ES2239860A1 - Mandril for shaper machine of cardboard box, has motherboard fixed on sector of cardboard plate corresponding to bottom of box, piston penetrating into cardboard plate, and recesses extended to interior side of terminal sector of fins - Google Patents

Mandril for shaper machine of cardboard box, has motherboard fixed on sector of cardboard plate corresponding to bottom of box, piston penetrating into cardboard plate, and recesses extended to interior side of terminal sector of fins

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Publication number
ES2239860A1
ES2239860A1 ES200200779A ES200200779A ES2239860A1 ES 2239860 A1 ES2239860 A1 ES 2239860A1 ES 200200779 A ES200200779 A ES 200200779A ES 200200779 A ES200200779 A ES 200200779A ES 2239860 A1 ES2239860 A1 ES 2239860A1
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Spain
Prior art keywords
box
sector
cardboard
mandrel
legs
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Granted
Application number
ES200200779A
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Spanish (es)
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ES2239860B1 (en
Inventor
Joaquin Monerris Penalva
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smurfit Kappa Iberoamericana SA
Original Assignee
Kappa Iberoamericana SA
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Application filed by Kappa Iberoamericana SA filed Critical Kappa Iberoamericana SA
Priority to ES200200779A priority Critical patent/ES2239860B1/en
Publication of ES2239860A1 publication Critical patent/ES2239860A1/en
Application granted granted Critical
Publication of ES2239860B1 publication Critical patent/ES2239860B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26Folding sheets, blanks or webs
    • B31B50/44Folding sheets, blanks or webs by plungers moving through folding dies
    • B31B1/44
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00Construction of rigid or semi-rigid containers
    • B31B2120/40Construction of rigid or semi-rigid containers lined or internally reinforced
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26Folding sheets, blanks or webs
    • B31B7/26
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00Construction of rigid or semi-rigid containers
    • B31B2120/502Construction of rigid or semi-rigid containers having integral corner posts or reinforcements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74Auxiliary operations
    • B31B50/81Forming or attaching accessories, e.g. opening devices, closures or tear strings

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  • Making Paper Articles (AREA)

Abstract

The mandril has a motherboard fixed on a sector of a cardboard plate corresponding to bottom of a box. A piston penetrates into the cardboard plate. Recesses are extended to an interior side of a terminal sector of fins.

Description

Mandril para máquinas conformadoras de cajas de cartón.Chuck for box forming machines paperboard.

Objeto de la invenciónObject of the invention

La presente invención se refiere a un mandril, del tipo de los utilizados a modo de pistón en máquinas conformadoras de cajas de cartón, de manera que apoyando sobre el sector de la placa de cartón correspondiente al fondo de la caja, provoca el abatimiento de sus gualderas y testeros.The present invention relates to a mandrel, of the type used as a piston in machines cardboard box shapers, so that resting on the sector of the cardboard plate corresponding to the bottom of the box, It causes the dejection of its gates and testeros.

El objeto de la invención es conseguir un mandril que, tras esta primera fase de conformación de la caja, permita efectuar determinadas manipulaciones sobre las aletas de armado de la caja, manteniendo su posición en el seno de esta última y, consecuentemente, en óptimas condiciones de fijación para la misma.The object of the invention is to achieve a mandrel that, after this first phase of forming the box, allow carry out certain manipulations on the arming fins of the box, maintaining its position within the latter and, consequently, in optimal fixing conditions for the same.

Antecedentes de la invenciónBackground of the invention

Un mandril clásico para máquinas conformadoras de cajas de cartón está estructurado a partir de una placa base inferior, rectangular, rígida, generalmente metálica, dimensionalmente coincidente con el fondo de la caja de cartón a obtener, colaborando con esta placa base otra, convenientemente separada de la primera mediante distanciadores que las unen rígidamente entre sí, y siendo la placa superior la que recibe el accionamiento del correspondiente pistón.A classic mandrel for forming machines Cardboard boxes are structured from a motherboard bottom, rectangular, rigid, usually metallic, dimensionally coinciding with the bottom of the cardboard box a get, collaborating with this motherboard another, conveniently separated from the first by means of spacers that join them rigidly with each other, and the top plate being the one that receives the corresponding piston drive.

