EP2228207B1 - Method for manufacturing bending lines in a sheet of material and device for executing the method - Google Patents

Method for manufacturing bending lines in a sheet of material and device for executing the method Download PDF

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Publication number
EP2228207B1
EP2228207B1 EP10153408.9A EP10153408A EP2228207B1 EP 2228207 B1 EP2228207 B1 EP 2228207B1 EP 10153408 A EP10153408 A EP 10153408A EP 2228207 B1 EP2228207 B1 EP 2228207B1
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European Patent Office
Prior art keywords
creasing
sheet
edge
tipped
plate
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EP10153408.9A
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German (de)
French (fr)
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EP2228207A2 (en
EP2228207A3 (en
Inventor
Rolf Sinn
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Karl Marbach GmbH and Co KG
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Karl Marbach GmbH and Co KG
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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
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/08—Creasing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/25—Surface scoring
    • B31B50/252—Surface scoring using presses or dies

Definitions

  • the invention relates to a method for producing bending lines in a material sheet, in particular in a cardboard sheets, according to the preamble of patent claim 1, and an apparatus for performing this method according to the preamble of claim 2.
  • creases are produced in the cardboard material in a punching tool at the points intended for bending.
  • a carrier plate creasing which have a creasing edge at its end remote from the carrier plate.
  • the scoring line On one of the support plate opposite punching-scoring plate is the scoring line opposite each provided a creasing channel.
  • the carrier plate and the punching scoring plate are moved toward each other, the cardboard material is forced with the score line into the scoring channel.
  • This process creates a deformation in the cardboard material that predetermines a bending of the folding box.
  • a suitable combination of the geometries of the crease line and the creasing channel must always be carried out.
  • the formation of the grooves in the cardboard material significantly reduces the force required to bend or fold the carton at the bending point.
  • Corresponding devices are for example in the DE 39 28 916 C1 or the DE 38 31 393 C2 disclosed.
  • the US 2,806,413 A describes a method in which a sheet of material is passed between an upper roll and a lower roll.
  • the lower roller has a circumferential groove in which a wire is disposed extending beyond the outer surface of the lower drum.
  • the wire opposite two spaced-apart creasing projections are provided on the upper roller, between which a creasing channel is formed, wherein the tips of the creasing projections are located laterally outside of the wire and the groove.
  • the creasing protrusions clamp the sheet portion against the cylindrical surface of the lower roll and press into the sheet portion without cutting it.
  • the grooved arc is folded around the two spaced groove grooves formed by the grooving projections such that the grooved groove formed by the wire lies on the outside of the finished product.
  • the US 2,949,827 discloses a punching tool having a carrier plate and a punching scoring plate, the carrier plate being moved in the direction of the punching scoring plate to form grooves.
  • a crease line is attached on the support plate.
  • a strip is glued to the punching-scoring plate, which has a pair of spaced-apart ribs, between which a creasing channel is formed and which are located laterally outside the crease line.
  • the JP 2006-240036A discloses a device for producing bending lines in a sheet of material, in particular in a cardboard sheet, with a carrier, from the top of which extends at least one creasing line, which has a creasing edge at its end facing away from the carrier.
  • the carrier is opposed by a punching-corrugated head, on which the at least one crease line opposite a creasing channel is provided.
  • the side inner walls of the Rillkanals extend upwardly and obliquely outwards and terminate in each case in a tip edge, wherein the tip edges in each case with respect to the score line outwardly offset parallel to this extend.
  • pressure surfaces which run parallel to the tip edges and are offset relative to the creasing edge in the direction of the carrier plate, are provided opposite the tip edges.
