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EP1567309A1 - Device for punching blanks out of a flat sheet - Google Patents

Device for punching blanks out of a flat sheet

Info

Publication number
EP1567309A1
EP1567309A1 EP03767583A EP03767583A EP1567309A1 EP 1567309 A1 EP1567309 A1 EP 1567309A1 EP 03767583 A EP03767583 A EP 03767583A EP 03767583 A EP03767583 A EP 03767583A EP 1567309 A1 EP1567309 A1 EP 1567309A1
Authority
EP
European Patent Office
Prior art keywords
profile
punching
channel
cross
plate
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.)
Granted
Application number
EP03767583A
Other languages
German (de)
French (fr)
Other versions
EP1567309B1 (en
Inventor
Franz Vossen
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.)
Individual
Original Assignee
Individual
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 DE20301871U external-priority patent/DE20301871U1/en
Application filed by Individual filed Critical Individual
Publication of EP1567309A1 publication Critical patent/EP1567309A1/en
Application granted granted Critical
Publication of EP1567309B1 publication Critical patent/EP1567309B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B26F1/44—Cutters therefor; Dies therefor
    • 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
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • B26D7/025—Means for holding or positioning work with clamping means acting upon planar surfaces
    • 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
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/20—Cutting sheets or blanks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/06—Blanking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096—Means to move product out of contact with tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096—Means to move product out of contact with tool
    • Y10T83/2135—Moving stripper timed with tool stroke
    • Y10T83/215—Carried by moving tool element or its support
    • Y10T83/2155—Stripper biased against product
    • Y10T83/2157—Elastomeric stripper contacting product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096—Means to move product out of contact with tool
    • Y10T83/2135—Moving stripper timed with tool stroke
    • Y10T83/2163—Stripper biased against product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096—Means to move product out of contact with tool
    • Y10T83/217—Stationary stripper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/748—With work immobilizer
    • Y10T83/7487—Means to clamp work

