, for example, a preheating station for preheating the lower film web before it reaches the forming station.
  • a preheating station can be relatively flat compared to the forming station or the sealing station, so that the deflection unit can be provided under the preheating station without having to lift the machine frame in the area of the preheating station.
  • the pretreatment station can comprise a perforation or slitting unit which is configured to perforate or slit the lower film web.
  • the perforated or slit unit can be designed to make holes or slots in the lower film web, which can later be used in the sealing station to evacuate the packaging before sealing and / or to introduce a protective gas atmosphere into the packaging, for example to increase the shelf life of the to increase products to be packaged.
  • the perforated or slotted unit is preferably integrated into the machine frame and / or attached to it.
  • the perforated or slit unit can be designed flat in comparison to the forming station or the sealing station so that the deflection unit can be provided under the perforated or slotted unit without increasing the overall height of the thermoforming packaging machine in the area of the perforated or slotted unit.
  • the perforation or slitting unit preferably comprises a waste device which is configured to collect and / or discharge film residues produced during the perforation or slitting of the lower film web. In this way, it can be prevented that film residues produced during the perforation or slitting of the lower film web fall onto the lower film web in the area of the deflection unit.
  • the perforated or slit unit preferably comprises a suction device for sucking off film residues produced during the perforation or slitting of the lower film web. In this way, the film residue can be removed automatically and reliably.
  • Fig. 1 shows a top view of a thermoforming packaging machine 1 according to one embodiment.
  • the thermoforming packaging machine 1 comprises a machine frame 3 on which a pretreatment station 5, a forming station 7, an insertion section 9, a sealing station 11 and a cutting station 13 are arranged linearly one behind the other along a production direction P.
  • a transport device 15 is also provided, which is designed to feed a lower film web 17 along the transport direction P through the pretreatment station 5 on to the forming station 7, even further to the insertion section 9, even further to the sealing station 11 and finally to the cutting station 13 promote.
  • Fig. 2 shows a schematic side view of the thermoforming packaging machine 1 in viewing direction A (see Fig. 1 ).
  • the transport device 15 comprises clamp chains 19 which are arranged on both sides of the lower film web 17 and which grip the lower film web 17 on both sides by means of clamp elements 21.
  • the lower film web 17 is conveyed along the production direction P by means of a drive device 23 for the clamp chains 19.
  • the clamp chains 19 are guided on both sides between the upper and lower guide rails of the machine frame 3.
  • the pretreatment station 5 is designed to pretreat the lower film web 17 before it reaches the forming station 7.
  • the forming station 7 arranged downstream of the pretreatment station 5 with respect to the production direction P comprises a forming tool 25 for forming depressions 27 in the lower film web 17 by deep drawing.
  • the molding tool 25 can in particular have an upper molding tool part and a lower molding tool part, which are movable relative to one another in a vertical direction for deep-drawing the depressions 27.
  • the depressions 27 formed in the lower film web 17 are filled with products 29 to be packaged.
  • the troughs 27 can be filled automatically or manually.
  • the products 29 are conveyed from a processing station 33, such as a food cutting device, to the insertion section 9 by means of a feed belt 31, which runs above the forming station 7 parallel to the production direction P.
  • a processing station 33 such as a food cutting device
  • the filled troughs 27 are closed with an upper film 35.
  • the sealing station 11 comprises a sealing tool 37, which preferably comprises an upper sealing tool part and a lower sealing tool part movable along a vertical direction perpendicular thereto.
  • the packs are separated from the film composite in the cutting station 13, so that the finished and separated packagings 39 can then be transported away by means of a conveying device 41.
  • the cutting station 13 comprises a cross-sectional device 43 and a longitudinal cutting device 45.
  • a film receptacle 47 for receiving a lower film supply roll 49 is arranged laterally offset with respect to the production direction P of the thermoforming packaging machine 1.
  • the film receptacle 47 is arranged offset by 90 ° with respect to the production direction P.
  • the removal direction E along which the lower film web 17 leaves the lower film supply roll 49, is perpendicular to the production direction P.
  • the angle between the removal direction E and the production direction P could also deviate from 90 °.
  • the laterally offset arrangement of the film receptacle 47 saves installation space along the production direction P. In the application example shown, this makes it possible to move the processing station 33 closer to the start of the thermoforming packaging machine 1.
  • the film receptacle 47 can be arranged in such a way that it is particularly easily accessible for changing the lower film supply roll 49.
  • a deflection unit 51 is provided.
  • the deflection unit 51 is configured to deflect the lower film web 17 by an angle ⁇ with respect to a vertical axis V before it reaches the pretreatment station 5.
  • the lower film web 17 is deflected by the deflection unit 51 from the removal direction E into an intermediate direction Z, which is antiparallel to the production direction P.
  • the deflection unit 51 is at least partially located under the pretreatment station 5, details of the deflection are shown in FIG Fig. 1 not visible. In Fig. 3 Therefore, the deflection of the lower film web 17 by the deflection unit 51 is shown schematically in plan view, adjacent elements of the thermoforming packaging machine 1 not being shown.
  • the lower film web 17 reaches the deflection unit 51 along the removal direction E.
  • the lower film web 17 is then with respect to the vertical axis V (in Fig. 3 perpendicular to the plane of the drawing) by the angle a in the intermediate direction Z, which is antiparallel to the production direction P in the embodiment shown.
  • the lower film web 17 is fed to the deflection unit 51 along the removal direction E, along which the lower film web 17 leaves the film receptacle 47.
  • this is not absolutely necessary. It would also be conceivable, for example, for further deflection units to be provided between the film receptacle 47 and the deflection unit 51 in order to be able to position the film receptacle 47 essentially completely freely.
  • the lower film web 17 is preferably deflected by the deflection unit 51 by essentially 90 °.
  • the deflection unit 51 deflects the lower film web 17 by another angle, for example by an angle between 60 ° and 120 ° or an angle between 80 ° and 100 °.
  • the deflecting edge 53 of the deflecting unit 51 can, for example, as in FIG Fig. 4 shown, be formed by a cylindrical body 55 around which the lower film web 17 is deflected.
  • the cylindrical body 55 preferably comprises compressed air openings 57 through which compressed air escapes during operation, so that an air cushion is formed between the cylindrical body 55 and the lower film web 17.
  • the lower film web 17 can thus be deflected with reduced friction.
  • the machine frame 3 in the embodiment shown comprises a recess area 59 below the pretreatment station 5, in which the deflection unit 51 is arranged.
  • the recess area 59 is formed in that the machine frame 3 has an arm 61 which protrudes counter to the production direction P and on which the pretreatment station 5 is arranged.
  • the deflection unit 51 is provided in the recess area 59 and is located at least partially below the pretreatment station 5. In this way, the installation space under the pretreatment station 5 is used to implement the deflection of the lower film web 17. The extension length of the thermoforming packaging machine 1 along the production direction P can thus be reduced.
  • the deflection unit 51 is provided completely under the boom 61 of the machine frame 3 and under the pretreatment station 5.
  • the deflection unit 51 protrude laterally or along the production direction P over the boom 61 and / or over the pretreatment station 5.
  • the deflection unit 51 is preferably at least halfway, at least 75% or completely below the pretreatment station 5 or the boom 61.
  • the thermoforming packaging machine 1 furthermore comprises an inlet device 63 which is designed to feed the lower film web 17 after it has been deflected by the deflection unit 51 into the Initiate pretreatment station 5.
  • the introduction device 63 does not necessarily have to convey the lower film web 17 into the pretreatment station 5 itself. It is sufficient if it aligns the lower film web 17 in such a way that it is introduced into the normal production sequence of the thermoforming packaging machine 1, that is to say is picked up by the transport device 15 for conveying.
  • the inlet device 63 comprises a plurality of horizontally aligned deflection rollers 65.
  • the inlet device 63 is preferably also at least partially arranged under the pretreatment station 5 and / or the boom 61 in order to save further installation space.
  • the introduction device 63, in particular its deflection rollers 65 can be attached to the machine frame 3.
  • the lower film web 17 in Fig. 2 leaves the deflection device 51 along a direction which is antiparallel to the production direction P at least in projection from above onto the thermoforming packaging machine 1.
  • the lower film web 17 it would also be conceivable for the lower film web 17 to leave the deflection unit 51 along a direction which, at least in projection from above onto the thermoforming packaging machine 1, runs parallel to the production direction P.
  • This case is in Fig. 2 shown with dashed lines for the lower film web 17, the corresponding deflection rollers of the inlet device 63 not being shown for this variant for the sake of clarity.
  • the pretreatment station 5 comprises a preheating station 67 for preheating the lower film web 17 before it reaches the forming station 7 in order to facilitate deep-drawing through the forming station 7.
  • the pretreatment station 5 comprises a perforation or slit unit 69 for perforating or slitting the lower film web 17. Through slits or holes made by means of the perforation or slitting unit 69, gas can be extracted from the packaging in the sealing station 11 before the packaging is sealed or a protective gas atmosphere can be introduced so that the products can be packaged in a vacuum or protective gas atmosphere.
  • the illustrated perforated or slit unit 69 comprises a suction device 71 for sucking off film residues produced during the perforation or slitting of the lower film web 17, so that they cannot fall onto the lower film web 17 in the area of the deflection unit 51.
  • suctioning off the film residues is not absolutely necessary, and a differently configured waste device for collecting and / or removing film residues resulting from the perforation or slitting of the lower film web 17 could also be provided.
  • a sheet for catching film residues could simply be attached between the pretreatment station 5 and the deflection unit 51.
  • the pretreatment station 5 only comprises either a preheating station 67 or a perforation or slot unit 69, but not both.
  • the hole or slot unit 69 could be integrated in the forming station 7 or omitted entirely.
  • a hole or slot unit 69 or a preheating station 67 are particularly suitable for providing the deflection unit 51 underneath, since they have a relatively low overall height compared to, for example, the forming station 7 or the sealing station 11.
  • the pretreatment station 5 alternatively or additionally comprises another machine unit for pretreating the lower film web 17.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Description

