EP1240986B1 - Press-cutting device with suction and blowing means - Google Patents

Press-cutting device with suction and blowing means

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Publication number
EP1240986B1
EP1240986B1 EP02005516A EP02005516A EP1240986B1 EP 1240986 B1 EP1240986 B1 EP 1240986B1 EP 02005516 A EP02005516 A EP 02005516A EP 02005516 A EP02005516 A EP 02005516A EP 1240986 B1 EP1240986 B1 EP 1240986B1
Authority
EP
European Patent Office
Prior art keywords
stamping
suction
arrangement according
sheet
printed
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
Application number
EP02005516A
Other languages
German (de)
French (fr)
Other versions
EP1240986A3 (en
EP1240986A2 (en
EP1240986B2 (en
Inventor
Eugen c/o Offsetdruck Nürnberg GmbH & Co. Wimmer
Thomas c/o Offsetdruck Nürnberg GmbH & Co. Mück
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Offsetdruck Nuernberg & Co Papierverarbeitu GmbH
Original Assignee
Offsetdruck Nuernberg & Co Papierverarbeitungs-Kg GmbH
Offsetdruck Nuernberg & C GmbH
Offsetdruck Nuernberg & Co Papierverarbeitungs-Kg GmbH
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Application filed by Offsetdruck Nuernberg & Co Papierverarbeitungs-Kg GmbH, Offsetdruck Nuernberg & C GmbH, Offsetdruck Nuernberg & Co Papierverarbeitungs-Kg GmbH filed Critical Offsetdruck Nuernberg & Co Papierverarbeitungs-Kg GmbH
Publication of EP1240986A2 publication Critical patent/EP1240986A2/en
Publication of EP1240986A3 publication Critical patent/EP1240986A3/en
Application granted granted Critical
Publication of EP1240986B1 publication Critical patent/EP1240986B1/en
Publication of EP1240986B2 publication Critical patent/EP1240986B2/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1845—Means for removing cut-out material or waste by non mechanical means
    • B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
    • B41F13/56—Folding or cutting

Definitions

  • the invention relates to a punching arrangement referred to in the preamble of claim 1 Art.
  • the punching in offset printing multicolored printed sheet is carried out expedient manner after the last printing unit, as in particular by the punching of openings in the sheet they lose stability, so that a more accurate printing would be difficult or impossible. It should be noted that the sheets to be printed in offset sheet-fed presses are always taken on their leading edge and passed on when passing through the respective printing units.
  • Such a stamping plant comprises a first cylinder, which generally has such a large diameter that it rotates only once for the processing of several successive sheets. He carries on its otherwise smooth lateral surface a plurality of circumferentially successively arranged, so-called punching plates whose number corresponds to the number of sheets to be processed in a full revolution of this punching cylinder. With this arrangement can then be punched a punched in each sheet. If several punched pieces are to be punched in a sheet, so can be arranged on the outer surface of the punching cylinder for each sheet and a plurality of punching plates and positioned offset from each other in the circumferential direction and / or axial direction.
  • punching plates are only about 0.8 mm over the smooth surface of the punching cylinder radially projecting burrs or cutting, whose contour determines the shape of the punched to be punched.
  • punching is meant to be here expressed that the contour is not continuous, but has interruptions, so that the diecut is not completely punched out but by connecting webs, which remain due to these interruptions between him and the rest of the bow, with remains connected to the bow. This will be explained in more detail below with reference to FIG. 3b.
  • the punching is carried out in that opposite to the punching cylinder, a further cylinder is arranged with a smooth, hard surface, which presses the passing through the gap between the two cylinders arc against the projecting punched metal burrs.
  • the sheets After punching the sheets are stacked to dry each other. If the drying process progressed so far that it can no longer lead to blurring of the colors, the stacked stampings are cut out of several sheet comprehensive stacks characterized in that their connecting webs to the respective sheet with a suitable tool by machine or by hand in a separate Operation be severed.
  • the invention has for its object to provide a punching arrangement referred to in the preamble of claim 1 way, which can be arranged immediately behind the last printing unit of the offset sheet printing machine without the risk of blurring the last printed ink.
  • the punching tool is formed so that no connecting webs remain between the punched pieces and the rest of the sheet, d. H. the diecuts are completely punched free.
  • a fixed during operation suction device is provided which generates a negative pressure immediately above the surface of the respective sheet, through which the liberated punched product is sucked.
  • a stationary during operation fan means which presses with the aid of a gas flow, the sheet to its contact surface despite the negative pressure generated by the suction and stabilized
  • fixed during operation is intended to express that the device in question does not move during operation, in particular does not participate in the movements necessary for the further transport and punching of the printed sheets.
  • fixed positions of both the suction and blower means during operation can be varied to accommodate the generally different product to product positions of the diecuts to be produced.
  • blower device as a suction device, which draws the sheet against the contact surface by means of a negative pressure generated on the side of the contact surface opposite the sheet and provided by holes provided in the contact surface.
  • the blower device operates at overpressure and comprises at least one fixed during operation nozzle, which is arranged on the same side of the sheet as the suction and in the immediate vicinity of the punching area a gas stream, preferably a compressed air flow directed against the sheet, by which he counter the effect of the negative pressure of the suction device is pressed against the contact surface and stabilized there.
  • a punching arrangement 1 comprises two cylinders 2, 3 rotating in the direction of the arrows R1, R2, each having a steel peripheral surface, of which the larger cylinder 2 is diametrically opposed on its otherwise completely smooth lateral surface arranged punching plates 4, 4 carries.
  • the position of the sheet 6 relative to the punching plates 4, 4 is shown in Fig. 1 so that the punching is completely within the surface of the sheet 6, so that a window is formed by the punching process, which is surrounded on all sides by sheet material.
  • the punching arrangement according to the invention is not limited thereto.
  • the punching plates 4, 4, of which also several can be provided for each sheet to be processed 6, can also be arranged so that at least one of them punched a punched product at the edge of the relevant sheet 6.
  • suction 8 enters a suction device 11, from which it is sucked off after the complete free dancing.
  • the suction opening 9 is actually located at a much smaller distance directly above the lateral surface of the cylinder 2, as shown in FIG. 1.
  • the distance between the underside of the funnel 8 adapted to the curvature of the cylinder 2 and the lateral surface of the cylinder 2 is between 0.5 cm and 1.5 cm and is preferably about 1 cm.
  • the outlet opening located at the tapered end 10 of the suction funnel 8 opens directly into a suction line 12, which is connected at its end, not shown, to a blower device generating a negative pressure and to a collecting device for receiving the extracted punched pieces.
  • a slide 13 is provided, with the aid of which the strength of the negative pressure can be regulated, through which the punched pieces are sucked.
  • this slide as shown in Fig. 1, directed so obliquely to the longitudinal axis of the suction line 12, that its upper, the width of the passage affecting edge of the suction hopper 8 is farther. This prevents sucked punched pieces accumulate on the slide 13 and the suction line 12 can clog.
  • the size of the suction port 9 of the suction hopper 8 is adjustable in order to optimally adapt to different punching unit sizes ..
  • the punching arrangement 1 further comprises a blower device 14 fixed during operation. 2 of which only one supply line 16 for compressed air is reproduced, which opens into two distribution lines 17, 17 ', each of which in turn in two branch lines 18, 19 and 18', 19 'for each suction funnel 8, the eighth ', which opens in each case via a manifold 20 in three flexible nozzle lines 21, 22, 23 and 24, 25, 26 and 21', 22 ', 23' and 24 ', 25', 26 '.
  • Each of the nozzle lines 21 to 26 ' carries at its free end a nozzle 30 which is located at a small distance above the lateral surface of the cylinder 2.
  • the distance of the nozzles 30 from the lateral surface of the cylinder 2 is preferably in the range of 2 cm to 4 cm.
  • the compressed air emerging from the nozzles 30 which are stationary during operation and which can be regulated in their strength by means of a pressure regulator (not shown) provided in the supply line 16 presses the sheet 6 passing under the nozzles 30 against the jacket surface of the cylinder 2, so that the sheet 6 despite the negative pressure generated by the respective hopper 8 and 8 'in the area in which the liberated punching moves due to the forward movement of the sheet 6, remains stable and can be easily forwarded. It is essential that the freshly printed on his top and therefore still wet sheet 6 remains non-contact on this page and thus blurring of the colors is avoided.
  • a manually operable valve 31, 32 and 31 ', 32' is provided, with the help of the compressed air supply to the nozzle 30 in question can be turned off ,
  • nozzles 30 Commercially available cooling nozzles for drill stands can be used whose opening has a diameter of about 5 mm. It has been found that an admission of the nozzles 30 with an overpressure of 4 bar is advantageous.
  • the nozzles 30 are arranged in the immediate vicinity of the outer surfaces of the suction funnels 8 and 8 'whose inlet openings 9 and 9' are only slightly larger than the respective blank to be sucked off. This ensures that the sheets 6 are pressed by the emerging from the nozzle 30 compressed air in the immediate vicinity of the area to the lateral surface of the cylinder 2, in which the associated suction funnel 8 generates a negative pressure, which otherwise could lead to lift the sheet 6 from the lateral surface of the cylinder 2. Due to the flexibility of the nozzle lines 21 to 25 ', the nozzles 30 can be pivoted within wide ranges and thus their configuration can be adapted to the contour of the suction opening 9 or 9' to the associated suction funnel 8 or 8 '.
  • FIGS. 3a and 3b a cutout 35 or 35 'of the lateral surface of a cylinder 2 is reproduced, with the actually curved lateral surface cutout 35 or 35' being shown for the sake of clarity.
  • Each of the two lateral surface cutouts 35 and 35 ' carries a stamped sheet 4 or 4', wherein the former is formed according to the invention, while the latter corresponds to the prior art.
  • the two 4, 4 ' are each about 0.8 mm above the lateral surface of the respective cylinder 2 in the radial direction.
  • the punching plates 4 are formed continuously, so that the diecut is completely punched free.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Details Of Cutting Devices (AREA)
  • Discharge By Other Means (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Massaging Devices (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

