EP0996527B1 - Slitter with its own suspension for longitudinal cutting machines with scissors cutting - Google Patents

Slitter with its own suspension for longitudinal cutting machines with scissors cutting Download PDF

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Publication number
EP0996527B1
EP0996527B1 EP98943672A EP98943672A EP0996527B1 EP 0996527 B1 EP0996527 B1 EP 0996527B1 EP 98943672 A EP98943672 A EP 98943672A EP 98943672 A EP98943672 A EP 98943672A EP 0996527 B1 EP0996527 B1 EP 0996527B1
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EP
European Patent Office
Prior art keywords
slitter
slots
slitter according
cuts
knife
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98943672A
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German (de)
French (fr)
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EP0996527A1 (en
Inventor
Rudolf Supe-Dienes
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.)
Dienes Werke fuer Maschinenteile GmbH and Co KG
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Dienes Werke fuer Maschinenteile GmbH and Co KG
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Publication of EP0996527A1 publication Critical patent/EP0996527A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • B26D7/2621—Means for mounting the cutting member for circular cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/002—Materials or surface treatments therefor, e.g. composite materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0046—Cutting members therefor rotating continuously about an axis perpendicular to the edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0066—Cutting members therefor having shearing means, e.g. shearing blades, abutting blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D2007/2685—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member flexible mounting means

