EP0493229A1 - Apparatus for removing waste from cut sheets of cardboard and the like - Google Patents

Apparatus for removing waste from cut sheets of cardboard and the like Download PDF

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Publication number
EP0493229A1
EP0493229A1 EP91403499A EP91403499A EP0493229A1 EP 0493229 A1 EP0493229 A1 EP 0493229A1 EP 91403499 A EP91403499 A EP 91403499A EP 91403499 A EP91403499 A EP 91403499A EP 0493229 A1 EP0493229 A1 EP 0493229A1
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EP
European Patent Office
Prior art keywords
arms
face
doctor blade
edge
cutting
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Granted
Application number
EP91403499A
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German (de)
French (fr)
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EP0493229B1 (en
Inventor
Serge Chiloff
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A T N
ATN
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ATN
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1836—Means for removing cut-out material or waste by pulling out
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096—Means to move product out of contact with tool
    • Y10T83/21—Out of contact with a rotary tool
    • Y10T83/2118—Stationary mover
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096—Means to move product out of contact with tool
    • Y10T83/217—Stationary stripper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2183—Product mover including gripper means

Definitions

  • the present invention relates to a shelling device associated with an apparatus for rotary cutting of a sheet of material such as cardboard or similar material.
  • Rotary cutting devices are commonly used in industry to cut, from a sheet of material such as cardboard, individual blanks intended to subsequently constitute, for example, packages. Following the cutting of these individual blanks, cardboard waste or scraps remain which correspond to all the areas of the web which are not used to constitute the individual blanks.
  • This cardboard waste must therefore be removed from the surface of the cutting cylinder, after each cutting operation, and for this purpose provision is made for pins carried by the surface of this cylinder at the places where the waste is formed, after cutting.
  • Each piece of cardboard constituting a waste is thus pierced by a spike and it is driven, while being held by this spike, in the direction of a shelling device which is intended to rid each spike of the piece of cardboard that it entails. .
  • the shelling devices known to date generally comprise a single piece member in the form of a "comb" having teeth directed towards the surface of the cutting cylinder and inclined at an appropriate angle relative to this surface.
  • This single-piece shelling comb is arranged so that the different pins carried by the cutting cylinder pass through the gaps between the teeth of the comb so that the cardboard waste carried by the outer extreme parts of the pins is gradually detached from them by sliding on the neighboring teeth of the peeling comb.
  • a shelling device of this type has the drawback that the pieces of cardboard often jam in the bottom of the gaps between the teeth of the shelling comb, these pieces of cardboard being able to accumulate and possibly cause rupture. spikes when the obstacle they manage to constitute is quite significant.
  • the present invention essentially aims to remedy this drawback by providing a dehulling device of particularly simple design and ensuring in an efficient manner and without risk of jamming the dehulling operation.
  • this shelling device associated with a rotary cutting device for a sheet of material, such as cardboard or similar material this shelling device constituting a sort of comb comprising a common base, parallel to the axis of the cylinder of section, by forming a support for a series of arms or parallel teeth extending in the direction of the cutting cylinder and ending in the immediate vicinity of the peripheral surface of this cylinder, these arms delimiting between them intervals in which pins can pass integral with the peripheral surface of the cutting cylinder and transporting pieces of material constituting cutting waste to be detached from the pins by the arms of the dehulling device, is characterized in that the common base of the dehulling device in the form of a comb consists of a tree on which pairs of arms parallel are locked, by means of screws, in variable positions depending on the longitudinal position of the pins on the cutting cylinder and in that the two arms of each pair, symmetrical with respect to a vertical and transverse plane, have faces internal, that is to say which are turned towards each other, shaped so as
  • Figure 1 is a vertical sectional view of a shelling device according to the invention associated with a cutting cylinder of a rotary cutting device.
