EP0686464B1 - Waste removal station in a cutting out press - Google Patents
Waste removal station in a cutting out press Download PDFInfo
- Publication number
- EP0686464B1 EP0686464B1 EP19950106872 EP95106872A EP0686464B1 EP 0686464 B1 EP0686464 B1 EP 0686464B1 EP 19950106872 EP19950106872 EP 19950106872 EP 95106872 A EP95106872 A EP 95106872A EP 0686464 B1 EP0686464 B1 EP 0686464B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- board
- raised
- station
- downstream
- perforated board
- Prior art date
- 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.)
- Expired - Lifetime
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Classifications
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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
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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
- B26D2007/1872—Means for removing cut-out material or waste using breakaway pins
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- 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
- Y10T225/00—Severing by tearing or breaking
- Y10T225/30—Breaking or tearing apparatus
- Y10T225/371—Movable breaking tool
Definitions
- the present invention relates to a waste ejection station in a machine for cutting plate elements such as sheets of paper or cardboard.
- each blank generally includes the six sides of a box, some edges being completed with gluing or closing tabs.
- the waste that is to say the unused areas of the sheet either between the tabs or between the blanks, are immediately ejected after cutting so as to accumulate in the output stack only finished blanks connected together by a few attachment points.
- Such a machine usually comprises first of all an introduction station in which the sheets are removed one by one from the top of a previously installed stack, each sheet then being sent to a margin table. On this table, each sheet is placed in position against front and side cleats before being gripped at its front edge by a series of pliers mounted along a transverse bar, each end of which is attached to a side chain train taking the bar, therefore the sheet, to the cutting station comprising a platen press fitted with knives, then to the waste ejection station. If desired, the cutting station can be preceded by a station printing. These processing stations are followed by a receiving station in which each cut sheet is released by the clamps to fall jogged on top of an output stack.
- the sheet is brought flat on a horizontal board which is perforated around the periphery of the zones to be ejected.
- a horizontal upper ejection tool in the form of a frame provided with cross members supporting ejection needles or ejectors and / or pressers, is movable in the vertical direction.
- Under the perforated board is a second horizontal ejection tool also in the form of a frame supporting vertical telescopic needles arranged in correspondence with the upper ejectors. The end of these telescopic needles arrives in the openings of the board slightly below the upper plane.
- the respective ejector / telescopic needle combinations pinch the waste which they take down where they fall into a bin.
- the bars supporting the clamps whether solid or made from profiled bars, have a minimum thickness of 10 millimeters, and usually between 20 and 30 millimeters. So, if the pliers are "at the top", that is to say that they hold the sheet at the level of the upper face of the bar, it is necessary in addition to order the board and the lower tool in an alternating vertical movement down to let the clamp bar pass and up to support the sheet in its passage plane.
- a current ejection station therefore comprises three sets of individual tools controlled in translation, which requires a particularly heavy mechanism, of great inertia and consuming a very large energy.
- the aim of the present invention is an ejection station within a machine for cutting plate elements comprising so-called “top” gripper bars and the arrangement of the constituent parts of which enables their kinematics to be improved, in particular by reducing the number of movement control devices.
- upstream and downstream should be considered in relation to the direction of movement of a sheet, a “upstream” part then being close to the station entrance, a “downstream” part being close to its exit.
- the lifting of the downstream edge of the board takes place over a height equivalent to a little more than the thickness of the clamp bar, that is to say according to an angular rotation of between 1 and 6 degrees around its upstream edge, and preferably limited between 2 and 4 degrees.
- the ejection tools can themselves be biased, that is to say parallel to the perforated board in the raised position and slide orthogonally along oblique guides.
- the lifting device can act directly on the only downstream strip, if desired, connected to a substantially horizontal guide arm and pivoting around its upstream end.
- FIG. 1 is illustrated an ejection station 1 in which plate elements 5, such as sheets of paper or cardboard, are brought to the upper face of an openwork board 10 by clamps 6 mounted on a bar driven by two trains of side chains not shown.
- plate elements 5 such as sheets of paper or cardboard
- clamps 6 mounted on a bar driven by two trains of side chains not shown.
- corresponding pairs of upper fixed needles 22 and lower telescopic needles 32 belonging respectively to upper ejection tools 20 and lower 30 pinch a zone of waste from above and below to take it, in a downward translational movement out of the sheet 5 and drop it in an underlying tray not shown.
- the sheet 5 is again pulled by the pliers 6 towards the outlet of the station situated to the left of the figure.
- this ejection station 1 has two side windows 2 allowing access to the tools for changing them during the transition from one production to another according to different formats.
- Tools 20 and 30 are presented both in the form of a frame made from aluminum profiles taken in the vertical direction.
- the upper tool 20 can also support a plurality of pressers to press the sheet 5 against the board 10.
- the frames of the tools 20 and 30 have at least in their upstream and downstream sides horizontal grooves making it possible to hang them, in a movement of lateral translation through the window 2, on strips of upper 24 and lower 34 supports of the ejection station 1.
