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EP1567309B1 - Device for punching blanks out of a flat sheet - Google Patents

Device for punching blanks out of a flat sheet Download PDF

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Publication number
EP1567309B1
EP1567309B1 EP03767583A EP03767583A EP1567309B1 EP 1567309 B1 EP1567309 B1 EP 1567309B1 EP 03767583 A EP03767583 A EP 03767583A EP 03767583 A EP03767583 A EP 03767583A EP 1567309 B1 EP1567309 B1 EP 1567309B1
Authority
EP
European Patent Office
Prior art keywords
channel
section
profiled
punching
cross
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03767583A
Other languages
German (de)
French (fr)
Other versions
EP1567309A1 (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
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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

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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
    • B26F1/44—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 - in particular of packaging blanks made of cardboard or corrugated board - mounted in a support plate, abkragendem this as a knife or cutting line punching blade and this flanking profiled strips of a limited flexible material.
  • packaging blanks can be cut in groups from a cardboard or corrugated board sheet.
  • the punching machine processes the so-called signatures cyclically; in its punching section, the cutting contours and creasing lines are mainly produced.
  • Breakpoints are required, which called the individual packages also benefit - together.
  • the cross section of the elastic profiled strip should in this case be chosen so that additional forces act on the knife.
  • the inventor has set the goal to eliminate the identified shortcomings, to simplify the handling of the machine parts and to achieve a production improvement.
  • a groove-like profile of rigid material is arranged on the support plate parallel to the punching knife on each of its longitudinal sides, and in this the profile strip is inserted with the ridge region of its cross section; it is therefore not directly connected to the - preferably formed by a multi-layer plywood - support plate.
  • the punching knife should be flanked on both sides by a lateral foot bead of the profile strips.
  • the - then determined by an almost linear contour - side surfaces of the profile strip can also be inclined inwards to the profile centerline. The choice of this form depends on the purpose of the profile strip.
  • the profile center line of the profile strip represents its symmetry line.
  • the rail-like channel profile is provided at its projecting from a ridge plate gutter legs with an inner a correspondingly shaped portion of the profile strip receiving Schuschneidungsraum; this may arise from the fact that the inner surfaces of the gutter legs are curved inwardly in a cross-section or by cross-shaped angularly shaped gutter legs with endskyrtigen hook strips facing each other.
  • the ridge plate can also be equipped on the outside with an adhesive layer, which can be covered in the rest in outdoor use position of a cover layer; If you pull this off, is that adhesive layer as a connecting element at leisure.
  • the plate-like punching knife is equipped at a distance from the adjacent gutter legs of the gutter profiles with a pointing away from this cutting edge, and this is provided with spaced notches; by grinding these cutting lines arise at certain Make the mentioned stops during the punching process automatically.
  • the notches define the breakpoints for adjacent benefits.
  • the profiled strip fully fulfills its tasks during the stamping process and yet is easy to remove and return. This is ensured with the above-described adhered to the wood body of the die in the form of a channel profile; this also secures the rubber layer or the like. elastic material existing profile strip. In addition, a quick exchange with other types of flax is readily possible, for example with a softer rubber.
  • the sheet 10 For punching packaging made of cardboard or corrugated cardboard sheet 10 is fed from this material, for example, a flat bed stamping machine; the sheet 10 shows the contours of eight contiguous blanks 12 for cartons; By means of these blanks 12, cyclic punching processes are to be created and have creasing lines 14 which predetermine the subsequent folding process, as well as cutting lines 16 limiting 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 punching tool 20.
  • the cardboard or corrugated board sheet 10 lies below a carrier plate 22 of the thickness a of the punching tool 20 according to FIG. 2 of a punching plate 24.
  • the carrier plate 22 consists of a multi-layered plywood plate 22 in which 30 laser cuts 26 have been introduced in an arrangement corresponding to the contours of the intended packaging for receiving punching knives as so-called. Knife or cutting lines; In many cases, several packages - up to fifty or sixty - are arranged in groups on such a cardboard or corrugated board 10.
  • the punching blade 30 of the exemplary thickness b of 0.7 mm, the height e of here 24 mm and the length f of approximately 60 mm on its side is referred to as the knife or cutting line Cutting edge 32 equipped with - spaced apart from each other - notches or interruptions 34 of length n, for example, 1 mm, which determine in a sheet 10 formed in the cutting line 16 those breakpoints 18.
  • the protruding from the plywood plate 22 portion of the punch blade 30 is flanked on both sides of - made of metal, in particular light metal, plastic or ceramic - shaped channel profiles 40 of height c of about 2 mm.
  • the width q of the channel profiles 40 here measures about 12 mm.
  • the gutter legs 36 of the plywood panel 22 according to FIGS. 3, 6 bonded by an adhesive layer 38 delimit a channel space 42 and are curved on the inside in FIG. 2, 3, forming a lateral undercut area 44, respectively. to provide the cross-sectionally shaped first region 46 of a rubber profile 50 of almost rectangular cross-section of the free height h clamping stop.
  • Whose side surfaces 47 are away from the ridge region 46 a little bit to the profile centerline M down and further downwardly curved outward, so that close to the Profile base surface 49 on both sides a kind of diligentwulst 48 arises.
  • the base surfaces 49 of the rubber profiles 50 which are guided in the pressure direction x, lie on the sheet 10 on both sides of the corresponding punching contour 16, changing the profile cross section (FIG. 4).
  • the rubber profiles 50 on both sides of the punching blade 30 is generated by the pressure of high frictional resistance between the underside of the sheet 10 and the surface of the punching plate 24, which prevents blasting of the breakpoints 18.
  • the cross section of the rubber profile 50 is in this case selected so that in addition act forces to the punching blade 30 out.
  • Fig. 6 indicates a gutter profile 40 a with both sides angularly inwardly bent gutter legs 36 a , whose to the ridge plate 39 of the channel profile 40 a parallel hook strips 37 define the undercut space 44.
  • the rubber profile 50 a here has two to the center line M inwardly inclined side surfaces 47 a .
  • the seated in the glued channel profiles 40 and 40 a rubber profiles 50 and 50 a are easy to remove and again traceable. Also a quick change to other - eg softer - rubber materials is possible.