  • the tip edges are formed and arranged to form grooves in the sheet of material.
  • the invention has for its object to provide a method and apparatus for producing bending lines in a sheet of material, especially in a cardboard sheet, which allow accurate bending of a sheet of material along the bending line with little effort.
  • a groove is formed in one surface of a sheet of material, and in the other surface two grooves are provided on the outside adjacent to the groove grooves.
  • the creasing factor is a measure of the creasing behavior of a grooved carton as compared to an unperforated sample.
  • each tip edge preferably extends an outer wall downwardly and obliquely outwards, wherein the angle between a perpendicular to the punching-rill plate by the corresponding tip edge extending plane and the side inner walls 0 ° to 45 °, preferably about 25 °, and Angle between this plane and the outer walls 20 ° to 75 °, preferably about 45 °.
  • pressure surfaces which run parallel to the tip edges and with respect to the creasing edge, are provided on the crease line opposite the tip edges are offset in the direction of the support plate. These pressure surfaces are expediently formed from the underside of pressure strips, which are attached to the outer sides of the score line or form a unit with the score line.
  • FIG. 1 a cross section through a punching tool is shown in a region in which a scoring is performed in a cardboard sheet.
  • a crease line 10 is fixed to the underside of a support plate (not shown) and has a creasing edge 12 at its free end.
  • the crease line 10 is movable by means of the support plate in the direction of a punching and scoring plate 11 in order to form a scoring groove 24 in a cardboard sheet 22 inserted between the support plate and the punching scoring plate 11.
  • a recess 30 is formed, the bottom 31 is parallel to the support plate and perpendicular to the score line 10.
  • a creasing channel 41 is formed on the punching-grooved plate 11, which is bounded laterally by two triangular cross-section, parallel to the longitudinal direction of the score line 10 extending projections 34, 36 projecting from the bottom 31 of the recess 30.
  • the facing sides of the projections 34, 36 form side inner walls 40, 43 of the Rillkanals 41.
  • These side walls 40, 43 extend upward obliquely outwards and terminate in each case in a tip edge 42 and 44, of which an outer wall 38, 39 obliquely downward extends to the bottom 31 of the recess 30.
  • the angle ⁇ between the outer walls 38, 39 and a plane passing through the tip edges 42 and 44 perpendicular to the punching-rill plate 11 is 20 ° to 75 °, preferably about 45 °.
  • the angle ⁇ between the side inner walls 40 and 43 and a plane passing through the tip edges 42 and 44, respectively, perpendicular to the punching-scoring plate 11 is 0 ° to 45 °, preferably about 25 °.
  • pressure strips 14, 16 are mounted, which have on its underside parallel to the creasing edge 12 extending pressure surfaces 18, 20, above the Top edges 42 and 44 are arranged.
  • the pressure surfaces 18, 20 are offset relative to the creasing edge 12 upwards by an amount which is less than the thickness of the material sheet 22, preferably between 0.1 mm and 0.8 mm.
  • the tip edges 42, 44 are offset with respect to the outside of the score line 10 by 1.1 mm to 1.9 mm, preferably by 1.3 mm.
  • the depth of the groove channel 41 is 0.2 mm to 0.8 mm, preferably 0.4 mm.
  • the tip edges 42, 44 of the projections 34, 36 press from below into the material of the cardboard sheet 22, wherein by the pressure surfaces 18, 20 a counter pressure is generated, so that the cardboard sheet 22 is scribed on the underside, wherein the lateral distance between scoring and the adjacent groove side wall 26, 28 corresponds to the lateral distance between the outside of the score line 10 and the respective tip edge 42, 44.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Making Paper Articles (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Biegelinien in einem Materialbogen, insbesondere in einem Kartonbögen, nach dem Oberbegriff des Patentanspruchs 1, sowie eine Vorrichtung zur Durchführung dieses Verfahrens nach dem Oberbegriff des Patentanspruchs 2.The invention relates to a method for producing bending lines in a material sheet, in particular in a cardboard sheets, according to the preamble of patent claim 1, and an apparatus for performing this method according to the preamble of claim 2.

