ES2682847B1 - PROCEDURE AND LOWER DEVICE FOR IMPRESSION SUBSTRATES - Google Patents

PROCEDURE AND LOWER DEVICE FOR IMPRESSION SUBSTRATES Download PDF

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Publication number
ES2682847B1
ES2682847B1 ES201730380A ES201730380A ES2682847B1 ES 2682847 B1 ES2682847 B1 ES 2682847B1 ES 201730380 A ES201730380 A ES 201730380A ES 201730380 A ES201730380 A ES 201730380A ES 2682847 B1 ES2682847 B1 ES 2682847B1
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printing
extensions
substrates
printing substrates
longitudinal end
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ES2682847A1 (en
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Latorre Jesus Francisco Barberan
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Priority to EP18163153.2A priority patent/EP3378639B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
    • 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
    • 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
    • B31F1/10—Creasing by rotary tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • B65H5/062—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers between rollers or balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/36—Article guides or smoothers, e.g. movable in operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/512—Changing form of handled material
    • B65H2301/5121—Bending, buckling, curling, bringing a curvature
    • B65H2301/51212—Bending, buckling, curling, bringing a curvature perpendicularly to the direction of displacement of handled material, e.g. forming a loop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/512—Changing form of handled material
    • B65H2301/5125—Restoring form
    • B65H2301/51256—Removing waviness or curl, smoothing

Description

DESCRIPCIONDESCRIPTION

PROCEDIMIENTO Y DISPOSITIVO DE HENDIDO DE SUSTRATOS DE IMPRESIONPROCEDURE AND LOWER DEVICE FOR IMPRESSION SUBSTRATES

Sector de la tecnicaSector of the technique

La presente invencion esta relacionada con la industria relacionada con la impresion digital sobre sustratos de impresion suministrados substancialmente planos.The present invention relates to the industry related to digital printing on substantially flat supplied printing substrates.

Estado de la tecnicaState of the art

En la actualidad es ampliamente conocido imprimir sobre sustratos de impresion mediante maquinas de impresion digital a fin de proporcionarles un deseado acabado o aspecto exterior. Estos sustratos de impresion presentan dificultades en su impresion por ejemplo cuando se tratan de planchas formadas por dos laminas externas planas y al menos una lamina intermedia ondulada.It is now widely known to print on printing substrates by digital printing machines in order to provide them with a desired finish or exterior appearance. These printing substrates present difficulties in their printing, for example when they are sheets formed by two flat external sheets and at least one intermediate wave sheet.

Dichos sustratos de impresion estan sometidos a tensiones desde el momento de su obtencion debido a la configuracion descrita. Estas tensiones derivan en deformaciones de los sustratos, disponiendose de acuerdo a una disposicion concava sobre una mesa o superficie de sustentacion para su impresion. Esta disposicion concava generalmente se corresponde con un abarquillado longitudinal segun la direccion de avance de los sustratos de impresion, es decir una parte inicial y una parte final se encuentran distanciadas con respecto a la mesa de sustentacion mientras reposan en dicha mesa por una parte central de los mismos.Said impression substrates are subjected to tensions from the moment of their obtaining due to the described configuration. These stresses result in deformations of the substrates, arranged according to a concave arrangement on a table or airfoil for printing. This concave arrangement generally corresponds to a longitudinal curl according to the direction of advance of the printing substrates, that is, an initial part and a final part are spaced apart from the support table while resting on said table by a central part of the substrate. the same.

Estas deformaciones se ven incrementadas cuando a los sustratos de impresion se les aplica una imprimacion base previa para una adecuada aceptacion de gotas de tinta aplicadas al llevarse a cabo la impresion. Estas gotas de tinta son aplicadas mediante tecnologfa “inkjet” sobre la imprimacion base de forma que se obtiene una deseada dimension de cada una de las gotas de tinta sobre el sustrato de impresion.These deformations are increased when a previous base primer is applied to the printing substrates for an adequate acceptance of ink drops applied when printing is carried out. These ink drops are applied by means of inkjet technology on the base primer so that a desired dimension of each of the ink drops is obtained on the printing substrate.

Actualmente, a fin de tratar de mantener los sustratos de impresion de acuerdo a una disposicion plana sobre las mesas de sustentacion para una adecuada aplicacion o inyeccion de las gotas de tinta, es decir una adecuada impresion de dichos sustratos, es conocido aplicar una aspiracion a fin de generar una succion en los sustratos de impresion derivando en un efecto de vado. Sin embargo, la efectividad de esta solucion se ve gravemente limitada por los grados de deformacion que llegan a alcanzar consecuencia de su configuracion y/o la aplicacion de la citada imprimacion base.At present, in order to try to maintain the printing substrates according to a flat arrangement on the support tables for an adequate application or injection of the ink drops, that is to say an adequate impression of said substrates, it is known to apply an aspiration in order to generate a suction on the printing substrates resulting in a ford effect. However, the effectiveness of this solution is severely limited by the degrees of deformation that come to be achieved as a result of its configuration and / or the application of said base primer.