Definitions

  • the invention relates to a circular knife for a Scissors-cutting longitudinal cutting machine, the Knife blade has a central opening to hold the Has circular knife on a knife holder and on his outer circumference with a circumferential knife edge is provided.
  • a circular knife of the aforementioned type is from the DE GM 1 842 608 known, in which on the knife surface of on one side a concentric one annular bead and along this bead in the same Distances bulges after the bead opposite side are introduced.
  • This Design should be achieved that due to the incorporated recesses an inner suspension of the Knife is generated, so that the circular knife in itself is elastic. This is supposed to be an additional spring for Press the circular knife against the lower knife be made redundant.
  • the result for knives working in silhouette is now the problem that the knives with and without Applying too much force to the spring can be acted against each other, resulting in a shorter service life or early damage to the Circular knife can lead.
  • the invention is therefore the Task based on a circular knife of the aforementioned Art to provide, which also towards one greater force is insensitive and also at large force application works reliably.
  • the basic idea of the invention provides that in the area between the center opening and the knife edge of the knife blade by the material thickness of the Knife blade reaching through cuts for training from between knife edge and incisions and / or spring arms formed between the incisions are.
  • the advantage of the invention is that the Knife edge due to the through the incisions, respectively Dodge the spring arms formed laterally to the knife level and thus give in when the force is too great can.
  • the incisions and the thereby formed spring arms in the circumferential direction of the circular knife extend. You can look for alternatives Embodiments of the invention can be provided that the incisions as line-shaped separating cuts or as slit-shaped openings in the knife blade are trained; the invention also extends to a single continuous incision in both to train alternative designs.
  • the incisions are made on several circumferential lines arranged with different radii to arrange.
  • the incisions as symmetrically arranged recesses with a radial extension and with an extension in Are formed circumferential direction, wherein between the Knife edge and the recesses in the circumferential direction extending and radial between the recesses extending spring arms are arranged. It can be useful if the recesses on their the Knife edge facing the outside a larger one Have extent in the circumferential direction than at their Center opening facing inside. With such a Implementation of the invention can also be provided that the radially extending boundary edges of the Recesses directed into the interior of the recess have a curved course.
  • the Incisions are also formed as recesses
  • the incisions from two different, arranged alternately there are recesses, the first group of Recesses on their knife edge facing Outside a smaller extent in the circumferential direction has as at the center opening facing Inside and the recesses of the second group on hers a larger outside of the knife edge Have extent in the circumferential direction than at their Center opening facing the inside and the recesses in the between the recesses of the first group existing gaps are arranged.
  • the incisions formed as slots and the between spring arms formed a radial on them Center aligned course of the circular knife have and over a limited portion of the Extend the radius of the circular knife.
  • one radial slots of equal length in two each a different distance from the center opening of the circular knife having circular arrangements are, with the slits lying on the inner circle each lying between two on the outer circle Slits extend and align with those on the outer circle partially overlapping slits, with additional the radial slots arranged in a regular sequence executed with a different radial extent could be.
  • incisions as essentially radial extending slots are formed, they can Incisions also in an alternative configuration as a U-shaped extending slits formed and with radial to U-legs on the outside facing the knife edge Circular knife can be arranged.
  • the incisions are designed as U-shaped slots, wherein a first group of U-shaped slots with their open U-legs aligned to the knife edge and a second group of U-shaped slots with their open U-legs are aligned with the center opening, each having a U-leg of the U-shaped slots a group between two U-legs of the U-shaped Slots of the other group engages and the other U-leg between two U-shaped slots in the other Group is arranged.
  • the knife blade of the circular knife can consist of a band steel of commercially available design, which has a Rockwell hardness of around 40 HR C , the Rockwell hardness required for knife edges of around 60 HR c by a coating with a suitable material is ensured.
  • the knife blade 10 has one on its outer circumference horizontal knife edge 11 and a central one Center opening 12 for holding the knife blade 10 for example on the hub of a knife holder.
  • first circumferential line 13 with the radius R 1 at the center of the knife blade 10; the incisions lying on the first circumferential line 13 are designed as slot-shaped openings 14, between which material webs 19 are located.
  • the openings 14 arranged on the first circumferential line 13 continue into separating cuts 15 located on a second circumferential line 16 with the larger radius R 2 at the center of the knife blade, the outer separating cuts 15 having the same extent in the circumferential direction as the internal openings 14.
  • the separating cuts 15 end in stop holes 17.
  • FIG 2 is an embodiment of the invention shown, in which the incisions as recesses 20 are formed so that between the knife edge 11th and the recesses 20 extending in the circumferential direction Spring arms 18 are arranged, as well as between the Recesses 20 even radially extending spring arms 18.
  • the recesses 20 have a radial extension 21 of its outside facing the knife edge 11 somewhat larger extent in the circumferential direction than at their inner side facing the central opening 12.
  • FIG illustrated embodiment with two recesses different shapes alternating with each other arranged such that the recesses each alternately in the existing between them
  • Spaces are arranged.
  • the first is in detail Group of recesses 25 provided by this are defined that these on their knife edge 11th facing outside a smaller extension in Have the circumferential direction than at their central opening 12 facing inside.
  • a second group of recesses 26 are provided which of its outside facing the knife edge 11 have greater extent in the circumferential direction than at their inner side facing the center opening 12, so that these recesses 26 correspond to the second group in the spaces between those of the first group Recesses 25 fit.
  • Figures 4 to 6 show embodiments of the Invention where the incisions are considered essentially radially arranged slots are formed. So is with the embodiment shown in Figure 4 provided that each have the same length radial slots 30 in two different each Distance to the center opening 12 of the circular knife Circular arrangements 31 and 32 are arranged, the on the inner circle 31 closer to the central opening 12 Slots 30 each between two on the outer and the knife edge 11 closer circle 32 Extend slots 30, which are on the two Circles 31, 32 lying slots 30 alternately overlap. As not shown further, can be analogous to the embodiment explained in Figure 6 Slots 30 of the inner circle 31 their exit from the Take center opening 12.
  • FIG. 5 shows one Configuration of the U-shaped cuts extending slots 35, in which a first group 37 of U-shaped slots 35 is arranged, with their open U-legs 36 aligned with the knife edge 11 are a second group 38 of U-shaped slots 35 with their open U-legs 36 to the central opening 12 the circular knife is aligned; the U-shaped on both sides Slots are mutually overlapping or arranged in mutual engagement so that each a U-leg 36 of a group 37 associated U-shaped Slits 35 between two U-legs 36 of the U-shaped Slots 35 of the other group 38 engages and the other associated U-leg between two U-shaped Slots of the other group is arranged.
  • FIG. 6 shows one corresponding to FIG. 5 Arrangement in which the U-legs 36 of the first group 37 associated U-shaped slots 35 their output from the Take center opening 12 so that the scope of the Center opening the connection between the U-legs 36 the incisions belonging to the first group 37 are replaced.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Surgical Instruments (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Details Of Cutting Devices (AREA)

