EP4261029A1 - Maschine zur herstellung einer kartonschale - Google Patents

Maschine zur herstellung einer kartonschale Download PDF

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Publication number
EP4261029A1
EP4261029A1 EP22168670.2A EP22168670A EP4261029A1 EP 4261029 A1 EP4261029 A1 EP 4261029A1 EP 22168670 A EP22168670 A EP 22168670A EP 4261029 A1 EP4261029 A1 EP 4261029A1
Authority
EP
European Patent Office
Prior art keywords
robot
tray
frames
trays
blanks
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.)
Pending
Application number
EP22168670.2A
Other languages
English (en)
French (fr)
Inventor
Daniele Bellante
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.)
CAMA1 SpA
Original Assignee
CAMA1 SpA
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 CAMA1 SpA filed Critical CAMA1 SpA
Priority to EP22168670.2A priority Critical patent/EP4261029A1/de
Publication of EP4261029A1 publication Critical patent/EP4261029A1/de
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • 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
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/62—Uniting opposed surfaces or edges; Taping by adhesives
    • B31B50/624—Applying glue on blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/002—Making boxes characterised by the shape of the blanks from which they are formed
    • B31B2105/0024—Making boxes 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
    • B31B2110/10—Shape of rigid or semi-rigid containers having a cross section of varying size or shape, e.g. conical or pyramidal
    • 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
    • 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
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/002—Construction of rigid or semi-rigid containers having contracted or rolled necks, having shoulders
    • 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
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/50—Construction of rigid or semi-rigid containers covered or externally reinforced
    • 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
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/502—Construction of rigid or semi-rigid containers having integral corner posts or reinforcements
    • 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
    • B31B50/04—Feeding sheets or blanks
    • B31B50/042—Feeding sheets or blanks using rolls, belts or chains
    • 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
    • B31B50/04—Feeding sheets or blanks
    • B31B50/06—Feeding sheets or blanks from stacks

