EP3489005B1 - Outil de moulage et procédé de fabrication d'un emballage - Google Patents
Outil de moulage et procédé de fabrication d'un emballage Download PDFInfo
- Publication number
- EP3489005B1 EP3489005B1 EP17203560.2A EP17203560A EP3489005B1 EP 3489005 B1 EP3489005 B1 EP 3489005B1 EP 17203560 A EP17203560 A EP 17203560A EP 3489005 B1 EP3489005 B1 EP 3489005B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- material sheet
- female die
- sheet
- die part
- film layer
- 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
Links
- 238000004806 packaging method and process Methods 0.000 title claims description 71
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000463 material Substances 0.000 claims description 194
- 229920001169 thermoplastic Polymers 0.000 claims description 33
- 239000004416 thermosoftening plastic Substances 0.000 claims description 33
- 238000004080 punching Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000011111 cardboard Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 2
- 239000000123 paper Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 description 114
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Images
Classifications
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- 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
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/02—Feeding or positioning sheets, blanks or webs
- B31B50/10—Feeding or positioning webs
- B31B50/12—Feeding or positioning webs by air pressure or suction
-
- 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
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/26—Folding sheets, blanks or webs
- B31B50/44—Folding sheets, blanks or webs by plungers moving through folding dies
-
- 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
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
- B31B50/142—Cutting, e.g. perforating, punching, slitting or trimming using presses or dies
-
- 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
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/59—Shaping sheet material under pressure
- B31B50/592—Shaping sheet material under pressure using punches or dies
-
- 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
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/74—Auxiliary operations
- B31B50/742—Coating; Impregnating; Waterproofing; Decoating
- B31B50/745—Coating or impregnating formed boxes
-
- 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
- B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
- B31B2100/002—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed
- B31B2100/0024—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed having all side walls attached to the bottom
-
- 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
- B31B2110/00—Shape of rigid or semi-rigid containers
- B31B2110/30—Shape of rigid or semi-rigid containers having a polygonal cross section
- B31B2110/35—Shape of rigid or semi-rigid containers having a polygonal cross section rectangular, e.g. square
Definitions
- the present invention relates to the field of manufacturing packaging, in particular packaging which is at least partially made from a material that is essentially non-thermoplastically deformable.
- a device for deep-drawing a cardboard blank into a bowl-shaped or cup-shaped object is known.
- Individual blanks are completely punched out of a cardboard web by means of a punching device.
- the punched-out individual blanks are then fed to a forming station for forming.
- the molding station comprises a molding die and a molding die that can be lowered into it.
- a fold holder is provided which can be acted upon by the molding die, so that the individual blank to be formed is clamped between the molding die and the fold holder. This is intended to ensure that the material slips in a controlled manner during deep drawing.
- a counter-piston which is able to press against the underside of the individual blank, is arranged opposite the forming die.
- the DE 10 2014 106 427 A1 describes a method for producing three-dimensional molded parts from a sheet of a flat, plastically deformable fiber material with a deep-drawing device which comprises a punch and an associated die. Before reaching the deep-drawing device, a relief cut is made so that a blank for the molded part is connected to the web via at least one web and is otherwise detached from the web. In the deep-drawing device, the punch is lowered and presses the blank into a drawing sleeve. A counter holder pushes the molded part out of the draw sleeve.
- the DE 2 226 222 A1 describes a method for erecting cardboard blanks, which consist of a bottom field and a number of side wall fields and possibly joint fields.
- a stack of such cardboard blanks is made available in a magazine.
- Under the magazine there is a mold with a puller located under the open bottom. This has suction holes on its surface that are connected to a vacuum source. The puller can be passed up through the open bottom of the mold to grab a carton blank and then pull it down into the mold.
- the DE 2 008 313 A1 describes a method of folding a scored blank of paperboard into a container.
- a blank which has an approximately rectangular shape, is moved downwards by means of a vacuum plate with a number of suction cups along an arrangement of folding elements which have rods and stops.
- the object of the present invention is to provide a method which allows packaging to be produced from a non-thermoplastic or only slightly thermoplastic material and which can be efficiently integrated into a higher-level work process.
- a corresponding molding tool should be specified.
- a pre-cut sheet of material is first provided.
- a partial area of the material sheet is incompletely punched out of the prepunched material sheet, so that the partial area is connected to a remaining area of the material sheet via a plurality of retaining lugs.
