EP1074353B1 - Universal waste removing tool - Google Patents
Universal waste removing tool Download PDFInfo
- Publication number
- EP1074353B1 EP1074353B1 EP00114755A EP00114755A EP1074353B1 EP 1074353 B1 EP1074353 B1 EP 1074353B1 EP 00114755 A EP00114755 A EP 00114755A EP 00114755 A EP00114755 A EP 00114755A EP 1074353 B1 EP1074353 B1 EP 1074353B1
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- European Patent Office
- Prior art keywords
- holes
- plate
- universal
- tool according
- frame
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 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
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- 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
- B26D7/1818—Means for removing cut-out material or waste by pushing out
Definitions
- the present invention relates to a universal tool for ejecting waste from a die-cutting press, including items such as paper or cardboard for the production of packaging.
- a universal tool for ejecting waste from a die-cutting press including items such as paper or cardboard for the production of packaging.
- Such a tool is described in document DE-U-8915577 which is the closest state of the art.
- these cutting presses include several stations, placed one after the other, including a feeder to supply the machine with cardboard sheets, in some executions a margin table arranging these sheets in a sheet, a press platinum cutting the sheets one by one in a given shape for produce box cutouts, an ejection station removing waste junk resulting from cutting, and finally a stacking receiving station cuts thus fashioned.
- the tool of the present invention finds its use.
- the plate elements worked by such machines each comprising a plurality of poses or cutouts that represent shapes and surfaces developed manufactured packaging.
- these poses are judiciously arranged and arranged on the surface offered by the sheet in the goal of using it best, it is generally not possible to avoid interstitial areas of waste that lie between the poses and that result essentially their particular forms. These are the surfaces interstitial which constitute the undesirable waste which should be removed from leaf.
- this sheet once cut is deposited on a perforated board, called lower ejection form, comprising a plurality openings. These openings are located next to the leaf waste and have a shape corresponding to these. Every waste can be extracted by pinching between two ejection needles mounted one on a tool upper mobile, and the other telescopic on a lower tool. In one vertical movement, these two tools remove in a single operation all leaf scraps.
- a perforated board called lower ejection form
- the waste ejection station may not have only one mobile upper tool pushing the waste through the openwork board.
- One way to make the eject tool is to use a flat surface, generally a wooden board, in which we will have fixed, needles corresponding to the waste to be ejected, needles of ejection which can be simply kinds of nails which one will have planted in the wooden board. Although it seems very economical, this solution becomes tedious and quickly expensive when it comes to meeting customer expectations, to prepare the machine for all kinds of work different which each require a specific tool.
- the ejection tool consists in using needles which can be fixed in an adjustable way to best suit to a whole range of different jobs.
- the tool in question is consisting of a rectangular frame and crosspieces connecting the side bars or longitudinal of the frame, so that these crosspieces, serving as support to the ejection needles, can be positioned at the waste locations to eject.
- Each ejection needle must be screwed onto an adjustable support radially able to rotate around a 360o periphery in order to be able to position it right next to the waste to be ejected.
- This embodiment has the disadvantage of requiring, for each ejection needle, assembly and adjustment of several constituent parts of its support.
- the press cutting can of course perform different work corresponding to several types and formats of cuts, meticulous position adjustment ejection tools depending on the work to be performed must be each time say again. If this tool has the advantage of being adaptable to any work by not having a single batch of parts, the placement of ejection needles represents on the other hand a task of adjustment which can be long and laborious depending on the complexity of the boxes to be cut and the waste they generate. Finally, the size and especially the relatively high cost price of this kind of tool requires rational use of the device; reason for which these ejection tools are generally dismantled after each work and reassembled in a new configuration for a new job, which the evidence takes a long time not compatible with the requirements of production sought.
- the object of the present invention is to remedy these drawbacks by providing a universal, above all economical ejection tool, which is simple design while remaining efficient and reliable. He must be able to be able ensure the ejection of any type of waste anywhere over the entire extent of the sheet and suitable for work covering the whole range of formats sheets that can be shaped with the type of platen press for which the ejection tool in question is provided. The time required for the preparation of this tool, for a given job, should be as short as possible. This ejection tool must also significantly reduce the number of operations and spare parts involved in the preparation of the tool, and must offer obvious ease when it comes to add, remove or move one or more of the organs ensuring ejection of waste.
- the present invention relates to an ejection tool in accordance with claim 1.
- FIG. 1 represents a schematic perspective view and in partial section of a universal ejection tool 1.
- the latter comprises a frame 2 formed by two longitudinal bars 3, 4, held firmly to two other side bars 5, 6. These bars are preferably of rectangular or square section.
- the upper face of the frame 2 serves as a support for an upper plate 10 perforated with a multitude of small holes 11.
- a lower plate 12 also perforated with a multitude of small holes 13 (FIG. 2) of the same diameter as the holes 11 of the upper sheet is fixed.
- the sheets 10 and 12 are identical and their dimensions are substantially equal to those of the frame 2.
- each sheet can for example be drilled with a number between 50,000 and 400,000 holes for a sheet surface located between 1 and 2 m 2 .
- these holes form for each sheet 10, 12, a frame such that the centers of any three adjacent holes form the vertices of an equilateral triangle one of the sides of which is parallel to one of the edges of the frame. 2.
- separation formed by a plurality of bands 17 are positioned on the edge between the two sheets 10, 12. These strips 17 each form an S which connects the two longitudinal bars 3, 4 of the frame 2. They are fixed only in their ends against the inner edges of these bars.
