EP0125667A1 - Hoop-steel stamping device for carton cuts and the like - Google Patents

Hoop-steel stamping device for carton cuts and the like Download PDF

Info

Publication number
EP0125667A1
EP0125667A1 EP84105389A EP84105389A EP0125667A1 EP 0125667 A1 EP0125667 A1 EP 0125667A1 EP 84105389 A EP84105389 A EP 84105389A EP 84105389 A EP84105389 A EP 84105389A EP 0125667 A1 EP0125667 A1 EP 0125667A1
Authority
EP
European Patent Office
Prior art keywords
band steel
steel punching
hardened
intermediate plate
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.)
Withdrawn
Application number
EP84105389A
Other languages
German (de)
French (fr)
Inventor
Walter Röder
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.)
R and S STANZFORMEN GmbH
KARL STURSBERG KG
Original Assignee
R and S STANZFORMEN GmbH
KARL STURSBERG KG
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
Application filed by R and S STANZFORMEN GmbH, KARL STURSBERG KG filed Critical R and S STANZFORMEN GmbH
Publication of EP0125667A1 publication Critical patent/EP0125667A1/en
Withdrawn legal-status Critical Current

Links

Images

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
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4463—Methods and devices for rule setting, fixation, preparing cutting dies

Definitions

  • the invention relates to a band steel punching tool for blanks made of cardboard or the like, in particular folding box blanks, with at least one band steel punching knife inserted into a slot of a carrier plate and protruding therefrom with a hardened cutting edge, the back of which faces an intermediate plate and a hardened pressure plate.
  • Such steel strip tools are attached to the upper table of a punch and work against a plane-parallel counter-punching plate on the lower table of the punch.
  • the so-called strip steel punching lines have the same height, so that the material to be punched, which rests flatly on the counter-cutting plate, is cut through uniformly on all cutting edges, because otherwise the cut-outs will break free the sheet material is not possible.
  • the present invention has for its object to provide a band steel punching tool, with the help of which flawless cuts can be made without additional adjustment work, even if the band steel punching tool is used repeatedly.
  • the band steel punching tool according to the invention which initially does not yet have a height adjustment, is used for punching, the cutting edges or cutting edge areas which protrude furthest from the carrier plate first strike the material to be punched or the counter-cutting plate, as a result of which increased pressure forces occur on these cutting edges or cutting edge areas.
  • This condition which corresponds to a uniform altitude, can be brought about already during the first trial cuts without the need for special height adjustment work. The desired same altitude thus occurs automatically in the interaction of the rear cutting edges with the softer intermediate plate.
  • the punching tool according to the invention can be used repeatedly, it being only necessary to ensure that the rear cutting edges of the band steel punching knives face new areas of the intermediate plate. This can be achieved by slightly moving the intermediate plate in the x and y directions. In addition, the intermediate plate can also be turned over, as a result of which the intermediate plate can also be used repeatedly. Even if a new intermediate plate is used each time the strip steel punching tool in question is set up again, the effort involved is low because the intermediate plate has only a small share in the total cost of the strip steel punching tool.
  • the intermediate plate Since the above-mentioned height tolerances are only a few tenths of a millimeter even when all tolerances are unfavorably added, it is sufficient if the intermediate plate is made thin and single-layered. Their thickness should be a little larger than the expected maximum tolerance sum in order to avoid cutting through the intermediate plate at the indentation points of the rear cutting edges as far as possible. Accordingly, a few tenths of a millimeter are sufficient for the thickness of the intermediate plate. Good experiences have been achieved, for example, with a 0.3 mm thick intermediate plate.
  • the intermediate plate consists of a notched impact-resistant material, the Rockwell hardness of which is approximately up to 50% of the Rockwell hardness of the hardened cutting edges of the band steel punching knife.
  • the Rockwell hardness of the hardened cutting edges of the band steel punching knives is usually about 50. Accordingly, the lower Rockwell hardness of the intermediate plate should be between 40 and 25.
  • the Rockwell hardness of the material of the intermediate plate can even be below 25, because, for example, in the case of a wedge-shaped cutting edge shape, the penetration resistance increases in accordance with the increasing surface area of the penetrating cutting edge regions.
  • the intermediate plate expediently consists of a metal which is softer than the hardness of the cutting edge. But plastics can also be used as an intermediate plate, for example polytetrafluoroethylene.
  • the rear cutting edge of the band steel punching knife can have different designs within the scope of the inventive concept. It can, for example, be identical to the front cutting edge which brings about the punching cut, as a result of which the production of the band steel punching knife is made considerably easier.
  • the arrangement can advantageously also be such that the back of the band steel punching knife is shaped by hollow grinding to form a hardened double cutting edge.
  • the back of the band steel knife can also be designed as a hardened sawtooth blade.
  • one can A cutting edge is created which is composed of short individual cutting edges arranged at a distance from one another (e.g.
  • the intermediate plate material can have a greater hardness than in the case of a continuous rear cutting edge.
  • the arrangement can be made in a band steel punching tool with an additional at least one recessed in a slot of the carrier plate less than the band steel punch knife protruding from the support plate band steel folding ruler so that the back of the band steel folding ruler is designed as a hardened cutting edge.
  • the band steel folding rulers also automatically adjust themselves to the same height after the band steel punching knives, by pressing the rear cutting edges of the band steel folding rulers more or less deeply into the intermediate plate in accordance with the existing height tolerances during the punching and folding process.
  • the band steel punching tool is shown on a scale which is considerably larger than the reality, while in FIGS. 4 and 5 only the thickness of the band steel punching knife is exaggerated for clarity.
  • the band steel punching tool shown in FIG. 1 shows two band steel punching knives 1 and a band steel folding ruler 2 located between them, each inserted into slots 3 and 4 of the carrier plate 5, which is usually made of plywood.
  • the band steel punching knives 1 projecting downward from the carrier plate 5 each have a wedge-shaped, hardened surface Cutting edge 6, which is used with a counter-punching plate for punching a sheet-like material to be placed on the counter-punching plate 7, e.g. B. cardboard works together.
  • the band steel folding ruler 2 is rounded off at its outer end 8 in order to produce a fold or groove line and projects less downward than the cutting edges 6 from the carrier plate.
  • a hardened pressure plate 9 is assigned to the band steel punching tool, on which it is supported.
  • a thin single-layer intermediate plate 10 is located between the pressure plate 9 and the carrier plate 5.
  • the band steel punching knives 1 and, if present, the band steel folding rulers 2 are also formed on their backs as wedge-shaped, hardened cutting edges 11 and 12, which bear against the facing surface of the intermediate plate 10 before the first punching or embossing process.
  • the intermediate plate 10 consists of a material which has a lower hardness than the cutting edges 11, 12 facing the intermediate plate 10.
  • the cutting edges 11, 12 can penetrate into the intermediate plate 10 in order to compensate for height tolerances, as is shown in FIG.
  • the band steel punching knife 13 shown in FIG. 3 has a hollow ground groove 14 on its back, which creates a double cutting edge, the two cutting edges 15 of which are at the same height.
  • the rear cutting edge of a band steel punching knife 16 is designed as a saw tooth cutting edge 17 consisting of individual saw teeth 18.
  • the band steel punching knife 19 is also equipped with a rear sawtooth blade 20, the saw teeth 21 of which are triangular.
  • the rear cutting edges 17 and 20 of the intermediate plate lie with a considerable reduced contact surface, whereby surface pressures of considerable size occur during the automatic height compensation, which facilitate the penetration of the teeth 18 or 21 into the material of the intermediate plate 10.
  • the hardness of the intermediate plate 10 can be chosen larger than in the embodiment according to FIGS. 1 and 2, but the hardness of the intermediate plate 10 always remains below the hardness of the cutting edges 17 and 20, respectively.

