EP2572843B1 - Method for adjusting a stamping tool and sheet stamping station with covering panel that can be held using suction - Google Patents

Method for adjusting a stamping tool and sheet stamping station with covering panel that can be held using suction Download PDF

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Publication number
EP2572843B1
EP2572843B1 EP12180978.4A EP12180978A EP2572843B1 EP 2572843 B1 EP2572843 B1 EP 2572843B1 EP 12180978 A EP12180978 A EP 12180978A EP 2572843 B1 EP2572843 B1 EP 2572843B1
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EP
European Patent Office
Prior art keywords
punching
sheet
plate
station
machine
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EP12180978.4A
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German (de)
French (fr)
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EP2572843A1 (en
Inventor
Markus Möhringer
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Masterwork Machinery Co Ltd
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Masterwork Machinery Co Ltd
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Publication of EP2572843A1 publication Critical patent/EP2572843A1/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4409—Cutters therefor; Dies therefor having die balancing or compensating means

Definitions

  • the invention relates to a method for trimming a punching tool according to claim 1, a punching station according to claim 4 and a flatbed sheet punching machine according to claim 9.
  • punching As punching the cutting is referred to with closed geometric blank forms that can be circular, oval or polygonal and imaginary shapes of all kinds. Also the practices practiced in print finishing, such as punching with punch, corner punching and register punching are counted to this area.
  • the punching takes place against a punching pad or against stamp, in some cases it is also shearing operations.
  • Packaging materials made of paper, cardboard, cardboard or corrugated board are mainly punched in sheet format. Even materials such as film (in-mold), various thin plastics or aluminum foil can be processed accordingly. When punching but also creasing lines or blind embossing can be introduced into the benefit. This complex process makes it indispensable to punch the sheets individually.
  • Such a flat bed punch is for example from the DE 30 44 083 A1 known.
  • the two tables are equipped with cutting and scoring tools or corresponding counter tools with which punched out of the cyclically guided between the table surface sheets the benefits and at the same time pressed the necessary for clean folding grooves. In the subsequent breakout the waste is removed by machine tools. Depending on the equipment of the machine finally the punched benefits can be separated in a designatedWhentrenn arthritis.
  • the punching pressure in the sheet punching and embossing machine must be adjustable according to the sheet being processed.
  • punching force adjusting devices can only be adjusted globally, i. based on the entire surface of the crucible. Due to the design, however, an uneven punching force distribution over the surface of the crucible is present in all stamping and embossing machines according to the prior art.
  • the punching force is introduced via individual force introduction points and thus does not affect the entire crucible surface.
  • there is a deformation of upper and lower table which in turn results in an uneven punching pressure distribution over the surface of the crucible.
  • height differences of the punching or Rillmesser, as well as the wear of the knife cause an uneven punching pressure distribution.
  • the uneven punching pressure in turn causes an unclean cutting of the cutting blade of the punching tool.
  • the usual procedure when trimming a punching tool is the following: after a test sheet has been punched and it is recognizable at which points a dressing is required, the punching tool is pulled out of the sheet punching station, the cover plate, which rests on the punching plate, removed by hand and set aside posed. Thus, the punching plate is accessible and adhesive tape can be pasted behind or contoured Zurichtebogen be deposited. After trimming the cover plate is placed back on the punching plate and pushed the punch back into the punching station.
  • a disadvantage of this procedure according to the prior art is the required handling of the cover plate. In large-format punching machines, the cover plate is unwieldy and heavy, which is a burden for the machine operator. Another disadvantage is the time required for handling the cover plate. Also problematic can be the interim storage of Cover plate during the trimming process, since the cover must be placed securely in order to avoid damage to the plate.
  • the cover plate must be easy to remove, so that it can be easily replaced when worn and so that when using the punching station for hot stamping can be easily removed to create space for the hot stamping unit.
  • the object of the present invention is therefore to describe a method for trimming a punching tool and to provide a sheet punching station as well as a flatbed sheet punching machine, in each case reducing the disadvantages of the prior art and enabling a less complex trimming of a punching tool.
  • the inventive method is used for trimming a punching tool of a punching station, which has an upper table and a lower table.
  • the sheet punching station is part of a flatbed sheet punching machine.
  • the punching tool has a punching plate, to which punching blades are fixed, and a cover plate resting on the punching plate.
  • the following steps are carried out according to the invention: in a first step, punching of a test sheet takes place in the punching station, wherein this test sheet and thus the trimming need can be assessed. Subsequently, fixing the cover plate to the upper table.
  • the punching plate can be extended from its working position between the upper table and the lower table in a trimming position, while the cover plate remains in the sheet punching station at its position below the upper table.
  • the trimming plate After the trimming plate has been trimmed, it can be moved back into its working position and the punching tool is ready for use. Then, the fixation of the cover plate can either be canceled or maintained during the stamping process.
  • the fixing of the cover plate to the upper table by mechanical clamping and / or by hydraulic clamping and / or by magnetic holding and / or by pneumatic holding.
  • the various clamping or holding principles can be used alternatively or mutually complementary.
  • the fixing is done by pneumatic holding and to the cover plate, a negative pressure is applied for this purpose.
  • This embodiment has the advantages that, in contrast to mechanical clamping no additional, space-requiring mechanical components must be used and that, in contrast to hydraulic clamping no hydraulic lines must be laid and that in contrast to magnetic holding the fixing is made possible regardless of the material of the cover , Another advantage is obtained when a vacuum generator or a vacuum source is already present in the sheet punching station, since this is used for other functions.
  • the invention also relates to the sheet punching station of a flatbed sheet punching machine, which is particularly suitable for carrying out the method described above.
  • the punching station has an upper crucible and a lower crucible, wherein one of the two crucibles is stroke-moved and wherein a punching tool is connected to the upper crucible.
  • the punching tool has a punching plate with punching blades and a cover plate arranged between the punching plate and the upper pot.
  • the upper crucible is provided with suction openings and the sheet punching station has a vacuum source or a vacuum generator, which is connected via lines to the suction openings of the upper crucible.
  • a suction air is provided by the vacuum source or the vacuum generator, by means of which the cover plate can be kept in its position below the upper crucible during trimming.
  • the punching plate experiences no suction and can be easily pulled out for trimming from its working position between the upper crucible and lower crucible. It is advantageous if the suction openings are adapted in the upper crucible so that a suction force acts exclusively on the cover plate.
  • the punching plate is held by a closing frame, which allows easy handling and easy positioning of the punching plate.
  • the vacuum source or the vacuum generator also provides suction air at the lower pot, which serves for sucking a punching plate during the punching operation.
  • this has a machine control and an operator interface for controlling the suction air.
  • the machine operator for example, whether the cover plate should remain in the sheet punching station during the trimming process, or whether it should be extended together with the stamping plate.
  • the invention also relates to a flatbed sheet punching machine having a punching station as described above for carrying out a method for trimming a punching tool as described above.
  • FIG. 1 the basic structure of a sheet punching and embossing machine 100 for punching, breaking,haptines and storing sheets of paper, cardboard, plastic and the like is shown.
  • the punching and embossing machine 100 has a feeder 1, a punching station 2, a breakout station 3 and a boom 4 with storage and respecttrennstation, which are supported by a common machine housing 5 and enclosed and driven by a main drive 17. From one side, the so-called operator side, the processing stations 2, 3, 4 are accessible; on the opposite side, the so-called drive side, there is the drive train of the sheet punching and embossing machine 100.
  • a machine control 15 controls the processes within the punching machine 100.
  • the sheet 6 are separated by a feeder 1 from a stack, fed to the sheet transport system 7 and from on gripper bars of a gripper carriage. 8 gripped grippers taken at its front edge and pulled in the sheet transport direction B intermittently through the various stations 2, 3 and 4 of the punching and embossing machine 100.
  • the sheet transport system 7 has a plurality of gripper carriages 8, so that a plurality of sheets 6 can be processed simultaneously in the various stations 2, 3 and 4.
  • the gripper carriage 8 can be driven by a chain drive or in an alternative embodiment by an electromagnetic linear drive with traveling wave motors, such as in the DE 20 2007 012 349 U1 described.
  • the punching station 2 consists of a lower crucible, a so-called. Subtable 9, and an upper crucible, a so-called. Obertisch 10.
  • the upper table 10 is vertically reciprocally mounted and provided with an upper tool 30 with punching and Rillmessern.
  • the lower table 9 is fixedly mounted in the machine frame and provided with a counter-plate 20 to the punching and Rillmessern. Alternatively, the upper table 10 fixed and the lower table 9 may be moved.
  • embossing embossing tools, in particular in the form of so-called embossing dies, are used instead of the punching and scoring tools.
  • the gripper carriage 8 transports the sheet 6 from the punching and embossing station 2 in the subsequent breaking station 3, which is equipped with breakout tools 21, 23.
  • the breaking station 3 the waste pieces 11 which are not required are pushed out of the sheet 6 downward with the aid of the breaking-out tools 21, 23, whereby the waste pieces 11 fall into a carriage-like container 12 inserted below the station.
  • the boom 4 may also include a pallet 13, on which the individual sheets 6 or benefits in the form of a stack 14 are stacked, so that after reaching a certain stack height, the pallet 13 with the Sheet stack 14 can be moved away from the area of the punching and embossing machine 100.
  • auxiliary stacking devices may be used.
  • FIG. 2a shows the situation when trimming according to the prior art.
  • the punching tool 30 is moved out of the punching station 2 from a working position between the upper table 10 and the lower table 9 of the punching station 2 in the direction a. So that the back of the punching plate 31 is accessible and can be glued with adhesive tape or covered with trimming sheet, the cover plate 32 must be removed as shown by arrow e and set aside.
  • FIGS. 2b to d the situation when dressing according to the invention is shown.
  • the upper table 10 is provided for this purpose with suction openings 41, which are connected via lines to a vacuum generator or a vacuum source 40. Thereby, a suction air is provided at the suction openings 41, which causes a suction force S on the cover plate. If the punching plate 31 are to be dressed, the suction air is activated and the suction force on the cover plate 32 is effective. The cover plate 32 is pulled against the upper table 10 and held there in position. Then the punching plate 31 can be pulled out of its working position between the upper table 10 and lower table 9 in the direction of arrow a.
  • the suction force during retraction a of the punching 30 remain disabled, so that, if desired, the punching plate 31 can be moved out together with the cover plate 32. This may be necessary, for example, if the cover plate 32 present in the stamping station 2 is to be replaced by another cover plate 32.