  • Figure 2 is a partial plan view, on a larger scale, of the shelling device.
  • Figure 3 is a front view of two adjacent doctor blades of the shelling device.
  • the comb-shaped shelling device according to the invention which is indicated as a whole by the reference 1 in FIG. 1, is associated with a cutting cylinder 2 of a rotary cutting device.
  • This cutting cylinder 2 carries, on its peripheral surface, cutting threads which ensure the cutting of a sheet of material, such as a sheet of cardboard, according to a predetermined path, to form individual blanks of cardboard from this tablecloth.
  • the areas of the web that remain after cutting the blanks individual and which thus constitute cutting waste, must be eliminated and for this purpose the cutting cylinder 2 carries, at the places where this waste is formed, pins 3 embedded in the lateral surface of the cylinder 2 and having a pointed external end 3a as it appears in FIG. 3. Following a cutting operation the pins 3 are pressed, by their pointed ends 3a, into pieces of cardboard 4 constituting cutting waste.
  • the shelling device 1 is intended to rid all the pins 3 of the pieces of cardboard 4 constituting cutting waste.
  • the dehulling device 1 which is arranged above the cutting cylinder 2 but which could be placed in another suitable place, comprises a longitudinal shaft 5, that is to say which is parallel to the axis of the cutting cylinder 2.
  • Arms 6, 7 are attached to this shaft 5 which are substantially radial, mutually parallel and distant from each other, these arms 6, 7 constituting in a way the teeth of the shelling "comb" 1.
  • These arms 6, 7 are arranged in pairs of arms, symmetrical to one another with respect to the same vertical and transverse plane P, these arms extending towards the cutting cylinder 2 and ending in close proximity to that -this.
  • two of these arms are represented, namely a left arm 6 and a right arm 7, symmetrical with respect to the vertical and transverse plane P.
  • Each of the arms 6 and 7 comprises a base 8 constituted by a tight and locked support block on the shaft 5, by means of a screw 9, and a front part forming a doctor blade 11 which extends the base 8 and which is fixed to this base by means of screws 12.
  • Each doctor blade 11 has a flat upper face 11a which is inclined with respect to the horizontal and which ends with a horizontal edge 11b, parallel to the axis of the cutting cylinder 2, located in the immediate vicinity of the lateral surface of this cylinder.
  • the edge 11b is part of an acute angle dihedral formed by the upper face 11a and a lower and anterior face 11c which is inclined so that the end part of each doctor blade 11 is tapered.
  • each doctor blade 11 is delimited by an external vertical face 11e which is rectilinear.
  • the internal face of each doctor blade that is to say the one which faces towards the vertical plane of symmetry P and the other doctor blade, is stepped and it comprises, in its front part, a flat front internal face 11f which is tilted both down and back.
  • This inclined front face 11f is delimited, at its upper part, by an anterior and upper edge 11g contained in the plane of the upper face 11a, parallel to the vertical plane of symmetry P and connecting perpendicularly to the edge 11b, and by a another upper edge 11h also contained in the plane of the upper face 11a, following the anterior edge 11g and inclined from front to back and towards the outside of the doctor blade 11, to reach a vertical and internal transverse face 11i of the doctor blade 11.
  • the internal inclined front face 11f of the doctor blade 11 also connects to the inclined front face 11c along an edge 11j which, seen in plan as it appears in FIG. 2, is inclined from front to back , outwards, with respect to the vertical plane of symmetry P.
  • the interval between the two doctor blades 11 first defines, in its front part, a relatively narrow entry slit, of width a delimited by the two front edges 11g parallel to the plane P, then an intermediate part flared towards the rear and which is defined by the two edges 11h and finally a very wide interval b between the two internal vertical faces 11i.
  • the space below the entry slit, between the two front edges 11g, and the flared part, located between the two inclined edges 11h, is also flared both backwards and downwards, this space being delimited by the two inclined internal anterior faces 11f.
  • each pair of left 6 and right 7 arms is blocked on the shaft 5, by means screws 9, so that the entry slot which is delimited between the two front edges 11g, is located substantially opposite the pins 3 and that these can engage in this entry slot.
  • the vertical plane of symmetry P of the two arms 6, 7 practically coincides with the vertical and transverse plane in which the pins 3 move.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Details Of Cutting Devices (AREA)
  • Paper (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Abstract

