EP3184452B1 - Procédé de montage d'ébauches - Google Patents

Procédé de montage d'ébauches Download PDF

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Publication number
EP3184452B1
EP3184452B1 EP16205216.1A EP16205216A EP3184452B1 EP 3184452 B1 EP3184452 B1 EP 3184452B1 EP 16205216 A EP16205216 A EP 16205216A EP 3184452 B1 EP3184452 B1 EP 3184452B1
Authority
EP
European Patent Office
Prior art keywords
longitudinal
crease line
transverse
box
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.)
Active
Application number
EP16205216.1A
Other languages
German (de)
English (en)
Other versions
EP3184452A1 (fr
Inventor
Mark Rodgers
Nigel Smith
Andrew Aitken
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.)
Allied Protek Engineering Solutions Ltd
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Allied Protek Engineering Solutions Ltd
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Publication date
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Publication of EP3184452A1 publication Critical patent/EP3184452A1/fr
Application granted granted Critical
Publication of EP3184452B1 publication Critical patent/EP3184452B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/001—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper stackable
    • B65D5/0015—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper stackable the container being formed by folding up portions connected to a central panel
    • B65D5/003—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper stackable the container being formed by folding up portions connected to a central panel having ledges formed by extensions of the side walls
    • B65D5/0035—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper stackable the container being formed by folding up portions connected to a central panel having ledges formed by extensions of the side walls the ledges being located between side walls and doubled-over extensions
    • 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
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/001—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper stackable
    • B65D5/0015—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper stackable the container being formed by folding up portions connected to a central panel
    • B65D5/003—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper stackable the container being formed by folding up portions connected to a central panel having ledges formed by extensions of the side walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/24—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds
    • B65D5/248—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds and at least one side being extended and doubled-over to enclose the adjacent gusset 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
    • 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
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/52—Folding sheets, blanks or webs by reciprocating or oscillating members, e.g. fingers

Definitions

  • the present disclosure relates to methods of erecting blanks, and in particular cut and pre-creased planar blanks that are erected into boxes for the transportation of food products.
  • Expanded polystyrene has a number of advantages, including good thermal insulation properties, low thermal conductivity and low purchase cost, it also has considerable drawbacks, including non-biodegradability, a high cost to transport empty boxes and a large storage area required for empty boxes (because the volume of the empty boxes cannot be reduced), the possibility of damage to the box spoiling the food products and unsuitability for re-use because the material cannot be sterilised.
  • plastic sheet material is initially provided as a blank which has been cut and pre-creased along crease lines to facilitate folding and assembly into a box at the point of use. Folding and assembly of the blank to form the desired box can, however, be a laborious and time consuming operation and the present disclosure seeks to address this problem.
  • JP S43 21435 Y1 describes a blank according to claim 1. JP S43 21435 Y1 does not, however, describe:
  • the present disclosure provides a method for erecting a pre-creased planar blank into a box.
  • the blank can be made of any suitable material, e.g., corrugated plastic sheet which is sometimes referred to as twin-walled fluted plastic sheet.
  • the blank material is preferably non-toxic (making it suitable for packaging and transporting food products) and preferably capable of being recycled.
  • the blank can be cut and pre-creased along the crease lines using any suitable process.
  • the blank includes:
  • the method of erecting the pre-creased planar blank comprises:
  • the method can further include a pre-folding step, between the first and second steps, in which the first-stage partially folded box is temporarily folded along the third and sixth longitudinal crease lines. This weakens the third and sixth longitudinal crease lines and facilitates subsequent folding of the first-stage partially folded box along the third and sixth longitudinal crease lines during the second step.
  • the respective outer and inner longitudinal sidewalls are secured using a suitable process, e.g., ultrasonic welding, preferably at a plurality of spaced locations along the longitudinal sides of the fully erected box.
  • Ultrasonic welding is particularly advantageous if the box is to be used for transporting food products because it avoids the use of glues or other adhesives.
  • other ways of securing the respective outer and inner longitudinal sidewalls and the longitudinal and transverse flanges can be used as appropriate.
  • the integral corners make the box watertight.
  • corner regions When the corner regions are folded along the crease lines that extend from the respective blank apex, they form triangular-shaped 'wings' that are preferably located between the adjacent outer and inner longitudinal sidewalls.
  • the first and fourth integral corners are preferably neatly tucked away between the first outer and inner longitudinal sidewalls
  • the second and third integral corners are preferably neatly tucked away between the second outer and inner longitudinal sidewalls so that they do not extend into the interior of the box.
  • the third step can further include securing the first and fourth integral corners to the first inner and outer longitudinal sidewalls and the second and third integral corners to the second inner and outer longitudinal sidewalls.
  • the respective inner and outer longitudinal sidewalls can be secured using ultrasonic welding at the corners of the fully erected box, e.g., through the folded integral corners.
  • the ultrasonic welding equipment must be capable of securing together at least four thicknesses (i.e. layers) of the blank material.
  • the first part of the first inner longitudinal sidewall, the first longitudinal flange, and an upper part of the first outer longitudinal sidewall preferably together define a first longitudinally-extending structure of substantially triangular cross-section in the fully erected box.
  • the first part of the second inner longitudinal sidewall, the second longitudinal flange, and an upper part of the second outer longitudinal sidewall preferably together define a second longitudinally-extending structure of substantially triangular cross-section in the fully erected box.
  • the longitudinal and transverse flanges define the periphery of a box opening.
  • the method can be carried out by a box erecting machine with multiple stations.
  • the first step (and optional pre-folding step) can be carried out by a plunging station
  • the second and third steps can be carried out by a primary folding and securing station
  • the fourth and fifth steps can be carried out by a secondary folding and securing station.
  • the box is held on an indexing assembly that is actuated laterally along an indexing track to move the box progressively from one station to another in a forward direction.
  • the indexing assembly can include a twin drive chain endless conveyor and the forward movement of the indexing assembly can be driven by a servo motor and chain sprocket assembly.
  • the indexing assembly may include a pair of indexing flights which hold the box and which are moved laterally, e.g. by the twin drive chain conveyor, to move the box progressively from one station to another in the forward direction.
  • the pair of indexing flights may include a first indexing flight which engages the first transverse sidewall of the box and a second indexing flight which engages the second transverse sidewall of the box.
  • the indexing assembly can include a plurality of pairs of the indexing flights so that boxes can be positioned simultaneously at different stations of the box erecting machine.
  • the plunging station can include a void defined by vertically-extending longitudinal and transverse fixed folding surfaces that are sized and shaped to fold the blank along the particular longitudinal and transverse crease lines and form the first-stage partially folded box.
  • the transverse folding surfaces are preferably defined by the indexing flights.
  • the blank can be positioned above the void and then moved downwardly into the void (i.e., 'plunged') such that the blank is folded along the particular longitudinal and transverse crease lines by the contact with the longitudinal and transverse folding surfaces.
  • Additional fixed folding surfaces (or guides) can be shaped to fold the blank along the crease lines that extend from the blank apexes to form the integral corners as the blank is moved downwardly into the void.
  • the additional fixed folding surfaces (or guides) can be arranged to fold the blank along the crease lines that extend from the blank apexes to form the integral corners before the blank is folded along the transverse crease lines during the plunging operation.
  • the blank can be held (e.g., by vacuum suction provided by one or more vacuum heads) on an overhead assembly which can position the blank accurately above the void and is actuated to move downwardly into the void.
  • the overhead assembly can be actuated laterally along an overhead track and can be adapted to pick the blank from a stack of blanks positioned at a picking station of the box erecting machine.
  • the blanks can be manually stacked and the stack can be moved automatically (e.g., using a pusher) to a pre-determined position at the picking station where each blank can be picked up in turn by the overhead assembly.