Definitions

  • the invention relates to a device for punching blanks from a sheet; -
  • a device for punching blanks from a sheet In particular of packaging blanks made of cardboard or corrugated cardboard - with a punching knife mounted in a carrier plate, cantilevering from it as a knife or cutting line, and flanking strips made of a limitedly flexible material.
  • packaging blanks can be cut out in groups from a sheet of cardboard or corrugated cardboard.
  • the punching machine processes the so-called printed sheets cyclically;
  • the cutting contours and creasing lines are mainly generated in its punching section.
  • the inventor set himself the goal of eliminating the identified defects, simplifying the handling of the machine parts and achieving an improvement in production.
  • a channel-like profile made of rigid material is arranged on the carrier plate parallel to the punching knife on each of its longitudinal sides, and in this the profile strip with the ridge area of its cross section is inserted; it is therefore not directly connected to the carrier plate, which is preferably formed by a multilayer plywood panel.
  • the cross section of the profile strip has an outwardly directed foot bead at least on one side surface; the punching knife should be flanked on both sides by a lateral foot bead of the profile strips.
  • the side surfaces of the profile strip which are then determined by an almost linear contour, can also be inclined inwards to the profile center line. The choice of this shape depends on the purpose of the profile strip.
  • the profile center line of the profile strip represents its line of symmetry.
  • the rail-like channel profile is provided on its channel legs protruding from a ridge plate with an internal undercut space - receiving a correspondingly shaped area of the profile strip; This can result from the fact that the inner surfaces of the gutter legs are curved inwards in cross-section or by means of gutter legs with a cross-sectionally angular shape and end hook strips pointing towards one another.
  • its ridge plate should be fixed to the wood of the die with liquid adhesive.
  • the ridge plate can also be equipped on the outside with an adhesive layer, which can also be covered by an outer layer in the external use position; if you pull this off, that adhesive layer is freely available as a connecting element.
  • the plate-like punching knife is equipped at a distance from the adjacent gutter legs in the gutter profiles with a cutting edge pointing away from them, and this is provided with notches arranged at a distance from one another; by grinding these cutting lines in certain Set the mentioned breakpoints automatically during the punching process. In a cutting line created in the arch, the notches determine the stopping points for neighboring uses.
  • the profile strip fully fulfills its tasks in the punching process and is nevertheless easy to remove and to be returned. This is guaranteed with the rail in the form of a channel profile, which is glued to the wooden body of the die; this also secures the layer of rubber or the like. elastic material existing profile strip. In addition, a quick exchange with other last types is easily possible, for example with a softer rubber.
  • FIG. 3 shows an enlarged detail from FIG. 2;
  • FIG. 6 a design of a channel profile modified with respect to FIGS. 2, 3, 5
  • a sheet 10 made of this material is fed, for example, to a flatbed punching machine; the sheet 10 shows the contours of eight adjoining blanks 12 for folding boxes; These cuts 12 are intended to produce cyclic punching processes and have creasing lines 14, which dictate the later folding process, and cutting lines 16 which delimit the outside as punching contours. Adjacent cutting lines 16 are connected by pairs of so-called breakpoints 18; the latter are required for further transport of the punched sheet 10 in the punch 20.
  • the cardboard or corrugated cardboard sheet 10 lies below a carrier plate 22 of thickness a of the punch 20 according to FIG. 2 of a punch plate 24.
  • the carrier plate 22 consists of a multilayer plywood plate 22, in which 30 laser cuts 26 have been made in an arrangement corresponding to the contours of the intended packaging in order to accommodate punching knives as so-called knife or cutting lines; often several packages - up to fifty or sixty - are arranged in groups on such a sheet of cardboard or corrugated cardboard 10.
  • Knife or cutting line - punch knife 30 of, for example, thickness b of 0.7 mm, height e of here 24 mm and length f of about 60 mm on it
  • Cutting edge 32 is provided with notches or interruptions 34 of length n of, for example, 1 mm, which are arranged at a distance i from one another and which determine those stopping points 18 in a cutting line 16 formed in sheet 10.
  • the section of the punching knife 30 protruding from the plywood plate 22 is flanked on both sides by gutter profiles 40 of a height c of approximately 2 mm, which are formed from metal, in particular light metal, from plastic or ceramic.
  • the width q of the channel profiles 40 here measures approximately 12 mm.
  • the gutter legs 36 of the gutter profile 40 bonded to the plywood board 22 according to FIGS. 3, 6 by an adhesive layer 38 delimit a gutter space 42 and are curved on the inside in FIG. 2, 3, 5 - with the formation of a lateral undercut space 44 - around which to provide a cross-section correspondingly shaped ridge region 46 of a rubber profile 50 with an almost rectangular cross section of the free height h.
  • Its side surfaces 47 are slightly curved in cross-section away from the ridge region 46 towards the profile center line M and further downward, so that near the Profile base surface 49 creates a kind of foot bead 48 on both sides.
  • the base surfaces 49 of the rubber profiles 50 which are guided in the printing direction x, lie on the sheet 10 on both sides of the corresponding stamping contour 16, while changing the profile cross section (FIG. 4).
  • the cutting lines 30 penetrate into the sheet material, enormous wedge forces arise which destroy the holding points 18.
  • the cross section of the rubber profile 50 is chosen so that additional forces act towards the punching knife 30.
  • Fig. 6 indicates a channel profile 40 a with on both sides angularly inwardly bent channel legs 36 a , the hook bars 37 parallel to the ridge plate 39 of the channel profile 40 a the undercut space. limit.
  • the rubber profile 50 a here has two side surfaces 47 a which are inclined inward towards its center line M.
  • the rubber profiles 50 and 50 a which are seated in the glued channel profiles 40 and 40 a , can be easily removed from them and can be returned. A quick change to other - for example softer - rubber materials is also possible.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Abstract

A device for punching blanks out of a flat sheet, in particular packaging blanks consisting of cardboard or corrugated cardboard, using a punching tool that is mounted in a carrier plate and projects beyond the plate in the form of a blade or cutting line, in addition to profiled strips, consisting of a material of limited flexibility, which flank the tool. A rail-type profiled channel consisting of a rigid material is located on the carrier plate, running parallel to the punching tool on each side of the longitudinal faces of the latter and one cross-sectional area of the profiled strip is inserted into the profiled channel in a positive fit. In addition, at least one lateral face of the cross-section of the profiled strip has a protuberant base.