A la vista de las descritas desventajas que presentan las soluciones existentes en la actualidad, resulta evidente que es necesaria una solucion que permita asegurar la correcta disposicion de los sustratos para su impresion de acuerdo a una disposicion plana.In view of the described disadvantages presented by the solutions currently in existence, it is evident that a solution is necessary to ensure the correct arrangement of the substrates for printing according to a flat arrangement.

Objeto de la invencionObject of the invention

Con la finalidad de cumplir este objetivo y solucionar los problemas tecnicos comentados hasta el momento, ademas de aportar ventajas adicionales que se pueden derivar mas adelante, la presente invencion proporciona un procedimiento de hendido de sustratos de impresion y un dispositivo de hendido de sustratos de impresion a fin de asegurar una correcta disposicion de los sustratos de impresion mientras son objeto de la impresion o inyeccion de gotas de tinta. El procedimiento y el dispositivo son especialmente adecuadas para ser empleadas en maquinas de impresion digital.In order to meet this objective and solve the technical problems discussed so far, in addition to providing additional advantages that can be derived further on, the present invention provides a method of slitting printing substrates and a slitting device for printing substrates. in order to ensure a correct arrangement of the printing substrates while they are being printed or injected with ink drops. The procedure and the device are especially suitable for use in digital printing machines.

El procedimiento de hendido de sustratos de impresion comprende las etapas de suministrar un sustrato de impresion; y contactar con un extremo longitudinal del sustratos de impresion por una cara mediante una primera superficie y una segunda superficie anguladas entre sf y por otra cara mediante una primera extension y una segunda extension anguladas entre sf, siendo generado un pliegue en el extremo longitudinal del sustrato de impresion.The slitting process of printing substrates comprises the steps of supplying a printing substrate; and contacting a longitudinal end of the printing substrates on one side by a first surface and a second surface angled together and on the other side by a first extension and a second extension angled together, a fold being generated at the longitudinal end of the substrate of impression.

De manera adicional, segun el procedimiento de hendido de la invencion simultaneamente se contacta con un extremo longitudinal de otro sustrato de impresion por una cara mediante otra primera superficie y otra segunda superficie anguladas entre sf y por otra cara mediante otra primera extension y otra segunda extension anguladas entre sf, siendo generado otro pliegue en el extremo longitudinal del otro sustrato de impresion.Additionally, according to the slitting process of the invention, a longitudinal end of another printing substrate is simultaneously contacted on one side by another first surface and another second surface angled together and on the other side by another first extension and another second extension. angled with each other, another fold being generated at the longitudinal end of the other printing substrate.

El dispositivo de hendido de sustratos de impresion comprende un hendidor que tiene la primera superficie y la segunda superficie anguladas entre sf, estando la primera superficie y la segunda superficie configuradas para contactar con un extremo longitudinal de un sustrato de impresion por una cara; y un contrahendidor que tiene la primera extension y la segunda extension anguladas entre si, estando la primera extension y la segunda extension configuradas para contactar con el extremo longitudinal del sustrato de impresion por otra cara.The printing substrate slitting device comprises a slitter having the first surface and the second surface angled together, the first surface and the second surface being configured to contact a longitudinal end of a one-sided printing substrate; and a contrahendidor that has the first extension and the second extension angled together, the first extension and the second extension being configured to contact the longitudinal end of the printing substrate on the other side.

El hendidor y el contrahendidor estan dispuestos entre si de forma que cuando contactan simultaneamente el extremo longitudinal es generable un pliegue en el sustrato de impresion por accion conjunta del hendidor y el contrahendidor.The splitter and counterweigher are disposed together so that when they contact the longitudinal end simultaneously, a fold on the printing substrate is generated by joint action of the splitter and the counterheader.

Preferentemente, son dos las primeras superficies y dos las segundas superficies que tiene el hendidor, extendiendose las segundas superficies con respecto a las primeras superficies de forma que convergen entre si; y son dos las primeras extensiones y dos las segundas extensiones que tiene el contrahendidor, extendiendose las segundas extensiones con respecto a las primeras extensiones de forma que convergen entre si. De esta forma son dos los pliegues generables por accion conjunta del hendidor y el contrahendidor.Preferably, there are two first surfaces and two second surfaces that have the splitter, the second surfaces extending with respect to the first surfaces so that they converge to each other; and there are two the first extensions and two the second extensions that the contrahendidor has, extending the second extensions with respect to the first extensions so that they converge to each other. In this way there are two generous folds by joint action of the splitter and the counterheader.

El hendidor y el contrahendidor estan dispuestos extendiendose a lo largo de una primera alma y una segunda alma, respectivamente. La primera alma esta configurada para ser accionable de forma que es girada y/o la segunda alma esta configurada para ser accionable de forma que es girada.The splitter and counterweigher are arranged to extend along a first web and a second web, respectively. The first core is configured to be operable so that it is rotated and / or the second core is configured to be operable so that it is rotated.