Die vorliegende Erfindung betrifft das Gebiet der Tiefziehverpackungsmaschinen. Insbesondere betrifft die Erfindung eine Tiefziehverpackungsmaschine zum Verpacken von Lebensmittelprodukten.The present invention relates to the field of thermoforming packaging machines. In particular, the invention relates to a thermoforming packaging machine for packaging food products.

Beispielweise aus der DE 10 2012 018 974 A1 ist eine Tiefziehverpackungsmaschine bekannt, bei der eine Vorheizstation, eine Formstation, eine Einlegestrecke, eine Siegelstation und eine Schneidstation entlang einer linearen Produktionsrichtung hintereinander angeordnet sind. Eine Unterfolienbahn wird von einer bezüglich der Produktionsrichtung kollinear vor der Vorheizstation an einer Folienaufnahme vorgesehenen Vorratsrolle abgezogen und dann mittels einer Transporteinrichtung entlang der Produktionsrichtung gefördert und den einzelnen Bearbeitungsstationen zugeführt. Nachdem die Unterfolienbahn an der Vorheizstation zum Erleichtern eines Tiefziehvorgangs vorgeheizt wurde, werden an der Formstation mittels Tiefziehens Verpackungsmulden in der Unterfolienbahn ausgeformt. In der Einlegestrecke werden die Verpackungsmulden mit zu verpackenden Produkten befüllt. Die befüllten Verpackungsmulden werden anschließend in der Siegelstation mit einer Oberfolie verschlossen. An der Schneidstation werden die verschlossenen Verpackungen aus dem Folienverbund gelöst, so dass sie anschließend separat abtransportiert werden können Eine weitere Tiefziehverpackungsmaschine ist Gegenstand der WO2017/002915A1 . FR2887864 beschreibt eine Vorrichtung zum Zuführen von Verpackungsmaterial zu einer Verpackungsmaschine.For example from the DE 10 2012 018 974 A1 a deep-drawing packaging machine is known in which a preheating station, a forming station, an insertion section, a sealing station and a cutting station are arranged one behind the other along a linear production direction. A lower film web is drawn off from a supply roll provided collinearly in front of the preheating station on a film holder with respect to the production direction and then conveyed along the production direction by means of a transport device and fed to the individual processing stations. After the lower film web has been preheated at the preheating station to facilitate a deep-drawing process, packaging troughs are formed in the lower film web by means of deep-drawing at the forming station. In the infeed section, the packaging trays are filled with products to be packaged. The filled packaging trays are then closed with an upper film in the sealing station. At the cutting station, the closed packagings are released from the film composite so that they can then be transported away separately. Another thermoforming packaging machine is the subject of the WO2017 / 002915A1 . FR2887864 describes a device for feeding packaging material to a packaging machine.

Nachteilig an der bekannten Tiefziehverpackungsmaschine ist der hohe Platzbedarf entlang der Produktionsrichtung. Um ein häufiges Wechseln zu vermeiden, wäre es prinzipiell zudem vorteilhaft, Unterfolien-Vorratsrollen mit viel Material und einem damit einhergehenden großen Durchmesser zu verwenden. Hierdurch erhöht sich der Platzbedarf entlang der Produktionsrichtung jedoch weiter. Der Platzbedarf entlang der Produktionsrichtungen ist für viele Anwendungen besonders relevant, da oftmals bezüglich der Produktionsrichtung vor der eigentlichen Tiefziehverpackungsmaschine weitere Vorrichtungen angeordnet werden sollen. Beispielweise kann eine Aufschneidevorrichtung für zu verpackende Lebensmittel vor der Tiefziehverpackungsmaschine angeordnet werden. Die aufgeschnittenen Lebensmittel, beispielsweise Wurst- oder Käsescheiben, können dann mittels eines parallel zur Produktionsrichtung über die Formstation verlaufenden Zuführbands, wie es beispielsweise aus der EP 3 202 671 A2 bekannt ist, zu der Einlegestrecke transportiert werden.The disadvantage of the known thermoforming packaging machine is the large amount of space required along the direction of production. In order to avoid frequent changes, it would in principle also be advantageous to use lower film supply rolls with a lot of material and an associated large diameter. However, this further increases the space requirement along the production direction. The space requirement along the production directions is particularly relevant for many applications, since further devices are often to be arranged in front of the actual thermoforming packaging machine with regard to the production direction. For example, a slicing device for food to be packaged can be arranged in front of the thermoforming packaging machine. The sliced food, for example slices of sausage or cheese, can then be transported over the forming station by means of a feed belt running parallel to the direction of production, as is shown, for example, in FIG EP 3 202 671 A2 is known to be transported to the insertion line.

Es ist Aufgabe der Erfindung, eine Tiefziehverpackungsmaschine bereitzustellen, die platzsparend aufstellbar ist.It is the object of the invention to provide a thermoforming packaging machine which can be set up in a space-saving manner.

Diese Aufgabe wird durch den Gegenstand von Anspruch 1 gelöst. Die abhängigen Ansprüche geben vorteilhafte Ausführungsformen der Erfindung an.This object is achieved by the subject matter of claim 1. The dependent claims specify advantageous embodiments of the invention.