Description

Beschreibung description
Vorrichtung zum Stanzen von Zuschnitten aus einem Flächen- stücDevice for punching blanks from a surface piece
Die Erfindung betrifft eine Vorrichtung zum Stanzen von Zuschnitten aus einem Flächenstück; -- insbesondere von Verpackungszuschnitten aus Karton- oder Wellpappe — mit in einer Trägerplatte angebrachtem, von dieser als Messeroder Schneidlinie abkragendem Stanzmesser sowie dieses flankierenden Profilleisten aus einem begrenzt flexiblen Werkstoff.The invention relates to a device for punching blanks from a sheet; - In particular of packaging blanks made of cardboard or corrugated cardboard - with a punching knife mounted in a carrier plate, cantilevering from it as a knife or cutting line, and flanking strips made of a limitedly flexible material.
Derartige Vorrichtungen, bei denen das Bandstahl-Messer seitliche Profilleisten aus Gummi oder flexiblen Kunststoff begleiten, sind in der Verpackungsindustrie bekannt. Diese Profilleisten sind an der — beispielsweise aus Sperrholz gefertigten -- Trägerplatte entweder flächig festgeklebt oder mit aus ihnen herausgeformten Wülsten in Nuten der Trägerplatte eingesetzt. In jene Sperrholzplatte sind zur Aufnahme von sog. Schneidlinien Laserschnitte eingebracht.Devices of this type, in which the band steel knife accompany side profile strips made of rubber or flexible plastic, are known in the packaging industry. These profile strips are either glued to the support plate, for example made of plywood, or are inserted with grooves formed from them in grooves in the support plate. Laser cuts are made in that plywood panel to accommodate so-called cutting lines.
Dank dieser Vorrichtung können Verpackungszuschnitte grup- penweise aus einem Karton- oder Wellpappebogen herausgeschnitten werden. Der Stanzautomat verarbeitet die sog. Druckbögen zyklisch; in seiner Stanzsektion werden in der Hauptsache die Schneidkonturen und Rilllinien erzeugt.Thanks to this device, packaging blanks can be cut out in groups from a sheet of cardboard or corrugated cardboard. The punching machine processes the so-called printed sheets cyclically; The cutting contours and creasing lines are mainly generated in its punching section.
Zum Weitertransport des gestanzten Bogens sind sog. Haltepunkte erforderlich, welche die einzelnen Verpackungen — auch Nutzen genannt — zusammenhalten. Beim Eindringen der Schneidlinien in das Bogenmaterial entwickeln sich sehr hohe Keilkräfte, welche trachten die Haltepunkte zu zerstö- ren. Durch das Anbringen der oben erwähnten, beidseitig des Stanzmessers verlaufenden elastischen Profilleisten wird — dank des von ihnen ausgehenden elastischen Druckes — hoher Reibungswiderstand zwischen der Unterseite des Stanzbogens und der Oberfläche der Stanzplatte erzeugt, welcher ein Sprengen der Haltepunkte verhindert. Der Querschnitt der elastischen Profilleiste soll hierbei so gewählt werden, dass zusätzlich Kräfte zum Messer hin wirken.So-called stopping points are required for the further transport of the punched sheet, which hold the individual packages together - also called benefits. When the cutting lines penetrate the sheet material, very high wedge forces develop, which try to destroy the breakpoints. By attaching the above-mentioned elastic profile strips running on both sides of the punching knife, thanks to the elastic pressure emanating from them, there is high frictional resistance between the underside of the punched sheet and the surface of the punch plate, which prevents the breakpoints from exploding. The cross section of the elastic profile strip should be chosen so that additional forces act towards the knife.
Als Nachteil bisheriger Systeme ist u.a. anzusehen, dass bei Messerreparaturen oder Einschleifen von Haltepunkten die Profilleiste entfernt werden muss. Dies ist u.a. deshalb schwierig, da das Holz ausbricht und Profilteile am Holz verbleiben, was eine Reinigung der Oberfläche erfordert. Zudem geht die Basis der Profilleiste verloren und die neuen Profilleisten müssen eingesetzt werden, wobei die Die Ablüftzeit des Klebers eine Stillstandszeit der Maschine verursacht.One disadvantage of previous systems is to see that the profile strip must be removed when repairing knives or grinding in breakpoints. This includes difficult because the wood breaks out and profile parts remain on the wood, which requires cleaning of the surface. In addition, the base of the profile strip is lost and the new profile strips have to be inserted, the flashing time of the adhesive causing the machine to come to a standstill.
In Kenntnis dieser Gegebenheiten hat sich der Erfinder das Ziel gesetzt, die erkannten Mängel zu beseitigen, die Handhabung der Maschinenteile zu vereinfachen sowie eine Produktionsverbesserung zu erreichen.Knowing these conditions, the inventor set himself the goal of eliminating the identified defects, simplifying the handling of the machine parts and achieving an improvement in production.