- the incompletely punched-out part of the area should later be used for the packaging, or a part of it, form and can be shaped accordingly.
- the packaging is to be produced, for example, as a packaging tray with a rectangular base area, the partial area can be punched out as a substantially rectangular area.
- the packaging could be designed as a packaging tray with a round or elliptical base.
- the retaining lugs are preferably positioned in such a way that the incompletely punched-out partial surface is held in several directions on the remaining surface of the sheet of material. In this way, the punched-out partial area remains in a defined orientation and position relative to the remaining area of the sheet of material.
- the pre-punched sheet of material is positioned over a molding die of a molding tool, so that the incompletely punched-out partial surface of the sheet of material at least partially covers an opening of a molding recess in the molding die.
- the recess of the molding die is designed according to the desired shape of the packaging to be produced.
- the remaining surface of the material sheet is clamped against a contact surface of the forming die.
- a clamping device can act on the remaining surface of the sheet of material against the contact surface of the molding die. It is possible, but not absolutely necessary, for the remaining surface of the sheet of material to actually come into contact with the forming die. It would also be conceivable that one or more intermediate elements are provided between the contact surface of the molding die and the remaining surface of the sheet of material, as long as the remaining surface of the sheet of material is immobilized at least in some areas by the clamping relative to the contact surface.
- the incompletely punched-out partial area of the sheet of material is sucked by means of negative pressure onto an insert that can be moved vertically in the molding cavity of the molding die.
- the height-adjustable insert is in a starting position. From the starting position, the height-adjustable insert is moved further into the mold cavity along one direction of movement. This can be done with continued suction of the partial area of the sheet of material to the height-adjustable insert.
- the partial surface of the sheet of material is drawn into the mold recess and thus shaped into a packaging tray.
- a sheet of material is used from which the partial area which is then used to shape the packaging is only partially made from the sheet of material is punched out. Therefore, the partial area can be fed to the molding tool together with the remaining area of the material sheet. This facilitates correct positioning over the molding die of the molding tool, even with a complicated shape of the punched-out partial surface. In particular, automated positioning over the molding die is simplified, since the remaining area of the sheet of material is available as a contact surface for holding or gripping elements.
- the molded packaging tray in the die is more easily accessible from above and can be subjected to further processing steps directly in the die.
- additional devices can be provided above the die, for example.
- the retaining lugs When the height-adjustable insert is moved from the starting position further into the mold recess, the retaining lugs preferably tear off, as a result of which the partial area is separated from the remaining area of the sheet of material. Since the remaining surface of the sheet of material is clamped against the contact surface of the molding die and the partial surface of the sheet of material is sucked onto the height-adjustable insert by means of negative pressure, the retaining lugs are torn off in a controlled manner. It is generally not possible to twist the surface or the sheet of material when the retaining lugs are torn off.
- the recess in the mold has a bevel that widens in the direction of the opening.
- packaging trays can be formed, the side walls of which are inclined outwards in the direction of an opening in the packaging tray.
- the draft also makes it easier for the partial surface of the sheet of material to be drawn into the depression in the shape.
- the sheet of material it is possible for the sheet of material to be already pre-cut.
- pre-cut sheets of material could have been obtained from a supplier or previously produced in a separate process.
- Pre-cut sheets of material can be available separately.
- a multiplicity of pre-punched sheets of material are present in an interconnected state, for example as a supply roll.
- the pre-cut sheets of material could then be separated from one another before being positioned above the forming die, or a pre-cut sheet of material could be positioned above the die without prior separation from the other sheets of material.
- the method according to the invention comprises prepunching the sheet of material.
- the step of providing the prepunched sheet of material could then include the prepunching of the sheet of material, preferably by a punching station.
- the partial area of the sheet of material can be punched out incompletely from the sheet of material, so that the partial area remains connected to the remaining area of the sheet of material via the multiple retaining lugs.
- the sheet of material is already present as a separate sheet of material before the pre-punching. This could be positioned manually or automatically over the forming die after the pre-punching. However, it would also be conceivable that the sheet of material is part of a longer material web that is unrolled from a supply roll, for example. In this case, the sheet of material could first be fed to a punching station for pre-punching the sheet of material and then, for positioning the pre-punched sheet of material, be positioned by advancing the material web over the molding die of the molding tool. It would also be conceivable that a material web is fed to the punching station and the punching station separates the sheet of material from the rest of the material web at the same time as the partial area is punched out or in an additional step
- the material of the sheet of material is preferably essentially non-thermoplastically deformable.