  • the box erecting machine can include a device for ensuring that only a single blank is picked from the stack by the overhead assembly.
  • the device can introduce a jet of pressurised air underneath the top blank as it is picked up by the overhead assembly to separate it from the underlying blank.
  • the forward and reverse movement of the overhead assembly along the overhead track can be driven by a servo motor and optionally utilises a timing belt assembly.
  • the upward and downward movement of the overhead assembly at the picking station for picking a blank and at the plunging station for plunging the blank into the void can be driven by one or more pneumatic cylinders, and typically by two linear rod pneumatic cylinders.
  • the blank Once the blank is positioned within the void by the overhead assembly to form the first-stage partially folded box, it can be held (e.g., by vacuum suction provided by one or more vacuum heads) within the indexing track and released from the overhead assembly.
  • the pre-folding step may comprise temporarily folding the fifth and seventh side regions inwardly, towards the planar base of the first stage partially folded box, along the third and sixth longitudinal crease lines and thereafter allowing the fifth and seventh side regions to return to a position in which they are substantially co-planar respectively with the first and second outer longitudinal sidewalls.
  • the fifth and seventh side regions return (in other words 'spring back') to the aforementioned position (in which they extend upwards in a substantially vertical direction) due to the inherent stiffness and resilience of the blank material.
  • the step of temporarily folding the fifth and seventh side regions inwardly along the third and sixth longitudinal crease lines is typically carried out with the blank positioned in the void.
  • the plunging station may include movable folding surfaces which can be actuated (e.g., by pneumatic cylinders) to temporarily fold the first-stage partially folded box along the third and sixth longitudinal crease lines, i.e., to fold the fifth and seventh side regions inwardly.
  • the folding surfaces may be actuated to move between an operative position in which the folding surfaces contact the fifth and seventh side regions to fold them inwardly and an inoperative position in which the folding surfaces are spaced from the fifth and seventh side regions.
  • the fifth and seventh side regions return (in other words 'spring back') to their original substantially vertical position, co-planar with the first and second outer longitudinal sidewalls, when the folding surfaces are actuated to return to the inoperative position.
  • the folding surfaces are actuated to move to the operative position when the overhead assembly is in its lowermost position to position the blank within the void.
  • Parts of the overhead assembly thus act as fixed folding surfaces (or guides) which facilitate folding of the fifth and seventh side regions along the third and sixth longitudinal crease lines by the movable folding surfaces.
  • the first-stage partially folded box is moved to the primary folding and securing station by the indexing assembly, preferably by the indexing flights.
  • the primary folding and securing station can include folding surfaces that are actuated to fold the first-stage partially folded box along the third and sixth longitudinal crease lines, i.e., to fold the fifth, seventh, ninth, tenth, eleventh and twelfth side regions inwardly.
  • the primary folding and securing station can further include a folding head that is positioned above the first-stage partially folded box and is actuated to move downwardly into the interior of the box with the above-mentioned side regions folded over (i.e., extending substantially horizontally).
  • the folding head can include folding surfaces that are actuated (e.g., by pneumatic cylinders), when the folding head is positioned accurately within the interior of the box, to fold the box along the ninth, tenth, eleventh and twelfth longitudinal crease lines to form the first and second inner longitudinal sidewalls.
  • the primary folding and securing station can further include an ultrasonic welding assembly with one or more welding heads to ultrasonically weld together the adjacent outer and inner longitudinal sidewalls.
  • the one or more welding heads can be actuated to a welding position and switched on for a preselected period of time to perform the ultrasonic weld and secure together the first outer and inner longitudinal sidewalls and the second outer and inner longitudinal sidewalls.
  • the one or more welding heads can be held in the welding position for a preselected period of time to allow the weld to set.
  • the one or more welding heads can be actuated to return to a non-welding position and the folding head is actuated to move upwardly out of the box with its folding surfaces retracted.
  • the second-stage partially folded box is then moved to the secondary folding and securing station by the indexing assembly, preferably by the indexing flights.
  • the secondary folding and securing station can include folding surfaces that fold the second-stage partially folded box along the fifth and eighth transverse crease lines to form the first and second transverse flanges of the fully erected box.
  • a first folding surface can be a fixed folding surface (or guide) that folds the box along the fifth transverse crease line as it is moved laterally by the indexing assembly and the fixed folding surface comes into contact with the moving vertically-extending sixth side region.
  • a second folding surface can be actuated to fold the box along the eighth transverse crease line. The second folding surface can be actuated when the indexing assembly comes to rest and the box is positioned accurately at the secondary folding and securing station.
  • the secondary folding and securing station can further include an ultrasonic welding assembly with one or more welding heads to ultrasonically weld together the longitudinal and transverse flanges.
  • the welding heads can be actuated to a welding position and switched on for a preselected period of time to perform the ultrasonic weld and secure together the longitudinal and transverse flanges where they overlap.
  • the one or more welding heads can be held in the welding position for a preselected period of time to allow the weld to set.
  • the one or more welding heads can be actuated to return to a non-welding position.
  • the ultrasonic welding can be performed with the second folding surface in the actuated position.
  • the method can optionally include a sixth step of piercing the fully erected box to create one or more openings through which liquid can drain from the box.
  • the sixth step may comprise piercing the first transverse sidewall of the erected box formed by the second substantially rectangular side region and/or may comprise piercing the second transverse sidewall of the erected box formed by the fourth substantially rectangular side region.
  • the first transverse sidewall may be pierced at its base at one or more positions adjacent to the first transverse crease line.
  • the second transverse sidewall may be pierced at its base at one or more positions adjacent to the second transverse crease line.
  • the fully erected box can be moved out of the box erecting machine, e.g., to an outlet conveyor, by the indexing assembly, preferably by the indexing flights.
  • the box erecting machine can include safety guards and be operated under the control of a control unit with a suitable human machine interface (HMI).
  • HMI human machine interface
  • the box erecting machine can form part of a processing plant where the fully erected box is filled (e.g., with food products) and closed with a lid.
  • FIG. 1 there is shown a pre-creased planar blank 20 which is capable of being folded to form a fully erected box 22 (see Figure 4 ).
  • the blank 20 is typically made of corrugated plastic sheet and is cut and pre-creased along crease lines using any suitable process.
  • the blank 20 includes a substantially rectangular central region 24 that forms a planar base B of the erected box 22 and is bounded by first and second longitudinal crease lines 1L, 2L that form first and second longitudinal bottom edges 1LBE, 2LBE of the erected box 22, and first and second transverse crease lines 1T, 2T that form first and second transverse bottom edges 1TBE, 2TBE of the erected box 22.
  • the blank 20 includes a first substantially rectangular side region 1 adjacent the central region 24 that forms a first outer longitudinal sidewall 1SW' of the erected box 22.
  • the first side region 1 is bounded by the first longitudinal crease line 1L, a third longitudinal crease line 3L that forms a first longitudinal top edge 1LTE of the erected box 22, a third transverse crease line 3T that is an extension of the first transverse crease line and forms part of a first vertical edge 1VE of the erected box 22, and a fourth transverse crease line 4T that is an extension of the second transverse crease line 2T and forms part of a second vertical edge 2VE of the erected box 22.
  • the blank 20 includes a second substantially rectangular side region 2 adjacent the central region 24 that forms a first transverse sidewall 1TSW of the erected box 22.
  • the second side region 2 is bounded by the first transverse crease line 1T, a fifth transverse crease line 5T that forms a first transverse top edge 1TTE of the erected box 22, a fourth longitudinal crease line 4L that is an extension of the first longitudinal crease line 1L and forms part of the first vertical edge 1VE of the erected box 22, and a fifth longitudinal crease line 5L that is an extension of the second longitudinal crease line 2L and forms part of a third vertical edge 3VE of the erected box 22.