Landscapes

  • 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)

Abstract

Bei einem Bandstahlstanzwerkzeug sind Bandstahlstanzmesser (1) und ggf. Bandstahlfalzlineale (2) in Schlitzen (3, 4) einer Trägerplatte (5) vorgesehen, aus welcher die Bandstahlstanzmesser und ggf. Bandstahlfalzlineale nach unten zum Zusammenarbeiten mit einer Gegenstanzplatte (7) vorstehen. Die Rücken der Bandstahlstanzmesser (1) und ggf. der Bandstahlfalzlineale (2) sind einer gehärteten Druckplatte (9) zugekehrt. Zur Erzielung einer selbsttätigen Höhenjustierung der Bandstahlstanzmesser (1) und ggf. Bandstahlfalzlineale (2) sind die Rücken der Bandstahlstanzmesser und ggf. der Bandstahlfalzlineale ebenfalls als gehärtete Schneide (11, 12) ausgebildet, wobei zwischen der Trägerplatte (5) und der Druckplatte (9) eine Zwischenplatte (10) eingelegt ist, deren Härte geringer als die ihr zugekehrten Schneiden (11, 12) der Bandstahlstanzmesser (1) und ggf. der Bandstahlfalzlineale (2) ist, so daß beim Höhenausgleich diese Schneiden in die Zwischenplatte eindringen können.In the case of a band steel punching tool, band steel punching knives (1) and, if applicable, band steel folding rulers (2) are provided in slots (3, 4) of a carrier plate (5), from which the band steel punching knives and, if applicable, band steel folding rulers protrude downwards for cooperation with a counter punching plate (7). The backs of the band steel punching knives (1) and possibly the band steel folding rulers (2) face a hardened pressure plate (9). To achieve an automatic height adjustment of the band steel punching knives (1) and possibly band steel folding rulers (2), the backs of the band steel punching knives and possibly the band steel folding rulers are also designed as hardened cutting edges (11, 12), whereby between the carrier plate (5) and the pressure plate (9 ) an intermediate plate (10) is inserted, the hardness of which is lower than the cutting edges (11, 12) facing it of the band steel punching knife (1) and possibly the band steel folding rulers (2), so that these blades can penetrate the intermediate plate during height compensation.

Description

Die Erfindung bezieht sich auf ein Bandstahlstanzwerkzeug für Zuschnitte aus Karton od. dgl., insbesondere Faltschachtelzuschnitte, mit mindestens einem in einen Schlitz einer Trägerplatte eingelassenen und mit einer gehärteten Schneide daraus vorstehenden Bandstahlstanzmesser, dessen Rücken einer Zwischenplatte und einer gehärteten Druckplatte zugekehrt ist.The invention relates to a band steel punching tool for blanks made of cardboard or the like, in particular folding box blanks, with at least one band steel punching knife inserted into a slot of a carrier plate and protruding therefrom with a hardened cutting edge, the back of which faces an intermediate plate and a hardened pressure plate.