Zur Lösung dieser Aufgabe führt die" Lehre des unabhängigen Anspruches; die Unteransprüche geben günstige Weiterbildungen an. Zudem fallen in den Rahmen der Erfindung alle Kombinationen aus zumindest zwei der in der Beschreibung, der Zeichnung und/oder den Ansprüchen offenbarten Merkmale.The " teaching of the independent claim leads to the solution of this problem; the subclaims indicate favorable further developments. In addition, all combinations of at least two of the features disclosed in the description, the drawing and / or the claims fall within the scope of the invention.
Erfindungsgemäß ist an der Trägerplatte parallel zu dem Stanzmesser an jeder seiner Längsseiten ein rinnenartiges Profil aus starrem Werkstoff angeordnet, und in dieses ist die Profilleiste mit dem Firstbereich ihres Querschnittes eingesetzt; sie ist also nicht unmittelbar mit der — bevorzugt von einer vielschichtigen Sperrholzplatte gebildeten — Trägerplatte verbunden. Dazu hat es sich als günstig erwiesen, die Profilleiste formschlüssig in dem schienenar- tigen Rinnenprofil unterzubringen, so dass seine Entnahme ohne Zerstörung möglich ist. Nach einem anderen Merkmal der Erfindung weist der Querschnitt der Profilleiste zumindest an einer Seitenfläche einen nach außen gerichteten Fußwulst auf; das Stanzmesser soll beidseits von jeweils einem seitlichen Fußwulst der Profilleisten flankiert werden. Die — dann von einer fast linearen Kontur bestimmten -- Seitenflächen der Profilleiste können aber auch zu der Profilmittellinie einwärts geneigt sein. Die Wahl dieser Form hängt vom Einsatzzweck der Profilleiste ab.According to the invention, a channel-like profile made of rigid material is arranged on the carrier plate parallel to the punching knife on each of its longitudinal sides, and in this the profile strip with the ridge area of its cross section is inserted; it is therefore not directly connected to the carrier plate, which is preferably formed by a multilayer plywood panel. For this purpose, it has proven to be advantageous to fit the profile strip in the rail-like channel profile so that it can be removed without being destroyed. According to another feature of the invention, the cross section of the profile strip has an outwardly directed foot bead at least on one side surface; the punching knife should be flanked on both sides by a lateral foot bead of the profile strips. The side surfaces of the profile strip, which are then determined by an almost linear contour, can also be inclined inwards to the profile center line. The choice of this shape depends on the purpose of the profile strip.
In allen Fällen ist es vorteilhaft, wenn die Profilmittellinie der Profilleiste deren Symmetrielinie darstellt.In all cases, it is advantageous if the profile center line of the profile strip represents its line of symmetry.
Es liegt im Rahmen der Erfindung, dass das schienenartige Rinnenprofil an seinen von einer Firstplatte abragenden Rinnenschenkeln mit einem innenliegenden -- einen entsprechend geformten Bereich der Profilleiste aufnehmenden — Hinterschneidungsraum versehen ist; dieser kann dadurch entstehen, dass die Innenflächen der Rinnenschenkel quer- schnittlich einwärts gekrümmt sind oder durch querschnittlich winkelförmig geformte Rinnenschenkel mit zueinander weisenden endwärtigen Hakenleisten.It is within the scope of the invention that the rail-like channel profile is provided on its channel legs protruding from a ridge plate with an internal undercut space - receiving a correspondingly shaped area of the profile strip; This can result from the fact that the inner surfaces of the gutter legs are curved inwards in cross-section or by means of gutter legs with a cross-sectionally angular shape and end hook strips pointing towards one another.
Um die Festlegung des Rinnenprofils an der Trägerplatte zu vereinfachen, soll dessen Firstplatte mit Flüssigkleber am Holz der Stanzform festgelegt werden. Die Firstplatte kann aber auch außenseitig mit einer Klebeschicht ausgerüstet sein, die im übrigen in Außengebrauchslage von einer Deckschicht abgedeckt werden kann; zieht man diese ab, steht jene Klebeschicht als Verbindungselement zur freien Verfügung.In order to simplify the determination of the channel profile on the carrier plate, its ridge plate should be fixed to the wood of the die with liquid adhesive. The ridge plate can also be equipped on the outside with an adhesive layer, which can also be covered by an outer layer in the external use position; if you pull this off, that adhesive layer is freely available as a connecting element.
Nach einem weiteren Merkmal der Erfindung ist das plattenartige Stanzmesser in Abstand zu den benachbarten Rinnen- schenkein der Rinnenprofile mit einer von diesen weg weisenden Schneide ausgerüstet, und diese ist mit in Abstand voneinander angeordneten Einkerbungen versehen; durch das Einschleifen dieser Schneidlinien entstehen an bestimmten Stellen die erwähnten Haltepunkte beim Stanzvorgang automatisch. In einer im Bogen entstehenden Schneidlinie bestimmen die Einkerbungen die Haltepunkte für benachbarte Nutzen.According to a further feature of the invention, the plate-like punching knife is equipped at a distance from the adjacent gutter legs in the gutter profiles with a cutting edge pointing away from them, and this is provided with notches arranged at a distance from one another; by grinding these cutting lines in certain Set the mentioned breakpoints automatically during the punching process. In a cutting line created in the arch, the notches determine the stopping points for neighboring uses.