- Plate 10 is perforated as a function of the waste zones specific to a given format.
- This board is inserted into a frame also comprising, upstream and downstream, a horizontal groove enabling it to be engaged upstream in a lardon 11 and downstream in a lardon 18.
- the transport clamps 6 hold the sheet 5 in their upper surface. Therefore, it is necessary to regularly lower the board 10 to let through the clamp bar bringing a new sheet; then to reassemble this board 10 so that it comes to correctly support said sheet during the ejection of the waste.
- the upstream gib 11 is raised to bring the upper upstream edge of the board 10 to the plane XX of arrival of the sheet 5.
- the downstream side of the frame of plate 10 is inserted on the upper edge of the downstream lardon fixed 18, this connection, for example at the dovetail, then constituting a pivot pivot 9 of the upward movement of the board 10 induced by the lifting of the downstream lardon 11.
- the fixed downstream lardon 18 is, in a conventional manner, horizontal and the upstream lardon 11 is connected to two lateral arms 17 fixed at their upstream end to pivots 8 so as to perform their lifted according to a rotation around these dissociated pivots.
- the rise of the strip 11 to make up for the thickness of the clamp 6 implies a rotation of the board 10 around the pivots 9 (or 8) by an angle alpha between 1 and 6 degrees, in rather is in the range of 2 to 4 degrees.
- This low angle of rotation makes it possible in particular to keep the method of fixing the frame of the perforated board 10 to the bacon by the simple engagement of the edge of the latter in a corresponding groove on the side of the frame.
- the strip 11 is moreover guided in the direction of movement of the sheets by vertical guides 13 and, in the transverse direction, by a guide 13 '' parallel and offset with respect to the wall of the station 1.
- the ejection tools 20 and 30 are installed at an angle in this station 1, that is to say parallel to the perforated board 10 in the raised position.
- the holding studs 26 of the lardons 24 of the upper tool 20 slide along tubes or guide ribs 27 which are themselves oblique making, with respect to the vertical, an angle alpha identical to that of rotation of the Plate 10.
- the studs 36 linked to the lardons 34 of the lower ejection tool 30 slide along oblique tubes or guide ribs 37 parallel to the guides 27.
- the device for controlling the upper ejection tool 20 first comprises a cam 40 connected to the main drive shaft of the cutting machine, the position of this cam being read by a roller belonging to the first branch of a reading lever 41, the other branch of which is connected, mobile in rotation, to a control bar 42.
- the other end of the bar 42 is pivotally connected to a triple lever 43, the second branch of which is connected pivoting to a synchronization bar 44 oriented along the side wall of station 1, and the third branch of which is pivotally connected to the first upstream pull tab 47 acting on the stud 26 upstream of the tool 20.
- L the other end of the synchronization bar 44 is pivotally connected to a simple lever 45, the other branch of which is connected, still in pivoting, to the downstream pull rod 46 acting on the downstream stud 26 of the tool 20.
- the device for controlling the setting in motion of the ejection tool lower 30 first comprises a cam 50 whose position is read by a reading lever 51 acting on a control bar 52 connected to a triple lever 53.
- the second branch of this triple lever is connected to the downstream pusher 56 while the third branch is connected, by a synchronization bar 54, to a second lever 55 acting directly on the upstream pusher 57.
- the device for controlling the movement of the downstream lardon 11 of the board 10 comprises a rod 15 connected in rotation on one side to the sliding stud 12 lardon 11, and on its other side to the downstream end of a lever 16 pivoting at its upstream end.
- This lever 16 is lifted by a cam 19 during the rotation of the lever 45 in an anti-clockwise direction to which it is made integral.
- the ejection station 1 can operate in a reliable and efficient manner even if the upstream part of the perforated board 10 is no longer set in motion , which allows a substantial saving of parts constituting the movement control device.
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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)
- Making Paper Articles (AREA)
- Crushing And Pulverization Processes (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
La présente invention est relative à une station d'éjection de déchets dans une machine de découpe d'éléments en plaque tels que des feuilles de papier ou de carton.The present invention relates to a waste ejection station in a machine for cutting plate elements such as sheets of paper or cardboard.
Par exemple, ces machines sont utilisées pour découper dans chaque feuille un ou plusieurs flans qui, après pliage et collage, peuvent être transformés en des boîtes. Chaque flan inclut généralement les six faces d'une boîte, certains bords étant complétés de languettes de collage ou de fermeture. Utilement, les déchets, c'est-à-dire les zones inutilisées de la feuille soit entre les languettes soit entre les flans sont immédiatement éjectées après la découpe pour n'accumuler dans la pile de sortie que des flans finis reliés entre eux par quelques points d'attache.For example, these machines are used to cut one or more blanks from each sheet which, after folding and gluing, can be transformed into boxes. Each blank generally includes the six sides of a box, some edges being completed with gluing or closing tabs. Usefully, the waste, that is to say the unused areas of the sheet either between the tabs or between the blanks, are immediately ejected after cutting so as to accumulate in the output stack only finished blanks connected together by a few attachment points.