Derartige Bandstahlwerkzeuge (EP-OS 0 017 179) werden am Obertisch einer Stanze befestigt und arbeiten gegen eine planparallel ausgerichtete Gegenstanzplatte am Untertisch der Stanze. In der Praxis kommt es darauf an, daß die aus der Trägerplatte vorstehenden Schneiden, die sog. Bandstahlstanzlinien, die gleiche Höhenlage haben, damit das der Gegenstanzplatte flächenförmig aufliegende zu stanzende Material an allen Schneiden gleichmäßig durchtrennt wird, weil sonst ein störungsfreies Ausbrechen der Zuschnitte aus dem flächenförmigen Material nicht möglich ist.Such steel strip tools (EP-OS 0 017 179) are attached to the upper table of a punch and work against a plane-parallel counter-punching plate on the lower table of the punch. In practice, it is important that the cutting edges protruding from the carrier plate, the so-called strip steel punching lines, have the same height, so that the material to be punched, which rests flatly on the counter-cutting plate, is cut through uniformly on all cutting edges, because otherwise the cut-outs will break free the sheet material is not possible.

Die Erzielung einer gleichen Höhenlage der Schneiden bei der Einrichtung der Stanzen ist ein der Fachwelt seit langem bekanntes und bisher nicht befriedigend gelöstes Problem. Zum Ausgleich der an sich unvermeidbaren Höhentoleranzen, die bis zu mehrere Zehntel Millimeter betragen können, ist es üblich, die Rücken der nicht durchtrennenden Bandstahlstanzmesser mit Ausgleichsstreifen zu hinterlegen. Diese Einrichtungsarbeiten sind jedoch sehr zeitaufwendig und müssen zudem wiederholt werden, wenn das Bandstahlwerkzeug in zeitlichen Abständen mehrfach verwendet wird, was in der Praxis bei Wiederholungsaufträgen häufig vorkommt.Achieving the same height of the cutting edges when setting up the punches is a problem which has long been known to the experts and has not been satisfactorily solved to date. To compensate for the inevitable heights tolerances, which can be up to several tenths of a millimeter, it is customary to back the backs of the non-cutting band steel punching knives with compensation strips. However, this set-up work is very time-consuming and must also be repeated if the steel strip tool is used several times at intervals, which often occurs in the case of repeat orders in practice.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Bandstahlstanzwerkzeug bereitzustellen, mit dessen Hilfe einwandfreie Schnitte ohne zusätzliche Justierarbeiten durchführbar sind, auch wenn das Bandstahlstanzwerkzeug wiederholt verwendet wird.The present invention has for its object to provide a band steel punching tool, with the help of which flawless cuts can be made without additional adjustment work, even if the band steel punching tool is used repeatedly.

Diese Aufgabe wird ausgehend von der eingangs bezeichneten Gattung dadurch gelöst, daß der Rücken des Bandstahlstanzmessers ebenfalls als gehärtete Schneide ausgebildet ist.This object is achieved on the basis of the type described in the introduction in that the back of the band steel punching knife is also designed as a hardened cutting edge.

Wird das zunächst noch keine Höhenjustierung aufweisende erfindungsgemäße Bandstahlstanzwerkzeug zum Stanzen verwendet, so treffen die am weitesten aus der Trägerplatte vorstehenden Schneiden bzw. Schneidenbereiche zuerst auf das zu stanzende Material bzw. auf die Gegenstanzplatte auf, wodurch an diesen Schneiden bzw. Schneidenbereichen erhöhte Druckkräfte auftreten. Diese führen dazu, daß sich die betreffenden Bandstahlstanzmesser geringfügig in ihren Schlitzen in der Trägerplatte in der Höhenrichtung verlagern, wobei die rückwärtigen Schneiden der Bandstahlstanzmesser in die weichere Zwischenplatte eingedrückt werden, bis im weiteren Ablauf der Stanzbewegung alle Bandstahlstanzlinien gleichmäßig belastet werden. Dieser einer gleichmäßigen Höhenlage entsprechende Zustand läßt sich bereits bei den ersten Probeschnitten herbeiführen, ohne daß dazu besondere Höhenjustierarbeiten erforderlich sind. Die angestrebte gleiche Höhenlage tritt somit im Zusammenwirken der rückwärtigen Schneiden mit der weicheren Zwischenplatte selbsttätig ein.If the band steel punching tool according to the invention, which initially does not yet have a height adjustment, is used for punching, the cutting edges or cutting edge areas which protrude furthest from the carrier plate first strike the material to be punched or the counter-cutting plate, as a result of which increased pressure forces occur on these cutting edges or cutting edge areas. This leads to the band steel punching knives in question shifting slightly in their slots in the carrier plate in the vertical direction, the rear cutting edges of the band steel punching knives being pressed into the softer intermediate plate. until all strip steel punching lines are evenly loaded in the further course of the punching movement. This condition, which corresponds to a uniform altitude, can be brought about already during the first trial cuts without the need for special height adjustment work. The desired same altitude thus occurs automatically in the interaction of the rear cutting edges with the softer intermediate plate.