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  • 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

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 Messer- oder 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 board - mounted in a support plate, abkragendem this as a knife or cutting line punching blade and this flanking profiled strips of a limited flexible material.

Derartige Vorrichtungen, siehe z.B. US 5,176,613 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 Wulsten in Nuten der Trägerplatte eingesetzt. In jene Sperrholzplatte sind zur Aufnahme von sog. Schneidlinien Laserschnitte eingebracht.Such devices, see e.g. US 5,176,613 in which the steel strip knife accompany side moldings made of rubber or flexible plastic, are known in the packaging industry. This profile strips are glued to the - for example, made of plywood - support plate either flat or used with molded out of them beads in grooves of the support plate. In those plywood slab laser cuts are made for receiving so-called cutting lines.

Dank dieser Vorrichtung können Verpackungszuschnitte gruppenweise 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 in groups from a cardboard or corrugated board sheet. The punching machine processes the so-called signatures cyclically; in its punching section, the cutting contours and creasing lines are mainly produced.

Zum Weitertransport des gestanzten Bogens sind sog. Haltepunkte erforderlich, welche die einzelnen Verpackungenauch Nutzen genannt -- zusammenhalten. Beim Eindringen der Schneidlinien in das Bogenmaterial entwickeln sich sehr hohe Keilkräfte, welche trachten die Haltepunkte zu zerstören. Durch das Anbringen der oben erwähnten, beidseitig des Stanzmessers verlaufenden elastischen Profilleisten wirddank 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.For further transport of the punched sheet so-called. Breakpoints are required, which called the individual packages also benefit - together. When the cutting lines penetrate into the sheet material, very high wedging forces develop, which tend to destroy the holding points. By attaching the above-mentioned, extending on both sides of the punch blade elastic profile strips is due to the elastic pressure emanating from them - high frictional resistance between the underside of the punching sheet and the surface of the punching plate generated, which prevents blasting of the breakpoints. The cross section of the elastic profiled strip should in this case be chosen so that additional forces act on 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.As a disadvantage of previous systems u.a. to see that in knife repairs or grinding in breakpoints the profile strip must be removed. This is i.a. therefore difficult because the wood breaks out and profile parts remain on the wood, which requires a cleaning of the surface. In addition, the base of the profile strip is lost and the new moldings must be used, whereby the drying time of the adhesive causes a downtime of the machine.