Apparatus for removing waste, consisting of a comb formed by a series of parallel arms (6, 7) extending in the direction of the cutting cylinder (2), delimiting between them gaps in which spikes (3) on the peripheral surface of the cutting cylinder (2) can pass and transporting pieces of material (4) constituting cutting waste to be detached from the spikes (3), characterised in that the apparatus for removing waste (1) consists of a shaft (5) on which the pairs of parallel arms (6, 7) are immobilised in positions which can vary as a function of the longitudinal position of the spikes (3) on the cutting cylinder (2), and in that the arms (6, 7) of each pair have inner faces (11f, 11i) which are shaped so as to delimit between them a gap whose width increases from front to rear. <IMAGE>

Description

La présente invention concerne un dispositif de décorticage associé à un appareil de découpage rotatif d'une nappe de matériau tel que carton ou matériau similaire.The present invention relates to a shelling device associated with an apparatus for rotary cutting of a sheet of material such as cardboard or similar material.

On utilise couramment, dans l'industrie, des appareils de découpage rotatifs pour découper, à partir d'une nappe de matériau tel que le carton, des flans individuels destinés à constituer ultérieurement, par exemple, des emballages. A la suite du découpage de ces flans individuels il subsiste des déchets ou chutes de carton qui correspondent à toutes les zones de la nappe non utilisées pour constituer les flans individuels. Ces déchets de carton doivent donc être élminés de la surface du cylindre de coupe, après chaque opération de découpage, et à cet effet on prévoit des picots portés par la surface de ce cylindre aux endroits où sont formés, après le découpage, les déchets. Chaque morceau de carton constituant un déchet se trouve ainsi percé par un picot et il est entraîné, tout en étant maintenu par ce picot, en direction d'un dispositif de décorticage qui est destiné à débarrasser chaque picot du morceau de carton qu'il entraîne.Rotary cutting devices are commonly used in industry to cut, from a sheet of material such as cardboard, individual blanks intended to subsequently constitute, for example, packages. Following the cutting of these individual blanks, cardboard waste or scraps remain which correspond to all the areas of the web which are not used to constitute the individual blanks. This cardboard waste must therefore be removed from the surface of the cutting cylinder, after each cutting operation, and for this purpose provision is made for pins carried by the surface of this cylinder at the places where the waste is formed, after cutting. Each piece of cardboard constituting a waste is thus pierced by a spike and it is driven, while being held by this spike, in the direction of a shelling device which is intended to rid each spike of the piece of cardboard that it entails. .

Les dispositifs de décorticage connus jusqu'à ce jour comprennent généralement un organe d'une seule pièce en forme de "peigne" présentant des dents dirigées vers la surface du cylindre de coupe et inclinées d'un angle approprié par rapport à cette surface. Ce peigne de décorticage d'une seule pièce est disposé de manière que les différents picots portés par le cylindre de coupe passent dans les intervalles entre les dents du peigne si bien que les déchets de carton portés par les parties extrêmes externes des picots sont détachés progressivement de ceux-ci en glissant sur les dents voisines du peigne de décorticage. Un dispositif de décorticage de ce type présente toutefois l'inconvénient qu'il se produit souvent un bourrage des morceaux de carton dans le fond des intervalles entre les dents du peigne de décorticage, ces morceaux de carton pouvant s'accumuler et provoquer éventuellement une rupture des picots lorsque l'obstacle qu'ils arrivent à constituer est assez important.The shelling devices known to date generally comprise a single piece member in the form of a "comb" having teeth directed towards the surface of the cutting cylinder and inclined at an appropriate angle relative to this surface. This single-piece shelling comb is arranged so that the different pins carried by the cutting cylinder pass through the gaps between the teeth of the comb so that the cardboard waste carried by the outer extreme parts of the pins is gradually detached from them by sliding on the neighboring teeth of the peeling comb. However, a shelling device of this type has the drawback that the pieces of cardboard often jam in the bottom of the gaps between the teeth of the shelling comb, these pieces of cardboard being able to accumulate and possibly cause rupture. spikes when the obstacle they manage to constitute is quite significant.

La présente invention vise essentiellement à remédier à cet inconvénient en procurant un dispositif de décorticage de conception particulièrement simple et assurant d'une manière efficace et sans risque de bourrage l'opération de décorticage.The present invention essentially aims to remedy this drawback by providing a dehulling device of particularly simple design and ensuring in an efficient manner and without risk of jamming the dehulling operation.

A cet effet ce dispositif de décorticage associé à un appareil de découpage rotatif d'une nappe de matériau, tel que carton ou matériau similaire, ce dispositif de décorticage constituant une sorte de peigne comportant une base commune, parallèle à l'axe du cylindre de coupe, en formant un support pour une série de bras ou dents parallèles s'étendant en direction du cylindre de coupe et se terminant à proximité immédiate de la surface périphérique de ce cylindre, ces bras délimitant entre eux des intervalles dans lesquels peuvent passer des picots solidaires de la surface périphérique du cylindre de coupe et transportant des morceaux de matériau constituant des déchets de coupe devant être détachés des picots par les bras du dispositif de décorticage, est caractérisé en ce que l'embase commune du dispositif de décorticage en forme de peigne est constituée par un arbre sur lequel des paires de bras parallèles sont bloqués, au moyen de vis, dans des positions variables en fonction de la position longitudinale des picots sur le cylindre de coupe et en ce que les deux bras de chaque paire, symétriques par rapport à un plan vertical et transversal, présentent des faces internes, c'est-à-dire qui sont tournées l'une vers l'autre, conformées de manière à délimiter entre elles un intervalle dont la largeur va en augmentant d'avant en arrière, c'est-à-dire des extrémités des bras vers l'arbre formant support commun.To this end, this shelling device associated with a rotary cutting device for a sheet of material, such as cardboard or similar material, this shelling device constituting a sort of comb comprising a common base, parallel to the axis of the cylinder of section, by forming a support for a series of arms or parallel teeth extending in the direction of the cutting cylinder and ending in the immediate vicinity of the peripheral surface of this cylinder, these arms delimiting between them intervals in which pins can pass integral with the peripheral surface of the cutting cylinder and transporting pieces of material constituting cutting waste to be detached from the pins by the arms of the dehulling device, is characterized in that the common base of the dehulling device in the form of a comb consists of a tree on which pairs of arms parallel are locked, by means of screws, in variable positions depending on the longitudinal position of the pins on the cutting cylinder and in that the two arms of each pair, symmetrical with respect to a vertical and transverse plane, have faces internal, that is to say which are turned towards each other, shaped so as to delimit between them an interval whose width is increasing from front to back, that is to say of the ends arms towards the tree forming a common support.