Das erfindungsgemäße Stanzwerkzeug kann wiederholt verwendet werden, wobei lediglich dafür zu sorgen ist, daß den rückwärtigen Schneiden der Bandstahlstanzmesser neue Bereiche der Zwischenplatte gegenüberstehen. Dieses kann erreicht werden durch geringfügiges Verschieben der Zwischenplatte in x- und y-Richtung. Außerdem kann die Zwischenplatte auch noch gewendet werden, wodurch auch die Zwischenplatte einer Mehrfachverwendung zugeführt werden kann. Selbst wenn bei jeder erneuten Einrichtung des betreffenden Bandstahlstanzwerkzeuges eine neue Zwischenplatte verwendet wird, so ist der dadurch hervorgerufene Aufwand gering, weil die Zwischenplatte nur einen geringen Anteil an den Gesamtkosten des Bandstahlstanzwerkzeuges hat.The punching tool according to the invention can be used repeatedly, it being only necessary to ensure that the rear cutting edges of the band steel punching knives face new areas of the intermediate plate. This can be achieved by slightly moving the intermediate plate in the x and y directions. In addition, the intermediate plate can also be turned over, as a result of which the intermediate plate can also be used repeatedly. Even if a new intermediate plate is used each time the strip steel punching tool in question is set up again, the effort involved is low because the intermediate plate has only a small share in the total cost of the strip steel punching tool.

Da die erwähnten Höhentoleranzen auch bei ungünstiger Addition aller Toleranzen nur wenige Zehntel Millimeter betragen, ist es ausreichend, wenn die Zwischenplatte dünn und einschichtig ausgebildet ist. Ihre Dicke sollte um weniges größer sein als die zu erwartende maximale Toleranzsumme, um Durchtrennungen der Zwischenplatte an den Eindrückstellen der rückwärtigen Schneiden möglichst zu vermeiden. Dementsprechend reichen für die Dicke der Zwischenplatte wenige Zehntel Millimeter aus. Gute Erfahrungen wurden beispielsweise mit einer 0,3 mm dicken Zwischenplatte erzielt.Since the above-mentioned height tolerances are only a few tenths of a millimeter even when all tolerances are unfavorably added, it is sufficient if the intermediate plate is made thin and single-layered. Their thickness should be a little larger than the expected maximum tolerance sum in order to avoid cutting through the intermediate plate at the indentation points of the rear cutting edges as far as possible. Accordingly, a few tenths of a millimeter are sufficient for the thickness of the intermediate plate. Good experiences have been achieved, for example, with a 0.3 mm thick intermediate plate.

In Weiterführung des Erfindungsgedankens besteht die Zwischenplatte aus einem kerbschlagzähen Material, dessen Rockwellhärte etwa bis zu 50% der Rockwellhärte der gehärteten Schneiden des Bandstahlstanzmessers beträgt. Die Rockwellhärte der gehärteten Schneiden der Bandstahlstanzmesser beträgt üblicherweise etwa 50. Dementsprechend sollte die geringere Rockwellhärte der Zwischenplatte etwa zwischen 40 und 25 betragen.In continuation of the inventive concept, the intermediate plate consists of a notched impact-resistant material, the Rockwell hardness of which is approximately up to 50% of the Rockwell hardness of the hardened cutting edges of the band steel punching knife. The Rockwell hardness of the hardened cutting edges of the band steel punching knives is usually about 50. Accordingly, the lower Rockwell hardness of the intermediate plate should be between 40 and 25.

Bei entsprechender Ausbildung der rückwärtigen Schneide des Bandstahlmessers kann die Rockwellhärte des Materials der Zwischenplatte sogar unterhalb 25 liegen, weil beispielsweise bei einer keilförmigen Schneidenform der Eindringwiderstand entsprechend der zunehmenden Flächengröße der eindringenden Schneidenbereiche wächst.With a corresponding design of the rear cutting edge of the band steel knife, the Rockwell hardness of the material of the intermediate plate can even be below 25, because, for example, in the case of a wedge-shaped cutting edge shape, the penetration resistance increases in accordance with the increasing surface area of the penetrating cutting edge regions.

Zweckmäßig besteht die Zwischenplatte aus einem gegenüber der Härte der Schneide weicheren Metall. Aber auch Kunststoffe sind als Zwischenplatte verwendbar, beispielsweise Polytetrafluorethylen.The intermediate plate expediently consists of a metal which is softer than the hardness of the cutting edge. But plastics can also be used as an intermediate plate, for example polytetrafluoroethylene.

Die rückwärtige Schneide des Bandstahlstanzmessers kann im Rahmen des Erfindungsgedankens eine unterschiedliche Ausbildung erfahren. Sie kann beispielsweise mit der vorderen den Stanzschnitt herbeiführenden Schneide identisch sein, wodurch die Herstellung des Bandstahlstanzmessers wesentlich erleichtert ist. Die Anordnung kann mit Vorteil aber auch so getroffen sein, daß der Rücken des Bandstahlstanzmessers durch Hohlschliff zu einer gehärteten Doppelschneide ausgestaltet ist. Im Zusammenwirken mit bestimmten Materialien für die Zwischenplatte kann der Rücken des Bandstahlmessers auch als gehärtete Sägezahnschneide ausgebildet sein. Je nach Ausbildung der Sägezähne kann dabei eine Schneide entstehen, die aus kurzen, mit Abstand zueinander angeordneten Einzelschneiden zusammengesetzt ist (z. B. Rechtecksägezähne) oder im Extremfall aus einer Reihe von in gleichen Abständen angeordneten Punkten bzw. Spitzen (Dreiecksägezähne) besteht. Da die Flächenpressung bei vergleichbarer Belastung an einer derartigen Sägezahnschneide größer ist, kann der Zwischenplattenwerkstoff eine größere Härte aufweisen, als bei einer ununterbrochen durchgehenden rückwärtigen Schneide.The rear cutting edge of the band steel punching knife can have different designs within the scope of the inventive concept. It can, for example, be identical to the front cutting edge which brings about the punching cut, as a result of which the production of the band steel punching knife is made considerably easier. The arrangement can advantageously also be such that the back of the band steel punching knife is shaped by hollow grinding to form a hardened double cutting edge. In cooperation with certain materials for the intermediate plate, the back of the band steel knife can also be designed as a hardened sawtooth blade. Depending on the design of the saw teeth, one can A cutting edge is created which is composed of short individual cutting edges arranged at a distance from one another (e.g. rectangular saw teeth) or, in extreme cases, consists of a series of points or tips arranged at equal intervals (triangular saw teeth). Since the surface pressure at a comparable load on such a sawtooth cutting edge is greater, the intermediate plate material can have a greater hardness than in the case of a continuous rear cutting edge.

