WO2013000503A1 - Procédé et machine de fabrication d'un précurseur de boîte en carton renforcé - Google Patents

Procédé et machine de fabrication d'un précurseur de boîte en carton renforcé Download PDF

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Publication number
WO2013000503A1
WO2013000503A1 PCT/EP2011/060800 EP2011060800W WO2013000503A1 WO 2013000503 A1 WO2013000503 A1 WO 2013000503A1 EP 2011060800 W EP2011060800 W EP 2011060800W WO 2013000503 A1 WO2013000503 A1 WO 2013000503A1
Authority
WO
WIPO (PCT)
Prior art keywords
inserts
area
precursor
blank
machine
Prior art date
Application number
PCT/EP2011/060800
Other languages
English (en)
Inventor
Zsolt Fekete
Original Assignee
Sca Packaging Hungary Kft
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 Sca Packaging Hungary Kft filed Critical Sca Packaging Hungary Kft
Priority to PCT/EP2011/060800 priority Critical patent/WO2013000503A1/fr
Publication of WO2013000503A1 publication Critical patent/WO2013000503A1/fr

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
    • 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
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • 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
    • 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
    • B31B2120/40—Construction of rigid or semi-rigid containers lined or internally 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

Definitions

  • the present invention relates to a method and a machine for making a cardboard box precursor, in particular a
  • buffer materials are used in the packaging industry.
  • buffer material is polystyrene foam, with packaging inserts made of such
  • polystyrene foam inserts have many environmental characteristics
  • the inserts need to be positioned and fixed appropriately in the box before the article is packaged, if not by filling up from wall to wall, so for example by gluing.
  • the inserts need to be positioned at predetermined positions on the box precursor in order to provide, in the finished box, the necessary structural reinforcement for the box and/or holding structure for the item to be packaged.
  • a machine for producing a packaging for books and other products which need to be held and cushioned during transport is known from DE 43 38 799 Al .
  • cardboard blanks arrive in sequence at a joining station where to be joined with end pads (inserts) previously made on a separate manufacturing line.
  • the end pads arrive at the station provided with glue and with a specified spacing between successive pads, and are led onto the bottom of the cardboard box blank by means of guides.
  • the final positioning of the inserts is only achieved on the blank itself, and the machine is only adapted to position inserts of simple
  • the machine disclosed in WO 01/00511 A2 continuously positions a carton blank delivered from one feed stream relative to an insert blank delivered from a second feed stream. Since the insert and the blank have in general different dimensions, they have to travel with different distances between successive blanks and inserts, respectively as well as different velocities on their feed streams in order to be properly aligned once the feet streams are joined. Moreover, slippage due to frictional engagement between the conveyors of the continuous machine and the blanks or inserts will introduce further differences between the individual pitches of blanks and inserts.
  • This object is achieved by a method for making a cardboard box precursor according to claim 1 and a machine for making a cardboard box precursor according to claim 10.
  • Preferred embodiments of the invention are defined in the dependent claims.
  • the method for making a cardboard box precursor of the invention comprises the following steps: feeding a precursor blank to a first area of a box-making machine, feeding one or more inserts to a second area within the box-making machine, positioning and aligning the inserts on the second area according to their final position and alignment on the precursor blank, transferring the inserts onto the precursor blank while maintaining their relative position and
  • the precursor blank is, for example, a generally
  • the precursor blank is fed to the first area in a step-wise fashion from a precursor blank storage, for example a storage hopper.
  • the inserts to be positioned at specific location on the precursor blank may, preferably, be reinforcing inserts which provide structural rigidity to the finished cardboard box as well as positioning and holding the object to be packaged.
  • An example of such reinforcing inserts are inserts made of honeycomb boards (uncrushed, partially crushed or crushed) , but also other types of reinforcing inserts.
  • Some inserts need not have any reinforcing function but may be provided only for positioning the article to be packaged or for separating plural articles to be packaged in the same box, such as an electronic
  • the inserts are fed to the second area either
  • inserts are positioned and aligned on the second area according to the final position and alignment on the precursor blank. This means that, on the second area, the inserts are arranged and oriented with the same relative distances between inserts as when they take up their final position and alignment on the precursor blank.
  • the transfer of the inserts onto the precursor blank may be effected by any means known in the art for that purpose, such as grippers or the like. It is important that during the step of transferring the inserts maintain their relative position and alignment so as to avoid erroneous positioning on the blank and to achieve high precision in the positioning of the inserts. Fixing can be effected by any common and known means, such as by glue having an appropriate setting time of, for example, about five seconds.
  • the presence of the inserts at the second area is controlled prior to the step of transferring, and the box-making machine is stopped if one or more inserts are not present at the second area.
  • the method makes it possible to avoid producing precursors with missing inserts, on the one hand, but also to avoid wasting blanks, inserts and/or glue as well as avoiding downtime due to removal of the incomplete precursor, the presence of the inserts may be detected by any suitable means such as optical sensors, electro-mechanical switches or the like which produce a signal in correspondence to the presence or absence of the insert.