Es ist ideal, wenn die Profilleiste ihre Aufgaben beim Stanzprozess vollumfänglich erfüllt und dennoch leicht zu entnehmen sowie wieder zurückzuführen ist. Dies ist mit der oben beschriebenen auf den Holzkörper der Stanzform aufge- klebten Schiene in Form eines Rinnenprofils gewährleistet; diese sichert auch die Lage aus Gummi od.dgl. elastischen Werkstoff bestehenden Profilleiste. Zudem ist ein schneller Austausch mit anderen Leistensorten ohne weiteres möglich, beispielsweise mit einem weicheren Gummi. It is ideal if the profile strip fully fulfills its tasks in the punching process and is nevertheless easy to remove and to be returned. This is guaranteed with the rail in the form of a channel profile, which is glued to the wooden body of the die; this also secures the layer of rubber or the like. elastic material existing profile strip. In addition, a quick exchange with other last types is easily possible, for example with a softer rubber.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt in:Further advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the drawing; this shows in:
Fig. 1: eine Draufsicht auf eine Stanzform eines Stanzautomaten mit aufliegenden Faltschachtelzuschnitten;1: a plan view of a punching die of an automatic punching press with folding box blanks lying on top;
Fig. 2, 5: gegenüber Fig. 1 vergrößerte Ausschnitte zu einem Stanzvorgang im Querschnitt eines Werkzeuges, das zwei in Rinnenprofile eingreifende Gummistreifen enthält;2, 5: sections enlarged compared to FIG. 1 for a punching process in cross section of a tool which contains two rubber strips engaging in channel profiles;
Fig. 3: einen vergrößerten Ausschnitt aus Fig. 2;3 shows an enlarged detail from FIG. 2;
Fig. 4: einen Teil eines Messers in Schrägsicht;4: a part of a knife in an oblique view;
Fig. 6: eine gegenüber Fig. 2,3,5 veränderte Ausgestaltung eines Rinnenprofils mitFIG. 6: a design of a channel profile modified with respect to FIGS. 2, 3, 5
Gummistreifen.Rubber strips.
Zum Stanzen von Verpackungen aus Karton oder Wellpappe wird ein Bogen 10 aus diesem Werkstoff beispielsweise einem Flachbett-Stanzautomaten zugeführt; der Bogen 10 lässt die Konturen von acht aneinandergrenzenden Zuschnitten 12 für Faltschachteln erkennen; durch diese Zuschnitte 12 sollen zyklische Stanzvorgänge entstehen und weisen — den späte- ren Faltvorgang vorgebende — Rilllinien 14 auf sowie außen begrenzende Schneidlinien 16 als Stanzkonturen. Benachbarte Schneidlinien 16 sind durch Paare sog. Haltepunkte 18 verbunden; letztere sind zum Weitertransport des gestanzten Bogens 10 im Stanzwerkzeug 20 erforderlich. Während seiner Bearbeitung liegt der Karton- oder Wellpappebogen 10 unterhalb einer Trägerplatte 22 der Dicke a des Stanzwerkzeuges 20 gemäß Fig. 2 einer Stanzplatte 24 auf. Die Trägerplatte 22 besteht aus einer vielschichtigen Sperrholzplatte 22, in der zur Aufnahme von Stanzmessern als sog. Messer- oder Schneidlinien 30 Laserschnitte 26 in einer den Konturen der vorgesehenen Verpackungen entsprechenden Anordnung eingebracht worden sind; vielfach sind mehrere Verpackungen -- bis zu fünfzig oder sechzig — in Gruppen auf einem derartigen Karton- oder Wellpappebogen 10 angeordnet .For punching packaging out of cardboard or corrugated cardboard, a sheet 10 made of this material is fed, for example, to a flatbed punching machine; the sheet 10 shows the contours of eight adjoining blanks 12 for folding boxes; These cuts 12 are intended to produce cyclic punching processes and have creasing lines 14, which dictate the later folding process, and cutting lines 16 which delimit the outside as punching contours. Adjacent cutting lines 16 are connected by pairs of so-called breakpoints 18; the latter are required for further transport of the punched sheet 10 in the punch 20. During its processing, the cardboard or corrugated cardboard sheet 10 lies below a carrier plate 22 of thickness a of the punch 20 according to FIG. 2 of a punch plate 24. The carrier plate 22 consists of a multilayer plywood plate 22, in which 30 laser cuts 26 have been made in an arrangement corresponding to the contours of the intended packaging in order to accommodate punching knives as so-called knife or cutting lines; often several packages - up to fifty or sixty - are arranged in groups on such a sheet of cardboard or corrugated cardboard 10.