Este tipo de mandril, perfectamente válido para conseguir arrastrar la placa de cartón debidamente troquelada hacia el interior de la cámara de conformación de la máquina y consecuentemente para conseguir el abatimiento a 90° de gualderas y testeros, impide cualquier otro tipo de maniobra posterior en el interior de la caja, como por ejemplo la de abatimiento de aletas de armado y/o rigidización, por lo que debe procederse previamente a estas maniobras de armado a la extracción del mandril, dejando la caja semiconformada vacía y sin una fijación interior que seria deseable en determinadas maniobras posteriores de armado.This type of mandrel, perfectly valid for get to drag the cardboard plate properly stamped towards the inside of the machine shaping chamber and consequently to achieve the 90 ° slanting of gualderas and testeros, prevents any other type of subsequent maneuver in the inside the box, such as the flip-flop of assembly and / or stiffening, so it must be previously to these maneuvers of armed to the extraction of the mandrel, leaving the empty semiconformed box without an internal fixation that would be desirable in certain subsequent assembly maneuvers.

Otro problema inherente a este tipo de mandriles es su rigidez dimensional, de manera que cada mandril tan solo es válido para una caja de determinadas dimensiones, lo que obliga a disponer de una amplia gama de mandriles, tantos como tamaños de cajas pueda conformar la máquina.Another problem inherent in this type of mandrels is its dimensional stiffness, so that each mandrel is only valid for a box of certain dimensions, which requires have a wide range of mandrels, as many as sizes of boxes can shape the machine.

Descripción de la invenciónDescription of the invention

El mandril para máquinas conformadoras para cajas de cartón que la invención propone resuelve de forma plenamente satisfactoria la problemática anteriormente expuesta en los dos aspectos comentados, permitiendo la realización de manipulaciones en el interior de la caja sin que dicho mandril sea retirado de la misma, en óptimas condiciones de fijación para esta última, y permitiendo además regular sus dimensiones efectivas, dentro de ciertos límites, para adecuarlas a distintos tamaños de caja.The mandrel for box forming machines of cardboard that the invention proposes fully resolves satisfactory the problem previously exposed in both commented aspects, allowing the realization of manipulations inside the box without said mandrel being removed from the same, in optimal fixing conditions for the latter, and also allowing to regulate its effective dimensions, within certain limits, to adapt them to different box sizes.

Para ello, de forma más concreta y a partir también de la participación en el mismo de una placa base, rígida, destinada a incidir sobre el sector de la placa de cartón correspondiente al fondo de la misma, dicha placa presenta amplias escotaduras en correspondencia con sus vértices, en forma de cuadrante circular, dimensionalmente adecuadas para permitir la basculación de las aletas de la caja que van a dar lugar a los clásicos refuerzos prismático-triangulares establecidos en correspondencia con sus esquinas.To do this, more specifically and from also of the participation in it of a rigid, motherboard, intended to influence the cardboard plate sector corresponding to the bottom thereof, said plate has wide recesses in correspondence with its vertices, in the form of circular quadrant, dimensionally suitable to allow tilting of the fins of the box that will give rise to classic prismatic-triangular reinforcements established in correspondence with its corners.