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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)

Description

Die Erfindung betrifft ein Verfahren zum Zurichten eines Stanzwerkzeugs gemäß Anspruch 1, eine Bogenstanzstation gemäß Anspruch 4 und eine Flachbettbogenstanzmaschine gemäß Anspruch 9.The invention relates to a method for trimming a punching tool according to claim 1, a punching station according to claim 4 and a flatbed sheet punching machine according to claim 9.

Stand der TechnikState of the art

Als Stanzen wird das Schneiden mit in sich geschlossenen geometrischen Zuschnittsformen bezeichnet, die kreisförmig, oval oder mehreckig sowie Phantasieformen aller Art sein können. Auch die in der Druckweiterverarbeitung geübten Praktiken, wie Stanzen mit Locheisen, Eckenabstoßen und Registerstanzen werden zu diesem Bereich gezählt. Die Stanzung erfolgt gegen eine Stanzunterlage oder gegen Stempel, teilweise sind es auch Schervorgänge. Verpackungsmaterialien aus Papier, Karton, Pappe oder Wellpappe werden hauptsächlich im Bogenformat gestanzt. Auch Materialien wie Folie (In-mould), diverse dünne Kunststoffe oder Aluminiumfolie können entsprechend bearbeitet werden. Beim Stanzvorgang können zusätzlich aber auch Rilllinien oder Blindprägungen in den Nutzen eingebracht werden. Dieser komplexe Prozess macht es unabdingbar, die Bogen einzeln zu stanzen. Da es sich bei den Endprodukten um anspruchsvolle Verpackungen hinsichtlich technischer und graphischer Ausführung handelt (etwa Verpackungen für Kosmetik, Zigaretten, Pharmazie, Lebensmittel, etc.), werden besondere Anforderungen nicht nur an die Verpackungsmaterialien selbst gestellt, sondern es sind für optimale Resultate auch Stanzwerkzeuge mit geringsten Toleranzen und äußerst präzise und zuverlässig arbeitende Stanzmaschinen erforderlich. Diesen Ansprüchen wird das Flachbettstanzen am besten gerecht. Dabei werden die gedruckten und auf einer Palette gestapelten Bogen der Stanzmaschine zugeführt. In der Maschine werden in einer Ausrichteinrichtung die zu stanzenden Bogen passgenau ausgerichtet, von einem Greiferwagen übernommen und exakt in der Stanzeinrichtung zwischen einem fest gelagerten Untertisch und einem über einen Kniehebel oder Exzentergetriebe vertikal bewegbaren Obertisch positioniert. Alternativ sind Maschinen bekannt, bei denen der Obertisch feststeht und für den Stanzvorgang der Untertisch gegen den Obertisch bewegt wird.As punching the cutting is referred to with closed geometric blank forms that can be circular, oval or polygonal and imaginary shapes of all kinds. Also the practices practiced in print finishing, such as punching with punch, corner punching and register punching are counted to this area. The punching takes place against a punching pad or against stamp, in some cases it is also shearing operations. Packaging materials made of paper, cardboard, cardboard or corrugated board are mainly punched in sheet format. Even materials such as film (in-mold), various thin plastics or aluminum foil can be processed accordingly. When punching but also creasing lines or blind embossing can be introduced into the benefit. This complex process makes it indispensable to punch the sheets individually. Since the end products are sophisticated packaging in terms of technical and graphic design (such as packaging for cosmetics, cigarettes, pharmacy, food, etc.), special requirements are not only placed on the packaging materials themselves, but are also punching tools for optimum results required with the smallest tolerances and extremely precise and reliable punching machines. Flatbed punching best meets these demands. The printed sheets stacked on a pallet are fed to the punching machine. In the machine, the sheets to be punched are precisely aligned, taken over by a gripper carriage and exactly in the punching device between a fixed undercounter and a vertical over a toggle or eccentric gear in an alignment positioned movable upper table. Alternatively, machines are known in which the upper table is fixed and is moved for the punching operation of the lower table against the upper table.