Bei der Herstellung von Faltschachteln werden in einem Stanzwerkzeug an den für eine Biegung vorgesehenen Stellen Rillungen im Kartonmaterial erzeugt. Hierzu erstrecken sich von der Unterseite einer Trägerplatte Rilllinien, die an ihrem der Trägerplatte abgewandten Ende eine Rillkante aufweisen. Auf einer der Trägerplatte gegenüberliegenden Stanz-Rillplatte ist den Rilllinien gegenüberliegend jeweils ein Rillkanal vorgesehen. Wenn die Trägerplatte und die Stanz-Rillplatte zueinander bewegt werden, wird das Kartonmaterial mit der Rilllinie in den Rillkanal gezwängt. Dieser Vorgang erzeugt im Kartonmaterial eine Verformung, die ein Biegen der Faltschachtel vorgibt. Je nach Kartonzusammensetzung und -dicke muss immer wieder eine geeignete Kombination der Geometrien der Rilllinie zum Rillkanal erfolgen. Durch die Bildung der Rillnuten in dem Kartonmaterial wird der Kraftaufwand zum Biegen bzw. Umklappen des Kartons an der Biegestelle deutlich verringert. Entsprechende Vorrichtungen sind beispielsweise in der DE 39 28 916 C1 oder der DE 38 31 393 C2 offenbart.In the manufacture of folding cartons, creases are produced in the cardboard material in a punching tool at the points intended for bending. For this purpose, extending from the underside of a carrier plate creasing, which have a creasing edge at its end remote from the carrier plate. On one of the support plate opposite punching-scoring plate is the scoring line opposite each provided a creasing channel. When the carrier plate and the punching scoring plate are moved toward each other, the cardboard material is forced with the score line into the scoring channel. This process creates a deformation in the cardboard material that predetermines a bending of the folding box. Depending on the carton composition and thickness, a suitable combination of the geometries of the crease line and the creasing channel must always be carried out. The formation of the grooves in the cardboard material significantly reduces the force required to bend or fold the carton at the bending point. Corresponding devices are for example in the DE 39 28 916 C1 or the DE 38 31 393 C2 disclosed.

Darüber hinaus ist es bekannt, Kartonmaterial an den Biegestellen einzuritzen, jedoch nicht komplett zu durchschneiden.In addition, it is known to board cardboard material at the bends, but not completely cut through.

Es gibt jedoch immer wieder Anwendungen, bei denen die beiden obengenannten Kartonbiegetechniken alleine nicht den gewünschten Erfolg bringen.However, there are always applications in which the two above-mentioned Kartonbiegetechniken alone do not bring the desired success.

Die US 2 806 413 A beschreibt ein Verfahren, bei dem ein Materialbogen zwischen einer oberen Walze und einer unteren Walze hindurch geführt wird. Die untere Walze weist eine Umfangsnut auf, in der ein Draht angeordnet ist, der sich über die Außenfläche der unteren Trommel hinaus erstreckt. Dem Draht gegenüberliegend sind an der oberen Rolle zwei im Abstand zueinander angeordnete Rillvorsprünge vorgesehen, zwischen denen ein Rillkanal gebildet wird, wobei sich die Spitzen der Rillvorsprünge seitlich außerhalb des Drahtes und der Nut befinden. Die Rillvorsprünge klemmen den Bogenabschnitt gegen die zylindrische Fläche der unteren Walze und drücken in den Bogenabschnitt ein, ohne ihn zu schneiden. Der gerillte Bogen wird um die zwei durch die Rillvorsprünge ausgebildeten, im Abstand zueinander angeordneten Rillnuten so gefaltet, dass die durch den Draht geformte Rillnut an der Außenseite des fertigen Produktes liegt.The US 2,806,413 A describes a method in which a sheet of material is passed between an upper roll and a lower roll. The lower roller has a circumferential groove in which a wire is disposed extending beyond the outer surface of the lower drum. The wire opposite two spaced-apart creasing projections are provided on the upper roller, between which a creasing channel is formed, wherein the tips of the creasing projections are located laterally outside of the wire and the groove. The creasing protrusions clamp the sheet portion against the cylindrical surface of the lower roll and press into the sheet portion without cutting it. The grooved arc is folded around the two spaced groove grooves formed by the grooving projections such that the grooved groove formed by the wire lies on the outside of the finished product.