Im Rahmen des Erfindungsgedankens kann bei einem Bandstahlstanzwerkzeug mit zusätzlich mindestens einem in einen Schlitz der Trägerplatte eingelassenen weniger weit als das Bandstahlstanzmesser aus der Tragplatte vorstehenden Bandstahlfalzlineal die Anordnung so getroffen sein, daß auch der Rücken des Bandstahlfalzlineals als gehärtete Schneide ausgebildet ist. Bei dieser Ausgestaltung stellen sich nach den Bandstahlstanzmessern auch die Bandstahlfalzlineale selbsttätig auf eine gleiche Höhenlage ein, indem beim Stanz- und Falzvorgang die rückwärtigen Schneiden der Bandstahlfalzlineale entsprechend den vorhandenen Höhentoleranzen mehr oder weniger tief in die Zwischenplatte eingedrückt werden.Within the scope of the inventive idea, the arrangement can be made in a band steel punching tool with an additional at least one recessed in a slot of the carrier plate less than the band steel punch knife protruding from the support plate band steel folding ruler so that the back of the band steel folding ruler is designed as a hardened cutting edge. In this embodiment, the band steel folding rulers also automatically adjust themselves to the same height after the band steel punching knives, by pressing the rear cutting edges of the band steel folding rulers more or less deeply into the intermediate plate in accordance with the existing height tolerances during the punching and folding process.

Weitere Einzelheiten der Erfindung werden nachfolgend anhand der Ausführungsbeispiele darstellenden Zeichnungen näher erläutert. Darin zeigt:

  • Fig. 1 einen Teilschnitt durch ein Bandstahlstanzwerkzeug vor dem selbsttätigen Höhendifferenzausgleich,
  • Fig. 2 einen Teilschnitt durch ein Bandstahlstanzwerkzeug nach dem selbsttätigen Höhendifferenzausgleich,
  • Fig. 3 einen Schnitt durch ein Bandstahlstanzmesser mit einer von den Beispielen gemäß der Fig. 1 und 2 abweichenden Gestaltung des Messerrückens,
  • Fig. 4 einen Schnitt und eine seitliche Teilansicht eines anderen Ausführungsbeispiels des Bandstahlstanzmessers und
  • Fig. 5 ebenfalls einen Schnitt und eine seitliche Teilansicht eines weiteren Ausführungsbeispiels eines Bandstahlstanzmessers.
Further details of the invention are explained in more detail below with reference to the drawings illustrating the exemplary embodiments. It shows:
  • 1 is a partial section through a band steel punching tool before the automatic height difference compensation,
  • 2 shows a partial section through a band steel punching tool after the automatic height difference compensation,
  • 3 shows a section through a band steel punching knife with a design of the knife back that differs from the examples according to FIGS. 1 and 2,
  • Fig. 4 is a section and a partial side view of another embodiment of the band steel punch knife and
  • 5 also shows a section and a partial side view of a further exemplary embodiment of a band steel punching knife.

In den Fig. 1 bis 3 ist das Bandstahlstanzwerkzeug in einem gegenüber der Wirklichkeit erheblich größeren Maßstab dargestellt, während in den Fig. 4 und 5 lediglich die Dicke der Bandstahlstanzmesser zur Verdeutlichung übertrieben groß gezeichnet ist.1 to 3, the band steel punching tool is shown on a scale which is considerably larger than the reality, while in FIGS. 4 and 5 only the thickness of the band steel punching knife is exaggerated for clarity.

Das aus Fig. 1 ersichtliche Bandstahlstanzwerkzeug zeigt zwei Bandstahlstanzmesser 1 und ein dazwischen befindliches Bandstahlfalzlineal 2, jeweils eingelassen in Schlitze 3 bzw. 4 der üblicherweise aus Schichtholz bestehenden Trägerplatte 5. Die aus der Trägerplatte 5 nach unten vorstehenden Bandstahlstanzmesser 1 besitzen jeweils eine keilförmig zugeschliffene gehärtete Schneide 6, die mit einer Gegenstanzplatte zum Stanzen eines der Gegenstanzplatte 7 aufzulegenden flächenförmigen Materials, z. B. Karton, zusammenarbeitet.The band steel punching tool shown in FIG. 1 shows two band steel punching knives 1 and a band steel folding ruler 2 located between them, each inserted into slots 3 and 4 of the carrier plate 5, which is usually made of plywood. The band steel punching knives 1 projecting downward from the carrier plate 5 each have a wedge-shaped, hardened surface Cutting edge 6, which is used with a counter-punching plate for punching a sheet-like material to be placed on the counter-punching plate 7, e.g. B. cardboard works together.