The offset printing machine is combined with a stamping machine (1), which makes holes in a printed piece of paper. There is a large drum (2), carrying e.g. two stamping tools (4) with sharp edges. The tools press the paper sheets (6) against a smaller pressure drum (3), so that the sharp edges cut through the paper. The rotation of the drum then carries the paper under a suction hood (8) with nozzles (30) for pressurized air at the sides.

Description

Die Erfindung betrifft eine Stanzanordnung der im Oberbegriff von Anspruch 1 genannten Art.The invention relates to a punching arrangement referred to in the preamble of claim 1 Art.

Das Stanzen von im Offsetdruck mehrfarbig bedruckten Bogen erfolgt zweckmäßiger Weise nach dem letzten Druckwerk, da insbesondere durch das Stanzen von Öffnungen in den Bogen diese an Stabilität verlieren, so daß ein weiteres paßgenaues Drucken schwierig bzw. unmöglich würde. Dabei ist zu berücksichtigen, daß die zu bedruckenden Bogen in Offset-Bogendruckmaschinen beim Durchlauf durch die jeweiligen Druckwerke immer nur an ihrer Vorderkante ergriffen und weiterbefördert werden.The punching in offset printing multicolored printed sheet is carried out expedient manner after the last printing unit, as in particular by the punching of openings in the sheet they lose stability, so that a more accurate printing would be difficult or impossible. It should be noted that the sheets to be printed in offset sheet-fed presses are always taken on their leading edge and passed on when passing through the respective printing units.

Da beim Offsetdruck feucht in feucht gedruckt wird, ist es wichtig, daß frisch bedruckte Oberflächenbereiche nur mit Drucktüchern, von denen die Druckfarbe übertragen wird, in Berührung kommen.Since printing is wet to wet in offset printing, it is important that freshly printed surface areas come into contact only with blankets from which the ink is transferred.