Die US 2 949 827 offenbart ein Stanzwerkzeug mit einer Trägerplatte und einer Stanz-Rillplatte, wobei die Trägerplatte zur Ausbildung von Rillnuten in Richtung der Stanz-Rillplatte bewegt wird. An der Trägerplatte ist eine Rilllinie angebracht. Unterhalb der Rilllinie ist an der Stanz-Rillplatte ein Streifen aufgeklebt, der ein Paar im Abstand voneinander angeordneter Rippen aufweist, zwischen denen ein Rillkanal ausgebildet ist und die sich jeweils seitlich außerhalb der Rilllinie befinden. Wenn die Trägerplatte in Richtung der Stanz-Rillplatte bewegt wird, wird der Bogen in den Rillkanal zwischen den Rippen durch die Rilllinie eingedrückt, wodurch eine Rillnut gebildet wirdThe US 2,949,827 discloses a punching tool having a carrier plate and a punching scoring plate, the carrier plate being moved in the direction of the punching scoring plate to form grooves. On the support plate a crease line is attached. Below the crease line, a strip is glued to the punching-scoring plate, which has a pair of spaced-apart ribs, between which a creasing channel is formed and which are located laterally outside the crease line. When the carrier plate is moved in the direction of the punching-scoring plate, the sheet is pressed into the groove between the ribs by the crease line, whereby a groove groove is formed

Die JP 2006-240036A offenbart eine Vorrichtung zur Herstellung von Biegelinien in einem Materialbogen, insbesondere in einem Kartonbogen, mit einem Träger, von dessen Oberseite sich wenigstens eine Rilllinie erstreckt, die an ihrem dem Träger abgewandten Ende eine Rillkante aufweist. Dem Träger liegt ein Stanz-Rillkopf gegenüber, auf dem der wenigstens einen Rilllinie gegenüberliegend ein Rillkanal vorgesehen ist. Die Seiteninnenwände des Rillkanals verlaufen nach oben und schräg nach außen und enden jeweils in einer Spitzenkante, wobei die Spitzenkanten jeweils bezüglich der Rilllinie nach außen versetzt parallel zu dieser verlaufen. An der Rilllinie sind den Spitzenkanten gegenüberliegend Druckflächen vorgesehen, die parallel zu den Spitzenkanten verlaufen und bezüglich der Rillkante in Richtung der Trägerplatte versetzt sind. Die Spitzenkanten sind so ausgebildet und angeordnet, dass sie Rillungen in dem Materialbogen ausbilden.The JP 2006-240036A discloses a device for producing bending lines in a sheet of material, in particular in a cardboard sheet, with a carrier, from the top of which extends at least one creasing line, which has a creasing edge at its end facing away from the carrier. The carrier is opposed by a punching-corrugated head, on which the at least one crease line opposite a creasing channel is provided. The side inner walls of the Rillkanals extend upwardly and obliquely outwards and terminate in each case in a tip edge, wherein the tip edges in each case with respect to the score line outwardly offset parallel to this extend. At the creasing line, pressure surfaces, which run parallel to the tip edges and are offset relative to the creasing edge in the direction of the carrier plate, are provided opposite the tip edges. The tip edges are formed and arranged to form grooves in the sheet of material.

Aus der US 3 039 372 A ist es bekannt, auf einer Seite eines Materialbogens zwei Rillnuten durch im Abstand zueinander angeordnete Rilllinien auf einer Seite des Materialbogens durchzuführen, während auf der anderen Seite des Materialbogens eine Rillnut durch eine Rilllinie ausgebildet wird, die zwischen den anderen Rilllinien angeordnet ist. Das Material wird dabei lediglich gequetscht und nicht eingeritzt. Der Materialbogen wird so um die beiden auf einer Seite angeordneten Rilllinien gebogen, dass sich diese innerhalb des fertigen Artikels befinden.From the US Pat. No. 3,039,372 It is known to perform two grooves on one side of a sheet of material by spaced creasing lines on one side of the sheet of material, while on the other side of the sheet of material a creasing groove is formed by a creasing line disposed between the other creasing lines. The material is merely squeezed and not scratched. The material sheet will be around the two Curves arranged on one side are bent to be within the finished article.