Para compensar estas amplias escotaduras de los vértices de la placa base, el mandril incorpora en correspondencia con tales vértices a modo de patas, de configuración adecuada, por ejemplo prismático- triangular, recta, fijadas a la estructura base del mandril por su extremidad superior, de manera que estas patas, que quedan ligeramente sobreelevadas con respecto al plano de la placa base, cumplen una doble función, por un lado constituye sufrideras sobre las que se produce el pegado del lateral colindante con el primer sector que forma el prisma de esquina y por otro lado, permitir el plegado del segundo sector que forma el refuerzo prismático a través de la arista vertical correspondiente de dicha pata, cuando sobre dichas aletas se actúa con correspondientes empujadores laterales, que resultan perfectamente accesibles al interior del mandril, por cuanto que éste carece de paredes laterales y de ningún otro elemento que estorbe a dichos empujadores.To compensate for these wide recesses of the vertices of the motherboard, the mandrel incorporates in correspondence with such vertices as legs, of suitable configuration, by prismatic-triangular example, straight, fixed to the base structure of the mandrel by its upper limb, so that these legs, that remain slightly raised with respect to the plane of the motherboard, they fulfill a double function, on the one hand it constitutes Suffers on which the side sticking occurs adjacent to the first sector that forms the corner prism and by on the other hand, allow the folding of the second sector that forms the prismatic reinforcement through the corresponding vertical edge of said leg, when said fins are operated with corresponding side pushers, which are perfectly accessible inside the mandrel, since it lacks side walls and no other element that hinders said pushers

Las escotaduras en cuadrante circular de los vértices de la placa base se prolongan, en correspondencia con dos de los lados de la misma, preferentemente en correspondencia con aquellos que resultan próximos a los que van a ser los testeros de la caja, en sendos rebajes escalonados de amplitud adecuada para permitir el acoplamiento en los mismos del tramo terminal de las repetidamente citadas aletas constitutivas de los refuerzos prismático-triangulares de las esquinas de la caja, sectores terminales que al fijarse mediante adhesivo a la cara interna de los testeros estabilizan convenientemente tales refuerzos.The circular quadrant recesses of the vertices of the motherboard extend, corresponding to two from the sides thereof, preferably in correspondence with those that are close to those who are going to be the testeros of the box, in two staggered recesses of adequate amplitude for allow the coupling in them of the terminal section of the repeatedly cited constitutive fins of reinforcements prismatic-triangular box corners, terminal sectors that when fixed by adhesive to the face internal of the heads conveniently stabilize such reinforcement.

Volviendo nuevamente a las patas situadas en correspondencia con las aristas verticales del mandril, estas se fijan, por su extremidad posterior y con posibilidad de regulación posicional, de una pareja de armaduras en "U", contrapuestas, cuyas concavidades quedan enfrentadas a los respectivos testeros y cuya rama media es también de estructura telescópica, para permitir a su vez la regulación posicional de las citadas patas, en sentido transversal al anterior, estando estas armaduras en "U" solidarizadas a una cruceta central que superiormente recibe el accionamiento del correspondiente pistón y que inferiormente se relacionan, mediante barras distanciadoras, con la zona media de la placa base inferior.Returning again to the legs located in correspondence with the vertical edges of the mandrel, these are set, by its posterior limb and with the possibility of regulation positional, of a pair of opposing "U" armors, whose concavities are faced with the respective heads and whose middle branch is also of telescopic structure, to allow in turn the positional regulation of the aforementioned legs, in the sense transversal to the previous one, being these "U" armors in solidarity with a central crosshead that superiorly receives the actuation of the corresponding piston and that inferiorly relate, by means of spacers, with the middle zone of the bottom base plate.

De esta manera el mandril deja totalmente diáfanas las zonas del mismo enfrentadas a los testeros de la caja, tanto lateral como superiormente, lo que permite la acción de palas basculantes en estas zonas, que acceden al interior de la caja por la embocadura de la misma.In this way the mandrel leaves completely clear the areas of the same facing the front of the box, both laterally and superiorly, which allows the action of blades swingarms in these areas, which access the inside of the box by the mouth of it.

