EP3347196B1 - Procédé de formage tridimensionnel de matériau - Google Patents

Procédé de formage tridimensionnel de matériau Download PDF

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Publication number
EP3347196B1
EP3347196B1 EP16767162.7A EP16767162A EP3347196B1 EP 3347196 B1 EP3347196 B1 EP 3347196B1 EP 16767162 A EP16767162 A EP 16767162A EP 3347196 B1 EP3347196 B1 EP 3347196B1
Authority
EP
European Patent Office
Prior art keywords
deep
piston
die
reshaping
during
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16767162.7A
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German (de)
English (en)
Other versions
EP3347196A1 (fr
Inventor
Hans Haug
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.)
Pester Pac Automation GmbH
Original Assignee
Pester Pac Automation 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 Pester Pac Automation GmbH filed Critical Pester Pac Automation GmbH
Publication of EP3347196A1 publication Critical patent/EP3347196A1/fr
Application granted granted Critical
Publication of EP3347196B1 publication Critical patent/EP3347196B1/fr
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/0077—Shaping by methods analogous to moulding, e.g. deep drawing techniques
    • 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
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/008—Shaping of tube ends, e.g. flanging, belling, closing, rim-rolling or corrugating; Fixing elements to tube ends
    • B31F1/0087—Rim-rolling
    • 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
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/36—Moistening and heating webs to facilitate mechanical deformation and drying deformed webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • B65B47/04—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of mechanical pressure
    • B65B47/06—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of mechanical pressure using 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
    • B31B50/59—Shaping sheet material under pressure