Es ist bekannt, hinter dem letzten Druckwerk einer Offset-Druckmaschine ein spezielles Stanzwerk vorzusehen, das ähnlich aufgebaut ist, wie die Druckwerke und mit diesen im Gleichtakt arbeitet. Ein solches Stanzwerk umfaßt einen ersten Zylinder, der im allgemeinen einen so großen Durchmesser aufweist, daß er sich für die Bearbeitung mehrerer aufeinanderfolgender Bogen nur einmal dreht. Er trägt auf seiner ansonsten glatten Mantelfläche mehrere, in Umfangsrichtung hintereinander angeordnete, sogenannte Stanzbleche, deren Anzahl der Anzahl der Bogen entspricht, die bei einer vollen Umdrehung dieses Stanzzylinders bearbeitet werden sollen. Mit dieser Anordnung kann dann in jedem Bogen ein Stanzling angestanzt werden. Sollen mehrere Stanzlinge in einem Bogen angestanzt werden, so können für jeden Bogen auch mehrere Stanzbleche auf der Mantelfläche des Stanzzylinders angeordnet und gegeneinander in Umfangsrichtung und/oder axialer Richtung versetzt positioniert sein.It is known to provide behind the last printing unit of an offset printing machine, a special punching, which is similar in structure, as the printing units and works with them in common mode. Such a stamping plant comprises a first cylinder, which generally has such a large diameter that it rotates only once for the processing of several successive sheets. He carries on its otherwise smooth lateral surface a plurality of circumferentially successively arranged, so-called punching plates whose number corresponds to the number of sheets to be processed in a full revolution of this punching cylinder. With this arrangement can then be punched a punched in each sheet. If several punched pieces are to be punched in a sheet, so can be arranged on the outer surface of the punching cylinder for each sheet and a plurality of punching plates and positioned offset from each other in the circumferential direction and / or axial direction.

Diese bekannten Stanzbleche sind nur etwa 0,8 mm über die glatte Mantelfläche des Stanzzylinders radial vorstehende Grate bzw. Schneiden, deren Kontur die Form des anzustanzenden Stanzlings bestimmt. Mit dem Ausdruck "anstanzen" soll hier zum Ausdruck gebracht werden, daß die Kontur nicht durchgehend ist, sondern Unterbrechungen aufweist, so daß der Stanzling nicht vollständig ausgestanzt wird sondern durch Verbindungsstege, die aufgrund dieser Unterbrechungen zwischen ihm und dem Rest des Bogens stehenbleiben, mit dem Bogen verbunden bleibt. Dies wird weiter unten unter Bezugnahme auf Fig. 3b noch genauer erläutert.These known punching plates are only about 0.8 mm over the smooth surface of the punching cylinder radially projecting burrs or cutting, whose contour determines the shape of the punched to be punched. By the term "punching" is meant to be here expressed that the contour is not continuous, but has interruptions, so that the diecut is not completely punched out but by connecting webs, which remain due to these interruptions between him and the rest of the bow, with remains connected to the bow. This will be explained in more detail below with reference to FIG. 3b.

Das Stanzen erfolgt dadurch, daß gegenüber dem Stanzzylinder ein weiterer Zylinder mit einer glatten, harten Oberfläche angeordnet ist, der die durch den Spalt zwischen den beiden Zylindern hindurchlaufenden Bogen gegen die vorstehenden Stanzblech-Grate drückt.The punching is carried out in that opposite to the punching cylinder, a further cylinder is arranged with a smooth, hard surface, which presses the passing through the gap between the two cylinders arc against the projecting punched metal burrs.

Nach erfolgtem Stanzen werden die Bogen zum Trocknen aufeinander gestapelt. Ist der Trocknungsvorgang soweit fortgeschritten, daß es nicht mehr zu einem Verwischen der Farben kommen kann, so werden aus mehrere Bogen umfassenden Stapeln die übereinander liegenden Stanzlinge dadurch herausgetrennt, daß ihre Verbindungsstege zu den jeweiligen Bogen mit einem geeigneten Werkzeug maschinell oder von Hand in einem gesonderten Arbeitsgang durchtrennt werden.After punching the sheets are stacked to dry each other. If the drying process progressed so far that it can no longer lead to blurring of the colors, the stacked stampings are cut out of several sheet comprehensive stacks characterized in that their connecting webs to the respective sheet with a suitable tool by machine or by hand in a separate Operation be severed.

Dabei ergibt sich das Problem, daß die Stege häufig nicht sauber reißen und sichtbare Reste am Druckprodukt stehen bleiben. Auch können einzelne Stanzlinge an dem zugehörigen Bogen hängenbleiben und sich insbesondere umklappen, wodurch die Weiterverarbeitung behindert wird. Wenn sich ein Stanzblech nach und nach in den Gegendruckzylinder eindrückt, so kann es geschehen, daß die Stanzlinge aus den Bogen nicht mehr heraus gebrochen werden können. Auch ist der zum endgültigen Heraustrennen erforderliche Nachbearbeitungsschritt mit einem zusätzlichen Zeit- und Kostenaufwand verbunden.This results in the problem that the webs often do not tear clean and visible residues remain on the printed product. Also, individual diecuts can get stuck on the associated bow and in particular fold down, causing further processing is hindered. If a punching plate gradually presses into the impression cylinder, it can happen that the punched pieces can not be broken out of the sheet out. Also, the post-processing step required for the final separation is associated with additional time and expense.

Aus der EP 0 933 174 A1 ist eine Stanzanordnung der im Oberbegriff von Anspruch 1 wiedergegebenen Art bekannt, bei der die Stanzlinge aus den einzelnen Bogen völlig frei gestanzt werden und bei der unmittelbar hinter dem Stanzwerkzeug ein während des Betriebes feststehender, mit Unterdruck arbeitender Ansaugtrichter vorgesehen ist, der dazu dient, die freigekommenen Stanzlinge wegzufördern. Um zu verhindern, dass der vom Absaugtrichter erzeugte Unterdruck zu einem Flattern der aus dem Spalt zwischen dem Stanzzylinder und dem Gegendruckzylinder austretenden Bogenteile führt, sind bei der bekannten Stanzanordnung Andrückwalzen oder -rollen vorgesehen, welche den Bogen so lange gegen eine Gegendruckfläche drücken, bis er den Wirkungsbereich des Absaugtrichters verlassen hat. Nachteilig an dieser Anordnung ist, dass diese Andrückwalzen bzw. -rollen die im Offset-Druck-Verfahren hergestellten Bogen nur in nicht bedruckten Randbereichen berühren können, da es ansonsten zu einem Verwischen zumindest der zuletzt aufgedruckten Farbe kommen würde, die beim Durchlaufen des Stanzwerkes noch nicht völlig durchgetrocknet ist. Eine Alternative wäre hier lediglich, zwischen dem letzten Druckwerk und dem Stanzwerk eine Förderstrecke vorzusehen, die so lang ist, dass für die zuletzt aufgedruckte Farbe ausreichend Zeit zum Durchtrocknen bleibt. Eine solche Anordnung wäre aber mit einem sehr hohen zusätzlichen maschinellen und räumlichen Aufwand verbunden.From EP 0 933 174 A1 a punching arrangement of the type reproduced in the preamble of claim 1 is known, in which the punched pieces are punched completely free from the individual sheets and provided in the directly behind the punch a fixed during operation, working with vacuum intake funnel is, which serves to promote the freed-out diecuts. In order to prevent the negative pressure generated by the suction funnel leads to a flutter of emerging from the gap between the punching cylinder and the impression cylinder arch parts, in the known punching arrangement pressure rollers or rollers are provided which press the sheet against a counter-pressure surface until he has left the scope of the suction funnel. A disadvantage of this arrangement is that these pressure rollers or rollers can touch the sheet produced in the offset printing process only in non-printed edge areas, otherwise it would come to a blurring at least the last printed color, the still when passing through the stamping not completely dried. An alternative would be merely to provide a conveyor between the last printing unit and the stamping, which is so long that sufficient time for drying the last printed ink remains. Such an arrangement would be associated with a very high additional mechanical and spatial complexity.

