EP0482111B1 - Strip steel stamping and grooving tool and process for setting it - Google Patents

Strip steel stamping and grooving tool and process for setting it Download PDF

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Publication number
EP0482111B1
EP0482111B1 EP90912766A EP90912766A EP0482111B1 EP 0482111 B1 EP0482111 B1 EP 0482111B1 EP 90912766 A EP90912766 A EP 90912766A EP 90912766 A EP90912766 A EP 90912766A EP 0482111 B1 EP0482111 B1 EP 0482111B1
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EP
European Patent Office
Prior art keywords
plate
grooving
thickness
punching
stamping
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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
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EP90912766A
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German (de)
French (fr)
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EP0482111A1 (en
Inventor
Wolfgang Grebe
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Karl Marbach GmbH and Co KG
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Karl Marbach GmbH and Co KG
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Publication of EP0482111A1 publication Critical patent/EP0482111A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—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
    • B26F2001/4409—Cutters therefor; Dies therefor having die balancing or compensating means
    • 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
    • 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
    • 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
    • B31B50/22—Notching; Trimming edges of flaps
    • 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
    • B31B50/25—Surface scoring
    • B31B50/252—Surface scoring using presses or dies

Definitions

  • the invention relates to a band steel punching and creasing tool for the arrangement between a pressure plate and a counter-punching plate of a punching machine with a carrier plate, in which slots are provided over its thickness, with knives and / or creasing lines made of band steel arranged in the slots and hardened with their Cutting or their creasing ends protrude from the carrier plate on their side facing the counter-punching plate, with an intermediate plate made of metal arranged on the side of the carrier plate facing the pressure plate, against which the knives or creasing lines rest with their backs and with one on that of the pressure plate facing side of the intermediate plate made of metal intermediate layer.
  • the invention further relates to a method for dressing such a steel band punching and creasing tool, in which an intermediate plate carrying a metal intermediate plate is attached to the top of the carrier plate, a cardboard box is placed on the counter-punching plate and during dressing the carrier plate by means of the pressure plate so far in the direction the counter punch plate is moved until the All knives touch the counter-punching plate or the crease lines sit on the cardboard while their backs are supported on the intermediate plate.
  • the backs of the knives are also designed as hardened cutting edges.
  • a plate is attached to the top of the carrier plate, which consists of a metal that is softer than the hardness of the cutting edge. If the cutting edge of a knife protruding on the underside of the carrier plate hits the counter-punching plate when the carrier plate is lowered, the hardened cutting edge of the back of the knife penetrates into the intermediate plate as the carrier plate moves further downward. For the preparation, the carrier plate is moved down until all knife edges protruding from the underside of the carrier plate are loaded evenly.
  • EP-A-0 297 324 A1 discloses a band steel punching tool of the generic type, on the support plate of which is arranged one above the other toward the pressure plate, a thin iron plate, an intermediate layer made of a paper web and a further plate on the back.
  • the thickness of the back of the knife is reduced compared to the thickness of the knife, the back sections of reduced thickness being cut over the length of the knife and being bent out to the opposite edges of the slots in the carrier plate.
  • the backs are pressed into the metal plate.
  • the invention has for its object to design the generic steel strip punching and creasing tool so that it can be prepared in a punching machine in a short time without affecting the punching performance of the punching machine.
  • the intermediate plate made of metal has a thickness of 0.8 to 1.5 mm, a 0.2-stretch limit R p0.2 of 20 to 90 N / mm2, a Tensile strength R m from 65 to 150 N / mm2 and an elongation at break ⁇ from 3% to 35%, that the intermediate layer before dressing is an elastomer plate with a hardness of 60 to 100 Shore A hardness and a thickness of 0.5 to 1.5 mm and that the intermediate layer after dressing is a correspondingly thick metal plate which is arranged instead of the elastomer plate.
  • an intermediate plate made of metal with a thickness of 0.8 to 1.5 mm, with a 0.2 proof stress R p0.2 of 20 to 90 N / mm2, one Tensile strength R m of 65 to 150 N / mm2 and an elongation at break ⁇ of 3% to 35% is used that on the intermediate plate as an intermediate layer an elastomer plate with a thickness of 0.5 to 1.5 mm and a hardness of 60 to 100 Shore A hardness is set and that after dressing the elastomer plate is replaced by a correspondingly thick metal plate.
  • the intermediate plate expediently consists of aluminum or copper.
  • the intermediate plate advantageously consists of one of the following alloys: AlMgSi, AlMg, AlCuMg, AlMn, AlMgMn.
  • the backs of the knives or the crease lines are preferably rounded.
  • the elastomer plate is replaced by a metal plate as a protective plate in order to ensure an optimal transfer of the pressure force of the pressure plate to the carrier plate.
  • the strip steel punching and creasing tool 15 shown in FIGS. 1 and 2 is arranged between a pressure plate 12 and a counter-punching plate 14 of a punching machine 10.
  • the band steel punching and creasing tool 15 consists of a horizontally arranged in the punching machine 10 support plate 16 made of wood laminate, which has vertical slots 18 for receiving punching knives 20a, 20b for punching and creasing lines 20c for creasing, which consist of band steel.
  • the slots 18 extend from the bottom to the top of the carrier plate 16.
  • a 1 mm thick intermediate plate 26 is attached, which consists of pure aluminum 99.5 G9.
  • This material has a 0.2-elongation limit of 60 N / mm2, a tensile strength R m of 90 N / mm2 and an elongation at break ⁇ A5 of 13%.
  • a 1 mm thick elastomer plate 28 with a hardness of 85 SH (A) is attached to this intermediate plate 26.
  • the knives 20a, 20b, or the creasing lines 20c are received in the slots 18 of the carrier plate 16 such that their back 24 faces the intermediate plate 26.
  • the knives 20a, 20b and the creasing lines 20c have an essentially constant thickness except for the area of the cutting edge 22, ie they have the same thickness in the area of the back 24 as on their shaft 23. In the area of the upper corners, the back 24 is rounded .
  • the hardness of the back 24 is equal to that of the shaft.
  • the knives 20a, 20b and the creasing lines 20c are inserted into the slots 18 of the carrier plate 16 such that their backs 24, as shown in FIG. 1, on the intermediate plate 26 concerns.
  • a cardboard box 30 is arranged on the counter-punching plate 14. Then, with the punching machine 10, a few dressing strokes are carried out in order to adjust the knives 20a, 20b so that their cutting edges 22 simultaneously cut through the cardboard 30 during the punching process and, under the same pressure, touch the surface of the counter-punching plate 14, so as to local unevenness of the surface of the counter-punching plate 14, which are exaggerated in FIGS.
  • the pressure plate 12 is moved together with the band steel punching and creasing tool 15 towards the counter-punching plate 14. If the knife 20a strikes the counter-punching plate 14 with its cutting edge 22, its knife back 24 penetrates into the intermediate plate 26 during a further movement towards the counter-punching plate 14.
  • the band steel punching and creasing tool 15 is moved downward during the dressing strokes until the cutting edges 22 of all the band steel punching knives 20a, 20b touch the surface of the counter-punching tool 14 in such a way that the cardboard 30 is properly severed across the entire cut surface. This position is shown in Fig. 2.
  • the creasing lines 20c are prepared analogously, except that the lower ends of the creasing lines 20c are seated on the cardboard 30 instead of severing it.
  • the back 24 displaces the ductile material of the intermediate plate 26 in the direction of the elastomer plate 28.
  • the material can thereby escape into the elastomer plate 28, so that the sensitive knife edge 22 or the lower end of the line does not damage undergoes a plastic deformation during power transmission during height compensation.
  • the width of the back 24 and the rounding of its corners prevent the material of the intermediate plate 26 from tearing.
  • the elastomer plate 28 is replaced by an equally thick metal plate for normal operation.
  • This metal plate can be the protective sheet that is customary in such punching machines 10 or a comparable plate of a hardenable Al alloy.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Shearing Machines (AREA)
  • Basic Packing Technique (AREA)
  • Drilling And Boring (AREA)