Definitions

  • the present invention relates to the field of packaging machines.
  • the invention relates to a machine for making paper or paperboard trays.
  • Paper or paperboard packaging trays are industrially produced from flat blanks.
  • the blank takes on the shape of the tray by an operation, known as forming, which generally involves coupling a male forming member with a female die.
  • paperboard packaging is growing strongly as a result of the drive to eliminate, or at least reduce, plastic in accordance with the objective of making packaging environmentally friendly and recyclable.
  • paper or paperboard is not always suitable for containing the product, especially a food product and/or one that tends to release liquids.
  • Packaging articles such as trays or tubs, with a paperboard structure and a barrier film covering the surface in direct contact with the product are known.
  • the barrier material is not always environmentally friendly (e.g. it is typically a plastic material) and therefore, in this type of packaging, there is an incentive to reduce the amount of barrier material to the bare minimum.
  • a known type of paperboard tray obtained by forming a blank, has a tub-like part essentially bounded by a bottom and side walls, and a series of perimeter tabs which extend out from the upper edges of the side walls to form a kind of frame.
  • the barrier film is typically applied to said perimeter tabs and covers the inside walls and bottom of the tub.
  • barrier film to this type of tray, however, poses some technical problems: however precise the forming step, the tabs are almost never aligned in the same plane and moreover there are inevitably gaps between them.
  • the tabs are folded along the joint edge with the walls, along fold lines provided in the original blank, but the folding angle may diverge slightly from the desired angle, causing the edges of adjacent tabs to be misaligned.
  • the frame defined by the tabs takes the form of a non-planar surface with discontinuities due to gaps and misalignments between the tabs.
  • Such a surface is obviously not ideal for application of the barrier film.
  • the irregularities force the use of a relatively thick film to compensate for the shape defects of the tray, but this requires the introduction of a higher amount of barrier material into the packaging calculation, contrary to the objective stated above.
  • a closed-loop frame also made of paperboard, to the inner faces of the tabs.
  • This imparts rigidity and flatness to the upper frame of the tray, substantially eliminates play and misalignment between the tabs, facilitates application of the film and makes it possible to reduce the thickness of the film. Since the frame is made of paperboard, it does not worsen the eco-compatibility of the packaging.
  • the invention addresses the problem of providing a machine suitable for quick and accurate production of a packaging article of the type described above comprising a paperboard tub with perimeter tabs and a frame element applied to said perimeter tabs.
  • the machine comprises a robot which is configured to receive a blank or preferably a group of blanks; to perform a forming operation resulting, for each blank, in a paperboard tray due to the cooperation between a forming member associated with the robot and an appropriate die; to transfer the trays to a coupling station where a paperboard frame is arranged for each tray; to position the trays, in the coupling station, so as to apply a respective frame to the perimeter tabs of each tray.
  • the trays remain in a relationship of engagement with the forming device associated with the robot.
  • the trays only separate from the forming device mounted on the robot after application of the frame when the assembled trays complete with frames are delivered to an appropriate output conveyor.
  • the idea behind the invention is therefore to maintain the centring of the tray with respect to the robot, which has been obtained during tray forming, even during the subsequent frame application step.
  • the engagement between the tray and the robot is preferably maintained by a vacuum system.
  • the great advantage of the invention is that there is no need for a new tray centring operation prior to coupling to the frame itself. Since at the end of the forming process the tray remains fitted to the forming device of the robot, the position of the tray is precisely known and the machine (by means of the robot control system) can align it correctly with the frames. This makes production faster and more precise.
  • the invention it is possible to use a frame having a size precisely corresponding to the size of the tray thus resulting in an improved strengthening effect and flatness of the barrier film application surface. It is therefore possible to use a barrier film of small thickness, i.e. with the minimum thickness sufficient to achieve the desired product containment effect.
  • the invention also provides a method according to the claims.
  • a machine comprises a first magazine which is arranged to accommodate flat blanks intended to form the trays and a second magazine which is arranged to accommodate paperboard frames, shaped as a closed loop, to be applied to the trays.
  • Said magazines are made using technology known in the packaging machine sector and are therefore not described in detail.
  • a machine further comprises a tray forming station; a station for coupling frames with trays; at least one robot operating between the various stations.
  • the tray forming station comprises a die suitable for cooperating with a forming device mounted on the robot.
  • Said forming device preferably operates as a male element while the die operates as a female seat in the process of forming the tray from the blank.
  • the forming device is provided with one or more forming punches each being able to create an individual tray from a blank.
  • the forming process defines a tray with a bottom and side walls, usually rectangular or essentially rectangular in shape, although more complex shapes are possible.
  • the tray also comprises perimeter tabs extending from the upper edges of the walls.
  • the robot carries a former which has first lateral inclined surfaces and the die has second lateral inclined surfaces conjugate with said first surfaces.
  • the forming member of the robot has one or more heads (one for each individual blank) having an essentially truncated-pyramidal shape.
  • the machine is equipped with a blank feeding system. Said system is arranged to extract the blanks from said first magazine and convey them to a pick-up zone accessible to said robot, or directly to the forming zone.
  • Said blank feeding system advantageously comprises a member configured to extract the blanks from the magazine and a conveyor member (first conveyor member).
  • the extraction member can comprise arms equipped with vacuum suction cups similar to the "sheet feeder" members normally used in packaging machines.
  • Said first conveyor member is preferably a transfer member, i.e. with an essentially back-and-forth movement with a linear stroke.
  • said first conveyor member has an essentially planar plate shape and may be provided with appropriate stops to hold the blanks in position.
  • said conveyor member operates by moving between a location for receiving the blanks from the magazine (for example from the described extraction member) and a location for delivery to the robot.
  • Said delivery location may for example be intermediate between the magazine and the forming zone.
  • the robot picks up the blanks from the conveyor member by means of a vacuum system.