On décrira ci-après, à titre d'exemple non limitatif, une forme d'exécution de la présente invention, en référence au dessin annexé sur lequel :An embodiment of the present invention will be described below, by way of non-limiting example, with reference to the appended drawing in which:

La figure 1 est une vue en coupe verticale d'un dispositif de décorticage suivant l'invention associé à un cylindre de coupe d'un appareil de découpage rotatif.Figure 1 is a vertical sectional view of a shelling device according to the invention associated with a cutting cylinder of a rotary cutting device.

La figure 2 est une vue en plan partiel, à plus grande échelle, du dispositif de décorticage.Figure 2 is a partial plan view, on a larger scale, of the shelling device.

La figure 3 est une vue de face de deux racles voisines du dispositif de décorticage.Figure 3 is a front view of two adjacent doctor blades of the shelling device.

Le dispositif de décorticage en forme de peigne suivant l'invention qui est indiqué dans son ensemble par la référence 1 sur la figure 1, est associé à un cylindre de coupe 2 d'un appareil de découpage rotatif. Ce cylindre de coupe 2 porte, sur sa surface périphérique, des filets coupants qui assurent le découpage d'une nappe de matériau, telle qu'une nappe de carton, suivant un tracé prédéterminé, pour constituer des flans de carton individuels à partir de cette nappe. Les zones de la nappe qui subsistent après le découpage des flans individuels et qui constituent ainsi des déchets de coupe, doivent être éliminées et à cet effet le cylindre de coupe 2 porte, aux endroits où sont formés ces déchets, des picots 3 encastrés dans la surface latérale du cylindre 2 et présentant une extrémité externe 3a pointue comme il apparaît sur la figure 3. A la suite d'une opération de découpage les picots 3 sont enfoncés, par leurs extrémités pointues 3a, dans des morceaux de carton 4 constituant des déchets de coupe. Le dispositif de décorticage 1 est destiné à débarrasser tous les picots 3 des morceaux de carton 4 constituant des déchets de coupe.The comb-shaped shelling device according to the invention, which is indicated as a whole by the reference 1 in FIG. 1, is associated with a cutting cylinder 2 of a rotary cutting device. This cutting cylinder 2 carries, on its peripheral surface, cutting threads which ensure the cutting of a sheet of material, such as a sheet of cardboard, according to a predetermined path, to form individual blanks of cardboard from this tablecloth. The areas of the web that remain after cutting the blanks individual and which thus constitute cutting waste, must be eliminated and for this purpose the cutting cylinder 2 carries, at the places where this waste is formed, pins 3 embedded in the lateral surface of the cylinder 2 and having a pointed external end 3a as it appears in FIG. 3. Following a cutting operation the pins 3 are pressed, by their pointed ends 3a, into pieces of cardboard 4 constituting cutting waste. The shelling device 1 is intended to rid all the pins 3 of the pieces of cardboard 4 constituting cutting waste.