Abstract

The strip steel stamping and grooving tool (15) arranged between a pressure plate (12) and a swage block (14) of a stamping machine (10) has a carrier plate (16) with slots (18) extending from their underside facing the swage block (14) to their upper side facing the pressure plate (12). Blades of strip steel for stamping (20a, 20b) and grooving (20c) are held in the slots (18) in such a way that their hardened cutting edges (22) project form the underside of the carrier plate (16) and their rounded rear ends (24) face an intermediate metal plate (26) arranged on the upper side of the carrier plate. In order to be able to set the strip steel stamping and grooving tool in a short time without adversely affecting the output of the stamping machine, the intermediate plate (26) is of 0.8 to 1.5 mm gauge metal with a yield strength Rp0.2? of 20 to 90 N/mm?2, a tensile strength Rm? of 65 to 150 N/mm?2 and an elongation at break $g(d) of 3 to 35 %. For setting, a 0.5 to 1.5 mm thick elastomer plate (28) with a hardness of 60 to 100 Shore A is applied to the intermediate plate (26) and replaced for normal operation by a metal plate.

Description

Die Erfindung betrifft ein Bandstahlstanz- und Rillwerkzeug für die Anordnung zwischen einer Druckplatte und einer Gegenstanzplatte einer Stanzmaschine mit einer Trägerplatte, in der über ihre Dicke durchgehende Schlitze vorgesehen sind, mit in den Schlitzen angeordneten Messern und/oder Rillinien aus Bandstahl, die mit ihrem gehärteten Schneiden bzw. ihren Rillenden aus der Trägerplatte auf ihrer der Gegenstanzplatte zugewandten Seite vorstehen, mit einer auf der der Druckplatte zugewandten Seite der Trägerplatte angeordneten Zwischenplatte aus Metall, an der die Messer bzw. der Rillinien mit ihren Rücken anliegen und mit einer auf der der Druckplatte zugewandten Seite der Zwischenplatte aus Metall angeordneten Zwischenlage.The invention relates to a band steel punching and creasing tool for the arrangement between a pressure plate and a counter-punching plate of a punching machine with a carrier plate, in which slots are provided over its thickness, with knives and / or creasing lines made of band steel arranged in the slots and hardened with their Cutting or their creasing ends protrude from the carrier plate on their side facing the counter-punching plate, with an intermediate plate made of metal arranged on the side of the carrier plate facing the pressure plate, against which the knives or creasing lines rest with their backs and with one on that of the pressure plate facing side of the intermediate plate made of metal intermediate layer.

