EP1882564B1 - Sheet cutting and creasing press with adjustable cutting and creasing pressure - Google Patents

Sheet cutting and creasing press with adjustable cutting and creasing pressure Download PDF

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Publication number
EP1882564B1
EP1882564B1 EP07111100A EP07111100A EP1882564B1 EP 1882564 B1 EP1882564 B1 EP 1882564B1 EP 07111100 A EP07111100 A EP 07111100A EP 07111100 A EP07111100 A EP 07111100A EP 1882564 B1 EP1882564 B1 EP 1882564B1
Authority
EP
European Patent Office
Prior art keywords
punching
cutting
embossing
sheet
die
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.)
Active
Application number
EP07111100A
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German (de)
French (fr)
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EP1882564A2 (en
EP1882564A3 (en
Inventor
David Ehrbar
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE102007014317A external-priority patent/DE102007014317A1/en
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1882564A2 publication Critical patent/EP1882564A2/en
Publication of EP1882564A3 publication Critical patent/EP1882564A3/en
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Classifications

    • 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
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices 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
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/086—Electric, magnetic, piezoelectric, electro-magnetic means
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/12—Fluid-pressure means
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/42—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between work feed and clamp
    • 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
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0625—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by endless conveyors, e.g. belts
    • B26D7/0633—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by endless conveyors, e.g. belts by grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1818—Means for removing cut-out material or waste by pushing out
    • 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 sheet punching and embossing machine with adjustable punching or embossing pressure according to the preamble of claim 1, as shown in DE 30 44 803 A1 (look there Fig. 2 ) known.
  • a punching station has two crucibles, also referred to as upper table and lower table.
  • One of the two tables is moved, the other fixed.
  • One table carries the punching tool with the punching knives, the other table the counter plate.
  • the moving table is movable back and forth perpendicular to the counterplate plane via a drive device. In the drive devices to distinguish between toggle drive and eccentric drive. If the upper table is the moving crucible, this is connected via a yoke to the machine frame.
  • the DE 30 44 083 C3 describes inter alia a punching machine with a driven by an eccentric gear top table. The eccentric gear is arranged between yoke and upper table.
  • Such a punching machine is considered to be the closest prior art of the present application.
  • the punching pressure in the sheet punching and embossing machine must be adjustable according to the sheet being processed.
  • Shims are located under the press beam, on which the toggle lever drive of a moving undertable is mounted.
  • the shims can be moved by electric / pneumatic or hydraulic motors, thereby changing the vertical position of the press beams, so that the toggle lever drive and thus the moving crucible. This changes the distance between the moving lower table and the fixed upper table and thus the punching force.
  • the DE OS 24 48 814 shows a device for parallelism adjustment of the movable crucible of a crucible press and for punch pressure regulation of a crucible press.
  • the Moving crucible is driven here by a push rod crankshaft device.
  • the device is mounted on a bearing with trapezoidal shaped wedges. The oblique side of one wedge slides on the sloping side of the other wedge, so that in this Movement, the overall height is reduced or increased depending on the direction of adjustment of the wedges.
  • the device is mounted on four bearings with wedges. To regulate the punching pressure all wedges must be moved simultaneously. Here, the distance between the two crucibles, and thus the punching force, changed.
  • 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.
  • the uneven punching pressure in turn causes an unclean cutting of the cutting blade of the punching tool. In the prior art, this problem is solved by the punching blades are individually highlighted.
  • Object of the present invention is therefore to reduce the setup time and thus to increase the productivity of the sheet punching and embossing machine.
  • the sheet punching and embossing machine has this at least one punching station with adjustable punching or embossing pressure with a first primarily lower crucible arranged in a machine frame and a second mainly deliverable against the first crucible crucible, which is connected via a yoke with the machine frame, wherein in the vertical beams of the yoke each one device for regulating the punching or embossing pressure is located.
  • Each device has at least one actuator element, which can be controlled individually and whereby the punching or embossing pressure during operation of the sheet punching and embossing machine can be regulated.
  • actuator elements electric motors, which are connected via a transmission with a device for changing or adjusting the crucible, or piezo elements or hydraulic chambers used.
  • the device for regulating the stamping or embossing pressure can also be advantageously used for stroke cutoff.
  • a Hubabscnies is necessary to prevent application of the film on the embossing mold and their bonding.
  • the sheet punching and embossing machine has separate drives of the sheet transport system and the individual processing stations.
  • the drive of the sheet transport system can be designed in particular as a linear drive.