  • the position and/or alignment of the inserts of the second area is controlled prior to the step of transferring, and the box-making machine is stopped if one or more inserts are not properly positioned or aligned at the second area.
  • This advantageous embodiment of the inventive method does not only prevent wasting raw material due to missing inserts but also allows to ensure extremely high accuracy of positioning and alignment in the finished precursor since cardboard box precursors are only produced by the method if optimum positioning/alignment is provided for.
  • control or detection of the position and/or alignment of the inserts may be effected by optical, mechanical or electrical means which generate a signal as a function of the position/alignment of the inserts.
  • the step of positioning and aligning is performed by:
  • abutting the inserts against abutment surfaces provided on the second area comprises abutting the inserts against abutment surfaces provided on the second area. These abutment surfaces are placed according to the final position and alignment of the precursors on the blank and are particularly simple manner to ensure proper positioning and alignment, and to save costs for the necessary hardware.
  • the inserts are fed together in the same stroke. This means that the inserts are fed in a single simultaneous movement by the machine, which speeds up both the feeding step itself and the subsequent positioning and aligning, and thus reduces the total production time.
  • the feeding may be performed to that end by feeding belt or plate, or by a pusher, to name but a few examples.
  • the step of transferring comprises suctioning the inserts by a suctioning device, and moving the inserts with the suction device onto the precursor blank.
  • the suctioning and subsequent moving of the inserts altogether allows to maintain the relative position and alignment of the inserts in a particularly simple and secure manner and thus to reduce the possibility of errors.
  • the method further comprises applying glue to the precursor blank at the final positions of the inserts on the precursor blank.
  • glue is a
  • the step of fixing preferably comprises pressing the inserts onto the precursor blank by means of the suctioning device.
  • the suctioning device used for transferring and placing the inserts to their proper position and alignment may also aid in fixing the inserts, thus greatly contributing to the precision and durability of the insert placement.
  • the method may preferably further comprise, after the step fixing the inserts, the step of folding and gluing the edges of the precursor blank partly around the inserts fixed in the final position. This allows to achieve, building upon the preceding precise positioning and
  • a machine for making a cardboard box comprising a first area for receiving a box precursor blank, a second area for positioning and aligning inserts, and a feeding arrangement for feeding inserts to the second area, wherein the second area comprises positioning and alignment elements that are placed on the second area
  • the inserts are preferably reinforcing inserts that not only provide positioning to the items to be packaged, but also structural rigidity to the box, once finished .
  • the positioning and alignment elements preferably comprise abutment surfaces for the reinforcing inserts.
  • the use of abutment surfaces provides a particularly simple and economic way to implement positioning and alignment elements, thereby reducing possibilities for error and saving costs for the machine outlay.
  • the alignment elements are stops, rails and/or protrusions. Other alignment
  • the feeding arrangement comprises a pusher that has a pushing surface shaped
  • the pushing surface does not need to be uninterrupted, in a single piece, but can consist of an adequate number of contact pins or other contact elements. In this manner, the pusher can feed the inserts in one stroke, that is with one simultaneous movement of all inserts, onto the second area. This reduces the necessary processing time. Moreover, by having a pushing surface shaped according to the outline of the final position and alignment of the inserts on the precursor blank, a pre- positioning and pre-alignment is already effected by the feeding arrangement, which in conjunction with the
  • the feeding arrangement preferably comprises one or more cassettes for holding available the inserts.
  • the cassettes may have a directional-forcing form so that the insert cannot be inadvertently loaded the wrong way.
  • Cassettes are a particularly simple and cheap manner for storing and holding available the inserts, and can moreover be easily changed or reconfigured for different inserts. It is of course equally possible to provide other feeding arrangements such as those based on belt feeders or hoppers. It is also conceivable to provide a pre- feeder belt that replenishes the cassettes during the process run.
  • the first area is a folding area and is provided with folding devices (12) for at least partially folding portions of the precursor blank.
  • This folding area to which the precursor blank is fed in order to receive the ready positioned and aligned inserts, and which are fixed on the blanks, can thus be provided with a second function, that is folding at least partially portions of the blank without the need to provide a separate area to which the blanks provided with their insert need to be transported. This reduces the overall machine length and, consequently, reduces processing times because less areas (stations) need to be run through.
  • Figure 1 shows a plan view of a machine for making cardboard box precursors
  • Figure 2 shows a plan view of the plate feeder on the second area of the machine of Figure 1
  • Figures 3a to 3d show, in side view, a sequence of processing steps applied by the plate feeder to the inserts
  • Figure 4 shows a front view of the machine
  • suctioning device operating between the first and second areas .
  • Figure 1 shows an embodiment of the machine for making a reinforced cardboard box of the invention in plan view.
  • the machine is operating in stepwise mode rather than
  • a cardboard box precursor blank 1 is fed through a sheet feeder 11 from a hopper magazine (not shown) , in which the blanks 1 are stored, to a first area 10 of the machine in which they are briefly stopped, and where they will undergo the step of fixing the inserts 2 thereon and the step of folding and gluing the edges of the precursor blank 1 around the those reinforcing inserts 2 that are fixed close to the edges in their final positions.