Las primeras superficies y las segundas superficies estan anguladas entre si de acuerdo con un primer angulo, y las primeras extensiones y las segundas extensiones estan anguladas entre si de acuerdo con un segundo angulo, siendo el primer angulo y el segundo angulo complementarios de forma que conjuntamente suman 360°.The first surfaces and the second surfaces are angled together according to a first angle, and the first extensions and the second extensions are angled together according to a second angle, the first angle and the second angle being complementary so that together add up to 360 °.

Las primeras superficies y las segundas superficies estan unidas por un primer tramo intermedio preferentemente definido por un primer radio de curvatura. Las primeras extensiones y las segundas extensiones estan unidas por un segundo tramo intermedio definido por un segundo radio de curvatura. De esta manera se suaviza la realizacion de los pliegues. Para esto mantener constante el espesor de los sustratos de impresion el primer radio de curvatura es mayor que el segundo radio de curvatura.The first surfaces and the second surfaces are joined by a first intermediate section preferably defined by a first radius of curvature. The first extensions and the second extensions are joined by a second intermediate section defined by a second radius of curvature. In this way the folds are softened. For this purpose, to maintain the thickness of the printing substrates constant, the first radius of curvature is greater than the second radius of curvature.

De esta manera, la invencion proporciona los sustratos de impresion de forma que pueden recibir una succion que los disponga de acuerdo a una disposicion plana en toda su extension. In this way, the invention provides printing substrates so that they can receive a suction that arranges them according to a flat arrangement in its entirety.

Descripcion de las figurasDescription of the figures

La figura 1 muestra una vista esquematica de unos sustratos de impresion dispuestos segun el estado de la tecnica.Figure 1 shows a schematic view of printing substrates arranged according to the state of the art.

La figura 2 muestra una vista esquematica de los sustratos de impresion dispuestos segun la presente invencion.Figure 2 shows a schematic view of the printing substrates disposed according to the present invention.

La figura 3 muestra una vista en perspectiva de un dispositivo de hendido de sustratos de impresion objeto de la presente invencion.Figure 3 shows a perspective view of a slitting device of printing substrates object of the present invention.

La figura 4 muestra otra vista en perspectiva del dispositivo de hendido de sustratos de impresion objeto de la presente invencion.Figure 4 shows another perspective view of the slitting device of printing substrates object of the present invention.

La figura 5 muestra una vista frontal del dispositivo de hendido de sustratos de impresion objeto de la presente invencion.Figure 5 shows a front view of the cleaving device of printing substrates object of the present invention.

La figura 6 muestra una vista esquematica parcial del dispositivo de hendido de sustratos de impresion objeto de la presente invencion.Figure 6 shows a partial schematic view of the slitting device of printing substrates object of the present invention.

La figura 7 muestra otra vista esquematica parcial del dispositivo de hendido de sustratos de impresion objeto de la presente invencion.Figure 7 shows another partial schematic view of the slitting device of printing substrates object of the present invention.

Descripcion detallada de la invencionDetailed description of the invention

La invencion se refiere a un procedimiento y a un dispositivo de hendido de sustratos de impresion (1). El procedimiento y el dispositivo son especialmente adecuados para ser empleadas en maquinas de impresion digital con cabezales. De acuerdo con esto, la invencion permite una adecuada aspiracion o succion en los sustratos de impresion (1) para asegurar la correcta disposicion de dichos sustratos (1) para su impresion de acuerdo a una disposicion plana. La impresion digital esta dirigida a los sustratos de impresion (1) que se tratan de planchas, preferentemente de carton, formadas por dos laminas externas planas y al menos una lamina intermedia ondulada.The invention relates to a method and a slitting device for printing substrates (1). The procedure and the device are especially suitable for use in digital printing machines with heads. Accordingly, the invention allows a suitable suction or suction on the printing substrates (1) to ensure the correct arrangement of said substrates (1) for printing according to a flat arrangement. The digital printing is directed to the printing substrates (1) which are plates, preferably cardboard, formed by two flat external sheets and at least one intermediate sheet corrugated.

Los sustratos de impresion (1) son desplazados por una mesa de sustentacion (2) hacia una zona de impresion definida por la localizacion de los cabezales de la maquina de impresion digital. En las figuras 1 y 2 mediante flechas horizontales se representa la direccion y sentido de desplazamiento de los sustratos de impresion (1) por la mesa de sustentacion (2), mientras que mediante flechas verticales se representa la direccion y sentido del aire succionado mediante un conjunto de aspiracion a fin de disponer los sustratos de impresion (1) en contacto con la mesa de sustentacion (2) durante su desplazamiento e impresion.The printing substrates (1) are displaced by a support table (2) towards a printing area defined by the location of the heads of the digital printing machine. In figures 1 and 2 through horizontal arrows the direction and direction of displacement of the printing substrates (1) by the support table (2) is represented, while vertical arrows represent the direction and direction of the air sucked by a suction assembly in order to arrange the printing substrates (1) in contact with the support table (2) during its movement and printing.