- the positioning and marking of the ejection tool 1 in the ejection station is done by means of one of the longitudinal bars and a stud centering 18 positioned on an axis A-A indicated in FIG. 1.
- This axis is located on the center line of the production machine and constitutes a reference line. All stations (introduction, cutting, ejection, etc ...) of this machine are aligned with respect to this axis, so that the different operations performed on the same plate element are always carried out in a perfect location.
- Figure 2 shows a partial vertical sectional view of the tool 1 along the center line A-A.
- the centering pin 18 is carefully fixed on the upper sheet 10 using a screw 19 anchored in the longitudinal bar 4.
- a bent sheet 20 is fixed by the screws 14 the along the side bar 5 under the lower sheet 12.
- This bent sheet 20 is equipped with gripping means 21 constituted by two openings which allow you to grab and pull tool 1 like a drawer out of the station ejection.
- two longitudinal supports 22, 23 are shown. which, although part of the ejection station, allow better understand how the ejection tool 1 is inserted into and held there.
- the support 23 is fixed; it serves as a benchmark against which the longitudinal bar 4 comes to lean.
- the support 22 is movable in the direction of the arrow 24, so as to tighten and firmly hold the tool 1 in the ejection station.
- FIG. 2 only an ejection needle 30 is illustrated such than introduced in tool 1.
- ejection needle 30 is illustrated such than introduced in tool 1.
- the height of each of these needles ejection 30 is smaller than the height of the bent sheets 20, 25 mounted on frame 2. Indeed, one of the aims of the bent sheets 20, 25 is also to ability to place tool 1 on a flat surface without ejection needles 30 are only lifted once positioned in the holes 11, 13.
- support members are fixed against the underside of the ejection tool, next to the lost surfaces.
- a body support 28 is shown in section.
- This support member 28 comprises a stud 26 in compressible foam glued against a magnetic surface 27 which, thanks to the sheet 12 advantageously machined from a ferromagnetic material, can be positioned at will over the entire extent of this sheet.
- Another benefit of this fixing system lies in the fact that these support members 28 can be easily adjusted if necessary, and retrieved for use future when preparing for another job.
- a variant of the method of fixing this support member 28 against the lower sheet 12 consists of equipping said member with at least two nails 29 which, in passing through the holes 13 of the lower sheet 12, prevent slipping or any other inadvertent movement of the support member 28.
- the reliability ejector tool is further improved without wearing prejudice to the necessary time that should be allowed for its preparation.
- Figure 3 shows a schematic view in vertical section of a part of the universal ejection tool.
- the ejector members 40 can be simply formed of the same elements as those which already constitute the support members 28, at the difference except that instead of using a pad 26 of compressible foam, we prefer the use of a stud 41 of rigid foam which is not very compressible.
- FIG 3 In Figure 3 are shown in section, once from the front and a times in profile, two ejector members 40 mounted as they should be on the face lower of the perforated sheet 12.
- the construction of these ejector members 40 constitutes a second possible variant which differs somewhat from that preferentially used for organs support 28.
- two strong magnets 42 are rigidly fixed against a steel plate 43 itself fitted against the stud 41.
- nails 29 cross the ejector member 40. The aim of these nails is identical to the one previously described for the organs support 28.
- the stud 41 of the ejector members 40 is slightly set back of two of the edges of the steel plate 43 which constitutes the base of the member ejector 40.
- This withdrawal t facilitates the exact positioning of the edge of the stud 41 by compared to the perforated board of the ejection station.
- This characteristic facilitates the installation of the ejector members 40 when these must be positioned as close as possible to the edges of the surfaces to be ejected.
- the size of openings of the perforated board, used for positioning the organs ejector and ejection needles differs slightly from the size of the waste to eject, so that said withdrawal t compensates for this slight difference without having to worry about it.
- FIG. 4 is a perspective view of an ejection needle 30.
- this needle is not telescopic but looks like a hook formed of a rod bent once at right angles, then a second time in the same direction at an angle ⁇ preferably between 87o and 90o.
- the folding of this rod respectively determines a first long branch 31, a bend 32, a section 33, a second bend 34, and finally a second branch 35 shorter than the first.
- the length of the second branch 35 is very slightly greater than the distance which separates the upper and lower plates 10, 12, while the length of the first branch 31 really constitutes the sting that will push towards the down the waste to be separated from the plate element.
- the diameter of the rod the ejection needle is slightly smaller than the diameter of the holes 11, 13 of so that these needles can be easily inserted manually.
- the ejection needle 30 remains there maintained by the relative elasticity of the branches 31, 35, not parallel, which naturally try to move away from each other.
- one end 36 of branch 35 is bevelled on the one hand, and the second elbow 34 is milled with a flat oblique on the other hand.
- the strips 17 do not constitute a obstacle for the ejection needles 30 which must be placed in specific locations. Indeed, in the case where one of the bands 17 passes exactly in front of a hole which must be crossed by one of the ejection needles, this needle can safely move band 17 out of its way to be able to be correctly inserted into the ejection tool.
- the preferred embodiment of the ejection needles in no way exclude another way of making them.
- the manufacture of such a needle could consist of not using that a straight rod, along which a spring strip would be attached and a stop member at the upper end of this rod. This organ would prevent the rod from being inserted too deep into the ejection tool, so that the spring strip would block it in the vertical pair of holes (11) of the upper sheet (10) and holes (13) of the lower sheet (12) thanks to its elastic effect.