  • the blank 20 includes a third substantially rectangular side region 3 adjacent the central region 24 that forms a second outer longitudinal sidewall 2SW' of the erected box 22.
  • the third side region 3 is bounded by the second longitudinal crease line 2L, a sixth longitudinal crease line 6L that forms a second longitudinal top edge 2LTE of the erected box 22, a sixth transverse crease line 6T that is an extension of the first transverse crease line 1T and forms part of the third vertical edge 3VE of the erected box 22, and a seventh transverse crease line 7T that is an extension of the second transverse crease line 2T and forms part of a fourth vertical edge 4VE of the erected box 22.
  • the blank 20 includes a fourth substantially rectangular side region 4 adjacent the central region 24 that forms a second transverse sidewall 2TSW of the erected box 22.
  • the fourth side region 4 is bounded by the second transverse crease line 2T, an eighth transverse crease line 8T that forms a second transverse top edge 2TTE of the erected box 22, a seventh longitudinal crease line 7L that is an extension of the first longitudinal crease line 1L and forms part of the second vertical edge 2VE of the erected box 22, and an eighth longitudinal crease line 8L that is an extension of the second longitudinal crease line 2L and forms part of the fourth vertical edge 4VE of the erected box 22.
  • the blank 20 includes first, second, third and fourth substantially square corner regions 1CR, 2CR, 3CR, 4CR.
  • the first corner region 1CR is adjacent the first and second side regions 1, 2.
  • the first corner region 1CR is bounded by the third transverse crease line 3T, the fourth longitudinal crease line 4L, and blank edges that define a first blank apex 1A, and includes a crease line 1CL that extends from the first blank apex 1A to the junction of the third transverse crease line 3T and the fourth longitudinal crease line 4L.
  • the second corner region 2CR is adjacent the second and third side regions 2, 3.
  • the second corner region 2CR is bounded by the sixth transverse crease line 6T, the fifth longitudinal crease line 5L, and blank edges that define a second blank apex 2A, and includes a crease line 2CL that extends from the second blank apex 2A to the junction of the sixth transverse crease line 6T and the fifth longitudinal crease line 5L.
  • the third corner region 3CR is adjacent the third and fourth side regions 3, 4.
  • the third corner region 3CR is bounded by the seventh transverse crease line 7T, the eighth longitudinal crease line 8L, and edges that define a third blank apex 3A, and includes a crease line 3CL that extends from the third blank apex 3A to the junction of the seventh transverse crease line 7T and the eighth longitudinal crease line 8L.
  • the fourth corner region 4CR is adjacent the fourth and first side regions 4, 1.
  • the fourth corner region 4CR is bounded by the fourth transverse crease line 4T, the seventh longitudinal crease line 7L, and blank edges that define a fourth blank apex 4A, and includes a crease line 4CL that extends from the fourth blank apex 4A to the junction of the fourth transverse crease line 4T and the seventh longitudinal crease line 7L.
  • the blank 20 includes fifth, sixth, seventh and eighth substantially rectangular side regions 5, 6, 7, 8.
  • the fifth side region 5 is adjacent the first side region 1 and forms a first longitudinal flange 1LF of the erected box 22.
  • the fifth side region 5 is bounded by the third longitudinal crease line 3L, a ninth longitudinal crease line 9L, and blank edges.
  • the sixth side region 6 is adjacent the second side region 2 and forms a first transverse flange 1TF of the erected box 22.
  • the sixth side region 6 is bounded by the fifth transverse crease line 5T, and blank edges.
  • the seventh side region 7 is adjacent the third side region 3 and forms a second longitudinal flange 2LF of the erected box 22.
  • the seventh side region 7 is bounded by the sixth longitudinal crease line 6L, a tenth longitudinal crease line 10L, and blank edges.
  • the eighth side region 8 is adjacent the fourth side region 4 and forms a second transverse flange 2TF of the erected box 22.
  • the eighth side region 8 is bounded by the eighth transverse crease line 8T, and blank edges.
  • the blank 20 includes a ninth substantially rectangular side region 9 adjacent the fifth side region 5 that forms a first part of a first inner longitudinal sidewall 1SW of the erected box 22.
  • the ninth side region 9 is bounded by the ninth longitudinal crease line 9L, an eleventh longitudinal crease line 11L, and blank edges.
  • the blank 20 includes a tenth substantially rectangular side region 10 adjacent the ninth side region 9 that forms a second part of the first inner longitudinal sidewall 1SW of the erected box 22.
  • the tenth side region 10 is bounded by the eleventh longitudinal crease line 11L, and blank edges.
  • the blank 20 includes an eleventh substantially rectangular side region 11 adjacent the seventh side region 7 that forms a first part of a second inner longitudinal sidewall 2SW of the erected box 22.
  • the eleventh side region 11 is bounded by the tenth longitudinal crease line 10L, a twelfth longitudinal crease line 12L, and blank edges.
  • the blank 20 includes a twelfth substantially rectangular side region 12 adjacent the eleventh side region 11 that forms a second part of the second inner longitudinal sidewall 2SW of the erected box 22.
  • the twelfth side region 12 is bounded by the twelfth longitudinal crease line 12L, and blank edges.
  • the blank 20 is folded along (i) the first, second, fourth, fifth, seventh and eighth longitudinal crease lines 1L, 2L, 4L, 5L, 7L, 8L, (ii) the first, second, third, fourth, sixth and seventh transverse crease lines 1T, 2T, 3T, 4T, 6T, 7T, and (iii) the crease lines 1CL, 2CL, 3CL, 4CL that extend from the first, second, third and fourth blank apexes 1A, 2A, 3A, 4A.
  • the folding carried out in this first step forms a first-stage partially folded box 26 which is best seen in Figure 2 .
  • the first-stage partially folded box 26 includes a planar base B formed by the central region 24 of the blank; first and second longitudinal bottom edges 1LBE, 2LBE formed by the first and second longitudinal crease lines 1L, 2L; first and second transverse bottom edges 1TBE, 2TBE formed by the first and second transverse crease lines 1T, 2T; a first outer longitudinal sidewall 1SW' formed by the first side region 1 and orientated substantially perpendicular to the base B; a first transverse sidewall 1TSW formed by the second side region 2 and orientated substantially perpendicular to the base B; a second outer longitudinal sidewall 2SW' formed by the third side region 3 and orientated substantially perpendicular to the base B; a second transverse sidewall 2TSW formed by the fourth side region 4 and orientated substantially perpendicular to the base; a first vertical edge 1VE formed by the third transverse crease line 3T and the fourth longitudinal crease line 4L; a second vertical edge 2VE formed by the fourth transverse crease line 4T
  • the first-stage partially folded box 26 is folded along the third, sixth, ninth, tenth, eleventh and twelfth longitudinal crease lines 3L, 6L, 9L, 10L, 11L, 12L to form a second-stage partially folded box 28 which is best seen in Figure 3 .
  • the second-stage partially folded box 28 includes a first longitudinal top edge 1LTE formed by the third longitudinal crease line 3L; a first transverse top edge 1TTE formed by the fifth transverse crease line 5T; a second longitudinal top edge 2LTE formed by the sixth longitudinal crease line 6L; a second transverse top edge 2TTE formed by the eighth transverse crease line 8T; a first longitudinal flange 1LF formed by the fifth side region 5 and orientated substantially parallel to the base B; a second longitudinal flange 2LF formed by the seventh side region 7 and orientated substantially parallel to the base B; a first inner longitudinal sidewall 1SW (see Figure 5 ) formed by the ninth and tenth side regions 9, 10, the first inner longitudinal sidewall 1SW having a first part formed by the ninth side region 9 and a second part formed by the tenth side region 10, the second part being orientated substantially perpendicular to the base B and adjacent a lower part of the first outer longitudinal sidewall 1SW' and the first part extending at an angle between the second part and
  • the method desirably includes a pre-folding step which is carried out between the first and second steps described above.