Abstract

The invention concerns a slitter designed for a longitudinal cutting machine operating by scissors cutting, the slitter blade having a central opening for fixing the slitter on a slitter-holder and comprising on its outer circumference a peripheral cutting edge. Said slitter is characterised in that in the blade zone (10) located between the central opening (12) and the cutting edge (11) are arranged notches (14, 15, 20, 30, 35) passing through the blade thickness to provide for suspension arms (18) formed between the cutting edge (11) and the notches (14, 15, 20, 30, 35) and/or between the notches (14, 15, 20, 30, 35).

Description

Die Erfindung betrifft ein Kreismesser für eine im Scherenschnitt arbeitende Langsschneidemaschine, wobei das Messerblatt eine Mittenöffnung zur Halterung des Kreismessers an einem Messerhalter aufweist und an seinem äußeren Umfang mit einer umlaufenden Messerschneide versehen ist.The invention relates to a circular knife for a Scissors-cutting longitudinal cutting machine, the Knife blade has a central opening to hold the Has circular knife on a knife holder and on his outer circumference with a circumferential knife edge is provided.

Ein Kreismesser der vorgenannten Art ist aus dem DE GM 1 842 608 bekannt, bei welchem auf der Messeroberfläche von der einen Seite her eine konzentrisch verlaufende ringförmige Sicke und längs dieser Sicke in gleichen Abständen Ausbuchtungen nach der der Sicke entgegengesetzten Seite eingebracht sind. Mit dieser Ausgestaltung soll erreicht sein, daß aufgrund der eingearbeiteten Vertiefungen eine innere Federung des Messers erzeugt wird, so daß das Kreismesser in sich elastisch ist. Damit soll eine zusätzliche Feder zum Andrücken des Kreismessers gegen das Untermesser überflüssig gemacht werden.A circular knife of the aforementioned type is from the DE GM 1 842 608 known, in which on the knife surface of on one side a concentric one annular bead and along this bead in the same Distances bulges after the bead opposite side are introduced. With this Design should be achieved that due to the incorporated recesses an inner suspension of the Knife is generated, so that the circular knife in itself is elastic. This is supposed to be an additional spring for Press the circular knife against the lower knife be made redundant.

Bei im Scherenschnitt arbeitenden Messern ergibt sich nun das Problem, daß die Messer mit und auch ohne Federbeaufschlagung jeweils mit einer zu großen Kraft gegeneinander beaufschlagt sein können, was zu einer geringeren Standzeit oder frühzeitigen Beschädigung des Kreismessers führen kann. Der Erfindung liegt daher die Aufgabe zugrunde, ein Kreismesser der eingangs genannten Art zur Verfügung zu stellen, welches auch gegenüber einer größeren Kraftbeaufschlagung unempfindlich ist und auch bei großer Kraftbeaufschlagung betriebssicher arbeitet.The result for knives working in silhouette is now the problem that the knives with and without Applying too much force to the spring can be acted against each other, resulting in a shorter service life or early damage to the Circular knife can lead. The invention is therefore the Task based on a circular knife of the aforementioned Art to provide, which also towards one greater force is insensitive and also at large force application works reliably.

Die Lösung dieser Aufgabe ergibt sich aus dem Hauptanspruch; vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.The solution to this problem arises from the Main claim; advantageous embodiments and Further developments of the invention are in the subclaims specified.