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- 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)
- Harvesting Machines For Specific Crops (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
- Making Paper Articles (AREA)
- Processing Of Solid Wastes (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
La présente invention a pour objet un outil universel d'éjection des déchets d'une presse à découper des éléments en plaque, notamment des éléments tels que du papier ou du carton destiné à la production d'emballages. Un tel outil est décrit dans le document DE-U-8915577 qui constitue l'état de la technique le plus proche.The present invention relates to a universal tool for ejecting waste from a die-cutting press, including items such as paper or cardboard for the production of packaging. Such a tool is described in document DE-U-8915577 which is the closest state of the art.
Généralement, ces presses à découper comprennent plusieurs stations, placées les unes à la suite des autres, dont notamment un margeur permettant d'alimenter la machine en feuilles de carton, dans certaines exécutions une table de marge disposant ces feuilles en nappe, une presse à platine découpant les feuilles une à une suivant une forme donnée pour produire des découpes de boítes, une station d'éjection retirant les déchets indésirables résultant du découpage, et enfin une station de réception en piles des découpes ainsi façonnées.Generally, these cutting presses include several stations, placed one after the other, including a feeder to supply the machine with cardboard sheets, in some executions a margin table arranging these sheets in a sheet, a press platinum cutting the sheets one by one in a given shape for produce box cutouts, an ejection station removing waste junk resulting from cutting, and finally a stacking receiving station cuts thus fashioned.
C'est dans la station d'éjection des déchets de la presse à découper que l'outil de la présente invention trouve son utilisation. Les éléments en plaque travaillés par de telles machines, comportent chacun d'eux une pluralité de poses ou découpes qui représentent les formes et les surfaces développées des emballages fabriqués. Bien que ces poses soient judicieusement disposées et arrangées sur la surface offerte par la feuille dans le but de l'utiliser au mieux, il n'est généralement pas possible d'éviter les zones interstitielles de déchets qui se situent entre les poses et qui résultent essentiellement de leurs formes particulières. Ce sont ces surfaces interstitielles qui constituent les déchets indésirables qu'il convient de retirer de la feuille.It's in the press waste ejection station at cut out that the tool of the present invention finds its use. The plate elements worked by such machines, each comprising a plurality of poses or cutouts that represent shapes and surfaces developed manufactured packaging. Although these poses are judiciously arranged and arranged on the surface offered by the sheet in the goal of using it best, it is generally not possible to avoid interstitial areas of waste that lie between the poses and that result essentially their particular forms. These are the surfaces interstitial which constitute the undesirable waste which should be removed from leaf.
A cet effet, cette feuille une fois découpée se dépose sur une planche ajourée, appelée forme inférieure d'éjection, comportant une pluralité d'ouvertures. Ces ouvertures sont situées en regard des déchets de la feuille et ont une forme correspondant à ces derniers. Chaque déchet peut être extrait par pincement entre deux aiguilles d'éjection montées les unes sur un outil supérieur mobile, et les autres télescopiques sur un outil inférieur. Dans un mouvement vertical, ces deux outils retirent en une seule opération tous les déchets de la feuille. Une telle station d'éjection est décrite plus en détail dans le brevet US 3,786,731.For this purpose, this sheet once cut is deposited on a perforated board, called lower ejection form, comprising a plurality openings. These openings are located next to the leaf waste and have a shape corresponding to these. Every waste can be extracted by pinching between two ejection needles mounted one on a tool upper mobile, and the other telescopic on a lower tool. In one vertical movement, these two tools remove in a single operation all leaf scraps. Such an ejection station is described in more detail in US Patent 3,786,731.
Plus simplement, la station d'éjection des déchets peut ne comporter qu'un seul outil supérieur mobile poussant les déchets au travers de la planche ajourée. More simply, the waste ejection station may not have only one mobile upper tool pushing the waste through the openwork board.
Une façon de réaliser l'outil d'éjection consiste à utiliser une surface plane, généralement une planche en bois, dans laquelle on aura fixé, aux emplacements correspondant aux déchets à éjecter, des aiguilles d'éjection qui peuvent être simplement des sortes de clous que l'on aura plantés dans la planche en bois. Bien que paraissant très économique, cette solution devient fastidieuse et vite onéreuse lorsqu'il s'agit, pour répondre aux attentes de la clientèle, de préparer la machine pour toutes sortes de travaux différents qui nécessitent chacun un outil spécifique.One way to make the eject tool is to use a flat surface, generally a wooden board, in which we will have fixed, needles corresponding to the waste to be ejected, needles of ejection which can be simply kinds of nails which one will have planted in the wooden board. Although it seems very economical, this solution becomes tedious and quickly expensive when it comes to meeting customer expectations, to prepare the machine for all kinds of work different which each require a specific tool.
