EP1470909B1 - Dispositif et procédé de pliage pour la mise en forme d'un carton - Google Patents

Dispositif et procédé de pliage pour la mise en forme d'un carton Download PDF

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Publication number
EP1470909B1
EP1470909B1 EP04003136A EP04003136A EP1470909B1 EP 1470909 B1 EP1470909 B1 EP 1470909B1 EP 04003136 A EP04003136 A EP 04003136A EP 04003136 A EP04003136 A EP 04003136A EP 1470909 B1 EP1470909 B1 EP 1470909B1
Authority
EP
European Patent Office
Prior art keywords
opening
punch
folding
female mould
carton blank
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.)
Expired - Lifetime
Application number
EP04003136A
Other languages
German (de)
English (en)
Other versions
EP1470909A2 (fr
EP1470909A3 (fr
Inventor
Bodo Tönnigs
Klaus KRÖHNERT
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.)
Homag Automation GmbH
Original Assignee
Ligmatech Automationssysteme GmbH
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 Ligmatech Automationssysteme GmbH filed Critical Ligmatech Automationssysteme GmbH
Publication of EP1470909A2 publication Critical patent/EP1470909A2/fr
Publication of EP1470909A3 publication Critical patent/EP1470909A3/fr
Application granted granted Critical
Publication of EP1470909B1 publication Critical patent/EP1470909B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • 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
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/30—Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing
    • 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
    • B31B50/46—Folding sheets, blanks or webs by plungers moving through folding dies and interconnecting side walls
    • 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
    • B31B50/73—Uniting opposed surfaces or edges; Taping by mechanically interlocking integral parts, e.g. by tongues and slots
    • B31B50/732—Uniting opposed surfaces or edges; Taping by mechanically interlocking integral parts, e.g. by tongues and slots by folding or tucking-in locking flaps
    • 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
    • B31B50/73—Uniting opposed surfaces or edges; Taping by mechanically interlocking integral parts, e.g. by tongues and slots
    • B31B50/732—Uniting opposed surfaces or edges; Taping by mechanically interlocking integral parts, e.g. by tongues and slots by folding or tucking-in locking flaps
    • B31B50/734—Uniting opposed surfaces or edges; Taping by mechanically interlocking integral parts, e.g. by tongues and slots by folding or tucking-in locking flaps interengaging tongues and slots
    • 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
    • B31B50/76—Opening and distending flattened articles