  • the first-stage partially folded box 26 shown in Figure 2 is temporarily folded along the third and sixth longitudinal crease lines 3L, 6L. This temporary folding tends to weaken the third and sixth longitudinal crease lines 3L, 6L and facilitates subsequent folding along those crease lines during the second step to form the second-stage partially folded box 28.
  • first part of the first inner longitudinal sidewall 1SW, the first longitudinal flange 1LF, and an upper part of the first outer longitudinal sidewall 1SW' together define a first longitudinally-extending structure of substantially triangular cross-section in the fully erected box 22.
  • first part of the second inner longitudinal sidewall 2SW, the second longitudinal flange 2LF, and an upper part of the second outer longitudinal sidewall 2SW' together define a second longitudinally-extending structure of substantially triangular cross-section in the fully erected box 22.
  • This construction is advantageous as it considerably improves the strength and rigidity of the box 22.
  • the integral corners make the box 22 watertight.
  • corner regions 1 CR, 2CR, 3CR, 4CR are folded along the crease lines 1CL, 2CL, 3CL, 4CL that extend from the respective blank apex 1A, 2A, 3A, 4A, they form triangular-shaped 'wings' 30 (best seen in Figure 5 ) that are located between the adjacent outer and inner longitudinal sidewalls.
  • the first and fourth integral corners are neatly tucked away between the first outer and inner longitudinal sidewalls 1SW', 1SW, and the second and third integral corners are neatly tucked away between the second outer and inner longitudinal sidewalls 2SW', 2SW so that they do not extend into the interior of the box 22.
  • first outer longitudinal sidewall 1SW' is secured to the first inner longitudinal sidewall 1SW and the second outer longitudinal sidewall 2SW' is secured to the second inner longitudinal sidewall 2SW.
  • the respective outer and inner longitudinal sidewalls 1SW' and 1SW, 2SW' and 2SW are secured to each other by ultrasonic welding at a plurality of spaced locations along the longitudinal sides of the fully erected box 22.
  • the third step includes securing the first and fourth integral corners to the first inner and outer longitudinal sidewalls 1SW, 1SW' and the second and third integral corners to the second inner and outer longitudinal sidewalls 2SW, 2SW'.
  • the respective inner and outer longitudinal sidewalls are secured by ultrasonic welding at the corners of the fully erected box 22.
  • the second-stage partially folded box 28 shown in Figure 3 is folded along the fifth and eighth transverse crease lines 5T, 8T to form the fully erected box 22 shown in Figure 4 .
  • the fully erected box 22 includes a first transverse flange 1TF formed by the sixth side region 6 and orientated substantially parallel to the base B and a second transverse flange 2TF formed by the eighth side region 8 and orientated substantially parallel to the base B.
  • the first transverse flange 1TF is secured to the first and second longitudinal flanges 1LF, 2LF by ultrasonic welding, and the second transverse flange 2TF is similarly secured to the first and second longitudinal flanges 1LF, 2LF.
  • the longitudinal and transverse flanges 1LF, 2LF, 1TF, 2TF define the periphery of a box opening in the fully erected box 22.
  • Embodiments of the method include a sixth step in which the fully erected box 22 is pierced to create one or more openings through which liquid can drain from the box 22.
  • the first transverse sidewall 1TSW and the second transverse sidewall 2TSW of the erected box 22 are pierced to form the openings.
  • the first transverse sidewall 1TSW is pierced at its base at one or more positions adjacent to the first transverse crease line 1T.
  • the second transverse sidewall 2TSW is pierced at its base at one or more positions adjacent to the second transverse crease line 2T.
  • the method described above is desirably carried out by a box erecting machine which is capable of providing fully automated box erection.
  • a box erecting machine 50 One embodiment of a box erecting machine 50 will now be described with reference to Figures 6 to 19 .
  • the box erecting machine 50 includes multiple stations, namely: a loading station 100 at which a stack 102 of pre-creased planar blanks is manually loaded by an operator; a picking station 200; a plunging station 300 for carrying out the first folding step and the pre-folding step; a primary folding and securing station 400 for carrying out the second and third steps; and a secondary folding and securing station 500 for carrying out the fourth and fifth steps.
  • the loading station 100 accommodates a stack 102 of pre-creased planar blanks 20 which are manually stacked and loaded by a machine operator.
  • the loading station 100 includes a transport mechanism, such as a pusher, which moves the stack 102 from the loading station 100 to a predetermined position at the picking station 200 where each blank 20 can be picked up in turn by an overhead assembly 202.
  • the overhead assembly 202 includes a vacuum head 204 which applies suction to an upper surface of the top blank 20 in the stack 102 at the picking station 200.
  • the overhead assembly 202 can be actuated to move upwardly by linear rod pneumatic cylinders once suction has been applied by the vacuum head 204 to enable the top blank 20 to be picked from the stack 102.
  • the box erecting machine 50 includes a device (not illustrated) for introducing a jet of pressurised air underneath the top blank 20 as it is picked up by the overhead assembly 202 to separate it from the underlying blank 20.
  • the box erecting machine 50 includes an overhead track 208 along which the overhead assembly 202 can be actuated to move laterally, between the picking station 200 and the plunging station 300.
  • the lateral (i.e. forward and reverse) movement of the overhead assembly 202 along the overhead track 208 is controlled by a servo motor and timing belt assembly to ensure accurate positioning.
  • the servo motor and timing belt assembly is actuated to move the overhead assembly 202, and hence the blank 20, from the picking station 200 to the plunging station 300 which is best seen in Figures 8 to 11 .
  • the plunging station 300 includes a void 302 which is defined by vertically-extending longitudinal and transverse fixed folding surfaces 304, 306 that are sized and shaped to fold the blank 20 along the first and second longitudinal crease lines 1L, 2L and the first and second transverse crease lines 1T, 2T to form the first-stage partially folded box 26.
  • the blank 20 is positioned above the void 302 by the overhead assembly 202 as shown in Figure 9 .
  • the blank 20 is then moved downwardly (i.e., 'plunged') into the void 302 by the overhead assembly 202 which causes the blank 20 to be folded along the first and second longitudinal crease lines 1L, 2L due to contact with the longitudinal folding surfaces 304 and along the first and second transverse crease lines 1T, 2T due to contact with the transverse folding surfaces 306.
  • Additional fixed folding surfaces (or guides) 308 are provided at the corners of the plunging station 300 and are shaped to fold the blank 20 along the crease lines 1CL, 2CL, 3CL, 4CL that extend from the blank apexes 1A, 2A, 3A, 4A to form the integral corners as the blank 20 is moved downwardly into the void 302 by the overhead assembly 202.
  • the additional fixed folding surfaces (or guides) 308 are arranged to fold the blank 20 along the crease lines 1CL, 2CL, 3CL, 4CL before the blank 20 is folded along the first and second transverse crease lines 1T, 2T during the plunging operation.
  • the box erecting machine 50 includes an indexing assembly 310 that is actuated laterally along an indexing track to move the box progressively from one station to the next in a forward direction.
  • the indexing assembly 310 includes a twin drive chain endless conveyor and the forward movement of the indexing assembly 310 is driven by a servo motor and chain sprocket assembly.
  • the indexing assembly 310 includes a pair of indexing flights 312 which hold the box and constrain it laterally. The indexing flights 312 are themselves moved laterally by the twin drive chain endless conveyor to move the box from one station to the next in the forward direction.
  • a first indexing flight 312a is provided to engage the first transverse sidewall 1TSW of the box and a second opposing indexing flight 312b is provided to engage the second transverse sidewall 2TSW of the box.
  • the transverse folding surfaces 306 are defined by the first and second indexing flights 312a, 312b.
  • multiple pairs of indexing flights 312 are provided on the endless conveyor so that boxes can be positioned simultaneously at different stations.