Un autre mode de réalisation de l'outil d'éjection consiste à utiliser des aiguilles qui peuvent être fixées de façon réglable pour convenir au mieux à toute une gamme de travaux différents. A cet effet, l'outil en question est constitué d'un cadre rectangulaire et de traverses reliant les barres latérales ou longitudinales du cadre, de façon à ce que ces traverses, servant de support aux aiguilles d'éjection, puissent être positionnées aux endroits des déchets à éjecter. Chaque aiguille d'éjection doit être vissée sur un support réglable radialement pouvant tourner sur un pourtour de 360º afin de pouvoir la positionner bien en regard du déchet à éjecter. Ce mode de réalisation a l'inconvénient de nécessiter, pour chaque aiguille d'éjection, l'assemblage et le réglage de plusieurs pièces constitutives de son support. De plus, la presse à découper pouvant bien entendu réaliser des travaux différents correspondant à plusieurs genres et formats de découpes, le réglage minutieux de la position des outils d'éjection en fonction des travaux à réaliser devra être à chaque fois répété. Si cet outil possède l'avantage d'être adaptable à tout travail en n'ayant qu'un seul et même lot de pièces, la mise en place des aiguilles d'éjection représente par contre une tâche de réglage pouvant être longue et laborieuse selon la complexité des boítes à découper et des déchets qu'elles engendrent. Enfin, l'encombrement et surtout le prix de revient relativement élevé de ce genre d'outil nécessite une utilisation rationnelle du dispositif ; raison pour laquelle ces outils d'éjection sont généralement démontés après chaque travail et remontés dans une nouvelle configuration pour un nouveau travail, ce qui à l'évidence prend un temps important non compatible avec les exigences de production recherchées.Another embodiment of the ejection tool consists in using needles which can be fixed in an adjustable way to best suit to a whole range of different jobs. For this purpose, the tool in question is consisting of a rectangular frame and crosspieces connecting the side bars or longitudinal of the frame, so that these crosspieces, serving as support to the ejection needles, can be positioned at the waste locations to eject. Each ejection needle must be screwed onto an adjustable support radially able to rotate around a 360º periphery in order to be able to position it right next to the waste to be ejected. This embodiment has the disadvantage of requiring, for each ejection needle, assembly and adjustment of several constituent parts of its support. In addition, the press cutting can of course perform different work corresponding to several types and formats of cuts, meticulous position adjustment ejection tools depending on the work to be performed must be each time say again. If this tool has the advantage of being adaptable to any work by not having a single batch of parts, the placement of ejection needles represents on the other hand a task of adjustment which can be long and laborious depending on the complexity of the boxes to be cut and the waste they generate. Finally, the size and especially the relatively high cost price of this kind of tool requires rational use of the device; reason for which these ejection tools are generally dismantled after each work and reassembled in a new configuration for a new job, which the evidence takes a long time not compatible with the requirements of production sought.
Une autre solution possible consiste à ne pas séparer les déchets en cours de production mais à effectuer cette opération manuellement en reprenant le produit façonné délivré par la presse à platine. Cette solution, très astreignante pour les moyennes et grandes séries, est économiquement inconcevable dans les pays industrialisés pour des raisons évidentes de coût de la main d'oeuvre. De plus, le temps que nécessite cette tâche serait totalement disproportionné par rapport au temps mis par une machine pour créer d'un jet le produit désiré. Enfin, l'extraction manuelle des déchets pose différents problèmes tels que des risques de déchirures, des risques de séparations intempestives des poses façonnées, des problèmes liés à la manutention des piles de feuilles, et enfin des problèmes d'hygiène pour des feuilles destinées à des emballages de produits médicaux ou alimentaires.Another possible solution is not to separate the waste during production but to do this manually using the shaped product delivered by the platen press. This solution, very demanding for medium and large series, is economically inconceivable in industrialized countries for obvious cost reasons of the work force. In addition, the time required for this task would be totally disproportionate to the time taken by a machine to create the desired product with a jet. Finally, the manual removal of waste poses different problems such as risks of tears, risks of untimely separations of shaped poses, problems related to handling stacks of sheets, and finally hygiene problems for sheets for packaging of medical or food products.
La présente invention a pour but de remédier à ces inconvénients en fournissant un outil universel d'éjection avant tout économique, qui soit de conception simple tout en restant efficace et fiable. Il doit pouvoir être capable d'assurer l'éjection de tout type de déchets où que ce soit sur toute l'étendue de la feuille et convenir aux travaux couvrant toute la gamme de formats de feuilles qu'il est possible de façonner avec le type de presse à platine pour lequel l'outil d'éjection en question est prévu. Le temps nécessaire à la préparation de cet outil, pour un travail donné, doit être aussi court que possible. Cet outil d'éjection doit également diminuer de manière significative le nombre de manoeuvres et de pièces détachées intervenant dans la phase de préparation de l'outil, et doit offrir une aisance manifeste lorsqu'il s'agit d'ajouter, d'enlever ou de déplacer un ou plusieurs des organes assurant l'éjection des déchets.The object of the present invention is to remedy these drawbacks by providing a universal, above all economical ejection tool, which is simple design while remaining efficient and reliable. He must be able to be able ensure the ejection of any type of waste anywhere over the entire extent of the sheet and suitable for work covering the whole range of formats sheets that can be shaped with the type of platen press for which the ejection tool in question is provided. The time required for the preparation of this tool, for a given job, should be as short as possible. This ejection tool must also significantly reduce the number of operations and spare parts involved in the preparation of the tool, and must offer obvious ease when it comes to add, remove or move one or more of the organs ensuring ejection of waste.
A cet effet, la présente invention a pour objet un outil d'éjection conforme à ce qu'énonce la revendication 1.To this end, the present invention relates to an ejection tool in accordance with claim 1.