Definitions

  • the present invention relates to methods of forming a carton from a pre-grooved carton blank. Furthermore, the present invention relates to a device for carrying out this method with a die, which defines an opening, and a stamp, which is at least partially insertable into the opening.
  • folding devices are those that operate on the Matritzen- or thermoforming principle.
  • the applicant has been using folding devices for some time, which have a die which defines an opening and a die which is at least partially insertable into the opening.
  • the known folding devices have tiltable or pivotable folding elements in order to fold inner straps, which can not be brought into their folded position by means of the punch stroke, by means of a tilting movement.
  • This object is achieved according to the present invention by a method of forming a carton from a pre-grooved carton blank having the features of claim 1.
  • the present invention is based on the idea of concentrating the formation of a folded box from a pre-scored carton blank as far as possible on functions of the punch in order to simplify the procedure as well as the required apparatus for carrying out the method.
  • the invention provides that the stamp takes on tasks that are performed in the prior art of additional folding elements. More specifically, it is provided in the method according to the invention that the stamp having two printing elements is withdrawn after a first insertion into the opening of a die to adjust the spacing of the printing elements in at least one direction and then a second insertion of the stamp in the opening of the die be made such that the carton blank is folded at least in sections.
  • the spacing of the printing elements after the second insertion is adjusted at least in one direction, in order thereby to effect a folding process.
  • the punch thus has a double folding function, namely on the one hand during its insertion into the opening of the die and on the other hand by means of adjusting its own dimensions whereby a wide variety of folding operations can be made on the pre-grooved carton blank. It is particularly preferred that the distance of the printing elements after the second insertion is increased. As a result, portions or tabs of the carton blank that are prefolded during the second insertion of the punch, can be brought in a simple and timely manner in its final folded position.
  • tabs of the carton blank are folded or prefolded such that they interpose the opening of the die and the stamp come to rest. This makes it possible that the stamp can optimally absorb and fold the respective tabs at its second insertion, without jamming of the tabs or damage to the carton blank occurs.
  • the use of a folding device with the features of claim 4 is preferred according to the present invention.
  • the stamp has at least two printing elements, the distance is adjustable, and in particular also while the stamp is at least partially inserted into the opening of the die.
  • the stamp is given a simple, but variable construction, whereby the printing elements can easily be matched in their geometry to the desired folding functions.
  • the at least two pressure elements are movable relative to one another in at least one direction, in particular also while the punch is at least partially inserted into the opening of the die.
  • a device with a simple construction is provided with which the method according to the invention can be advantageously carried out.
  • no additional folding elements or only comparatively simple, additional folding elements are required in the device according to the invention, which considerably simplifies not only the construction but also the control of the device.
  • the die is formed by at least two frame elements, which are connected to each other by means of adjusting elements, in particular sliding pieces, such that the dimensions of the opening of the die are adjustable.
  • the variability of the folding device according to the invention is further increased by the folding device is easily adaptable to changing geometries of the carton blank or the carton to be formed.
  • the die is formed by at least four rod-shaped frame elements which define the opening of the die and are connected to each other by means of adjusting elements, in particular sliding pieces, such that the dimensions of the opening of the die are adjustable.
  • This modular design has proven to be very flexible and at the same time cost effective in practice.
  • the adjusting elements with respect to the opening of the die in the direction protrude the punch and preferably have a wedge-shaped section.
  • This makes it possible to put the pre-grooved cardboard blank between the punch and die opening, for example by means of a gripping device, that when inserting the carton blank already some tabs of the same are prefolded by the wedge-shaped section.
  • the number of possible folding operations is further increased by means of a simple static component, without making the construction and control of the device more complex.
  • the folding device in the case of complex carton blanks or folding cartons, it may be necessary to pre-fold individual tabs of the carton blank in the course of the overall process such that they come to rest between the punch and die opening, in order subsequently to be folded by a stroke movement of the stamp.
  • the folding device it is preferred according to a development of the folding device according to the invention that it has a pre-folding, which is linearly movable and by means of the individual tabs of the cardboard section are foldable so that they come to rest between the punch and the remaining carton blank.
  • the pre-folding device is only linearly movable, and not necessarily tiltable, which keeps the construction and control of the device simple.
  • the folding device has a counter-pressure device which is arranged on the side of the die opposite the punch.
  • a dimensionally stable folding box can be formed by an interaction of punch and counter-pressure device.
  • Fig. 1 schematically shows a folding device 1 for forming a folding box 2 'from a pre-grooved carton blank 2.
  • the folding device 1 comprises a die 4, which defines an opening 6, and a punch 8, which is at least partially insertable into the opening 6.
  • the punch 8 has in the present embodiment, two pressure elements 10, 12, whose mutual distance in the direction of the in Fig. 1d ) shown arrow 6, wherein the entire punch in the direction of in Fig. 1d ) shown arrow 5 is movable.
  • the die 4 is formed in the present embodiment by four rod-shaped frame members 14, 16, 18, 20, wherein the frame member 20 in Fig. 1 is covered by the frame member 18.
  • the frame members 14, 16, 18, 20 define the opening 6 of the die 4 and are interconnected by means of sliding pieces 22 such that the dimensions of the opening 6 of the die 4 are adjustable.
  • the adjustment of the frame members 14, 16, 18, 20 can be done manually by means Spindles etc. or automated by means of actuators etc.
  • the sliding pieces 22 are formed so as to protrude from the opening 6 of the die 4 in the direction of the punch 8, a wedge-shaped portion 22 'being provided in the region of the projection.
  • the folding device 1 comprises a pre-folding device 24, which is linear along the in Fig. 1c ) shown arrows 4 is movable and is formed for example by movable angle pieces or the like.
  • the folding device 1 comprises a counter-pressure device in the form of abutments 26, which are arranged on the opposite side of the punch 8 of the die 4.
  • the in Fig. 2a cardboard box 2 detected by means of a gripping device such as a gripper arm with vacuum suction and inserted into the folding device 1 such that the carton blank 2 between the punch 8 and the die opening 6 comes to rest ( Fig. 1a )).
  • the carton blank 2 is inserted between the wedge-shaped portions 22 'of the sliding pieces 22 such that the tabs 2A through the wedge-shaped portions 22' as indicated by arrows in Fig. 1a ) are suggested to be folded.
  • the in Fig. 2b state of the carton blank 2.
  • the punch 8 is moved or inserted into the opening 6 of the die 4 such that the side flaps 2B, 2C of the carton blank 2 are folded.
  • the carton blank 2 is pressed into the die opening 6 and the carton blank 2 reaches the in Fig. 2c ) state shown.
  • the punch 8 is retracted to its original position.
  • this method step the forming of the folding box 2 'can already be completed.
  • this is followed by a further method step, in which the dimensions of the punch 8 are again increased in the direction of the arrow 6, thereby causing an even further folding of the end portions of the flaps 2C.
  • This method step is particularly preferred when the end portions of the flaps 2C are provided with locking projections 2D which serve to engage in recesses 2E of the carton blank 2, which gives the resulting cardboard box 2 'a higher stability.
  • the enlargement of the dimensions of the punch 8 can in turn be achieved by moving the punch shoes 18, 12 in this final process step, which ensures a secure engagement of the projections 2D in the recesses 2E.