Definitions

  • the invention relates to a method for the three-dimensional reshaping of flat material made of, in particular, natural fibers, such as paper or cardboard, with a piston and a sleeve-shaped counterpart into which the material is drawn.
  • the invention is based on the object of proposing a forming process with which this uncontrolled formation of wrinkles is avoided.
  • a possibility is created to produce a complex final contour with an increased deformation ratio that is dimensionally stable and dimensionally stable.
  • this object is achieved in that the diameter of the deep-drawing piston plus the material thickness of the material to be deep-drawn corresponds at least approximately to the diameter of the die at any point in time and that the die is sleeve-shaped, with a conical configuration.
  • the diameter of the deep-drawing piston plus the material thickness of the material to be deep-drawn i.e. the diameter of the piston plus twice the material thickness
  • the diameter of the piston plus twice the material thickness corresponds at least approximately to the diameter of the die at every point in time during the deep-drawing process
  • the wrinkles in the material that occur during deep-drawing are evenly and finely distributed .
  • conical shapes can be deep-drawn directly.
  • the fold holder presses against the flat material with a variable pressure, the fold holder being able to press spring-loaded against the flat material and / or the pressure of the fold holder acting against the flat material can be controlled or regulated .
  • the diameter of the die can be changed.
  • the diameter of the die is not limited to circular deep drawing. Rather, all conceivable forms are possible. This includes circular, oval, polygonal, angular, etc.
  • the die is made up of segments that can be moved relative to one another.
  • the deep-drawing piston is conical.
  • the drawing gap can always be kept constant.
  • Another very advantageous embodiment of the invention is also present when the diameter of the deep-drawing piston can be changed, segments which can be moved relative to one another can be provided.
  • a deep-drawing piston with a variable diameter can be used very well with a conical die.
  • One possibility for changing the diameter of the deep-drawing piston is a structure made up of segments that can be adjusted relative to one another.
  • the shape and / or dimensions of the deep-drawing piston can be changed by means of internal pressure, the pressure being able to be built up by means of compressed air or a hydraulic medium.
  • Such a deep-drawing piston can be used both with a conical matrix and with a matrix that can be changed in diameter.
  • a counter-punch is provided in the axial direction of the deep-drawing piston, which presses the material against the deep-drawing piston during the forming process, the counter-punch being variable and controllable.
  • the material is reliably guided during forming, so that no uncontrolled movements of the material can occur.
  • the holding force can be adjusted very precisely.
  • a calibration device is provided in which the reshaped material is pressed against the piston.
  • the material is moistened at least on one side before, during and / or after the reshaping and / or calibration.
  • the material is heated before, during and / or after the forming and / or before and / or during the calibration.
  • the temperature and / or the processing moisture of the material is selected or set depending on the material used.
  • a further advantageous embodiment of the invention is that the material is or will be provided with a plastic layer on at least one side.
  • the fiber-containing material is thus effectively protected against internal and / or external influences.
  • the open end is folded over to form a sealing edge.
  • the created container can thus be closed in a simple manner after it has been filled.
  • the sealing edge is additionally compressed, it being possible for the compression to take place with the supply of heat and / or after previous moistening.
  • 1 designates a device with which paper or cardboard or fiber-containing material 2 can be reshaped from a flat-lying state into a cup-shaped or bowl-shaped state.
  • the device 1 has a piston 3 and, in this exemplary embodiment, a conical, sleeve-shaped die 4, which acts as the opposite of the piston 3.
  • the material 2 is pressed into the die 4 by the piston 3.
  • the material 2 is pressed by a fold holder 5 against the upper side of the die 4 so that it can only slide in a controlled manner when it enters the die 4.
  • the piston 3 is designed to be variable. Either this is composed of segments so that the respective diameter of the piston 3 can be changed by moving the segments to one another, or the piston 3 can be changed in size and / or shape by applying compressed air or a hydraulic medium.
  • the diameter of the piston 3 at any point in time corresponds at least approximately to the respective diameter of the die 4 minus twice the thickness of the material 2, so that the piston 3, the material 2 and the die 4 are in close contact with one another. At most, there should be a small gap. However, it is also conceivable that the piston 3 presses the material 2 slightly against the inside of the die 4.
  • the result is a smooth surface in the walls of the deep-drawn paper or cardboard object.
  • a conical piston 23 is provided and that the die 24 adapts its diameter to the respective position of the piston 23.
  • the die 24 can, for example, be constructed from segments that can be moved relative to one another.
  • the fold holder can press against the flat material 2 in a spring-loaded manner.
  • a hydraulic, electromechanical or other type of contact pressure which is designed to be controllable or regulatable.
  • a combination between spring loading and controlled or regulated hydraulics / pneumatics / actuators is also conceivable.
  • the material 2 is reshaped in the base area between the piston 3 and the counter punch 6 itself.
  • the stamping by the piston 3 and the counter punch 6 takes place before the actual forming process.
  • the piston 3 and the counter punch 6 can already close under the force of the pleat holder and introduce the embossing.
  • a pulling process is carried out contrary to the actual pulling deformation, whereby the scope with regard to the degree of deformation and design of the bottom is expanded.
  • the formed part 7 is moved into a calibration device 8 from the piston 3, where the wall area is pressed against the piston 3 and the small and finely divided folds formed are leveled out.
  • the finished formed part 7 is ejected from the counter punch 6 after the piston 3 has been raised.
  • the upper wall area can be expanded or an edge flange can be formed.
  • This edge flange can either be converted into a flat sealing edge or also into a top curl.
  • the material 2 can be moistened on one or both sides before the forming or also during this process.
  • Heating is also possible, with radiation heating for the material or heating of the forming tools being conceivable.
  • a coating, impregnation or other treatment of the material, for example with a plastic, is also possible in order to improve the tightness of the finished part 7, it being possible for this coating to be carried out on the inside or outside or on both sides.
  • a coating or treatment can also influence the deep-drawing process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Claims (11)