L'invention sera mieux comprise à l'étude d'un mode de réalisation
pris à titre nullement limitatif et illustré par les figures annexées dans
lesquelles:
La figure 1 représente une vue schématique en perspective et en
coupe partielle d'un outil universel d'éjection 1. Ce dernier comprend un cadre
2 formé de deux barres longitudinales 3, 4, maintenues fermement à deux
autres barres latérales 5, 6. Ces barres sont préférentiellement de section
rectangulaire ou carrée. La face supérieure du cadre 2 sert de support à une
tôle supérieure 10 perforée d'une multitude de petits trous 11. Contre la face
inférieure du cadre 2, une tôle inférieure 12 également perforée d'une multitude
de petits trous 13 (figure 2) de même diamètre que les trous 11 de la tôle supérieure est fixée. Les
tôles 10 et 12 sont identiques et leurs dimensions sont sensiblement égales à
celles du cadre 2. Elles sont fixées sur ce dernier avec des vis traversantes 14,
pouvant être noyées dans la tôle 10, et des écrous 15 sur les barres latérales
5, 6 du cadre 2, et avec des vis 16 serrées dans des taraudages borgnes pour
les barres longitudinales 3, 4. Tous les trous 11 de la tôle supérieure et 13 de la tôle inférieure se font rigoureusement
face et sont donc parfaitement alignés par paires sur des droites verticales
(figure 2). Sur la figure schématique 1, ces trous sont volontairement dessinés
dans des proportions exagérées. En réalité, chaque tôle peut par exemple être
percée d'un nombre compris entre 50'000 et 400'000 trous pour une surface de
tôle située entre 1 et 2 m2. Préférentiellement, ces trous forment pour chaque
tôle 10, 12, une trame telle que les centres de trois trous quelconques
adjacents forment les sommets d'un triangle équilatéral dont l'un des côtés de
ce triangle est parallèle à l'un des bords du cadre 2.FIG. 1 represents a schematic perspective view and in partial section of a universal ejection tool 1. The latter comprises a
Afin d'éviter toute déformation des tôles, des organes de
séparation formés d'une pluralité de bandes 17 sont positionnés sur la tranche
entre les deux tôles 10, 12. Ces bandes 17 forment chacune un S qui relie les
deux barres longitudinales 3, 4 du cadre 2. Elles sont fixées seulement dans
leurs extrémités contre les bords intérieurs de ces barres.In order to avoid any deformation of the sheets,
separation formed by a plurality of
Le positionnement et le repérage de l'outil d'éjection 1 dans la station d'éjection se fait au moyen d'une des barres longitudinales et d'un plot de centrage 18 positionné sur un axe A-A indiqué dans la figure 1. Cet axe virtuel se trouve sur la ligne médiane de la machine de production et constitue une ligne de référence. Toutes les stations (introduction, découpage, éjection, etc...) de cette machine sont alignées par rapport à cet axe, de sorte que les différentes opérations effectuées sur un même élément en plaque sont toujours réalisées dans un parfait repérage.The positioning and marking of the ejection tool 1 in the ejection station is done by means of one of the longitudinal bars and a stud centering 18 positioned on an axis A-A indicated in FIG. 1. This axis is located on the center line of the production machine and constitutes a reference line. All stations (introduction, cutting, ejection, etc ...) of this machine are aligned with respect to this axis, so that the different operations performed on the same plate element are always carried out in a perfect location.
La figure 2 montre une vue en coupe partielle verticale de l'outil
d'éjection 1 selon la ligne médiane A-A. Le plot de centrage 18 est
soigneusement fixé sur la tôle supérieure 10 à l'aide d'une vis 19 encrée dans
la barre longitudinale 4. Une tôle coudée 20 se trouve fixée par les vis 14 le
long de la barre latérale 5 sous la tôle inférieure 12. Cette tôle coudée 20 est
équipée de moyens de préhension 21 constitués par deux ouvertures qui
permettent de saisir et de tirer l'outil 1 comme un tiroir hors de la station
d'éjection. Sur la figure 2, sont représentés deux supports longitudinaux 22, 23
qui, bien que faisant partie de la station d'éjection, permettent de mieux
comprendre la manière dont l'outil d'éjection 1 y est introduit et y est maintenu.
Le support 23 est fixe ; il sert de repère contre lequel la barre longitudinale 4
vient s'appuyer. Le support 22 est quant à lui mobile dans le sens de la flèche
24, de façon à serrer et maintenir fermement l'outil 1 dans la station d'éjection.
A l'opposé de la tôle coudée 20, se trouve une autre tôle 25 dont les
dimensions et les moyens de fixation sont identiques à ceux de la première tôle
coudée 20.Figure 2 shows a partial vertical sectional view of the tool
1 along the center line A-A. The centering
Sur la figure 2, seule une aiguille d'éjection 30 est illustrée telle
qu'introduite dans l'outil 1. Pour des questions fonctionnelles de cohérence
entre la taille des trous 11 et l'épaisseur de l'outil 1, aucune aiguille d'éjection
n'a été représentée sur la figure 1. La hauteur de chacune de ces aiguilles
d'éjection 30 est plus petite que la hauteur des tôles coudées 20, 25 montées
sur le cadre 2. En effet, l'un des buts des tôles coudées 20, 25 est aussi de
pouvoir déposer l'outil 1 sur une surface plane sans que les aiguilles d'éjection
30 ne se soulèvent une fois positionnées dans les trous 11, 13.In FIG. 2, only an
Durant la phase d'éjection des déchets par les aiguilles 30, le
processus nécessite de maintenir la feuille bien à plat contre la planche
ajourée. A cet effet, des organes d'appui sont fixés contre la face inférieure de
l'outil d'éjection, à côté des surfaces perdues. Sur la figure 2, un tel organe
d'appui 28 y est représenté en coupe. Cet organe d'appui 28 comprend un plot
26 en mousse compressible collé contre une surface aimantée 27 qui, grâce à
la tôle 12 avantageusement usinée dans une matière ferromagnétique, peut
être positionné à volonté sur toute l'étendue de cette tôle. Un autre avantage
de ce système de fixation réside dans le fait que ces organes d'appui 28
peuvent être aisément ajustés en cas de besoin, et récupérés pour un usage
futur lors de la préparation d'un autre travail.During the ejection phase of the waste by the
Une variante du mode de fixation de cet organe d'appui 28 contre
la tôle inférieure 12 consiste à équiper ledit organe d'au moins deux clous 29 qui, en
traversant les trous 13 de la tôle inférieure 12, empêchent tout glissement ou tout autre
déplacement intempestif de l'organe d'appui 28. De cette manière, la fiabilité
de l'outil d'éjection s'en trouve encore améliorée sans pour autant porter
préjudice au temps nécessaire qu'il convient d'accorder pour sa préparation.