Eine erfindungsgemäße Tiefziehverpackungsmaschine definiert eine vorzugsweise lineare Produktionsrichtung und umfasst eine Folienaufnahme zum Aufnehmen einer Unterfolien-Vorratsrolle, eine Vorbehandlungsstation, eine Formstation, eine Einlegestrecke und eine Siegelstation. Die Vorbehandlungsstation ist zum Vorbehandeln der Unterfolienbahn konfiguriert. Die Formstation ist der Vorbehandlungsstation bezüglich der Produktionsrichtung nachgeordnet und umfasst ein Formwerkzeug zum Ausbilden von Mulden in der Unterfolienbahn durch Tiefziehen. Das Formwerkzeug kann insbesondere ein Formwerkzeugoberteil und ein relativ dazu bewegliches Formwerkzeugunterteil umfassen, zwischen denen die Unterfolienbahn tiefgezogen wird. Die Einlegestrecke ist der Formstation bezüglich der Produktionsrichtung nachgeordnet. In der Einlegestrecke werden die in der Unterfolienbahn ausgebildeten Mulden mit zu verpackenden Produkten befüllt. Die Siegelstation ist der Einlegestrecke bezüglich der Produktionsrichtung nachgeordnet und umfasst ein Siegelwerkzeug zum Verschließen der Mulden mit einer Oberfolie. Insbesondere kann das Siegelwerkzeug ein Siegelwerkzeugoberteil und ein relativ dazu bewegliches Siegelwerkzeugunterteil umfassen. Die Oberfolie kann beispielsweise mittels Ultraschallschweißens, durch Wärmeverschweißen oder anderweitig an die Unterfolie angesiegelt werden. Die Tiefziehverpackungsmaschine umfasst des Weiteren eine Transporteinrichtung, die dazu ausgelegt ist, die Unterfolienbahn entlang der Produktionsrichtung durch die Vorbehandlungsstation, weiter zu der Formstation, noch weiter zu der Einlegestrecke und schließlich zu der Siegelstation zu fördern. Die Transporteinrichtung wird vorzugsweise getaktet betrieben.A thermoforming packaging machine according to the invention defines a preferably linear production direction and comprises a film receptacle for receiving a lower film supply roll, a pretreatment station, a forming station, an insertion section and a sealing station. The pre-treatment station is configured for pre-treatment of the lower film web. The forming station is arranged downstream of the pretreatment station with respect to the direction of production and comprises a forming tool for forming depressions in the lower film web by deep drawing. The molding tool can in particular comprise an upper molding tool part and a lower molding tool part that is movable relative thereto, between which the lower film web is deep-drawn. The infeed line is arranged downstream of the forming station with regard to the direction of production. In the insertion section, the depressions formed in the lower web of film are filled with products to be packaged. The sealing station is arranged downstream of the insertion section with regard to the direction of production and comprises a sealing tool for closing the troughs with an upper film. In particular, the sealing tool can comprise an upper sealing tool part and a lower sealing tool part which is movable relative thereto. The upper film can be sealed to the lower film, for example by means of ultrasonic welding, by heat welding or in some other way. The thermoforming packaging machine further comprises a transport device which is designed to convey the lower film web along the production direction through the pretreatment station, further to the forming station, even further to the insertion section and finally to the sealing station. The transport device is preferably operated in a clocked manner.

Die Tiefziehverpackungsmaschine umfasst zudem eine Umlenkeinheit, die dazu konfiguriert ist, die Unterfolienbahn vor Erreichen der Vorbehandlungsstation bezüglich einer vertikalen Achse um einen Winkel umzulenken. Die Unterfolienbahn wird durch die Umlenkeinheit umgelenkt, nachdem sie die Folienaufnahme verlassen hat und bevor sie die Vorbehandlungsstation erreicht. Die Umlenkeinheit ermöglicht es, die Folienaufnahme freier zu positionieren. Insbesondere muss die Folienaufnahme nicht mehr bezüglich der Produktionsrichtung linear vor den einzelnen Stationen der Tiefziehverpackungsmaschine angeordnet sein. So lässt sich die Gesamtlänge der Tiefziehverpackungsmaschine entlang der Produktionsrichtung verringern. Zudem kann die Folienaufnahme so positioniert werden, dass sie zum Wechseln der Unterfolien-Vorratsrolle besser zugänglich ist.The thermoforming packaging machine also comprises a deflection unit which is configured to deflect the lower film web by an angle with respect to a vertical axis before it reaches the pretreatment station. The lower film web is deflected by the deflection unit after it has left the film receptacle and before it reaches the pretreatment station. The deflection unit enables the film holder to be positioned more freely. In particular, the film holder no longer has to be arranged linearly in front of the individual stations of the thermoforming packaging machine with respect to the production direction. In this way, the overall length of the thermoforming packaging machine can be reduced along the production direction. In addition, the film holder can be positioned so that it is more accessible for changing the lower film supply roll.

Die Umlenkeinheit ist zumindest teilweise unterhalb der Vorbehandlungsstation angeordnet. Hierdurch lässt sich der Platzbedarf entlang der Produktionsrichtung weiter verringern. Die Umlenkeinheit nutzt Bauraum unter der Vorbehandlungsstation und trägt somit nicht oder nur in geringem Maße zu der Längenerstreckung der Tiefziehverpackungsmaschine bei. Die Umlenkeinheit ist unter der Vorbehandlungsstation geschützt und kompakt verstaut.The deflection unit is arranged at least partially below the pretreatment station. This allows the space requirement along the production direction to be further reduced. The deflection unit uses installation space under the pretreatment station and thus does not contribute to the length of the thermoforming packaging machine, or only to a small extent. The deflection unit is protected under the pretreatment station and stowed away compactly.

Vorzugsweise ist die Folienaufnahme versetzt zu der Produktionsrichtung vorgesehen. Die Folienaufnahme kann bezüglich der Produktionsrichtung wahlweise auf die linke Seite oder die rechte Seite versetzt sein. Außer dem verringerten Platzbedarf in Produktionsrichtung wird durch ein versetztes Vorsehen der Folienaufnahme auch die Zugänglichkeit der Tiefziehverpackungsmaschine an ihrem Stirnende verbessert.The film receptacle is preferably provided offset with respect to the direction of production. The film holder can optionally be offset to the left or the right side with respect to the direction of production. In addition to the reduced space requirement in the direction of production, providing the film receptacle in an offset manner also improves the accessibility of the thermoforming packaging machine at its front end.

Die Umlenkeinheit kann dazu konfiguriert sein, die Unterfolienbahn bezüglich der vertikalen Achse um einen Winkel zwischen 60° und 120°, einen Winkel zwischen 80° und 100° oder einen Winkel von zumindest im Wesentlichen 90° umzulenken. Somit kann die Folienaufnahme so angeordnet sein, dass die Unterfolienbahn im Wesentlichen entlang einer senkrecht zur Produktionsrichtung stehenden Richtung von der Unterfolien-Vorratsrolle abgezogen wird. Es wäre aber auch denkbar, dass der unterhalb der Vorbehandlungsstation vorgesehenen Umlenkeinheit vorgeordnet weitere Umlenkeinheiten vorgesehen sind, so dass die Positionierung der Folienaufnahme im Wesentlichen frei an die jeweiligen Platzvorgaben angepasst werden kann.The deflection unit can be configured to deflect the lower film web with respect to the vertical axis by an angle between 60 ° and 120 °, an angle between 80 ° and 100 ° or an angle of at least substantially 90 °. The film receptacle can thus be arranged in such a way that the lower film web is pulled off the lower film supply roll essentially in a direction perpendicular to the production direction. However, it would also be conceivable for further deflection units to be provided upstream of the deflection unit provided below the pretreatment station, so that the positioning of the film receptacle can essentially be freely adapted to the respective space requirements.