Suivant l'invention le dispositif de décorticage 1 qui est disposé au-dessus du cylindre de coupe 2 mais qui pourrait être placé en un autre endroit approprié, comporte un arbre longitudinal 5, c'est-à-dire qui est parallèle à l'axe du cylindre de coupe 2. Sur cet arbre 5 sont fixés des bras 6, 7 sensiblement radiaux, parallèles entre eux et distants les uns des autres, ces bras 6, 7 constituant en quelque sorte les dents du "peigne" de décorticage 1. Ces bras 6, 7 sont disposés par paires de bras, symétriques l'un de l'autre par rapport à un même plan vertical et transversal P, ces bras s'étendant vers le cylindre de coupe 2 et se terminant à proximité immédiate de celui-ci. Sur la figure 2 deux de ces bras sont représentés à savoir un bras gauche 6 et un bras droit 7, symétriques par rapport au plan vertical et transversal P. Chacun des bras 6 et 7 comprend une embase 8 constituée par un bloc support serré et bloqué sur l'arbre 5, au moyen d'une vis 9, et une partie antérieure formant racle 11 qui prolonge l'embase 8 et qui est fixée sur cette embase au moyen de vis 12. Chaque racle 11 présente une face supérieure plane 11a qui est inclinée par rapport à l'horizontale et qui se termine par un arête horizontale 11b, parallèle à l'axe du cylindre de coupe 2, située à proximité immédiate de la surface latérale de ce cylindre. L'arête 11b fait partie d'un dièdre à angle aigu constitué par la face supérieure 11a et une face inférieure et antérieure 11c qui est inclinée de manière que la partie extrême de chaque racle 11 soit effilée. Cette face inférieure et antérieure inclinée 11c se raccorde à une face inférieure et postérieure 11d qui est parallèle à la face supérieure 11a et qui est bloquée contre une face supérieure plane de l'embase 8 sous l'action des vis de blocage 12. Vue en plan chaque racle 11 est délimitée par une face verticale externe 11e qui est rectiligne. Par contre la face interne de chaque racle, c'est-à-dire celle qui est tournée vers le plan vertical de symétrie P et l'autre racle, est étagée et elle comprend, dans sa partie antérieure, une face interne antérieure plane 11f qui est inclinée à la fois vers le bas et vers l'arrière. Cette face antérieure inclinée 11f est délimitée, à sa partie supérieure, par une arête antérieure et supérieure 11g contenue dans le plan de la face supérieure 11a, parallèle au plan vertical de symétrie P et se raccordant perpendiculairement à l'arête 11b, et par une autre arête supérieure 11h également contenue dans le plan de la face supérieure 11a, faisant suite à l'arête antérieure 11g et inclinée d'avant en arrière et vers l'extérieur de la racle 11, pour rejoindre une face verticale et transversale interne 11i de la racle 11. La face antérieure inclinée interne 11f de la racle 11 se raccorde également à la face antérieure inclinée 11c le long d'une arête 11j qui, vue en plan comme il apparaît sur la figure 2, est inclinée d'avant en arrière, vers l'extérieur, par rapport au plan vertical de symétrie P.According to the invention the dehulling device 1 which is arranged above the cutting cylinder 2 but which could be placed in another suitable place, comprises a longitudinal shaft 5, that is to say which is parallel to the axis of the cutting cylinder 2. Arms 6, 7 are attached to this shaft 5 which are substantially radial, mutually parallel and distant from each other, these arms 6, 7 constituting in a way the teeth of the shelling "comb" 1. These arms 6, 7 are arranged in pairs of arms, symmetrical to one another with respect to the same vertical and transverse plane P, these arms extending towards the cutting cylinder 2 and ending in close proximity to that -this. In FIG. 2, two of these arms are represented, namely a left arm 6 and a right arm 7, symmetrical with respect to the vertical and transverse plane P. Each of the arms 6 and 7 comprises a base 8 constituted by a tight and locked support block on the shaft 5, by means of a screw 9, and a front part forming a doctor blade 11 which extends the base 8 and which is fixed to this base by means of screws 12. Each doctor blade 11 has a flat upper face 11a which is inclined with respect to the horizontal and which ends with a horizontal edge 11b, parallel to the axis of the cutting cylinder 2, located in the immediate vicinity of the lateral surface of this cylinder. The edge 11b is part of an acute angle dihedral formed by the upper face 11a and a lower and anterior face 11c which is inclined so that the end part of each doctor blade 11 is tapered. This inclined lower and anterior face 11c is connected to a lower and posterior face 11d which is parallel to the upper face 11a and which is locked against a flat upper face of the base 8 under the action of the locking screws 12. View in plane each doctor blade 11 is delimited by an external vertical face 11e which is rectilinear. On the other hand, the internal face of each doctor blade, that is to say the one which faces towards the vertical plane of symmetry P and the other doctor blade, is stepped and it comprises, in its front part, a flat front internal face 11f which is tilted both down and back. This inclined front face 11f is delimited, at its upper part, by an anterior and upper edge 11g contained in the plane of the upper face 11a, parallel to the vertical plane of symmetry P and connecting perpendicularly to the edge 11b, and by a another upper edge 11h also contained in the plane of the upper face 11a, following the anterior edge 11g and inclined from front to back and towards the outside of the doctor blade 11, to reach a vertical and internal transverse face 11i of the doctor blade 11. The internal inclined front face 11f of the doctor blade 11 also connects to the inclined front face 11c along an edge 11j which, seen in plan as it appears in FIG. 2, is inclined from front to back , outwards, with respect to the vertical plane of symmetry P.

Du fait de cette conformation particulière de la partie antérieure de chacune de deux racles 11 voisines l'une de l'autre et symétriques par rapport au plan P, l'intervalle entre les deux racles 11 définit d'abord, dans sa partie antérieure, une fente d'entrée relativement étroite, de largeur a délimitée par les deux arêtes antérieures 11g parallèles au plan P, puis une partie intermédiaire évasée vers l'arrière et qui est définie par les deux arêtes 11h et enfin un intervalle de grande largeur b entre les deux faces verticales internes 11i. L'espace situé en-dessous de la fente d'entrée, entre les deux arêtes antérieures 11g, et de la partie évasée, située entre les deux arêtes inclinées 11h, est également évasé à la fois vers l'arrière et vers le bas, cet espace étant délimité par les deux faces antérieures internes inclinées 11f.Because of this particular conformation of the front part of each of two doctor blades 11 which are adjacent to each other and symmetrical with respect to the plane P, the interval between the two doctor blades 11 first defines, in its front part, a relatively narrow entry slit, of width a delimited by the two front edges 11g parallel to the plane P, then an intermediate part flared towards the rear and which is defined by the two edges 11h and finally a very wide interval b between the two internal vertical faces 11i. The space below the entry slit, between the two front edges 11g, and the flared part, located between the two inclined edges 11h, is also flared both backwards and downwards, this space being delimited by the two inclined internal anterior faces 11f.