Das Bandstahlfalzlineal 2 ist zur Erzeugung einer Falz-oder Nutlinie an seinem äußeren Ende 8 abgerundet und steht weniger weit als die Schneiden 6 aus der Trägerplatte nach unten heraus.The band steel folding ruler 2 is rounded off at its outer end 8 in order to produce a fold or groove line and projects less downward than the cutting edges 6 from the carrier plate.

Dem Bandstahlstanzwerkzeug ist eine gehärtete Druckplatte 9 zugeordnet, an welcher es sich abstützt. Zwischen der Druckplatte 9 und der Trägerplatte 5 befindet sich eine dünne einschichtige Zwischenplatte 10.A hardened pressure plate 9 is assigned to the band steel punching tool, on which it is supported. A thin single-layer intermediate plate 10 is located between the pressure plate 9 and the carrier plate 5.

Die Bandstahlstanzmesser 1 und, falls vorhanden, die Bandstahlfalzlineale 2 sind an ihrem Rücken ebenfalls als keilförmig geschliffene gehärtete Schneiden 11 bzw. 12 ausgebildet, die vor dem ersten Stanz- bzw. Prägevorgang an der zugekehrten Fläche der Zwischenplatte 10 anliegen. Die Zwischenplatte 10 besteht aus einem Werkstoff, der eine geringere Härte besitzt, als die der Zwischenplatte 10 zugekehrten Schneiden 11, 12.The band steel punching knives 1 and, if present, the band steel folding rulers 2 are also formed on their backs as wedge-shaped, hardened cutting edges 11 and 12, which bear against the facing surface of the intermediate plate 10 before the first punching or embossing process. The intermediate plate 10 consists of a material which has a lower hardness than the cutting edges 11, 12 facing the intermediate plate 10.

Aufgrund dieser Härtedifferenz können die Schneiden 11, 12 zum Ausgleich von Höhentoleranzen in die Zwischenplatte 10 eindringen, wie das in Fig. 2 am Beispiel der Schneide 11 eines Bandstahlstanzmessers 1 dargestellt ist.Because of this difference in hardness, the cutting edges 11, 12 can penetrate into the intermediate plate 10 in order to compensate for height tolerances, as is shown in FIG.

Das in Fig. 3 gezeigte Bandstahlstanzmesser 13 besitzt an seinem Rücken eine Hohlschliffnute 14, wodurch eine Doppelschneide entsteht, deren beiden Schneiden 15 sich in gleicher Höhe befinden.The band steel punching knife 13 shown in FIG. 3 has a hollow ground groove 14 on its back, which creates a double cutting edge, the two cutting edges 15 of which are at the same height.

Bei dem Ausführungsbeispiel gemäß Fig. 4 ist die rückwärtige Schneide eines Bandstahlstanzmessers 16 als Sägezahnschneide 17 bestehend aus einzelnen Sägezähnen 18 ausgebildet. Beim Ausführungsbeispiel gemäß Fig. 5 ist das Bandstahlstanzmesser 19 ebenfalls mit einer rückwärtigen Sägezahnschneide 20 ausgerüstet, deren Sägezähne 21 dreieckförmig gestaltet sind. Bei beiden Ausführungsbeispielen entsprechend den Fig. 4 und 5 liegen die rückwärtigen Schneiden 17 bzw. 20 der Zwischenplatte mit einer erheblich verringerten Auflagefläche an, wodurch beim selbsttätigen Höhenausgleich Flächenpressungen erheblicher Größe auftreten, die das Eindringen der Zähne 18 bzw. 21 in das Material der Zwischenplatte 10 erleichtern. Hierbei kann die Härte der Zwischenplatte 10 größer gewählt werden als bei dem Ausführungsbeispiel gemäß der Fig. 1 und 2, wobei jedoch die Härte der Zwischenplatte 10 stets unterhalb der Härte der Schneiden 17 bzw. 20 bleibt.In the exemplary embodiment according to FIG. 4, the rear cutting edge of a band steel punching knife 16 is designed as a saw tooth cutting edge 17 consisting of individual saw teeth 18. In the exemplary embodiment according to FIG. 5, the band steel punching knife 19 is also equipped with a rear sawtooth blade 20, the saw teeth 21 of which are triangular. In both embodiments according to FIGS. 4 and 5, the rear cutting edges 17 and 20 of the intermediate plate lie with a considerable reduced contact surface, whereby surface pressures of considerable size occur during the automatic height compensation, which facilitate the penetration of the teeth 18 or 21 into the material of the intermediate plate 10. The hardness of the intermediate plate 10 can be chosen larger than in the embodiment according to FIGS. 1 and 2, but the hardness of the intermediate plate 10 always remains below the hardness of the cutting edges 17 and 20, respectively.