Pour garantir un parfait assemblage entre un tel organe d'appui 28, équipé de
clous 29, et la tôle inférieure perforée 12, il est alors nécessaire que la distance entre les
clous 29 soit égale à un multiple du pas des trous 13 uniformément répartis
dans la tôle inférieure 12.A variant of the method of fixing this
La figure 3 représente une vue schématique en coupe verticale
d'une partie de l'outil universel d'éjection. Lorsqu'il s'agit d'éjecter des déchets
qui ont une surface suffisamment importante, il devient plus judicieux d'utiliser
des organes éjecteur 40 en lieu et place des aiguilles d'éjection 30. En effet, de
part leur petite taille, ces dernières sont plus particulièrement utiles lorsqu'il
s'agit d'ôter de petits déchets, alors que de plus gros organes éjecteur 40 sont
plus adéquats lorsqu'il s'agit d'éjecter de grands déchets ; comme par exemple
tout le contour d'une feuille dont on veut se séparer du reste des poses qui y
sont découpées.Figure 3 shows a schematic view in vertical section
of a part of the universal ejection tool. When it comes to ejecting waste
which have a sufficiently large surface, it becomes more judicious to use
A cet effet, les organes éjecteur 40 peuvent être simplement formés
des mêmes éléments que ceux qui constituent déjà les organes d'appui 28, à la
différence près qu'au lieu d'utiliser un plot 26 en mousse compressible, on
préférera l'emploi d'un plot 41 en mousse rigide peu compressible.For this purpose, the
Sur la figure 3 sont représentés en coupe, une fois de face et une
fois de profil, deux organes éjecteur 40 montés comme il se doit sur la face
inférieure de la tôle 12 perforée. La construction de ces organes éjecteur 40,
tels qu'illustrés dans cette figure, constitue une seconde variante possible qui
diffère quelque peu de celle préférentiellement utilisée pour les organes
d'appui 28. Afin d'augmenter la force de cohésion de l'organe éjecteur 41
contre la tôle 12, deux puissants aimants 42 sont rigidement fixés contre une
plaque d'acier 43 elle-même rapportée contre le plot 41. Dans un mode de
réalisation préféré, des clous 29 traverses l'organe éjecteur 40. Le but visé par
ces clous est identique à celui qui a été décrit précédemment pour les organes
d'appui 28.In Figure 3 are shown in section, once from the front and a
times in profile, two
Le plot 41 des organes éjecteur 40 se trouve légèrement en retrait
de deux des bords de la plaque d'acier 43 qui constitue l'embase de l'organe
éjecteur 40. Ce retrait t facilite le positionnement exact du bord du plot 41 par
rapport à la planche ajourée de la station d'éjection. Cette caractéristique
facilite la pose des organes éjecteur 40 lorsque ceux-ci doivent être
positionnés au plus près des bords des surfaces à éjecter. En effet, la taille des
ouvertures de la planche ajourée, utilisée pour le positionnement des organes
éjecteur et des aiguilles d'éjection, diffère légèrement de la taille des déchets à
éjecter, si bien que ledit retrait t permet de compenser cette légère différence
sans devoir s'en soucier.The
La figure 4 représente en perspective une aiguille d'éjection 30.
Simple à réaliser, cette aiguille n'est pas télescopique mais ressemble à un
crochet formé d'une tige pliée une première fois à angle droit, puis une
seconde fois dans le même sens à un angle α préférentiellement compris entre
87º et 90º. Le pliage de cette tige détermine respectivement une première
longue branche 31, un coude 32, un tronçon 33, un deuxième coude 34, et
finalement une seconde branche 35 plus courte que la première. La longueur
de la seconde branche 35 est très légèrement supérieure à la distance qui
sépare les tôles supérieure et inférieure 10, 12, alors que la longueur de la
première branche 31 constitue véritablement l'aiguillon qui poussera vers le
bas les déchets à séparer de l'élément en plaque. Le diamètre de la tige de
l'aiguille d'éjection est légèrement inférieur au diamètre des trous 11, 13 de
façon à ce que ces aiguilles puissent y être aisément introduites manuellement.