In bekannten Bogenstanz- und Prägemaschinen, die zum Stanzen, Ausbrechen, Prägen und Ablegen von Bögen aus Papier, Pappe und der gleichen eingesetzt werden, ist es bekannt die Bögen mittels Greiferwagen durch die einzelnen Stationen der Maschine zu bewegen. Ein jeweiliger Greiferwagen besitzt eine Greiferbrücke, an der Greifer befestigt sind, die die Bögen an einem vorderen Ende ergreifen. Ein Greiferwagen besitzt weiterhin seitliche Fahrwagen, welche mit endlosen Ketten des Transportsystems verbunden sind und wodurch die Greiferwagen durch die Maschine bewegt werden. Durch diese Art der Bewegung der Bögen durch die Maschine wird ein kontinuierliches Arbeiten in den einzelnen hintereinander angeordneten Stationen der Maschine, insbesondere Stanz-, Ausbrech- und Nutzentrennstation, ermöglicht.In known sheet punching and embossing machines, which are used for punching, breaking, stamping and depositing sheets of paper, cardboard and the like, it is known to move the sheets by means of gripper carriage through the individual stations of the machine. A respective gripper carriage has a gripper bridge, to which grippers are fixed, which grasp the arches at a front end. A gripper carriage further has lateral carriages, which are connected to endless chains of the transport system and whereby the gripper carriage to be moved by the machine. By this type of movement of the sheets through the machine, a continuous work in the individual successively arranged stations of the machine, in particular punching, break-away and Nutzentrennstation allows.

Eine derartige Flachbettstanze ist beispielsweise aus der DE 30 44 083 A1 bekannt. Die beiden Tische sind mit Schneid- und Rillwerkzeugen bzw. entsprechenden Gegenwerkzeugen bestückt, mit denen aus dem taktweise zwischen die Tischfläche geführten Bögen die Nutzen ausgestanzt und gleichzeitig die zum sauberen Falten notwendigen Rillen eingedrückt werden. In der nachfolgenden Ausbrecheinrichtung wird der Abfall über Ausbrechwerkzeuge maschinell entfernt. Je nach Ausstattung der Maschine können schließlich die gestanzten Nutzen in einer hierfür vorgesehenen Nutzentrenneinrichtung separiert werden.Such a flat bed punch is for example from the DE 30 44 083 A1 known. The two tables are equipped with cutting and scoring tools or corresponding counter tools with which punched out of the cyclically guided between the table surface sheets the benefits and at the same time pressed the necessary for clean folding grooves. In the subsequent breakout the waste is removed by machine tools. Depending on the equipment of the machine finally the punched benefits can be separated in a designated Nutzentrenneinrichtung.

Um Produkte von hoher Qualität zu erhalten, muss der Stanzdruck in der Bogenstanz- und -prägemaschine je nach zu bearbeitenden Bogen angepasst werden können.In order to obtain high quality products, the punching pressure in the sheet punching and embossing machine must be adjustable according to the sheet being processed.

Wie in der DE 30 44 083 C3 beschrieben, geschieht dies durch Verschieben von keilförmigen Stahlplatten. Diese Stahlplatten befinden sich zwischen Exzenterwellen und dem angetriebenen Obertisch. Durch das Verschieben der keilförmigen Stahlplatten wird der Abstand zwischen bewegtem Obertisch und festem Untertisch, und damit die Stanzkraft, verändert.Like in the DE 30 44 083 C3 described, this is done by moving wedge-shaped steel plates. These steel plates are located between eccentric shafts and the driven upper table. By moving the wedge-shaped steel plates, the distance between the moving upper table and fixed lower table, and thus the punching force, is changed.

Den verschiedenen Vorrichtungen zum Einstellen der Stanzkraft nach dem Stand der Technik ist gemein, dass die Stanzkraft nur global eingestellt werden kann, d.h. auf die gesamte Fläche des Tiegels bezogen. Konstruktionsbedingt liegt jedoch bei allen Stanzund Prägemaschinen nach dem Stand der Technik eine ungleiche Stanzkraftverteilung über die Fläche des Tiegels vor. Die Stanzkraft wird über einzelne Krafteinleitungspunkte eingeleitet und liegt somit nicht an der gesamten Tiegelfläche an. In Abhängigkeit von der Steifigkeit der Tiegel ergibt sich eine Verformung von Ober- und Untertisch, woraus wiederum eine ungleiche Stanzdruckverteilung über die Fläche des Tiegels resultiert. Auch Höhenunterschiede der Stanz- bzw. Rillmesser, als auch der Verschleiß der Messer bewirken eine ungleiche Stanzdruckverteilung. Der ungleiche Stanzdruck wiederum bewirkt ein unsauberes Schneiden der Schneidmesser des Stanzwerkzeugs.Common to the various prior art punching force adjusting devices is that the punching force can only be adjusted globally, i. based on the entire surface of the crucible. Due to the design, however, an uneven punching force distribution over the surface of the crucible is present in all stamping and embossing machines according to the prior art. The punching force is introduced via individual force introduction points and thus does not affect the entire crucible surface. Depending on the rigidity of the crucible, there is a deformation of upper and lower table, which in turn results in an uneven punching pressure distribution over the surface of the crucible. Also height differences of the punching or Rillmesser, as well as the wear of the knife cause an uneven punching pressure distribution. The uneven punching pressure in turn causes an unclean cutting of the cutting blade of the punching tool.