Wie Fig. 4 verdeutlicht, ist das -- wie gesagt: als Messeroder Schneidlinie bezeichnete -- Stanzmesser 30 der bei- spielsweisen Dicke b von 0,7 mm, der Höhe e von hier 24 mm sowie der Länge f von etwa 60 mm an seiner Schneide 32 mit — in Abstand i voneinander angeordneten — Einkerbungen oder Unterbrechungen 34 der Länge n von beispielsweise 1 mm ausgerüstet, die in einer im Bogen 10 entstehenden Schneid- linie 16 jene Haltepunkte 18 bestimmen.As illustrated in FIG. 4, this is - as said: Knife or cutting line - punch knife 30 of, for example, thickness b of 0.7 mm, height e of here 24 mm and length f of about 60 mm on it Cutting edge 32 is provided with notches or interruptions 34 of length n of, for example, 1 mm, which are arranged at a distance i from one another and which determine those stopping points 18 in a cutting line 16 formed in sheet 10.
Der aus der Sperrholzplatte 22 ragende Abschnitt des Stanzmessers 30 wird beidseits von -- aus Metall, insbesondere Leichtmetall, aus Kunststoff oder Keramik geformten — Rin- nenprofilen 40 der Höhe c von etwa 2 mm flankiert. Die Breite q der Rinnenprofile 40 misst hier etwa 12 mm. Die Rinnenschenkel 36 des mit der Sperrholzplatte 22 gemäß Fig. 3, 6 durch eine Klebeschicht 38 verklebten Rinnenprofils 40 begrenzen einen Rinnenraum 42 und sind in Fig. 2,3,5 querschnittlich innenseitig — unter Bildung jeweils eines seitlichen Hinterschneidungsraumes 44 — gekrümmt, um dem querschnittlich entsprechend geformten Firstbereich 46 eines Gummiprofils 50 nahezu rechteckigen Querschnitts der freien Höhe h klemmenden Halt zu bieten. Dessen Seitenflächen 47 sind vom Firstbereich 46 weg querschnittlich ein wenig zur Profilmittellinie M hin sowie weiter abwärts nach außen gekrümmt, so dass nahe der Profilbasisfläche 49 beidseits eine Art Fußwulst 48 entsteht.The section of the punching knife 30 protruding from the plywood plate 22 is flanked on both sides by gutter profiles 40 of a height c of approximately 2 mm, which are formed from metal, in particular light metal, from plastic or ceramic. The width q of the channel profiles 40 here measures approximately 12 mm. The gutter legs 36 of the gutter profile 40 bonded to the plywood board 22 according to FIGS. 3, 6 by an adhesive layer 38 delimit a gutter space 42 and are curved on the inside in FIG. 2, 3, 5 - with the formation of a lateral undercut space 44 - around which to provide a cross-section correspondingly shaped ridge region 46 of a rubber profile 50 with an almost rectangular cross section of the free height h. Its side surfaces 47 are slightly curved in cross-section away from the ridge region 46 towards the profile center line M and further downward, so that near the Profile base surface 49 creates a kind of foot bead 48 on both sides.
Während des Stanzvorganges legen sich die in Druckrichtung x geführten Basisflächen 49 der Gummiprofile 50 beidseits der entsprechenden Stanzkontur 16 -- unter Veränderung des Profilquerschnittes -- auf den Bogen 10 (Fig. 4) . Beim Eindringen der Schneidlinien 30 in das Bogenmaterial entstehen enorme Keilkräfte, welche die Haltepunkte 18 zerstören. Durch das Einbringen der Gummiprofile 50 beidseitig des Stanzmessers 30 wird durch deren Druck hoher Reibungswiderstand zwischen der Unterseite des Bogens 10 und der Oberfläche der Stanzplatte 24 erzeugt, der ein Sprengen der Haltepunkte 18 verhindert. Der Querschnitt des Gummiprofils 50 ist hierbei so gewählt, dass zusätzlich Kräfte zum Stanzmesser 30 hin wirken.During the stamping process, the base surfaces 49 of the rubber profiles 50, which are guided in the printing direction x, lie on the sheet 10 on both sides of the corresponding stamping contour 16, while changing the profile cross section (FIG. 4). When the cutting lines 30 penetrate into the sheet material, enormous wedge forces arise which destroy the holding points 18. By introducing the rubber profiles 50 on both sides of the punching knife 30, their pressure creates high frictional resistance between the underside of the sheet 10 and the surface of the punching plate 24, which prevents the breakpoints 18 from blasting. The cross section of the rubber profile 50 is chosen so that additional forces act towards the punching knife 30.
Fig. 6 deutet ein Rinnenprofil 40a an mit beidseits winkelförmig einwärts gebogenen Rinnenschenkeln 36a, deren zur Firstplatte 39 des Rinnenprofils 40a parallele Hakenleisten 37 den Hinterschneidungsraum . begrenzen. Das Gummiprofil 50a weist hier zwei zu dessen Mittellinie M einwärts geneigte Seitenflächen 47a auf.Fig. 6 indicates a channel profile 40 a with on both sides angularly inwardly bent channel legs 36 a , the hook bars 37 parallel to the ridge plate 39 of the channel profile 40 a the undercut space. limit. The rubber profile 50 a here has two side surfaces 47 a which are inclined inward towards its center line M.
Die in den angeklebten Rinnenprofilen 40 bzw. 40a sitzenden Gummiprofile 50 bzw. 50a sind jenen leicht zu entnehmen und wieder zurückführbar. Auch ist ein schneller Wechsel zu anderen — z.B. weicheren -- Gummimaterialien möglich. The rubber profiles 50 and 50 a, which are seated in the glued channel profiles 40 and 40 a , can be easily removed from them and can be returned. A quick change to other - for example softer - rubber materials is also possible.