Pour assurer une opération de décorticage, c'est-à-dire l'élimination des morceaux de carton 4 constituant les déchets portés par les picots 3, chaque paire de bras gauche 6 et droit 7 est bloquée sur l'arbre 5, au moyen des vis 9, de telle manière que la fente d'entrée qui est délimitée entre les deux arêtes antérieures 11g, soit située sensiblement en regard des picots 3 et que ceux-ci puissent s'engager dans cette fente d'entrée. Autrement dit on fait en sorte que le plan vertical de symétrie P des deux bras 6, 7 coïncide pratiquement avec le plan vertical et transversal dans lequel se déplacent les picots 3. De ce fait lorsqu'un picot 3, entraînant avec lui un morceau de carton 4, commence à s'engager dans la fente d'entrée entre les deux arêtes 11g, le morceau de carton 4 qu'il transporte et dont la dimension latérale est plus grande que la largeur de la fente d'entrée entre les arêtes 11g, commence à glisser sur les faces supérieures 11a des deux racles 11. Du fait de l'inclinaison des bras 6 et 7 par rapport à la surface latérale du cylindre de coupe 2, chaque morceau de carton 4 porté par un picot 3 tend à être détaché progressivement de ce picot au fur et à mesure qu'il glisse sur les faces supérieures 11a des deux racles 11. Il arrive ensuite dans la zone évasée délimitée par les deux arêtes 11h où il est alors totalement détaché du picot 3 : il peut alors tomber dans un dispositif de récupération sous-jacent non représenté. Du fait de la prévision de l'espace évasé d'avant en arrière et de haut en bas, dans la partie antérieure des racles 11, le risque de bourrage est totalement éliminé puisque les morceaux de carton détachés 4 peuvent tomber librement dans l'intervalle entre les deux racles 11.To ensure a shelling operation, that is to say the elimination of the pieces of cardboard 4 constituting the waste carried by the pins 3, each pair of left 6 and right 7 arms is blocked on the shaft 5, by means screws 9, so that the entry slot which is delimited between the two front edges 11g, is located substantially opposite the pins 3 and that these can engage in this entry slot. In other words, we make sure that the vertical plane of symmetry P of the two arms 6, 7 practically coincides with the vertical and transverse plane in which the pins 3 move. As a result, when a pin 3, carrying with it a piece of cardboard 4, begins to engage in the entry slot between the two edges 11g, the piece of cardboard 4 which it carries and whose lateral dimension is greater than the width of the entry slot between the edges 11g , begins to slide on the upper faces 11a of the two doctor blades 11. From made of the inclination of the arms 6 and 7 with respect to the lateral surface of the cutting cylinder 2, each piece of cardboard 4 carried by a pin 3 tends to be gradually detached from this pin as it slides on the upper faces 11a of the two doctor blades 11. It then arrives in the flared zone delimited by the two edges 11h where it is then completely detached from the pin 3: it can then fall into an underlying recovery device, not shown. Due to the provision of the flared space from front to back and from top to bottom, in the front part of the doctor blades 11, the risk of jamming is completely eliminated since the detached pieces of cardboard 4 can fall freely in the meantime between the two doctor blades 11.

Claims (5)