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 circumstances, the inventor has set the goal to eliminate the identified shortcomings, to simplify the handling of the machine parts and to achieve a production improvement.

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.To achieve this object, the teaching of the independent claim; the dependent claims indicate favorable developments. In addition, all combinations of at least two of the features disclosed in the description, the drawings 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 schienenartigen Rinnenprofil unterzubringen, so dass seine Entnahme ohne Zerstörung möglich ist.According to the invention, a groove-like profile of rigid material is arranged on the support plate parallel to the punching knife on each of its longitudinal sides, and in this the profile strip is inserted with the ridge region of its cross section; it is therefore not directly connected to the - preferably formed by a multi-layer plywood - support plate. For this purpose, it has proved to be beneficial to accommodate the profile strip in a form-fitting manner in the rail-like channel profile, so that its removal is possible without destruction.

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 another feature of the invention, the cross section of the profile strip on at least one side surface on an outwardly directed Fußwulst on; The punching knife should be flanked on both sides by a lateral foot bead of the profile strips. The - then determined by an almost linear contour - side surfaces of the profile strip can also be inclined inwards to the profile centerline. The choice of this form 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 symmetry line.

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 aufnehmendenHinterschneidungsraum versehen ist; dieser kann dadurch entstehen, dass die Innenflächen der Rinnenschenkel querschnittlich 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 at its projecting from a ridge plate gutter legs with an inner a correspondingly shaped portion of the profile strip receiving Hinterschneidungsraum; this may arise from the fact that the inner surfaces of the gutter legs are curved inwardly in a cross-section or by cross-shaped angularly shaped gutter legs with endwärtigen hook strips facing each other.

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.To simplify the determination of the channel profile on the support plate, whose ridge plate should be fixed with liquid adhesive on the wood of the die. The ridge plate can also be equipped on the outside with an adhesive layer, which can be covered in the rest in outdoor use position of a cover layer; If you pull this off, is that adhesive layer as a connecting element at leisure.

Nach einem weiteren Merkmal der Erfindung ist das plattenartige Stanzmesser in Abstand zu den benachbarten Rinnenschenkeln 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 of the gutter profiles with a pointing away from this cutting edge, and this is provided with spaced notches; by grinding these cutting lines arise at certain Make the mentioned stops during the punching process automatically. In a cutting line formed in the arc, the notches define the breakpoints for adjacent benefits.

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 aufgeklebten 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 profiled strip fully fulfills its tasks during the stamping process and yet is easy to remove and return. This is ensured with the above-described adhered to the wood body of the die in the form of a channel profile; this also secures the rubber layer or the like. elastic material existing profile strip. In addition, a quick exchange with other types of flax is readily 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:

Fig. 1:
eine Draufsicht auf eine Stanzform eines Stanzautomaten mit aufliegenden Faltschachtelzuschnitten;
Fig. 2, 5:
gegenüber Fig. 1 vergrößerte Ausschnitte zu einem Stanzvorgang im Querschnitt eines Werkzeuges, das zwei in Rinnenprofile eingreifende Gummistreifen enthält;
Fig. 3:
einen vergrößerten Ausschnitt aus Fig. 2;
Fig. 4:
einen Teil eines Messers in Schrägsicht;
Fig. 6:
eine gegenüber Fig. 2,3,5 veränderte Ausgestaltung eines Rinnenprofils mit Gummistreifen.
Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing; this shows in:
Fig. 1:
a plan view of a punching of a stamping machine with resting Faltschachtelzuschnitten;
Fig. 2, 5:
compared to Figure 1 enlarged sections to a punching operation in the cross-section of a tool containing two engaging in gutter profiles rubber strip.
3:
an enlarged detail of Fig. 2;
4:
a part of a knife in oblique view;
Fig. 6:
a comparison with Fig. 2,3,5 modified embodiment of a gutter profile with 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 späteren 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.For punching packaging made of cardboard or corrugated cardboard sheet 10 is fed from this material, for example, a flat bed stamping machine; the sheet 10 shows the contours of eight contiguous blanks 12 for cartons; By means of these blanks 12, cyclic punching processes are to be created and have creasing lines 14 which predetermine the subsequent folding process, as well as cutting lines 16 limiting 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 punching tool 20.