Die US 3 717 074 A beschreibt eine ähnliche Technik, wobei jedoch anstatt zwei gegeneinander bewegter Platten, an denen die Rilllinien befestigt sind, Rillvorsprünge an rotierenden Walzen angebracht sind.The US Pat. No. 3,717,074 describes a similar technique, but instead of two mutually moving plates to which the score lines are attached, creasing projections are attached to rotating rollers.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren sowie eine Vorrichtung zur Herstellung von Biegelinien in einem Materialbogen, insbesondere in einem Kartonbogen, zu schaffen, die ein genaues Biegen eines Materialbogens entlang der Biegelinie mit wenig Kraftaufwand ermöglichen.The invention has for its object to provide a method and apparatus for producing bending lines in a sheet of material, especially in a cardboard sheet, which allow accurate bending of a sheet of material along the bending line with little effort.

Diese Aufgabe wird durch ein Verfahren mit den Merkmalen des Patentanspruchs 1 sowie durch eine Vorrichtung mit den Merkmalen des Patentanspruchs 2 gelöst. Vorteilhafte Weiterbildungen der erfindungsgemäßen Vorrichtung sind Gegenstand der Patentansprüche 3 bis 4.This object is achieved by a method having the features of patent claim 1 and by a device having the features of patent claim 2. Advantageous developments of the device according to the invention are the subject of claims 3 to 4.

Mit dem erfindungsgemäßen Verfahren und der erfindungsgemäßen Vorrichtung wird in einer Oberfläche eines Materialbogens eine Rillnut ausgebildet und in der anderen Oberfläche werden zwei Einritzungen außen angrenzend an die Rillnuten vorgesehen. Hierdurch werden die Rückstellkräfte des Kartons nach dem Biegen deutlich reduziert, wodurch der Rillfaktor erhöht wird. Der Rillfaktor ist ein Maß für das Rillverhalten eines gerillten Kartons gegenüber einer ungerillten Probe.With the method according to the invention and the device according to the invention, a groove is formed in one surface of a sheet of material, and in the other surface two grooves are provided on the outside adjacent to the groove grooves. As a result, the restoring forces of the carton are significantly reduced after bending, whereby the creasing factor is increased. The creasing factor is a measure of the creasing behavior of a grooved carton as compared to an unperforated sample.

Von jeder Spitzenkante erstreckt sich bevorzugt eine Außenwand nach unten und schräg nach außen, wobei der Winkel zwischen einer senkrecht zu der Stanz-Rillplatte durch die entsprechende Spitzenkante verlaufenden Ebene und der Seiteninnenwände 0° bis 45 °, bevorzugt ca. 25° beträgt, und der Winkel zwischen dieser Ebene und den Außenwänden 20° bis 75°, bevorzugt ca. 45° beträgt.From each tip edge preferably extends an outer wall downwardly and obliquely outwards, wherein the angle between a perpendicular to the punching-rill plate by the corresponding tip edge extending plane and the side inner walls 0 ° to 45 °, preferably about 25 °, and Angle between this plane and the outer walls 20 ° to 75 °, preferably about 45 °.

Damit beim Einritzen ein Gegendruck gegen die Spitzenkanten erzeugt werden kann, um eine sichere Einritzung zu gewährleisten, sind an der Rilllinie den Spitzenkanten gegenüberliegend Druckflächen vorgesehen, die parallel zu den Spitzenkanten verlaufen und bezüglich der Rillkante in Richtung der Trägerplatte versetzt sind. Diese Druckflächen werden zweckmäßigerweise von der Unterseite von Druckleisten gebildet, die an den Außenseiten der Rilllinie angebracht sind oder eine Einheit mit der Rilllinie bilden.In order to create a counterpressure against the tip edges during scoring, in order to ensure a safe incision, pressure surfaces, which run parallel to the tip edges and with respect to the creasing edge, are provided on the crease line opposite the tip edges are offset in the direction of the support plate. These pressure surfaces are expediently formed from the underside of pressure strips, which are attached to the outer sides of the score line or form a unit with the score line.

Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der beigefügten Figur näher erläutert.An embodiment of the invention will be explained below with reference to the accompanying figure.