Vorzugsweise ist die Umlenkeinheit so konfiguriert, dass eine Laufrichtung der Unterfolienbahn nach dem Umlenken durch die Umlenkeinheit zumindest in Projektion von oben auf die Tiefziehverpackungsmaschine parallel oder antiparallel zu der Produktionsrichtung ist. Somit kann die Unterfolienbahn auf einfache Art und Weise zum Einbringen in den Produktionsablauf der Tiefziehverpackungsmaschine vorbereitet werden.The deflection unit is preferably configured such that a running direction of the lower film web after deflection by the deflection unit is at least in projection from above onto the thermoforming packaging machine parallel or antiparallel to the production direction. The lower film web can thus be prepared in a simple manner for introduction into the production sequence of the thermoforming packaging machine.

Die Tiefziehverpackungsmaschine kann zudem eine Einleiteinrichtung umfassen, die dazu ausgelegt ist, die Unterfolienbahn nach dem Umlenken durch die Umlenkeinheit in den Produktionsablauf der Tiefziehverpackungsmaschine und/oder in die Vorbehandlungsstation einzuleiten. Die Einleiteinrichtung kann die Unterfolienbahn auf geeigneter Höhe und in geeigneter Orientierung an die Transporteinrichtung übergeben, so dass ohne Weiteres auf eine Transporteinrichtung zurückgegriffen werden kann, wie sie aus bekannten Tiefziehverpackungsmaschinen mit bezüglich der Produktionsrichtung linear vorgeordneter Folienaufnahme bekannt sind.The thermoforming packaging machine can also include an introduction device which is designed to introduce the lower film web into the production sequence of the thermoforming packaging machine and / or into the pretreatment station after it has been deflected by the deflecting unit. The infeed device can transfer the lower film web to the transport device at a suitable height and in a suitable orientation, so that a transport device can be used without further ado, as is known from known thermoforming packaging machines with film pick-up arranged linearly in front of the production direction.

Vorzugsweise umfasst die Einleiteinrichtung eine oder mehrere, insbesondere horizontal ausgerichtete Umlenkrollen. Über die Umlenkrollen kann die Unterfolienbahn nach dem Umlenken durch die Umlenkeinheit auf eine geeignete Höhe geführt werden, um der Vorbehandlungsstation zugeführt zu werden. Obwohl die Umlenkeinheit zumindest teilweise unterhalb der Vorbehandlungsstation vorliegt, kann die Unterfolienbahn so der Vorbehandlungsstation entlang der Produktionsrichtung zugeführt werden.The introduction device preferably comprises one or more, in particular horizontally oriented, deflection rollers. After the deflection by the deflection unit, the lower film web can be guided to a suitable height via the deflection rollers in order to be fed to the pretreatment station. Although the deflection unit is at least partially below the pretreatment station, the lower film web can thus be fed to the pretreatment station along the production direction.

Die Einleiteinrichtung kann zumindest teilweise unterhalb der Vorbehandlungsstation angeordnet sein. So kann der Bauraum unterhalb der Vorbehandlungsstation noch weiter ausgenutzt werden.The inlet device can be arranged at least partially below the pretreatment station. In this way, the installation space below the pretreatment station can be used even further.

Die Tiefziehverpackungsmaschine umfasst ein Maschinengestell, an dem die Vorbehandlungsstation, die Formstation, die Einlegestrecke und die Siegelstation entlang der Produktionsrichtung hintereinander angeordnet sind. Das Maschinengestell weist unterhalb der Vorbehandlungsstation einen Aussparungsbereich auf, in dem die Umlenkeinheit zumindest teilweise angeordnet ist. Vorzugsweise ist die Umlenkeinheit vollständig in dem Aussparungsbereich des Maschinengestells vorgesehen. Es wäre aber auch denkbar, dass die Umlenkeinheit seitlich oder nach vorne über das Maschinengestell hinausragt.The thermoforming packaging machine comprises a machine frame on which the pretreatment station, the forming station, the insertion section and the sealing station are arranged one behind the other along the production direction. The machine frame has a recess area below the pretreatment station in which the deflection unit is at least partially arranged. The deflection unit is preferably provided completely in the recess area of the machine frame. But it would also be conceivable that the deflection unit protrudes laterally or forwards beyond the machine frame.

Das Maschinengestell kann einen entgegen der Produktionsrichtung überstehend ausgebildeten Ausleger aufweisen, an dem die Vorbehandlungsstation angeordnet ist. Die Umlenkeinheit kann zumindest teilweise unterhalb des Auslegers angeordnet sein. Durch das Vorsehen eines Auslegers des Maschinengestells lässt sich der Raum über der Umlenkeinheit zum Anbringen der Vorbehandlungsstation nutzen.The machine frame can have a boom which protrudes against the production direction and on which the pretreatment station is arranged. The deflection unit can be arranged at least partially below the boom. By providing an arm of the machine frame, the space above the deflection unit can be used to attach the pretreatment station.

Vorzugsweise ist die Einleiteinrichtung an dem Maschinengestell angebracht. So kann die Einleiteinrichtung einfach und platzsparend in die Tiefziehverpackungsmaschine integriert werden.The introduction device is preferably attached to the machine frame. In this way, the inlet device can be integrated into the thermoforming packaging machine in a simple and space-saving manner.

Die Vorbehandlungsstation kann beispielsweise eine Vorheizstation zum Vorheizen der Unterfolienbahn vor Erreichen der Formstation umfassen. Eine solche Vorheizstation kann im Vergleich zu der Formstation oder der Siegelstation relativ flach ausgebildet sein, so dass ein Vorsehen der Umlenkeinheit unter der Vorheizstation möglich ist, ohne das Maschinengestell im Bereich der Vorheizstation anheben zu müssen.The pretreatment station can comprise, for example, a preheating station for preheating the lower film web before it reaches the forming station. Such a preheating station can be relatively flat compared to the forming station or the sealing station, so that the deflection unit can be provided under the preheating station without having to lift the machine frame in the area of the preheating station.

Zusätzlich oder alternativ kann die Vorbehandlungsstation eine Loch- oder Schlitzeinheit umfassen, die dazu konfiguriert ist, die Unterfolienbahn zu lochen oder zu schlitzen. Die Loch- oder Schlitzeinheit kann dazu ausgelegt sein, Löcher oder Schlitze in die Unterfolienbahn einzubringen, welche später in der Siegelstation dazu verwendet werden können, die Verpackungen vor dem Versiegeln zu evakuieren und/oder eine Schutzgasatmosphäre in die Verpackungen einzubringen, beispielweise um die Haltbarkeit der zu verpackenden Produkte zu erhöhen.Additionally or alternatively, the pretreatment station can comprise a perforation or slitting unit which is configured to perforate or slit the lower film web. The perforated or slit unit can be designed to make holes or slots in the lower film web, which can later be used in the sealing station to evacuate the packaging before sealing and / or to introduce a protective gas atmosphere into the packaging, for example to increase the shelf life of the to increase products to be packaged.

Vorzugsweise ist die Loch- oder Schlitzeinheit in das Maschinengestell integriert und/oder daran angebracht. Die Loch- oder Schlitzeinheit kann im Vergleich zu der Formstation oder der Siegelstation derart flach ausgebildet sein, dass das Vorsehen der Umlenkeinheit unter der Loch- oder Schlitzeinheit möglich ist, ohne die Bauhöhe der Tiefziehverpackungsmaschine im Bereich der Loch- oder Schlitzeinheit anzuheben.The perforated or slotted unit is preferably integrated into the machine frame and / or attached to it. The perforated or slit unit can be designed flat in comparison to the forming station or the sealing station so that the deflection unit can be provided under the perforated or slotted unit without increasing the overall height of the thermoforming packaging machine in the area of the perforated or slotted unit.