Die Erfindung betrifft ferner ein Verfahren zum Zurichten eines solchen Bandstahlstanz- und Rillwerkzeugs, bei welchem eine eine Zwischenlage tragende Zwischenplatte aus Metall auf der Oberseite der Trägerplatte angebracht wird, ein Karton auf die Gegenstanzplatte gelegt wird und beim Zurichten die Trägerplatte mittels der Druckplatte soweit in Richtung der Gegenstanzplatte bewegt wird, bis die Schneiden aller Messer die Gegenstanzplatte berühren bzw. die Rillinien auf dem Karton aufsitzen, während sich ihre Rücken an der Zwischenplatte abstützen.The invention further relates to a method for dressing such a steel band punching and creasing tool, in which an intermediate plate carrying a metal intermediate plate is attached to the top of the carrier plate, a cardboard box is placed on the counter-punching plate and during dressing the carrier plate by means of the pressure plate so far in the direction the counter punch plate is moved until the All knives touch the counter-punching plate or the crease lines sit on the cardboard while their backs are supported on the intermediate plate.

Bei einem aus der DE-A-33 17 777 C1 bekannten Bandstahlstanzwerkzeug sind die Rücken der Messer ebenfalls als gehärtete Schneiden ausgebildet. Als Zwischenplatte wird auf der Oberseite der Trägerplatte eine Platte angebracht, die aus einem gegenüber der Härte der Schneide weicheren Metall besteht. Wenn die auf der Unterseite der Trägerplatte vorstehende Schneide eines Messers beim Herunterfahren der Trägerplatte auf die Gegenstanzplatte auftrifft, dringt die gehärtete Schneide des Rückens des Messers bei einer weiteren Abwärtsbewegung der Trägerplatte in die Zwischenplatte ein. Die Trägerplatte wird für das Zurichten so weit nach unten bewegt, bis alle aus der Unterseite der Trägerplatte vorstehenden Messerschneiden gleichmäßig belastet werden. Die Herstellung der bei dem bekannten Bandstahlstanzwerkzeug verwendeten Messer ist durch die erforderliche Bearbeitung der Messerrücken und deren Härtung sehr aufwendig und kostspielig. Außerdem verursachen die beim Stanzen auftretenden dynamischen Belastungen wegen der hohen Kerbspannungen an den Stellen der Zwischenplatte, in die die Schneiden der Messerrücken eindringen, nach einer relativ geringen Hubzahl der Stanzmaschine Ermüdungsbrüche, die ein erneutes Zurichten mit einer neuen Zwischenplatte erfordern.In a band steel punching tool known from DE-A-33 17 777 C1, the backs of the knives are also designed as hardened cutting edges. As an intermediate plate, a plate is attached to the top of the carrier plate, which consists of a metal that is softer than the hardness of the cutting edge. If the cutting edge of a knife protruding on the underside of the carrier plate hits the counter-punching plate when the carrier plate is lowered, the hardened cutting edge of the back of the knife penetrates into the intermediate plate as the carrier plate moves further downward. For the preparation, the carrier plate is moved down until all knife edges protruding from the underside of the carrier plate are loaded evenly. The manufacture of the knives used in the known band steel punching tool is very complex and costly due to the necessary processing of the knife back and its hardening. In addition, the dynamic loads that occur during punching cause fatigue fractures due to the high notch stresses at the locations of the intermediate plate into which the cutting edges of the knife backs penetrate after a relatively low number of strokes of the punching machine, which necessitate a new dressing with a new intermediate plate.

Aus der Zeitschrift "The Cutting Edge" vom Januar 1989, Seite 12, ist es bekannt, zwischen der Trägerplatte und der Druckplatte eine Platte aus einem formbaren Kunststoff anzubringen, in die die Messerrücken beim Zurichten eindringen können. Nach dem Zurichten wird die Platte herausgenommen und unter UV-Licht gehärtet. Zur Schonung der Messer wird weiter vorgeschlagen, eine Elastomerplatte zwischen der Kunststoffplatte und der Trägerplatte anzuordnen. Sowohl die gehärtete Kunststoffplatte als auch die Elastomerplatte halten den beim Stanzen auftretenden dynamischen Schwellbelastungen ebenfalls nicht stand, so daß auch hier Ermüdungsbrüche auftreten, die eine neue Elastomer- und eine neue Zwischenplatte sowie ein erneutes Zurichten erfordern.From the magazine "The Cutting Edge" from January 1989, page 12, it is known to attach a plate made of a moldable plastic between the carrier plate and the pressure plate, into which the back of the knife can penetrate during dressing. After trimming, the plate is removed and hardened under UV light. To protect the Knife is also proposed to arrange an elastomer plate between the plastic plate and the carrier plate. Both the hardened plastic plate and the elastomer plate also do not withstand the dynamic swelling loads occurring during punching, so that fatigue fractures also occur here, which require a new elastomer and a new intermediate plate and a new dressing.