In der Figur ist ein Querschnitt durch ein Stanzwerkzeug in einem Bereich gezeigt, in dem eine Rillung in einem Kartonbogen durchgeführt wird.In the figure, a cross section through a punching tool is shown in a region in which a scoring is performed in a cardboard sheet.

Eine Rilllinie 10 ist an der Unterseite einer Trägerplatte (nicht gezeigt) befestigt und weist an ihrem freien Ende eine Rillkante 12 auf. Die Rilllinie 10 ist mittels der Trägerplatte in Richtung einer Stanz-Rillplatte 11 bewegbar, um in einem zwischen der Trägerplatte und der Stanz-Rillplatte 11 eingelegten Kartonbogen 22 eine Rillnut 24 auszubilden.A crease line 10 is fixed to the underside of a support plate (not shown) and has a creasing edge 12 at its free end. The crease line 10 is movable by means of the support plate in the direction of a punching and scoring plate 11 in order to form a scoring groove 24 in a cardboard sheet 22 inserted between the support plate and the punching scoring plate 11.

In der Stanz-Rillplatte 11 ist eine Vertiefung 30 ausgebildet, deren Boden 31 parallel zur Trägerplatte und senkrecht zu der Rilllinie 10 verläuft. Unterhalb der Rilllinie 10 ist auf der Stanz-Rillplatte 11 ein Rillkanal 41 ausgebildet, der seitlich durch zwei im Querschnitt dreieckige, parallel zu der Längsrichtung der Rilllinie 10 verlaufende Vorsprünge 34, 36 begrenzt wird, die von dem Boden 31 der Vertiefung 30 vorstehen. Die zugewandten Seiten der Vorsprünge 34, 36 bilden Seiteninnenwände 40, 43 des Rillkanals 41. Diese Seitenwände 40, 43 verlaufen nach oben schräg nach außen und enden jeweils in einer Spitzenkante 42 bzw. 44, von der jeweils eine Außenwand 38, 39 schräg nach unten bis zu dem Boden 31 der Vertiefung 30 verläuft.In the punching-grooved plate 11, a recess 30 is formed, the bottom 31 is parallel to the support plate and perpendicular to the score line 10. Below the crease line 10, a creasing channel 41 is formed on the punching-grooved plate 11, which is bounded laterally by two triangular cross-section, parallel to the longitudinal direction of the score line 10 extending projections 34, 36 projecting from the bottom 31 of the recess 30. The facing sides of the projections 34, 36 form side inner walls 40, 43 of the Rillkanals 41. These side walls 40, 43 extend upward obliquely outwards and terminate in each case in a tip edge 42 and 44, of which an outer wall 38, 39 obliquely downward extends to the bottom 31 of the recess 30.

Der Winkel β zwischen den Außenwänden 38, 39 und einer durch die Spitzenkanten 42 bzw. 44 senkrecht zur Stanz-Rillplatte 11 verlaufenden Ebene beträgt 20° bis 75°, vorzugsweise ca. 45°. Der Winkel α zwischen den Seiteninnenwänden 40 bzw. 43 und einer durch die Spitzenkanten 42 bzw. 44 senkrecht zu der Stanz-Rillplatte 11 verlaufenden Ebene beträgt 0° bis 45°, vorzugsweise ca. 25°.The angle β between the outer walls 38, 39 and a plane passing through the tip edges 42 and 44 perpendicular to the punching-rill plate 11 is 20 ° to 75 °, preferably about 45 °. The angle α between the side inner walls 40 and 43 and a plane passing through the tip edges 42 and 44, respectively, perpendicular to the punching-scoring plate 11 is 0 ° to 45 °, preferably about 25 °.