Dispositif de décorticage (1) associé à un appareil (2) de découpage rotatif d'une nappe de matériau, tel que carton ou matériau similaire, ce dispositif de décorticage (1) constituant une sorte de peigne comportant une base commune (5), parallèle à l'axe du cylindre de coupe (2), en formant un support pour une série de bras ou dents parallèles (6, 7) s'étendant en direction du cylindre de coupe (2) et se terminant à proximité immédiate de la surface périphérique de ce cylindre, ces bras délimitant entre eux des intervalles dans lesquels peuvent passer des picots (3) solidaires de la surface périphérique du cylindre de coupe (2) et transportant des morceaux de matériau (4) constituant des déchets de coupe devant être détachés des picots (3) par les bras du dispositif de décorticage, caractérisé en ce que l'embase commune du dispositif de décorticage (1) en forme de peigne est constituée par un arbre (5) sur lequel des paires de bras parallèles (6, 7) sont bloqués, au moyen de vis (9), dans des positions variables en fonction de la position longitudinale des picots (3) sur le cylindre de coupe (2) et en ce que les deux bras (6, 7) de chaque paire, symétriques par rapport à un plan vertical et tranversal (P), présentent des faces internes (11f. 11i), c'est-à-dire qui sont tournées l'une vers l'autre conformées de manière à délimiter entre elles un intervalle dont la largeur va en augmentant d'avant en arrière, c'est-à-dire des extrémités (11b) des bras (6, 7) vers l'arbre formant support commun (5).Shelling device (1) associated with an apparatus (2) for rotary cutting of a sheet of material, such as cardboard or similar material, this shelling device (1) constituting a sort of comb comprising a common base (5), parallel to the axis of the cutting cylinder (2), forming a support for a series of parallel arms or teeth (6, 7) extending in the direction of the cutting cylinder (2) and ending in close proximity to the peripheral surface of this cylinder, these arms delimiting between them intervals in which pins (3) can pass secured to the peripheral surface of the cutting cylinder (2) and transporting pieces of material (4) constituting cutting waste to be detached from the pins (3) by the arms of the dehulling device, characterized in that the common base of the dehulling device (1) in the form of a comb consists of a shaft (5) on which pairs of parallel arms (6 , 7) are locked, by means of screws (9), in variable positions depending on the longitudinal position of the pins (3) on the cutting cylinder (2) and in that the two arms (6, 7) of each pair, symmetrical relative to a vertical and transverse plane (P), have internal faces (11f. 11i), that is to say which are turned towards each other shaped so as to delimit between them a gap whose width is increasing from front to back, that is to say of the ends (11b) of the arms (6, 7) towards the shaft forming a common support (5). Dipsositif suivant la revendication 1, caractérisé en ce que chacun des bras (6, 7) comprend une embase (8) constituée par un bloc support serré et bloqué sur l'arbre (5), au moyen d'une vis (9), et une partie antérieure formant racle (11) qui prolonge l'embase (8) et qui est fixée sur cette embase au moyen de vis (12).Device according to claim 1, characterized in that each of the arms (6, 7) comprises a base (8) constituted by a support block tight and locked on the shaft (5), by means of a screw (9), and a front part forming a doctor blade (11) which extends the base (8) and which is fixed to this base by means of screws (12). Dispositif suivant la revendication 2, caractérisé en ce que chaque racle (11) présente une face supérieure plane (11a) qui est inclinée par rapport à l'horizontale et qui se termine par une arête horizontale (11b), parallèle à l'axe du cylindre de coupe (2), située à proximité immédiate de la surface latérale de ce cylindre, cette arête (11b) faisant partie d'un dièdre à angle aigu constitué par la face supérieure (11a) et une face inférieure et antérieure (11c) qui est inclinée de manière que la partie extrême de chaque racle (11) soit effilée, et la face interne de chaque racle, c'est-à-dire celle qui est tournée vers le plan verticale de symétrie (P) et l'autre racle, est étagée et elle comprend, dans sa partie antérieure, une face interne antérieure plane (11f) qui est inclinée à la fois vers le bas et vers l'arrière, cette face antérieure inclinée (11f) étant délimitée, à sa partie supérieure, par une arête antérieure et supérieure (11g) contenue dans le plan de la face supérieure (11a), parallèle au plan vertical de symétrie (P) et se raccordant perpendiculairement à l'arête (11b), et par une autre arête supérieure (11h) également contenue dans le plan de la face supérieure (11a), faisant suite à l'arête antérieure (11g) et inclinée d'avant en arrière et vers l'extérieur de la racle (11), pour rejoindre une face verticale et transversale interne (11i) de la racle (11).Device according to claim 2, characterized in that each doctor blade (11) has a flat upper face (11a) which is inclined relative to the horizontal and which ends in a horizontal edge (11b), parallel to the axis of the cutting cylinder (2), located in the immediate vicinity of the lateral surface of this cylinder, this edge (11b) forming part of an acute angle dihedral constituted by the upper face (11a) and a lower and anterior face (11c) which is inclined so that the end part of each doctor blade (11) is tapered, and the internal face of each doctor blade, that is to say the one facing the vertical plane of symmetry (P) and the other doctor blade, is stepped and it comprises, in its front part, a flat front internal face (11f) which is inclined both downwards and backwards, this inclined front face (11f) being delimited, at its upper part , by an anterior and superior edge (11 g) contained in the plane of the upper face (11a), parallel to the vertical plane of symmetry (P) and connecting perpendicularly to the edge (11b), and by another upper edge (11h) also contained in the plane of the upper face (11a), following the anterior edge (11g) and inclined from front to back and towards the outside of the doctor blade (11), to join an internal vertical and transverse face (11i) of the doctor blade (11). Dispositif suivant la revendication 3, caractérisé en ce que la face antérieure inclinée interne (11f) de la racle (11) se raccorde à la face antérieure inclinée (11c) le long d'une arête (11j) qui, vue en plan, est inclinée d'avant en arrière, vers l'extérieur, par rapport au plan vertical de symétrie (P).Device according to claim 3, characterized in that the internal inclined front face (11f) of the doctor blade (11) is connected to the inclined front face (11c) along an edge (11j) which, seen in plan, is inclined from front to back, towards the outside, with respect to the vertical plane of symmetry (P). Dispositif de décorticage d'une nappe de carton ou matériau similaire sensiblement tel que décrit et représenté aux dessins annexés.Device for peeling a sheet of cardboard or similar material substantially as described and shown in the accompanying drawings.
EP91403499A 1990-12-26 1991-12-20 Apparatus for removing waste from cut sheets of cardboard and the like Expired - Lifetime EP0493229B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9016263A FR2671026B1 (en) 1990-12-26 1990-12-26 DEVICE FOR DECORTICATING A TABLECLOTH OF CARDBOARD OR SIMILAR MATERIAL.
FR9016263 1990-12-26