Claims

PATENTANSPRÜCHE
1. Vorrichtung zum Stanzen von Zuschnitten aus einem Flächenstück (10), insbesondere von Verpackungszuschnitten (12) aus Karton- oder Wellpappe, mit in einer Trägerplatte (22) angebrachtem, von dieser als Messeroder Schneidlinie abkragendem Stanzmesser sowie dieses flankierenden Profilleisten (50, 50a) aus einem be- grenzt flexiblen Werkstoff,1.Device for punching blanks from a flat piece (10), in particular packaging blanks (12) made of cardboard or corrugated cardboard, with a punching knife attached in a carrier plate (22) and projecting therefrom as a knife or cutting line, as well as profile strips flanking it (50, 50 a ) from a limitedly flexible material,
dadurch gekennzeichnet,characterized,
dass an der Trägerplatte (22) parallel zu dem Stanzmes- ser (30) an jeder seiner Längsseiten ein rinnenartiges Profil (40, 40a) aus starrem Werkstoff angeordnet und in dieses die Profilleiste (50, 50a) mit einem Bereich (46) ihres Querschnittes eingesetzt ist.that a channel-like profile (40, 40 a ) made of rigid material is arranged on the carrier plate (22) parallel to the punching knife (30) on each of its longitudinal sides and in this the profile strip (50, 50 a ) with an area (46) their cross section is used.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Profilleiste (50, 50a) formschlüssig in dem schienenartigen Rinnenprofil (40, 40a) angeordnet ist.2. Device according to claim 1, characterized in that the profile strip (50, 50a) is arranged positively in the rail-like channel profile (40, 40 a ).
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Querschnitt der Profilleiste3. Device according to claim 1 or 2, characterized in that the cross section of the profile strip
(50) zumindest an einer Seitenfläche (47) einen nach außen gerichteten Fußwulst (48) aufweist.(50) has an outwardly directed foot bead (48) at least on one side surface (47).
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das Stanzmesser (30) beidseits von jeweils einem4. The device according to claim 3, characterized in that the punch knife (30) on both sides of one
Fußwulst (48) der Profilleisten (50) flankiert ist (Fig. 2) .Foot bead (48) of the profile strips (50) is flanked (Fig. 2).
5. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Seitenflächen (47a) der Profilleiste (50a) zu deren Profilmittellinie (M) einwärts geneigt sind. 5. The device according to claim 1 or 2, characterized in that the side surfaces (47 a ) of the profile strip (50 a ) to the profile center line (M) are inclined inwards.
6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Profilmittellinie (M) der Profilleiste (50, 50a) deren Symmetrielinie ist.6. Device according to one of claims 1 to 5, characterized in that the profile center line (M) of the profile strip (50, 50 a ) is the line of symmetry.
7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Rinnenprofil (40, 40a) an seinen von einer Firstplatte (38) abragenden Rinnenschenkeln (36, 36a) mit einem innenliegenden Hinter- schneidungsraum (44) versehen ist.7. Device according to one of claims 1 to 6, characterized in that the channel profile (40, 40 a ) is provided on its gutter legs (36, 36 a ) projecting from a ridge plate (38) with an internal undercut space (44) ,
8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Innenfläche des Rinnenschenkels (36) querschnittlich einwärts gekrümmt ist (Fig. 3) .8. Device according to one of claims 1 to 7, characterized in that the inner surface of the gutter leg (36) is curved in cross-section inward (Fig. 3).