Descripción de los dibujosDescription of the drawings

Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características del invento, de acuerdo con un ejemplo preferente de realización práctica del mismo, se acompaña como parte integrante de dicha descripción, un juego de dibujos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente:To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as part member of that description, a set of drawings where with illustrative and non-limiting nature, what has been represented next:

La figura 1.- Muestra, según una vista en perspectiva, un mandril para máquinas conformadoras de cajas de cartón realizado de acuerdo con el objeto de la presente invención.Figure 1.- Shows, according to a view in perspective, a mandrel for box forming machines cardboard made in accordance with the purpose of this invention.

La figura 2.- Muestra, también según una vista en perspectiva, un detalle de una de las esquinas del mandril en fase terminal de conformación de una caja de cartón.Figure 2.- Shows, also according to a view in perspective, a detail of one of the corners of the mandrel in phase forming terminal of a cardboard box.

Realización preferente de la invenciónPreferred Embodiment of the Invention

A la vista de las figuras reseñadas, especialmente de la figura 1, puede observarse como el mandril que se preconiza está estructurado a partir de una cruceta (1) situada centrada y superiormente en el contexto del mismo, a los extremos de cuyas ramas se fijan respectivas barras distanciadoras (2), que constituyen los medios de fijación a dicha cruceta de una placa inferior y rígida (3), que constituye el medio accionador sobre el sector de la placa de cartón correspondiente al fondo de la caja a conformar, cuando el mandril recibe la acción de un pistón situado por encima de él y convenientemente asociado a la cruceta (1).In view of the figures outlined, especially from figure 1, it can be seen as the mandrel that it is recommended that it is structured from a crosshead (1) located focused and superiorly in the context of it, to the extremes whose branches are fixed respective distance bars (2), which they constitute the fixing means to said crosshead of a plate bottom and rigid (3), which constitutes the actuator means on the sector of the cardboard plate corresponding to the bottom of the box a conform, when the mandrel receives the action of a piston located above it and conveniently associated with the crosshead (1).

La placa base (3), con respecto a cuya periferia las barras distanciadoras (2) quedan acusadamente remetidas, presenta en correspondencia con sus vértices sendas escotaduras (4), en forma de cuadrante circular, de considerable amplitud, escotaduras (4) que a su vez se prolongan por uno de sus extremos en rebajes escalonados (5) que afectan a los bordes menores de la placa (3), los correspondientes a los testeros de la caja a conformar.The base plate (3), with respect to whose periphery the distance bars (2) are markedly tucked, it presents in correspondence with its vertices paths recesses (4), in the form of a circular quadrant, of considerable amplitude, recesses (4) that in turn extend through one of its ends in stepped recesses (5) that affect the minor edges of the plate (3), those corresponding to the box heads to shape.

Complementariamente a los extremos del brazo más largo de la cruceta (1) se fijan sendas armaduras en "U" (6), de concavidades orientadas hacia fuera, que ocupan el plano extremo superior del mandril, y a cuyas ramas laterales, en su extremidad libre, se fijan respectivas patas (7), de configuración prismático-triangular recta, que descienden verticalmente hasta las proximidades del plano correspondiente a la placa base (3) y que, más concretamente, se sitúan en correspondencia con las aristas verticales de la caja de cartón a obtener, colaborando con dicha placa base (3) en la deformación inicial de la plancha de la placa de cartón para abatir las porciones de la misma correspondientes a gualderas y testeros con respecto a su fondo.Complementarily to the ends of the arm more along the crosshead (1) two "U" trusses are fixed (6), outward-facing concavities, which occupy the extreme plane upper of the mandrel, and whose lateral branches, at its tip free, respective legs (7) are fixed, of configuration straight prismatic-triangular, descending vertically to the vicinity of the plane corresponding to the motherboard (3) and that, more specifically, are located in correspondence with the vertical edges of the cardboard box to obtain, collaborating with said base plate (3) in the deformation Initial plate plate iron to lower the portions of it corresponding to wickets and testeros with Regarding your background.