  • movable folding surfaces 314 provided on retractable folding members 316 are actuated by pneumatic cylinders 318 to temporarily fold the fifth and seventh side regions 5, 7 inwardly (best seen in Figure 11 ) and thereby fold the first-stage partially folded box along the third and sixth longitudinal crease lines 3L, 6L.
  • the folding members 316 can be moved by the pneumatic cylinders 318 between an inoperative position, shown in Figure 10 , in which the folding surfaces 314 are spaced from the fifth and seventh side regions 5, 7 and an operative position, shown in Figure 11 , in which the folding surfaces 314 contact the fifth and seventh side regions 5, 7 and fold them inwardly.
  • the folding members 316 are moved from the inoperative position to the operative position when the overhead assembly 202 is in its lowermost position in the void 302. In this lowermost position, parts of the vacuum head 204 act as fixed folding surfaces (or guides) with which the folding surfaces 314 cooperate to facilitate folding of the fifth and seventh side regions 5, 7 along the third and sixth longitudinal crease lines 3L, 6L.
  • the indexing assembly 310 is actuated so that the indexing flights 312 move the first-stage partially folded box 26 from the plunging station 300 to the primary folding and securing station 400 which is best seen in Figures 12 to 15 .
  • the primary folding and securing station 400 includes pneumatic cylinders 402 which have folding surfaces 404.
  • the folding surfaces 404 engage the fifth and seventh side regions so that the first-stage partially folded box 26 is folded along the third and sixth longitudinal crease lines 3L, 6L.
  • the fifth, seventh, ninth, tenth, eleventh and twelfth side regions are folded inwardly as best seen in Figure 13 .
  • the primary folding and securing station 400 also includes a folding head 406 that is positioned above the first-stage partially folded box 26 and is actuated to move downwardly by a pneumatic cylinder 408 into the interior of the box with the above-mentioned side regions folded over (i.e., extending substantially horizontally).
  • the folding head 406 (best seen in Figure 14 ) includes folding surfaces 410 that are actuated again by pneumatic cylinders 412, when the folding head 406 is positioned accurately within the interior of the box, to fold the box along the ninth, tenth, eleventh and twelfth longitudinal crease lines 9L, 10L, 11L, 12L to form the first and second inner longitudinal sidewalls 1SW, 2SW.
  • the primary folding and securing station 400 includes an ultrasonic welding assembly 414 to weld together the adjacent outer and inner longitudinal sidewalls 1SW' and 1SW, 2SW' and 2SW.
  • the ultrasonic welding assembly 414 includes three ultrasonic welding heads 416 along each side of the box to ultrasonically weld together the adjacent outer and inner longitudinal sidewalls 1SW' and 1SW, 2SW' and 2SW.
  • the welding heads 416 are actuated to move to a welding position in which they contact the first and second outer longitudinal sidewalls 1SW', 2SW' and are switched on for a preselected period of time to perform the ultrasonic weld and secure together the first outer and inner longitudinal sidewalls 1SW', 1SW and the second outer and inner longitudinal sidewalls 2SW', 2SW.
  • the welding heads 416 After being switched off, the welding heads 416 are held in the welding position for a preselected period of time to allow the weld to set before the welding heads 416 are then actuated to return to a non-welding position and the folding head 406 is actuated to move upwardly out of the box with its folding surfaces retracted.
  • the indexing assembly 310 is actuated once again so that the indexing flights 312 move the second-stage partially folded box 28 formed at the primary folding and securing station 400 to the secondary folding and securing station 500 which is best seen in Figures 16 to 18 .
  • the secondary folding and securing station 500 includes first and second folding surfaces 502, 504 which fold the second-stage partially folded box 28 along the fifth and eighth transverse crease lines 5T, 8T to form the first and second transverse flanges 1TF, 2TF of the fully erected box 22.
  • the first folding surface 502 is a fixed folding surface (or guide) that contacts the moving vertically-extending sixth side region 6 as the first-stage partially folded box 26 is moved laterally from the primary folding and securing station 400 into the secondary folding and securing station 500 by the indexing assembly 310.
  • the contact between the fixed first folding surface 502 and the sixth side region 6 folds the box along the fifth transverse crease line 5T to form the first transverse flange 1TF.
  • the second folding surface 504 is pivotally actuated by a pneumatic cylinder 506 to rotate about pivot axis 508 and thereby contact the eighth side region 8 to fold the box along the eighth transverse crease line 8T to form the second transverse flange 2TF.
  • the pneumatic cylinder 506, and hence the second folding surface 504 is actuated only when the indexing assembly 310 comes to rest and the box is positioned accurately at the secondary folding and securing station 500.
  • the secondary folding and securing station 500 includes an ultrasonic welding assembly with four welding heads 512 which are actuated to ultrasonically weld together the longitudinal and transverse flanges 1LF, 2LF, 1TF, 2TF.
  • the welding heads 512 are actuated to a welding position and switched on for a preselected period of time to perform the ultrasonic weld and secure together the longitudinal and transverse flanges 1LF, 2LF, 1TF, 2TF where they overlap.
  • the welding heads 512 are held in the welding position for a preselected period of time to allow the weld to set before they are then actuated to return to a non-welding position.
  • the ultrasonic welding is typically performed with the second folding surface 504 in the actuated position.
  • the indexing assembly 310 is actuated so that the indexing flights 312 move the fully erected box 22 from the secondary folding and securing station 500 to an outlet conveyor 600 which is best seen in Figure 19 .
  • the box erecting machine 50 includes safety guards and is operated under the control of a control unit with a suitable human machine interface (HMI).
  • HMI human machine interface
  • the box erecting machine 50 forms part of a processing plant where the fully erected box 22 is filled (e.g., with food products) and closed with a lid.