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.During its processing, the cardboard or corrugated board sheet 10 lies below a carrier plate 22 of the thickness a of the punching tool 20 according to FIG. 2 of a punching plate 24. The carrier plate 22 consists of a multi-layered plywood plate 22 in which 30 laser cuts 26 have been introduced in an arrangement corresponding to the contours of the intended packaging for receiving punching knives as so-called. Knife or cutting lines; In many cases, several packages - up to fifty or sixty - are arranged in groups on such a cardboard or corrugated board 10.

Wie Fig. 4 verdeutlicht, ist das -- wie gesagt: als Messer- oder Schneidlinie bezeichnete -- Stanzmesser 30 der beispielsweisen 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 Schneidlinie 16 jene Haltepunkte 18 bestimmen.As illustrated in FIG. 4, the punching blade 30 of the exemplary thickness b of 0.7 mm, the height e of here 24 mm and the length f of approximately 60 mm on its side is referred to as the knife or cutting line Cutting edge 32 equipped with - spaced apart from each other - notches or interruptions 34 of length n, for example, 1 mm, which determine in a sheet 10 formed in the cutting line 16 those breakpoints 18.

Der aus der Sperrholzplatte 22 ragende Abschnitt des Stanzmessers 30 wird beidseits von -- aus Metall, insbesondere Leichtmetall, aus Kunststoff oder Keramik geformten -- Rinnenprofilen 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 protruding from the plywood plate 22 portion of the punch blade 30 is flanked on both sides of - made of metal, in particular light metal, plastic or ceramic - shaped channel profiles 40 of height c of about 2 mm. The width q of the channel profiles 40 here measures about 12 mm. The gutter legs 36 of the plywood panel 22 according to FIGS. 3, 6 bonded by an adhesive layer 38 delimit a channel space 42 and are curved on the inside in FIG. 2, 3, forming a lateral undercut area 44, respectively. to provide the cross-sectionally shaped first region 46 of a rubber profile 50 of almost rectangular cross-section of the free height h clamping stop. Whose side surfaces 47 are away from the ridge region 46 a little bit to the profile centerline M down and further downwardly curved outward, so that close to the Profile base surface 49 on both sides a kind of Fußwulst 48 arises.

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 punching process, the base surfaces 49 of the rubber profiles 50, which are guided in the pressure direction x, lie on the sheet 10 on both sides of the corresponding punching contour 16, changing the profile cross section (FIG. 4). When the cutting lines 30 penetrate into the sheet material, enormous wedging forces, which destroy the holding points 18, occur. By introducing the rubber profiles 50 on both sides of the punching blade 30 is generated by the pressure of high frictional resistance between the underside of the sheet 10 and the surface of the punching plate 24, which prevents blasting of the breakpoints 18. The cross section of the rubber profile 50 is in this case selected so that in addition act forces to the punching blade 30 out.

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 44 begrenzen. Das Gummiprofil 50a weist hier zwei zu dessen Mittellinie M einwärts geneigte Seitenflächen 47a auf.Fig. 6 indicates a gutter profile 40 a with both sides angularly inwardly bent gutter legs 36 a , whose to the ridge plate 39 of the channel profile 40 a parallel hook strips 37 define the undercut space 44. The rubber profile 50 a here has two to the center line M inwardly inclined side surfaces 47 a .

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 seated in the glued channel profiles 40 and 40 a rubber profiles 50 and 50 a are easy to remove and again traceable. Also a quick change to other - eg softer - rubber materials is possible.