Tal y como es apreciable en la figura 1, es conocido que los sustratos de impresion (1), representados mediante lfneas discontinuas, en algunas ocasiones se encuentran dispuestos sobre la mesa de sustentacion (2) de acuerdo a una disposicion concava con una parte inicial y una parte final de estos (1), segun su direccion y sentido de desplazamiento, distanciadas con respecto a la mesa de sustentacion (2) mientras reposan por una parte central. De esta manera no se obtiene un eficiente efecto de succion y ademas los sustratos de impresion (1) no se disponen completamente planos para su impresion, lo cual deriva en una calidad de impresion indeseada y/o en limitaciones en la seleccion de areas de impresion en los sustratos de impresion (1), ademas de suponer un riesgo para la maquina de impresion.As it is evident in figure 1, it is known that the printing substrates (1), represented by discontinuous lines, are sometimes arranged on the support table (2) according to a concave arrangement with an initial part and a final part of these (1), according to its direction and direction of displacement, spaced with respect to the support table (2) while resting on a central part. In this way, an efficient suction effect is not obtained and also the printing substrates (1) are not completely flat for printing, which results in undesired print quality and / or limitations in the selection of printing areas. in the printing substrates (1), besides posing a risk for the printing machine.

En la figura 2 es apreciable la disposicion de los sustratos de impresion (1), representados mediante lfneas discontinuas, sobre la mesa de sustentacion (2) como resultado de la invencion. Los sustratos de impresion (1) obtenidos incluyen unos pliegues (3), segun la direccion de avance de los sustratos de impresion (1), uno en un extremo longitudinal y otro en otro extremo longitudinal, es decir uno en la parte inicial y otro en la parte final. Dichos pliegues (3), concretamente dos por cada uno de los sustratos de impresion (1), posibilitan ejercer un eficiente efecto de succion, conllevando una disposicion completamente plana de forma que se maximiza un area de contacto entre los sustratos de impresion (1) y la mesa de sustentacion (2). Adicionalmente, el hecho de evitar parte de los sustratos de impresion (1) elevados o distanciados con respecto a la mesa de sustentacion (2) evita posibles indeseados contactos entre los sustratos de impresion (1) y elementos o partes de la maquina de impresion digital, como por ejemplo los cabezales, susceptibles de resultar danados como consecuencia de dichos contactos.In FIG. 2, the arrangement of the printing substrates (1), represented by discontinuous lines, on the support table (2) as a result of the invention is appreciable. The printing substrates (1) obtained include folds (3), according to the direction of advance of the printing substrates (1), one at one longitudinal end and the other at another longitudinal end, ie one in the initial part and another in the final part. Said folds (3), specifically two for each of the printing substrates (1), make it possible to exert an efficient suction effect, entailing a completely flat arrangement so that a contact area between the printing substrates is maximized (1) and the support table (2). Additionally, the fact of avoiding part of the printing substrates (1) raised or distanced with respect to the support table (2) avoids possible undesired contacts between the printing substrates (1) and elements or parts of the digital printing machine , such as heads, which may be damaged as a result of said contacts.

El procedimiento comprende el suministro de los sustratos de impresion (1) de manera seguida o consecutiva al dispositivo de hendido de sustratos de impresion (1). Los sustratos de impresion (1) suministrados son contactados en uno de los extremos longitudinales por una cara mediante una primera superficie (4) y una segunda superficie (5) anguladas entre si. Asimismo, dicho extremo longitudinal del sustrato de impresion (1) es tambien contactado por otra cara mediante una primera extension (6) y una segunda extension (7) anguladas entre si.The method comprises the supply of the printing substrates (1) consecutively or consecutively to the creasing device of printing substrates (1). The printing substrates (1) supplied are contacted at one of the longitudinal ends by a face by means of a first surface (4) and a second surface (5) angled together. Likewise, said longitudinal end of the printing substrate (1) is also contacted on the other side by means of a first extension (6) and a second extension (7) angled together.

De esta manera se establece contacto con las dos laminas externas desde una parte externa de los sustratos de impresion (1). La primera superficie (4) y la segunda superficie (5) estan dispuestas con respecto a la primera extension (6) y la segunda extension (7) de forma que cuando todas ellas (4, 5, 6, 7) establecen el contacto con el sustrato de impresion (1) se genera el pliegue (3) en el correspondiente extremo longitudinal.In this way contact is made with the two external sheets from an external part of the printing substrates (1). The first surface (4) and the second surface (5) are arranged with respect to the first extension (6) and the second extension (7) so that when all of them (4, 5, 6, 7) establish contact with the printing substrate (1) generates the fold (3) at the corresponding longitudinal end.