Aus der EP-A-0 297 324 A1 ist ein gattungsgemäßes Bandstahlstanzwerkzeug bekannt, auf dessen Trägerplatte zur Druckplatte hin übereinander eine dünne Eisenplatte, eine Zwischenlage aus einer Papierbahn und eine weitere rückseitige Platte angeordnet sind. Die Dicke der Messerrücken ist gegenüber der Messerstärke verringert, wobei die in der Dicke reduzierten Rückenabschnitte über der Messerlänge eingeschnitten und zu den gegenüberliegenden Rändern der Schlitze in der Trägerplatte ausgebogen sind. Beim Zurichten drücken sich dabei die Rücken in die Metallplatte ein. Die bei dieser bekannten Anordnung auftretenden Nachteile entsprechen im wesentlichen denen, wie sie anhand der DE-A-33 17 777 C1 beschrieben sind.EP-A-0 297 324 A1 discloses a band steel punching tool of the generic type, on the support plate of which is arranged one above the other toward the pressure plate, a thin iron plate, an intermediate layer made of a paper web and a further plate on the back. The thickness of the back of the knife is reduced compared to the thickness of the knife, the back sections of reduced thickness being cut over the length of the knife and being bent out to the opposite edges of the slots in the carrier plate. When dressing, the backs are pressed into the metal plate. The disadvantages occurring with this known arrangement correspond essentially to those described with reference to DE-A-33 17 777 C1.

Der Erfindung liegt die Aufgabe zugrunde, das gattungsgemäße Bandstahlstanz- und Rillwerkzeug so auszubilden, daß es in einer Stanzmaschine in kurzer Zeit zugerichtet werden kann, ohne die Stanzleistung der Stanzmaschine zu beeinträchtigen.The invention has for its object to design the generic steel strip punching and creasing tool so that it can be prepared in a punching machine in a short time without affecting the punching performance of the punching machine.

Diese Aufgabe wird ausgehend von dem gattungsgemäßen Bandstahlstanz- und Rillwerkzeug dadurch gelöst, daß die Zwischenplatte aus Metall eine Dicke von 0,8 bis 1,5 mm, eine 0,2-Dehnungsgrenze Rp0,2 von 20 bis 90 N/mm², eine Zugfestigkeit Rm von 65 bis 150 N/mm² und eine Bruchdehnung δ von 3% bis 35% hat, daß die Zwischenlage vor dem Zurichten eine Elastomerplatte mit einer Härte von 60 bis 100 Shore A Härten und einer Dicke von 0,5 bis 1,5 mm ist und daß die Zwischenlage nach dem Zurichten eine entsprechend dicke Metallplatte ist, die anstelle der Elastomerplatte angeordnet ist.This object is achieved on the basis of the generic steel strip punching and creasing tool in that the intermediate plate made of metal has a thickness of 0.8 to 1.5 mm, a 0.2-stretch limit R p0.2 of 20 to 90 N / mm², a Tensile strength R m from 65 to 150 N / mm² and an elongation at break δ from 3% to 35%, that the intermediate layer before dressing is an elastomer plate with a hardness of 60 to 100 Shore A hardness and a thickness of 0.5 to 1.5 mm and that the intermediate layer after dressing is a correspondingly thick metal plate which is arranged instead of the elastomer plate.

Ausgehend von dem gattungsgemäßen Verfahren wird die genannte Aufgabe dadurch gelöst, daß eine Zwischenplatte aus Metall mit einer Dicke von 0,8 bis 1,5 mm, mit einer 0,2-Dehnungsgrenze Rp0,2 von 20 bis 90 N/mm², einer Zugfestigkeit Rm von 65 bis 150 N/mm² und einer Bruchdehnung δ von 3% bis 35% verwendet wird, daß auf die Zwischenplatte als Zwischenlage eine Elastomerplatte mit einer Dicke von 0,5 bis 1,5mm und einer Härte von 60 bis 100 Shore A Härten gelegt wird und daß nach dem Zurichten die Elastomerplatte durch eine entsprechend dicke Metallplatte ausgetauscht wird.Starting from the generic method, the above object is achieved in that an intermediate plate made of metal with a thickness of 0.8 to 1.5 mm, with a 0.2 proof stress R p0.2 of 20 to 90 N / mm², one Tensile strength R m of 65 to 150 N / mm² and an elongation at break δ of 3% to 35% is used that on the intermediate plate as an intermediate layer an elastomer plate with a thickness of 0.5 to 1.5 mm and a hardness of 60 to 100 Shore A hardness is set and that after dressing the elastomer plate is replaced by a correspondingly thick metal plate.

Zweckmäßigerweise besteht die Zwischenplatte aus Aluminium oder Kupfer.The intermediate plate expediently consists of aluminum or copper.

Vorteilhafterweise besteht die Zwischenplatte aus einer der folgenden Legierungen: AlMgSi, AlMg, AlCuMg, AlMn, AlMgMn.The intermediate plate advantageously consists of one of the following alloys: AlMgSi, AlMg, AlCuMg, AlMn, AlMgMn.

Vorzugsweise sind die Rücken der Messer bzw. der Rillinien abgerundet.The backs of the knives or the crease lines are preferably rounded.