  • folding devices 12 may be provided laterally along the first area 10.
  • a further, third area 40 Downstream of the first area there is a further, third area 40 for feeding out the finished cardboard box precursors.
  • Additional folding devices may be provided at the downstream end of the first area across its width. These additional folding devices serve for folding the cardboard precursor blanks along their front edges, preferably in an analogous manner as effected by the lateral folding devices, i.e. around the inserts. It is of course possible to provide still further folding devices, such as for the rear edges of the blanks.
  • Each second area 20, shown in more detail in Figure 2 comprises a positioning and alignment surface 21 that is provided with a plurality of stops in form of guide plates 22 which provide abutment surfaces and have the function to guide the inserts 2 fed to the second area 20 into the correct position and alignment according to their final position and alignment on the precursor blank 1.
  • each cassette with a shape adapted to the outline shape of a given type of insert.
  • the cassette 23 itself consists of upright angle plates 23a that delimit the inserts 2 at their corners and allow them to glide vertically within. It is to be understood that different types of insert
  • a pusher device is provided beneath the cassettes 23 at the second area 20, which consists of a pusher plate 24 and the associated drive mechanism (not shown) .
  • the shape of the front face 24a of the pusher plate 24 ⁇ see Figures 1 and 2) , which comes into engagement with the inserts, is shaped according to the overall outline that is produced by the inserts 2, 2' in their final position on the precursor blank. In this way, when the pusher plate 24 engages the inserts 2, 2' and starts pushing them into position on the second area 20, the inserts 2 get pre-aligned and pre -positioned relative to each other.
  • the second area 20 is provided with optical sensors arranged above the alignment surface 21 which control the presence, position and alignment of the inserts 2 once they are positioned and aligned, and transmit a signal to the machine control that stops the machine if one or more inserts are either not present or not positioned and/or aligned in the predetermined manner.
  • a suctioning device 30 for transferring the inserts 2, 2' from the second area 20 onto the precursor blank 1 on the first area 10 is provided.
  • the suctioning device 30 comprises vacuum cups 31 connected by hoses 34 to a vacuum source and mounted on a longitudinal beam 32 (in the machine direction) which itself is movably supported on two
  • the vacuum cups 31 can be lowered from the longitudinal beam 32 onto the first and second areas 10, 20 to pick up the inserts 2. To that end, the vacuum cups 31 are disposed in an arrangement in which each vacuum cup 31 can be lowered and engaged with an insert 2, 2' on the second area 20, that is the vacuum cups are arranged in positions which correspond to the positions of the individual inserts 2, 2' that are positioned and aligned on the second area 20.
  • a set of reinforcing inserts 2, 2' is fed from the storage cassettes 23 to the second area 20 and is aligned as will be described in detail below.
  • a cardboard box precursor blank 1 is fed by the sheet feeder 11 to the first area 10.
  • glue is applied thereon.
  • a gluing device (not shown) applies a thermosetting glue of about two seconds curing time onto the blank at the positions where the reinforcing inserts are to be placed and fixed.
  • Figures 3a) to e) show the feeding of the inserts 21 to the first area 10 in detail.
  • the lowermost inserts 2 in the cassettes 23 fall, due to their own weight and the weight of the inserts above them, onto the surface 21 of the second area 20 (Fig. 3a), where they are engaged by the pusher 24 and pushed simultaneously, in the same stroke, to their positions on the second area 20 predetermined by the
  • the reinforcing inserts 2, 2' are already pre-positioned and pre-aligned with respect to each other by virtue of the shaped front face 24a of the pusher plate 24, and they are definitely aligned and positioned by the guide plates 22 that correct positional and alignment inaccuracies thereby allowing the inserts 2, 2' to reach a precisely defined position and alignment on the second area 20.
  • This precisely defined position and alignment corresponds to the final position and alignment on the precursor blank 1.
  • each insert 2, 2' being adhered to by one or more of the vacuum cups 31 (according to the size and weight of the inserts) .
  • the suctioning device 30 then lifts the inserts 2, 2' from the surface 21 of the second area 20, with the inserts 2, 2' remaining in the same relative position and alignment with respect to each other, and are moved along the crossbeams 33 from above the second area 20 to above the first area 10 with the blank 1 in waiting (Fig. 3e) . Once the inserts are lifted and
  • the suctioning device 31 that has moved the inserts 2,2', locked into their predetermined relative positions, to a position above the blank 1, is now lowered and the inserts 2, 2' are placed onto the blank 1 at their predetermined positions.
  • the suctioning device 30 does not immediately release the inserts 2, 2' but pushes them onto the blank while the glue is hardening (see arrow in Fig. 3e ⁇ , both to ensure maximum fixing strength and to avoid mxspositioning or misalignment. Only after a predetermined pressing time of about 1 second the suctioning device 30 is lifted off and returns to its position above the second area 20.
  • the folding devices 12 to the left and right of the precursor blank 1 on the first area 10 are operated to fold the blank 1 along one or more fold lines around those reinforcing inserts 2' that are provided in proximity to the lateral edges of the blank 1.
  • an additional folding device may perform the same action along the front and/or rear edge of the blank.
  • cardboard box can be provided.
  • One type of box that could advantageously be made with this method is one for packaging e.g. flat-panel TV screens, which need a box with good torsional stiffness.
  • Such a box could be of double-tray type with one tray serving as a bottom and the other as an upper part or a lid.
  • the method and machine of the invention contribute to a great extent to the manufacture of a precursor blank having optimum mechanical properties. In fact, even slight