Nach dem Stand der Technik wird dieses Problem gelöst, indem die Stanzmesser einzeln unterlegt werden. Je nach Abweichung von der Sollstanzkraft werden die Stanzmesser auf der Rückseite des Werkzeugs mit verschieden dicken Papier- oder Kunststoffstreifen hinterklebt. Dieses so genannte Zurichten ist sehr zeitintensiv und muss bei Maschinenstillstand geschehen. In Abhängigkeit von der Anzahl der Stanzmesser und der zu stanzenden Form kann das Zurichten mehrere Stunden dauern. Die hohe Rüstzeit hat eine geringe Maschinenproduktivität zur Folge.In the prior art, this problem is solved by the punching blades are individually highlighted. Depending on the deviation from the nominal punching force, the punching knives on the back of the tool are glued behind with paper or plastic strips of various thicknesses. This so-called trimming is very time-consuming and must be done at machine standstill. Depending on the number of punching blades and the shape to be punched, trimming can take several hours. The high set-up time results in low machine productivity.

Aus der DE 3620853 A1 ist eine Bogenstanzstation gemäß des Oberbegriffs des Anspruch 4 bekannt. Das zurichten wird bei dieser Vorrichtung auf die bisher übliche weise durchgeführt.From the DE 3620853 A1 a punching station according to the preamble of claim 4 is known. The judge will be performed in this device in the usual way.

Das übliche Vorgehen beim Zurichten eines Stanzwerkzeugs ist dabei das Folgende: nachdem ein Probebogen gestanzt wurde und erkennbar ist, an welchen Stellen eine Zurichtung erforderlich ist, wird das Stanzwerkzeug aus der Bogenstanzstation herausgezogen, die Abdeckplatte, welche auf der Stanzplatte aufliegt, händisch entfernt und beiseite gestellt. Damit ist die Stanzplatte zugänglich und es können Klebestreifen hinterklebt oder konturierte Zurichtebogen hinterlegt werden. Nach erfolgtem Zurichten wird die Abdeckplatte wieder auf die Stanzplatte aufgelegt und das Stanzwerkzeug zurück in die Stanzstation geschoben. Nachteilig bei diesem Vorgehen gemäß dem Stand der Technik ist das erforderliche Handhaben der Abdeckplatte. Bei großformatigen Stanzmaschinen ist die Abdeckplatte unhandlich und schwer, was eine Belastung für den Maschinenbediener darstellt. Weiter nachteilig ist der erforderliche Zeitbedarf für das Handhaben der Abdeckplatte. Auch problematisch kann das Zwischenlagern der Abdeckplatte während dem Zurichtprozess sein, da die Abdeckplatte dabei sicher abgestellt werden muss, um Beschädigungen an der Platte zu vermeiden.The usual procedure when trimming a punching tool is the following: after a test sheet has been punched and it is recognizable at which points a dressing is required, the punching tool is pulled out of the sheet punching station, the cover plate, which rests on the punching plate, removed by hand and set aside posed. Thus, the punching plate is accessible and adhesive tape can be pasted behind or contoured Zurichtebogen be deposited. After trimming the cover plate is placed back on the punching plate and pushed the punch back into the punching station. A disadvantage of this procedure according to the prior art is the required handling of the cover plate. In large-format punching machines, the cover plate is unwieldy and heavy, which is a burden for the machine operator. Another disadvantage is the time required for handling the cover plate. Also problematic can be the interim storage of Cover plate during the trimming process, since the cover must be placed securely in order to avoid damage to the plate.

Die Abdeckplatte muss leicht zu entfernen sein, damit diese bei Verschleiß einfach ausgetauscht werden kann und damit diese bei Verwendung der Stanzstation zum Heißprägen einfach beseitigt werden kann, um Bauraum für die Heißprägeeinheit zu schaffen.The cover plate must be easy to remove, so that it can be easily replaced when worn and so that when using the punching station for hot stamping can be easily removed to create space for the hot stamping unit.

Aufgabenstellungtask

Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren zum Zurichten eines Stanzwerkzeugs zu beschreiben und eine Bogenstanzstation als auch eine Flachbettbogenstanzmaschine zu schaffen, wobei jeweils die Nachteile des Standes der Technik verringert und ein weniger aufwändiges Zurichten eines Stanzwerkzeugs ermöglich wird.The object of the present invention is therefore to describe a method for trimming a punching tool and to provide a sheet punching station as well as a flatbed sheet punching machine, in each case reducing the disadvantages of the prior art and enabling a less complex trimming of a punching tool.

Gelöst wird diese Aufgabe durch ein Verfahren zum Zurichten mit den Merkmalen von Anspruch 1, durch eine Bogenstanzstation mit den Merkmalen von Anspruch 4 und durch eine Flachbettbogenstanzmaschine mit den Merkmalen von Anspruch 9.This object is achieved by a method for trimming with the features of claim 1, by a punching station with the features of claim 4 and by a flatbed sheet punching machine having the features of claim 9.

Das erfindungsgemäße Verfahren dient dem Zurichten eines Stanzwerkzeuges einer Bogenstanzstation, welche einen Obertisch und einen Untertisch aufweist. Die Bogenstanzstation ist dabei Teil einer Flachbettbogenstanzmaschine. Das Stanzwerkzeug weist eine Stanzplatte, an welcher Stanzmesser befestigt sind, und eine auf der Stanzplatte aufliegende Abdeckplatte auf. Zum Zurichten des Stanzwerkzeugs werden erfindungsgemäß die nachfolgenden Schritte abgearbeitet: in einem ersten Schritt erfolgt das Stanzen eines Probebogens in der Bogenstanzstation, wobei dieser Probebogen und damit der Zurichtbedarf beurteilt werden können. Nachfolgend erfolgt ein Fixieren der Abdeckplatte an dem Obertisch. Danach kann die Stanzplatte aus ihrer Arbeitsposition zwischen dem Obertisch und dem Untertisch in eine Zurichtposition ausgefahren werden, während die Abdeckplatte in der Bogenstanzstation an ihrer Position unterhalb des Obertischs verbleibt. Dadurch wird in vorteilhafter Weise ermöglicht, dass die Stanzplatte nach dem Ausfahren sofort zugänglich ist und ein Zurichten der Stanzplatte erfolgen kann, ohne dass, wie gemäß dem Stand der Technik üblich, noch die Abdeckplatte entfernt werden müsste. Nach erfolgtem Zurichten der Stanzplatte kann diese wieder zurück in ihre Arbeitsposition eingefahren werden und das Stanzwerkzeug ist einsatzbereit. Daraufhin kann die Fixierung der Abdeckplatte entweder aufgehoben werden oder auch während dem Stanzprozess beibehalten werden.The inventive method is used for trimming a punching tool of a punching station, which has an upper table and a lower table. The sheet punching station is part of a flatbed sheet punching machine. The punching tool has a punching plate, to which punching blades are fixed, and a cover plate resting on the punching plate. For trimming the punching tool, the following steps are carried out according to the invention: in a first step, punching of a test sheet takes place in the punching station, wherein this test sheet and thus the trimming need can be assessed. Subsequently, fixing the cover plate to the upper table. Thereafter, the punching plate can be extended from its working position between the upper table and the lower table in a trimming position, while the cover plate remains in the sheet punching station at its position below the upper table. This makes it possible in an advantageous manner that the punching plate is immediately accessible after extension and a trimming of the punching plate can take place, without that, as usual according to the prior art, nor the cover plate would have to be removed. After the trimming plate has been trimmed, it can be moved back into its working position and the punching tool is ready for use. Then, the fixation of the cover plate can either be canceled or maintained during the stamping process.