  • FIG. 1 the basic structure of a sheet punching and embossing machine 100 for punching, breaking and depositing sheets of paper, cardboard and the like is shown.
  • the punching and embossing machine 100 has a feeder 1, a punching station 2, a breaking station 3 and a boom 4, which are supported and enclosed by a common machine housing 5.
  • the sheets 6 are separated by a feeder 1 from a stack and fed via a feed table 16 of the sheet punching and embossing machine 100 and gripped by a transport system 7 grippers of a gripper carriage 8 at its front edge and intermittently in sheet conveying direction F through the various stations , 3 and 4 of the punching and embossing machine 100 pulled.
  • the punching station 2 consists of a lower table 9 and an upper table 10, which are spaced apart by the distance a.
  • the lower table 9 is fixedly mounted in the machine frame and provided with a counter plate to the punching knife.
  • the upper table 10 is supported vertically movable back and forth.
  • the lower table 9 is in connection with a Device for regulating the punching or embossing pressure 20. This is located between the lower table 9 and the fixed machine frame 5.
  • 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.
  • the breaking station 3 the unwanted pieces of waste are pushed out of the sheet 6 downwards with the aid of the stripping tools, whereby the waste pieces 11 fall into a container-like carriage 12 inserted below the station.
  • the boom 4 may also include a pallet 13 on which the individual sheets are stacked in the form of a stack 14, so that after reaching a certain stack height, the pallets can be moved away with the stacked sheets 14 from the field of punching and embossing machine 100.
  • Fig. 2a shows a detailed view of the punching station 2 of the sheet punching and embossing machine 100.
  • Upper table 10 and lower table 9 are spaced apart by the distance a.
  • the upper table 10 is the deliverable crucible, which performs a punching stroke S.
  • the lower table 9 is fixedly connected to the machine housing 5 of the sheet punching and embossing machine 100.
  • the device for regulating the punching or embossing pressure 20 is the device for regulating the punching or embossing pressure 20.
  • This has a plurality of actuator elements 21.
  • these actuator elements 21 are distributed over the base area of the device for regulating the punching or embossing pressure 20. As shown, the actuator elements 21 can be distributed uniformly in a matrix-like manner over the surface of the device for regulating the punching or embossing pressure 20 or also unevenly (not shown).
  • the actuator elements 21 of the device for regulating the punching or embossing pressure 20 can be controlled individually. The control is done via a controller 15th Also, the punching stroke S, ie the delivery of upper table 10 to the lower table 9, is controlled by the controller 15.
  • the punching blades are connected to the upper table 10 by means of a tool frame. With the lower table 9 a counter-punching plate is connected.
  • the punching tool can be designed in a manner known to those skilled in the art. Also gripper carriage 8 and 6 sheets are not shown for clarity. Their position, however, arises Fig. 1 ,
  • the actuator elements 21 of the device for regulating the punching or embossing pressure 20 are actuated individually by the controller 15, they act with a pressure force on the undertable 9 and the overlying counter-punching plate.
  • the undertable 9 and the counter-punching plate thereby undergo minimal deformation. Due to this deformation, the distance a of the upper table from the lower table can be adjusted zonally, i. H. the distance from punching knife to the counter-punching plate and thus the punching pressure acting on a sheet 6 by a punching knife.
  • the actuator elements 21 of the device for regulating the punching or embossing pressure 20 can be embodied in various design variants. These are in the Figures 3a, 3b and 3c shown.
  • Fig. 3a shows a piezoelectric element 30, to which a voltage is applied, which causes a deformation of the piezoelectric crystals. The control of the piezoelectric element is done by the control of the voltage source.
  • the piezoelectric element 30 is designed so that the crystals expand mainly in the expansion direction b. The expansion of the piezocrystals in the direction perpendicular to the expansion direction b, however, is prevented by the composition and structural design of the piezoelectric element 30.
  • Fig. 3b shows a hydraulic chamber 31. This is connected via hose lines with a hydraulic unit 33. Between hydraulic unit 33 and hydraulic chamber 31 is a valve 32. This is controlled by the controller 15.
  • the hydraulic chamber 31 is structurally constructed so that an increase in the pressure in the Hydraulic chamber 31 causes an expansion of the actuator 21 in Ausdehnraum b.
  • FIG. 3c an electromechanical adjusting device 36 is shown.
  • This has a first wedge 36.1 and a second wedge 36.2. These slide on each other on their slanted surfaces.
  • the first and lower wedge 36.1 can be moved via a gear 35 by an electric motor 34 in the adjustment direction c.
  • the second and upper wedge 36.2 slides on the lower wedge 36.1 and is thus displaced in the adjustment direction d.
  • the control of the actuator 21 with electromechanical adjustment 36 is done by the control of the electric motor 34th

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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)
  • Treatment Of Fiber Materials (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Description

Die Erfindung betrifft eine Bogenstanz- und -prägemaschine mit regulierbarem Stanz- oder Prägedruck gemäß dem Oberbegriff von Anspruch 1, wie aus der DE 30 44 803 A1 (siehe dort Fig. 2) bekannt.The invention relates to a sheet punching and embossing machine with adjustable punching or embossing pressure according to the preamble of claim 1, as shown in DE 30 44 803 A1 (look there Fig. 2 ) known.