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Abstract

Un procédé de fabrication d'un précurseur de boîte en carton comprend les étapes consistant à acheminer une découpe (1) de précurseur jusqu'à une première zone (10) d'une machine de fabrication de boîte, à acheminer un ou plusieurs inserts (2, 2') jusqu'à une seconde zone (20) dans la machine de fabrication de boîte, à positionner et à aligner les inserts (2, 2') sur la seconde zone (20) en fonction de leur position et de leur alignement finals sur la découpe (1) de précurseur, à transférer les inserts (2, 2') sur la découpe (1) de précurseur tout en maintenant leurs position et alignement relatifs, et à fixer les inserts (2, 2') sur la découpe (1) de manière à obtenir le précurseur. Une machine de fabrication de boîte en carton comprend une première zone (10) destinée à recevoir une découpe (1) de précurseur de boîte, une seconde zone (20) destinée à positionner et à aligner les inserts (2) et un aménagement d'acheminement (23, 24) destiné à acheminer les inserts (2, 2') jusqu'à la seconde zone (20). La seconde zone (20) comprend des éléments de positionnement et d'alignement (22) qui sont placés sur la seconde zone (20) en fonction de la position et de l'alignement finals des inserts (2, 2') sur la découpe (1) de précurseur.
PCT/EP2011/060800 2011-06-28 2011-06-28 Procédé et machine de fabrication d'un précurseur de boîte en carton renforcé WO2013000503A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/060800 WO2013000503A1 (fr) 2011-06-28 2011-06-28 Procédé et machine de fabrication d'un précurseur de boîte en carton renforcé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/060800 WO2013000503A1 (fr) 2011-06-28 2011-06-28 Procédé et machine de fabrication d'un précurseur de boîte en carton renforcé

Publications (1)

Publication Number Publication Date
WO2013000503A1 true WO2013000503A1 (fr) 2013-01-03

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PCT/EP2011/060800 WO2013000503A1 (fr) 2011-06-28 2011-06-28 Procédé et machine de fabrication d'un précurseur de boîte en carton renforcé

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4338799A1 (de) 1993-11-13 1995-05-18 Sigloch Verlag Service Gmbh Verpackung für Bücher und/oder andere Produkte sowie Verfahren und Vorrichtung zu ihrer Herstellung
WO2001000511A2 (fr) 1999-06-28 2001-01-04 The Mead Corporation Appareil d'alignement d'articles et procede associe
EP2127861A1 (fr) * 2008-05-28 2009-12-02 Ghelfi Ondulati S.r.l. Machine destinée à insérer des panneaux de renfort dans les boîtes en carton correspondantes
EP2360103A1 (fr) * 2010-02-22 2011-08-24 L.C.R. Macchine Automatiche S.R.L. Flan pour une boîte en carton, et machine et procédé pour sa réalisation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4338799A1 (de) 1993-11-13 1995-05-18 Sigloch Verlag Service Gmbh Verpackung für Bücher und/oder andere Produkte sowie Verfahren und Vorrichtung zu ihrer Herstellung
WO2001000511A2 (fr) 1999-06-28 2001-01-04 The Mead Corporation Appareil d'alignement d'articles et procede associe
EP2127861A1 (fr) * 2008-05-28 2009-12-02 Ghelfi Ondulati S.r.l. Machine destinée à insérer des panneaux de renfort dans les boîtes en carton correspondantes
EP2360103A1 (fr) * 2010-02-22 2011-08-24 L.C.R. Macchine Automatiche S.R.L. Flan pour une boîte en carton, et machine et procédé pour sa réalisation

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