Die Erfindung sieht in ihrem Grundgedanken vor, daß in dem zwischen Mittenöffnung und Messerschneide gelegenen Bereich des Messerblattes durch die Materialstärke des Messerblattes hindurchreichende Einschnitte zur Ausbildung von zwischen Messerschneide und Einschnitten und/oder zwischen den Einschnitten gebildeten Federarmen ausgebildet sind.The basic idea of the invention provides that in the area between the center opening and the knife edge of the knife blade by the material thickness of the Knife blade reaching through cuts for training from between knife edge and incisions and / or spring arms formed between the incisions are.

Mit der Erfindung ist der Vorteil verbunden, daß die Messerschneide aufgrund der durch die Einschnitte jeweils gebildeten Federarme seitlich zur Messerebene ausweichen und damit bei einer zu großen Kraftbeaufschlagung nachgeben kann.The advantage of the invention is that the Knife edge due to the through the incisions, respectively Dodge the spring arms formed laterally to the knife level and thus give in when the force is too great can.

Nach einem ersten Ausführungsbeispiel der Erfindung ist vorgesehen, daß sich die Einschnitte und die dadurch gebildeten Federarme in Umfangsrichtung des Kreismessers erstrecken. Dabei kann nach alternativen Ausführungsbeispielen der Erfindung vorgesehen sein, daß die Einschnitte als linienförmige Trennschnitte oder als schlitzförmige Durchbrechungen des Messerblattes ausgebildet sind; die Erfindung erstreckt sich auch darauf, einen einzigen fortlaufenden Einschnitt in beiden alternativen Ausführungen auszubilden.According to a first embodiment of the invention provided that the incisions and the thereby formed spring arms in the circumferential direction of the circular knife extend. You can look for alternatives Embodiments of the invention can be provided that the incisions as line-shaped separating cuts or as slit-shaped openings in the knife blade are trained; the invention also extends to a single continuous incision in both to train alternative designs.

Nach einem Ausführungsbeispiel der Erfindung ist vorgesehen, daß auf einer einen gleichen Radius aufweisenden Umfangslinie eine Abfolge von mehreren Einschnitten begrenzter Länge ausgebildet ist. Mit dieser Ausbildung findet im wesentlichen eine Zweiteilung des Messerblattes im Bereich zwischen der Mittenöffnung und der Messerschneide statt, wobei die Messerschneide über die zwischen den einzelnen Einschnitten liegenden Materialstege gehalten ist.According to an embodiment of the invention provided that on an equal radius having a circumferential line a sequence of several Incisions of limited length is formed. With this Training takes place essentially in two parts Knife blade in the area between the center opening and the Knife edge instead, the knife edge over the Material webs lying between the individual incisions is held.

Es kann auch vorgesehen sein, die Einschnitte auf mehreren, mit unterschiedlichen Radien angeordneten Umfangslinien anzuordnen.It can also be provided that the incisions are made on several circumferential lines arranged with different radii to arrange.

Soweit die Einschnitte auf mehreren Umfangslinien angeordnet sind, kann vorgesehen sein, daß die auf den mit unterschiedlichen Radien verlaufenden Umfangslinien liegenden Einschnitte begrenzter Länge mit einem gegenseitigen Versatz zueinander angeordnet sind.So much for the incisions on several circumferential lines are arranged, it can be provided that with the different circumferential lines lying incisions of limited length with a mutual offset are arranged to each other.

Es kann weiter vorgesehen sein, daß auf einer ersten Umfangslinie angeordnete, "getrennte Einschnitte zu einer zweiten, mit unterschiedlichem Radius angeordneten Umfangslinie weitergeführt und auf der zweiten Umfangslinie mit einer den auf der ersten Umfangslinie benachbart abfolgenden Einschnitt überlappenden Erstreckung fortgesetzt sind, wobei ein Einschnitt nicht nur über zwei Umfangslinien, sondern alternativ auch über mehrere mit unterschiedlichen Radien angeordnete Umfangslinien fortgeführt sein kann.It can further be provided that on a first Circumferential, "separate incisions to a second, arranged with different radius Circumference continued and on the second circumference with one adjacent to that on the first circumferential line sequential incision overlapping extension are continued, with an incision not just over two Circumferential lines, but alternatively also with several circumferential lines arranged at different radii can be continued.