In vorteilhaften Ausführungsvarianten erfolgt das Fixieren der Abdeckplatte an dem Obertisch durch mechanisches Klemmen und/oder durch hydraulisches Klemmen und/oder durch magnetisches Halten und/oder durch pneumatisches Halten. Die verschiedenen Klemm-, bzw. Halteprinzipien können dabei alternativ oder sich gegenseitig ergänzend eingesetzt werden.In advantageous embodiments, the fixing of the cover plate to the upper table by mechanical clamping and / or by hydraulic clamping and / or by magnetic holding and / or by pneumatic holding. The various clamping or holding principles can be used alternatively or mutually complementary.

In einer besonders vorteilhaften und daher bevorzugten Ausführungsvariante geschieht das Fixieren durch pneumatisches Halten und an die Abdeckplatte wird hierzu ein Unterdruck angelegt. Diese Ausführungsvariante hat die Vorteile, dass im Gegensatz zum mechanischen Klemmen keine zusätzlichen, Bauraum erfordernden mechanischen Komponenten eingesetzt werden müssen und dass im Gegensatz zum hydraulischen Klemmen keine Hydraulikleitungen verlegt werden müssen und dass im Gegensatz zum magnetischen Halten das Fixieren unabhängig vom Material der Abdeckplatte ermöglicht wird. Ein weiterer Vorteil ergibt sich, wenn in der Bogenstanzstation bereits ein Unterdruckerzeuger bzw. eine Unterdruckquelle vorhanden ist, da diese für andere Funktionen gebraucht wird.In a particularly advantageous and therefore preferred embodiment, the fixing is done by pneumatic holding and to the cover plate, a negative pressure is applied for this purpose. This embodiment has the advantages that, in contrast to mechanical clamping no additional, space-requiring mechanical components must be used and that, in contrast to hydraulic clamping no hydraulic lines must be laid and that in contrast to magnetic holding the fixing is made possible regardless of the material of the cover , Another advantage is obtained when a vacuum generator or a vacuum source is already present in the sheet punching station, since this is used for other functions.

Die Erfindung betrifft auch die Bogenstanzstation einer Flachbettbogenstanzmaschine, welche insbesondere zur Durchführung des zuvor beschriebenen Verfahrens geeignet ist. Die Bogenstanzstation weist einen oberen Tiegel und einen unteren Tiegel auf, wobei einer der beiden Tiegel hubbewegt ist und wobei mit dem oberen Tiegel ein Stanzwerkzeug verbunden ist. Das Stanzwerkzeug weist eine Stanzplatte mit Stanzmessern und eine zwischen Stanzplatte und oberem Tiegel angeordnete Abdeckplatte auf. Erfindungsgemäß ist der obere Tiegel mit Saugöffnungen versehen und die Bogenstanzstation besitzt eine Unterdruckquelle bzw. einen Unterdruckerzeuger, welche bzw. welcher über Leitungen mit den Saugöffnungen des oberen Tiegels verbunden ist. Dadurch wird ermöglicht, dass die Abdeckplatte während dem Zurichten des Stanzwerkzeugs angesaugt werden kann, d.h. in anderen Worten: durch die Unterdruckquelle bzw. den Unterdruckerzeuger wird eine Saugluft bereitgestellt, durch welche die Abdeckplatte auch während dem Zurichten in ihrer Position unterhalb des oberen Tiegels gehalten werden kann. Die Stanzplatte erfährt dabei keine Saugkraft und kann zum Zurichten problemlos aus ihrer Arbeitsposition zwischen oberem Tiegel und unterem Tiegel herausgezogen werden. Es ist vorteilhaft, wenn die Saugöffnungen derart im oberen Tiegel angepasst sind, dass ausschließlich auf die Abdeckplatte eine Saugkraft wirkt.The invention also relates to the sheet punching station of a flatbed sheet punching machine, which is particularly suitable for carrying out the method described above. The punching station has an upper crucible and a lower crucible, wherein one of the two crucibles is stroke-moved and wherein a punching tool is connected to the upper crucible. The punching tool has a punching plate with punching blades and a cover plate arranged between the punching plate and the upper pot. According to the invention, the upper crucible is provided with suction openings and the sheet punching station has a vacuum source or a vacuum generator, which is connected via lines to the suction openings of the upper crucible. This will allow that the cover plate can be sucked in during the trimming of the punching tool, ie in other words: a suction air is provided by the vacuum source or the vacuum generator, by means of which the cover plate can be kept in its position below the upper crucible during trimming. The punching plate experiences no suction and can be easily pulled out for trimming from its working position between the upper crucible and lower crucible. It is advantageous if the suction openings are adapted in the upper crucible so that a suction force acts exclusively on the cover plate.

In vorteilhafter Weiterbildung wird die Stanzplatte von einem Schließrahmen gehalten, was ein einfaches Handhaben und eine einfache Positionierung der Stanzplatte ermöglicht.In an advantageous embodiment, the punching plate is held by a closing frame, which allows easy handling and easy positioning of the punching plate.

In vorteilhafter Weiterbildung der erfindungsgemäßen Bogenstanzstation stellt die Unterdruckquelle bzw. der Unterdruckerzeuger auch an dem unteren Tiegel eine Saugluft bereit, welche dem Ansaugen eines Stanzblechs während des Stanzvorgangs dient.In an advantageous development of the sheet punching station according to the invention, the vacuum source or the vacuum generator also provides suction air at the lower pot, which serves for sucking a punching plate during the punching operation.