Die Verwendung einer duktilen (gut dehn- und streckbaren) Zwischenplatte sowie die Anbringung der Elastomerplatte (Zwischenlage) auf dieser ermöglichen es, daß die Rücken der Messer und der Rillinien durch den nach dem Auftreffen der Schneiden bzw. der unteren Linienenden auf die Gegenstanzplatte ausgeübten Druck in die Zwischenplatte eindringen können, ohne daß dabei die Messerschneiden oder unteren Linienenden eine Beschädigung infolge plastischer Verformung erfahren und ohne eine Kerbwirkung zu verursachen, da der Werkstoff der Zwischenplatte auf der dem Rücken gegenüberliegenden Seite in die Elastomerplatte ausweichen kann. Es können Standardmesser und Rillinien verwendet werden, deren Rücken so breit und so hart sind wie ihr Schaft. Die Elastomerplatte wird nach dem Zurichten durch eine Metallplatte als Schonblech ersetzt, um eine optimale Übertragung der Druckkraft der Druckplatte auf die Trägerplatte zu gewährleisten. Mit dem erfindungsgemäßen Bandstahlstanz- und Rillwerkzeug ist nach der erfindungsgemäßen Zurichtung die Ausführung einer hohen Anzahl von Stanzhüben möglich, ohne daß Ermüdungsbrüche in der Zwischenplatte auftreten,weil die Messer und Rillinien in der zuvor gegen die weichelastische Unterlage geprägte Nut mit ihrem gesamten Rücken satt aufsitzen.The use of a ductile (easily stretchable and stretchable) intermediate plate and the attachment of the elastomer plate (intermediate layer) on it make it possible for the back of the knives and the creasing lines to be applied by the pressure exerted on the counter-punching plate after the cutting edges or the lower line ends hit penetrate the intermediate plate can, without the knife edges or lower line ends being damaged as a result of plastic deformation and without causing a notch effect, since the material of the intermediate plate on the opposite side of the spine can escape into the elastomer plate. Standard knives and crease lines can be used, the back of which is as wide and as hard as the shaft. After preparation, the elastomer plate is replaced by a metal plate as a protective plate in order to ensure an optimal transfer of the pressure force of the pressure plate to the carrier plate. With the band steel punching and creasing tool according to the invention, a large number of punching strokes can be carried out after the dressing according to the invention without fatigue fractures occurring in the intermediate plate because the knives and creasing lines sit snugly with their entire backs in the groove previously embossed against the soft elastic base.

Durch die Abrundung der Rücken nach Anspruch 4 werden Kerbspannungen in den Ecken der durch die eingedrungenen Rücken verformten duktilen Zwischenplatte und somit Ermüdungsbrüche aufgrund dynamischer Schwellbelastungen verhindert.By rounding the back according to claim 4, notch stresses in the corners of the ductile intermediate plate deformed by the penetrated back and thus fatigue fractures due to dynamic swell loads are prevented.

Anhand von Zeichnungen wird ein Ausführungsbeispiel der Erfindung näher erläutert. Es zeigt

Fig. 1
einen Teilschnitt durch ein Bandstahlstanz- und Rillwerkzeug einer Stanzmaschine in einer ersten Zurichtstellung; und
Fig. 2
das Bandstahlstanz- und Rillwerkzeug von Fig. 1 in einer zweiten Zurichtstellung.
An exemplary embodiment of the invention is explained in more detail with reference to drawings. It shows
Fig. 1
a partial section through a band steel punching and creasing tool of a punching machine in a first preparation; and
Fig. 2
the band steel punching and creasing tool of Fig. 1 in a second preparation.

Das in den Figuren 1 und 2 gezeigte Bandstahlstanz- und Rillwerkzeug 15 ist zwischen einer Druckplatte 12 und einer Gegenstanzplatte 14 einer Stanzmaschine 10 angeordnet. Das Bandstahlstanz- und Rillwerkzeug 15 besteht aus einer horizontal in der Stanzmaschine 10 angeordneten Trägerplatte 16 aus Holzlaminat, die vertikale Schlitze 18 zur Aufnahme von Stanzmessern 20a, 20b zum Stanzen und Rilllinien 20c zum Rillen aufweist, die aus Bandstahl bestehen. Die Schlitze 18 erstrecken sich von der Unterseite bis zur Oberseite der Trägerplatte 16. Auf der Oberseite der Trägerplatte 16 ist eine 1 mm dicke Zwischenplatte 26 angebracht, die aus Reinaluminium 99,5 G9 besteht. Dieses Material weist eine 0,2-Dehnungsgrenze von 60 N/mm², eine Zugfestigkeit Rm von 90 N/mm² und eine Bruchdehnung δ A₅ von 13 % auf. Auf dieser Zwischenplatte 26 ist eine 1 mm starke Elastomerplatte 28 mit einer Härte von 85 SH(A) angebracht.The strip steel punching and creasing tool 15 shown in FIGS. 1 and 2 is arranged between a pressure plate 12 and a counter-punching plate 14 of a punching machine 10. The band steel punching and creasing tool 15 consists of a horizontally arranged in the punching machine 10 support plate 16 made of wood laminate, which has vertical slots 18 for receiving punching knives 20a, 20b for punching and creasing lines 20c for creasing, which consist of band steel. The slots 18 extend from the bottom to the top of the carrier plate 16. On the top of the carrier plate 16, a 1 mm thick intermediate plate 26 is attached, which consists of pure aluminum 99.5 G9. This material has a 0.2-elongation limit of 60 N / mm², a tensile strength R m of 90 N / mm² and an elongation at break δ A₅ of 13%. A 1 mm thick elastomer plate 28 with a hardness of 85 SH (A) is attached to this intermediate plate 26.

