EP3284587B1 - Formgeber von kartonschachtelecken in montagemaschinen und verfahren - Google Patents

Formgeber von kartonschachtelecken in montagemaschinen und verfahren Download PDF

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Publication number
EP3284587B1
EP3284587B1 EP17159774.3A EP17159774A EP3284587B1 EP 3284587 B1 EP3284587 B1 EP 3284587B1 EP 17159774 A EP17159774 A EP 17159774A EP 3284587 B1 EP3284587 B1 EP 3284587B1
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Prior art keywords
bending
corners
former
cardboard
cardboard box
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EP17159774.3A
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English (en)
French (fr)
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EP3284587A1 (de
Inventor
Jose Boix Jaen
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Boix Maquinaria SL
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Boix Maquinaria SL
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Priority to PL17159774T priority Critical patent/PL3284587T3/pl
Publication of EP3284587A1 publication Critical patent/EP3284587A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/44—Folding sheets, blanks or webs by plungers moving through folding dies
    • B31B50/46—Folding sheets, blanks or webs by plungers moving through folding dies and interconnecting side walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/52—Folding sheets, blanks or webs by reciprocating or oscillating members, e.g. fingers
    • 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
    • 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 refers to a former of cardboard box corners from a die-cut sheet in an assembling machine.
  • tabs are defined which, after being folded, define a reinforcement positioned on each corner of the box.
  • the former is composed of a bending mechanism in charge of lifting the tab and folding it around the fastening plate in cooperation with a fastening mechanism for establishing the folding areas of the tabs. Afterwards, both mechanisms are removed and box assembly is started.
  • the former operates outside the mould, prior to the box assembly operation, therefore, it is applicable to any box assembly system, regardless of the type of cardboard used.
  • the invention also describes the corner forming procedure.
  • Document ES-2536581_A2 shows a sample of this technology, describing a cardboard box assembling machine which includes four movable corner devices to make it adaptable to different box sizes.
  • the reinforcement generally used is simple, created by means of tabs protruding from two parallel lateral sides of the box and incorporating glue in order to, after being bent 90 degrees, be pressed against the adjoining sides in the mould and form the box.
  • Another type of reinforcement known comprises a larger tab incorporating two foldings to form a "V" with a flap, such that a triangular structure is configured and the flap is used to attach to the adjoining sides by means of glue included thereon.
  • These reinforcements are created by means of mechanisms that, through different operations, configure the way the tabs are to be subsequently attached to the adjoining side, forming the reinforced corner.
  • the configuration of the reinforced corners entails that the assembling machines are increasingly more complex, having an impact not only on the initial cost of the machine, but also on more complex maintenance tasks.
  • the present invention solves this problem, which is not addressed in the current state of the art, by describing a mechanism capable of creating reinforced corners in a cardboard box in a single operation, with the resulting savings as to the cost of manufacturing the assembling machine and its maintenance.
  • the invention provides a new former of cardboard box corners in assembling machines, starting from a die-cut cardboard sheet wherein some tabs are defined to form the corners and located in two parallel side areas of the box once it is assembled.
  • the tabs are intended to be folded by a bending mechanism in cooperation with a fastening mechanism, by means of which the folding areas of the tabs are established, such that said tabs are finally attached to the adjoining sides of the box once it is assembled.
  • the main novelty of the former of the invention is the fact that it is characterised in that it comprises a bending mechanism that in turn comprises a vertically displaceable frame, which is provided with a horizontal beam, both ends of which comprise a bending head that includes a gusset plate, for bending the tab of two corners of a same side of the box.
  • the gusset plate is attached to a gear to provide it with an angular bending movement of the tab.
  • the gusset plate is composed of a pushing flange intended for bending the tab, and a pressure flange intended for configuring the folding of the tab by pressing it through one side.
  • the gear is configured to provide the gusset plate, through an arm, with a 90-degree rotation movement. This configuration allows for the bending of the tabs, based on an L-shaped configuration, in cooperation with the fastening mechanism, as described in the exemplary embodiment of the invention.
  • the gusset place may be replaced in order to mount a gusset plate with a configuration adapted to the different bendings desired for the tabs, such as, for example, a triangular folding, etc.
