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WO2024146896A1 - Dispositif et procédé de traitement d'une bande continue de carton - Google Patents

Dispositif et procédé de traitement d'une bande continue de carton Download PDF

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Publication number
WO2024146896A1
WO2024146896A1 PCT/EP2024/050076 EP2024050076W WO2024146896A1 WO 2024146896 A1 WO2024146896 A1 WO 2024146896A1 EP 2024050076 W EP2024050076 W EP 2024050076W WO 2024146896 A1 WO2024146896 A1 WO 2024146896A1
Authority
WO
WIPO (PCT)
Prior art keywords
box
leporello
creases
continuous
cardboard
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.)
Ceased
Application number
PCT/EP2024/050076
Other languages
German (de)
English (en)
Inventor
Torsten Göhler
Christian TIPPNER
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
Homag 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 Homag Automation GmbH filed Critical Homag Automation GmbH
Priority to EP24700009.4A priority Critical patent/EP4646327A1/fr
Publication of WO2024146896A1 publication Critical patent/WO2024146896A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B31B50/006—Controlling; Regulating; Measuring; Improving safety
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/86—Investigating moving sheets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8914—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/16—Cutting 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/25—Surface scoring
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/86—Investigating moving sheets
    • G01N2021/8663—Paper, e.g. gloss, moisture content
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8914—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
    • G01N2021/8917—Paper, also ondulated