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Claims (15)

  1. Procédé pour ériger une ébauche plane pré-pliée (20) sous la forme d'une boîte (22), l'ébauche comprenant :
    • une région centrale sensiblement rectangulaire (24) qui forme une base plane (B) de la boîte érigée (22), et qui est délimitée par des première et deuxième lignes de pliage longitudinales (1L, 2L) qui forment des premier et deuxième bords inférieurs longitudinaux (1LBE, 2LBE) de la boîte érigée (22), et des première et deuxième lignes de pliage transversales (1T, 2T) qui forment des premier et deuxième bords inférieurs transversaux (1TBE, 2TBE) de la boîte érigée (22),
    • une première région latérale sensiblement rectangulaire (1) voisine de la région centrale (24), qui forme une première paroi latérale longitudinale extérieure (1SW) de la boîte érigée (22), la première région latérale (1) étant délimitée par la première ligne de pliage longitudinale (1L), une troisième ligne de pliage longitudinale (3L) qui forme un premier bord supérieur longitudinal (1LTE) de la boîte érigée (22), une troisième ligne de pliage transversale (3T) qui est une extension de la première ligne de pliage transversale (1T) et qui fait partie d'un premier bord vertical (1VE) de la boîte érigée (22), et une quatrième ligne de pliage transversale (4T) qui est une extension de la deuxième ligne de pliage transversale (2T) et qui fait partie d'un deuxième bord vertical (2VE) de la boîte érigée (22),
    • une deuxième région latérale sensiblement rectangulaire (2) voisine de la région centrale (24), qui forme une première paroi latérale transversale (1TSW) de la boîte érigée (22), la deuxième région latérale (2) étant délimitée par la première ligne de pliage transversale (1T), une cinquième ligne de pliage transversale (5T) qui forme un premier bord supérieur transversal (1TTE) de la boîte érigée (22), une quatrième ligne de pliage longitudinale (4L) qui est une extension de la première ligne de pliage longitudinale (1L) et qui forme une partie du premier bord vertical (1VE) de la boîte érigée (22), et une cinquième ligne de pliage longitudinale (5L) qui est une extension de la deuxième ligne de pliage longitudinale (2L) et qui forme une partie d'un troisième bord vertical (3VE) de la boîte érigée (22),
    • une troisième région latérale sensiblement rectangulaire (3) voisine de la région centrale (24), qui forme une deuxième paroi latérale longitudinale extérieure (2SW') de la boîte érigée (22), la troisième région latérale (3) étant délimitée par la deuxième ligne de pliage longitudinale (2L), une sixième ligne de pliage longitudinale (6L) qui forme un deuxième bord supérieur longitudinal (2LTE) de la boîte érigée (22), une sixième ligne de pliage transversale (6T) qui est une extension de la première ligne de pliage transversale (1T) et qui forme une partie du troisième bord vertical (3VE) de la boîte érigée (22), et une septième ligne de pliage transversale (7T) qui est une extension de la deuxième ligne de pliage transversale (2T) et qui forme une partie d'un quatrième bord vertical (4VE) de la boîte érigée (22),
    • une quatrième région latérale sensiblement rectangulaire (4) voisine de la région centrale (24), qui forme une deuxième paroi latérale transversale (2TSW) de la boîte érigée (22), la quatrième région latérale (4) étant délimitée par la deuxième ligne de pliage transversale (2T), une huitième ligne de pliage transversale (8T) qui forme un deuxième bord supérieur transversal (2TTE) de la boîte érigée (22), une septième ligne de pliage longitudinale (7L) qui est une extension de la première ligne de pliage longitudinale (1L) et qui forme une partie du deuxième bord vertical (2VE) de la boîte érigée (22), et une huitième ligne de pliage longitudinale (8L) qui est une extension de la deuxième ligne de pliage longitudinale (2L) et qui fait partie du quatrième bord vertical (4VE) de la boîte érigée (22),
    • une première région de coin sensiblement carrée (1CR) voisine des première et deuxième régions latérales (1, 2), la première région de coin (1CR) étant délimitée par la troisième ligne de pliage transversale (3T), la quatrième ligne de pliage longitudinale (4L), et des bords d'ébauche qui définissent un premier sommet d'ébauche (1A), et comprenant une ligne de pliage (1CL) qui s'étend du premier sommet d'ébauche (1A) à la jonction de la troisième ligne de pliage transversale (3T) et de la quatrième ligne de pliage longitudinale (4L),
    • une deuxième région de coin sensiblement carrée (2CR) voisine des deuxième et troisième régions latérales (2, 3), la deuxième région de coin (2CR) étant délimitée par la sixième ligne de pliage transversale (6T), la cinquième ligne de pliage longitudinale (5L), et des bords d'ébauche qui définissent un deuxième sommet d'ébauche (2A), et comprenant une ligne de pliage (2CL) qui s'étend du deuxième sommet d'ébauche (2A) à la jonction de la sixième ligne de pliage transversale (6T) et de la cinquième ligne de pliage longitudinale (5L),
    • une troisième région de coin sensiblement carrée (3CR) voisine des troisième et quatrième régions latérales (3, 4), la troisième région de coin (3CR) étant délimitée par la septième ligne de pliage transversale (7T), la huitième ligne de pliage longitudinale (8L), et des bords d'ébauche qui définissent un troisième sommet d'ébauche (3A), et comprenant une ligne de pliage (3CL) qui s'étend du troisième sommet d'ébauche (3A) à la jonction de la septième ligne de pliage transversale (7T) et de la huitième ligne de pliage longitudinale (8L),
    • une quatrième région de coin sensiblement carrée (4CR) voisine des quatrième et première régions latérales (4, 1), la quatrième région de coin (4CR) étant délimitée par la quatrième ligne de pliage transversale (4T), la septième ligne de pliage longitudinale (7L), et des bords d'ébauche qui définissent un quatrième sommet d'ébauche (4A), et comprenant une ligne de pliage (4CL) qui s'étend du quatrième sommet d'ébauche (4A) à la jonction de la quatrième ligne de pliage transversale (4T) et de la septième ligne de pliage longitudinale (7L),
    • une cinquième région latérale sensiblement rectangulaire (5) voisine de la première région latérale (1), qui forme une première bride longitudinale (1LF) de la boîte érigée (22), la cinquième région latérale (5) étant délimitée par la troisième ligne de pliage longitudinale (3L), une neuvième ligne de pliage longitudinale (9L), et des bords d'ébauche,
    • une sixième région latérale sensiblement rectangulaire (6) voisine de la deuxième région latérale (2), qui forme une première bride transversale (1TF) de la boîte érigée (22), la sixième région latérale (6) étant délimitée par la cinquième ligne de pliage transversale (5T), et des bords d'ébauche,
    • une septième région latérale sensiblement rectangulaire (7) voisine de la troisième région latérale (3), qui forme une deuxième bride longitudinale (2LF) de la boîte érigée (22), la septième région latérale (7) étant délimitée par la sixième ligne de pliage longitudinale (6L), une dixième ligne de pliage longitudinale (10L), et des bords d'ébauche,
    • une huitième région latérale sensiblement rectangulaire (8) voisine de la quatrième région latérale (4), qui forme une deuxième bride transversale (2TF) de la boîte érigée (22), la huitième région latérale (8) étant délimitée par la huitième ligne de pliage transversale (8T), et des bords d'ébauche,
    • une neuvième région latérale sensiblement rectangulaire (9) voisine de la cinquième région latérale (5), qui forme une première partie d'une première paroi latérale longitudinale intérieure (1SW) de la boîte érigée (22), la neuvième région latérale (9) étant délimitée par la neuvième ligne de pliage longitudinale (9L), une onzième ligne de pliage longitudinale (11L), et des bords d'ébauche,
    • une dixième région latérale sensiblement rectangulaire (10) voisine de la neuvième région latérale (9), qui forme une deuxième partie de la première paroi latérale longitudinale intérieure (1SW) de la boîte érigée (22), la dixième région latérale (10) étant délimitée par la onzième ligne de pliage longitudinale (11L), et des bords d'ébauche,
    • une onzième région latérale sensiblement rectangulaire (11) voisine de la septième région latérale (7), qui forme une première partie d'une deuxième paroi latérale longitudinale intérieure (2SW) de la boîte érigée (22), la onzième région latérale (11) étant délimitée par la dixième ligne de pliage longitudinale (10L), une douzième ligne de pliage longitudinale (12L), et des bords d'ébauche,
    • une douzième région latérale sensiblement rectangulaire (12) voisine de la onzième région latérale (11), qui forme une deuxième partie de la deuxième paroi latérale longitudinale intérieure (2SW) de la boîte érigée (22), la douzième région latérale (12) étant délimitée par la douzième ligne de pliage longitudinale (12L), et des bords d'ébauche ;