  • the bending heads are located in both oblong holes of the beam and positioned symmetrically with respect to the fastening mechanism, such that the position of each bending head is variable to adjust it to the dimensions of the box to be formed.
  • the bending heads are mechanically attached such that they move symmetrically with respect to the fastening mechanism, thus facilitating and simplifying its adjustment to adapt to the different box sizes.
  • the fastening mechanism comprises a presser, by means of which the cardboard sheet is immobilised in the assembling machine and, in addition, it comprises two fasteners by means of which the bending area of the tabs of the two corners of a same side of the box are defined.
  • the bending of the tabs is carried out through the bending mechanism in the areas established by the fasteners.
  • the two fasteners of the fastening mechanism are arranged in a gib through which they may slide and be positioned symmetrically with respect to the presser, in order to allow for the adjustment of their position, thus adapting to the different dimensions the boxes may have.
  • the fastener has a rectangular configuration with a height defining the folding area of the tab.
  • the invention is intended to comprise two bending mechanisms to actuate them simultaneously and form the four corners of a box in a single operation.
  • the invention describes as well the procedure to form corners in a cardboard box.
  • the present invention refers to a former of cardboard box corners from a die-cut sheet (1) located in an assembling machine.
  • the former of corners consists in creating reinforcements by bending tabs (2) included in the die-cut sheet (1).
  • the configuration of this reinforcement may be carried out by printing in the tab several shapes or geometries, such as a triangular turret, in the preferred embodiment an L-shaped configuration has been chosen.
  • the tab (2) is divided into three parts, leaving the lower and intermediate parts, both parts closest to the cardboard sheet (1), folded one on top of the other, perpendicularly to the sheet (1), and the upper part supported on the cardboard sheet (1).
  • the upper part of the tab (2) will be attached to the cardboard sheet (1) through the area of the adjoining lateral side.
  • the cardboard sheet (1) includes glue in previously defined areas where the different parts will be attached. Logically, when speaking of the glue attachment, it is carried out as flexible as possible, allowing for any type of adhesive, silicone, glue, etc.
  • the areas where the glue is incorporated may be found either in the body of the cardboard sheet or in the tabs (2), indifferently.
  • the assembling machine contains a space where the cardboard sheets (1) are stored and transported individually and horizontally to the forming area before being introduced in the mould by being vertically pushed by a pushing piston (12).
  • the former of the invention incorporates two bending heads (6), since an assembled box will have at least two corners.
  • a fastening mechanism (3) cooperates with the bending heads (6), as described below.
  • Figure 1 shows the forming area of a cardboard box assembling machine. This figure displays a cardboard box assembling machine, where the following may be observed: a pushing piston (12), one of the guiding elements (11) to guide the cardboard sheet (1) to be assembled towards the mould, one of the bending heads (6) and the fastening mechanism (3) for bending the tabs (2) that will form the corners.
  • Figure 2 shows the assembling machine of Figure 1 in an operating situation, wherein a die-cut cardboard sheet has been introduced in order to work thereupon.
  • the fastening mechanism (3) may be appreciated in an operating position.
  • the fastening mechanism (3) comprises, as main elements, a presser (4), in charge of fastening and releasing the cardboard sheet (1) in the assembling machine and two fasteners (5), located symmetrically with respect to the presser (4) and located restricting the folding line of the tabs (2).
  • the figure represents how, on the one hand, the presser (4) has been deployed to fasten the position of the cardboard sheet (1). On the other, the fasteners (5) have also been deployed to restrict and define the folding position of the tabs (2).
  • the fastening mechanism (3) acquires this position when it is detected that a sheet (1) is in position to be mounted.
  • Material control and defining elements for the different box forming stages have not been represented nor described in the figures since they are usual elements in the state of the art.
  • the presser (4) is composed, basically, of a platform (17) attached to a vertical cylinder (18) that receives energy to transfer movement.
  • the vertical cylinder (18) is pneumatic, but it could be electric or hydraulic.
  • the presser (4) has a vertical linear movement, towards the sheet (1), to immobilise it, and in the opposite direction to release it, only allowing for the extended and retracted positions.
  • each of the fasteners (5) is basically composed of a protrusion that ends in a plate, of a specific size, moved by a pneumatic activation mechanism (13) which, like in the case of the presser (4), may also be electric or hydraulic.