  1. Procédé de formage tridimensionnel d'un matériau aplati en des fibres naturelles, plus précisément en du papier ou en du carton, comprenant un piston (3, 23) d'emboutissage profond et une matrice (4, 24) à travers laquelle, ou dans laquelle ledit matériau est respectivement engagé ou introduit, laquelle matrice est réalisée en forme de douille et présente une configuration tronconique,
    caractérisé par le fait que le diamètre du piston (3, 23) d'emboutissage profond, augmenté de l'épaisseur du matériau à emboutir en profondeur, correspond au moins approximativement au diamètre de la matrice (4, 24) à chaque instant du processus d'emboutissage profond.
  2. Procédé selon la revendication 1, caractérisé par le fait que le matériau est enserré entre la matrice (4, 24) et un « support de plis » (5), de sorte que ledit matériau peut glisser adéquatement au cours du formage.
  3. Procédé selon la revendication 2, caractérisé par le fait que le support de plis (5) est plaqué avec pression variable contre le matériau aplati, sachant que ledit support de plis (5) peut exercer une pression contre ledit matériau aplati, sous l'effet d'une contrainte élastique, et/ou que la pression dudit support de plis (5), agissant sur ledit matériau aplati, peut être respectivement commandée ou régulée.
  4. Procédé selon l'une des revendications précédentes, caractérisé par le fait qu'un contre-poinçon (6), prévu dans la direction axiale par rapport au piston (3, 23) d'emboutissage profond, presse le matériau contre ledit piston (3, 23) d'emboutissage profond au cours du formage, ledit contre-poinçon (6) pouvant être de réalisation variable et régulable.
  5. Procédé selon l'une des revendications précédentes, caractérisé par la présence d'un dispositif de calibrage (8) dans lequel le matériau (7), mis en forme, est pressé contre le piston (3, 23).
  6. Procédé selon l'une des revendications précédentes, caractérisé par le fait que le matériau est humidifié avant, pendant et/ou après le formage et/ou le calibrage, sur au moins une face ; et par le fait que l'humidité de traitement dudit matériau est respectivement sélectionnée, ou réglée, en fonction du matériau utilisé.
  7. Procédé selon l'une des revendications précédentes, caractérisé par le fait que le matériau est chauffé avant, pendant et/ou après le formage, et/ou avant et/ou pendant le calibrage ; et par le fait que la température dudit matériau est respectivement sélectionnée, ou réglée, en fonction du matériau utilisé.
  8. Procédé selon l'une des revendications précédentes, caractérisé par le fait que le matériau comporte une couche de matière plastique ou est muni après coup d'une telle couche, sur au moins une face.
  9. Procédé selon l'une des revendications précédentes, caractérisé par le fait que les plis finement répartis, auxquels le formage donne naissance, sont soumis à une compression.
  10. Procédé selon l'une des revendications précédentes, caractérisé par le fait que l'extrémité ouverte est rabattue pour procurer une bordure de scellement.
  11. Procédé selon la revendication 10, caractérisé par le fait que la bordure de scellement est additionnellement compactée, le compactage pouvant avoir lieu avec apport de chaleur et/ou après humidification préalable.
EP16767162.7A 2015-09-10 2016-09-04 Procédé de formage tridimensionnel de matériau Active EP3347196B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015115251.7A DE102015115251A1 (de) 2015-09-10 2015-09-10 Verfahren zum dreidimensionalen Umformen von Material
PCT/EP2016/070789 WO2017042108A1 (fr) 2015-09-10 2016-09-04 Procédé de formage tridimensionnel de matériau

Publications (2)

Publication Number Publication Date
EP3347196A1 EP3347196A1 (fr) 2018-07-18
EP3347196B1 true EP3347196B1 (fr) 2021-09-01

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ID=56958879

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Application Number Title Priority Date Filing Date
EP16767162.7A Active EP3347196B1 (fr) 2015-09-10 2016-09-04 Procédé de formage tridimensionnel de matériau

Country Status (4)

Country Link
US (1) US11084242B2 (fr)
EP (1) EP3347196B1 (fr)
DE (1) DE102015115251A1 (fr)
WO (1) WO2017042108A1 (fr)

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CN108656625B (zh) * 2018-05-11 2019-12-06 武汉工程大学 一种纸盒折叠系统
DE102018113512A1 (de) * 2018-06-06 2019-12-12 Progress Packaging Gmbh Vorrichtung und Verfahren zum Herstellen von Füllmaterial mit Presseinrichtung
CN110667931B (zh) * 2019-09-06 2021-02-26 福建省泉州喜多多食品有限公司 一种纸质饮料盒折边成型机械及其操作方法
DE102020115546A1 (de) * 2020-06-11 2021-12-16 Technische Universität Dresden, Körperschaft des öffentlichen Rechts Flanschstabilisator für ein Formteil aus Faserwerkstoff, Formteil, Verfahren zur Herstellung eines Formteils und Verwendung eines Flanschstabilisators
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Also Published As

Publication number Publication date
US20180264768A1 (en) 2018-09-20
WO2017042108A1 (fr) 2017-03-16
US11084242B2 (en) 2021-08-10
DE102015115251A1 (de) 2017-03-16
EP3347196A1 (fr) 2018-07-18

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