- the sheet of material consists of a material which comprises components which, taken by themselves, are thermoplastically deformable. If the material of the sheet of material is not thermoplastically deformable, the tearing off of the retaining lugs can take place in a particularly controlled manner.
- the material of the sheet of material preferably comprises natural fiber, cardboard and / or paper. In this way, inexpensive, environmentally friendly and stable packaging can be produced.
- thermoplastic film layer is positioned over the sheet of material over the molding die.
- the thermoplastic film layer can be molded into the packaging tray formed from the partial surface of the material sheet, so that there is no direct contact between a product to be packaged and the packaging tray later. This is particularly advantageous if the product to be packaged has moisture which would be absorbed by the packaging tray on contact.
- the thermoplastic film layer is positioned over the sheet of material while the sheet of material is over the forming die.
- the thermoplastic film layer can be positioned over the sheet of material before the partial surface of the sheet of material is drawn into the mold recess by moving the height-adjustable insert and the packaging tray is thus formed.
- the packaging tray is first formed and the thermoplastic film layer is only then positioned over the sheet of material over the forming die.
- the film layer can be positioned over the sheet of material as long as it is still on the forming die. It is therefore not necessary to move the packaging tray to a further work station before the thermoplastic film layer is applied.
- the thermoplastic film layer is preferably formed into the packaging tray from the side of the film layer facing away from the sheet of material by using compressed air.
- the thermoplastic film layer is acted upon by the compressed air into the packaging tray and can lie against the interior of the packaging tray.
- the thermoplastic film layer is preferably held by the clamping device.
- the thermoplastic film layer can already be acted upon with compressed air while the partial surface of the sheet of material is drawn into the mold recess to form the packaging tray, so that the thermoplastic film layer is shaped together with the packaging tray.
- the film layer can be heated after positioning over the sheet of material over the forming die by means of a heating device located on the side of the film layer facing away from the forming die.
- the heating device can in particular be displaceable parallel to the direction of displacement of the height-displaceable insert.
- the heating device can be moved away from the molding die into a stowed position. After positioning the thermoplastic Film layer, the heating device can be moved from the stowed position in the direction of the molding die into a heating position in order to heat the thermoplastic film layer.
- the invention also relates to a molding tool for producing a packaging from a sheet of material which has been pre-punched by incompletely punching out a partial area of the sheet of material in such a way that the partial area remains connected to a remaining area of the sheet of material via several retaining lugs.
- the molding tool can be designed, suitable and configured for carrying out the method according to the invention. Features described with reference to the method can be transferred to the molding tool or to a packaging machine comprising the molding tool, and vice versa.
- a molding tool comprises a molding die which comprises a mold recess with an opening and a contact surface.
- the molding tool includes a clamping device which is designed to clamp the remaining surface of the sheet of material against the contact surface of the molding die when the pre-cut sheet of material is positioned over the molding die in such a way that the partial surface of the sheet of material at least partially covers the opening of the molding cavity of the molding die.
- a height-adjustable insert is provided in the cavity of the molding die and can be moved further into the cavity from a starting position along a travel direction.
- the molding tool also comprises a vacuum device to which a e.g.
- negative pressure that can be generated by means of a vacuum pump can be applied and which is designed to suck the partial surface of the sheet of material onto the height-adjustable insert by means of negative pressure.
- channels with openings are provided in the height-adjustable insert through which the negative pressure device can suck in the partial surface of the sheet of material.
- the recess in the mold has a bevel that widens in relation to the opening.
- the molding tool can furthermore comprise a compressed air device which is configured to act on a thermoplastic film layer positioned above the material sheet above the molding die by using compressed air from the side of the film layer facing away from the material sheet in the direction of the material sheet.
- a compressed air device which is configured to act on a thermoplastic film layer positioned above the material sheet above the molding die by using compressed air from the side of the film layer facing away from the material sheet in the direction of the material sheet.
- the molding tool can comprise a heating device which is designed to heat the film layer, after the film layer has been positioned over the sheet of material over the forming die, from the side of the film layer facing away from the forming die.
- the heating device can be moved parallel to the direction of movement of the height-adjustable insert towards the molding die and away from the molding die.
- the invention also relates to a packaging machine which comprises the described molding tool.