Claims (7)

1. Bandstahlstanzwerkzeug für Zuschnitte aus Karton od. dgl., insbesondere Faltschachtelzuschnitte, mit mindestens einem in einen Schlitz einer Trägerplatte eingelassenen und mit einer gehärteten Schneide daraus vorstehenden Bandstahlstanzmesser, dessen Rücken einer Zwischenplatte und einer gehärteten Druckplatte zugekehrt ist, dadurch gekennzeichnet, daß der Rücken des Bandstahlstanzmessers (1) ebenfalls als gehärtete Schneide (11) ausgebildet ist.1. band steel punching tool for blanks from cardboard or the like, in particular folding box blanks, with at least one band steel punching knife inserted into a slot of a carrier plate and protruding therefrom with a hardened cutting edge, the back of which faces an intermediate plate and a hardened pressure plate, characterized in that the back of the band steel punching knife (1) is also designed as a hardened cutting edge (11). 2. Bandstahlstanzwerkzeug nach Anspruch 1, dadurch gekennzeichnet, daß die Zwischenplatte (10) aus einem kerbschlagzähen Material besteht, dessen Rockwellhärte etwa bis zu 50 % der Rockwellhärte der gehärteten Schneiden (6, 11) des Bandstahlstanzmessers (1) beträgt.2. band steel punching tool according to claim 1, characterized in that the intermediate plate (10) consists of a notched impact material whose Rockwell hardness is up to about 50% of the Rockwell hardness of the hardened cutting edges (6, 11) of the band steel punching knife (1). 3. Bandstahlstanzwerkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Zwischenplatte (10) aus einem gegenüber der Härte der Schneide (11) weicheren Metall besteht.3. Steel strip punching tool according to claim 1 or 2, characterized in that the intermediate plate (10) consists of a metal which is softer than the hardness of the cutting edge (11). 4. Bandstahlstanzwerkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Zwischenplatte aus Polytetrafluorethylen besteht.4. steel strip punching tool according to claim 1 or 2, characterized in that the intermediate plate consists of polytetrafluoroethylene. 5. Bandstahlstanzwerkzeug nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Rücken des Bandstahlstanzmessers (13) durch Hohlschliff (14) zu einer gehärteten Doppelschneide (15) ausgestaltet ist.5. band steel punching tool according to one of claims 1 to 4, characterized in that the back of the band steel punching knife (13) is designed by hollow grinding (14) to form a hardened double cutting edge (15). 6. Bandstahlstanzwerkzeug nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Rücken des Bandstahlstanzmessers (T6, 19) als gehärtete Sägezahnschneide (17, 20) ausgebildet ist.6. band steel punching tool according to one of claims 1 to 4, characterized in that the back of the band steel punching knife (T6, 19) is designed as a hardened sawtooth blade (17, 20). 7. Bandstahlstanzwerkzeug nach einem der Ansprüche 1 bis 6, mit zusätzlich mindestens einem in einen Schlitz der Trägerplatte eingelassenen weniger weit als das Bandstahlstanzmesser aus der Trägerplatte vorstehenden Bandstahlfalzlineal, dadurch gekennzeichnet, daß auch der Rücken des Bandstahlfalzlineals (2) als gehärtete Schneide (12) ausgebildet ist.7. band steel punching tool according to one of claims 1 to 6, with additionally at least one recessed in a slot of the carrier plate less than the band steel punching knife protruding from the carrier plate band steel folding ruler, characterized in that the back of the band steel folding ruler (2) as a hardened cutting edge (12) is trained.
EP84105389A 1983-05-16 1984-05-12 Hoop-steel stamping device for carton cuts and the like Withdrawn EP0125667A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3317777A DE3317777C1 (en) 1983-05-16 1983-05-16 Steel band punching tool for cuts from cardboard or the like.
DE3317777 1983-05-16

Publications (1)

Publication Number Publication Date
EP0125667A1 true EP0125667A1 (en) 1984-11-21

Family

ID=6199089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105389A Withdrawn EP0125667A1 (en) 1983-05-16 1984-05-12 Hoop-steel stamping device for carton cuts and the like

Country Status (3)

Country Link
US (1) US4568323A (en)
EP (1) EP0125667A1 (en)
DE (1) DE3317777C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798086A1 (en) * 1996-03-26 1997-10-01 Perivo B.V. Method for adjusting cutting dies, compensating sheet used to this end and die cutting machine equipped with such a compensating sheet
DE102011014858A1 (en) 2010-04-20 2011-10-20 Heidelberger Druckmaschinen Ag Punching and/or embossing station for flat bed-sheet punching and/or -coining machines for e.g. punching paper sheet to pack product, has thin adjusting sheet held between punching and additional plates and comprising tissue paper