Une telle machine comprend usuellement d'abord une station d'introduction dans laquelle les feuilles sont enlevées une à une du dessus d'une pile préalablement installée, chaque feuille étant ensuite envoyée sur une table de marge. Sur cette table, chaque feuille est mise en position contre des taquets avant et latéraux avant d'être saisie en son bord frontal par une série de pinces montées le long d'une barre transversale, dont chaque extrémité est attachée à un train de chaînes latéral emmenant la barre, donc la feuille, dans la station de découpe comprenant une presse à platine munie de couteaux, puis dans la station d'éjection des déchets. Si désiré, la station de découpe peut être précédée d'une station d'impression. Ces stations de traitement sont suivies d'une station de réception dans laquelle chaque feuille découpée est relâchée par les pinces pour tomber taquée sur le dessus d'une pile de sortie.Such a machine usually comprises first of all an introduction station in which the sheets are removed one by one from the top of a previously installed stack, each sheet then being sent to a margin table. On this table, each sheet is placed in position against front and side cleats before being gripped at its front edge by a series of pliers mounted along a transverse bar, each end of which is attached to a side chain train taking the bar, therefore the sheet, to the cutting station comprising a platen press fitted with knives, then to the waste ejection station. If desired, the cutting station can be preceded by a station printing. These processing stations are followed by a receiving station in which each cut sheet is released by the clamps to fall jogged on top of an output stack.
Dans la station d'éjection; la feuille est amenée à plat sur une planche horizontale qui est ajourée selon le pourtour des zones à éjecter. Un outil d'éjection supérieur horizontal, sous la forme d'un cadre muni de traverses supportant des aiguilles d'éjection ou des éjecteurs et/ou des presseurs, est mobile dans le sens vertical. Sous la planche ajourée se trouve un deuxième outil d'éjection horizontal également sous la forme d'un cadre supportant des aiguilles télescopiques verticales disposées en correspondance avec les éjecteurs supérieurs. L'extrémité de ces aiguilles télescopiques arrive dans les ouvertures de la planche légèrement en deçà du plan supérieur. Ainsi, lorsque l'outil supérieur s'abaisse sur une feuille découpée mise en place, les combinaisons éjecteurs / aiguilles télescopiques respectives pincent les déchets qu'elles emmènent vers le bas où ils tombent dans un bac.In the ejection station; the sheet is brought flat on a horizontal board which is perforated around the periphery of the zones to be ejected. A horizontal upper ejection tool, in the form of a frame provided with cross members supporting ejection needles or ejectors and / or pressers, is movable in the vertical direction. Under the perforated board is a second horizontal ejection tool also in the form of a frame supporting vertical telescopic needles arranged in correspondence with the upper ejectors. The end of these telescopic needles arrives in the openings of the board slightly below the upper plane. Thus, when the upper tool is lowered onto a cut sheet placed, the respective ejector / telescopic needle combinations pinch the waste which they take down where they fall into a bin.
Pour des considérations de rigidité, les barres supportant les pinces, qu'elles soient pleines ou réalisées à partir de barres profilées, présentent une épaisseur minimum de 10 millimètres, et usuellement comprises entre 20 et 30 millimètres. Alors, si les pinces sont "en haut" c'est à dire qu'elles tiennent la feuille au niveau de la face supérieure de la barre, il est nécessaire de commander en plus la planche et l'outil inférieur dans un mouvement vertical alternatif de descente pour laisser passer la barre de pinces et de montée pour venir soutenir la feuille dans son plan de passage.For reasons of rigidity, the bars supporting the clamps, whether solid or made from profiled bars, have a minimum thickness of 10 millimeters, and usually between 20 and 30 millimeters. So, if the pliers are "at the top", that is to say that they hold the sheet at the level of the upper face of the bar, it is necessary in addition to order the board and the lower tool in an alternating vertical movement down to let the clamp bar pass and up to support the sheet in its passage plane.
Toutefois, un mouvement en translation verticale fiable et répétitif d'une planche ou d'un cadre horizontal ne peut être assuré qu'en agissant simultanément sur ses quatre coins. Une station d'éjection actuelle comprend donc trois jeux d'outils individuels commandés en translation, ce qui nécessite un mécanisme particulièrement lourd, de grande inertie et consommant une énergie très importante.However, a reliable and repetitive vertical translation movement of a board or a horizontal frame can only be ensured by acting simultaneously on its four corners. A current ejection station therefore comprises three sets of individual tools controlled in translation, which requires a particularly heavy mechanism, of great inertia and consuming a very large energy.