- the packaging machine can also include a punching station which is configured to pre-punch the sheet of material by incompletely punching out the partial area of the material sheet, so that the partial area remains connected to the remaining area of the material sheet via a plurality of retaining lugs.
- the packaging machine can also have a conveying device which is configured to position the sheet of material pre-cut by the punching station over the molding die of the molding tool so that the partial surface of the sheet of material at least partially covers the opening of the molding recess of the molding die.
- a method for producing a packaging in which, instead of the pre-punched sheet of material with the incompletely punched-out partial surface, a separate material blank is positioned over the molding die of the molding tool, which is to be formed into a packaging tray.
- Such a method comprises the positioning of a material blank over a molding die of a molding tool, so that the material blank at least partially covers an opening of a molding recess of the molding die.
- the material blank is sucked by means of negative pressure onto an insert that can be moved in height in the cavity of the molding die in a starting position of the insert that can be moved in height. From the starting position, the height-adjustable insert is moved further into the mold recess along a direction of movement, the material blank being drawn into the mold recess and thus formed into a packaging tray.
- the material blank can optionally be aligned on a positioning element.
- a positioning element for example in the form of positioning pins and / or positioning edges, can for example be provided or attached to the molding die.
- the features described can be transferred to the method in which the material blank is processed.
- the features of claims 4 to 9 can be applied alone or in any combination to the method in which the material blank is processed.
- the method in which the material blank is processed can also be carried out with the described molding tool.
- the clamping device of the molding tool can be omitted for this and / or the positioning element described can also be provided.
- Figure 1 shows a packaging machine 1 according to an embodiment.
- the packaging machine 1 comprises a punching station 3 and a forming tool 5, both of which are provided on a machine frame 7.
- the punching station 3 comprises a punching tool upper part 9 and a punching tool lower part 11.
- a material web 13 is made by means of a
- Transport device 15 is removed from a supply roll 17 attached to machine frame 7 and fed to punching station 3.
- the conveying device 15 can, for example, comprise chains of clamps guided on both sides of the material web 13 on the machine frame 7 for holding the material web 13 in a clamped manner.
- the punching station 3 is configured to prepunch the material web 13.
- a sheet of material 19, which is part of the material web 13 is prepunched.
- Figure 2 shows a schematic plan view of a sheet of material 19 prepunched by the punching station 3. In the embodiment shown, this was also separated from the rest of the material web 13 during the prepunching. But this is not absolutely necessary. In addition, it would also be conceivable to feed the punching station 3 instead of the material web 13 already separated material sheets 19 for prepunching.
- the punching station 3 punches four partial areas 21 by incompletely punching out of the material sheet 19, so that the partial areas 21 each remain connected to a remaining area 25 of the material sheet 19 via several retaining lugs 23.
- the partial areas 21 each correspond to an area which is later formed into a packaging tray 27 with the molding tool 5.
- packaging trays 27 of the in Figure 3 Shown shape can be produced, that is, packaging trays 27 with a rectangular base 29 and outwardly tilted side walls 31.
- packaging tray 27 would also be conceivable, such as a packaging tray 27 with any polygon, a circle or an ellipse as the base 29
- the shape of the partial surfaces 21 of the sheet of material 19 that are not to be completely punched out can be adapted to the respectively desired shape of the packaging tray 27.
- the punching station 3 in each case incompletely punched out four partial areas 21 from a sheet of material 19.
- the molding tool 5 which is described below, four packaging trays 27 can be produced at the same time. It would of course also be conceivable to punch any other number of partial areas 21 incompletely from the sheet of material 19. In particular, it would also be conceivable to incompletely punch out only a partial area 21 from a sheet of material 19 and to produce the packaging trays 27 individually.
- the sheet of material 19 is transferred to the forming tool 5 for further processing.
- the pre-cut sheet of material 19 is over a Forming die 33 of the forming tool 5 positioned. In the embodiment shown, this takes place by further conveying the sheet of material 19 by means of the conveying device 15.
- the molding tool 5 comprises the molding die 33 and a cover part 35.
- Figure 4A shows a detail of the forming station 5 in an open operating state. In the open operating state, the molding die 33 and the cover part 35 are spaced apart from one another in such a way that the sheet of material 19 can be positioned between the molding die 33 and the cover part 35.
- the sheet of material 19 was already positioned over the molding die 33 by means of the conveying device 15 in such a way that the incompletely punched-out partial surfaces 21 of the sheet of material 19 each at least partially cover an opening 37 of an associated molding recess 39 of the molding die 33.