Somit liegt der Erfindung die Aufgabe zugrunde, eine Stanzanordnung der im Oberbegriff von Anspruch 1 genannten Art zu schaffen, die unmittelbar hinter dem letzten Druckwerk der Offset-Bogendruckmaschine angeordnet werden kann, ohne dass die Gefahr eines Verwischens der zuletzt aufgedruckten Farbe besteht.Thus, the invention has for its object to provide a punching arrangement referred to in the preamble of claim 1 way, which can be arranged immediately behind the last printing unit of the offset sheet printing machine without the risk of blurring the last printed ink.

Zur Lösung dieser Aufgabe sieht die Erfindung die im Anspruch 1 zusammengefaßten Merkmale vor.To solve this problem, the invention provides the features summarized in claim 1.

Zunächst ist das Stanzwerkzeug so ausgebildet, daß keine Verbindungsstege zwischen den Stanzlingen und dem Rest des Bogens verbleiben, d. h. die Stanzlinge völlig freigestanzt werden. Um die Stanzlinge sofort aus dem Stanzwerk zu entfernen, ist eine während des Betriebs feststehende Absaugeinrichtung vorgesehen, die unmittelbar über der Oberfläche des jeweiligen Bogens einen Unterdruck erzeugt, durch den der freiwerdende Stanzling abgesaugt wird.First, the punching tool is formed so that no connecting webs remain between the punched pieces and the rest of the sheet, d. H. the diecuts are completely punched free. In order to remove the punched pieces immediately from the punching unit, a fixed during operation suction device is provided which generates a negative pressure immediately above the surface of the respective sheet, through which the liberated punched product is sucked.

Ohne weitere Maßnahmen würde ein solcher Unterdruck allerdings auch den frisch bedruckten und auf seiner Oberseite noch feuchten Bogen von seiner Unterlage abheben und zum Flattern bringen. Um dies zu vermeiden, ist daher gemäß der Erfindung weiterhin eine während des Betriebs feststehende Gebläseeinrichtung vorgesehen, die mit Hilfe eines Gasstroms den Bogen an seine Anlagefläche trotz des von der Absaugeinrichtung erzeugten Unterdrucks andrückt und stabilisiertWithout further action, however, such a negative pressure would also lift the freshly printed and still wet on his top bow from his pad and make him flutter. To avoid this, therefore, according to the invention, a stationary during operation fan means is provided which presses with the aid of a gas flow, the sheet to its contact surface despite the negative pressure generated by the suction and stabilized

Mit der Bezeichnung "während des Betriebs feststehend" soll zum Ausdruck gebracht werden, daß sich die betreffende Einrichtung während des Betriebs nicht bewegt, insbesondere die zum Weiterbefördern und Stanzen der Druckbogen erforderlichen Bewegungen nicht mitmacht. Zum Einrichten der Stanzanordnung auf ein neues herzustellendes Druckprodukt können jedoch die während des Betriebes festen Positionen sowohl der Ansaug- als auch der Gebläseeinrichtung verändert werden, um sie an die im Regelfall von Produkt zu Produkt unterschiedlichen Positionen der zu erzeugenden Stanzlinge anzupassen.The term "fixed during operation" is intended to express that the device in question does not move during operation, in particular does not participate in the movements necessary for the further transport and punching of the printed sheets. However, to set up the punching assembly to a new printed product to be produced, fixed positions of both the suction and blower means during operation can be varied to accommodate the generally different product to product positions of the diecuts to be produced.

Prinzipiell ist es möglich, die Gebläseeinrichtung ebenfalls als Ansaugeinrichtung auszubilden, die mit Hilfe eines auf der dem Bogen gegenüberliegenden Seite der Anlagefläche erzeugten, durch in der Anlagefläche vorgesehene Löcher hindurch wirkenden Unterdrucks den Bogen gegen die Anlagefläche zieht.In principle, it is also possible to design the blower device as a suction device, which draws the sheet against the contact surface by means of a negative pressure generated on the side of the contact surface opposite the sheet and provided by holes provided in the contact surface.

Vorzugsweise arbeitet die Gebläseeinrichtung jedoch mit Überdruck und umfaßt wenigstens eine während des Betriebs feststehende Düse, die auf der gleichen Seite des Bogens wie die Ansaugeinrichtung angeordnet ist und in unmittelbarer Umgebung des Stanzbereiches einen Gasstrom, vorzugsweise einen Druckluftstrom gegen den Bogen richtet, durch welchen er entgegen der Wirkung des Unterdrucks der Absaugeinrichtung an die Anlagefläche angedrückt und dort stabilisiert wird.Preferably, however, the blower device operates at overpressure and comprises at least one fixed during operation nozzle, which is arranged on the same side of the sheet as the suction and in the immediate vicinity of the punching area a gas stream, preferably a compressed air flow directed against the sheet, by which he counter the effect of the negative pressure of the suction device is pressed against the contact surface and stabilized there.

Diese und weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen niedergelegt.These and other advantageous embodiments of the invention are laid down in the subclaims.