In einer Weiterbildung der erfindungsgemäßen Bogenstanzstation besitzt diese eine Maschinensteuerung und ein Bediener-Interface zur Steuerung der Saugluft. Dadurch kann beispielsweise vom Maschinenbediener bestimmt werden, ob die Abdeckplatte während des Zurichtvorgangs in der Bogenstanzstation verbleiben soll, oder ob diese zusammen mit der Stanzplatte ausgefahren werden soll.In a further development of the punching station according to the invention this has a machine control and an operator interface for controlling the suction air. As a result, it can be determined by the machine operator, for example, whether the cover plate should remain in the sheet punching station during the trimming process, or whether it should be extended together with the stamping plate.

Die Erfindung betrifft auch eine Flachbettbogenstanzmaschine mit einer wie obenstehend beschriebenen Bogenstanzstation zur Durchführung eines wie obenstehend beschriebenen Verfahrens zum Zurichten eines Stanzwerkzeuges.The invention also relates to a flatbed sheet punching machine having a punching station as described above for carrying out a method for trimming a punching tool as described above.

Die beschriebene Erfindung und die beschriebenen vorteilhaften Weiterbildungen der Erfindung stellen auch in beliebiger Kombination miteinander vorteilhafte Weiterbildungen der Erfindung dar.The described invention and the described advantageous developments of the invention are also in any combination with each other advantageous developments of the invention.

Hinsichtlich weiterer Vorteile und in konstruktiver und funktioneller Hinsicht vorteilhafter Ausgestaltungen der Erfindung wird auf die Unteransprüche sowie die Beschreibung von Ausführungsbeispielen unter Bezugnahme auf die beiliegenden Zeichnungen verwiesen.With regard to further advantages and constructive and functional aspects of advantageous embodiments of the invention, reference is made to the dependent claims and the description of embodiments with reference to the accompanying drawings.

Ausführungsbeispielembodiment

Die Erfindung soll an Hand bevorzugter Ausführungsbeispiele noch näher erläutert werden. Es zeigen in schematischer Darstellung

Figur 1:
eine Übersichtsdarstellung einer erfindungsgemäßen Flachbettbogenstanzmaschine
Figur 2a:
die Situation beim Zurichten gemäß dem Stand der Technik
Figuren 2b bis 2d:
die Situation beim Zurichten gemäß der Erfindung.
The invention will be explained in more detail with reference to preferred embodiments. It show in a schematic representation
FIG. 1:
an overview of a flat-bed sheet punching machine according to the invention
FIG. 2a:
the situation when trimming according to the prior art
FIGS. 2b to 2d:
the situation when dressing according to the invention.

Einander entsprechende Elemente und Bauteile sind in den Figuren mit gleichen Bezugszeichen versehen.Corresponding elements and components are provided in the figures with the same reference numerals.

In Figur 1 ist der prinzipielle Aufbau einer Bogenstanz- und -prägemaschine 100 zum Stanzen, Ausbrechen, Nutzentrennen und Ablegen von Bogen aus Papier, Pappe, Kunststoff und dergleichen dargestellt. Die Stanz- und Prägemaschine 100 besitzt einen Anleger 1, eine Stanzstation 2, eine Ausbrechstation 3 und einen Ausleger 4 mit Ablageund Nutzentrennstation, die von einem gemeinsamen Maschinengehäuse 5 getragen und umschlossen werden und von einem Hauptantrieb 17 angetrieben werden. Von einer Seite, der sogenannten Bedienerseite, sind die Bearbeitungsstationen 2, 3, 4 zugänglich; auf der gegenüberliegenden Seite, der sogenannten Antriebsseite, befindet sich der Antriebsstrang der Bogenstanz- und -prägemaschine 100. Eine Maschinensteuerung 15 steuert die Abläufe innerhalb der Stanzmaschine 100.In FIG. 1 the basic structure of a sheet punching and embossing machine 100 for punching, breaking, Nutzentrennen and storing sheets of paper, cardboard, plastic and the like is shown. The punching and embossing machine 100 has a feeder 1, a punching station 2, a breakout station 3 and a boom 4 with storage and Nutzentrennstation, which are supported by a common machine housing 5 and enclosed and driven by a main drive 17. From one side, the so-called operator side, the processing stations 2, 3, 4 are accessible; on the opposite side, the so-called drive side, there is the drive train of the sheet punching and embossing machine 100. A machine control 15 controls the processes within the punching machine 100.

Die Bogen 6 werden durch einen Anleger 1 von einem Stapel vereinzelt, dem Bogentransportsystem 7 zugeführt und von an Greiferbrücken eines Greiferwagens 8 befestigten Greifern an ihrer Vorderkante ergriffen und in Bogentransportrichtung B intermittierend durch die verschiedenen Stationen 2, 3 und 4 der Stanz- und Prägemaschine 100 hindurchgezogen.The sheet 6 are separated by a feeder 1 from a stack, fed to the sheet transport system 7 and from on gripper bars of a gripper carriage. 8 gripped grippers taken at its front edge and pulled in the sheet transport direction B intermittently through the various stations 2, 3 and 4 of the punching and embossing machine 100.

Das Bogentransportsystem 7 besitzt mehrere Greiferwagen 8, sodass mehrere Bogen 6 gleichzeitig in den verschiedenen Stationen 2, 3 und 4 bearbeitet werden können. Die Greiferwagen 8 können von einem Kettenantrieb oder in einer alternativen Ausführungsform durch einen elektromagnetischen Linearantrieb mit Wanderfeldmotoren angetrieben werden, wie beispielsweise in der DE 20 2007 012 349 U1 beschrieben.The sheet transport system 7 has a plurality of gripper carriages 8, so that a plurality of sheets 6 can be processed simultaneously in the various stations 2, 3 and 4. The gripper carriage 8 can be driven by a chain drive or in an alternative embodiment by an electromagnetic linear drive with traveling wave motors, such as in the DE 20 2007 012 349 U1 described.