- a thermoplastic film layer 41 was also positioned over the sheet of material 19 on the side of the sheet of material 19 facing away from the molding die 33. In the embodiment shown, the thermoplastic film layer 41 is pulled off a corresponding supply roll 43 of the molding tool 5 (see FIG Figure 1 ).
- the molding tool 5 is closed by moving the molding die 33 and the cover part 35 towards one another.
- the resulting operating situation is in Figure 4B shown.
- the cover part 35 comprises a clamping device 45 which, in the embodiment shown, is designed as a grid which essentially corresponds to the shape of the remaining surface 25 of the sheet of material 19.
- the clamping device 45 clamps the remaining surface 25 of the sheet of material 19 against a contact surface 47 of the molding die 33.
- thermoplastic film layer 41 above the sheet of material 19 is also clamped by the clamping device 45 against the contact surface 47 of the molding die 33 and thus immobilized .
- an airtight interior space is preferably defined by the molding die 33 and the cover part 35 together with the sheet of material 19 clamped therebetween and the thermoplastic film layer 41 clamped between them.
- the molding tool 5 comprises height-adjustable inserts 49, one of which is in each case in a molding recess 39 of the molding die 33.
- the inserts 49 are each along a direction of travel V within the shape recesses 39 adjustable in height.
- the direction of travel V is parallel to the direction along which the molding die 33 and the cover part 35 of the molding tool 5 are moved relative to one another in order to close or open the molding tool 5.
- the height-adjustable inserts 49 are each shown in a starting position which corresponds to a maximally extended position. In the starting position, a mounting plate 51 of a height-adjustable insert 49 lies essentially at a height at which it is flush with the opening 37 of the corresponding molding recess 39 of the molding die 33.
- the height-adjustable inserts 49 each comprise channels 53 which end in openings formed in the holding plate 51 which face the sheet of material 19.
- the channels 53 are connected to a vacuum device 55 which is designed to suck the partial surfaces 21 of the sheet of material 19 to the holding plate 51 of the respective height-adjustable insert 49 by means of a vacuum applied through the channels 53.
- the partial surfaces 21 are in each case sucked in at least regionally by the vacuum device 55 on the corresponding height-adjustable insert 49 and held there.
- the partial surfaces 21 became when pulled into the respective mold recess 39 by engagement with side walls of the mold recess 39, in particular with bevels 57 of the mold recesses 39, which are located in Widen in the direction of the openings 37 of the recesses 39, shaped to form packaging trays 27. Since the remaining surface 25 of the sheet of material 19 is clamped against the contact surface 47 of the molding die 33 when the height-adjustable insert 49 is retracted, the retaining lugs 23 tear off when the partial surfaces 21 are pulled into the recesses 39 and the packaging trays 27 are separated from the remaining surface 25 of the sheet of material 19 .
- a heating device 59 is provided, which can be moved parallel to the direction of movement V of the height-adjustable inserts 49 towards the molding die 33 and away from the molding die 33.
- the heating device 59 is shown in a stowed position in which it is at a maximum within the cover part 35 has moved away from the molding die 33.
- the heating device 59 is moved from the stowed position onto the molding die 33 into a heating position, which is in the Figures 4C and 4D is shown. How out Figure 4C As can be seen, the heating device 59 is in the heating position adjacent to the thermoplastic film layer 41 and can heat it in such a way as to improve the deformability of the film layer 41.
- the heated thermoplastic film layer 41 is formed into the packaging trays 27 by using compressed air from the side of the film layer 41 facing away from the molding die 33.
- the molding tool 5 can comprise a compressed air device 61 which can introduce compressed air into the interior of the cover part 35 of the molding tool 5.
- the thermoplastic film layer 41 is molded into the packaging trays 27, as in FIG Figure 4D shown.
- the packaging trays 27 are provided with an inner layer of film. The provision of such a film layer is not absolutely necessary, however, and the thermoplastic film layer 41 could also be completely omitted.
- the thermoplastic film system 41 could alternatively also be connected to the packaging tray 27 in a separate work station downstream of the molding tool 5.
- Figure 5 shows, by way of example, four such material blanks 71 which have a shape such that packaging trays 27 of the FIG Figure 3 can be shaped from them.