Die Messer 20a, 20b, bzw. die Rillinien 20c sind so in den Schlitzen 18 der Trägerplatte 16 aufgenommen, daß ihr Rücken 24 der Zwischenplatte 26 zugewandt ist. Die Schneiden 22 der Messer 20a, 20b, und das abgerundete Ende der Rillinien 20c, stehen aus der der Gegenstanzplatte 14 zugewandten Unterseite der Trägerplatte 16 heraus. Die Messer 20a, 20b und die Rillinien 20c haben bis auf den Bereich der Schneide 22 eine im wesentlichen konstante Dicke, d.h., sie haben im Bereich des Rückens 24 dieselbe Dicke wie an ihrem Schaft 23. Im Bereich der oberen Ecken ist der Rücken 24 abgerundet. Die Härte des Rückens 24 ist gleich der des Schaftes.The knives 20a, 20b, or the creasing lines 20c are received in the slots 18 of the carrier plate 16 such that their back 24 faces the intermediate plate 26. The cutting edges 22 of the knives 20a, 20b, and the rounded end of the crease lines 20c, protrude from the underside of the carrier plate 16 facing the counter-punching plate 14. The knives 20a, 20b and the creasing lines 20c have an essentially constant thickness except for the area of the cutting edge 22, ie they have the same thickness in the area of the back 24 as on their shaft 23. In the area of the upper corners, the back 24 is rounded . The hardness of the back 24 is equal to that of the shaft.

Für ein Zurichten des Bandstahlstanz- und Rillwerkzeugs werden die Messer 20a, 20b und die Rillinien 20c so in die Schlitze 18 der Trägerplatte 16 eingelassen, daß ihre Rücken 24, wie es in Fig. 1 gezeigt ist, an der Zwischenplatte 26 anliegen. Auf der Gegenstanzplatte 14 wird ein Karton 30 angeordnet. Anschließend werden mit der Stanzmaschine 10 einige Zurichthübe durchgeführt, um die Messer 20a, 20b so einzustellen, daß ihre Schneiden 22 beim Stanzen gleichzeitig den Karton 30 durchschneiden und mit gleichem Druck belastet die Oberfläche der Gegenstanzplatte 14 berühren, um so lokale Unebenheiten der Oberfläche der Gegenstanzplatte 14, die in den Figuren 1 und 2 übertrieben dargestellt sind, und druckplattenseitig zu kompensieren und Differenzen in den Messerhöhen, das Plattenspiel und eventuelle Durchbiegungen der Druckplatte 12 und der Gegenstanzplatte 14 auszugleichen. Sinngemäß gilt dies für die Rillinien 20c, die nicht schneiden, sondern den Karton 30 prägen sollen und dementsprechend auf der Kartonoberfläche aufsitzen.For the preparation of the band steel punching and creasing tool, the knives 20a, 20b and the creasing lines 20c are inserted into the slots 18 of the carrier plate 16 such that their backs 24, as shown in FIG. 1, on the intermediate plate 26 concerns. A cardboard box 30 is arranged on the counter-punching plate 14. Then, with the punching machine 10, a few dressing strokes are carried out in order to adjust the knives 20a, 20b so that their cutting edges 22 simultaneously cut through the cardboard 30 during the punching process and, under the same pressure, touch the surface of the counter-punching plate 14, so as to local unevenness of the surface of the counter-punching plate 14, which are exaggerated in FIGS. 1 and 2, and to compensate on the printing plate side and to compensate for differences in knife heights, the plate play and any deflections of the pressure plate 12 and the counter-punching plate 14. This applies analogously to the crease lines 20c, which are not intended to cut, but rather to emboss the carton 30 and accordingly sit on the carton surface.

Bei einem Zurichtehub wird die Druckplatte 12 zusammen mit dem Bandstahlstanz- und Rillwerkzeug 15 auf die Gegenstanzplatte 14 zu bewegt. Trifft nun das Messer 20a mit seiner Schneide 22 auf die Gegenstanzplatte 14 auf, dringt sein Messerrücken 24 bei einer weiteren Bewegung zur Gegenstanzplatte 14 hin in die Zwischenplatte 26 ein. Das Bandstahlstanz- und Rillwerkzeug 15 wird während der Zurichthübe so weit nach unten bewegt, bis die Schneiden 22 aller Bandstahlstanzmesser 20a, 20b die Oberfläche des Gegenstanzwerkzeugs 14 so berühren, daß der Karton 30 auf der gesamten Schnittfläche einwandfrei durchgetrennt ist. Diese Stellung ist in Fig. 2 gezeigt. Das Zurichten der Rillinien 20c erfolgt analog, nur daß die unteren Enden der Rillinien 20c auf dem Karton 30 aufsitzen, anstatt ihn zu durchtrennen.During a preparation stroke, the pressure plate 12 is moved together with the band steel punching and creasing tool 15 towards the counter-punching plate 14. If the knife 20a strikes the counter-punching plate 14 with its cutting edge 22, its knife back 24 penetrates into the intermediate plate 26 during a further movement towards the counter-punching plate 14. The band steel punching and creasing tool 15 is moved downward during the dressing strokes until the cutting edges 22 of all the band steel punching knives 20a, 20b touch the surface of the counter-punching tool 14 in such a way that the cardboard 30 is properly severed across the entire cut surface. This position is shown in Fig. 2. The creasing lines 20c are prepared analogously, except that the lower ends of the creasing lines 20c are seated on the cardboard 30 instead of severing it.