Une fois placée au travers de l'outil d'éjection 1, l'aiguille d'éjection 30 y reste
maintenue par l'élasticité relative des branches 31, 35, non parallèles, qui
naturellement tentent de s'écarter l'une de l'autre. Pour faciliter l'introduction de
ces aiguilles au travers des trous 11, 13, une extrémité 36 de la branche 35 est
taillée en biseau d'une part, et le deuxième coude 34 est fraisé d'un plat
oblique d'autre part.FIG. 4 is a perspective view of an
Avantageusement, grâce à la souplesse des organes de séparation
des tôles supérieure et inférieure 10, 12, les bandes 17 ne constituent pas un
obstacle pour les aiguilles d'éjection 30 qui doivent être placées en des
endroits précis. En effet, dans le cas où une des bandes 17 passe exactement
en face d'un trou qui doit être traversé par une des aiguilles d'éjection, cette
aiguille peut sans aucun problème écarter la bande 17 de son chemin pour
pouvoir être correctement introduite dans l'outil d'éjection.Advantageously, thanks to the flexibility of the separation members
upper and
Une autre solution possible pour éviter toute déformation des tôles
perforées supérieure et inférieure 10, 12, serait de remplacer les bandes 17 par des bandes rectilignes
ou des plaques de mousse rigide en PVC par exemple. L'introduction des
aiguilles d'éjection 30 pourrait, dans ce cas, transpercer facilement ladite
mousse rigide.Another possible solution to avoid any deformation of the sheets
perforated upper and lower 10, 12, would replace the
Dans la présente description, le mode de réalisation préféré des aiguilles d'éjection n'exclut nullement une autre manière de les confectionner. Par exemple, la fabrication d'une telle aiguille pourrait consister à n'utiliser qu'une tige droite, le long de laquelle y serait rapportée une lamelle ressort et un organe d'arrêt à l'extrémité supérieure de cette tige. Cet organe empêcherait d'introduire la tige trop profondément dans l'outil d'éjection, alors que la lamelle ressort permettrait de la bloquer dans la paire verticale de trous (11) de la tôle supérieure (10) et de trous (13) de la tôle inférieure (12) grâce à son effet élastique.In the present description, the preferred embodiment of the ejection needles in no way exclude another way of making them. For example, the manufacture of such a needle could consist of not using that a straight rod, along which a spring strip would be attached and a stop member at the upper end of this rod. This organ would prevent the rod from being inserted too deep into the ejection tool, so that the spring strip would block it in the vertical pair of holes (11) of the upper sheet (10) and holes (13) of the lower sheet (12) thanks to its elastic effect.
De nombreuses améliorations peuvent être apportées à cet outil d'éjection dans le cadre des revendications.Many improvements can be made to this tool within the scope of the claims.
Claims (10)
- Universal stripping tool (1) for the waste from a diecutting press for cutting plate-like workpieces, particularly for a press for cutting plate-like workpieces such as paper or cardboard intended for the production of packaging, comprising a frame (2), the upper part of which is equipped with an upper plate (10) perforated with a plurality of holes (11) uniformly distributed over its entire surface, while the lower part is provided with a lower plate (12) identical to the upper plate (10) and of substantially identical dimensions to those of the frame (2), said lower plate (12) also being perforated with a plurality of holes (13) of the same diameter as the holes (11) of the upper plate (10), which are perfectly aligned with the holes (11) of the upper plate (10) in pairs on vertical straight lines, said plates (10, 12) being separated in the inner space of the frame (2) by a separating means, the vertical pairs of holes (11, 13) being traversable by stripping pins (30), which are simply held therein by a spring effect.
- Universal stripping tool according to claim 1, characterised in that the separating means consists of a plurality of strips (17) positioned on edge and held by their ends against the edges of the frame (2).
- Universal stripping tool according to claim 1, characterised in that one of the plates (10, 12) is provided with a centring block (18) fixed on an axis (A-A) which forms a longitudinal reference axis on the diecutting press.
- Universal stripping tool according to claim 1, characterised in that the frame (2) is equipped, in its lower part, with feet, the length of which is greater than that of the stripping pins (30), and in that said feet are formed by bent plates (20, 25), at least one of which is provided with gripper means (21).
- Universal stripping tool according to claim 1 comprising stripping pins (30), characterised in that each stripping pin (30) comprises two arms (31, 35) formed from a single bent rod, said rod being bent once at a right angle and then a second time in the same direction at an angle less than 90° so that said stripping pin (30) can be introduced in one operation into two vertical pairs of holes (11, 13) and remain held therein by the relative elasticity of the two arms (31, 35), the ends and certain angular parts of the stripping pin (30) being bevelled.
- Universal stripping tool according to claim 1, characterised in that the lower plate (12) is formed by a ferromagnetic material which on the one hand enables support means (28) comprising a block (26) of compressible foam coated with a magnetised surface (27) to stick against said plate (12), and, on the other hand, enables stripper means (40) comprising a block (41) of relatively incompressible material coated with a steel plate (43) against which at least one magnet (42) is attached, to stick against said lower plate (12).
- Universal stripping tool according to claim 6, characterised in that the block (41) is situated on the steel plate (43) slightly offset (t) with respect to at least two of its edges.
- Universal stripping tool according to claim 6 comprising support means (28) and/or stripper means (40), characterised in that the support means (28) and/or the stripper means (40) are each provided with at least two nails (29) which, by means of the corresponding holes (13) of the lower plate (12), extend through the said plate (12) so as to prevent any possible slip of the means in question (28, 40) on the said plate (12).
- Universal stripping tool according to claim 1, characterised in that the holes (11, 13) form for each plate (10, 12) a field such that the centres of any three adjacent holes (11, 13) form the apices of an equilateral triangle one of the sides of which is parallel to one of the edges of the frame (2).