Vorzugsweise umfasst die Loch- oder Schlitzeinheit eine Abfalleinrichtung, die zum Sammeln und/oder Abführen von bei dem Lochen oder Schlitzen der Unterfolienbahn entstehenden Folienresten konfiguriert ist. So kann verhindert werden, dass bei dem Lochen oder Schlitzen der Unterfolienbahn entstehende Folienreste im Bereich der Umlenkeinheit auf die Unterfolienbahn fallen.The perforation or slitting unit preferably comprises a waste device which is configured to collect and / or discharge film residues produced during the perforation or slitting of the lower film web. In this way, it can be prevented that film residues produced during the perforation or slitting of the lower film web fall onto the lower film web in the area of the deflection unit.

Vorzugsweise umfasst die Loch- oder Schlitzeinheit eine Absaugeinrichtung zum Absaugen von bei dem Lochen oder Schlitzen der Unterfolienbahn entstehenden Folienresten. So können die Folienreste automatisch und zuverlässig entfernt werden.The perforated or slit unit preferably comprises a suction device for sucking off film residues produced during the perforation or slitting of the lower film web. In this way, the film residue can be removed automatically and reliably.

Im Folgenden wird die Erfindung anhand eines Ausführungsbeispiels unter Bezugnahme auf die Figuren erläutert. Dabei zeigt

Figur 1
eine schematische Draufsicht auf eine Tiefziehverpackungsmaschine gemäß einer Ausführungsform;
Figur 2
eine schematische Seitenansicht auf die Tiefziehverpackungsmaschine aus Figur 1;
Figur 3
eine schematische Darstellung der Wirkungsweise einer Umlenkeinheit der Tiefziehverpackungsmaschine gemäß der Ausführungsform in Draufsicht; und
Figur 4
eine schematische ausschnittsweise Perspektivansicht auf eine beispielhafte Umlenkeinheit der Tiefziehverpackungsmaschine gemäß der Ausführungsform.
The invention is explained below using an exemplary embodiment with reference to the figures. It shows
Figure 1
a schematic plan view of a thermoforming packaging machine according to one embodiment;
Figure 2
a schematic side view of the thermoforming packaging machine from Figure 1;
Figure 3
a schematic representation of the mode of operation of a deflection unit of the thermoforming packaging machine according to the embodiment in plan view; and
Figure 4
a schematic partial perspective view of an exemplary deflection unit of the thermoforming packaging machine according to the embodiment.

Fig. 1 zeigt in Draufsicht eine Tiefziehverpackungsmaschine 1 gemäß einer Ausführungsform. Die Tiefziehverpackungsmaschine 1 umfasst ein Maschinengestell 3, an dem entlang einer Produktionsrichtung P eine Vorbehandlungsstation 5, eine Formstation 7, eine Einlegestrecke 9, eine Siegelstation 11 und eine Schneidstation 13 linear hintereinander angeordnet sind. Es ist zudem eine Transporteinrichtung 15 vorgesehen, die dazu ausgelegt ist, eine Unterfolienbahn 17 entlang der Transportrichtung P durch die Vorbehandlungsstation 5 weiter zu der Formstation 7, noch weiter zu der Einlegestrecke 9, noch weiter zu der Siegelstation 11 und schließlich zu der Schneidstation 13 zu fördern. Fig. 1 shows a top view of a thermoforming packaging machine 1 according to one embodiment. The thermoforming packaging machine 1 comprises a machine frame 3 on which a pretreatment station 5, a forming station 7, an insertion section 9, a sealing station 11 and a cutting station 13 are arranged linearly one behind the other along a production direction P. A transport device 15 is also provided, which is designed to feed a lower film web 17 along the transport direction P through the pretreatment station 5 on to the forming station 7, even further to the insertion section 9, even further to the sealing station 11 and finally to the cutting station 13 promote.

Fig. 2 zeigt eine schematische Seitenansicht der Tiefziehverpackungsmaschine 1 in Blickrichtung A (siehe Fig. 1). In der dargestellten Ausführungsform umfasst die Transporteinrichtung 15 auf beiden Seiten der Unterfolienbahn 17 angeordnete Klammerketten 19, die die Unterfolienbahn 17 beidseitig mittels Klammerelementen 21 greifen. Mittels einer Antriebseinrichtung 23 für die Klammerketten 19 wird die Unterfolienbahn 17 entlang der Produktionsrichtung P gefördert. Die Klammerketten 19 sind beidseitig zwischen oberen und unteren Führungsschienen des Maschinengestells 3 geführt. Fig. 2 shows a schematic side view of the thermoforming packaging machine 1 in viewing direction A (see Fig. 1 ). In the embodiment shown, the transport device 15 comprises clamp chains 19 which are arranged on both sides of the lower film web 17 and which grip the lower film web 17 on both sides by means of clamp elements 21. The lower film web 17 is conveyed along the production direction P by means of a drive device 23 for the clamp chains 19. The clamp chains 19 are guided on both sides between the upper and lower guide rails of the machine frame 3.

Die Vorbehandlungsstation 5 ist zum Vorbehandeln der Unterfolienbahn 17 vor Erreichen der Formstation 7 ausgelegt. Die der Vorbehandlungsstation 5 bezüglich der Produktionsrichtung P nachgeordnete Formstation 7 umfasst ein Formwerkzeug 25 zum Ausbilden von Mulden 27 in der Unterfolienbahn 17 durch Tiefziehen. Das Formwerkzeug 25 kann insbesondere ein Formwerkzeugoberteil und ein Formwerkzeugunterteil aufweisen, die zum Tiefziehen der Mulden 27 bezüglich einer vertikalen Richtung relativ zueinander beweglich sind. In der der Formstation 7 bezüglich der Produktionsrichtung P nachgeordneten Einlegestrecke 9 werden die in der Unterfolienbahn 17 ausgebildeten Mulden 27 mit zu verpackenden Produkten 29 befüllt. Das Befüllen der Mulden 27 kann automatisch oder manuell geschehen. In der gezeigten Ausführungsform werden die Produkte 29 mittels eines Zuführbands 31, welches über der Formstation 7 parallel zur Produktionsrichtung P verläuft, von einer Verarbeitungsstation 33, wie beispielsweise einer Lebensmittelschneideeinrichtung, zu der Einlegestrecke 9 gefördert. In der der Einlegestrecke 9 bezüglich der Produktionsrichtung P nachgeordneten Siegelstation 11 werden die befüllten Mulden 27 mit einer Oberfolie 35 verschlossen. Hierzu umfasst die Siegelstation 11 ein Siegelwerkzeug 37, welches vorzugsweise ein Siegelwerkzeugoberteil und ein entlang einer vertikalen Richtung senkrecht dazu bewegliches Siegelwerkzeugunterteil umfasst. Nach dem Verschließen der Mulden 27 in der Siegelstation 11 werden die Verpackungen in der Schneidstation 13 aus dem Folienverbund ausgetrennt, so dass die fertiggestellten und separierten Verpackungen 39 anschließend mittels einer Fördereinrichtung 41 abtransportiert werden können. In der gezeigten Ausführungsform umfasst die Schneidstation 13 eine Querschnitteinrichtung 43 und eine Längsschnitteinrichtung 45.The pretreatment station 5 is designed to pretreat the lower film web 17 before it reaches the forming station 7. The forming station 7 arranged downstream of the pretreatment station 5 with respect to the production direction P comprises a forming tool 25 for forming depressions 27 in the lower film web 17 by deep drawing. The molding tool 25 can in particular have an upper molding tool part and a lower molding tool part, which are movable relative to one another in a vertical direction for deep-drawing the depressions 27. In the insertion section 9 downstream of the forming station 7 with respect to the production direction P, the depressions 27 formed in the lower film web 17 are filled with products 29 to be packaged. The troughs 27 can be filled automatically or manually. In the embodiment shown, the products 29 are conveyed from a processing station 33, such as a food cutting device, to the insertion section 9 by means of a feed belt 31, which runs above the forming station 7 parallel to the production direction P. In the sealing station 11 downstream of the insertion section 9 with respect to the production direction P, the filled troughs 27 are closed with an upper film 35. For this purpose, the sealing station 11 comprises a sealing tool 37, which preferably comprises an upper sealing tool part and a lower sealing tool part movable along a vertical direction perpendicular thereto. After the recesses 27 have been closed in the sealing station 11, the packs are separated from the film composite in the cutting station 13, so that the finished and separated packagings 39 can then be transported away by means of a conveying device 41. In the embodiment shown, the cutting station 13 comprises a cross-sectional device 43 and a longitudinal cutting device 45.