De plus, le mouvement vertical des outils crée, au sein de cette station, des remous d'air importants néfastes pour le positionnement correct d'une feuille fragilisée par la découpe.In addition, the vertical movement of the tools creates, within this station, significant eddies of air harmful for the correct positioning of a sheet weakened by cutting.
Le but de la présente invention est une station d'éjection au sein d'une machine de découpe d'éléments en plaque comprenant des barres de pinces dites "en haut" et dont l'agencement des parties constitutives permette une amélioration de leur cinématique, notamment par une réduction du nombre de dispositifs de commande des mouvements.The aim of the present invention is an ejection station within a machine for cutting plate elements comprising so-called "top" gripper bars and the arrangement of the constituent parts of which enables their kinematics to be improved, in particular by reducing the number of movement control devices.
Ces buts sont réalisés grâce à une station d'éjection selon la revendication 1.These objects are achieved by an ejection station according to claim 1.
Pour une meilleure compréhension de l'exposé, les termes "amont" et "aval" sont à considérer par rapport au sens de déplacement d'une feuille, une partie "amont" étant alors proche de l'entrée de la station, une partie "aval" étant proche de sa sortie.For a better understanding of the presentation, the terms "upstream" and "downstream" should be considered in relation to the direction of movement of a sheet, a "upstream" part then being close to the station entrance, a "downstream" part being close to its exit.
Avantageusement, la levée du bord aval de la planche s'effectue sur une hauteur équivalente à un peu plus que l'épaisseur de la barre de pince, c'est-à-dire selon une rotation angulaire comprise entre 1 et 6 degrés autour de son bord amont, et de préférence limitée entre 2 et 4 degrés.Advantageously, the lifting of the downstream edge of the board takes place over a height equivalent to a little more than the thickness of the clamp bar, that is to say according to an angular rotation of between 1 and 6 degrees around its upstream edge, and preferably limited between 2 and 4 degrees.
Ainsi, après de multiples essais de confirmation en atelier, on a constaté que, lors de l'arrêt d'une feuille et de la montée du bord aval de la planche, le bord amont libre de la feuille vient atterrir rapidement et sans difficultés sur le bord amont resté pratiquement immobile en correspondance de la planche ajourée. Cette descente peut d'autant mieux s'effectuer que le mouvement de la planche étant réduit au strict minimum, les remous d'air le sont également. Cette feuille étant alors parfaitement supportée comme auparavant, certes légèrement en biais, les outils éjecteurs peuvent évacuer les déchets sans encombres. Par cette solution, on a surtout pu simplifier le dispositif de commande du mouvement de la planche et réaliser ainsi une économie d'environ vingt pour-cent sur le nombre de pièces constituant la commande du mouvement de la planche.Thus, after multiple confirmation tests in the workshop, it has been found that, when a sheet stops and the downstream edge of the board rises, the free upstream edge of the sheet lands quickly and without difficulty on the upstream edge remained practically stationary in correspondence with the perforated board. This descent can be carried out all the better if the movement of the board is reduced to the strict minimum, the air swirls are also. This sheet is then perfectly supported as before, certainly slightly biased, the ejector tools can evacuate the waste without problems. By this solution, it was above all possible to simplify the device for controlling the movement of the board and thus to save about twenty percent on the number of parts constituting the control of the movement of the board.
Pour une meilleure coordination des mouvements, les outils d'éjection peuvent eux-mêmes être en biais, c'est-à-dire parallèles à la planche ajourée en position levée et coulisser orthogonalement le long de guides obliques.For better coordination of movements, the ejection tools can themselves be biased, that is to say parallel to the perforated board in the raised position and slide orthogonally along oblique guides.
Lorsque la planche ajourée est insérée en translation latérale sur des lardons amont et aval de support, le dispositif de levée peut agir directement sur le seul lardon aval, si désiré, relié à un bras de guidage sensiblement horizontal et pivotant autour de son extrémité amont.When the perforated board is inserted in lateral translation on the upstream and downstream support strips, the lifting device can act directly on the only downstream strip, if desired, connected to a substantially horizontal guide arm and pivoting around its upstream end.
L'invention sera mieux comprise à l'étude d'un exemple de réalisation pris à titre nullement limitatif et illustré sur les figures annexées, dans lesquelles :
- la figure 1 est une vue schématique en coupe longitudinale d'une station d'éjection selon l'invention, et
- la figure 2 est une vue schématique en perspective du dispositif de commande de mouvement de la planche ajourée.
- FIG. 1 is a schematic view in longitudinal section of an ejection station according to the invention, and
- Figure 2 is a schematic perspective view of the movement control device of the perforated board.