Die Erfindung wird im folgenden anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung beschrieben ; in dieser zeigen:

Fig. 1
eine starke schematisierte Seitenansicht einer erfindungsgemäßen Stanzanordnung,
Fig. 2
in verändertem Maßstab eine Ansicht der Stanzanordnung aus Fig. 1 von links her gesehen, und
Fig. 3a und 3b
jeweils eine perspektivische Ansicht eines Stanzbleches gemäß der Erfindung bzw. nach dem Stand der Technik.
The invention will be described below with reference to an embodiment with reference to the drawing; in this show:
Fig. 1
a strong schematic side view of a punching arrangement according to the invention,
Fig. 2
in a different scale, a view of the punching arrangement of FIG. 1 seen from the left, and
Fig. 3a and 3b
in each case a perspective view of a stamping sheet according to the invention or according to the prior art.

Wie man den Fig. 1 und 2 entnimmt, umfaßt eine erfindungsgemäße Stanzanordnung 1 zwei in Richtung der Pfeile R1, R2 rotierende, jeweils eine stählerne Mantelfläche aufweisende Zylinder 2, 3 von denen der größere Zylinder 2 auf seiner ansonsten völlig glatten Mantelfläche zwei einander diametral gegenüberliegend angeordnete Stanzbleche 4, 4 trägt.As shown in FIGS. 1 and 2, a punching arrangement 1 according to the invention comprises two cylinders 2, 3 rotating in the direction of the arrows R1, R2, each having a steel peripheral surface, of which the larger cylinder 2 is diametrically opposed on its otherwise completely smooth lateral surface arranged punching plates 4, 4 carries.

Durch den zwischen den Zylindern 2, 3 gebildeten Spalt, der in Fig. 1 nicht maßstabsgetreu, sondern der Deutlichkeit halber stark vergrößert dargestellt ist, laufen in einer Offset-Druckmaschine frisch bedruckte Bogen 6 hindurch, die dabei in der bei diesen Maschinen üblichen Weise nur an ihrer Vorderkante von einer entsprechenden Greifeinrichtung (nicht dargestellt) gehalten und geführt werden. Die Bogen 6 liegen dabei mit ihrer trockenen Unterseite an der Mantelfläche des größeren Zylinders 2 und den auf dieser Mantelfläche befindlichen Stanzblechen 4, 4 an. Durch die glatte Mantelfläche des kleineren Zylinders 3 werden die Bogen so gegen die radial vorstehenden Stanzbleche 4, 4 (siehe Fig. 3a) gepreßt, daß der von ihrem scharfen Rand umgebene Bereich des Bogens 6 als Stanzling vollständig aus dem Bogen heraus gestanzt wird. Dabei ist angenommen, daß bei jeder Umdrehung des großen Zylinders 2 zwei bedruckte Bogen 6 durch die Stanzanordnung 1 hindurchlaufen, so daß durch die Stanzbleche 4, 4 an zwei aufeinanderfolgenden Bogen 6 jeweils an der gleichen Stelle ein Stanzling freigestanzt wird.By the gap formed between the cylinders 2, 3, which is not shown to scale in Fig. 1, but greatly magnified for the sake of clarity, run in an offset printing machine freshly printed sheet 6, which in the usual manner in these machines only be held and guided at its front edge by a corresponding gripping device (not shown). The sheet 6 lie with its dry bottom on the outer surface of the larger cylinder 2 and located on this lateral surface punching plates 4, 4 at. Due to the smooth outer surface of the smaller cylinder 3, the sheets are pressed against the radially projecting punching plates 4, 4 (see Fig. 3a) that the area surrounded by its sharp edge portion of the sheet 6 is punched as a punched out of the sheet completely. It is assumed that at each revolution of the large cylinder 2 two printed sheets 6 pass through the punching assembly 1, so that a punched sheet is punched through the punching plates 4, 4 on two successive sheets 6 at the same point.

Die Lage des Bogens 6 relativ zu den Stanzblechen 4, 4 ist in Fig. 1 so dargestellt, daß der Stanzling vollständig innerhalb der Fläche des Bogens 6 liegt, so daß durch den Stanzvorgang ein Fenster entsteht, das auf allen Seiten von Bogenmaterial umgeben ist. Die erfindungsgemäße Stanzanordnung ist hierauf jedoch nicht beschränkt. Die Stanzbleche 4, 4, von denen auch für jeden zu bearbeitenden Bogen 6 mehrere vorgesehen sein können, können auch so angeordnet sein, daß wenigstens eines von ihnen einen Stanzling am Rand des betreffenden Bogens 6 wegstanzt.The position of the sheet 6 relative to the punching plates 4, 4 is shown in Fig. 1 so that the punching is completely within the surface of the sheet 6, so that a window is formed by the punching process, which is surrounded on all sides by sheet material. However, the punching arrangement according to the invention is not limited thereto. The punching plates 4, 4, of which also several can be provided for each sheet to be processed 6, can also be arranged so that at least one of them punched a punched product at the edge of the relevant sheet 6.

Wesentlich ist, daß der Stanzling bereits während seines Freiwerdens in die Ansaugöffnung 9 eines unmittelbar hinter dem Spalt zwischen den Zylindern 2, 3 angeordneten, während des Betriebs feststehenden Absaugtrichters 8 einer Absaugeinrichtung 11 eintritt, von der er nach dem völligen Freistanzen abgesaugt wird. Die Ansaugöffnung 9 befindet sich tatsächlich in weit geringerem Abstand direkt über der Mantelfläche des Zylinders 2, als dies die Fig. 1 zeigt. Der Abstand der an die Krümmung des Zylinders 2 angepaßten Unterseite des Trichters 8 von der Mantelfläche des Zylinders 2 liegt zwischen 0,5 cm und 1,5 cm und beträgt vorzugsweise etwa 1 cm.It is essential that the stamped already during its release into the intake 9 of a directly behind the gap between the cylinders 2, 3 arranged, fixed during operation suction 8 enters a suction device 11, from which it is sucked off after the complete free dancing. The suction opening 9 is actually located at a much smaller distance directly above the lateral surface of the cylinder 2, as shown in FIG. 1. The distance between the underside of the funnel 8 adapted to the curvature of the cylinder 2 and the lateral surface of the cylinder 2 is between 0.5 cm and 1.5 cm and is preferably about 1 cm.