Wie aus Fig. 1 ersichtlich, ist eine Folienaufnahme 47 zum Aufnehmen einer Unterfolien-Vorratsrolle 49 gegenüber der Produktionsrichtung P der Tiefziehverpackungsmaschine 1 seitlich versetzt angeordnet. Im gezeigten Ausführungsbeispiel ist die Folienaufnahme 47 gegenüber der Produktionsrichtung P um 90° versetzt angeordnet. Die Entnahmerichtung E, entlang der die Unterfolienbahn 17 die Unterfolien-Vorratsrolle 49 verlässt, steht zu der Produktionsrichtung P senkrecht. Es wäre selbstverständlich auch denkbar, dass die Folienaufnahme 47 auf der anderen Seite der Tiefziehverpackungsmaschine 1 angeordnet ist. Der Winkel zwischen der Entnahmerichtung E und der Produktionsrichtung P könnte auch von 90° abweichen. Durch das seitlich versetzte Anordnen der Folienaufnahme 47 wird entlang der Produktionsrichtung P Einbauraum eingespart. Im gezeigten Anwendungsbeispiel wird hierdurch ermöglicht, die Verarbeitungsstation 33 näher an den Anfang der Tiefziehverpackungsmaschine 1 heranzurücken. Zudem lässt sich die Folienaufnahme 47 so anordnen, dass sie zum Wechseln der Unterfolien-Vorratsrolle 49 besonders leicht zugänglich ist.How out Fig. 1 As can be seen, a film receptacle 47 for receiving a lower film supply roll 49 is arranged laterally offset with respect to the production direction P of the thermoforming packaging machine 1. In the exemplary embodiment shown, the film receptacle 47 is arranged offset by 90 ° with respect to the production direction P. The removal direction E, along which the lower film web 17 leaves the lower film supply roll 49, is perpendicular to the production direction P. It would of course also be conceivable for the film receptacle 47 to be arranged on the other side of the thermoforming packaging machine 1. The angle between the removal direction E and the production direction P could also deviate from 90 °. The laterally offset arrangement of the film receptacle 47 saves installation space along the production direction P. In the application example shown, this makes it possible to move the processing station 33 closer to the start of the thermoforming packaging machine 1. In addition, the film receptacle 47 can be arranged in such a way that it is particularly easily accessible for changing the lower film supply roll 49.

Um die Unterfolienbahn 17 trotz der seitlich versetzt angeordneten Folienaufnahme 47 entlang der Produktionsrichtung P in den Produktionsablauf der Tiefziehverpackungsmaschine 1 einbringen zu können, ist eine Umlenkeinheit 51 vorgesehen. Die Umlenkeinheit 51 ist dazu konfiguriert, die Unterfolienbahn 17 vor Erreichen der Vorbehandlungsstation 5 bezüglich einer vertikalen Achse V um einen Winkel a umzulenken. In der gezeigten Ausführungsform wird die Unterfolienbahn 17 durch die Umlenkeinheit 51 von der Entnahmerichtung E in eine Zwischenrichtung Z umgelenkt, die antiparallel zur Produktionsrichtung P ist.In order to be able to introduce the lower film web 17 into the production sequence of the thermoforming packaging machine 1 along the production direction P despite the laterally offset film receptacle 47, a deflection unit 51 is provided. The deflection unit 51 is configured to deflect the lower film web 17 by an angle α with respect to a vertical axis V before it reaches the pretreatment station 5. In the embodiment shown, the lower film web 17 is deflected by the deflection unit 51 from the removal direction E into an intermediate direction Z, which is antiparallel to the production direction P.

Da sich die Umlenkeinheit 51 erfindungsgemäß zumindest teilweise unter der Vorbehandlungsstation 5 befindet, sind Details der Umlenkung in Fig. 1 nicht sichtbar. In Fig. 3 ist daher die Umlenkung der Unterfolienbahn 17 durch die Umlenkeinheit 51 schematisch in Draufsicht dargestellt, wobei benachbarte Elemente der Tiefziehverpackungsmaschine 1 nicht dargestellt sind. Die Unterfolienbahn 17 erreicht die Umlenkeinheit 51 entlang der Entnahmerichtung E. An einer Umlenkkante 53 der Umlenkeinheit 51 wird die Unterfolienbahn 17 dann bezüglich der vertikalen Achse V (in Fig. 3 senkrecht zur Zeichenebene) um den Winkel a in die Zwischenrichtung Z umgelenkt, welche in der gezeigten Ausführungsform antiparallel zur Produktionsrichtung P ist.Since, according to the invention, the deflection unit 51 is at least partially located under the pretreatment station 5, details of the deflection are shown in FIG Fig. 1 not visible. In Fig. 3 Therefore, the deflection of the lower film web 17 by the deflection unit 51 is shown schematically in plan view, adjacent elements of the thermoforming packaging machine 1 not being shown. The lower film web 17 reaches the deflection unit 51 along the removal direction E. At a deflection edge 53 of the deflection unit 51, the lower film web 17 is then with respect to the vertical axis V (in Fig. 3 perpendicular to the plane of the drawing) by the angle a in the intermediate direction Z, which is antiparallel to the production direction P in the embodiment shown.

In der dargestellten Variante wird die Unterfolienbahn 17 der Umlenkeinheit 51 entlang der Entnahmerichtung E zugeführt, entlang der die Unterfolienbahn 17 die Folienaufnahme 47 verlässt. Dies ist aber nicht zwingend notwendig. Es wäre beispielsweise auch denkbar, dass zwischen der Folienaufnahme 47 und der Umlenkeinheit 51 weitere Umlenkeinheiten vorgesehen sind, um die Folienaufnahme 47 im Wesentlichen völlig frei positionieren zu können. Bevorzugterweise wird die Unterfolienbahn 17 durch die Umlenkeinheit 51 um im Wesentlichen 90° umgelenkt. Abhängig davon, entlang welcher Richtung die Unterfolienbahn 17 die Umlenkeinheit 51 erreicht, kann es aber auch vorteilhaft sein, wenn die Umlenkeinheit 51 die Unterfolienbahn 17 um einen anderen Winkel umlenkt, beispielsweise um einen Winkel zwischen 60° und 120° oder einen Winkel zwischen 80° und 100°.In the variant shown, the lower film web 17 is fed to the deflection unit 51 along the removal direction E, along which the lower film web 17 leaves the film receptacle 47. However, this is not absolutely necessary. It would also be conceivable, for example, for further deflection units to be provided between the film receptacle 47 and the deflection unit 51 in order to be able to position the film receptacle 47 essentially completely freely. The lower film web 17 is preferably deflected by the deflection unit 51 by essentially 90 °. Depending on the direction along which the lower film web 17 reaches the deflection unit 51, it can also be advantageous if the deflection unit 51 deflects the lower film web 17 by another angle, for example by an angle between 60 ° and 120 ° or an angle between 80 ° and 100 °.