El dispositivo de hendido de sustratos de impresion (1) comprende un hendidor (8) que incluye la primera superficie (4) y la segunda superficie (5), y un contrahendidor (9) que incluye la primera extension (6) y la segunda extension (7). Adicionalmente, el dispositivo de hendido de sustratos de impresion (1) comprende unos soportes laterales (10), una primera alma (11), una segunda alma (12), un eje tractor (13) y unos medios de transmision de giro (14), tales como una cadena o cinta.The slitting device of printing substrates (1) comprises a slitter (8) that includes the first surface (4) and the second surface (5), and a counterheader (9) that includes the first extension (6) and the second one. extension (7). Additionally, the printing substrate slitting device (1) comprises side supports (10), a first web (11), a second web (12), a tractor shaft (13) and a rotary transmission means (14). ), such as a chain or ribbon.

Los soportes laterales (10) estan dispuestos unidos mediante la primera alma (11) y la segunda alma (12). El eje tractor (13) mediante los medios de transmision de giro (14) trasmite un giro preferentemente a la primera alma (11), y mas preferentemente a la primera alma (11) y a la segunda alma (12). El dispositivo de hendido de sustratos de impresion (1) esta configurado para ser sincronizable tanto con un alimentador o suministrador de los sustratos de impresion (1) como con la mesa de sustentacion (2), y mas concretamente con la velocidad de desplazamiento que ejerce en los sustratos de impresion (1).The lateral supports (10) are arranged joined by the first web (11) and the second web (12). The drive shaft (13) by means of the transmission transmission means (14) transmits a rotation preferably to the first web (11), and more preferably to the first web (11) and the second web (12). The slitting device of printing substrates (1) is configured to be synchronizable both with a feeder or supplier of the printing substrates (1) and with the support table (2), and more specifically with the speed of movement that exerts. on the printing substrates (1).

El hendidor (8) se extiende por la primera alma (11) de forma que cubre el ancho de la mesa de sustentacion (2), o al menos de los sustratos de impresion (1), de forma que mediante la primera superficie (4) y la segunda superficie (5) se recorre el ancho total de los sustratos de impresion (1) de acuerdo a su direccion de avance o desplazamiento. El contrahendidor (9), por su parte, se extiende por la segunda alma (12) de forma que cubre el ancho de la mesa de sustentacion (2), o al menos de los sustratos de impresion (1), de forma que mediante la primera extension (6) y la segunda extension (7) se recorre el ancho total de los sustratos de impresion (1) de acuerdo a su direccion de avance o desplazamiento. The slitter (8) extends over the first web (11) in such a way that it covers the width of the support table (2), or at least of the printing substrates (1), so that by means of the first surface (4). ) and the second surface (5) the total width of the printing substrates (1) is traversed according to its direction of advancement or displacement. The contrahendidor (9), on the other hand, extends through the second core (12) so that it covers the width of the support table (2), or at least of the printing substrates (1), so that the first extension (6) and the second extension (7) travel the total width of the printing substrates (1) according to their direction of advancement or displacement.

El dispositivo de hendido de sustratos de impresion esta configurado para ser dispuesto de forma que los sustratos de impresion (1) alimentados por el alimentador pasan a traves de la primera alma (11) y la segunda alma (12), y por tanto entre el hendidor (8) y el contrahendidor (9), antes de ser dispuestos sobre la mesa de sustentacion (2). Esto es claramente apreciable en las figuras 3 a 5, en las cuales se representa una porcion de un sustrato de impresion (1).The creasing device of impression substrates is configured to be arranged so that the printing substrates (1) fed by the feeder pass through the first web (11) and the second web (12), and therefore between the creel (8) and the contrahendidor (9), before being placed on the support table (2). This is clearly noticeable in Figures 3 to 5, in which a portion of a printing substrate (1) is represented.

De acuerdo con esto, cuando los sustratos de impresion (1) son suministrados entre el hendidor (8) y el contrahendidor (9), al menos la primera alma (11) es accionada para su giro de forma que la primera superficie (4) y la segunda superficie (5) contactan por una de las caras con el extremo longitudinal del correspondiente sustrato de impresion (1). Como consecuencia, la primera extension (6) y la segunda extension (7) contactan por la otra de las caras con dicho extremo longitudinal. Asf se genera el pliegue (3) recorriendo transversalmente el sustrato de impresion (1) en correspondencia con el extremo longitudinal sobre el que se ha establecido el contacto mediante el hendidor (8) y el contrahendidor (9).Accordingly, when the printing substrates (1) are supplied between the creaser (8) and the counterheater (9), at least the first core (11) is driven to rotate so that the first surface (4) and the second surface (5) contact one of the faces with the longitudinal end of the corresponding printing substrate (1). As a consequence, the first extension (6) and the second extension (7) contact the other side with said longitudinal end. Thus, the fold (3) is generated by transversely crossing the printing substrate (1) in correspondence with the longitudinal end on which the contact is established by the creaser (8) and the counterheader (9).