Sur la figure 1 est illustrée une station d'éjection 1 dans laquelle des éléments en plaque 5, tels que des feuilles de papier ou de carton, sont amenés sur la face supérieure d'une planche ajourée 10 par des pinces 6 montées sur une barre entraînée par deux trains de chaînes latéraux non illustrés. Lorsque la feuille 5 repose à l'arrêt sur cette planche 10, des paires en correspondance d'aiguilles fixes supérieures 22 et d'aiguilles télescopiques inférieures 32 appartenant respectivement à des outils d'éjection supérieurs 20 et inférieurs 30 viennent pincer une zone de déchets par le dessus et le dessous pour l'emmener, dans un mouvement de translation vers le bas hors de la feuille 5 et la laisser tomber dans un bac sous-jacent non illustré. Une fois la feuille 5 nettoyée, elle est à nouveau tirée par les pinces 6 vers la sortie de la station située à gauche de la figure.In FIG. 1 is illustrated an ejection station 1 in which plate elements 5, such as sheets of paper or cardboard, are brought to the upper face of an
Comme illustré sur cette figure 1, cette station d'éjection 1 comporte deux fenêtres latérales 2 permettant d'accéder aux outils pour les changer lors du passage d'une production à une autre selon des formats différents. Les outils 20 et 30 se présentent tous deux sous la forme d'un cadre réalisé à partir de profilés d'aluminium pris dans le sens de la hauteur.As illustrated in this FIG. 1, this ejection station 1 has two
Dans ce cadre sont installés une pluralité de longerons et de traverses permettant de fixer, en correspondance, des éjecteurs supérieurs 22, sous la forme d'aiguilles fixes, et des éjecteurs inférieurs 32 sous la forme d'aiguilles télescopiques. L'outil supérieur 20 peut également supporter une pluralité de presseurs pour plaquer la feuille 5 contre la planche 10. Les cadres des outils 20 et 30 présentent au moins en leur côté amont et aval des rainures horizontales permettant de les accrocher, dans un mouvement de translation latérale au travers de la fenêtre 2, sur des lardons de supports supérieurs 24 et inférieurs 34 de la station d'éjection 1.Within this framework are installed a plurality of longitudinal members and crosspieces making it possible to fix, in correspondence,
La planche 10 est ajourée en fonction des zones de déchets spécifiques à un format donné. Cette planche est insérée dans un cadre comprenant également, en amont et en aval, une rainure horizontale permettant de l'engager en amont dans un lardon 11 et en aval dans un lardon 18.
Comme illustré sur la figure 1, les pinces de transport 6 tiennent la feuille 5 en leur surface supérieure. De ce fait, il est nécessaire d'abaisser régulièrement la planche 10 pour laisser passer la barre de pinces amenant une nouvelle feuille; puis de remonter cette planche 10 pour qu'elle vienne supporter correctement ladite feuille lors de l'éjection des déchets.As illustrated in Figure 1, the
Plus particulièrement selon l'invention, seul le lardon amont 11 est levé pour amener le bord supérieur amont de la planche 10 au niveau du plan X-X d'arrivée de la feuille 5. Dans la variante illustrée sur la figure 1, le côté aval du cadre de la planche 10 est inséré sur la tranche supérieure du lardon aval fixe 18, cette liaison, par exemple en queue d'aronde, constituant alors un pivot de rotation 9 du mouvement de montée de la planche 10 induit par la levée du lardon aval 11.More particularly according to the invention, only the
En alternative et tel qu'illustré sur la figure 2, le lardon aval fixe 18 est, de manière conventionnelle, horizontal et le lardon amont 11 est relié à deux bras latéraux 17 fixés en leur extrémité amont à des pivots 8 de sorte à effectuer leur levée selon une rotation autour de ces pivots dissociés. Comme mieux visible sur la figure 1, la montée du lardon 11 pour rattraper l'épaisseur de la pince 6 implique une rotation de la planche 10 autour des pivots 9 (ou 8) d'un angle alpha compris entre 1 et 6 degrés, en fait plutôt de l'ordre de 2 à 4 degrés. Ce faible angle de rotation permet notamment de conserver le mode de fixation du cadre de la planche ajourée 10 aux lardons par le simple engagement de la tranche de ce dernier dans une rainure correspondante du côté du cadre.As an alternative and as illustrated in FIG. 2, the fixed
Comme mieux visible sur la figure 2, le lardon 11 est par ailleurs guidé dans le sens de déplacement des feuilles par des guides verticaux 13 et, dans le sens transversal, par un guide 13'' parallèle et décalé par rapport à la paroi de la station 1.As best seen in FIG. 2, the
Plus particulièrement selon l'invention et comme mieux visible sur la figure 1, les outils d'éjection 20 et 30 sont installés de biais dans cette station 1, c'est-à-dire parallèles à la planche ajourée 10 en position levée. Pour ce, les plots de maintien 26 des lardons 24 de l'outil supérieur 20 coulissent le long de tubes ou de nervures-guides 27 eux-mêmes obliques faisant, par rapport à la verticale, un angle alpha identique à celui de rotation de la planche 10. De manière symétrique, les plots 36 liés aux lardons 34 de l'outil d'éjection inférieur 30 coulissent le long de tubes ou nervures-guides 37 obliques parallèles aux guides 27.More particularly according to the invention and as best seen in FIG. 1, the