9. Vorrichtung nach einem der Ansprüche 1 bis 7, gekennzeichnet durch querschnittlich winkelförmig geformte Rinnenschenkel (36a) mit zueinander weisenden endwärti- gen Hakenleisten (37) (Fig. 6).9. Device according to one of claims 1 to 7, characterized by cross-sectional angularly shaped gutter legs (36 a ) with mutually facing end hook strips (37) (Fig. 6).
10. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Firstplatte (39) des Rinnenprofils (40, 40a) an der bevorzugt aus Holz gefertigten Trägerplatte (22) der Stanzform festgelegt ist.10. Device according to one of claims 1 to 9, characterized in that the ridge plate (39) of the channel profile (40, 40 a ) is fixed to the preferably made of wood carrier plate (22) of the die.
11. Vorrichtung nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, dass die Firstplatte (39) des Rinnenprofils (40, 40a) durch einen Flüssigkleber an der Stanzform befestigt ist.11. The device according to one of claims 7 to 10, characterized in that the ridge plate (39) of the channel profile (40, 40 a ) is attached to the die by a liquid adhesive.
12. Vorrichtung nach einem der Ansprüche 7" bis 10, dadurch gekennzeichnet, dass die Firstplatte (39) des Rinnenprofils (40, 40a) außenseitig mit einer Klebeschicht (38) ausgerüstet ist. 12. Device according to one of claims 7 " to 10, characterized in that the ridge plate (39) of the channel profile (40, 40 a ) is equipped on the outside with an adhesive layer (38).
13. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass die Klebeschicht (38) außer Gebrauch von einer Deckschicht abgedeckt ist.13. The apparatus according to claim 12, characterized in that the adhesive layer (38) is covered when not in use by a cover layer.
14. Vorrichtung nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass das plattenartige Stanzmesser (30) in Abschnitt zu den benachbarten Rinnenschenkeln (36, 36a) der Rinnenprofile (40, 40a) mit einer von diesen weg weisenden Schneide (32) und diese mit in Abstand (i) voneinander angebrachten Einkerbungen versehen ist. 14. Device according to one of claims 1 to 13, characterized in that the plate-like punch knife (30) in section to the adjacent gutter legs (36, 36 a ) of the gutter profiles (40, 40 a ) with a cutting edge pointing away from them (32 ) and this is provided with notches spaced apart (i).
EP03767583A 2002-11-21 2003-11-20 Device for punching blanks out of a flat sheet Expired - Lifetime EP1567309B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE20218147 2002-11-21
DE20218147U 2002-11-21
DE20301871U 2003-02-07
DE20301871U DE20301871U1 (en) 2002-11-21 2003-02-07 Cardboard box and packaging support has a base made from cardboard and sections which are cut away and have a cyclical support
PCT/EP2003/013005 WO2004045811A1 (en) 2002-11-21 2003-11-20 Device for punching blanks out of a flat sheet

Publications (2)

Publication Number Publication Date
EP1567309A1 true EP1567309A1 (en) 2005-08-31
EP1567309B1 EP1567309B1 (en) 2006-05-17

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ID=32094886

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EP03767583A Expired - Lifetime EP1567309B1 (en) 2002-11-21 2003-11-20 Device for punching blanks out of a flat sheet

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US (1) US8201482B2 (en)
EP (1) EP1567309B1 (en)
JP (1) JP2006507139A (en)
AT (1) ATE326316T1 (en)
AU (1) AU2003292053A1 (en)
DE (2) DE20317993U1 (en)
WO (1) WO2004045811A1 (en)

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Publication number Publication date
WO2004045811A1 (en) 2004-06-03
US8201482B2 (en) 2012-06-19
DE50303400D1 (en) 2006-06-22
DE20317993U1 (en) 2004-04-01
EP1567309B1 (en) 2006-05-17
AU2003292053A1 (en) 2004-06-15
ATE326316T1 (en) 2006-06-15
US20060112803A1 (en) 2006-06-01
JP2006507139A (en) 2006-03-02

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