Die am verjüngten Ende 10 des Absaugtrichters 8 befindliche Austrittsöffnung mündet direkt in eine Absaugleitung 12, die an ihrem nicht dargestellten Ende mit einer einen Unterdruck erzeugenden Gebläseeinrichtung sowie einer Sammeleinrichtung zum Aufnehmen der abgesaugten Stanzlinge verbunden ist.The outlet opening located at the tapered end 10 of the suction funnel 8 opens directly into a suction line 12, which is connected at its end, not shown, to a blower device generating a negative pressure and to a collecting device for receiving the extracted punched pieces.

In der Absaugleitung 12 ist ein Schieber 13 vorgesehen, mit dessen Hilfe die Stärke des Unterdrucks reguliert werden kann, durch den die Stanzlinge abgesaugt werden. Vorzugsweise ist dieser Schieber, wie in Fig. 1 gezeigt, so schräg zur Längsachse der Absaugleitung 12 gerichtet, daß seine obere, die Weite des Durchlasses beeinflussende Kante vom Absaugtrichter 8 weiter entfernt ist. Dadurch wird verhindert, daß sich abgesaugte Stanzlinge am Schieber 13 ansammeln und die Absaugleitung 12 verstopfen können.In the suction line 12, a slide 13 is provided, with the aid of which the strength of the negative pressure can be regulated, through which the punched pieces are sucked. Preferably, this slide, as shown in Fig. 1, directed so obliquely to the longitudinal axis of the suction line 12, that its upper, the width of the passage affecting edge of the suction hopper 8 is farther. This prevents sucked punched pieces accumulate on the slide 13 and the suction line 12 can clog.

Vorteilhafter Weise kann vorgesehen sein, daß die Größe der Ansaugöffnung 9 des Ansaugtrichters 8 verstellbar ist, um sie an unterschiedliche Stanzlingsgrößen optimal anpassen zu können..Advantageously, it can be provided that the size of the suction port 9 of the suction hopper 8 is adjustable in order to optimally adapt to different punching unit sizes ..

Um zu verhindern, daß der mit Hilfe der Absaugeinrichtung 11 über dem Bogen 6 erzeugte Unterdruck den nur an seiner in Fig. 1 linken Vorderkante gehaltenen Bogen 6 destabilisiert und insbesondere zum Flattern bringt, umfaßt die Stanzanordnung 1 weiterhin eine während des Betriebs feststehende Gebläseeinrichtung 14, von der in den Fig. 2 nur eine Zuführleitung 16 für Druckluft wiedergegeben ist, die in zwei Verteilerleitungen 17, 17' mündet, von denen sich jede wiederum in zwei Verzweigungsleitungen 18, 19 bzw. 18', 19' für jeden Absaugtrichter 8, 8' aufspaltet, die jeweils über ein Verteilerstück 20 in drei flexible Düsenleitungen 21, 22, 23 und 24, 25, 26 bzw. 21', 22', 23' und 24', 25', 26' mündet. Jede der Düsenleitungen 21 bis 26' trägt an ihrem freien Ende eine Düse 30, die sich in einem geringen Abstand über der Mantelfläche des Zylinders 2 befindet.In order to prevent the negative pressure generated by means of the suction device 11 above the sheet 6 from destabilizing the sheet 6 held only at its left leading edge in FIG. 1 and in particular from fluttering, the punching arrangement 1 further comprises a blower device 14 fixed during operation. 2 of which only one supply line 16 for compressed air is reproduced, which opens into two distribution lines 17, 17 ', each of which in turn in two branch lines 18, 19 and 18', 19 'for each suction funnel 8, the eighth ', which opens in each case via a manifold 20 in three flexible nozzle lines 21, 22, 23 and 24, 25, 26 and 21', 22 ', 23' and 24 ', 25', 26 '. Each of the nozzle lines 21 to 26 'carries at its free end a nozzle 30 which is located at a small distance above the lateral surface of the cylinder 2.

Der Abstand der Düsen 30 von der Mantelfläche des Zylinders 2 liegt vorzugsweise im Bereich von 2 cm bis 4 cm.The distance of the nozzles 30 from the lateral surface of the cylinder 2 is preferably in the range of 2 cm to 4 cm.

Die aus den während des Betriebs feststehenden Düsen 30 austretende Druckluft, die über einen in der Zuführleitung 16 vorgesehenen Druckregler (nicht dargestellt) in ihrer Stärke geregelt werden kann, drückt die unter den Düsen 30 hindurch laufenden Bogen 6 gegen die Mantelfläche des Zylinders 2 an, so daß die Bogen 6 trotz des Unterdrucks, den der jeweilige Trichter 8 bzw. 8' in dem Bereich erzeugt, in welchen sich der frei werdende Stanzling aufgrund der Vorwärtsbewegung des Bogens 6 hinein bewegt, stabil bleibt und problemlos weiterbefördert werden kann. Wesentlich ist dabei, daß der auf seiner Oberseite frisch bedruckte und daher noch feuchte Bogen 6 auf dieser Seite berührungsfrei bleibt und somit ein Verwischen der Farben vermieden wird. Zwischen jedem der Verteilerstücke 20 und der zugehörigen Verzweigungsleitung 18, 19 bzw. 18', 19' ist ein von Hand betätigbares Ventil 31, 32 bzw. 31', 32' vorgesehen, mit dessen Hilfe die Druckluftzufuhr zu den betreffenden Düsen 30 abgestellt werden kann.The compressed air emerging from the nozzles 30 which are stationary during operation and which can be regulated in their strength by means of a pressure regulator (not shown) provided in the supply line 16 presses the sheet 6 passing under the nozzles 30 against the jacket surface of the cylinder 2, so that the sheet 6 despite the negative pressure generated by the respective hopper 8 and 8 'in the area in which the liberated punching moves due to the forward movement of the sheet 6, remains stable and can be easily forwarded. It is essential that the freshly printed on his top and therefore still wet sheet 6 remains non-contact on this page and thus blurring of the colors is avoided. Between each of the manifolds 20 and the associated branch line 18, 19 and 18 ', 19' is a manually operable valve 31, 32 and 31 ', 32' is provided, with the help of the compressed air supply to the nozzle 30 in question can be turned off ,

Als Düsen 30 können im Handel erhältliche Kühldüsen für Bohrständer verwendet werden, deren Öffnung einem Durchmesser von etwa 5 mm besitzt. Es hat sich gezeigt, daß eine Beaufschlagung der Düsen 30 mit einem Überdruck von 4 Bar vorteilhaft ist.As nozzles 30, commercially available cooling nozzles for drill stands can be used whose opening has a diameter of about 5 mm. It has been found that an admission of the nozzles 30 with an overpressure of 4 bar is advantageous.