Während des Eindringens des entsprechenden Rückens 24 in die Zwischenplatte 26 verdrängt der Rücken 24 den duktilen Werkstoff der Zwischenplatte 26 in Richtung der Elastomerplatte 28. Der Werkstoff kann dabei in die Elastomerplatte 28 ausweichen, so daß die empfindliche Messerschneide 22 bzw. das untere Linienende keine Beschädigung durch eine plastische Verformung bei der Kraftübertragung während des Höhenausgleiches erfährt. Die Breite des Rückens 24 und die Abrundungen seiner Ecken verhindern, daß der Werkstoff der Zwischenplatte 26 einreißt.During the penetration of the corresponding back 24 into the intermediate plate 26, the back 24 displaces the ductile material of the intermediate plate 26 in the direction of the elastomer plate 28. The material can thereby escape into the elastomer plate 28, so that the sensitive knife edge 22 or the lower end of the line does not damage undergoes a plastic deformation during power transmission during height compensation. The width of the back 24 and the rounding of its corners prevent the material of the intermediate plate 26 from tearing.

Wenn die Messer 20a, 20b und die Rillinien 20c nach einigen Zurichtehüben auf die vorhandenen Unebenheiten eingestellt und einer gleichen Druckbelastung ausgesetzt sind, wird die Elastomerplatte 28 für den Normalbetrieb durch eine gleich dicke Metallplatte ersetzt. Diese Metallplatte kann das bei solchen Stanzmaschinen 10 übliche Schonblech sein oder aber eine vergleichbare Platte einer aushärtbaren Al-Legierung.If the knives 20a, 20b and the creasing lines 20c are adjusted to the existing unevenness after a few dressing strokes and are subjected to the same pressure load, the elastomer plate 28 is replaced by an equally thick metal plate for normal operation. This metal plate can be the protective sheet that is customary in such punching machines 10 or a comparable plate of a hardenable Al alloy.

Claims (5)

  1. Strip-steel stamping and grooving tool (15) for arrangement between a pressure plate (12) and a swage block (14) of a stamping machine (10)
    - with a carrier plate (16) provided with slots (18) extending through its thickness;
    - with strip-steel blades (20a, 20b) and/or grooving rules (20c) disposed in the slots (18) with their hardened cutting edges (22) or grooving ends projecting from the carrier plate (16) on its side facing the swage block (14);
    - with an intermediate metal plate (26) which is disposed on the side of the carrier plate (16) facing the pressure plate (2) and is in abutment with the backs (24) of the blades (20a, 20b) or of the grooving rules (20c); and
    - with an intermediate layer disposed on the side of the intermediate metal plate (26) which faces the pressure plate (12), characterized in that
    - the intermediate metal plate (26) has
       a thickness of from 0.8 to 1.5 mm,
       a yield strength Rp0.2 of from 20 to 90 N/mm²,
       a tensile strength Rm of from 65 to 150 N/mm²; and
       an elongation δ at rupture of from 3% to 35%;
    - before adjustment, the intermediate layer is an elastomer plate (28) with a Shore A hardness of from 60 to 100 and a thickness of 0.5 to 1.5 mm; and
    - after adjustment, the intermediate layer is a metal plate of corresponding thickness, which replaces the elastomer plate (28).
  2. Strip-steel stamping and grooving tool according to Claim 1, characterized in that the intermediate plate (26) is composed of aluminum or copper.
  3. Strip-steel stamping and grooving tool according to Claim 1, characterized in that the intermediate plate (26) is composed of one of the following alloys: AlMgSi, AlMg, AlCuMg, AlMn, AlMgMn.
  4. Strip-steel stamping and grooving tool according to any one of the preceding claims, characterized in that the backs (24) of the blades (20a, 20b) and/or of the grooving rules (20c) are rounded.
  5. Method of adjusting a strip-steel stamping and grooving tool (15) according to any one of Claims 1 to 4, in which
    - an intermediate metal plate (26) carrying an intermediate layer is mounted on the upper side of the carrier plate (16);
    - a card (30) is disposed on the swage block (14); and
    - during the adjustment, the carrier plate (16) is moved towards the swage block (14) by means of the pressure plate (12) until the cutting edges (22) of all of the blades (20a, 20b) contact the swage block (14), or until the grooving rules (20c) are disposed on the card (30), whilst their backs (24) bear against the intermediate plate (26), characterized in that
    - an intermediate metal plate (26) with a thickness of 0.8 to 1.5 mm, a yield strength Rp0.2 of from 20 to 90 N/mm², a tensile strength Rm of from 65 to 150 N/mm², and an elongation δ at rupture of from 3% to 35% is used;
    - an elastomer plate (28) with a thickness of from 0.5 to 1.5 mm and a Shore A hardness of from 60 to 100 is disposed on the intermediate plate (26) as an intermediate layer; and
    - after adjustment, the elastomer plate (28) is exchanged for a metal plate of corresponding thickness.
EP90912766A 1989-08-31 1990-08-30 Strip steel stamping and grooving tool and process for setting it Expired - Lifetime EP0482111B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3928916A DE3928916C1 (en) 1989-08-31 1989-08-31
DE3928916 1989-08-31
PCT/EP1990/001452 WO1991003358A1 (en) 1989-08-31 1990-08-30 Strip steel stamping and grooving tool and process for setting it