- Universal stripping tool according to claim 1, characterised in that the frame (2) has a format corresponding to the maximum production format possible with the said platen press, and in that the pairs of holes (11) in the upper plate (10) and holes (13) in the lower plate (12) are so arranged that each waste item resulting from any cut plate-like workpiece can be removed by at least one stripping pin (30).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK00114755T DK1074353T3 (en) | 1999-08-02 | 2000-07-10 | Universal tool for waste disposal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH01417/99A CH693502A5 (en) | 1999-08-02 | 1999-08-02 | universal ejection tool. |
CH141799 | 1999-08-02 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1074353A2 EP1074353A2 (en) | 2001-02-07 |
EP1074353A3 EP1074353A3 (en) | 2003-02-05 |
EP1074353B1 true EP1074353B1 (en) | 2004-08-11 |
Family
ID=4209972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00114755A Expired - Lifetime EP1074353B1 (en) | 1999-08-02 | 2000-07-10 | Universal waste removing tool |
Country Status (14)
Country | Link |
---|---|
US (1) | US6733430B1 (en) |
EP (1) | EP1074353B1 (en) |
JP (1) | JP4041270B2 (en) |
KR (1) | KR100387152B1 (en) |
CN (1) | CN1158168C (en) |
AT (1) | ATE273109T1 (en) |
AU (1) | AU773272B2 (en) |
BR (1) | BR0003342A (en) |
CA (1) | CA2314024C (en) |
CH (1) | CH693502A5 (en) |
DE (1) | DE60012833T2 (en) |
DK (1) | DK1074353T3 (en) |
ES (1) | ES2226667T3 (en) |
TW (1) | TW457139B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH693787A5 (en) | 1999-10-26 | 2004-02-13 | Bobst Sa | A process for preparing a shaping tools system, setting table for implementing this method and set of elements to prepare a higher form ejection. |
DE102007029408A1 (en) | 2007-06-26 | 2009-06-04 | Heidelberger Druckmaschinen Ag | Tool for sheet punching and embossing machine |
DE202007017069U1 (en) | 2007-06-26 | 2008-05-29 | Heidelberger Druckmaschinen Ag | Tool for sheet punching and embossing machine |
DE102008034764A1 (en) | 2008-07-25 | 2010-01-28 | Heidelberger Druckmaschinen Ag | Tool for processing perforated molds in processing machine, particularly die cutting and embossing machine, has individual square shaped base body provided with milled edge |
DE102013006348A1 (en) * | 2013-04-12 | 2014-10-16 | Heidelberger Druckmaschinen Ag | Upper tool, processing station and method for breaking out |
DE102014003294A1 (en) | 2014-03-07 | 2015-09-10 | Masterwork Machinery Co., Ltd. | Stripping tool for a punching machine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH530850A (en) * | 1971-07-13 | 1972-11-30 | Bobst Fils Sa J | Press for cutting sheet material |
US3786737A (en) * | 1972-07-17 | 1974-01-22 | Polaroid Corp | Photographic flash assembly |
US4452595A (en) * | 1982-01-18 | 1984-06-05 | Federal Paper Board Company, Inc. | Stripper apparatus for paperboard blanks |
DE8915577U1 (en) * | 1989-08-26 | 1990-10-18 | Alfred Linden KG, 5882 Meinerzhagen | Stripping tool and device for equipping a stripping tool in and for a punching machine |
AU673611B2 (en) * | 1993-05-15 | 1996-11-14 | Dirk Emrich | Device, clamping tool and process for breaking away cuttings when cutting out blanks from cardboard |
US5529565A (en) * | 1994-01-18 | 1996-06-25 | Oetlinger; Frank E. | Presser assembly |
CH691035A5 (en) * | 1995-04-18 | 2001-04-12 | Bobst Sa | Tool for machine cutting of plate members, and associated equipment. |
CH690844A5 (en) * | 1995-08-04 | 2001-02-15 | Bobst Sa | blank separating equipment within a machine for cutting plate-like workpieces. |
-
1999
- 1999-08-02 CH CH01417/99A patent/CH693502A5/en not_active IP Right Cessation
-
2000
- 2000-07-07 TW TW089113505A patent/TW457139B/en not_active IP Right Cessation
- 2000-07-10 DE DE60012833T patent/DE60012833T2/en not_active Expired - Lifetime
- 2000-07-10 AT AT00114755T patent/ATE273109T1/en not_active IP Right Cessation
- 2000-07-10 ES ES00114755T patent/ES2226667T3/en not_active Expired - Lifetime
- 2000-07-10 EP EP00114755A patent/EP1074353B1/en not_active Expired - Lifetime
- 2000-07-10 DK DK00114755T patent/DK1074353T3/en active
- 2000-07-13 CA CA002314024A patent/CA2314024C/en not_active Expired - Fee Related
- 2000-07-26 AU AU48839/00A patent/AU773272B2/en not_active Ceased
- 2000-07-27 JP JP2000226401A patent/JP4041270B2/en not_active Expired - Fee Related
- 2000-07-29 KR KR10-2000-0043992A patent/KR100387152B1/en not_active IP Right Cessation
- 2000-07-31 CN CNB001208160A patent/CN1158168C/en not_active Expired - Fee Related
- 2000-08-02 BR BR0003342-1A patent/BR0003342A/en not_active IP Right Cessation
- 2000-08-02 US US09/632,025 patent/US6733430B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ES2226667T3 (en) | 2005-04-01 |
TW457139B (en) | 2001-10-01 |
CN1158168C (en) | 2004-07-21 |
DK1074353T3 (en) | 2004-12-20 |
KR100387152B1 (en) | 2003-06-12 |
AU773272B2 (en) | 2004-05-20 |
CA2314024C (en) | 2004-08-03 |
DE60012833D1 (en) | 2004-09-16 |
JP4041270B2 (en) | 2008-01-30 |
DE60012833T2 (en) | 2005-09-01 |
BR0003342A (en) | 2001-03-13 |
JP2001062788A (en) | 2001-03-13 |
CH693502A5 (en) | 2003-09-15 |
CN1282652A (en) | 2001-02-07 |
CA2314024A1 (en) | 2001-02-02 |
EP1074353A2 (en) | 2001-02-07 |
ATE273109T1 (en) | 2004-08-15 |
EP1074353A3 (en) | 2003-02-05 |
US6733430B1 (en) | 2004-05-11 |
KR20010071110A (en) | 2001-07-28 |
AU4883900A (en) | 2001-02-08 |
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