Stand der TechnikState of the art

Aus dem Stand der Technik sind Bogenstanz- und -prägemaschinen hinlänglich bekannt.From the state of the art sheet punching and embossing machines are well known.

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 (vg. Druckweiterverarbeitung, Ausbildungsleitfaden für Buchbinder, Bundesverband Druck e. V. 1996, S. 351 ff. ). Verpackungsmaterialien aus Papier, Karton, Pappe oder Wellpappe werden hauptsächlich im Bogenformat gestanzt. 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 Untertisch und einem Obertisch mit Stanzwerkzeug positioniert und dort gestanzt. Einer der Tische ist bewegt, der andere fest.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 stamps, in some cases it is also shearing operations (see also print finishing, training guideline for Buchbinder, Bundesverband Druck e. V. 1996, p. 351 ff. ). Packaging materials made of paper, cardboard, cardboard or corrugated board are mainly punched in sheet format. 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 in an alignment device, taken over by a gripper carriage and positioned exactly in the punching device between a lower table and an upper table with a punching tool and punched there. One of the tables is moved, the other stuck.

In der DE 30 44 083 C3 sind verschiedenartige Ausführungsformen von Stanzstationen einer Stanzmaschine beschrieben. Eine Stanzstation besitzt zwei Tiegel, auch als Obertisch und Untertisch bezeichnet. Einer der beiden Tische ist bewegt, der andere fest. Der eine Tisch trägt das Stanzwerkzeug mit den Stanzmessern, der andere Tisch die Gegenplatte. Der bewegte Tisch ist über eine Antriebsvorrichtung senkrecht zur Gegenplattenebene hin und her beweglich. Bei den Antriebsvorrichtungen ist zwischen Kniehebelantrieb und Exzenterantrieb zu unterscheiden. Sofern der Obertisch der bewegte Tiegel ist, ist dieser über ein Joch mit dem Maschinengestell verbunden. Die DE 30 44 083 C3 beschreibt unter anderem eine Stanzmaschine mit einem durch ein Exzentergetriebe angetriebenen Obertisch. Das Exzentergetriebe ist dabei zwischen Joch und Obertisch angeordnet. Eine derartige Stanzmaschine wird als nächstliegender Stand der Technik der vorliegenden Anmeldung erachtet. Um Produkte von hoher Qualität zu erhalten, muss der Stanzdruck in der Bogenstanz- und -prägemaschine je nach zu bearbeitenden Bogen angepasst werden können.In the DE 30 44 083 C3 Various embodiments of punching stations of a punching machine are described. A punching station has two crucibles, also referred to as upper table and lower table. One of the two tables is moved, the other fixed. One table carries the punching tool with the punching knives, the other table the counter plate. The moving table is movable back and forth perpendicular to the counterplate plane via a drive device. In the drive devices to distinguish between toggle drive and eccentric drive. If the upper table is the moving crucible, this is connected via a yoke to the machine frame. The DE 30 44 083 C3 describes inter alia a punching machine with a driven by an eccentric gear top table. The eccentric gear is arranged between yoke and upper table. Such a punching machine is considered to be the closest prior art of the present application. 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.

In der DE 691 05 804 T2 ist ein ähnliches Verfahren zur Regulierung des Arbeitsdrucks einer Stanzpresse beschrieben. Unterlegstücke befinden sich unter Pressbalken, auf welchen der Kniehebelantrieb eines bewegten Untertisches gelagert ist. Die Unterlegstücke können durch Elektro-/Pneumatik- oder Hydraulikmotoren verschoben werden, verändern dadurch die vertikale Lage der Pressbalken, damit des Kniehebelantriebs und damit des bewegten Tiegels. Dadurch verändert sich der Abstand zwischen bewegtem Untertisch und festem Obertisch und damit die Stanzkraft.In the DE 691 05 804 T2 a similar method for regulating the working pressure of a punching press is described. Shims are located under the press beam, on which the toggle lever drive of a moving undertable is mounted. The shims can be moved by electric / pneumatic or hydraulic motors, thereby changing the vertical position of the press beams, so that the toggle lever drive and thus the moving crucible. This changes the distance between the moving lower table and the fixed upper table and thus the punching force.