    dans lequel le procédé d'érection de l'ébauche plane pré-pliée (20) comprend :
    une première étape de pliage d'une ébauche positionnée le long (i) des première, deuxième, quatrième, cinquième, septième et huitième lignes de pliage longitudinales (1L, 2L, 4L, 5L, 7L, 8L), (ii) des première, deuxième, troisième, quatrième, sixième et septième lignes de pliage transversales (1T, 2T, 3T, 4T, 6T, 7T), et (iii) des lignes de pliage (1CL, 2CL, 3CL, 4CL) qui s'étendent à partir des premier, deuxième, troisième et quatrième sommets d'ébauche (1A, 2A, 3A, 4A), de façon à former une boîte partiellement pliée de premier stade (26), comprenant :
    une base plane (B) formée par la région centrale (24) de l'ébauche (20) ;
    des premier et deuxième bords inférieurs longitudinaux (1LBE, 2LBE) formés par les première et deuxième lignes de pliage longitudinales (1L, 2L) ;
    des premier et deuxième bords inférieurs transversaux (1TBE, 2TBE) formés par les première et deuxième lignes de pliage transversales (1T, 2T) ;
    une première paroi latérale longitudinale extérieure (1SW') formée par la première région latérale (1) et orientée de façon sensiblement perpendiculaire à la base (B) ;
    une première paroi latérale transversale (1TSW) formée par la deuxième région latérale (2) et orientée de façon sensiblement perpendiculaire à la base (B) ;
    une deuxième paroi latérale longitudinale extérieure (2SW') formée par la troisième région latérale (3) et orientée de façon sensiblement perpendiculaire à la base (B) ;
    une deuxième paroi latérale transversale (2TSW) formée par la quatrième région latérale (4) et orientée de façon sensiblement perpendiculaire à la base (B) ;
    un premier bord vertical (1VE) formé par la troisième ligne de pliage transversale (3T) et la quatrième ligne de pliage longitudinale (4L) ;
    un deuxième bord vertical (2VE) formé par la quatrième ligne de pliage transversale (4T) et la septième ligne de pliage longitudinale (7L) ;
    un troisième bord vertical (3VE) formé par la sixième ligne de pliage transversale (6T) et la cinquième ligne de pliage longitudinale (5L) ;
    un quatrième bord vertical (4VE) formé par la septième ligne de pliage transversale (7T) et la huitième ligne de pliage longitudinale (8L) ;
    un premier coin intégral formé par la première région de coin pliée (1CR) ;
    un deuxième coin intégral formé par la deuxième région de coin pliée (2CR) ;
    un troisième coin intégral formé par la troisième région de coin pliée (3CR) ; et
    un quatrième coin intégral formé par la quatrième région de coin pliée (4CR) ;
    une deuxième étape de pliage de la boîte partiellement pliée de premier stade (26) le long des troisième, sixième, neuvième, dixième, onzième et douzième lignes de pliage longitudinales (3L, 6L, 9L, 10L, 11L, 12L) de façon à former une boîte partiellement pliée de deuxième stade (28), comprenant :
    un premier bord supérieur longitudinal (1LTE) formé par la troisième ligne de pliage longitudinale (3L) ;
    un premier bord supérieur transversal (1TTE) formé par la cinquième ligne de pliage transversale (5T) ;
    un deuxième bord supérieur longitudinal (2LTE) formé par la sixième ligne de pliage longitudinale (6L) ;
    un deuxième bord supérieur transversal (2TTE) formé par la huitième ligne de pliage transversale (8T) ;
    une première bride longitudinale (1LF) formée par la cinquième région latérale (5) et orientée de façon sensiblement parallèle à la base (B) ;
    une deuxième bride longitudinale (2LF) formée par la septième région latérale (7) et orientée de façon sensiblement parallèle à la base (B) ;
    une première paroi latérale longitudinale intérieure (1SW) formée par les neuvième et dixième régions latérales (9, 10), la première paroi latérale longitudinale intérieure (1SW) comportant une première partie formée par la neuvième région latérale (9) et une deuxième partie formée par la dixième région latérale (10), et la deuxième partie étant orientée de façon sensiblement perpendiculaire à la base (B) et voisine d'une partie inférieure de la première paroi latérale longitudinale extérieure (1SW') et la première partie s'étendant selon un certain angle entre la deuxième partie et la première bride longitudinale (1LF) ; et
    une deuxième paroi latérale longitudinale intérieure (2SW) formée par les onzième et douzième régions latérales (11, 12), la deuxième paroi latérale longitudinale intérieure (2SW) comportant une première partie formée par la onzième région latérale (11) et une deuxième partie formée par la douzième région latérale (12), la deuxième partie étant orientée de façon sensiblement perpendiculaire à la base (B) et voisine d'une partie inférieure de la deuxième paroi latérale longitudinale extérieure (2SW') et la première partie s'étendant selon un certain angle entre la deuxième partie et la deuxième bride longitudinale (2LF) ;
    une troisième étape de fixation de la première paroi latérale longitudinale extérieure (1SW') à la première paroi latérale longitudinale intérieure (1SW) et de la deuxième paroi latérale longitudinale extérieure (2SW') à la deuxième paroi latérale longitudinale intérieure (2SW) ;
    une quatrième étape de pliage de la boîte partiellement pliée de deuxième stade (28) le long des cinquième et huitième lignes de pliage transversales (5T, 8T) de façon à former la boîte totalement érigée (22), comprenant :
    une première bride transversale (1TF) formée par la sixième région latérale (6) et orientée de façon sensiblement parallèle à la base (B) ; et
    une deuxième bride transversale (2TF) formée par la huitième région latérale (8) et orientée de façon sensiblement parallèle à la base (B) ; et
    une cinquième étape de fixation de la première bride transversale (1TF) aux première et deuxième brides longitudinales (1LF, 2FL), et de la deuxième bride transversale (2TF) aux première et deuxième brides longitudinales (1LF, 2LF).
  2. Procédé selon la revendication 1, comprenant de plus une étape de pré-pliage, entre les première et deuxième étapes, dans laquelle la boîte partiellement pliée de premier stade (26) est temporairement pliée le long des troisième et sixième lignes de pliage longitudinales (3L, 6L).
  3. Procédé selon la revendication 1 ou la revendication 2, dans lequel, lorsque les régions de coin (1CR, 2CR, 3CR, 4CR) sont pliées le long des lignes de pliage (1CL, 2CL, 3CL, 4CL) qui s'étendent à partir du sommet d'ébauche respectif (1A, 2A, 3A, 4A), elles forment des ailes de forme triangulaire (30) qui sont situées entre les parois latérales longitudinales extérieure et intérieure voisines, et dans lequel la troisième étape comprend de plus la fixation des premier et quatrième coins intégraux aux premières parois latérales longitudinales intérieure et extérieure (1SW, 1SW') et des deuxième et troisième coins intégraux aux deuxièmes parois latérales longitudinales intérieure et extérieure (2SW, 2SW').
  4. Procédé selon l'une quelconque des revendications précédentes, dans lequel la première partie de la première paroi latérale longitudinale intérieure (1SW), la première bride longitudinale (1LF) et une partie supérieure de la première paroi latérale longitudinale extérieure (1SW') définissent ensemble une première structure s'étendant de façon longitudinale de section transversale sensiblement triangulaire dans la boîte totalement érigée (22), et dans lequel la première partie de la deuxième paroi latérale longitudinale intérieure (2SW), la deuxième bride longitudinale (2LF) et une partie supérieure de la deuxième paroi latérale longitudinale extérieure (2SW') définissent ensemble une deuxième structure s'étendant de façon longitudinale de section transversale sensiblement triangulaire dans la boîte totalement érigée (22).
  5. Procédé selon l'une quelconque des revendications précédentes, dans lequel le procédé est mis en oeuvre par une machine d'érection de boîte (50) avec de multiples stations.
  6. Procédé selon la revendication 5, dans lequel la première étape est mise en oeuvre par une station de plongée (300), les deuxième et troisième étapes sont mises en oeuvre par une station de pliage et de fixation primaire (400), et les quatrième et cinquième étapes sont mises en oeuvre par une station de pliage et de fixation secondaire (500) .
  7. Procédé selon la revendication 6 lorsqu'elle dépend finalement de la revendication 2, dans lequel l'étape de pré-pliage est mise en oeuvre par la station de plongée (300) .
  8. Procédé selon l'une quelconque des revendications 5 à 7, dans lequel la boîte est maintenue sur un ensemble d'indexation (310) qui est actionné de façon latérale le long d'une piste d'indexation de façon à déplacer progressivement l'ébauche (20) d'une station à une autre.