Die Stanzstation 2 besteht aus einem unteren Tiegel, einem sog. Untertisch 9, und einem oberen Tiegel, einem sog. Obertisch 10. Der Obertisch 10 ist vertikal hin- und herbewegbar gelagert und mit einem Oberwerkzeug 30 mit Stanz- und Rillmessern versehen. Der Untertisch 9 ist fest im Maschinengestell gelagert und mit einer Gegenplatte 20 zu den Stanz- und Rillmessern versehen. Alternativ kann auch der Obertisch 10 feststehend und der Untertisch 9 bewegt sein. Beim Prägen kommen an Stelle der Stanzund Rillwerkzeuge Prägewerkzeuge, insbesondere in Form sogenannter Prägeklischees, zum Einsatz.The punching station 2 consists of a lower crucible, a so-called. Subtable 9, and an upper crucible, a so-called. Obertisch 10. The upper table 10 is vertically reciprocally mounted and provided with an upper tool 30 with punching and Rillmessern. The lower table 9 is fixedly mounted in the machine frame and provided with a counter-plate 20 to the punching and Rillmessern. Alternatively, the upper table 10 fixed and the lower table 9 may be moved. When embossing, embossing tools, in particular in the form of so-called embossing dies, are used instead of the punching and scoring tools.

Der Greiferwagen 8 transportiert den Bogen 6 von der Stanz- und Prägestation 2 in die nachfolgende Ausbrechstation 3, die mit Ausbrechwerkzeugen 21, 23 ausgestattet ist. In der Ausbrechstation 3 werden mit Hilfe der Ausbrechwerkzeuge 21, 23 die nicht benötigten Abfallstücke 11 aus dem Bogen 6 nach unten herausgestoßen, wodurch die Abfallstücke 11 in einen unter der Station eingeschobenen wagenartigen Behälter 12 fallen.The gripper carriage 8 transports the sheet 6 from the punching and embossing station 2 in the subsequent breaking station 3, which is equipped with breakout tools 21, 23. In the breaking station 3, the waste pieces 11 which are not required are pushed out of the sheet 6 downward with the aid of the breaking-out tools 21, 23, whereby the waste pieces 11 fall into a carriage-like container 12 inserted below the station.

Von der Ausbrechstation 3 gelangt der Bogen 6 in den Ausleger 4, wo der Bogen 6 entweder nur einfach abgelegt wird, oder aber gleichzeitig eine Trennung der einzelnen Nutzen eines jeweiligen Bogens 6 erfolgt. Dazu besitzt der Ausleger 4 ein Nutzentrennwerkzeug 21, 23. Der Ausleger 4 kann auch eine Palette 13 enthalten, auf der die einzelnen Bogen 6 bzw. Nutzen in Form eines Stapels 14 aufgestapelt werden, so dass nach Erreichen einer bestimmten Stapelhöhe die Palette 13 mit dem Bogenstapel 14 aus dem Bereich der Stanz- und Prägemaschine 100 weggefahren werden kann. Um die Maschine 100 während des Stapeltausches nicht anhalten zu müssen können Hilfsstapeleinrichtungen zum Einsatz kommen.From the breaking station 3, the sheet 6 enters the boom 4, where the sheet 6 is either simply stored, or at the same time there is a separation of the individual benefits of each sheet 6. The boom 4 may also include a pallet 13, on which the individual sheets 6 or benefits in the form of a stack 14 are stacked, so that after reaching a certain stack height, the pallet 13 with the Sheet stack 14 can be moved away from the area of the punching and embossing machine 100. To the To prevent machine 100 from being stopped during stacking, auxiliary stacking devices may be used.

Figur 2a zeigt die Situation beim Zurichten gemäß dem Stand der Technik. Um die Stanzplatte 31 zurichten zu können, wird das Stanzwerkzeug 30 aus einer Arbeitsposition zwischen dem Obertisch 10 und dem Untertisch 9 der Stanzstation 2 in Richtung a aus der Stanzstation 2 herausgefahren. Damit die Rückseite der Stanzplatte 31 zugänglich ist und mit Klebestreifen beklebt oder mit Zurichtebogen belegt werden kann, muss die Abdeckplatte 32 wie durch Pfeil e dargestellt entfernt und beiseite gestellt werden. FIG. 2a shows the situation when trimming according to the prior art. In order to be able to align the punching plate 31, the punching tool 30 is moved out of the punching station 2 from a working position between the upper table 10 and the lower table 9 of the punching station 2 in the direction a. So that the back of the punching plate 31 is accessible and can be glued with adhesive tape or covered with trimming sheet, the cover plate 32 must be removed as shown by arrow e and set aside.

In den Figuren 2b bis d ist die Situation beim Zurichten gemäß der Erfindung dargestellt. Der Obertisch 10 ist dazu mit Saugöffnungen 41 versehen, welche über Leitungen mit einem Unterdruckerzeuger bzw. einer Unterdruckquelle 40 verbunden sind. Dadurch wird an den Saugöffnungen 41 eine Saugluft bereitgestellt, welche eine Saugkraft S auf die Abdeckplatte bewirkt. Soll die Stanzplatte 31 zugerichtet werden, so wird die Saugluft aktiviert und die Saugkraft auf die Abdeckplatte 32 wirksam. Die Abdeckplatte 32 wird so gegen den Obertisch 10 gezogen und dort in ihrer Position gehalten. Daraufhin kann die Stanzplatte 31 aus ihrer Arbeitsposition zwischen Obertisch 10 und Untertisch 9 in Pfeilrichtung a herausgezogen werden. Da die Abdeckplatte 32 in der Stanzstation 2 in ihrer Position direkt unterhalb des Obertischs 10 verbleibt, ist die Rückseite der Stanzplatte 31 sofort zugänglich und der Maschinenbediener kann mit dem Zurichten beginnen, ohne die Abdeckplatte 32 entfernen zu müssen. Zurichteband 33 kann so einfach aufgeklebt und Zurichtebogen (Nicht dargestellt) einfach aufgelegt werden.In the FIGS. 2b to d the situation when dressing according to the invention is shown. The upper table 10 is provided for this purpose with suction openings 41, which are connected via lines to a vacuum generator or a vacuum source 40. Thereby, a suction air is provided at the suction openings 41, which causes a suction force S on the cover plate. If the punching plate 31 are to be dressed, the suction air is activated and the suction force on the cover plate 32 is effective. The cover plate 32 is pulled against the upper table 10 and held there in position. Then the punching plate 31 can be pulled out of its working position between the upper table 10 and lower table 9 in the direction of arrow a. Since the cover plate 32 remains in its position directly below the upper table 10 in the stamping station 2, the rear side of the punching plate 31 is immediately accessible and the machine operator can start trimming without having to remove the cover plate 32. Dressing tape 33 can be easily glued and dressing sheets (Not shown) simply placed.