In einer alternativen Ausführungsform ist vorgesehen, daß die Einschnitte als symmetrisch angeordnete Ausnehmungen mit einer radialen Erstreckung und mit einer Erstreckung in Umfangsrichtung ausgebildet sind, wobei zwischen der Messerschneide und den Ausnehmungen in Umfangsrichtung verlaufende und zwischen den Ausnehmungen radial verlaufende Federarme angeordnet sind. Dabei kann es zweckmäßig sein, wenn die Ausnehmungen an ihrer der Messerschneide zugewandten Außenseite eine größere Erstreckung in Umfangsrichtung aufweisen als an ihrer der Mittenöffnung zugewandten Innenseite. Bei einer derartigen Ausführung der Erfindung kann weiterhin vorgesehen sein, daß die radial verlaufenden Begrenzungskanten der Ausnehmungen einen in das Innere der Ausnehmung gerichteten kurvenförmigen Verlauf aufweisen.In an alternative embodiment it is provided that the incisions as symmetrically arranged recesses with a radial extension and with an extension in Are formed circumferential direction, wherein between the Knife edge and the recesses in the circumferential direction extending and radial between the recesses extending spring arms are arranged. It can be useful if the recesses on their the Knife edge facing the outside a larger one Have extent in the circumferential direction than at their Center opening facing inside. With such a Implementation of the invention can also be provided that the radially extending boundary edges of the Recesses directed into the interior of the recess have a curved course.

In einer weiteren Ausführungsform, bei.welcher die Einschnitte ebenfalls als Ausnehmungen ausgebildet sind, kann vorgesehen sein, daß die Einschnitte aus zwei unterschiedlichen, im Wechsel zueinander angeordneten Ausnehmungen bestehen, wobei die erste Gruppe von Ausnehmungen an ihrer der Messerschneide zugewandten Außenseite eine kleinere Erstreckung in Umfangsrichtung aufweist als an ihrer der Mittenöffnung zugewandten Innenseite und die Ausnehmungen der zweiten Gruppe an ihrer der Messerschneide zugewandten Außenseite eine größere Erstreckung in Umfangsrichtung aufweisen als an ihrer der Mittenöffnung zugewandten Innenseite und die Ausnehmungen in den zwischen den Ausnehmungen der ersten Gruppe bestehenden Zwischenräumen angeordnet sind.In a further embodiment, in which the Incisions are also formed as recesses, can be provided that the incisions from two different, arranged alternately There are recesses, the first group of Recesses on their knife edge facing Outside a smaller extent in the circumferential direction has as at the center opening facing Inside and the recesses of the second group on hers a larger outside of the knife edge Have extent in the circumferential direction than at their Center opening facing the inside and the recesses in the between the recesses of the first group existing gaps are arranged.

In einer weiteren alternativen Ausführungsform können die als Schlitze ausgebildeten Einschnitte und die zwischen ihnen gebildeten Federarme einen radialen, auf die Mittenöffnung des Kreismessers ausgerichteten Verlauf aufweisen und sich über einen begrenzten Abschnitt des Radius des Kreismessers erstrecken.In a further alternative embodiment, the incisions formed as slots and the between spring arms formed a radial on them Center aligned course of the circular knife have and over a limited portion of the Extend the radius of the circular knife.

In einer Weiterbildung kann vorgesehen sein, daß die eine gleiche Länge aufweisenden radialen Schlitze in zwei jeweils einen unterschiedlichen Abstand zur Mittenöffnung des Kreismessers aufweisenden Kreisanordnungen ausgeführt sind, wobei die auf dem inneren Kreis liegenden Schlitze jeweils sich zwischen zwei auf dem äußeren Kreis liegenden Schlitze erstrecken und sich mit den auf dem äußeren Kreis liegenden Schlitzen teilweise überlappen, wobei zusätzlich die in regelmäßiger Abfolge angeordneten radialen Schlitze mit einer unterschiedlichen radialen Erstreckung ausgeführt sein können.In a further development it can be provided that one radial slots of equal length in two each a different distance from the center opening of the circular knife having circular arrangements are, with the slits lying on the inner circle each lying between two on the outer circle Slits extend and align with those on the outer circle partially overlapping slits, with additional the radial slots arranged in a regular sequence executed with a different radial extent could be.