Comme on peut le constater sur cette figure, cette mise à l'oblique des outils 20 et 30 ne gêne nullement le dispositif de commande en mouvement vertical. En effet, le dispositif de commande de l'outil d'éjection supérieur 20 comprend d'abord une came 40 reliée à l'arbre moteur principal de la machine de découpe, la position de cette came étant lue par un galet appartenant à la première branche d'un levier de lecture 41 dont l'autre branche est reliée, mobile en rotation, à une barre de commande 42. L'autre extrémité de la barre 42 est reliée en pivotement à un levier triple 43 dont la seconde branche est reliée en pivotement à une barre de synchronisation 44 orientée le long de la paroi latérale de la station 1, et dont la troisième branche est reliée, en pivotement, à la première tirette amont 47 agissant sur le plot 26 amont de l'outil 20. L'autre extrémité de la barre de synchronisation 44 est reliée, en pivotement, à un levier simple 45 dont l'autre branche est reliée, toujours en pivotement, à la tirette aval 46 agissant sur le plot aval 26 de l'outil 20.As can be seen in this figure, this oblique positioning of the
Comme on peut aisément le comprendre au vu de la figure 1, la levée du levier de lecture 41 par la came 40 tire vers le bas la barre de commande 42 ce qui entraîne une levée simultanée des tirettes 47 donc une levée simultanée des plots 26, lardons 24 et outils supérieurs 20, et ce contre la compression des ressorts 28. Cette levée d'outils s'effectue lors du transfert d'une nouvelle feuille 5.As can easily be understood from FIG. 1, the lifting of the
De manière symétrique, le dispositif de commande de la mise en mouvement de l'outil d'éjection inférieur 30 comprend d'abord une came 50 dont la position est lue par un levier de lecture 51 agissant sur une barre de commande 52 reliée à un levier triple 53. La seconde branche de ce levier triple est reliée au poussoir aval 56 alors que la troisième branche est reliée, par une barre de synchronisation 54, à un second levier 55 agissant directement sur le poussoir amont 57.Symmetrically, the device for controlling the setting in motion of the ejection tool lower 30 first comprises a
Alors, la levée du levier de lecture 51 par la came 50 tire la barre de commande 52 vers la droite ce qui provoque une levée coordonnée des poussoirs 56 montant simultanément les plots 36, lardons 34 et l'outil 30, et ce contre la traction des ressorts 38. Cette opération intervient lors de l'éjection du déchet une fois une feuille 5 posée sur la planche 10.Then, the lifting of the
Toutes les liaisons des organes constitutifs des dispositifs de commande de mouvements décrits précédemment étant des liaisons en rotation, on ne constate aucune interférence avec le fait que les outils 20 et 30 se déplacent dans un mouvement de translation légèrement en biais par rapport a la verticale. Avantageusement et comme mieux visible dans la partie supérieure gauche de la figure 1 et sur la figure 2, le dispositif de commande de mouvement du lardon aval 11 de la planche 10 comprend une tige 15 reliée en rotation d'un côté au plot de coulissement 12 du lardon 11, et en son autre côté à l'extrémité aval d'un levier 16 pivotant en son extrémité amont. Ce levier 16 est soulevé par une came 19 lors de la rotation en sens inverse des aiguilles d'une montre du levier 45 dont elle est rendue solidaire. Cette liaison rigide entre le levier 45 et la came 19 plus ou moins calée en avance ou en retard assure la synchronisation parfaite entre la levée préalable du lardon 11 donc la rotation de la planche 10, un éventuel temps de latence pour l'atterrissage du bord amont de la feuille 5 sur la planche, et l'abaissement en position de l'outil 20 simultanément à la mise en place en montée de l'outil 30. La poursuite de l'abaissement de l'outil 20 contre les aiguilles télescopiques 32 est accusée, au niveau de la came 19, par une partie amont rigoureusement circulaire.All the connections of the constituent members of the movement control devices described above being rotational connections, there is no interference with the fact that the
Comme on a pu le constater à la lecture de cet exposé, la station d'éjection 1 selon l'invention peut fonctionner d'une manière fiable et efficace quand bien même la partie amont de la planche ajourée 10 n'est plus mise en mouvement, ce qui permet une économie substantielle de pièces constituant le dispositif de commande de mouvement.As we have seen from this presentation, the ejection station 1 according to the invention can operate in a reliable and efficient manner even if the upstream part of the
De nombreuses améliorations peuvent être apportées à cette station d'éjection dans l'etendue des revendications.Many improvements can be made to this ejection station within the scope of the claims.