  • the conveyor member reaches the forming zone directly, i.e. there is no intermediate transfer of the blanks.
  • the conveyor member which for example as mentioned above is a transfer plate, is positioned above the forming die and has appropriate windows to enable passage of the former associated with the robot.
  • the trays are formed with the blanks still loaded on the conveyor member.
  • the choice of one or the other of the above options may depend on the size and/or complexity of the blank.
  • the option of direct conveying to the forming zone may be preferable; for larger and/or complex blanks in which forming also comprises ancillary operations such as folding and gluing flaps to be performed by means of additional mobile devices, the option of intermediate delivery to the robot may be preferable because the conveyor member might get in the way of the sub-systems of the forming zone.
  • Said second feeding system for example comprises a member for extracting the frames from the magazine and a dedicated conveyor member (second conveyor member).
  • the extraction member is configured to deliver the frames to the conveyor member; the latter is configured to carry the frames to the coupling station.
  • said conveyor member comprises means for gripping the perimeter of the frames and through-openings for the forming members of the robot.
  • the conveyor member thus can accommodate the forming members of the robot (with which the trays are associated) during the frame application step.
  • Said second conveyor member is advantageously a transfer member.
  • the second conveyor member like the first described above, can also be made in the form of a plate.
  • the machine is configured to collectively process a plurality of trays and associated frames, with a plurality of assembled trays provided with frames being obtained for each production cycle.
  • the forming device associated with the robot is a multiple former suitable for receiving and processing a plurality of blanks.
  • the forming station die comprises a corresponding plurality of forming seats.
  • the blank feeding system and the paperboard frame feeding system can be configured to arrange a set of blanks and a set of frames respectively in the blank pick-up zone and in the coupling station such that the arrangement of blanks in the blank pick-up zone, generated by the respective feeding system, is suitable for engaging the blanks with the former of the robot, and that the arrangement of the frames in the coupling zone, generated by the respective feeding system, is suitable for coupling with the trays in engagement on the former of the robot.
  • the set of blanks and the set of frames are represented by rows in which the blanks and frames are aligned with appropriate spacing.
  • the frames are preferably applied to the perimeter tabs of the trays by gluing.
  • the machine can comprise appropriate means for dispensing an appropriate amount of glue onto the blanks and/or frames.
  • a particularly preferred embodiment provides an array of first glue dispensers which are arranged along the path of the first conveyor member (operating with the blanks).
  • An array of second glue dispensers is further provided which are arranged along the path of the second conveyor member (operating with the frames).
  • Said glue dispensers can be represented by dispensing guns or glue sprayers of a known type.
  • the glue dispensers are arranged along the path of respective transfer plates; in a preferred embodiment each of the transfer plates (respectively dedicated to conveying blanks and frames) passes under the respective array of glue dispensers.
  • the first dispensers dispense a quantity of glue which will be used to join flaps or other parts of the blank so that the tray retains the three-dimensional shape imparted to it;
  • the second dispensers dispense a quantity of glue which will be used to join the frames to the edges of the trays.
  • robot is used in a general sense to refer to a robot or manipulator capable of transferring trays, individually or in groups, from one location to another within the machine. Said robot advantageously has two or more degrees of freedom.
  • said robot comprises: a fixed base associated with the machine frame; a first arm (also referred to as a "link") pivoted about a first axis with respect to said base; a second arm pivoted about a second axis with respect to said first arm; a wrist pivoted about a third axis with respect to said second arm.
  • the forming device is preferably mounted on said wrist.
  • said axes are horizontal axes.
  • the robot preferably operates from above, i.e. the base of the robot is fixed to the upper part of the machine frame. In any event, the robot can be made using per se known technology while remaining within the scope of the present invention.
  • the machine frame preferably has a modular structure essentially composed of longitudinal beams, cross beams and columns which may contain electrical, electronic or pneumatic parts.
  • the robot is advantageously configured to place the assembled trays, after coupling with the frame, on an output conveyor.
  • Said conveyor is, for example, a conveyor belt.
  • the robot grips the trays preferably with a vacuum system.
  • the trays are preferably released onto the output conveyor using vacuum reversal technology.
  • the vacuum system (associated with the robot) comprises a chamber which, when the system is under vacuum, accumulates a slight positive pressure (generally created by a Venturi system).
  • a preferred arrangement of the machine is essentially longitudinal in which:
  • Said arrangement is optimal for space utilisation and process flow management.
  • the conveying directions of the blanks and frames converge towards a central part of the machine where the tray forming operations with centring, frame application and delivery of the assembled framed trays to the output conveyor take place.
  • the output conveyor more preferably has a transverse conveying direction. Accordingly, the machine is fed at both ends with blanks and paperboard frames and has a central/transverse output for assembled trays.
  • the robot can be configured to place the assembled trays directly on another production line or production machine adjacent to the machine of the invention.
  • the machine achieves the goals and solves the problem stated above in that it enables precise and efficient production of trays with a reinforcing frame.
  • the invention also provides a method as defined in the claims.
  • the method is advantageously performed in a machine as described above.
  • the method is directed by a machine control system which manages the robot and the various sub-systems including magazine extraction members, conveyor members, glue applicators.
  • machine 1 for forming paperboard trays comprises the following main elements:
  • the magazine 2 contains a number of flat blanks 101 ( Fig. 2 ), each of which is arranged to be folded to form a tray.
  • the extraction member 9 picks up a group of blanks and deposits them on the transfer plate 10.
  • Said group of blanks is for example represented by a row 100 as shown in Fig. 9 .
  • the transfer plate 10 preferably comprises retaining strikers arranged to hold the blanks in place once deposited on the plate itself.
  • the transfer plate 10 has a back-and-forth movement between a position for receiving the blanks by the member 9 and a position for delivering the blanks to the robot 7, more specifically in the pick-up zone indicated by reference 4.