An den Außenseiten der Rilllinie 10 sind Druckleisten 14, 16 angebracht, die an ihrer Unterseite parallel zu der Rillkante 12 verlaufende Druckflächen 18, 20 aufweisen, die oberhalb der Spitzenkanten 42 bzw. 44 angeordnet sind. Die Druckflächen 18, 20 sind bezüglich der Rillkante 12 nach oben um einen Betrag versetzt, der geringer ist als die Dicke des Materialbogens 22, vorzugsweise zwischen 0,1 mm und 0,8 mm.On the outer sides of the score line 10 are pressure strips 14, 16 are mounted, which have on its underside parallel to the creasing edge 12 extending pressure surfaces 18, 20, above the Top edges 42 and 44 are arranged. The pressure surfaces 18, 20 are offset relative to the creasing edge 12 upwards by an amount which is less than the thickness of the material sheet 22, preferably between 0.1 mm and 0.8 mm.

Die Spitzenkanten 42, 44 sind bezüglich der Außenseite der Rilllinie 10 um 1,1 mm bis 1,9 mm, vorzugsweise um 1,3 mm versetzt. Die Tiefe des Rillkanals 41 beträgt 0,2 mm bis 0,8 mm, vorzugsweise 0,4 mm.The tip edges 42, 44 are offset with respect to the outside of the score line 10 by 1.1 mm to 1.9 mm, preferably by 1.3 mm. The depth of the groove channel 41 is 0.2 mm to 0.8 mm, preferably 0.4 mm.

Wenn ein Kartonbogen 22 zwischen Trägerplatte und Stanz-Rillplatte 11 des Stanzwerkzeugs geführt wird, wird die Trägerplatte zusammen mit der Rilllinie 10 in Richtung der Stanz-Rillplatte 11 bewegt. Dabei wird das Material des Kartonbogens 22 mittels der Rillkante 12 der Rilllinie 10 in den Rillkanal 41 zwischen den Vorsprüngen 34, 36 gedrückt, wodurch eine Rillnut 24 mit Nutseitenwänden 26, 28 gebildet wird. Die Spitzenkanten 42, 44 der Vorsprünge 34, 36 drücken von unten in das Material des Kartonbogens 22 ein, wobei durch die Druckflächen 18, 20 ein Gegendruck erzeugt wird, so dass der Kartonbogen 22 an der Unterseite eingeritzt wird, wobei der seitliche Abstand zwischen Einritzung und der benachbarten Nutseitenwand 26, 28 dem seitlichen Abstand zwischen der Außenseite der Rilllinie 10 und der betreffenden Spitzenkante 42, 44 entspricht.When a cardboard sheet 22 is guided between the carrier plate and the punching-scoring plate 11 of the punching tool, the carrier plate is moved together with the score line 10 in the direction of the punching-scoring plate 11. In this case, the material of the cardboard sheet 22 is pressed by means of the creasing edge 12 of the score line 10 in the creasing channel 41 between the projections 34, 36, whereby a groove groove 24 with groove side walls 26, 28 is formed. The tip edges 42, 44 of the projections 34, 36 press from below into the material of the cardboard sheet 22, wherein by the pressure surfaces 18, 20 a counter pressure is generated, so that the cardboard sheet 22 is scribed on the underside, wherein the lateral distance between scoring and the adjacent groove side wall 26, 28 corresponds to the lateral distance between the outside of the score line 10 and the respective tip edge 42, 44.

Hierdurch wird eine Negativ-Doppel-Ritz-Rillung in dem Kartonbogen 22 durchgeführt, durch die die Rückstellkräfte des Kartonbogens 22 nach einem Biegen entlang der durch die Rillnut 24 gebildeten Biegelinie deutlich reduziert wird.As a result, a negative double scribe scoring is performed in the cardboard sheet 22, by which the restoring forces of the cardboard sheet 22 is significantly reduced after bending along the bending line formed by the groove groove 24.