Die Umlenkkante 53 der Umlenkeinheit 51 kann beispielsweise, wie in Fig. 4 dargestellt, durch einen zylindrischen Körper 55 gebildet sein, um den herum die Unterfolienbahn 17 umgelenkt wird. Vorzugsweise umfasst der zylindrische Körper 55 Druckluftöffnungen 57, durch die im Betrieb Druckluft entweicht, so dass ein Luftpolster zwischen dem zylindrischen Körper 55 und der Unterfolienbahn 17 gebildet wird. So lässt sich die Unterfolienbahn 17 reibungsreduziert umlenken.The deflecting edge 53 of the deflecting unit 51 can, for example, as in FIG Fig. 4 shown, be formed by a cylindrical body 55 around which the lower film web 17 is deflected. The cylindrical body 55 preferably comprises compressed air openings 57 through which compressed air escapes during operation, so that an air cushion is formed between the cylindrical body 55 and the lower film web 17. The lower film web 17 can thus be deflected with reduced friction.

Wie in Fig. 2 dargestellt, umfasst das Maschinengestell 3 in der gezeigten Ausführungsform unterhalb der Vorbehandlungsstation 5 einen Aussparungsbereich 59, in dem die Umlenkeinheit 51 angeordnet ist. Der Aussparungsbereich 59 ist dadurch gebildet, dass das Maschinengestell 3 einen entgegen der Produktionsrichtung P überstehend ausgebildeten Ausleger 61 aufweist, an dem die Vorbehandlungsstation 5 angeordnet ist. Die Umlenkeinheit 51 ist in dem Aussparungsbereich 59 vorgesehen und befindet sich zumindest teilweise unterhalb der Vorbehandlungsstation 5. Auf diese Art und Weise wird der Bauraum unter der Vorbehandlungsstation 5 genutzt, um die Umlenkung der Unterfolienbahn 17 zu realisieren. Die Erstreckungslänge der Tiefziehverpackungsmaschine 1 entlang der Produktionsrichtung P kann somit reduziert werden. In der dargestellten Ausführungsform ist die Umlenkeinheit 51 vollständig unter dem Ausleger 61 des Maschinengestells 3 und unter der Vorbehandlungsstation 5 vorgesehen. Es wäre aber auch denkbar, dass Teile der Umlenkeinheit 51 seitlich oder entlang der Produktionsrichtung P über den Ausleger 61 und/oder über die Vorbehandlungsstation 5 hinausstehen. Vorzugsweise liegt die Umlenkeinheit 51 zumindest zur Hälfte, zumindest zu 75 % oder vollständig unter der Vorbehandlungsstation 5 oder dem Ausleger 61.As in Fig. 2 As shown, the machine frame 3 in the embodiment shown comprises a recess area 59 below the pretreatment station 5, in which the deflection unit 51 is arranged. The recess area 59 is formed in that the machine frame 3 has an arm 61 which protrudes counter to the production direction P and on which the pretreatment station 5 is arranged. The deflection unit 51 is provided in the recess area 59 and is located at least partially below the pretreatment station 5. In this way, the installation space under the pretreatment station 5 is used to implement the deflection of the lower film web 17. The extension length of the thermoforming packaging machine 1 along the production direction P can thus be reduced. In the embodiment shown, the deflection unit 51 is provided completely under the boom 61 of the machine frame 3 and under the pretreatment station 5. However, it would also be conceivable that parts of the deflection unit 51 protrude laterally or along the production direction P over the boom 61 and / or over the pretreatment station 5. The deflection unit 51 is preferably at least halfway, at least 75% or completely below the pretreatment station 5 or the boom 61.

Die Tiefziehverpackungsmaschine 1 umfasst des Weiteren eine Einleiteinrichtung 63, die dazu ausgelegt ist, die Unterfolienbahn 17 nach dem Umlenken durch die Umlenkeinheit 51 in die Vorbehandlungsstation 5 einzuleiten. Die Einleiteinrichtung 63 muss die Unterfolienbahn 17 nicht notwendigerweise selbst in die Vorbehandlungsstation 5 fördern. Es reicht aus, wenn sie die Unterfolienbahn 17 so ausrichtet, dass sie in den normalen Produktionsablauf der Tiefziehverpackungsmaschine 1 eingebracht wird, also von der Transporteinrichtung 15 zum Fördern aufgenommen wird. In der dargestellten Ausführungsform umfasst die Einleiteinrichtung 63 eine Mehrzahl von horizontal ausgerichteten Umlenkrollen 65. Vorzugsweise ist die Einleiteinrichtung 63 ebenfalls zumindest teilweise unter der Vorbehandlungsstation 5 und/oder dem Ausleger 61 angeordnet, um weiter Bauraum zu sparen. Die Einleiteinrichtung 63, insbesondere deren Umlenkrollen 65, kann am Maschinengestell 3 angebracht sein.The thermoforming packaging machine 1 furthermore comprises an inlet device 63 which is designed to feed the lower film web 17 after it has been deflected by the deflection unit 51 into the Initiate pretreatment station 5. The introduction device 63 does not necessarily have to convey the lower film web 17 into the pretreatment station 5 itself. It is sufficient if it aligns the lower film web 17 in such a way that it is introduced into the normal production sequence of the thermoforming packaging machine 1, that is to say is picked up by the transport device 15 for conveying. In the embodiment shown, the inlet device 63 comprises a plurality of horizontally aligned deflection rollers 65. The inlet device 63 is preferably also at least partially arranged under the pretreatment station 5 and / or the boom 61 in order to save further installation space. The introduction device 63, in particular its deflection rollers 65, can be attached to the machine frame 3.

In der Ausführung, in der die Unterfolienbahn 17 in Fig. 2 als durchgezogene Linie dargestellt ist, verlässt die Unterfolienbahn 17 die Umlenkeinrichtung 51 entlang einer Richtung, die zumindest in Projektion von oben auf die Tiefziehverpackungsmaschine 1 antiparallel zu der Produktionsrichtung P ist. Es wäre aber auch denkbar, dass die Unterfolienbahn 17 die Umlenkeinheit 51 entlang einer Richtung verlässt, die zumindest in Projektion von oben auf die Tiefziehverpackungsmaschine 1 parallel zur Produktionsrichtung P verläuft. Dieser Fall ist in Fig. 2 mit gestrichelten Linien für die Unterfolienbahn 17 dargestellt, wobei die entsprechenden Umlenkrollen der Einleiteinrichtung 63 für diese Variante der Übersichtlichkeit halber nicht dargestellt sind.In the embodiment in which the lower film web 17 in Fig. 2 is shown as a solid line, the lower film web 17 leaves the deflection device 51 along a direction which is antiparallel to the production direction P at least in projection from above onto the thermoforming packaging machine 1. However, it would also be conceivable for the lower film web 17 to leave the deflection unit 51 along a direction which, at least in projection from above onto the thermoforming packaging machine 1, runs parallel to the production direction P. This case is in Fig. 2 shown with dashed lines for the lower film web 17, the corresponding deflection rollers of the inlet device 63 not being shown for this variant for the sake of clarity.