Claims (4)
- Stripping station in a machine for die-cutting plate-like workpieces, comprising gripper bars operating in their upper surface in order to convey the plate-like workpieces in their plane (X-X), this station comprising a perforated board (10) which is raised and lowered by a first control device (12-16) in order to bear a plate-like workpiece (5) held by the grippers, the waste from the workpiece being gripped and then conveyed downwards by upper fixed pins (22) and lower telescopic pins (23) belonging respectively to an upper stripping tool (20) and a lower stripping tool (30) movable vertically by a second (40-47) and a third (50-57) control device, characterized by the fact that only the downstream edge of the perforated board (10) is raised and lowered, so as to pivot around its upstream edge, the raised perforated board (10) being skewed with regard to the plane of arrival of the plate-like workpieces.
- Station according to claim 1, characterized by the fact that the downstream edge of the board (10) is raised by angular rotation between 1 and 6°, preferably between 2 and 4°.
- Station according to claim 1, characterized by the fact that the stripping tools (20, 30) are parallel to the raised perforated board (10) and by the fact that they slide along oblique guides (27, 37) at right angles.
- Station according to claim 1, in wherein the perforated board (10) is inserted in lateral translation into upstream (11) and downstream (18) support strips, characterized by the fact that the raise control device (12-16) acts only on the downstream strip (11) which, if desired, is connected to a substantially horizontal guide arm (17) which pivots around its upstream end.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1492/94 | 1994-05-13 | ||
CH01492/94A CH689974A5 (en) | 1994-05-13 | 1994-05-13 | ejection station of waste in a plate member cutting machine. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0686464A1 EP0686464A1 (en) | 1995-12-13 |
EP0686464B1 true EP0686464B1 (en) | 1997-12-10 |
Family
ID=4211729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19950106872 Expired - Lifetime EP0686464B1 (en) | 1994-05-13 | 1995-05-06 | Waste removal station in a cutting out press |
Country Status (12)
Country | Link |
---|---|
US (1) | US5605527A (en) |
EP (1) | EP0686464B1 (en) |
JP (1) | JP2625401B2 (en) |
KR (1) | KR0174641B1 (en) |
CN (1) | CN1050794C (en) |
AT (1) | ATE160964T1 (en) |
AU (1) | AU678699B2 (en) |
BR (1) | BR9502036A (en) |
CH (1) | CH689974A5 (en) |
DE (1) | DE69501185T2 (en) |
ES (1) | ES2110280T3 (en) |
TW (1) | TW303753U (en) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH691035A5 (en) * | 1995-04-18 | 2001-04-12 | Bobst Sa | Tool for machine cutting of plate members, and associated equipment. |
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. |
US7572374B2 (en) * | 2000-04-13 | 2009-08-11 | Transvivo, Inc. | Anticoagulant and thrombo-resistant hollow fiber membranes for in-vivo plasmapheresis and ultrafiltration |
CH694086A5 (en) * | 2000-05-16 | 2004-07-15 | Bobst Sa | forming press. |
US6659927B2 (en) | 2001-04-30 | 2003-12-09 | Sdc Innovations, Inc. | Folding presser assembly |
US6692425B2 (en) | 2001-04-30 | 2004-02-17 | Sdc Innovations, Inc. | Folding presser assembly |
US6589148B2 (en) * | 2001-08-08 | 2003-07-08 | Michael P. Tarka | Moveable presser rail assembly |
US6792840B2 (en) | 2002-02-08 | 2004-09-21 | Atlas Die Llc | Folding plunger assembly for blanking system |
CH695444A5 (en) * | 2002-03-28 | 2006-05-31 | Bobst Sa | Body support, attachment and building plan tool used in station ejection waste of press cutting. |
US7044040B1 (en) | 2003-03-27 | 2006-05-16 | Sebring Container Corporation | Leading and trailing edge stitch tab scrap strippers |
TWI241241B (en) * | 2003-10-13 | 2005-10-11 | Bobst Sa | Blank diecutting machine |
TWI246452B (en) * | 2003-10-14 | 2006-01-01 | Bobst Sa | Blanking station of a diecutting press |
US20050227846A1 (en) * | 2004-04-08 | 2005-10-13 | Paolo Quercia | Stripping device for a press |
US7360475B2 (en) * | 2004-04-08 | 2008-04-22 | Paolo Quercia | Stripping device for a press |
CN100464970C (en) * | 2006-06-26 | 2009-03-04 | 山东新华医疗器械股份有限公司 | Automatic reject device of waste edge |