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  • Making Paper Articles (AREA)

Claims (11)

  1. Procédé pour former une boîte pliante (2') à partir d'une découpe de carton préalablement nervurée (2), avec les étapes suivantes :
    - poser la découpe de carton (2) entre l'ouverture (6) d'une matrice (4) et une estampe (8) qui peut être introduite au moins par morceaux dans l'ouverture (6) et qui comporte au moins deux éléments de pression (10, 12) dont l'écartement est réglable au moins dans une direction,
    - première introduction des éléments de pression (10, 12) dans l'ouverture (6) de la matrice (4) de telle sorte que la découpe de carton (2) est pliée au moins par morceaux par les éléments de pression,
    - retrait des éléments de pression (10, 12) et réglage de l'écartement des éléments de pression (10, 12) au moins dans une direction, et
    - deuxième introduction des éléments de pression (10, 12) dans l'ouverture (6) de la matrice (4) de telle sorte que la découpe de carton (2) est pliée au moins par morceaux par les éléments de pression.
  2. Procédé selon la revendication 1, caractérisé par le fait que, après la deuxième introduction des éléments de pression (10, 12), leur écartement est réglé, notamment agrandi, au moins dans une direction, notamment pour provoquer un pliage.
  3. Procédé selon la revendication 1 ou 2, caractérisé par le fait que, après le retrait et avant la deuxième introduction des éléments de pression (10, 12), des languettes de la découpe de carton (2) sont pliées de telle sorte qu'elles viennent se placer entre l'ouverture (6) de la matrice (4) et l'estampe (8).
  4. Dispositif de pliage (1) pour la mise en oeuvre du procédé selon l'une des revendications précédentes, avec :
    - une matrice (4), qui définit une ouverture (6),
    - une estampe (8), qui comporte au moins deux éléments de pression (10, 12) dont l'écartement est réglable et qui peut être introduite au moins par morceaux dans l'ouverture (6),
    les au moins deux éléments de pression (10, 12) étant déplaçables linéairement l'un par rapport à l'autre dans au moins une direction.
  5. Dispositif de pliage selon la revendication 4, caractérisé par le fait que l'ouverture (6) de la matrice (4) a des dimensions qui sont réglables au moins dans une direction.
  6. Dispositif de pliage selon la revendication 4 ou 5, caractérisé par le fait que l'écartement des éléments de pression (10, 12) est aussi réglable pendant que l'estampe (8) est introduite au moins par tronçons dans l'ouverture (6) de la matrice (4).
  7. Dispositif de pliage selon l'une des revendications 4 à 6, caractérisé par le fait que la matrice (4) est formée par au moins deux éléments formant cadre (14, 16, 18, 20) qui sont assemblés au moyen d'éléments de positionnement (22), notamment de pièces coulissantes, de telle sorte que les dimensions de l'ouverture (6) de la matrice (4) sont réglables.
  8. Dispositif de pliage selon l'une des revendications 4 à 7, caractérisé par le fait que la matrice (4) est formée par au moins quatre éléments formant cadre (14, 16, 18, 20) en forme de barres qui définissent l'ouverture (6) de la matrice (4) et qui sont assemblés au moyen d'éléments de positionnement (22), notamment de pièces coulissantes, de telle sorte que les dimensions de l'ouverture (6) de la matrice (4) sont réglables.
  9. Dispositif de pliage selon la revendication 7
    ou 8, caractérisé par le fait que les éléments de positionnement (22) dépassent de l'ouverture (6) de la matrice (4) en direction de l'estampe (8) et ont de préférence un tronçon en forme de coin (22').
  10. Dispositif de pliage selon l'une des revendications précédentes 4 à 9, caractérisé par le fait qu'il comporte un dispositif de pliage préalable (24) qui est déplaçable linéairement et au moyen duquel des languettes individuelles de la découpe de carton (2) sont pliables de telle sorte qu'elles viennent se placer entre l'estampe (8) et le reste de la découpe de carton.
  11. Dispositif de pliage selon l'une des revendications précédentes 4 à 10, caractérisé par le fait qu'il comporte un dispositif de contre-pression (26) qui est placé sur celui des côtés de la matrice (4) qui est à l'opposé de l'estampe (8).
EP04003136A 2003-04-25 2004-02-12 Dispositif et procédé de pliage pour la mise en forme d'un carton Expired - Lifetime EP1470909B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10318873A DE10318873B4 (de) 2003-04-25 2003-04-25 Verfahren zum Bilden einer Faltschachtel
DE10318873 2003-04-25