Die DE OS 24 48 814 zeigt eine Vorrichtung zur Parallelitätsjustierung des beweglichen Tiegels einer Tiegelpresse sowie zur Stanzdruckregulierung einer Tiegelpresse. Der bewegte Tiegel ist hier durch eine Schubstangenkurbelwellenvorrichtung angetrieben. Die Vorrichtung ist auf einem Lager mit trapezförmig ausgebildeten Keilen gelagert. Die Schrägseite des einen Keils gleitet auf der Schrägseite des anderen Keils, so dass bei dieser Bewegung die Gesamthöhe vermindert bzw. vergrößert wird je nach der Richtung der Verstellung der Keile. Die Vorrichtung ist auf vier Lagern mit Keilen gelagert. Zur Regulierung des Stanzdrucks müssen alle Keile gleichzeitig verschoben werden. Hierbei wird der Abstand der beiden Tiegel, und damit die Stanzkraft, verändert.The DE OS 24 48 814 shows a device for parallelism adjustment of the movable crucible of a crucible press and for punch pressure regulation of a crucible press. Of the Moving crucible is driven here by a push rod crankshaft device. The device is mounted on a bearing with trapezoidal shaped wedges. The oblique side of one wedge slides on the sloping side of the other wedge, so that in this Movement, the overall height is reduced or increased depending on the direction of adjustment of the wedges. The device is mounted on four bearings with wedges. To regulate the punching pressure all wedges must be moved simultaneously. Here, the distance between the two crucibles, and thus the punching force, 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 Stanz- und 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. Der ungleiche Stanzdruck wiederum bewirkt ein unsauberes Schneiden der Schneidmesser des Stanzwerkzeugs. 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.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. The uneven punching pressure in turn causes an unclean cutting of the cutting blade of the punching tool. 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.

Aufgabe der vorliegenden Erfindung ist es deshalb, die Rüstzeit zu verringern und damit die Produktivität der Bogenstanz- und -prägemaschine zu erhöhen.Object of the present invention is therefore to reduce the setup time and thus to increase the productivity of the sheet punching and embossing machine.

Gelöst wird diese Aufgabe durch eine Bogenstanz- und -prägemaschine mit regulierbarem Stanz- oder Prägedruck mit den Merkmalen von Anspruch1.This object is achieved by a sheet punching and embossing machine with adjustable punching or embossing with the features of claim 1.

In einer vorteilhaften Ausführungsform der Bogenstanz- und -prägemaschine besitzt diese mindestens eine Stanzstation mit regulierbarem Stanz- oder Prägedruck mit einem ersten vornehmlich unteren fest in einem Maschinengestell angeordneten Tiegel und einem zweiten vornehmlich oberen gegen den ersten Tiegel zustellbaren Tiegel, welcher über ein Joch mit dem Maschinengestell verbunden ist, wobei sich in den senkrechten Trägern des Jochs je eine Vorrichtung zur Regulierung des Stanz- oder Prägedrucks befindet. Jede Vorrichtung besitzt mindestens ein Aktuatorelement, welches einzeln angesteuert werden kann und wodurch der Stanz- oder Prägedruck während des Betriebs der Bogenstanz- und -prägemaschine reguliert werden kann.In an advantageous embodiment of the sheet punching and embossing machine has this at least one punching station with adjustable punching or embossing pressure with a first primarily lower crucible arranged in a machine frame and a second mainly deliverable against the first crucible crucible, which is connected via a yoke with the machine frame, wherein in the vertical beams of the yoke each one device for regulating the punching or embossing pressure is located. Each device has at least one actuator element, which can be controlled individually and whereby the punching or embossing pressure during operation of the sheet punching and embossing machine can be regulated.

Bei allen drei Ausführungsformen und ihren Weiterbildungen können als Aktuatorelemente Elektromotoren, welche über ein Getriebe mit einer Vorrichtung zur Veränderung oder Verstellung des Tiegels in Verbindung stehen, oder Piezo-Elemente oder Hydraulikkammern zum Einsatz kommen.In all three embodiments and their developments can be used as actuator elements electric motors, which are connected via a transmission with a device for changing or adjusting the crucible, or piezo elements or hydraulic chambers used.

Besitzt die Bogenstanz- und -prägemaschine eine Heißfolienprägestation, so kann die Vorrichtung zur Regulierung des Stanz- oder Prägedrucks in vorteilhafter Weise auch zur Hubabschaltung genutzt werden. Insbesondere im Einrichtbetrieb, wenn sich kein Bogen unter dem Heißfolienmodul befindet, ist eine Hubabschaltung notwendig, um ein Aufbringen der Folie auf die Prägeform und deren Verkleben zu vermeiden.If the sheet punching and embossing machine has a hot foil stamping station, then the device for regulating the stamping or embossing pressure can also be advantageously used for stroke cutoff. In particular, in setup mode, when no sheet is under the hot foil module, a Hubabschaltung is necessary to prevent application of the film on the embossing mold and their bonding.