- the material blanks 71 can be positioned over the molding die 33 of the molding tool 5 in such a way that they each at least partially cover an opening 37 of a molding recess 39 of the molding die 33.
- positioning elements 73 can be provided on the molding die 33, with which the material blanks 71 can be aligned. Such positioning elements 73 are in the Figures 4A to 4D shown in dashed lines as a possible modification.
- the clamping device 45 of FIG Forming station 5 can therefore be omitted as a modification. Otherwise, a forming station 5 of the type described above can be used.
- the material blanks 71 are each sucked by means of a vacuum by the vacuum device 55 onto the vertically movable insert 49 in the associated mold recess 39 of the molding die 33.
- the inserts 49 are then each moved from the starting position along the direction of travel V into the mold recess 39, the respective material blank 71 being drawn into the mold recess 39 and thus formed into a packaging tray 27.
- thermoplastic film layer 41 over the material blanks 71 over the molding die 33 and additionally, optionally, to shape the thermoplastic film layer 41 into the packaging trays 27 using compressed air from the compressed air device 61.
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
Claims (16)
- Procédé de production d'un emballage, comprenant les étapes ci-dessous de :fourniture d'une feuille de matériau (19) prédécoupée dont une surface partielle (21) n'est pas complètement découpée, de sorte que la surface partielle (21) est reliée à une surface restante (25) de la feuille de matériau (19) par l'intermédiaire de plusieurs pattes de retenue (23) ;positionnement de la feuille de matériau (19) prédécoupée au-dessus d'une matrice de moulage (33) d'un gabarit (5) de sorte que la surface partielle (21) de la feuille de matériau (19) recouvre au moins partiellement une ouverture (37) d'un creux de moulage (39) de la matrice de moulage (33) ;calage de la surface restante (25) de la feuille de matériau (19) contre une surface d'applique (47) de la matrice de moulage (33) ;aspiration de la surface partielle (21) de la feuille de matériau (19) au moyen d'une pression sous-atmosphérique au niveau d'un insert (49), pouvant être déplacé en hauteur dans le creux de moulage (39) de la matrice de moulage (33), dans une position de départ de l'insert pouvant être déplacé en hauteur (49) ; etdéplacement de l'insert pouvant être déplacé en hauteur (49) plus loin vers l'intérieur du creux de moulage (39) le long d'une direction de déplacement (V) depuis la position de départ, dans lequel la surface partielle (21) de la feuille de matériau (19) est attirée dans le creux de moulage (39) et est ainsi moulée pour devenir une barquette d'emballage (27).
- Procédé selon la revendication 1, dans lequel, lors du déplacement de l'insert pouvant être déplacé en hauteur (49) plus loin vers l'intérieur du creux de moulage (39) depuis la position de départ, les pattes de retenue (23) se déchirent et la surface partielle (21) est ainsi séparée de la surface restante (25) de la feuille de matériau (19).
- Procédé selon l'une quelconque des revendications précédentes, dans lequel la fourniture de la feuille de matériau (19) prédécoupée comprend le prédécoupage de la feuille de matériau (19) grâce à un découpage incomplet de la surface partielle (21) de la feuille de matériau (19) de sorte que la surface partielle (21) reste reliée à la surface restante (25) de la feuille de matériau (19) par l'intermédiaire de plusieurs pattes de retenue (23).
- Procédé selon l'une quelconque des revendications précédentes, dans lequel le creux de moulage (31) présente une dépouille (57) qui s'élargit en direction de l'ouverture (37).
- Procédé selon l'une quelconque des revendications précédentes, dans lequel le matériau de la feuille de matériau (19) ne peut essentiellement pas être moulé de manière thermoplastique.
- Procédé selon l'une quelconque des revendications précédentes, dans lequel le matériau de la feuille de matériau (19) comprend de la fibre naturelle, du carton et/ou du papier.
- Procédé selon l'une quelconque des revendications précédentes, dans lequel une couche de film (41) thermoplastique est positionnée au-dessus de la feuille de matériau (19) se trouvant au-dessus de la matrice de moulage (33).
- Procédé selon la revendication 7, dans lequel la couche de film (41) thermoplastique est moulée dans la barquette d'emballage (27) au moyen d'une application d'air comprimé depuis le côté de la couche de film (41) qui est opposé à la feuille de matériau (19).