Um die Federeigenschaften des Messers zu verbessern kann vorgesehen sein, daß die auf dem inneren Kreis angeordneten Schlitze ihren Ausgang von der Mittenöffnung nehmen.To improve the spring properties of the knife be provided that arranged on the inner circle Slots take their exit from the center opening.

Soweit die Einschnitte als im wesentlichen radial verlaufende Schlitze ausgebildet sind, können diese Einschnitte auch in einer alternativen Konfiguration als U-förmig verlaufende Schlitze ausgebildet und mit radial nach außen zur Messerschneide gerichteten U-Schenkeln auf dem Kreismesser angeordnet sein. As far as the incisions as essentially radial extending slots are formed, they can Incisions also in an alternative configuration as a U-shaped extending slits formed and with radial to U-legs on the outside facing the knife edge Circular knife can be arranged.

Mit Blick auf eine symmetrische Anordnung derartiger U-förmiger Schlitze kann vorgesehen sein, daß die Einschnitte als U-förmig verlaufende Schlitze ausgebildet sind, wobei eine erste Gruppe von U-förmigen Schlitzen mit ihren offenen U-Schenkeln zur Messerschneide ausgerichtet und eine zweite Gruppe von U-förmigen Schlitzen mit ihren offenen U-Schenkeln zur Mittenöffnung ausgerichtet ist, wobei jeweils ein U-Schenkel der U-förmigen Schlitze der einen Gruppe zwischen zwei U-Schenkeln der U-förmigen Schlitze der anderen Gruppe eingreift und der andere U-Schenkel zwischen zwei U-förmigen Schlitzen der anderen Gruppe angeordnet ist.With a view to a symmetrical arrangement of such U-shaped Slits can be provided that the incisions are designed as U-shaped slots, wherein a first group of U-shaped slots with their open U-legs aligned to the knife edge and a second group of U-shaped slots with their open U-legs are aligned with the center opening, each having a U-leg of the U-shaped slots a group between two U-legs of the U-shaped Slots of the other group engages and the other U-leg between two U-shaped slots in the other Group is arranged.

Ebenso wie bei den einfach gerade ausgebildeten Schlitzen kann auch bei einer derartigen Konfiguration vorgesehen sein, daß die U-Schenkel der U-förmigen Schlitze der ersten Gruppe ihren Ausgang von der Mittenöffnung nehmen.Just like with the just straight slots can also be provided in such a configuration be that the U-legs of the U-shaped slots the first group their exit from the central opening to take.

Soweit für die Schneiden derartiger Kreismesser in der Praxis eine Rockwell-Härte von ungefähr 60 HRc bzw. von 58 bis 60 HRc gefordert wird, besteht mit der Verwirklichung der Erfindung die Möglichkeit, das Messerblatt aus einem Grundmaterial mit einer geringeren Härte als die für Ausbildung der Messerschneide geltenden Härte zu fertigen und die für Messerschneiden geforderte Härte durch Beschichtung mit einem geeigneten Material zu erreichen. Damit ist der Vorteil verbunden, daß aufgrund der mit einem Material geringerer Härte verbundenen besseren Federeigenschaften bei gleichzeitiger Beibehaltung der Schneidqualität die Federwirkung des Kreismessers insgesamt noch verbessert ist. So kann nach einem Ausführungsbeispiel der Erfindung das Messerblatt des Kreismessers aus einem Bandstahl handelsüblicher Ausbildung bestehen, der eine Rockwell-Härte von um die 40 HRC aufweist, wobei die für Messerschneiden geforderte Rockwell-Härte von um die 60 HRc durch eine Beschichtung mit einem geeigneten Material sichergestellt ist.Insofar as a Rockwell hardness of approximately 60 HR c or from 58 to 60 HR c is required in practice for the cutting of such circular knives, with the realization of the invention it is possible to make the knife blade from a base material with a lower hardness than that for Training the knife edge to manufacture applicable hardness and to achieve the hardness required for knife edges by coating with a suitable material. This has the advantage that, due to the better spring properties associated with a material of lower hardness while at the same time maintaining the cutting quality, the spring action of the circular knife is improved overall. Thus, according to one embodiment of the invention, the knife blade of the circular knife can consist of a band steel of commercially available design, which has a Rockwell hardness of around 40 HR C , the Rockwell hardness required for knife edges of around 60 HR c by a coating with a suitable material is ensured.