Weiter ist es vorteilhaft, wenn die Bogenstanz- und -prägemaschine über getrennte Antriebe des Bogentransportsystems und der einzelnen Bearbeitungsstationen verfügt. Der Antrieb des Bogentransportsystems kann dabei insbesondere als Linearantrieb ausgebildet sein.Further, it is advantageous if the sheet punching and embossing machine has separate drives of the sheet transport system and the individual processing stations. The drive of the sheet transport system can be designed in particular as a linear drive.

Hinsichtlich weiterer vorteilhafter Ausgestaltungen der Erfindung wird auf die Unteransprüche sowie die Beschreibung eines Ausführungsbeispiels unter Bezugnahme auf die beiliegenden Zeichnungen verwiesen.With regard to further advantageous embodiments of the invention, reference is made to the dependent claims and the description of an embodiment with reference to the accompanying drawings.

Ausführungsbeispielembodiment

Die Erfindung soll an Hand eines Ausführungsbeispiels noch näher erläutert werden. Es zeigen in schematischer Darstellung

Fig. 1
eine Bogenstanz- und Prägemaschine mit Vorrichtung zur Regulierung des Stanz- oder Prägedrucks
Fig. 2a
eine Detailansicht der Stanzstation
Fig. 2b
eine Schnittdarstellung der Fig. 2a entlang IIb-IIb
Fig. 3a
ein Aktuatorelement ausgeführt als Piezoelement
Fig. 3b
ein Aktuatorelement ausgeführt als Hydraulikkammer
Fig. 3c
ein Aktuatorelement ausgeführt als elektro-mechanische Verstellvorrichtung
The invention will be explained in more detail with reference to an embodiment. It show in a schematic representation
Fig. 1
a sheet punching and embossing machine with device for regulating the punching or embossing pressure
Fig. 2a
a detailed view of the punching station
Fig. 2b
a sectional view of Fig. 2a along IIb-IIb
Fig. 3a
an actuator element designed as a piezoelectric element
Fig. 3b
an actuator element designed as a hydraulic chamber
Fig. 3c
an actuator element designed as an electro-mechanical adjusting device

In Figur 1 ist der prinzipielle Aufbau einer Bogenstanz- und -prägemaschine 100 zum Stanzen, Ausbrechen und Ablegen von Bögen aus Papier, Pappe und dergleichen dargestellt. Die Stanz- und Prägemaschine 100 besitzt einen Anleger 1, eine Stanzstation 2, eine Ausbrechstation 3 und einen Ausleger 4, die von einem gemeinsamen Maschinengehäuse 5 getragen und umschlossen werden.In FIG. 1 the basic structure of a sheet punching and embossing machine 100 for punching, breaking and depositing sheets of paper, cardboard and the like is shown. The punching and embossing machine 100 has a feeder 1, a punching station 2, a breaking station 3 and a boom 4, which are supported and enclosed by a common machine housing 5.

Die Bogen 6 werden durch einen Anleger 1 von einem Stapel vereinzelt und über einen Zuführtisch 16 der Bogenstanz- und -prägemaschine 100 zugeführt und von an einem Transportsystem 7 befestigten Greifern eines Greiferwagens 8 an ihrer Vorderkante ergriffen und intermittierend in Bogenförderrichtung F durch die verschiedenen Stationen 2, 3 und 4 der Stanz- und Prägemaschine 100 hindurchgezogen.The sheets 6 are separated by a feeder 1 from a stack and fed via a feed table 16 of the sheet punching and embossing machine 100 and gripped by a transport system 7 grippers of a gripper carriage 8 at its front edge and intermittently in sheet conveying direction F through the various stations , 3 and 4 of the punching and embossing machine 100 pulled.

Die Stanzstation 2 besteht aus einem Untertisch 9 und einem Obertisch 10, welche mit dem Abstand a voneinander beabstandet sind. Der Untertisch 9 ist fest im Maschinengestell gelagert und mit einer Gegenplatte zum Stanzmesser versehen. Der Obertisch 10 ist vertikal hin- und her bewegbar gelagert. Der Untertisch 9 steht in Verbindung mit einer Vorrichtung zur Regulierung des Stanz- oder Prägedrucks 20. Diese befindet sich zwischen Untertisch 9 und festem Maschinenrahmen 5.The punching station 2 consists of a lower table 9 and an upper table 10, which are spaced apart by the distance a. The lower table 9 is fixedly mounted in the machine frame and provided with a counter plate to the punching knife. The upper table 10 is supported vertically movable back and forth. The lower table 9 is in connection with a Device for regulating the punching or embossing pressure 20. This is located between the lower table 9 and the fixed machine frame 5.