  • the fastener (5) acts as a stop to facilitate the folding movement of the tab (2) once the bending head (6) is actuated.
  • the movement of the fastener (5) is linear and horizontal allowing only the extended or retracted positions to position on the sheet (1) or outside it, respectively.
  • the movement of the fasteners (5) is synchronised with that of the presser (4).
  • the position of the two fasteners (5), located on each of the sides of the presser (4), may be adjusted based on the size of the cardboard sheet (1) to be handled.
  • the adjustment may be carried out independently on each of the fasteners (5) or, preferably, simultaneously on both, for which they need to be mechanically connected.
  • the assembling machine is typically arranged with two formers, operating on both of the parallel sides of the sheet (1), and thus assembling a closed box through its four lateral sides.
  • a bending head (6) is shown in detail in Figure 3 .
  • Two bending heads (6) are fastened to a horizontal beam (15a) which, as indicated, are always in pairs and, due to the symmetry of the boxes, are positioned symmetrically with respect to a fastening mechanism (3).
  • the bending heads (6) are fastened to the beam (15a) in both oblong holes (16), such that its position may vary. This is so because the bending heads (6) may be used for boxes of different sizes.
  • the position of each bending head (6) may be obtained manually and independently for each of them, although, preferably, the positioning is carried out by electric means and simultaneously, for the purposes of which both bending heads (6) are mechanically attached, to prevent any errors in the positioning.
  • Figure 4 shows one of the bending heads (6) actuating on the related tab (2). This figure shows a stage following that shown in Figure 2 . This means that the bending heads (6) will only actuate once the fastening mechanism (3) is extended.
  • Figure 3 shows an enlarged bending head (6) to view its components in detail. It comprises a gusset plate (7) connected to a body by means of an arm (10) which, attached to some gears, allows for a rotating movement.
  • the gusset plate (7) is configured with two flanges (8, 9), a pushing flange (8) actuating on the tab (2) and in contact with the tab (2) at all times during the folding process, and a pressure flange (9) in charge of maintaining the appropriate shape in the reinforcement configuration created.
  • the pressure flange (9), in resting position, is in horizontal position, with the attachment to the arm (10) being located in the upper side.
  • Bending heads (6) have a linear vertical movement from a resting position in a lower position towards an actuated position in an upper position, where it is in the operating position. In this position, the gusset plate (7) is actuated to proceed to the folding of the tabs (2) by means of the rotation movement.
  • the vertical movement of the bending heads (6) is carried out by vertically displacing the frame (15).
  • the bending heads (6) conduct the movement from the resting position towards the operating position, once the fasteners (5) have been extended. With this movement, each bending head (6) pushes a tab (2), through the pushing flange (8) of the gusset plate (7), to leave it in vertical position. The bending of the tab (2) is carried out with the help of the related fastener (5). Up to this movement, the arm (10) has not been actuated yet to move the gusset plate (7). Once the tab (2) has been lifted in vertical position, the gusset plate (7) is actuated, which rotates pushing the tab (2) with the pushing flange (8) to proceed to fold it around the fastener (5).
  • the gusset plate (7) movement continues while the upper part of the tab (2) comes into contact with the cardboard sheet (1) and begins to fold.
  • the intermediate part begins to fold around the fastener (5) and is progressively pushed by the pressure flange (9) of the gusset plate (7) until the gusset plate (7) reaches its final position, wherein the intermediate part of the tab (2) is positioned throughout the fastener (5) and the upper part of the tab (2) is positioned on the cardboard sheet, in an L-shaped configuration.
  • the gusset plate (7) returns to its retracted position, and the bending heads (6) return to their lower resting position, withdrawing from the sheet (1).
  • the activation mechanism (13) withdraws the fasteners (5) synchronously with the turning of the pushing flange (8), that is, when the pushing flange (8) begins to turn, the fasteners (5) are withdrawn, and the presser (4) is actuated to release the sheet. This is shown in Figure 6 , wherein the cardboard sheet (1) remains with the tabs (2) folded.
  • the pushing piston (12) begins to act pushing the sheet (1) towards the mould, helped by the guiding elements (11) for the box assembly.
  • Figure 7 shows the box entering into the mould to be assembled with the tabs (2) already formed, and the rest of the forming of the box is carried out in the traditional way, therefore, it is not described since it is not the object of the invention.
  • the invention describes as well the procedure to form cardboard box corners from a die-cut sheet in an assembling machine performed by the former before described.
  • the procedure comprises the following steps:

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Claims (15)

  1. Formgeber zum Erzeugen von Kartonschachtelecken aus einem gestanzten Kartonbogen (1) in einer Montagemaschine, wobei Laschen (2), die Ecken in Bereichen von zwei parallelen Seiten des Kartons bilden, wenn der Karton zusammengestellt wird, und vorgesehen sind, um gefaltet zu werden, in Zusammenwirkung mit einem Befestigungsmechanismus (3), der Faltbereiche der Laschen vorsieht, sodass die Laschen an den benachbarten Seiten des Kartons befestigt werden, wenn der Karton zusammengestellt wird, definiert werden, wobei der Formgeber dadurch gekennzeichnet ist, dass er einen Biegemechanismus umfasst, der wiederum umfasst:
    einen Rahmen (15), der vertikal versetzt werden kann und mit einem horizontalen Balken (15a) versehen ist, dessen beide Enden umfassen:
    einen Biegekopf (6), der ein Knotenblech (7) zum Biegen der Lasche (2) von zwei Ecken einer gleichen Seite des Kartons umfasst, wobei das Knotenblech (7) an einem Zahnrad angebracht ist, um mit einer Winkelbewegung für das Biegen der Lasche versehen zu werden,
    sodass der Biegemechanismus konfiguriert ist zum Formen der zwei Ecken in nur einer Operation einer vertikalen Verschiebung in einer Oben-Unten-Richtung des Rahmens (15) und einer Winkelverschiebung in einer Vorne-Hinten-Richtung des Knotenblechs (7).
  2. Formgeber zum Erzeugen von Kartonschachtelecken in einer Montagemaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Knotenblech (7) konfiguriert wird durch einen Schiebeflansch (8), der für das Biegen der Lasche (2) vorgesehen ist, und einen Pressflansch (9), der für das Falten der Lasche (2) durch das Ausüben eines Drucks auf eine Seite vorgesehen ist, und dass das Zahnrad konfiguriert ist zum Vorsehen des Knotenblechs (7) über einen Arm (10) mit einer 90-Grad-Drehbewegung.
  3. Formgeber zum Erzeugen von Kartonschachtelecken in einer Montagemaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Knotenblech (7) austauschbar ist und eine für das an den Laschen (2) auszuführende Biegen angepasste Konfiguration aufweist.
  4. Formgeber zum Erzeugen von Kartonschachtelecken in einer Montagemaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Biegeköpfe (6) in zwei länglichen Löchern (16) des Balkens (15a) positioniert und symmetrisch in Bezug auf den Befestigungsmechanismus (3) angeordnet sind, sodass die Position jedes Biegekopfs (6) variiert werden kann.
  5. Formgeber zum Erzeugen von Kartonschachtelecken in einer Montagemaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Biegeköpfe (6) mechanisch derart befestigt sind, dass sich die Biegeköpfe symmetrisch in Bezug auf den Befestigungsmechanismus (3) bewegen.
  6. Formgeber zum Erzeugen von Kartonschachtelecken in einer Montagemaschine nach Anspruch 1, dadurch gekennzeichnet, dass der Befestigungsmechanismus (3) eine Presseinrichtung (4) zum Festhalten des Kartonbogens (1) in der Montagemaschine und zwei Befestigungsglieder (5) zum Definieren des Biegebereichs der Laschen (2) von zwei Ecken der gleichen Seite des Kartons umfasst.
  7. Formgeber zum Erzeugen von Kartonschachtelecken in einer Montagemaschine nach Anspruch 6, dadurch gekennzeichnet, dass die zwei Befestigungsglieder (5) des Befestigungsmechanismus (3) in einer Leiste (14) angeordnet sind, durch welche die zwei Befestigungsglieder verschoben und symmetrisch in Bezug auf die Presseinrichtung (4) positioniert werden können.
  8. Formgeber zum Erzeugen von Kartonschachtelecken in einer Montagemaschine nach Anspruch 7, dadurch gekennzeichnet, dass die Befestigungsglieder (5) mechanisch derart befestigt sind, dass sich die Befestigungsglieder symmetrisch in Bezug auf die Presseinrichtung (4) bewegen.