In der Zeichnung sind Ausführungsbeispiele der Erfindung wiedergegeben, welche nachstehend beschrieben sind. Es zeigen:

Fig. 1
ein selbstfederndes Kreismesser mit in Umfangsrichtung verlaufenden Einschnitten und Federarmen in einer Seitenansicht,
Fig. 2
den Gegenstand der Figur 1 mit als Ausnehmungen ausgebildeten Einschnitten,
Fig. 3
den Gegenstand der Figur 2 in, einer anderen Ausführungsform,
Fig. 4
den Gegenstand der Figur 1 mit radial angeordneten, als Schlitze ausgebildeten Einschnitten,
Fig. 5
den Gegenstand der Figur 4 in einer anderen Ausführungsform,
Fig. 6
den Gegenstand der Figur 5 in einer Abwandlung.
In the drawing, exemplary embodiments of the invention are shown, which are described below. Show it:
Fig. 1
a self-resilient circular knife with incisions running in the circumferential direction and spring arms in a side view,
Fig. 2
1 with incisions formed as recesses,
Fig. 3
the subject of Figure 2 in another embodiment,
Fig. 4
1 with radially arranged incisions formed as slots,
Fig. 5
the object of Figure 4 in another embodiment,
Fig. 6
the subject of Figure 5 in a modification.

Das Messerblatt 10 weist eine auf seinem äußeren Umfang liegende Messerschneide 11 sowie eine zentrale Mittenöffnung 12 zur Halterung des Messerblattes 10 beispielsweise auf der Nabe eines Messerhalters auf.The knife blade 10 has one on its outer circumference horizontal knife edge 11 and a central one Center opening 12 for holding the knife blade 10 for example on the hub of a knife holder.

Auf einer ersten, mit dem Radius R1 zum Mittelpunkt des Messerblattes 10 angeordneten Umfangslinie 13 sind bei dem dargestellten Ausführungsbeispiel drei Einschnitte mit einer begrenzten Länge angeordnet; die auf der ersten Umfangslinie 13 liegenden Einschnitte sind als schlitzförmige Durchbrechungen 14 ausgebildet, zwischen denen Materialstege 19 stehen. Die auf der ersten Umfangslinie 13 angeordneten Durchbrechungen 14 setzen sich in auf einer zweiten, mit dem größeren Radius R2 zum Mittelpunkt des Messerblattes angeordneten Umfangslinie 16 liegende Trennschnitte 15 fort, wobei die äußeren Trennschnitte 15 eine gleiche Erstreckung in Umfangsrichtung aufweisen, wie die innenliegenden Durchbrechungen 14. Um ein Weiterreißen der Trennschnitte im Betrieb des Kreismessers zu verhindern, enden die Trennschnitte 15 in Stopplöchern 17.In the exemplary embodiment shown, three incisions with a limited length are arranged on a first circumferential line 13 with the radius R 1 at the center of the knife blade 10; the incisions lying on the first circumferential line 13 are designed as slot-shaped openings 14, between which material webs 19 are located. The openings 14 arranged on the first circumferential line 13 continue into separating cuts 15 located on a second circumferential line 16 with the larger radius R 2 at the center of the knife blade, the outer separating cuts 15 having the same extent in the circumferential direction as the internal openings 14. In order to prevent the separating cuts from tearing during operation of the circular knife, the separating cuts 15 end in stop holes 17.