Publications (2)

Publication Number Publication Date
EP0482111A1 EP0482111A1 (en) 1992-04-29
EP0482111B1 true EP0482111B1 (en) 1994-11-23

Family

ID=6388333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90912766A Expired - Lifetime EP0482111B1 (en) 1989-08-31 1990-08-30 Strip steel stamping and grooving tool and process for setting it

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EP (1) EP0482111B1 (en)
JP (1) JPH0677920B2 (en)
AT (1) ATE114266T1 (en)
DD (1) DD297358A5 (en)
DE (1) DE3928916C1 (en)
DK (1) DK0482111T3 (en)
ES (1) ES2064757T3 (en)
WO (1) WO1991003358A1 (en)

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CN105345889A (en) * 2015-12-18 2016-02-24 深圳市汇鑫垒刀模科技有限公司 Die cutting and embossing rule die with pressure regulating function

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DE9012088U1 (en) * 1990-08-03 1990-10-31 Papierwerk Landshut Mittler GmbH & Co., 8300 Landshut Counter device for cutting die
CH687448A5 (en) * 1993-11-26 1996-12-13 Lande Wellpappen Ag Apparatus for the ribbon section of Flaechengebilden.
JPH07205342A (en) * 1994-01-26 1995-08-08 Toshinaga Urabe Paper utensil plate punching machine
DE4433604C2 (en) * 1994-09-21 1998-05-07 Koenig & Bauer Albert Ag Perforating device
DE4443613C1 (en) 1994-12-07 1996-04-25 Wolfgang Prof Dr Ing Grebe Punch cutter for punching paper, cardboard, plastics foil, leather, rubber etc.
EP0790110B1 (en) 1996-02-16 2001-06-06 Karl Marbach GmbH + Co. Cutting and creasing die for the production of creased and cut shapes
NO311560B1 (en) 1996-02-16 2001-12-10 Marbach Gmbh Karl Process for producing grooved, punched parts from a material plate
DE19610574C5 (en) * 1996-02-16 2004-11-18 Cetex Ingenieurgesellschaft für Maschinenbau mbH Process and stamping and creasing tool for the production of grooved stamped parts
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
DE29704322U1 (en) * 1997-02-26 1997-05-07 Engelke Ätz- und Stanztechnik GmbH, 31073 Delligsen Steel device for producing counter-grooves in the manufacture of cardboard
DE20116375U1 (en) * 2001-10-05 2002-11-21 Mm Packaging Trier Gmbh Punching device for the production of folding boxes and packaging blanks
JP5321807B2 (en) * 2009-01-26 2013-10-23 セイコーエプソン株式会社 Filter manufacturing method, liquid ejecting head manufacturing method, and liquid ejecting apparatus manufacturing method
DE102009013117A1 (en) 2009-03-13 2010-09-23 Karl Marbach Gmbh & Co. Kg Method for producing bending lines in a material sheet and device for carrying out the method
DE102009028003A1 (en) 2009-07-24 2011-01-27 Stafotec Stanzformtechnik Gmbh & Co. Kg Punching tool for producing blanks from e.g. foamed plastic to form package, has support plate including opening, where design and arrangement of opening correspond to design and arrangement of knife such that knife enters into opening
DE102009056169A1 (en) 2009-11-27 2011-06-01 Heidelberger Druckmaschinen Ag Method of trimming tools
DE202011104299U1 (en) * 2011-08-12 2011-11-22 Mayr-Melnhof Karton Ag Creasing and embossing tool for embossing folding grooves in foldable materials
DE102012017636A1 (en) * 2012-09-06 2013-11-07 Heidelberger Druckmaschinen Ag Method for determining the need for dressing and method for creating a finishing bow
DE202014102222U1 (en) 2014-05-13 2014-05-21 Karl Marbach Gmbh & Co. Kg Device for producing a double groove in a material sheet

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Publication number Priority date Publication date Assignee Title
CN105345889A (en) * 2015-12-18 2016-02-24 深圳市汇鑫垒刀模科技有限公司 Die cutting and embossing rule die with pressure regulating function

Also Published As

Publication number Publication date
DD297358A5 (en) 1992-01-09
ATE114266T1 (en) 1994-12-15
EP0482111A1 (en) 1992-04-29
JPH03503028A (en) 1991-07-11
JPH0677920B2 (en) 1994-10-05
ES2064757T3 (en) 1995-02-01
DK0482111T3 (en) 1994-12-27
WO1991003358A1 (en) 1991-03-21
DE3928916C1 (en) 1991-01-24

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