  9. Procédé selon l'une quelconque des revendications 6 à 8, dans lequel la station de plongée (300) comprend un vide (302) défini par des surfaces de pliage fixes s'étendant de façon verticale (304, 306) qui sont dimensionnées et formées de façon à plier l'ébauche (20) le long des lignes de pliage longitudinales et transversales particulières et à former la boîte partiellement pliée de premier stade (26), dans lequel, de préférence, l'ébauche (20) est positionnée au-dessus du vide (302) et déplacée vers le bas dans le vide (302) de telle sorte que l'ébauche (20) soit pliée le long des lignes de pliage longitudinales et transversales particulières par le contact avec les surfaces de pliage (304, 306), et, de préférence, dans lequel des surfaces de pliage fixes additionnelles (308) sont formées de façon à plier l'ébauche (20) le long des lignes de pliage qui s'étendent à partir des sommets d'ébauche (1A, 2A, 3A, 4A) de façon à former les coins intégraux lorsque l'ébauche (20) est déplacée vers le bas dans le vide (302).
  10. Procédé selon la revendication 9, dans lequel l'ébauche (20) est maintenue sur un ensemble de portique (202) qui positionne l'ébauche (20) de façon précise au-dessus du vide (302) et qui est actionné de façon à se déplacer vers le bas dans le vide (302), dans lequel, de préférence, l'ensemble de portique (202) est actionné latéralement le long d'une piste de portique (208) et est adapté de façon à saisir l'ébauche (20) à partir d'une pile (102) d'ébauches (20) positionnées dans une station de saisie (200) de la machine d'érection de boîte (50), dans lequel, de préférence, les ébauches (20) sont empilées manuellement et la pile (102) est déplacée automatiquement vers une position prédéterminée dans la station de saisie (200), dans laquelle chaque ébauche (20) peut être saisie tour à tour par l'ensemble de portique (202), et, de préférence, dans lequel la machine d'érection de boîte (50) comprend un dispositif pour introduire un jet d'air comprimé en dessous de l'ébauche supérieure (20) lorsqu'elle est saisie par l'ensemble de portique (202) de façon à séparer celle-ci de l'ébauche sous-jacente (20) .
  11. Procédé selon la revendication 2 ou l'une quelconque des revendications 3 à 10 lorsqu'elles dépendent ou dépendent finalement de la revendication 2, dans lequel l'étape de pré-pliage comprend le pliage temporaire des cinquième et septième régions latérales (5, 7) vers l'intérieur, vers la base plane (B) de la boîte partiellement pliée de premier stade (26), le long des troisième et sixième lignes de pliage longitudinales (3L, 6L), puis le fait de permettre aux cinquième et septième régions latérales (5, 7) de revenir dans une position dans laquelle elles sont sensiblement coplanaires, respectivement, aux première et deuxième parois latérales longitudinales extérieures (1SW', 2SW').
  12. Procédé selon l'une quelconque des revendications 6 à 11 lorsqu'elles dépendent ou qu'elles dépendent finalement de la revendication 2, dans lequel la boîte partiellement pliée de premier stade (26) est déplacée vers la station de pliage et de fixation primaire (400) par l'ensemble d'indexation (310) une fois que l'étape de pré-pliage est achevée, dans lequel, de préférence, la station de pliage et de fixation primaire (400) comprend des surfaces de pliage (404) qui sont actionnées de façon à plier la boîte partiellement pliée de premier stade (26) le long des troisième et sixième lignes de pliage longitudinales (3L, 6L), dans lequel, de préférence, la station de pliage et de fixation primaire (400) comprend de plus une tête de pliage (406) qui est positionnée au-dessus de la boîte partiellement pliée de premier stade (26) et qui est actionnée de façon à se déplacer vers le bas dans l'intérieur de la boîte (26) avec les régions latérales pliées par-dessus, et, de préférence, dans lequel la tête de pliage (406) comprend des surfaces de pliage (410) qui sont actionnées, lorsque la tête de pliage (406) est positionnée avec précision à l'intérieur de la boîte, de façon à plier la boîte le long des neuvième, dixième, onzième et douzième lignes de pliage longitudinales (9L, 10L, 11L, 12L) de façon à former les première et deuxième parois latérales longitudinales intérieures (1SW, 2SW).
  13. Procédé selon la revendication 12, dans lequel la boîte partiellement pliée de deuxième stade (28) est déplacée vers la station de pliage et de fixation secondaire (500) par l'ensemble d'indexation (310), et, de préférence, dans lequel la station de pliage et de fixation secondaire (500) comprend des surfaces de pliage (502, 504) qui plient la boîte partiellement pliée de deuxième stade (28) le long des cinquième et huitième lignes de pliage transversales (5T, 8T) de façon à former les première et deuxième brides transversales (1TF, 2TF) de la boîte totalement érigée (22).
  14. Procédé selon la revendication 13, dans lequel une première surface de pliage (502) est une surface de pliage fixe qui plie la boîte le long de la cinquième ligne de pliage transversale (5T) lorsqu'elle est déplacée latéralement par l'ensemble d'indexation (310), et la surface de pliage fixe vient en contact avec la sixième région latérale s'étendant de façon verticale en déplacement (6), et dans lequel une deuxième surface de pliage (504) est actionnée de façon à plier la boîte le long de la huitième ligne de pliage transversale (8T) lorsque l'ensemble d'indexation (310) arrive au repos et que la boîte est positionnée avec précision dans la station de pliage et de fixation secondaire (500).
  15. Procédé selon l'une quelconque des revendications précédentes, comprenant de plus une sixième étape de perçage de la boîte totalement érigée (22) de façon à créer une ou plusieurs ouvertures à travers lesquelles un liquide peut être évacué à partir de la boîte (22).
EP16205216.1A 2015-12-23 2016-12-20 Procédé de montage d'ébauches Active EP3184452B1 (fr)

Applications Claiming Priority (1)

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GB1522720.0A GB2548072B (en) 2015-12-23 2015-12-23 Methods of erecting blanks

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EP3184452B1 true EP3184452B1 (fr) 2019-02-20

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Publication number Priority date Publication date Assignee Title
CN108466456A (zh) * 2018-02-14 2018-08-31 温州高晟机械有限公司 一种拼板式多功能制盒机
ES2967369A1 (es) * 2022-10-03 2024-04-29 Cartonajes Bernabeu S A U Recipiente

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US2714343A (en) * 1953-08-03 1955-08-02 Baljak Corp Devices for assembling flat box blanks into hollow folding boxes
JPS4321435Y1 (fr) * 1965-11-22 1968-09-09
FR2044362A5 (fr) * 1969-05-19 1971-02-19 Tailleur Fils Et Cie
JPS5142876A (ja) * 1974-10-05 1976-04-12 Hiroshi Tanaka Jikukaitenkudosochito kakuatsuryokuyokishunoyodanseibukuro
JPS51116772A (en) * 1975-04-05 1976-10-14 Gunze Kk Apparatus for automatically assembling foldable box
JPS5349577A (en) * 1976-10-16 1978-05-06 Morinaga & Co Liquidtight container prodvcing method*and liquidtight container
JPS5815030A (ja) * 1981-07-14 1983-01-28 Kyowa Chem Ind Co Ltd 消石灰
JPS5820640A (ja) * 1981-07-24 1983-02-07 洋光堂印刷紙器株式会社 折立て組紙箱の成形法
GB9804004D0 (en) * 1998-02-25 1998-04-22 Sca Packaging Ltd Trays
GB2390359B (en) * 2002-07-05 2005-11-02 Martin Peter Smith Partially erected carton
US7044359B1 (en) * 2003-08-12 2006-05-16 Jeremy Cohen Tray
US20090170678A1 (en) * 2007-12-28 2009-07-02 Weyerhaeuser Co. Container-forming assembly

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GB2548072A (en) 2017-09-13
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GB201522720D0 (en) 2016-02-03
GB2548072B (en) 2018-07-04

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