- Procédé selon la revendication 7 ou 8, dans lequel la couche de film (41), après le positionnement de la couche de film (41) au-dessus de la feuille de matériau (19) se trouvant au-dessus de la matrice de moulage (33), est chauffée au moyen d'un dispositif de chauffage (59) présent sur le côté de la couche de film (41) qui est opposé à la matrice de moulage (33).
- Gabarit (5) permettant de produire un emballage à partir d'une feuille de matériau (19) qui a été prédécoupée grâce à un découpage incomplet d'une zone partielle (21) de la feuille de matériau (19) de telle manière que la surface partielle (21) reste reliée à une surface restante (25) de la feuille de matériau (19) par l'intermédiaire de plusieurs pattes de retenue (23), comprenant :une matrice de moulage (33) comprenant un creux de moulage (39) avec une ouverture (37) et une surface d'applique (47) ; etun dispositif de calage (45) conçu pour caler la surface restante (25) de la feuille de matériau (19) contre la surface d'applique (47) de la matrice de moulage (33) lorsque la feuille de matériau (19) prédécoupée est positionnée au-dessus de la matrice de moulage (33) de sorte que la surface partielle (21) de la feuille de matériau (19) recouvre au moins partiellement l'ouverture (37) du creux de moulage (39) de la matrice de moulage (33), dans lequelun insert pouvant être déplacé en hauteur (49), qui peut être déplacé plus loin vers l'intérieur du creux de moulage (39) le long d'une direction de déplacement (V) depuis une position de départ de l'insert pouvant être déplacé en hauteur (49), est prévu dans le creux de moulage (39) de la matrice de moulage (33), etle gabarit (5) comprend en outre un dispositif à pression sous-atmosphérique (55) qui est conçu pour aspirer la surface partielle (21) de la feuille de matériau au moyen d'une pression sous-atmosphérique au niveau de l'insert pouvant être déplacé en hauteur (49).
- Gabarit selon la revendication 10, dans lequel le creux de moulage (39) présente une dépouille (57) qui s'élargit en direction de l'ouverture (37).
- Gabarit selon la revendication 10 ou 11, comprenant en outre un dispositif à air comprimé (61) qui est configuré pour soumettre une couche de film (41) thermoplastique positionnée au-dessus de la feuille de matériau (19) se trouvant au-dessus de la matrice de moulage (33) à une application d'air comprimé en direction de la feuille de matériau (19) depuis le côté de la couche de film (41) qui est opposé à la feuille de matériau (19).
- Gabarit selon la revendication 12, comprenant en outre un dispositif de chauffage (59) qui est conçu pour chauffer la couche de film (41) depuis le côté, opposé à la matrice de moulage (33), de la couche de film (41) après le positionnement de la couche de film (41) au-dessus de la feuille de matériau (19) se trouvant au-dessus de la matrice de moulage (33).
- Gabarit selon la revendication 13, dans lequel le dispositif de chauffage (59) peut être déplacé de manière à aller vers la matrice de moulage (33) et de manière à s'éloigner de la matrice de moulage (33), parallèlement à la direction de déplacement (V) de l'insert pouvant être déplacé en hauteur (49).
- Machine d'emballage (1), comprenant :une station de découpage (3) qui est configurée pour prédécouper la feuille de matériau (19) grâce à un découpage incomplet de la surface partielle (21) de la feuille de matériau (19), de sorte que la surface partielle (21) reste reliée à la surface restante de la feuille de matériau (25) par l'intermédiaire de plusieurs pattes de retenue (23), etle gabarit (5) permettant de produire un emballage à partir de la feuille de matériau (19), selon l'une quelconque des revendications 10 à 14.
- Machine d'emballage selon la revendication 15, présentant en outre un dispositif de transport (15) qui est configuré pour positionner la feuille de matériau (19) prédécoupée par la station de découpage (3) au-dessus de la matrice de moulage (33) du gabarit (5) de sorte que la surface partielle (21) de la feuille de matériau (19) recouvre au moins partiellement l'ouverture (37) du creux de moulage (39) de la matrice de moulage (33).