Publications (3)

Publication Number Publication Date
EP1470909A2 EP1470909A2 (fr) 2004-10-27
EP1470909A3 EP1470909A3 (fr) 2006-09-27
EP1470909B1 true EP1470909B1 (fr) 2008-08-27

Family

ID=32946439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04003136A Expired - Lifetime EP1470909B1 (fr) 2003-04-25 2004-02-12 Dispositif et procédé de pliage pour la mise en forme d'un carton

Country Status (3)

Country Link
EP (1) EP1470909B1 (fr)
DE (2) DE10318873B4 (fr)
ES (1) ES2312869T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015115251A1 (de) * 2015-09-10 2017-03-16 Pester Pac Automation Gmbh Verfahren zum dreidimensionalen Umformen von Material
CN108515732B (zh) * 2018-03-28 2019-11-12 江苏南江智能装备股份有限公司 一种自动手提成型设备及手提成型方法
CN112849532B (zh) * 2021-03-05 2025-01-10 广东科贸职业学院 食品包装一体设备

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438788A (en) * 1944-08-11 1948-03-30 F D Palmer Inc Paper box forming apparatus
DE1086533B (de) * 1959-04-29 1960-08-04 Chur Patentverwertungsgesellsc Vorrichtung in einer Faltmaschine zur Herstellung der Boden- und Deckelteile von Stuelpdeckelschachteln
DE1152007B (de) * 1959-08-28 1963-07-25 Mahlkuch Greif Werk Ernst Vorrichtung zum Herstellen der Boden- und Deckelteile von Stuelpdeckelschachteln
DE1958067A1 (de) * 1969-11-19 1971-05-19 Muellerschuh Schuhfabriken Rud Maschine zum Erstellen von Schachtelunter- und/oder Oberteilen
FR2273715A1 (fr) * 1974-06-05 1976-01-02 Surepack Machine de pliage pour le montage de plateaux d'emballage en carton
DE3439908A1 (de) * 1984-10-31 1986-04-30 Max Kettner Verpackungsmaschinenfabrik GmbH & Co KG, 8000 München Maschinen zum auffalten von kartons aus ebenen zuschnitten
FR2611584A1 (fr) * 1987-03-06 1988-09-09 Vega Automation Sa Procede de matricage de decoupes, destinees notamment a la realisation de barquettes de conditionnement ou similaire, dispositif de matricage pour la mise en oeuvre du procede et machine de conditionnement comportant un tel dispositif
AU2880895A (en) * 1994-07-06 1996-01-25 Cartolit A/S Method and apparatus for use in connection with mounting of carton liners in freezing frames
DE19636262A1 (de) * 1996-09-06 1998-03-12 Ligmatech Maschb Gmbh Faltmaschine und Verfahren zum automatischen Falten einer Faltschachtel
EP1302305A3 (fr) * 2001-10-09 2004-01-21 Inpak Imola S.r.l. Appareil pour la fabrication de récipients en forme de caisse en matière synthétique

Also Published As

Publication number Publication date
ES2312869T3 (es) 2009-03-01
DE10318873A1 (de) 2004-11-25
DE502004007935D1 (de) 2008-10-09
DE10318873B4 (de) 2007-11-15
EP1470909A2 (fr) 2004-10-27
EP1470909A3 (fr) 2006-09-27

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