Wie in Fig. 2d dargestellt, kann über entsprechende Ansteuerung durch die Steuerung 15 die Saugkraft beim Herausfahren a des Stanzwerks 30 deaktiviert bleiben, so dass, wenn gewünscht, die Stanzplatte 31 zusammen mit der Abdeckplatte 32 herausgefahren werden kann. Dies kann beispielsweise dann erforderlich sein, wenn die in der Stanzstation 2 vorhandene Abdeckplatte 32 durch eine andere Abdeckplatte 32 ersetzt werden soll.As in Fig. 2d represented by appropriate control by the controller 15, the suction force during retraction a of the punching 30 remain disabled, so that, if desired, the punching plate 31 can be moved out together with the cover plate 32. This may be necessary, for example, if the cover plate 32 present in the stamping station 2 is to be replaced by another cover plate 32.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Anlegerinvestor
22
Stanz- und/oder PrägestationPunching and / or embossing station
33
Ausbrechstationstripping
44
Ausleger, ggfs. mit NutzentrennstationOutrigger, if necessary with Nutzentrennstation
55
Maschinengehäusemachine housing
66
Bogenbow
77
BogentransportsystemSheet transport system
88th
Greiferwagen mit GreifernGripper carriage with grippers
99
Untertisch / unterer TiegelLower table / lower crucible
1010
Obertisch / oberer TiegelUpper table / upper crucible
1111
Abfallstücketrimmings
1212
Behältercontainer
1313
Palettepalette
1414
Auslagestapeldelivery pile
1515
Steuerung mit Interface und EingabegerätenControl with interface and input devices
1616
Zuführtisch mit einer Einheit zum Ausrichten der BogenFeed table with a unit for aligning the bow
1717
Hauptantriebmain drive
2020
Unterwerkzeuglower tool
2121
Oberwerkzeug mit StempelnUpper tool with punches
2323
Nutzentrenngitter oder Ausbrechbrett (Unterwerkzeug)Dividing grille or stripping board (lower tool)
3030
Oberwerkzeug (Stanzwerkzeug)Upper tool (punching tool)
3131
Stanzplatte mit StanzmessernPunching plate with punching blades
3232
Abdeckplattecover
3333
Zurichteband / ZurichtebogenDressing Tape / Dressing Sheet
4040
UnterdruckerzeugerVacuum generator
4141
Saugöffnungensuction ports
4242
Leitungencables
100100
Flachbett-Bogenstanz- und/oder -prägemaschine (Stanzmaschine)Flatbed sheet punching and / or embossing machine (punching machine)
aa
Herausfahren des StanzwerkzeugsMoving out of the punching tool
ee
Entfernen der AbdeckplatteRemove the cover plate
BB
BogentransportrichtungSheet transport direction
Ee
BogentransportebeneSheet transport plane
SS
Saugkraftsuction

Claims (9)

  1. A method for adjusting a punching tool (30) of a sheet punching station (2) having a top table (10) and a bottom table (9) of a flat bed sheet punching machine (100), wherein said punching tool (30) comprises a punching plate (31) provided with punching knives and a covering plate (32),
    comprising the following steps:
    a) punching a test sheet in said sheet punching station (2)
    b) fixing said covering plate (32) to the top table (10)
    c) extending said punching plate (31) from it's working position between said top table (10) and said bottom table (9) to an adjusting position
    d) adjusting said punching plate (31)
    e) retracting said punching plate (31) to it's working position.
  2. A process for adjusting according to claim 1,
    characterized in that
    said fixing in step b) is carried out by mechanical clamping and/or hydraulic clamping and/or magnetic clamping and/or pneumatic clamping.
  3. A process for adjusting according to claim 2,
    characterized in that
    said fixing in step b) is carried out by pneumatic clamping and that a vacuum is applied to said covering plate.
  4. A sheet punching station (2) of a flat bed sheet punching machine (100), particularly for carrying out the process according to claim 3, comprising a top table (10) and a bottom table (9), one of said tables being liftable, and further comprising a punching tool (30) connected to said top table (10) and having a punching plate (31) provided with punching knives and a having a covering plate (32),
    wherein said covering plate (32) is arranged between the punching plate (31) and said top table (10),
    characterized in that
    said top table (10) is provided with suction holes (41) and the sheet punching station (2) is provided with a vacuum source or a vacuum generator (40) which is connected to said suction holes (41) of said top table (10) through pipes (42), for aspirating said covering plate (32) while said punching tool (30) is adjusted, wherein said punching plate (31) is not subjected to a suction force (S).
  5. A sheet punching station according to claim 4
    characterized in that
    said suction holes are arranged in said top table (10) such that a suction force (S) acts only on said covering plate (32).
  6. A sheet punching station according to claim 4 or 5,
    characterized in that
    said punching plate (31) is held by a closing frame.
  7. A sheet punching station according to any one of claims 4 to 6,
    characterized in that
    said vacuum source or said vacuum generator (40) provides suction air at the bottom table for aspirating a punching sheet (20).
  8. A sheet punching station according to any one of claims 4 to 7,
    characterized in that
    said sheet punching station (2) comprises a machine control system and a user interface (15) for controlling the suction air.
  9. A flat bed sheet punching machine (100) comprising a sheet punching station (2) according to any one of claims 4 to 8.
EP12180978.4A 2011-09-21 2012-08-20 Method for adjusting a stamping tool and sheet stamping station with covering panel that can be held using suction Active EP2572843B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011113993A DE102011113993A1 (en) 2011-09-21 2011-09-21 Method for trimming a punching tool and punching station with a suctionable cover plate

Publications (2)

Publication Number Publication Date
EP2572843A1 EP2572843A1 (en) 2013-03-27
EP2572843B1 true EP2572843B1 (en) 2015-11-04

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CN (1) CN103009433B (en)
DE (1) DE102011113993A1 (en)
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DE202004007719U1 (en) * 2003-09-04 2004-09-23 Metall + Plastic Gmbh Device for punching packaging elements or the like.
DE202007012349U1 (en) 2006-07-26 2007-12-13 Heidelberger Druckmaschinen Ag Sheet punching and embossing machine with register alignment
DE102009056169A1 (en) * 2009-11-27 2011-06-01 Heidelberger Druckmaschinen Ag Method of trimming tools

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107009427A (en) * 2017-05-11 2017-08-04 昆山佑威光电材料有限公司 The improved set of waste discharge rushes die-cutting machine

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CN103009433A (en) 2013-04-03
TW201318800A (en) 2013-05-16
EP2572843A1 (en) 2013-03-27
DE102011113993A1 (en) 2013-03-21
CN103009433B (en) 2016-08-10
TWI579127B (en) 2017-04-21
ES2560379T3 (en) 2016-02-18

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