In der dargestellten Ausführungsform umfasst die Vorbehandlungsstation 5 eine Vorheizstation 67 zum Vorheizen der Unterfolienbahn 17 vor Erreichen der Formstation 7, um das Tiefziehen durch die Formstation 7 zu erleichtern. Zusätzlich umfasst die Vorbehandlungsstation 5 in der gezeigten Ausführungsform eine Loch- oder Schlitzeinheit 69 zum Lochen oder Schlitzen der Unterfolienbahn 17. Durch mittels der Loch- oder Schlitzeinheit 69 eingebrachte Schlitze oder Löcher kann in der Siegelstation 11 vor dem Versiegeln der Verpackungen Gas aus den Verpackungen abgesaugt oder eine Schutzgasatmosphäre eingebracht werden, so dass die Produkte unter Vakuum oder Schutzgasatmosphäre verpackt werden können. Die dargestellte Loch- oder Schlitzeinheit 69 umfasst eine Absaugeinrichtung 71 zum Absaugen von bei dem Lochen oder Schlitzen der Unterfolienbahn 17 entstehenden Folienresten, so dass diese nicht im Bereich der Umlenkeinheit 51 auf die Unterfolienbahn 17 fallen können. Ein Absaugen der Folienreste ist aber nicht zwingend erforderlich und es könnte auch eine anderweitig ausgestaltete Abfalleinrichtung zum Sammeln und/oder Abführen von bei dem Lochen oder Schlitzen der Unterfolienbahn 17 entstehenden Folienresten vorgesehen sein. Im einfachsten Fall könnte zwischen der Vorbehandlungsstation 5 und der Umlenkeinheit 51 einfach ein Blech zum Auffangen von Folienresten angebracht sein.In the embodiment shown, the pretreatment station 5 comprises a preheating station 67 for preheating the lower film web 17 before it reaches the forming station 7 in order to facilitate deep-drawing through the forming station 7. In addition, in the embodiment shown, the pretreatment station 5 comprises a perforation or slit unit 69 for perforating or slitting the lower film web 17. Through slits or holes made by means of the perforation or slitting unit 69, gas can be extracted from the packaging in the sealing station 11 before the packaging is sealed or a protective gas atmosphere can be introduced so that the products can be packaged in a vacuum or protective gas atmosphere. The illustrated perforated or slit unit 69 comprises a suction device 71 for sucking off film residues produced during the perforation or slitting of the lower film web 17, so that they cannot fall onto the lower film web 17 in the area of the deflection unit 51. However, suctioning off the film residues is not absolutely necessary, and a differently configured waste device for collecting and / or removing film residues resulting from the perforation or slitting of the lower film web 17 could also be provided. In the simplest case, a sheet for catching film residues could simply be attached between the pretreatment station 5 and the deflection unit 51.

Es ist auch denkbar, dass die Vorbehandlungsstation 5 nur entweder eine Vorheizstation 67 oder eine Loch- oder Schlitzeinheit 69 umfasst, nicht aber beides. Beispielsweise könnte die Loch- oder Schlitzeinheit 69 in der Formstation 7 integriert sein oder ganz weggelassen werden. Eine Loch- oder Schlitzeinheit 69 oder eine Vorheizstation 67 eignen sich besonders gut, um darunter die Umlenkeinheit 51 vorzusehen, da sie im Vergleich zu beispielsweise der Formstation 7 oder der Siegelstation 11 eine relativ geringe Bauhöhe aufweisen. Es wäre aber auch denkbar, dass die Vorbehandlungsstation 5 alternativ oder zusätzlich eine andere Maschineneinheit zum Vorbehandeln der Unterfolienbahn 17 umfasst.It is also conceivable that the pretreatment station 5 only comprises either a preheating station 67 or a perforation or slot unit 69, but not both. For example, the hole or slot unit 69 could be integrated in the forming station 7 or omitted entirely. A hole or slot unit 69 or a preheating station 67 are particularly suitable for providing the deflection unit 51 underneath, since they have a relatively low overall height compared to, for example, the forming station 7 or the sealing station 11. However, it would also be conceivable that the pretreatment station 5 alternatively or additionally comprises another machine unit for pretreating the lower film web 17.

Claims (13)

  1. Thermoforming packaging machine (1) having a production direction (P), wherein the thermoforming packaging machine (1) comprises the following:
    a film seat (47) for receiving a lower film supply roll (49);
    a pre-treatment station (5) for pre-treating the lower film web (17);
    a forming station (7) provided downstream of the pre-treatment station (5) with respect to the production direction (P) and having a forming tool (25) for forming depressions (27) in the lower film web (17) by thermoforming;
    a filling path (9) for filling the depressions (27) with products (29) downstream of the forming station (7) with respect to the production direction (P);
    a sealing station (11) provided downstream of the filling path (9) with respect to the production direction (P) and comprising a sealing tool (37) for closing the depressions (27) with an upper film (35);
    a machine rack (3) at which the pre-treatment station (5), the forming station (7), the filling path (9), and the sealing station (11) are arranged one behind the other along the production direction (P); and
    a transport assembly (15) configured to convey the lower film web (17) along the production direction (P) through the pre-treatment station (5), further to the forming station (7), even further to the filling path (9), and finally to the sealing station (11),
    characterized by
    a redirection unit (51) configured to redirect the lower film web (17) about an angle (a) around a vertical axis (V) with respect to the vertical axis (V) before it reaches the pre-treatment station (5),
    wherein the redirection unit (51) is at least partially provided below the pre-treatment station (5), and
    wherein the machine rack (3) comprises a cavity region (59) below the pre-treatment station (5), the redirection unit (51) being at least partially arranged in the cavity region (59).
  2. Thermoforming packaging machine according to claim 1, wherein the film seat (47) is offset with respect to the production direction (P).
  3. Thermoforming packaging machine according to claim 1 or 2, wherein the redirection unit (51) is configured to redirect the lower film web (17) about an angle between 60 degrees and 120 degrees, in particular between 80 degrees and 100 degrees, with respect to the vertical axis (V).
  4. Thermoforming packaging machine according to any one of the preceding claims, wherein the redirection unit (51) is configured such that a conveying direction (Z) of the lower film web (17) after redirection by the redirection unit (51) is parallel or antiparallel to the production direction (P), at least in a projection onto the thermoforming packaging machine (1) from above.
  5. Thermoforming packaging machine according to any one of the preceding claims, further comprising an introduction assembly (63) configured to introduce the lower film web (17) into the pre-treatment station (5) after redirection by the redirection unit (51).
  6. Thermoforming packaging machine according to claim 5, wherein the introduction assembly (63) comprises at least one horizontally arranged guide pulley (65).
  7. Thermoforming packaging machine according to claim 5 or 6, wherein the introduction assembly (63) is at least partially arranged below the pre-treatment station (5).
  8. Thermoforming packaging machine according to any one of claims 5 to 7, wherein the introduction assembly (63) is attached at the machine rack (3).
  9. Thermoforming packaging machine according to any one of the preceding claims, wherein the machine rack (3) comprises a cantilever (61) that protrudes against the production direction (P) and at which the pre-treatment station (5) is arranged.
  10. Thermoforming packaging machine according to any one of the preceding claims, wherein the pre-treatment station (5) comprises a pre-heating station (67) for pre-heating the lower film web (17) before reaching the forming station (7).
  11. Thermoforming packaging machine according to any one of the preceding claims, wherein the pre-treatment station (5) comprises a punching or slitting unit (69) configured to punch or slit the lower film web (17).
  12. Thermoforming packaging machine according to claim 11, wherein the punching or slitting unit (69) comprises a waste assembly configured to collect and/or discharge film remains generated upon punching or slitting of the lower film web (17).
  13. Thermoforming packaging machine according to claim 11, wherein the punching or slitting unit (69) comprising a vacuum assembly (71) for vacuuming up film remains generated upon punching or slitting of the lower film web (17).
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EP3539883A1 (en) 2019-09-18
ES2879899T3 (en) 2021-11-23
US20190283913A1 (en) 2019-09-19
US11260999B2 (en) 2022-03-01
CN209956274U (en) 2020-01-17
DE102018204044A1 (en) 2019-09-19

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