Der Greiferwagen 8 transportiert den Bogen 6 von der Stanz- und Prägestation 2 in die nachfolgende Ausbrechstation 3, die mit Ausbrechwerkzeugen ausgestattet ist. In der Ausbrechstation 3 werden mit Hilfe der Ausbrechwerkzeuge die nicht benötigten Abfallstücke aus dem Bogen 6 nach unten herausgestoßen, wodurch die Abfallstücke 11 in einen unter der Station eingeschobenen behälterartigen Wagen 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. In the breaking station 3, the unwanted pieces of waste are pushed out of the sheet 6 downwards with the aid of the stripping tools, whereby the waste pieces 11 fall into a container-like carriage 12 inserted below the station.

Von der Ausbrechstation 3 gelangt der Bogen in den Ausleger 4, wo der Bogen entweder nur einfach abgelegt wird, oder aber gleichzeitig eine Trennung der einzelnen Nutzen erfolgt. Der Ausleger 4 kann auch eine Palette 13 enthalten, auf der die einzelnen Bögen in Form eines Stapels 14 aufgestapelt werden, so dass nach Erreichen einer bestimmten Stapelhöhe die Paletten mit den aufgestapelten Bögen 14 aus dem Bereich der Stanz- und Prägemaschine 100 weggefahren werden können.From the stripping station 3, the sheet enters the boom 4, where the sheet is either simply stored, or at the same time there is a separation of the individual benefits. The boom 4 may also include a pallet 13 on which the individual sheets are stacked in the form of a stack 14, so that after reaching a certain stack height, the pallets can be moved away with the stacked sheets 14 from the field of punching and embossing machine 100.

Fig. 2a zeigt eine Detailansicht der Stanzstation 2 der Bogenstanz- und -prägemaschine 100. Obertisch 10 und Untertisch 9 sind mit dem Abstand a voneinander beabstandet. Bei dem Untertisch 9 handelt es sich um den festen Tiegel, beim Obertisch 10 handelt es sich um den zustellbaren Tiegel, welcher einen Stanzhub S ausführt. Der Untertisch 9 ist mit dem Maschinengehäuse 5 der Bogenstanz- und -prägemaschine 100 fest verbunden. Zwischen dem Untertisch 9 und dem Maschinengehäuse 5 befindet sich die Vorrichtung zur Regulierung des Stanz- oder Prägedrucks 20. Diese besitzt mehrere Aktuatorelemente 21. Aus Fig. 2b wird deutlich, dass diese Aktuatorelemente 21 über die Grundfläche der Vorrichtung zur Regulierung des Stanz- oder Prägedrucks 20 verteilt sind. Die Aktuatorelemente 21 können dabei, wie dargestellt, matrixförmig gleichmäßig über die Fläche der Vorrichtung zur Regulierung des Stanz- oder Prägedrucks 20 verteilt sein oder auch ungleichmäßig (nicht dargestellt). Fig. 2a shows a detailed view of the punching station 2 of the sheet punching and embossing machine 100. Upper table 10 and lower table 9 are spaced apart by the distance a. In the lower table 9 is the fixed crucible, the upper table 10 is the deliverable crucible, which performs a punching stroke S. The lower table 9 is fixedly connected to the machine housing 5 of the sheet punching and embossing machine 100. Between the lower table 9 and the machine housing 5 is the device for regulating the punching or embossing pressure 20. This has a plurality of actuator elements 21. Off Fig. 2b It is clear that these actuator elements 21 are distributed over the base area of the device for regulating the punching or embossing pressure 20. As shown, the actuator elements 21 can be distributed uniformly in a matrix-like manner over the surface of the device for regulating the punching or embossing pressure 20 or also unevenly (not shown).

Die Aktuatorelemente 21 der Vorrichtung zur Regulierung des Stanz- oder Prägedrucks 20 können einzeln angesteuert werden. Die Ansteuerung geschieht über eine Steuerung 15. Auch der Stanzhub S, d. h. die Zustellung von Obertisch 10 zum Untertisch 9, wird über die Steuerung 15 angesteuert.The actuator elements 21 of the device for regulating the punching or embossing pressure 20 can be controlled individually. The control is done via a controller 15th Also, the punching stroke S, ie the delivery of upper table 10 to the lower table 9, is controlled by the controller 15.