Wie man den Fig. 1 und 2 entnimmt, sind die Düsen 30 in unmittelbarer Nachbarschaft der Außenflächen der Absaugtrichter 8 bzw. 8' angeordnet, deren Eintrittsöffnungen 9 bzw. 9' nur geringfügig größer sind als der jeweils abzusaugende Stanzling. Dadurch ist gewährleistet, daß die Bogen 6 durch die aus den Düsen 30 austretende Druckluft in unmittelbarer Nachbarschaft des Bereiches an die Mantelfläche des Zylinders 2 angedrückt werden, in welchem der zugehörige Absaugtrichter 8 einen Unterdruck erzeugt, der ansonsten dazu führen könnte, den Bogen 6 von der Mantelfläche des Zylinders 2 abzuheben. Aufgrund der Flexibilität der Düsenleitungen 21 bis 25' können die Düsen 30 innerhalb weiter Bereiche verschwenkt und somit ihre Konfiguration an die Kontur der Ansaugöffnung 9 bzw. 9' bis zugehörigen Absaugtrichters 8 bzw. 8' angepaßt werden.As shown in FIGS. 1 and 2, the nozzles 30 are arranged in the immediate vicinity of the outer surfaces of the suction funnels 8 and 8 'whose inlet openings 9 and 9' are only slightly larger than the respective blank to be sucked off. This ensures that the sheets 6 are pressed by the emerging from the nozzle 30 compressed air in the immediate vicinity of the area to the lateral surface of the cylinder 2, in which the associated suction funnel 8 generates a negative pressure, which otherwise could lead to lift the sheet 6 from the lateral surface of the cylinder 2. Due to the flexibility of the nozzle lines 21 to 25 ', the nozzles 30 can be pivoted within wide ranges and thus their configuration can be adapted to the contour of the suction opening 9 or 9' to the associated suction funnel 8 or 8 '.

Wie man insbesondere der Fig. 2 entnimmt, können auch mehrere Stanzlinge gleichzeitig aus dem Bogen 6 ausgestanzt werden, wobei dann vorzugsweise für jeden Stanzling ein eigener Absaugtrichter 8, 8' mit den zugehörigen Düsenleitungen 21 bis 26 bzw. 21 bis 26' vorgesehen ist.As can be seen in particular from FIG. 2, several diecuts can also be punched out of the sheet 6 at the same time, in which case a separate suction funnel 8, 8 'with the associated nozzle lines 21 to 26 or 21 to 26' is preferably provided for each diecut.

In den Fig. 3a und 3b ist jeweils ein Ausschnitt 35 bzw. 35' der Mantelfläche eines Zylinders 2 wiedergegeben, wobei der Deutlichkeit halber der eigentlich gekrümmte Mantelflächenausschnitt 35 bzw. 35' eben dargestellt ist. Jede der beiden Mantelflächenausschnitte 35 bzw. 35' trägt ein Stanzblech 4 bzw. 4', wobei ersteres gemäß der Erfindung ausgebildet ist, während letzteres dem Stand der Technik entspricht. Die beiden 4, 4' stehen jeweils etwa 0,8 mm über die Mantelfläche des betreffenden Zylinders 2 in radialer Richtung vor.In FIGS. 3a and 3b, a cutout 35 or 35 'of the lateral surface of a cylinder 2 is reproduced, with the actually curved lateral surface cutout 35 or 35' being shown for the sake of clarity. Each of the two lateral surface cutouts 35 and 35 'carries a stamped sheet 4 or 4', wherein the former is formed according to the invention, while the latter corresponds to the prior art. The two 4, 4 'are each about 0.8 mm above the lateral surface of the respective cylinder 2 in the radial direction.

Wie eingangs erwähnt, wurde das Stanzen von in einer Offset-Bogendruckmaschine bedruckten Bogen 6 nach dem Stand der Technik so durchgeführt, daß die im Stanzwerk verwendeten Stanzbleche 4' Aussparungen 36 aufwiesen, von denen in Fig. 3b in jeder Seitenkante eine wiedergegeben ist. Durch diese Aussparungen 36 wurde der Stanzling nicht vollständig aus den betreffenden Bogen freigestanzt, sondern es blieb an jeder Aussparung 36 ein Verbindungssteg zwischen dem Stanzling und dem Rest des Bogens stehen, der dann später von Hand durchgetrennt werden mußte.As mentioned above, the stamping of printed in an offset sheet-fed press sheet 6 according to the prior art was carried out so that the punching plate used in the punching 4 'recesses 36, of which in Fig. 3b in each side edge is reproduced. Through these recesses 36, the blank was not completely punched out of the relevant sheet, but it remained at each recess 36, a connecting web between the punching and the rest of the sheet are, which then later had to be severed by hand.

Demgegenüber sind, wie in Fig. 3a gezeigt, bei der erfindungsgemäßen Stanzanordnung die Stanzbleche 4 durchgehend ausgebildet, so daß der Stanzling völlig freigestanzt wird.In contrast, as shown in Fig. 3a, in the punching arrangement according to the invention, the punching plates 4 are formed continuously, so that the diecut is completely punched free.