DE102007008258A1 (en) * | 2007-02-20 | 2008-08-21 | Heidelberger Druckmaschinen Ag | Bar breaking device, has right-angled shaft pivotably supported on sides of flat path in housing, and formed with die holder elements as square profile shafts, where stripping tool is fastened to die holder elements |
US20100192742A1 (en) * | 2009-01-30 | 2010-08-05 | Michigan Lasercut | Stripping apparatus |
EP2263839A1 (en) | 2009-06-18 | 2010-12-22 | Amcor Tobacco Packaging Switzerland LLC | Flatbed die-cutting press for cutting shapes in sheets of board material |
DE102010049960A1 (en) * | 2010-10-28 | 2012-05-03 | Multivac Sepp Haggenmüller Gmbh & Co. Kg | Thermoforming packaging machine and method of operating such a thermoforming packaging machine |
JP5984715B2 (en) * | 2013-02-27 | 2016-09-06 | 株式会社島精機製作所 | Edge discharge device for sheet material |
CN103817738B (en) * | 2014-03-12 | 2015-09-09 | 四川西林石油物资装备有限公司 | A kind of garbage collection structure |
CN104030076A (en) * | 2014-05-19 | 2014-09-10 | 天津长荣印刷设备股份有限公司 | Device for sampling without halt and working method of device |
RU2694303C1 (en) * | 2016-03-09 | 2019-07-11 | Бобст Мекс Са | Releasing element and machine for processing elements in form of sheets |
CN108297159B (en) * | 2018-01-24 | 2023-12-22 | 苏州三屹晨光自动化科技有限公司 | Battery membrane waste collection device |
CN108526291B (en) * | 2018-05-31 | 2023-09-12 | 东莞朗诚微电子设备有限公司 | Punching and connecting equipment |
TR202019003A2 (en) | 2020-11-25 | 2021-03-22 | Oezkoc Hidrolik Makina Sanayi Ve Ticaret Anonim Sirketi | SINGLE AXIS FIRE SHOOTING MECHANISM |
CN116352799B (en) * | 2023-04-19 | 2023-10-20 | 盐城健牌科技有限公司 | Sealing strip puncher |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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US2548370A (en) * | 1946-11-18 | 1951-04-10 | Eric L Hedstrom | Box or carton stripper machine |
CH324448A (en) * | 1955-05-24 | 1957-09-30 | Bobst Fils Sa J | Press for cutting sheet material, such as paper or cardboard |
CH530850A (en) * | 1971-07-13 | 1972-11-30 | Bobst Fils Sa J | Press for cutting sheet material |
IT1023941B (en) * | 1974-03-07 | 1978-05-30 | Bobst Fils Sa J | DEVICE FOR EXPULSES AND CUTS OF A SHEET CUT BY MEANS OF A PLATE PRESS |
US4452595A (en) * | 1982-01-18 | 1984-06-05 | Federal Paper Board Company, Inc. | Stripper apparatus for paperboard blanks |
JP2621565B2 (en) * | 1990-04-11 | 1997-06-18 | 松下電器産業株式会社 | Magnetic recording media |
JPH0796276B2 (en) * | 1993-02-15 | 1995-10-18 | 共益工業株式会社 | Pinboard type board cutting machine |
US5402698A (en) * | 1993-04-15 | 1995-04-04 | Die-X Tooling Systems | Method for sychronizing tooling in a die-cutting machine for generating die-cut blanks |
US5529565A (en) * | 1994-01-18 | 1996-06-25 | Oetlinger; Frank E. | Presser assembly |
-
1994
- 1994-05-13 CH CH01492/94A patent/CH689974A5/en not_active IP Right Cessation
-
1995
- 1995-05-03 TW TW084217503U patent/TW303753U/en unknown
- 1995-05-05 AU AU17911/95A patent/AU678699B2/en not_active Ceased
- 1995-05-06 AT AT95106872T patent/ATE160964T1/en not_active IP Right Cessation
- 1995-05-06 DE DE69501185T patent/DE69501185T2/en not_active Expired - Lifetime
- 1995-05-06 EP EP19950106872 patent/EP0686464B1/en not_active Expired - Lifetime
- 1995-05-06 ES ES95106872T patent/ES2110280T3/en not_active Expired - Lifetime
- 1995-05-12 CN CN95106112A patent/CN1050794C/en not_active Expired - Lifetime
- 1995-05-12 KR KR1019950011754A patent/KR0174641B1/en not_active IP Right Cessation
- 1995-05-12 BR BR9502036A patent/BR9502036A/en not_active IP Right Cessation
- 1995-05-15 JP JP11573995A patent/JP2625401B2/en not_active Expired - Fee Related
- 1995-05-15 US US08/441,622 patent/US5605527A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH081589A (en) | 1996-01-09 |
CN1050794C (en) | 2000-03-29 |
AU1791195A (en) | 1995-11-23 |
TW303753U (en) | 1997-04-21 |
CH689974A5 (en) | 2000-02-29 |
US5605527A (en) | 1997-02-25 |
JP2625401B2 (en) | 1997-07-02 |
ES2110280T3 (en) | 1998-02-01 |
DE69501185D1 (en) | 1998-01-22 |
KR0174641B1 (en) | 1999-02-18 |
BR9502036A (en) | 1995-12-26 |
CN1112476A (en) | 1995-11-29 |
DE69501185T2 (en) | 1998-04-16 |
KR950031285A (en) | 1995-12-18 |
ATE160964T1 (en) | 1997-12-15 |
EP0686464A1 (en) | 1995-12-13 |
AU678699B2 (en) | 1997-06-05 |
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