Preferentemente, son dos las primeras superficies (4) y dos las segundas superficies (5) que tiene el hendidor (8), tal y como es apreciable en la figura 7. Asimismo, son dos las primeras extensiones (6) y dos las segundas extensiones (7) que tiene el contrahendidor (9). De acuerdo con esto, cada una de las segundas superficies (5) se extiende con respecto a una de las primeras superficies (4) de forma que ambas segundas superficies (5) convergen entre si. Igualmente, cada una de las segundas extensiones (7) se extiende con respecto a una de las primeras extensiones (6) de forma que ambas segundas extensiones (7) convergen entre si.Preferably, there are two first surfaces (4) and two second surfaces (5) that have the splitter (8), as it is appreciable in figure 7. Also, there are two the first extensions (6) and two the second ones. extensions (7) that the contrahendidor has (9). Accordingly, each of the second surfaces (5) extends with respect to one of the first surfaces (4) so that both second surfaces (5) converge with each other. Likewise, each of the second extensions (7) extends with respect to one of the first extensions (6) so that both second extensions (7) converge with each other.

De esta manera se posibilita que los pliegues (3) se generen de dos en dos, uno en la parte final de uno de los sustratos de impresion (1) suministrados y otro en la parte inicial de otro de los sustratos de impresion (1) suministrado justo a continuacion, es decir de manera simultanea uno en correspondencia con el extremo longitudinal de uno de los sustratos de impresion (1) y otro en correspondencia con el extremo longitudinal de otro de los sustratos de impresion (1).In this way it is possible that the folds (3) are generated in pairs, one in the final part of one of the printed substrates (1) and another in the initial part of another of the printing substrates (1) supplied just below, that is to say simultaneously one in correspondence with the longitudinal end of one of the printing substrates (1) and another one in correspondence with the longitudinal end of another of the printing substrates (1).

El hendidor (8) y el contrahendidor (9) estan dispuestos separados entre si de acuerdo a una distancia de separacion que respeta el espesor de los sustratos de impresion (1), es decir la distancia de separacion esta definida de forma que en la realizacion de los pliegues (3) el espesor es mantenido constante.The creaser (8) and the contrahendidor (9) are arranged spaced apart from each other according to a separation distance that respects the thickness of the printing substrates (1), is saying the distance of separation is defined so that in the embodiment of the folds (3) the thickness is kept constant.

Con este mismo objeto, las angulaciones entre las primeras superficies (4) y las segundas superficies (5), asf como entre las primeras extensiones (6) y las segundas extensiones (7), estan definidas de forma que mediante la posterior succion en la mesa de sustentacion (2) los sustratos de impresion (1) puedan recuperar su disposicion plana, es decir deshacer los pliegues (3). Dichas angulaciones, por tanto, no deforman ni rompen la estructura ondulada de la al menos una lamina intermedia ondulada.With this same object, the angulations between the first surfaces (4) and the second surfaces (5), as well as between the first extensions (6) and the second extensions (7), are defined so that by means of the subsequent suction in the support table (2) the printing substrates (1) can recover their flat arrangement, ie undo the folds (3). Said angulations, therefore, do not deform or break the corrugated structure of the at least one corrugated intermediate sheet.

Las primeras superficies (4) y las segundas superficies (5) estan anguladas entre si de acuerdo con un primer angulo, y las primeras extensiones (6) y las segundas extensiones (7) estan anguladas entre si de acuerdo con un segundo angulo. Preferentemente, a fin de facilitar que el espesor de los sustratos de impresion (1) resulte inalterado con los pliegues (3), el primer angulo y el segundo angulo son complementarios. El primer angulo da lugar a una concavidad, mientras que el segundo angulo a una convexidad.The first surfaces (4) and the second surfaces (5) are angled together according to a first angle, and the first extensions (6) and the second extensions (7) are angled together according to a second angle. Preferably, in order to make it easier for the thickness of the printing substrates (1) to be unaltered with the folds (3), the first angle and the second angle are complementary. The first angle gives rise to a concavity, while the second angle to a convexity.

El primer angulo y el segundo angulo son seleccionados de forma que los pliegues (3) generados suponen un refuerzo estructural en los sustratos de impresion (1), ademas de permitir una succion tambien en los extremos longitudinales en la mesa de sustentacion (2), es decir no solo en la parte central de los mismos, siendo el pliegue (3) desarmable de forma que los sustratos de impresion (1) recuperan su configuracion o disposicion totalmente plana, sin pliegues (3), para su adecuado desplazamiento e impresion. De esta forma, el primer angulo por la parte a ser dispuesta enfrentada al contrahendidor (9) es de entre 120° y 150°, y el segundo angulo por la parte a ser dispuesta enfrentada al hendidor (8) es de entre 240° y 210°, de forma que conjuntamente suman 360°.The first angle and the second angle are selected so that the generated folds (3) suppose a structural reinforcement in the printing substrates (1), besides allowing a suction also in the longitudinal ends in the support table (2), that is, not only in the central part thereof, the fold (3) being removable so that the printing substrates (1) recover their configuration or arrangement completely flat, without folds (3), for proper movement and printing. In this way, the first angle for the part to be arranged facing the counterheader (9) is between 120 ° and 150 °, and the second angle for the part to be disposed facing the splitter (8) is between 240 ° and 210 °, so that together they add up to 360 °.