Claims (14)

  1. Device for punching blanks out of a flat workpiece (10), in particular packaging blanks (12) made of cardboard or corrugated board, comprising a cutting blade mounted in a carrier plate (22) and projecting therefrom in the form of a blade or cutting line, as well as profiled strips (50, 50a) made of a material having limited flexibility flanking the cutting blade, characterised in that a channel-like section (40, 40a) made of rigid material into which the profiled strip (50, 50a) is inserted by means of one region (46) of its cross section is arranged on the carrier plate (22) parallel to the cutting blade (30) on each of its longitudinal sides.
  2. Device according to claim 1, characterised in that the profiled strip (50, 50a) is arranged positively in the rail-like channel section (40, 40a).
  3. Device according to claim 1 or claim 2, characterised in that the cross section of the profiled strip (50) is provided at least on one side face (47) with an outwardly directed bottom bead (48).
  4. Device according to claim 3, characterised in that the cutting blade (30) is flanked on either side by respective bottom beads (48) of the profiled strips (50) (Fig. 2).
  5. Device according to claim 1 or claim 2, characterised in that the side faces (47a) of the profiled strip (50a) are inclined inwardly relative to the centre line (M) thereof.
  6. Device according to one of claims 1 to 5, characterised in that the centre line (M) of the profiled strip (50, 50a) is its line of symmetry.
  7. Device according to one of claims 1 to 6, characterised in that the channel section (40, 40a) is provided on its channel legs (36, 36a) projecting from a top plate (38) with an internal undercut space (44).
  8. Device according to one of claims 1 to 7, characterised in that the inner face of the channel leg (36) has an inwardly curved cross section (Fig. 3).
  9. Device according to one of claims 1 to 7, characterised by channel legs (36a) with angular cross sections with end hook strips (37) directed towards one another (Fig. 6).
  10. Device according to one of claims 1 to 9, characterised in that the top plate (39) of the channel section (40, 40a) is secured to the preferably wooden carrier plate (22) of the die.
  11. Device according to one of claims 7 to 10, characterised in that the top plate (39) of the channel section (40, 40a) is secured to the die by means of a liquid adhesive.
  12. Device according to one of claims 7 to 10, characterised in that the top plate (39) of the channel section (40, 40a) is provided on its outside with an adhesive layer (38).
  13. Device according to claim 12, characterised in that the adhesive layer (38) is covered by a protective layer when it is not in use.
  14. Device according to one of claims 1 to 13, characterised in that the plate-like cutting blade (30) is provided at a distance from the adjacent channel legs (36, 36a) of the channel sections (40, 40a) with a cutting edge (32) directed away from the latter and the cutting edge is provided with notches arranged at a distance (i) from one another.
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 EP1567309A1 (en) 2005-08-31
EP1567309B1 true EP1567309B1 (en) 2006-05-17

Family

ID=32094886

Family Applications (1)

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

Country Status (7)

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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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DE102009009418A1 (en) 2008-02-20 2009-08-27 Franz Vossen Apparatus for punching blanks from a sheet
EP2260985A1 (en) 2009-06-09 2010-12-15 Franz Vossen Device for punching cuts from a flat object
DE202011051267U1 (en) 2011-09-12 2012-12-14 Franz Vossen Apparatus for punching blanks from a sheet piece and gutter profile

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DE102009009418A1 (en) 2008-02-20 2009-08-27 Franz Vossen Apparatus for punching blanks from a sheet
EP2260985A1 (en) 2009-06-09 2010-12-15 Franz Vossen Device for punching cuts from a flat object
DE202011051267U1 (en) 2011-09-12 2012-12-14 Franz Vossen Apparatus for punching blanks from a sheet piece and gutter profile
WO2013037757A1 (en) 2011-09-12 2013-03-21 Franz Vossen Device for punching cuts out of a planar piece, and channel profile

Also Published As

Publication number Publication date
EP1567309A1 (en) 2005-08-31
US8201482B2 (en) 2012-06-19
ATE326316T1 (en) 2006-06-15
DE20317993U1 (en) 2004-04-01
US20060112803A1 (en) 2006-06-01
WO2004045811A1 (en) 2004-06-03
DE50303400D1 (en) 2006-06-22
AU2003292053A1 (en) 2004-06-15
JP2006507139A (en) 2006-03-02

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