Claims (4)

  1. A method for producing bending lines in a sheet of material, especially in a cardboard sheet, wherein creased grooves are formed in one surface of the sheet of material, which are bounded laterally by two groove walls, characterized in that in the other surface of the sheet of material two incisions are formed, which are each arranged laterally outside a groove wall and extend in parallel to the creased groove.
  2. A device for producing bending lines in a sheet of material, especially in a cardboard sheet (22), comprising
    - a carrier plate, wherein at least one creasing rule (10) extends from the bottom side of the carrier plate, which has a creasing edge (12) at its side facing away from the carrier plate, and
    - a stamping creasing plate (11) opposite the carrier plate, wherein a creasing channel (41) is provided thereon opposite the at least one creasing rule (10),
    - wherein the lateral inner walls (43) of the creasing channel (41) extend upwards and obliquely outwards and each of them ends in a tipped edge (42, 44),
    - wherein the tipped edges (42, 44) each extend in parallel to the creasing rule (10) and are offset outwards in relation thereto,
    - wherein pressing surfaces (18, 20) are provided at the creasing rule (10) opposite the tipped edges (42, 44), which extend in parallel to the tipped edges (42, 44) and are offset towards the carrier plate in relation to the creasing edge (24),
    characterized in that the tipped edges (42, 44) are formed and configured for forming incisions in the sheet of material.
  3. A device according to claim 2, characterized in that an outer wall (38, 39) extends downwards and obliquely outwards from each tipped edge (42, 44).
  4. A device according to claim 3, characterized in that the angle (α) between a plane extending through the respective tipped edge (42, 44) perpendicularly to the stamping creasing plate (11) and the lateral inner walls (40, 43) is 0° to 45°, and the angle (β) between said plane and the outer walls (38, 39) is 20° to 75°.
EP10153408.9A 2009-03-13 2010-02-12 Method for manufacturing bending lines in a sheet of material and device for executing the method Not-in-force EP2228207B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009013117A DE102009013117A1 (en) 2009-03-13 2009-03-13 Method for producing bending lines in a material sheet and device for carrying out the method

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Publication Number Publication Date
EP2228207A2 EP2228207A2 (en) 2010-09-15
EP2228207A3 EP2228207A3 (en) 2011-11-30
EP2228207B1 true EP2228207B1 (en) 2014-06-18

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EP10153408.9A Not-in-force EP2228207B1 (en) 2009-03-13 2010-02-12 Method for manufacturing bending lines in a sheet of material and device for executing the method

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DE (1) DE102009013117A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3109040B1 (en) * 2015-06-24 2022-11-02 Cito-System GmbH Anvil and method for forming grooves in paper, cardboard or corrugated cardboard

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806413A (en) 1953-12-31 1957-09-17 Sperry Rand Corp Creasing device
US2949827A (en) * 1958-06-11 1960-08-23 Alton Box Board Co Manufacture of box blanks from box board
US3039372A (en) * 1958-06-12 1962-06-19 Int Paper Box Machine Co Creasing apparatus, method and product
US3717074A (en) * 1967-12-04 1973-02-20 Hoerner Waldorf Corp Deadened crease
DE3606315C1 (en) * 1986-02-27 1987-08-06 Essmann & Schaefer Cutting and scoring tools
DE3831393A1 (en) 1988-09-15 1990-03-22 Wolfgang Prof Dr Ing Grebe Support plate
DE3928916C1 (en) 1989-08-31 1991-01-24 Karl Marbach Gmbh & Co, 7100 Heilbronn, De
AT402482B (en) * 1993-12-21 1997-05-26 Boehler Ybbstalwerke PUNCHING KNIFE FOR PUNCHING TOOLS WITH CURVED CUT
DE29616585U1 (en) * 1996-09-24 1998-01-29 Essmann & Schaefer GmbH & Co. KG, 42369 Wuppertal Cutting and scoring tools
DE29922281U1 (en) * 1999-12-20 2001-04-26 Essmann & Schaefer Cutting and scoring tools
JP2006240036A (en) * 2005-03-03 2006-09-14 San Engineering Kk Scoring device of blank and scoring method using it
DE102007031904B4 (en) * 2006-08-15 2012-01-26 Essmann + Schaefer Gmbh + Co. Kg Cutting and / or scoring tool
DE202007010287U1 (en) * 2007-07-20 2008-12-04 Essmann + Schaefer Gmbh + Co. Kg Cutting and scoring tool

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EP2228207A2 (en) 2010-09-15
EP2228207A3 (en) 2011-11-30
DE102009013117A1 (en) 2010-09-23

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