Con el objeto se minimizar el esfuerzo transmitido a los sustratos de impresion (1) a la hora de realizar los pliegues (3), las primeras superficies (4) y las segundas superficies (5) estan unidas por un primer tramo intermedio (15) definido de acuerdo con un primer radio de curvatura. Asimismo, las primeras extensiones (6) y las segundas extensiones (7) estan unidas por un segundo tramo intermedio (16) definido de acuerdo con un segundo radio de curvatura. A fin de optimizar los pliegues (3), el primer radio de curvatura es mayor que el segundo radio de curvatura. With the purpose of minimizing the effort transmitted to the printing substrates (1) when making the folds (3), the first surfaces (4) and the second surfaces (5) are joined by a first intermediate section (15) defined according to a first radius of curvature. Also, the first extensions (6) and the second extensions (7) are joined by a second intermediate section (16) defined according to a second radius of curvature. In order to optimize the folds (3), the first radius of curvature is greater than the second radius of curvature.

Adicionalmente, el dispositivo de hendido de sustratos de impresion esta configurado de forma que los pliegues (3) se forman a menos de 5 milfmetros del borde del extremo longitudinal correspondiente, y mas preferentemente a menos de 4 milfmetros. De esta forma, se minimizan las posibilidades de recibir la impresion digital en las partes que reciben los pliegues (3). Esto mejora la calidad total de la impresion digital, ademas de condicionarla en la menor medida posible. Additionally, the creasing device of printing substrates is configured such that the creases (3) are formed less than 5 millimeters from the edge of the corresponding longitudinal end, and more preferably less than 4 millimeters. In this way, the possibilities of receiving digital printing in the parts receiving the folds (3) are minimized. This improves the overall quality of digital printing, in addition to conditioning it as little as possible.

Claims (10)