  • Glue sprayers 15 are placed along the path of the plate 10 and (as the plate 10 loaded with blanks passes by) dispense glue onto specific portions of the blanks to enable the tray walls to be closed, for example by gluing the tabs 106 ( Fig. 10 ) to the sides of the tray. Thanks to the glue applied by the sprayers 15, the tray will retain the three-dimensional shape imparted by coupling between the forming member 13 and the die 14.
  • the member 11 picks up the frames from the magazine 3 and loads them onto the transfer plate 12, which carries the frames to the coupling station 6.
  • the glue sprayers 16 apply an appropriate amount of glue to the frames which will be used for adhering the frames to the perimeter edges of the trays.
  • the frames have, for example, the shape shown in Fig. 11 .
  • pre-breaking operations may be carried out on the internal edges if necessary (to facilitate tray formation).
  • the machine may be equipped with suitable devices for said edge pre-breaking operations in accordance with this requirement.
  • the robot 7 carries a multi-head former 13 capable of simultaneously processing the row of blanks carried by the plate 12.
  • the former 13 is associated with a robot end 70 (see also Fig. 6 ).
  • Fig. 2 shows the robot 7 in a position suitable for picking up the blanks originating from the magazine 2 and conveyed by the plate 10.
  • the robot is equipped with vacuum gripping members, such as suction cups or equivalent, which allow the blanks to be lifted from the plate 10.
  • Fig. 3 shows the robot 7 positioned in the tray forming station 5.
  • a downwards movement of the former 13 in coupling with the die 14 imparts the desired tray shape to the blank, as will be illustrated in more detail below.
  • the robot 7 moves to the station 6 ( Fig. 4 ). During this transfer (i.e. leaving the engagement with the die 14 and moving towards station 6) the gripping members of the robot 7 constantly maintain the vacuum which grips the trays in a relationship of engagement with the former 13 so as to maintain the correct centring.
  • a row 200 of frames 201 (see Fig. 9 ) originating from the magazine 3 and already sprayed with glue as a result of the plate 12 passing under the sprayers 16 is arranged in station 6.
  • the robot brings itself into alignment with the row of frames and with a downwards movement precisely fits the frames onto the trays. It should be noted that the frames do not leave the plate 12 and said plate 12 has appropriate through-windows to accommodate the forming member 13 until the edges of the trays are in contact with the frames.
  • Fig. 5 shows the machine in the set-up in which the assembled trays (i.e. complete with frame) are delivered to the output conveyor 8.
  • output proceeds transversely of the machine, i.e. in a direction perpendicular to the drawing plane.
  • vacuum gripping members are controlled to release the trays.
  • a vacuum reversal system (known per se) is provided to create a slight overpressure to facilitate separation of the trays from the former 13.
  • Figs. 6 and 7 show further details of a preferred embodiment, with reference to robot 7 and die 14.
  • the former 13 has a plurality of heads 130 and each of said heads 130 has an essentially truncated-pyramidal shape with side surfaces 131 inclined and converging downwards; the die 14 has a plurality of seats 140, each suitable for accommodating one of the heads 130; around the seats 140 there are a series of cams 142 provided with side surfaces 141 inclined and conjugate with the surfaces 131.
  • the cams 142 can be adjustable to adapt the seat 140 to a format change and can be mobile (with controlled movement, coordinated with the descent of the former of the robot 13) to perform operations auxiliary to the composition of the tray.
  • the blank is wrapped around the truncated-pyramidal head 130 to create the desired tray.
  • the glue previously sprayed from the array of dispensers 15 grips and "closes" the tray by, for example, attaching the tabs 106 to the sides 104 ( Fig. 10 ).
  • Fig. 8 shows a tray 102, shown with dotted line, which is in engagement with a head 130.
  • the tray 102 is gripped by the described vacuum gripping members.
  • Fig. 9 The operation of the machine in Fig. 1 is further illustrated in Fig. 9 .
  • the extraction member 9 delivers a row 100 of flat blanks 101 to the transfer plate 10.
  • the row 100 reaches the pick-up zone 4 (receiving the glue while passing under the array of sprayers 15) where it is taken over by the robot 7.
  • the former 13 is not shown in Fig. 9 for simplicity.
  • the extractor member 11 On the opposite side of the machine, the extractor member 11 generates a row 200 of frames 201.
  • the frames 201 are correspondingly spaced apart from the blanks 101 to interface properly with the robot 7. In other words, the row 100 and the row 200 have the same spacing pitch. Note in station 6 the row 202 of frames already provided with glue ready for joining with the trays.
  • the trays 102 remain in engagement with the forming device 13 in the manner illustrated in Fig. 8 .
  • the robot 7 then moves to station 6 where the trays 102 are aligned with the underlying row 202 of frames (provided with glue) and by means of an essentially vertical downwards movement of the robot, the frames are fitted onto the trays until they are glued to the perimeter edge tabs.
  • a set 300 of assembled trays 301 (complete with frame) is obtained and delivered to the output conveyor 8.
  • the embodiment of the figures provides for the robot 7 to transfer the blanks from the transfer plate 10 ( Fig. 2 ) to the forming zone 5.
  • the transfer plate 10 directly to reach the forming zone 5 by moving over the die 14.
  • the robot 7 acts on the blanks while they are still loaded on the plate 10.
  • the plate 10 has appropriate windows to allow the passage of the forming member 13 which will engage with the underlying die 14.
  • FIGs. 10-13 show an example of a paperboard tray (or tub) which can be produced with the machine of the present invention.
  • Fig. 10 shows an exemplary embodiment of a tray or tub 102 comprising a bottom 103, long side walls 104 and short side walls 105, and perimeter tabs 106, 107 extending outside the edges of the walls 104, 105.
  • the short walls 105 have tabs 108 which fold down and become glued to the long walls 104.
  • Fig. 10 shows the tray 102 in an inverted position, see also Fig. 13 .
  • the bottom and side walls define a tub for containing a product, for example a food product.
  • Fig. 11 shows a closed-loop frame 201 essentially formed of two long sides 205 and two short sides 206.
  • the frame 201 comprises two tabs 202 extending from the short sides 206 towards the interior of the frame itself, intended to adhere to the short side walls 105 ( Fig. 12 ).
  • tabs 202 have a trapezoidal shape.
  • the frame 201 defines an opening 203 that allows the frame to be applied to the bottom 103 of the tray until the sides 205 and 206 are brought into line with the tabs 106, 107.
  • Fig. 12 shows an assembled tray 301 (seen from below), obtainable by applying the frame 201 to the tray 102. Observing this figure, it is possible to note the positioning precision required by the coupling between the frame and the display, which is obtained thanks to the invention.
  • Fig. 13 shows the tray 301 from above, it is possible to note the compartment 302 (for containing the product) which substantially follows the shape of the truncated pyramidal head 130.
  • the corners of the tray 301 are formed correctly without coupling errors thanks to the underlying frame 201 which joins the perimeter edge tabs together and creates a uniform plane.