Definitions

  • the invention relates to a device and a method for processing continuous cardboard.
  • continuous cardboard boxes are often used, for example for packaging products.
  • Continuous cardboard is generally a box that is not infinitely long in the mathematical sense, but whose extension in one direction, which is usually the direction in which the continuous cardboard box is conveyed, is many times larger than in a direction transverse to this.
  • the continuous cardboard box is folded in a zigzag fold and often, but not exclusively, stored on a pallet.
  • This zigzag folding of the box is often also referred to as Leporello folding, fanfold or Z-fold, with these terms being used synonymously.
  • the Leporello folds i.e. the folds that are created by the zigzag folding of the continuous cardboard, run across the length of the cardboard and divide it into sections of essentially the same length.
  • Continuous cardboard boxes with Leporello folds offer the advantage that they are particularly suitable for the automated production of cardboard boxes.
  • the continuous cardboard is often automatically fed to a cardboard processing machine.
  • the cardboard processing machine makes folds and cuts, that correspond to a desired layout of the cardboard box, and cuts the endless cardboard box to length.
  • a disadvantage of using endless cardboard is the Leporello folding of the same.
  • the Leporello folding of the endless cardboard box divides it into many, essentially equally long sections without folding.
  • the maximum length of the sections is usually limited by the length of the pallet on which the endless cardboard box is stored.
  • This floor plan which is also known as the cardboard construction, is the cutting of the cardboard box on the plane, i.e. the shape of the unfolded box. If a Leporello crease is located in the area of an adhesive flap of the cardboard box, in practice this often leads to the adhesive flap coming off again after gluing.
  • the length of the linearly detected or approximated surface is approximately 2.5 times the width of the creases to be detected.
  • the controller is further configured to measure a length of the surface of the endless box linearly detected by the sensor or to calculate a length of the surface of the endless box linearly approximated by the controller.
  • the controller is also configured to detect creases present in the endless box, in particular Leporello creases, based on the length. This inventive design of the device allows creases in the endless box to be detected particularly reliably and with high accuracy. This is because if there is a crease in the endless box, the measured or calculated length of the surface of the endless box is greater than if there is no crease in the endless box.
  • the above inventive design can prevent the cardboard box made from the continuous cardboard from being folded at a point where a Leporello crease is present instead of being bent at a point where a fold introduced by the processing device is present. In this way, the dimensional accuracy of the cardboard box or of a package folded from the cardboard box can be improved. It is also possible to prevent a Leporello crease from being present in the outline of a cardboard box at all.
  • the section of the endless cardboard box in which the Leporello crease is located is severed by the processing device and the outline is positioned on the endless cardboard box such that there is no Leporello crease in the outline.
  • FIG. 3C in a schematic view transverse to the conveying direction of the endless box on its cross-sectional area an embodiment of a sensor according to the disclosure for detecting creases in the endless box, which detects a part of the surface of the endless box in a linear manner parallel to the conveying direction, the continuous box having a Leporello crease.
  • Fig. 4A shows a schematic view transverse to the conveying direction of the continuous box on its cross-sectional area, another embodiment of three sensors according to the disclosure for detecting creases in the continuous box, which detect part of the surface in a point-like manner, the continuous box having no crease.
  • FIG. 5 shows a schematic view across the conveying direction of the endless box on its cross-sectional area, another embodiment of three sensors according to the disclosure for detecting creases in the endless box, which detect part of the surface in a point-like manner, wherein the endless box has a Leporello crease and is displaced parallel by vibrations in the detection direction of the sensors.
  • Fig. 6A is a schematic plan view of a part of the endless box with an indicated floor plan of the box, wherein in the left floor plan a Leporello fold is undesirably located on an adhesive flap.
  • FIG. 1 A preferred embodiment of the device for processing continuous cardboard 2 and for detecting creases contained therein is shown in Figure 1.
  • Continuous cardboard 2 is to be understood in such a way that it refers to materials such as cardboard, corrugated cardboard and cartons which are packaging industry.
  • the device has a conveyor 3 and preferably a processing device 4.
  • the conveyor 3 can convey the continuous cardboard box 2 to a processing device 4 or through it.
  • a control system uses the data provided by the sensor 5 to detect whether a Leporello fold 20 is present in the continuous cardboard box 2.
  • the processing device 4 downstream of the sensor 5 makes cuts and/or folds 62 in the continuous cardboard box 2 in order to provide a plan of a cardboard box in the continuous cardboard box 2 according to the specifications of a control system. This plan can then be taken out of the continuous cardboard box 2 as a cardboard box and either manually or mechanically cut into a Packaging can be folded and/or glued.
  • the processing device 4 can also be designed in such a way that it removes the parts of the continuous box 2 that do not belong to the floor plan by means of cuts and feeds them to a waste disposal unit, so that the finished cardboard can be removed from the processing device 4 or can be folded mechanically.
  • Figure 3A shows a continuous box 2 with an essentially smooth surface, i.e. without creases 20, 21.
  • Figure 3B shows a continuous box 2 with a crease 21 that is not a Leporello crease 20.
  • the curvature of the surface also increases the length L of the surface detected by the sensor 5 in the linear detection section A and measured by the controller. The length L therefore increases when there is a crease 20, 21 in the continuous box 2.
  • Figure 3C shows a continuous box 2 with a Leporello crease 20. Since continuous boxes 2 are often manufactured and folded while still wet, the Leporello creases 20 that arise from the folding of the continuous box 2 are particularly pronounced.
  • a length L of the surface with a Leporello kink 20 can, for example, be more than 5%, preferably more than 2.5% longer than the length of the surface without a kink.
  • the classification of the surface into “no kink”, “kink that is not a Leporello kink” and “Leporello kink” can therefore be carried out using limit values of length L.
  • limit values of length L the detection and Classification can also be adapted to materials of different thicknesses, such as paper, cardboard or foils.
  • a preferably separately implemented control thus receives data at a single point in time about the distance d 1 , d 2 , d 3 from two, preferably three points P 1 , P 2 , P 3 on the surface of the continuous cardboard box 2 to the respective sensors.
  • the control can trigonometrically calculate a length L P1,2 , L P2,3 of a straight line distance between two points P 1 , P 2 , P 3 detected by the sensors 5 on the surface of the continuous cardboard box 2 using the following formulas:
  • the length L which in the other preferred embodiment is determined by a linear sensor 5 was measured directly, can now be approximated by the control system when using two point-measuring sensors 5 by the straight-line distance L P1,2 between the two detected points P 1 , P 2 .
  • This embodiment makes it possible to dispense with a more costly, line-measuring sensor 5 and nevertheless use the inventive principle for detecting creases in an endless box 2 described above in connection with Figures 3A to 3C.
  • Figure 5 shows a case in which a continuous cardboard box 2 is exposed to a vibration or a relative movement in the direction of the sensors. Although point-measuring sensors 5 are shown in Figure 5, the following advantages apply equally to a linear-measuring sensor 5.
  • the continuous cardboard box 2 vibrates, the distances d 1 , d 2 , d 3 between the surface of the continuous cardboard box 2 and the sensors or the sensor 5 change.
  • the distance d 1,1 at one point in time can be greater or smaller than the distance d 1,2 at a second point in time due to the vibration.
  • a length L, L P of a surface in a linear section A does not change or only changes slightly in the event of vibrations or relative movements in the direction of the sensor 5. It is irrelevant whether the length is approximated or measured directly.
  • detection of a kink 20, 21 in the endless box 2 based on the measurement or calculation of a length L, L P of the surface in a linear section A is significantly more robust against vibrations and relative movements than detection based on measuring the distance of the surface of the endless box 2 to the sensor 5.
  • This effect is additionally favored by the fact that the entire length L, L P is recorded or approximated at a single point in time and thus neither the conveying movement of the endless box 2 nor vibrations or other relative movements can negatively influence the detection.
  • vibrations, relative movements or fluctuations in the conveying speed have no or at least a significantly smaller influence on the detection of kinks in the endless box 2.
  • Figures 6A and 6B show how a processing device 4 connected downstream of the at least one sensor 5 can use the information about the presence of a kink 20, 21.
  • the figures show a projection of floor plans 6 onto an endless box 2 with the Leporello kink 20. If the control determines that a kink 20, 21, in particular a Leporello kink 20, is present in the endless box 2, the control gives instructions to the processing device 4 so that in a floor plan 6 of a cardboard box introduced into the endless box 2 by the processing device 4, a Leporello fold 20 is neither arranged in the area of an adhesive flap 61 (left in Figure 6A) nor in an area of a fold 62 introduced by the processing device 4 (left in Figure 6B).
  • the instruction can consist, for example, of moving the outline 6 of the cardboard box forwards or backwards in the longitudinal direction of the endless box 2 or of geometrically adjusting the outline of the cardboard box.
  • the processing device 4 can provide waste cuts in order to separate areas with Leporello folds 20 or to enable the outline 6 of the cardboard box to be moved.