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3701603A1 (en) * 1987-01-21 1988-08-04 Jagenberg Ag Flat-bed sheet-punching machine, especially for producing paper or cardboard blanks
DE3831393A1 (en) * 1988-09-15 1990-03-22 Wolfgang Prof Dr Ing Grebe Support plate
US5370028A (en) * 1989-08-31 1994-12-06 Karl Marbach Gmbh & Co. Strip steel punching and indenting tool
DE3928916C1 (en) * 1989-08-31 1991-01-24 Karl Marbach Gmbh & Co, 7100 Heilbronn, De
DE9012088U1 (en) * 1990-08-03 1990-10-31 Papierwerk Landshut Mittler GmbH & Co., 8300 Landshut Counter device for cutting die
DE4327197C2 (en) * 1993-08-13 2002-08-01 Dixie Union Verpackungen Gmbh Device for cutting foils
DE4443613C1 (en) * 1994-12-07 1996-04-25 Wolfgang Prof Dr Ing Grebe Punch cutter for punching paper, cardboard, plastics foil, leather, rubber etc.
DE19613984A1 (en) * 1996-04-09 1997-10-16 Marbach Gmbh Karl Bending method and device for height adjustment of a steel strip punching line with a cutting-side cutting edge for a steel strip punching and creasing tool
US5943935A (en) 1997-03-03 1999-08-31 Atlas Die, Inc. Lightweight dimensionally stable steel rule die
EP1106523B1 (en) * 1998-06-17 2004-08-04 Fuji Seal Inc. Sheet and blade for shaping sheet bent portion
DE20201466U1 (en) 2002-01-31 2002-04-04 Essmann + Schaefer GmbH + Co. KG, 42369 Wuppertal Perforating line
US7160237B2 (en) * 2002-03-18 2007-01-09 Tadashi Hashimoto Plastic sheet with bending ruled line, and ruled line blade for plastic sheet
DE202007010287U1 (en) * 2007-07-20 2008-12-04 Essmann + Schaefer Gmbh + Co. Kg Cutting and scoring tool
DE102008016640B4 (en) 2008-04-01 2016-06-02 Böhler-Uddeholm Precision Strip GmbH & Co. KG Cutting lines for cutting flat materials
AT508551B1 (en) * 2010-01-26 2011-02-15 Boehler Uddeholm Prec Strip Gmbh PUNCHING TOOL
SE534677C2 (en) * 2010-03-23 2011-11-15 Sandvik Intellectual Property Steel Town Knife
CN104290355B (en) * 2014-08-12 2017-10-03 新协力包装制品（深圳）有限公司 The indentation line line ball cutter and impression cable architecture of packing box
FR3044582A1 (en) * 2015-12-07 2017-06-09 Alain Keribin CUTTING FORM OF A MULTIFUNCTION AUTOBLOCABLE AUTOBLOCABLE BOX AND THIS BOX
CN109664370B (en) * 2018-11-29 2021-11-05 合肥洁诺无纺布制品有限公司 But facial mask production is with cutting extrusion equipment that multi-angle was adjusted

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1366757A (en) * 1973-07-10 1974-09-11 Coxhead A Cutting presses for manufacturing carton blanks and the like
EP0017179A1 (en) * 1979-04-02 1980-10-15 BASF Aktiengesellschaft Process and means (plastic plate) for adjusting rule dies

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552353A (en) * 1946-10-25 1951-05-08 Robert Gair Co Inc Cutting die
US2589022A (en) * 1948-06-21 1952-03-11 Robert Gair Co Inc Apparatus and method for making plastic folding containers
US2586744A (en) * 1949-06-29 1952-02-19 Robert Gair Co Inc Apparatus for cutting and scoring blanks
US3590695A (en) * 1968-04-04 1971-07-06 Jiffy Mfg Co Sheet perforating and joining system
US4399935A (en) * 1981-02-11 1983-08-23 Nelder Barbara L Carton construction and method of making a cutting edge therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1366757A (en) * 1973-07-10 1974-09-11 Coxhead A Cutting presses for manufacturing carton blanks and the like
EP0017179A1 (en) * 1979-04-02 1980-10-15 BASF Aktiengesellschaft Process and means (plastic plate) for adjusting rule dies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798086A1 (en) * 1996-03-26 1997-10-01 Perivo B.V. Method for adjusting cutting dies, compensating sheet used to this end and die cutting machine equipped with such a compensating sheet
DE102011014858A1 (en) 2010-04-20 2011-10-20 Heidelberger Druckmaschinen Ag Punching and/or embossing station for flat bed-sheet punching and/or -coining machines for e.g. punching paper sheet to pack product, has thin adjusting sheet held between punching and additional plates and comprising tissue paper

Also Published As

Publication number Publication date
DE3317777C1 (en) 1984-09-13
US4568323A (en) 1986-02-04

Similar Documents

Publication Publication Date Title
DE3317777C1 (en) Steel band punching tool for cuts from cardboard or the like.
DE19738635C2 (en) Process for the production of exact cut surfaces
DE3623035C1 (en) Method and device for producing a punch having a sharp cutting edge
DE1918780C2 (en) Method and device for fine blanking of sheet metal workpieces
DE102020203752B4 (en) PUNCHING TOOL
DE3135980C1 (en) Strip steel punching tool with at least one strip-shaped punching blade having a cutting edge
DE2848554C2 (en) Punching tool
DE1452590C3 (en) Process for making dry shaving foils
DE3107645C2 (en) Method and apparatus for producing plates for collector batteries
EP0546392B1 (en) Cutting blade and apparatus therewith
DE68907760T2 (en) Punch knife.
DE4428185A1 (en) Device for making tear perforations
DE3135021A1 (en) Device for punching out blanks made of cardboard, paperboard and the like
DE2708739C3 (en) Steel strip knives for wood cutting machines
DE2221479B2 (en)
DE4010871C2 (en)
DE3433020C2 (en)
DE2752717A1 (en) Stamping tool for cutting cardboard carton sheets - has right angled joint between cutting edges to avoid overhang of brittle edge
EP0310693A1 (en) Method for making cutting blades
AT405146B (en) PUNCHING TOOL FOR SHEET PARTS
DE4003918C1 (en) Mfg. stamping or punch part from metal strip - shearing edges into slots and simultaneously lifting both sides to heap-up material
DE20314293U1 (en) Method for stamping shapes from card or film has the card clamped between a thrust plate and the cutter, with grooves in the thrust plate forming bridges between the stamped shapes and the card
CH429412A (en) Form for cutting and folding paper, cardboard, cardboard and the like.
DE1102997B (en) Grating and process for its manufacture
DE1101104B (en) Process for the production of a cutting element that acts like a file

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19850509

17Q First examination report despatched

Effective date: 19860515

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19860922

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ROEDER, WALTER