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EP22168670.2A 2022-04-15 2022-04-15 Maschine zur herstellung einer kartonschale Pending EP4261029A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22168670.2A EP4261029A1 (de) 2022-04-15 2022-04-15 Maschine zur herstellung einer kartonschale

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22168670.2A EP4261029A1 (de) 2022-04-15 2022-04-15 Maschine zur herstellung einer kartonschale

Publications (1)

Publication Number Publication Date
EP4261029A1 true EP4261029A1 (de) 2023-10-18

Family

ID=81877732

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EP22168670.2A Pending EP4261029A1 (de) 2022-04-15 2022-04-15 Maschine zur herstellung einer kartonschale

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533065A (en) * 1980-07-11 1985-08-06 Societe Parisienne D'impression Et De Cartonnage Container having one piece peripheral rim, at least two cardboard parts and a synthetic material layer
DE19828381A1 (de) * 1998-06-25 1999-12-30 Jochen Dietrich Lebensmittelverpackung sowie Verfahren, Zuschnitt und Vorrichtung zu deren Herstellung
JP2009142995A (ja) * 2007-12-11 2009-07-02 Morinaga & Co Ltd トレーの成形供給方法及びトレーの成形供給装置
EP2363280A1 (de) * 2010-03-05 2011-09-07 All Glass S.r.l. Maschine und Verfahren zur Herstellung von Trayverpackungen
JP2016010978A (ja) * 2015-09-09 2016-01-21 大森機械工業株式会社 製函装置

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JP2009142995A (ja) * 2007-12-11 2009-07-02 Morinaga & Co Ltd トレーの成形供給方法及びトレーの成形供給装置
EP2363280A1 (de) * 2010-03-05 2011-09-07 All Glass S.r.l. Maschine und Verfahren zur Herstellung von Trayverpackungen
JP2016010978A (ja) * 2015-09-09 2016-01-21 大森機械工業株式会社 製函装置

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