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17203560.2A EP3489005B1 (fr) | 2017-11-24 | 2017-11-24 | Outil de moulage et procédé de fabrication d'un emballage |
ES17203560T ES2839574T3 (es) | 2017-11-24 | 2017-11-24 | Herramienta de moldeo y procedimiento para fabricar un envase |
US16/196,476 US10889079B2 (en) | 2017-11-24 | 2018-11-20 | Forming tool and method for producing a packaging |
CN201821943871.7U CN209290813U (zh) | 2017-11-24 | 2018-11-23 | 成形工具和包装机 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17203560.2A EP3489005B1 (fr) | 2017-11-24 | 2017-11-24 | Outil de moulage et procédé de fabrication d'un emballage |
Publications (2)
Publication Number | Publication Date |
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EP3489005A1 EP3489005A1 (fr) | 2019-05-29 |
EP3489005B1 true EP3489005B1 (fr) | 2020-10-07 |
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Application Number | Title | Priority Date | Filing Date |
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EP17203560.2A Active EP3489005B1 (fr) | 2017-11-24 | 2017-11-24 | Outil de moulage et procédé de fabrication d'un emballage |
Country Status (4)
Country | Link |
---|---|
US (1) | US10889079B2 (fr) |
EP (1) | EP3489005B1 (fr) |
CN (1) | CN209290813U (fr) |
ES (1) | ES2839574T3 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021112475A1 (de) | 2021-05-12 | 2022-11-17 | Illig Maschinenbau Gmbh & Co. Kg | Vorrichtung und Verfahren zur Dekoration von Formteilen aus thermoplastischer Kunststofffolie mit Zuschnitten und ein nach dem Verfahren hergestelltes dekoriertes Formteil |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021109913A1 (de) | 2021-04-20 | 2022-10-20 | Multivac Sepp Haggenmüller Se & Co. Kg | Verschließen einer Verpackungsschale mit mehreren Materialschichten |
DE102022106782A1 (de) * | 2022-03-23 | 2023-09-28 | Multivac Sepp Haggenmüller Se & Co. Kg | Handhabung von kartonzuschnitten |
CN114801320B (zh) * | 2022-05-16 | 2023-05-26 | 山东大学 | 一种纸板冲压成形装置及方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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US3933562A (en) * | 1970-07-13 | 1976-01-20 | United States Steel Corporation | Method of laminating a plastic sheet onto a surface of a hollow body |
SE340944B (fr) * | 1971-06-01 | 1971-12-06 | Akerlund & Rausing Ab | |
WO1987001330A1 (fr) * | 1985-08-30 | 1987-03-12 | Garwood Ltd. | Barquette amelioree pour emballage |
US5217563A (en) * | 1988-12-01 | 1993-06-08 | Bayer Aktiengesellschaft | Apparatus for producing a deep-drawn formed plastic piece |
US5253801A (en) * | 1992-12-22 | 1993-10-19 | International Paper Company | Multi sided food tray |
US5418022A (en) * | 1993-06-01 | 1995-05-23 | Minnesota Mining And Manufacturing Company | Method of forming a pocket from a spunbonded olefin sheet and a microbial resistant package produced thereby |
US9364975B2 (en) * | 2012-09-07 | 2016-06-14 | Global Ip Holdings, Llc | Method of molding composite plastic sheet material to form a compression molded, deep-drawn article |
DE102013107931A1 (de) | 2013-07-24 | 2015-01-29 | Pester Pac Automation Gmbh | Vorrichtung zum Umformen eines flachliegenden Materials |
DE102014106427A1 (de) * | 2014-05-08 | 2015-11-12 | Technische Universität Dresden | Verfahren und Vorrichtung zur Herstellung von Formteilen aus einer Faserwerkstoffbahn |
-
2017
- 2017-11-24 EP EP17203560.2A patent/EP3489005B1/fr active Active
- 2017-11-24 ES ES17203560T patent/ES2839574T3/es active Active
-
2018
- 2018-11-20 US US16/196,476 patent/US10889079B2/en active Active
- 2018-11-23 CN CN201821943871.7U patent/CN209290813U/zh active Active
Non-Patent Citations (1)
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None * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021112475A1 (de) | 2021-05-12 | 2022-11-17 | Illig Maschinenbau Gmbh & Co. Kg | Vorrichtung und Verfahren zur Dekoration von Formteilen aus thermoplastischer Kunststofffolie mit Zuschnitten und ein nach dem Verfahren hergestelltes dekoriertes Formteil |
Also Published As
Publication number | Publication date |
---|---|
EP3489005A1 (fr) | 2019-05-29 |
ES2839574T3 (es) | 2021-07-05 |
CN209290813U (zh) | 2019-08-23 |
US10889079B2 (en) | 2021-01-12 |
US20190160775A1 (en) | 2019-05-30 |
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