  9. Formgeber zum Erzeugen von Kartonschachtelecken in einer Montagemaschine nach einen der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass das Befestigungsglied (5) eine rechteckige Konfiguration mit einer den Faltbereich der Lasche (2) definierenden Höhe aufweist.
  10. Formgeber zum Erzeugen von Kartonschachtelecken in einer Montagemaschine nach einem der vorstehenden Ansprüche, gekennzeichnet durch zwei Biegemechanismen für eine gleichzeitige Betätigung und für das Ausbilden von vier Ecken eines Kartons in einer einzelnen Operation.
  11. Formgeber zum Erzeugen von Kartonschachtelecken in einer Montagemaschine nach einem der vorstehenden Ansprüche, gekennzeichnet durch einen Schiebekolben (12) zum Einführen von Kartonbögen (1) in eine Form und durch Führungselemente (11) zum Führen des zu montierenden Kartonbogens (1) zu der Form.
  12. Prozedur zum Erzeugen von Kartonschachtelecken aus einem gestanzten Bogen in einer Montagemaschine, die den Formgeber gemäß Anspruch 11 und einem der Ansprüche 6 bis 9 verwendet, dadurch gekennzeichnet, dass die Prozedur die folgenden Schritte umfasst:
    a) Einführen eines Kartonbogens (1) in den Formungsbereich der Montagemaschine,
    b) Vorschieben der Presseinrichtung (4), um die Position des Kartonbogens (1) zu fixieren,
    c) Vorschieben der Befestigungsglieder (5), um die Faltposition der Laschen (2) zu beschränken und zu definieren,
    d) Betätigen der Biegeköpfe (6), um die Laschen (2) in eine vertikale Position zu schieben,
    e) Betätigen der die Schiebeflansche (8) drehenden Knotenbleche (7), um die Laschen (2) um die entsprechenden Befestigungsglieder (5) herum zu falten,
    f) Zurückziehen der Befestigungsglieder (5),
    g) Zurückziehen der Knotenbleche (7)
    h) Zurückziehen der Biegeköpfe (6),
    i) Zurückziehen der Presseinrichtung (4), um den Kartonbogen (1) freizugeben,
    j) Betätigen des Schiebekolbens (12), um den Kartonbogen (1) vertikal in die Form zu bewegen und die Schachtel durch das Gleiten entlang der Führungselemente (11) zu formen.
  13. Prozedur zum Formen von Kartonschachtelecken aus einem gestanzten Bogen in einer Montagemaschine nach Anspruch 12, dadurch gekennzeichnet, dass auf den Schritt f) der folgende zusätzliche Schritt folgt:
    k) Pressen des Pressflansches (9) gegen die Lasche (2), um die Form der erzeugten Verstärkungskonfiguration aufrechtzuerhalten.
  14. Prozedur zum Formen von Kartonschachtelecken aus einem gestanzten Bogen in einer Montagemaschine nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass die Schritte b) und c) synchronisiert ausgeführt werden.
  15. Prozedur zum Formen von Kartonschachtelecken aus einem gestanzten Bogen in einer Montagemaschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Schritte f) und g) synchronisiert ausgeführt werden.
EP17159774.3A 2016-08-19 2017-03-08 Formgeber von kartonschachtelecken in montagemaschinen und verfahren Active EP3284587B1 (de)

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PL17159774T PL3284587T3 (pl) 2016-08-19 2017-03-08 Urządzenie formujące i sposób formowania naroży pudełek tekturowych w maszynach montujących

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ES201631106A ES2655311B1 (es) 2016-08-19 2016-08-19 Conformador de esquinas de cajas de cartón en máquinas montadoras

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EP3284587B1 true EP3284587B1 (de) 2019-04-17

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CN110421896A (zh) * 2019-07-23 2019-11-08 东莞市坚基包装机械有限公司 一种免贴角免模具天地盖盒成型机构
CN113246531B (zh) * 2021-03-30 2022-11-29 山东叶华纸制品包装有限公司 一种瓦楞纸箱生产用封箱装置
CN117984610B (zh) * 2024-04-03 2024-05-31 联翔(莆田)包装有限公司 一种环保纸箱的生产设备及其生产方法

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ES2655311A1 (es) 2018-02-19
ES2729117T3 (es) 2019-10-30
EP3284587A1 (de) 2018-02-21
ES2655311B1 (es) 2018-11-13
PL3284587T3 (pl) 2019-10-31

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