Publications (2)

Publication Number Publication Date
EP0493229A1 true EP0493229A1 (en) 1992-07-01
EP0493229B1 EP0493229B1 (en) 1995-05-17

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EP91403499A Expired - Lifetime EP0493229B1 (en) 1990-12-26 1991-12-20 Apparatus for removing waste from cut sheets of cardboard and the like

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US (1) US5303623A (en)
EP (1) EP0493229B1 (en)
JP (1) JPH04294999A (en)
DE (1) DE69109840T2 (en)
ES (1) ES2073713T3 (en)
FR (1) FR2671026B1 (en)
HK (1) HK143895A (en)

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ES2072199A2 (en) * 1993-06-21 1995-07-01 Salpe S A Improved device for removing offcuts from machines for cutting strips of paper or cardboard
FR2774628A1 (en) * 1998-02-10 1999-08-13 Komori Chambon DEVICE FOR DECORATING CUT CARDBOARD BLANKS
EP2671695A1 (en) * 2012-06-04 2013-12-11 Geo. M. Martin Company Scrap scraper
US9027737B2 (en) 2011-03-04 2015-05-12 Geo. M. Martin Company Scrubber layboy
US20160023369A1 (en) * 2013-03-08 2016-01-28 Bobst Mex Sa Waste stripping and cutting arrangement, cassette, unit and machine provided therewith

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US6012366A (en) * 1996-11-13 2000-01-11 Itox Supply Co., Ltd. Slitting mechanism of a card cutting machine
CH693169A5 (en) * 1999-06-01 2003-03-27 Bobst Sa Apparatus for adjusting the position between a waste ejector and a cutting cylinder.
DE10158502B4 (en) * 2001-11-28 2016-02-18 Roll Up GmbH Device for producing a micro-perforation in roller shutter bar webs
US6949059B2 (en) * 2002-09-18 2005-09-27 Winkler + Dunnebier, Ag Two cylinder one piece pin stripping device
US6866152B2 (en) * 2002-11-26 2005-03-15 Grumbach Gmbh & Co. Kg System and method to separate cardboard components from bulk waste paper

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GB750701A (en) * 1952-11-20 1956-06-20 Bobst Fils Sa J Improvements in or relating to waste paper, paper board and the like ejector apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2072199A2 (en) * 1993-06-21 1995-07-01 Salpe S A Improved device for removing offcuts from machines for cutting strips of paper or cardboard
FR2774628A1 (en) * 1998-02-10 1999-08-13 Komori Chambon DEVICE FOR DECORATING CUT CARDBOARD BLANKS
WO1999041047A1 (en) * 1998-02-10 1999-08-19 Komori-Chambon S.A. Device for peeling off cut out cardboard blanks
US9027737B2 (en) 2011-03-04 2015-05-12 Geo. M. Martin Company Scrubber layboy
EP2671695A1 (en) * 2012-06-04 2013-12-11 Geo. M. Martin Company Scrap scraper
US10967534B2 (en) 2012-06-04 2021-04-06 Geo. M. Martin Company Scrap scraper
US20160023369A1 (en) * 2013-03-08 2016-01-28 Bobst Mex Sa Waste stripping and cutting arrangement, cassette, unit and machine provided therewith

Also Published As

Publication number Publication date
FR2671026A1 (en) 1992-07-03
HK143895A (en) 1995-09-15
FR2671026B1 (en) 1995-08-04
JPH04294999A (en) 1992-10-19
EP0493229B1 (en) 1995-05-17
DE69109840T2 (en) 1995-12-21
ES2073713T3 (en) 1995-08-16
DE69109840D1 (en) 1995-06-22
US5303623A (en) 1994-04-19

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