Las escotaduras (4) de la placa base (3) están adecuadamente dimensionadas de acuerdo con su función, concretamente la de permitir el abatimiento de las aletas (8) que, como prolongación lateral de los testeros (9), están destinadas a replegarse sobre la cara interna de los propios testeros, configurando la clásica columna o refuerzo prismático-triangular en correspondencia con las aristas verticales o esquinas de la caja, por lo que a su vez las patas (7) adoptan distinta sección triangular, siendo ésta menor, de lo contrario, no permitiría el deslizamiento de estas patas sobre el interior de estos prismas de refuerzos al retirarse el mandril. Estas patas (7) actúan como sufrideras que permiten el debido pegado del lado (10) sobre el refuerzo prismático (8) y también, a través de su arista (17) permite el plegado del refuerzo (8) sin deformación en su pliegue, mediante la actuación de los plegadores extremos correspondientes.The recesses (4) of the base plate (3) are properly sized according to its function, specifically that of allowing the folding of the fins (8) that, as a lateral extension of the heads (9), they are intended to fall back on the inside of the heads themselves, configuring the classic column or reinforcement prismatic-triangular in correspondence with the vertical edges or corners of the box, so that in turn the legs (7) adopt different triangular section, this being smaller, otherwise, it would not allow the sliding of these legs on the inside of these reinforcement prisms when the mandrel is removed. These legs (7) act as sufrideras that allow due glued on the side (10) over the prismatic reinforcement (8) and also, to through its edge (17) allows the folding of the reinforcement (8) without deformation in its fold, by the action of the folding corresponding ends.

Por su parte los rebajes (5), prolongación de las escotaduras (4), tienen como finalidad recibir al tramo terminal (8') de las aletas (8), que perfectamente adaptado a la cara interna del testero (9), se fija a este último mediante adhesivo, cuando una pala basculante superior actúa sobre él, con plena accesibilidad a través de la armadura (6) correspondiente. Asimismo, el recorte (5) evita que la placa arrastre cola posicionada en el testero (9) para permitir adherir el sector (8) sobre el plano interno de dicho testero (9).On the other hand the recesses (5), prolongation of the recesses (4), are intended to receive the terminal section (8 ') of the fins (8), which perfectly adapted to the face internal to the tester (9), it is fixed to the latter by means of adhesive, when an upper tilt shovel acts on it, with full accessibility through the corresponding armor (6). Likewise,  the cutout (5) prevents the tail drag plate positioned in the testero (9) to allow the sector (8) to adhere to the plane internal of said tester (9).

Solo resta señalar por último que, como también se observa la figura 1, las ramas laterales (11) de las armaduras (6) están provistas de sendos orificios rasgados (12), en los que son susceptibles de jugar tomillos (13) de fijación de las patas (7) correspondientes, en orden a poder desplazar dichas patas (7) a lo largo de tales brazos (11), a la vez que estos últimos pueden aproximarse o distanciarse a voluntad, y consecuentemente hacerlo también cada pareja de patas (7) asociadas a cada armadura (6), merced al hecho de que en su rama media se establece un sector intermedio que se corresponde con la propia referencia (6) y que recibe, a través de tornillos (14) a sectores laterales (15) provistos a su vez de orificios rasgados (16) que permiten su movilidad previamente al apriete de los tornillos (14).It only remains to note that, as well as Figure 1 is observed, the lateral branches (11) of the reinforcements (6) are provided with two torn holes (12), in which are likely to play thyme (13) for fixing the legs (7) corresponding, in order to be able to move said legs (7) to along such arms (11), while the latter can approach or distance at will, and consequently do so also each pair of legs (7) associated with each armor (6), thanks to the fact that a sector is established in its middle branch intermediate that corresponds to the reference itself (6) and that receives, through screws (14) to lateral sectors (15) provided in turn with torn holes (16) that allow its mobility before tightening the screws (14).