Claims (11)

  1. A stamping arrangement (1) which for stamping sheets (6) printed in an offset sheet printing machine with at least one printing mechanism includes the following:
    - at least one stamping tool (4) which is so designed that it stamps completely free the stamping in question,
    - a suction removal device (11) operating with a reduced pressure and including at least one suction removal hood (8) which is stationary during operation and whose wide suction intake opening (9) which receives the stampings to convey them away is arranged in the direct proximity of the path of movement of the one surface of the printed sheet (6) directly downstream of the working region of the stamping tool (4) and whose narrow outlet opening opens into a suction removal conduit (12) serving to convey away the sucked-away stampings,
    characterised in that
    - there is provided a blower device (14) including at least one nozzle (30) which is stationary during operation and which directs a jet of gas against the surface of the printed sheet (6), over which is disposed the suction intake opening (9) of the suction removal hood (8) in order to stabilise the printed sheet (6) during the operation of sucking away the stampings by means of a flow of gas at a contact surface.
  2. A stamping arrangement according to claim 1 characterised in that it is in the form of an automatically operating unit and is arranged downstream of the at least one printing mechanism in order to stamp at least one stamping out of or from the printed sheets (6) in synchronous relationship with the printing mechanism.
  3. A stamping arrangement according to claim 1 or claim 2 characterised in that the size of the cross-section of the suction intake opening (9) of the at least one suction removal hood (8) is somewhat larger than the stamping to be sucked away thereby.
  4. A stamping arrangement according to one of the preceding claims characterised in that the size of the suction intake opening of the suction removal hood (8) is adjustable.
  5. A stamping arrangement according to one of the preceding claims characterised in that the blower device (14) includes a plurality of nozzles (30) which are stationary during operation and which each direct a respective jet of gas against the surface of the printed sheet (6), over which is disposed the suction intake opening (9) of the suction removal hood (8), the nozzles being arranged substantially uniformly around the periphery of the suction intake opening (9) of the at least one suction removal hood (8).
  6. A stamping arrangement according to one of the preceding claims characterised in that the gas flowing in the blower device (14) is air.
  7. A stamping arrangement according to one of the preceding claims characterised in that there are provided two cylinders (2, 3), between which the printed sheets (6) pass and of which the one cylinder (2) on its otherwise smooth peripheral surface carries a number of stamping plates (4, 4'), which corresponds to the number of the stampings to be produced, while the other cylinder (3) which has a completely smooth peripheral surface serves as a counter-pressure cylinder for pressing the sheets (6) against the stamping plates (4, 4').
  8. A stamping arrangement according to one of the preceding claims characterised in that provided for each stamping to be produced is its own suction removal hood (8, 8').
  9. A stamping arrangement according to claim 8 characterised in that the blower device (14) includes at least one nozzle whose jet of gas stabilises the printed sheet in the peripheral region of the suction intake openings of at least two suction removal hoods (8, 8') at the contact surface.
  10. A stamping arrangement according to one of the preceding claims characterised in that the contact surface also moves with the printed sheet (6) respectively stabilised by the blower device (14) thereat.
  11. A stamping arrangement according to one of the preceding claims characterised in that it is arranged downstream of the last printing mechanism in an offset sheet printing machine comprising a plurality of printing mechanisms.
EP02005516A 2001-03-12 2002-03-11 Press-cutting device with suction and blowing means Expired - Lifetime EP1240986B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20104247U DE20104247U1 (en) 2001-03-12 2001-03-12 Punching arrangement
DE20104247U 2001-03-12

Publications (4)

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EP1240986A2 EP1240986A2 (en) 2002-09-18
EP1240986A3 EP1240986A3 (en) 2004-05-19
EP1240986B1 true EP1240986B1 (en) 2006-10-04
EP1240986B2 EP1240986B2 (en) 2010-01-27

Family

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EP02005516A Expired - Lifetime EP1240986B2 (en) 2001-03-12 2002-03-11 Press-cutting device with suction and blowing means

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EP (1) EP1240986B2 (en)
AT (1) ATE341428T1 (en)
CZ (1) CZ297940B6 (en)
DE (2) DE20104247U1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20104247U1 (en) † 2001-03-12 2001-09-06 Offsetdruck Nuernberg Gmbh & C Punching arrangement
DE10338352A1 (en) 2003-08-21 2005-03-17 Cgh Consultants Method for inline punching in sheetfed offset printing and sheetfed offset printing press
DE102006038937A1 (en) * 2006-08-18 2008-02-21 Koenig & Bauer Aktiengesellschaft Sheet-fed offset printing machine, has printing or lacquer unit with punching device, which changes suction direction based on sheet surface such that suction takes place only at plain lower surface

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD95851A1 (en) * 1972-01-17 1973-02-20
DE2235511C3 (en) * 1972-07-14 1975-02-13 Automatic Druckmaschinenfabrik Dr. W. Hinniger U. Soehne, 1000 Berlin Device for punching rows of holes in endless paper webs on a rotary printing machine
US3998116A (en) * 1975-03-03 1976-12-21 F. L. Smithe Machine Company, Inc. Apparatus for removing cut panels from sheet material
US5140880A (en) * 1991-05-08 1992-08-25 Littleton Industrial Consultants, Inc. Push-pull apparatus and method for web cutting and trim strip removal
DE4138277C2 (en) * 1991-11-21 1998-10-29 Kba Planeta Ag Process and device for lubrication-free punching, creasing and perforating
DE4308710A1 (en) * 1992-03-18 1993-10-28 Schule Gmbh F H Removal of waste punchings of corrugated cardboard - using drum bearing cardboard rotating against drum with punches and compressed air supply to individual punches
DE4229699C2 (en) * 1992-09-05 1995-09-21 Heidelberger Druckmasch Ag Device for the controlled removal of pieces of waste from printing materials
US5660380A (en) * 1995-08-15 1997-08-26 W. L. Gore & Associates, Inc. Vacuum fixture and method for dimensioning and manipulating materials
FR2774018B1 (en) * 1998-01-28 2000-04-07 Offset Feuilles Nord METHOD FOR CUTTING SHEET SHEET WITH EXTRACTION OF CUT TRIMS, DEVICE FOR EXTRACTING SHEET TRIMS, AND PRINTING AND CUTTING LINE FOR SHEET SHEETS
DE29818343U1 (en) * 1998-10-14 2000-02-24 Heidelberger Druckmasch Ag Sheet printing machine
DE20104247U1 (en) † 2001-03-12 2001-09-06 Offsetdruck Nuernberg Gmbh & C Punching arrangement

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Publication number Publication date
ATE341428T1 (en) 2006-10-15
EP1240986A3 (en) 2004-05-19
CZ2002886A3 (en) 2002-10-16
EP1240986A2 (en) 2002-09-18
EP1240986B2 (en) 2010-01-27
CZ297940B6 (en) 2007-05-02
DE50208301D1 (en) 2006-11-16
DE20104247U1 (en) 2001-09-06

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