REIVINDICACIONES 1. - Procedimiento de hendido de sustratos de impresion (1), caracterizado por que comprende las etapas de:1. - Clearing process of printing substrates (1), characterized in that it comprises the steps of: - suministrar un sustrato de impresion (1);- supplying a printing substrate (1); - contactar con un extremo longitudinal del sustrato de impresion (1) por una cara mediante una primera superficie (4) y una segunda superficie (5) de un hendidor (8) anguladas entre si y por otra cara del extremo longitudinal del sustrato de impresion (1) mediante una primera extension (6) y una segunda extension (7) de un contrahendidor (9) anguladas entre si, siendo generado un pliegue (3) en el extremo longitudinal del sustrato de impresion (1) por accion conjunta del hendidor (8) y el contrahendidor (9).- contacting a longitudinal end of the printing substrate (1) on one side by a first surface (4) and a second surface (5) of a slitter (8) angled together and on the other side of the longitudinal end of the printing substrate (1) by means of a first extension (6) and a second extension (7) of a counterheader (9) angled together, a fold (3) being generated at the longitudinal end of the printing substrate (1) by joint action of the slitter (8) and the contrahendidor (9). 2. - Procedimiento de hendido de sustratos de impresion (1) segun la reivindicacion 1, caracterizado por que simultaneamente se contacta con un extremo longitudinal de otro sustrato de impresion (1) por una cara mediante otra primera superficie (4) y otra segunda superficie (5) del hendidor (8) anguladas entre si y por otra cara del extremo longitudinal del otro sustrato de impresion (1) mediante otra primera extension (6) y otra segunda extension (7) del contrahendidor (9) anguladas entre si, siendo generado otro pliegue (3) en el extremo longitudinal del otro sustrato de impresion (1) por accion conjunta del hendidor (8) y el contrahendidor (9).2. - Clearing process of printing substrates (1) according to claim 1, characterized in that simultaneously one longitudinal end of another printing substrate (1) is contacted on one side by another first surface (4) and another second surface (5) of the splitter (8) angled together and on the other side of the longitudinal end of the other printing substrate (1) by another first extension (6) and another second extension (7) of the counterheader (9) angled together, being another crease (3) is generated at the longitudinal end of the other printing substrate (1) by joint action of the creaser (8) and counterheader (9). 3. - Dispositivo de hendido de sustratos de impresion (1), caracterizado por que comprende: - un hendidor (8) que tiene:3. - Slitting device of printing substrates (1), characterized in that it comprises: - a slitter (8) that has: o una primera superficie (4) y una segunda superficie (5) anguladas entre si, estando la primera superficie (4) y la segunda superficie (5) configuradas para contactar con un extremo longitudinal de un sustrato de impresion (1) por una cara; or a first surface (4) and a second surface (5) angled together, the first surface (4) and the second surface (5) being configured to contact a longitudinal end of a printing substrate (1) on one side ; - un contrahendidor (9) que tiene:- a contrahendidor (9) that has: o una primera extension (6) y una segunda extension (7) anguladas entre si, estando la primera extension (6) y la segunda extension (7) configuradas para contactar con el extremo longitudinal del sustrato de impresion (1) por otra cara; tal que el hendidor (8) y el contrahendidor (9) estan dispuestos entre si de forma que cuando contactan simultaneamente el extremo longitudinal es generable un pliegue (3) en el sustrato de impresion (1) por accion conjunta del hendidor (8) y el contrahendidor (9). or a first extension (6) and a second extension (7) angled together, the first extension (6) and the second extension (7) being configured to contact the longitudinal end of the printing substrate (1) on the other side; such that the slitter (8) and the counterheader (9) are arranged so that when they simultaneously contact the longitudinal end a fold (3) is generated on the printing substrate (1) by joint action of the slitter (8) and the contrahendidor (9). 4. - Dispositivo de hendido de sustratos de impresion segun la reivindicacion 3, caracterizado por que son dos las primeras superficies (4) y las segundas superficies (5) que tiene el hendidor (8), extendiendose las segundas superficies (5) con respecto a las primeras superficies (4) de forma que convergen entre si; y son dos las primeras extensiones (6) y las segundas extensiones (7) que tiene el contrahendidor (9), extendiendose las segundas extensiones (7) con respecto a las primeras extensiones (6) de forma que convergen entre si; tal que son dos los pliegues (3) generables por accion conjunta del hendidor (8) y el contrahendidor (9).4. - Clearing device of printing substrates according to claim 3, characterized in that there are two first surfaces (4) and second surfaces (5) having the splitter (8), the second surfaces (5) extending with respect to to the first surfaces (4) so that they converge to each other; and there are two first extensions (6) and the second extensions (7) that the contrahendidor (9) has, the second extensions (7) extending with respect to the first extensions (6) so that they converge to each other; such that two folds (3) are generated by joint action of the splitter (8) and the counterheader (9). 5. - Dispositivo de hendido de sustratos de impresion segun la reivindicacion 3 o 4, caracterizado por que el hendidor (8) y el contrahendidor (9) estan dispuestos extendidos a lo largo de una primera alma (11) y una segunda alma (12), respectivamente.5. - Clearing device for printing substrates according to claim 3 or 4, characterized in that the creaser (8) and counterweig (9) are arranged extended along a first core (11) and a second core (12). ), respectively. 6. - Dispositivo de hendido de sustratos de impresion segun la reivindicacion 5, caracterizado por que la primera alma (11) esta configurada para ser accionable de forma que es girada.6. - Clearing device of printing substrates according to claim 5, characterized in that the first web (11) is configured to be operable so that it is rotated. 7. - Dispositivo de hendido de sustratos de impresion segun la reivindicacion 6, caracterizado por que la segunda alma (12) esta configurada para ser accionable de forma que es girada.7. - Clearing device printing substrates according to claim 6, characterized in that the second core (12) is configured to be operable so that it is rotated. 8. - Dispositivo de hendido de sustratos de impresion segun una cualquiera de las reivindicaciones anteriores, caracterizado por que las primeras superficies (4) y las segundas superficies (5) estan anguladas entre si de acuerdo con un primer angulo y las primeras extensiones (6) y las segundas extensiones (7) estan anguladas entre si de acuerdo con un segundo angulo, siendo el primer angulo y el segundo angulo complementarios de forma que conjuntamente suman 360°.8. - Slitting device printing substrates according to any one of the preceding claims, characterized in that the first surfaces (4) and the second surfaces (5) are angled together according to a first angle and the first extensions (6). ) and the second extensions (7) are angled together according to a second angle, the first angle and the second angle being complementary so that together they add up to 360 °. 9. - Dispositivo de hendido de sustratos de impresion segun una cualquiera de las reivindicaciones anteriores, caracterizado por que las primeras superficies (4) y las segundas superficies (5) estan unidas por un primer tramo intermedio (15) definido por un primer radio de curvatura.9. - Clearing device of printing substrates according to any one of the preceding claims, characterized in that the first surfaces (4) and the second surfaces (5) are joined by a first intermediate section (15) defined by a first radius of curvature. 10. - Dispositivo de hendido de sustratos de impresion segun una cualquiera de las reivindicaciones anteriores, caracterizado por que las primeras extensiones (6) y las segundas extensiones (7) estan unidas por un segundo tramo intermedio (16) definido por un segundo radio de curvatura. 10. - Clearing device printing substrates according to any one of the preceding claims, characterized in that the first extensions (6) and the second extensions (7) are joined by a second intermediate section (16) defined by a second radius of curvature.
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JP4070861B2 (en) * 1998-01-21 2008-04-02 武藤工業株式会社 Inkjet printer
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GB2429189B (en) * 2005-08-20 2007-10-24 Tech Ni Fold Ltd Drum for a creasing device
JP2009292572A (en) * 2008-06-04 2009-12-17 Seiko Epson Corp Inkjet printer
JP2010149975A (en) * 2008-12-24 2010-07-08 Seiko Epson Corp Skew correcting device and recorder
GB2475715B (en) * 2009-11-27 2014-04-16 Tech Ni Fold Ltd Creasing and cutting tools
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