Zur übersichtlicheren Darstellung wurde die Stanzstation 2 ohne Stanzwerkzeuge dargestellt. Die Stanzmesser werden mittels eines Werkzeugrahmens mit dem Obertisch 10 verbunden. Mit dem Untertisch 9 ist eine Gegenstanzplatte verbunden. Das Stanzwerkzeug kann dabei in einer dem Fachmann bekannten Weise ausgeführt sein. Auch Greiferwagen 8 und Bogen 6 sind der Übersichtlichkeit wegen nicht dargestellt. Ihre Position ergibt sich jedoch aus Fig. 1.For a clearer view of the punching station 2 was shown without punching tools. The punching blades are connected to the upper table 10 by means of a tool frame. With the lower table 9 a counter-punching plate is connected. The punching tool can be designed in a manner known to those skilled in the art. Also gripper carriage 8 and 6 sheets are not shown for clarity. Their position, however, arises Fig. 1 ,

Werden die Aktuatorelemente 21 der Vorrichtung zur Regulierung des Stanz- oder Prägedrucks 20 einzeln von der Steuerung 15 angesteuert, so wirken diese mit einer Druckkraft auf den Untertisch 9 und die darüber liegende Gegenstanzplatte. Der Untertisch 9 und die Gegenstanzplatte erfahren dadurch eine minimale Verformung. Durch diese Verformung kann der Abstand a des Obertischs vom Untertisch zonal eingestellt werden, d. h. der Abstand von Stanzmesser zur Gegenstanzplatte und damit der durch ein Stanzmesser auf einen Bogen 6 wirkende Stanzdruck.If the actuator elements 21 of the device for regulating the punching or embossing pressure 20 are actuated individually by the controller 15, they act with a pressure force on the undertable 9 and the overlying counter-punching plate. The undertable 9 and the counter-punching plate thereby undergo minimal deformation. Due to this deformation, the distance a of the upper table from the lower table can be adjusted zonally, i. H. the distance from punching knife to the counter-punching plate and thus the punching pressure acting on a sheet 6 by a punching knife.

Die Aktuatorelemente 21 der Vorrichtung zur Regulierung des Stanz- oder Prägedrucks 20 können in verschiedenen Ausführungsvarianten ausgeführt sein. Diese sind in den Figuren 3a, 3b und 3c dargestellt. Fig. 3a zeigt ein Piezoelement 30, an welches eine Spannung angelegt wird, die eine Verformung der Piezokristalle bewirkt. Die Ansteuerung des Piezoelements geschieht durch die Steuerung der Spannungsquelle. Das Piezoelement 30 ist dabei so ausgeführt, dass sich die Kristalle hauptsächlich in Ausdehnrichtung b ausdehnen. Die Ausdehnung der Piezokristalle in senkrechter Richtung zur Ausdehnrichtung b hingegen wird durch die Zusammensetzung und den konstruktiven Aufbau des Piezoelements 30 verhindert.The actuator elements 21 of the device for regulating the punching or embossing pressure 20 can be embodied in various design variants. These are in the Figures 3a, 3b and 3c shown. Fig. 3a shows a piezoelectric element 30, to which a voltage is applied, which causes a deformation of the piezoelectric crystals. The control of the piezoelectric element is done by the control of the voltage source. The piezoelectric element 30 is designed so that the crystals expand mainly in the expansion direction b. The expansion of the piezocrystals in the direction perpendicular to the expansion direction b, however, is prevented by the composition and structural design of the piezoelectric element 30.

Fig. 3b zeigt eine Hydraulikkammer 31. Diese ist über Schlauchleitungen mit einem Hydraulikaggregat 33 verbunden. Zwischen Hydraulikaggregat 33 und Hydraulikkammer 31 befindet sich ein Ventil 32. Dieses wird von der Steuerung 15 angesteuert. Die Hydraulikkammer 31 ist konstruktiv so aufgebaut, dass eine Erhöhung des Drucks in der Hydraulikkammer 31 eine Ausdehnung des Aktuatorelements 21 in Ausdehnrichtung b bewirkt. Fig. 3b shows a hydraulic chamber 31. This is connected via hose lines with a hydraulic unit 33. Between hydraulic unit 33 and hydraulic chamber 31 is a valve 32. This is controlled by the controller 15. The hydraulic chamber 31 is structurally constructed so that an increase in the pressure in the Hydraulic chamber 31 causes an expansion of the actuator 21 in Ausdehnrichtung b.