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  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Textile Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

L'invention concerne un dispositif pour traiter une bande continue de carton (2) et pour identifier des plis (20, 21) à l'intérieur de celle-ci, en particulier des plis de leporello (20), ainsi qu'un procédé associé. Le dispositif comprend les étapes suivantes : une unité de transport (3) conçue pour transporter une bande continue de carton (2) dans une direction de transport x ; au moins un capteur (5) qui est conçu pour détecter au moins partiellement une surface de la bande continue de carton (2) pendant que la bande continue de carton est transportée et/ou est fixe ; et un dispositif de commande qui est conçu pour identifier des plis (20, 21) dans la bande continue de carton, en particulier des plis de leporello (20), à l'aide de données relatives à la surface détectée par le capteur (5) ; caractérisé en ce que le capteur (5) est également conçu pour détecter la surface de la bande continue de carton (2) d'une manière linéaire ou le dispositif de commande est également conçu pour approcher la surface de la bande continue de carton (2) d'une manière linéaire à l'aide de données détectées par le capteur (5).
PCT/EP2024/050076 2023-01-05 2024-01-03 Dispositif et procédé de traitement d'une bande continue de carton Ceased WO2024146896A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP24700009.4A EP4646327A1 (fr) 2023-01-05 2024-01-03 Dispositif et procédé de traitement d'une bande continue de carton

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023100223.6A DE102023100223A1 (de) 2023-01-05 2023-01-05 Vorrichtung und Verfahren zur Bearbeitung von Endloskarton
DE102023100223.6 2023-01-05

Publications (1)

Publication Number Publication Date
WO2024146896A1 true WO2024146896A1 (fr) 2024-07-11

Family

ID=89452459

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/050076 Ceased WO2024146896A1 (fr) 2023-01-05 2024-01-03 Dispositif et procédé de traitement d'une bande continue de carton

Country Status (3)

Country Link
EP (1) EP4646327A1 (fr)
DE (1) DE102023100223A1 (fr)
WO (1) WO2024146896A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002018123A1 (fr) * 2000-08-31 2002-03-07 Tetra Laval Holdings & Finance Sa Procede de formation de pliures sur une bande continue de materiau d'emballage
US20100257987A1 (en) * 2008-01-23 2010-10-14 Tetra Laval Holdings & Finance S.A. Method for controlling the register between a printed pattern and a three-dimensional pattern on a packaging material
WO2018136658A1 (fr) 2017-01-18 2018-07-26 Packsize Llc Machine de conversion avec mécanisme de détection de pli
US20190233142A1 (en) * 2018-01-31 2019-08-01 Neopost Technologies Method and system for creating custom-sized cardboard blanks for packagings and method and system for automatically packaging shipment sets in boxes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE502547C2 (sv) * 1994-03-21 1995-11-13 Tetra Laval Holdings & Finance Sätt och anordning för att avkänna läget för en tvärgående big hos en förpackningsbana
DE10246449A1 (de) * 2002-10-04 2004-06-09 Kleinhuber, Harald G. Sensorsystem zum Erkennen der Lage von ringförmigen Einprägungen an Materialbahnen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002018123A1 (fr) * 2000-08-31 2002-03-07 Tetra Laval Holdings & Finance Sa Procede de formation de pliures sur une bande continue de materiau d'emballage
US20100257987A1 (en) * 2008-01-23 2010-10-14 Tetra Laval Holdings & Finance S.A. Method for controlling the register between a printed pattern and a three-dimensional pattern on a packaging material
WO2018136658A1 (fr) 2017-01-18 2018-07-26 Packsize Llc Machine de conversion avec mécanisme de détection de pli
US20190233142A1 (en) * 2018-01-31 2019-08-01 Neopost Technologies Method and system for creating custom-sized cardboard blanks for packagings and method and system for automatically packaging shipment sets in boxes
EP3521006A1 (fr) 2018-01-31 2019-08-07 Neopost Technologies Procédé et système permettant de créer des ébauches en carton pour emballages de taille personnalisée et procédé et système pour ensembles d'expédition d'emballage automatique dans des boîtes

Also Published As

Publication number Publication date
EP4646327A1 (fr) 2025-11-12
DE102023100223A1 (de) 2024-07-11

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