El vaciado (18) que presenta el mandril, permite introducir en el recinto de la caja una pala que gira 180° externa y que actúa directamente sobre el sector final (8) de los refuerzos prismáticos, cuya presión adosa fuertemente este sector (8') sobre la pared interna del testero (9).The emptying (18) presented by the mandrel allows insert an external 180 ° rotating blade into the enclosure and that acts directly on the final sector (8) of the reinforcements binoculars, whose pressure strongly adheres this sector (8 ') on the inner wall of the tester (9).

De esta manera el imaginario rectángulo definido por el posicionamiento de las patas (7) puede ser variado a voluntad, en sentido positivo o en sentido negativo, para adecuarlo a diferentes tamaños de cajas, lo que hace que el mandril sea además polivalente.In this way the imaginary rectangle defined by the positioning of the legs (7) it can be varied to will, in a positive or a negative sense, to adapt it at different box sizes, which makes the mandrel also versatile.

Claims (4)

1. Mandril para máquinas conformadoras de cajas de cartón, del tipo de las que incorporan una placa base actuante sobre el sector de la placa de cartón correspondiente al fondo de la caja a obtener, cuando accionada por un pistón penetra en el seno de la cámara de conformación arrastrando consigo a dicha placa de cartón, caracterizado porque dicha placa base incorpora en correspondencia con sus vértices, amplias escotaduras en forma de cuadrante circular, dimensionalmente adecuadas para permitir el abatimiento hacia el interior de las aletas de la caja que configuran refuerzos prismático-triangulares en correspondencia con las esquinas de la misma, prolongándose estas escotaduras, en correspondencia con uno de sus extremos, en rebajes escalonados a su vez posicional y dimensionalmente adecuados para permitir el acceso del sector terminal de las citadas aletas, el destinado a adaptarse y fijarse a la cara interna de la pared lateral correspondiente de la caja, evitando arrastrar cola existente en dicha pared.1. Chuck for machines for forming cardboard boxes, of the type that incorporate a base plate acting on the sector of the cardboard plate corresponding to the bottom of the box to be obtained, when driven by a piston penetrates into the chamber of conformation dragging with said cardboard plate, characterized in that said base plate incorporates, in correspondence with its vertices, wide recesses in the form of a circular quadrant, dimensionally suitable to allow the inward folding of the box fins that configure prismatic reinforcements- triangular in correspondence with the corners of the same, extending these recesses, in correspondence with one of its ends, in stepped recesses at the same time positionally and dimensionally suitable to allow access of the terminal sector of said fins, the one designed to adapt and fix to the inner face of the corresponding side wall of the box, avoiding drag the existing tail in said wall. 2. Mandril para máquinas conformadoras de cajas de cartón, según reivindicación 1ª, caracterizado porque de la zona central de la placa base emergen una pluralidad de barras distanciadoras que las relacionan con una cruceta superior, la que recibe el
accionamiento del pistón de las máquinas, a cuyo brazo más largo son solidarias dos armaduras de configuración en "U", con su concavidad orientada hacia fuera, que a través de sus extremos libres reciben a sendas patas de sección preferiblemente prismático-triangulares, que descienden verticalmente hacia las proximidades del nivel de la placa base inferior y que se sitúan en correspondencia con las imaginarias aristas verticales de la caja a obtener, a la vez que actúan como sufrideras en el abatimiento del lado colindante adosándose al primer sector que configura las columnas prismático-triangulares de refuerzo de las esquinas de la caja, dejando dichas armaduras diáfana la zona del mandril correspondiente a los extremos de la embocadura de la caja, para el acceso en su interior de palas basculantes de armado.
2. Mandrel for carton forming machines, according to claim 1, characterized in that a plurality of spacer bars emerge from the central area of the base plate that relate them to an upper crosshead, which receives the