In Fig. 3c ist eine elektromechanische Verstellvorrichtung 36 dargestellt. Diese besitzt einen ersten Keil 36.1 und einen zweiten Keil 36.2. Diese gleiten jeweils auf ihren abgeschrägten Flächen aufeinander. Der erste und untere Keil 36.1 kann über ein Getriebe 35 von einem Elektromotor 34 in Verstellrichtung c verschoben werden. Während der Verschiebung c gleitet der zweite und obere Keil 36.2 auf dem unteren Keil 36.1 und wird dadurch in Verstellrichtung d verschoben. Die Steuerung des Aktuatorelements 21 mit elektromechanischer Verstellvorrichtung 36 geschieht durch die Ansteuerung des Elektromotors 34.In Fig. 3c an electromechanical adjusting device 36 is shown. This has a first wedge 36.1 and a second wedge 36.2. These slide on each other on their slanted surfaces. The first and lower wedge 36.1 can be moved via a gear 35 by an electric motor 34 in the adjustment direction c. During the displacement c, the second and upper wedge 36.2 slides on the lower wedge 36.1 and is thus displaced in the adjustment direction d. The control of the actuator 21 with electromechanical adjustment 36 is done by the control of the electric motor 34th

Die Verstellung der Aktuatorelemente 21 in Ausdehnrichtung b bzw. Verstellrichtung d bewirken jeweils eine Druckkraft auf den Obertisch 9.The adjustment of the actuator elements 21 in the expansion direction b or adjustment direction d each cause a compressive force on the upper table 9.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Anlegerinvestor
22
Stanzstationpunching station
33
Ausbrechstationstripping
44
Auslegerboom
55
Maschinengehäusemachine housing
66
Bogenbow
77
Transportsystemtransport system
88th
Greiferwagengripper carriages
99
Untertischunder table
1010
Obertischovertable
1111
Abfallstücketrimmings
1212
Wagendare
1313
Palettepalette
1414
Auslagestapeldelivery pile
1515
Steuerungcontrol
1616
Zuführtischfeed
2020
Vorrichtung zur Regulierung des Stanz- oder PrägedrucksDevice for regulating the punching or embossing pressure
2121
Aktuatorelementactuator
3030
Piezoelementpiezo element
3131
Hydraulikkammerhydraulic chamber
3232
VentilValve
3333
Hydraulikaggregathydraulic power unit
3434
Elektromotorelectric motor
3535
Getriebetransmission
3636
Verstellvorrichtungadjustment
36.136.1
1. Keil Verstellvorrichtung1. wedge adjusting device
36.236.2
2. Keil Verstellvorrichtung2nd wedge adjusting device
100100
Bogenstanz- und -prägemaschineSheet punching and embossing machine
aa
Abstand Obertisch-UntertischDistance from the upper table
bb
Ausdehnrichtung AktuatorelementExpansion direction actuator element
cc
Verstellrichtung 1. KeilAdjustment direction 1. Wedge
dd
Verstellrichtung 2. KeilAdjustment direction 2. Wedge
FF
Bogen-FörderrichtungSheet conveying direction
SS
Stanzhubpunching stroke

Claims (4)

  1. Sheet-fed die-cutting and embossing machine (100) including at least one die-cutting unit (2) with adjustable die-cutting or embossing pressure and having a lower platen (9, 10) fixedly arranged in a machine frame (5) and a second upper platen (9, 10) engageable with the first platen and connected to the machine frame (5) by a cross member with vertical supports,
    characterized in
    that a respective device (20) for adjusting the die-cutting or embossing pressure during operation of the die-cutting and embossing machine (100) is located in the vertical supports of the cross member, and that each device (20) for adjusting the die-cutting or embossing pressure includes at least one actuator element (21) that can be actuated individually.
  2. Sheet-fed die-cutting and embossing machine according to Claim 1,
    characterized in
    that the actuator elements (21) are piezo elements.
  3. Sheet-fed die-cutting and embossing machine according to Claim 1,
    characterized in
    that the actuator elements (21) are hydraulic chambers (31).
  4. Sheet-fed die-cutting and embossing device according to Claim 1,
    characterized in
    that the actuator elements (21) are electric motors (34) that are connected to an adjustment device (36; 36.1, 36.2) by a gearing mechanism (35).
EP07111100A 2006-07-26 2007-06-27 Sheet cutting and creasing press with adjustable cutting and creasing pressure Active EP1882564B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006034511 2006-07-26
DE102006034509 2006-07-26
DE102007014317A DE102007014317A1 (en) 2006-07-26 2007-03-26 Sheet punching and embossing machine with adjustable punching or embossing pressure

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EP1882564A3 EP1882564A3 (en) 2009-07-01
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EP (1) EP1882564B1 (en)
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Also Published As

Publication number Publication date
US20080026090A1 (en) 2008-01-31
EP1882564A2 (en) 2008-01-30
JP2008030188A (en) 2008-02-14
CN101112800B (en) 2012-07-25
EP1882564A3 (en) 2009-07-01
CN101112800A (en) 2008-01-30

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