actuation of the piston of the machines, to whose longest arm two "U" configuration armors are in solidarity, with their concavity oriented outwards, which through their free ends receive legs of preferably prismatic-triangular section, which descend vertically towards the lower level of the lower base plate and that are in correspondence with the imaginary vertical edges of the box to be obtained, while acting as a cross-sectional abutment on the adjacent side by attaching to the first sector that configures the prismatic columns -triangular reinforcement of the corners of the box, leaving said diaphanous reinforcements the area of the mandrel corresponding to the ends of the mouth of the box, for access inside swiveling shovels.
3. Mandril para máquinas conformadoras de cajas de cartón, según reivindicaciones 1ª y 2ª, que se caracteriza porque las patas que descienden verticalmente de las armaduras en "U" permiten por su arista vertical (17) el plegado del sector de los refuerzos prismáticos que se sitúa transversalmente en los rincones de la caja.3. Chuck for machines for forming cardboard boxes, according to claims 1 and 2, characterized in that the legs that descend vertically from the "U" reinforcements allow for their vertical edge (17) the folding of the sector of the prismatic reinforcements that It is located transversely in the corners of the box. 4. Mandril para máquinas conformadoras de cajas de cartón, según reivindicaciones anteriores, caracterizado porque las patas están fijadas a las armaduras con posibilidad de regulación posicional, en sentido de aproximación y distanciamiento de dichas patas en sentido longitudinal de la caja, a la vez que las armaduras presentan su rama media telescópica, para permitir la regulación posicional de las patas en sentido transversal, confiriendo al mandril un carácter polivalente, que permite su utilización con cajas de diferente tamaño.4. Mandrel for machines for forming cardboard boxes, according to previous claims, characterized in that the legs are fixed to the frames with the possibility of positional adjustment, in the direction of approximation and distance of said legs in the longitudinal direction of the box, while the reinforcements have their telescopic middle branch, to allow the positional regulation of the legs in a transverse direction, giving the mandrel a versatile character, which allows its use with boxes of different sizes.
ES200200779A 2002-04-04 2002-04-04 MANDRILE FOR CONFORMING MACHINES OF CARTON BOXES. Expired - Fee Related ES2239860B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2321575A1 (en) * 2007-12-07 2009-06-08 Telesforo Gonzalez Olmos Automatic machine for forming carton boxes with reinforced corners (Machine-translation by Google Translate, not legally binding)
CN110001139A (en) * 2018-01-02 2019-07-12 芜湖市新京桥包装科技有限公司 A kind of apparatus for bending for corrugated board corner protector processing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1012130U (en) * 1989-11-23 1990-07-01 Segura Palenzuela Fernando Automatic folding stackable trays to mold. (Machine-translation by Google Translate, not legally binding)
ES1021628U (en) * 1992-06-09 1993-01-01 Indalcarton, S.A. Mold for shaping boxes and stackable trays. (Machine-translation by Google Translate, not legally binding)
ES2068729A1 (en) * 1991-08-19 1995-04-16 Embalaje Iberoamericana Improved machine for assembling open boxes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1012130U (en) * 1989-11-23 1990-07-01 Segura Palenzuela Fernando Automatic folding stackable trays to mold. (Machine-translation by Google Translate, not legally binding)
ES2068729A1 (en) * 1991-08-19 1995-04-16 Embalaje Iberoamericana Improved machine for assembling open boxes
ES1021628U (en) * 1992-06-09 1993-01-01 Indalcarton, S.A. Mold for shaping boxes and stackable trays. (Machine-translation by Google Translate, not legally binding)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2321575A1 (en) * 2007-12-07 2009-06-08 Telesforo Gonzalez Olmos Automatic machine for forming carton boxes with reinforced corners (Machine-translation by Google Translate, not legally binding)
CN110001139A (en) * 2018-01-02 2019-07-12 芜湖市新京桥包装科技有限公司 A kind of apparatus for bending for corrugated board corner protector processing

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