In Figur 2 ist ein Ausführungsbeispiel der Erfindung dargestellt, bei welchem die Einschnitte als Ausnehmungen 20 ausgebildet sind, so daß zwischen der Messerschneide 11 und den Ausnehmungen 20 in Umfangsrichtung verlaufende Federarme 18 angeordnet sind, wie auch zwischen den Ausnehmungen 20 selbst radial verlaufende Federarme 18. Bei einer radialen Erstreckung 21 weisen die Ausnehmungen 20 an ihrer der Messerschneide 11 zugewandten Außenseite eine etwas größere Erstreckung in Umfangsrichtung auf als an ihrer der Mittenöffnung 12 zugewandten Innenseite.In Figure 2 is an embodiment of the invention shown, in which the incisions as recesses 20 are formed so that between the knife edge 11th and the recesses 20 extending in the circumferential direction Spring arms 18 are arranged, as well as between the Recesses 20 even radially extending spring arms 18. At The recesses 20 have a radial extension 21 of its outside facing the knife edge 11 somewhat larger extent in the circumferential direction than at their inner side facing the central opening 12.

In einer Abwandlung dazu sind bei dem in Figur 3 dargestellten Ausführungsbeispiel zwei Ausnehmungen mit jeweils unterschiedlicher Formgebung im Wechsel zueinander derart angeordnet, daß die Ausnehmungen jeweils wechselweise in den zwischen ihnen bestehenden Zwischenräumen angeordnet sind. Im einzelnen ist eine erste Gruppe von Ausnehmungen 25 vorgesehen, die dadurch definiert sind, daß diese an ihrer der Messerschneide 11 zugewandten Außenseite eine kleinere Erstreckung in Umfangsrichtung aufweisen als an ihrer der Mittenöffnung 12 zugewandten Innenseite. In Formentsprechung mit den zwischen den Ausnehmungen 25 bestehenden Zwischenräumen ist eine zweite Gruppe von Ausnehmungen 26 vorgesehen, die an ihrer der Messerschneide 11 zugewandten Außenseite eine größere Erstreckung in Umfangsrichtung aufweisen als an ihrer der Mittenöffnung 12 zugewandten Innenseite, so daß diese Ausnehmungen 26 der zweiten Gruppe korrespondierend in die Zwischenräume der der ersten Gruppe zuzurechnenden Ausnehmungen 25 passen.In a modification to this, in FIG illustrated embodiment with two recesses different shapes alternating with each other arranged such that the recesses each alternately in the existing between them Spaces are arranged. The first is in detail Group of recesses 25 provided by this are defined that these on their knife edge 11th facing outside a smaller extension in Have the circumferential direction than at their central opening 12 facing inside. In line with the shape between the recesses 25 existing spaces a second group of recesses 26 are provided which of its outside facing the knife edge 11 have greater extent in the circumferential direction than at their inner side facing the center opening 12, so that these recesses 26 correspond to the second group in the spaces between those of the first group Recesses 25 fit.

Die Figuren 4 bis 6 zeigen Ausführungsbeispiele der Erfindung, bei denen die Einschnitte als im wesentlichen radial angeordnete Schlitze ausgebildet sind. So ist bei dem in Figur 4 dargestellten Ausführungsbeispiel vorgesehen, daß jeweils eine gleiche Länge aufweisende radiale Schlitze 30 in zwei jeweils einen unterschiedlichen Abstand zur Mittenöffnung 12 des Kreismessers aufweisenden Kreisanordnungen 31 bzw. 32 angeordnet sind, wobei die auf dem der Mittenöffnung 12 näheren inneren Kreis 31 liegenden Schlitze 30 sich jeweils zwischen zwei auf dem äußeren und der Messerschneide 11 näherliegenden Kreis 32 liegenden Schlitze 30 erstrecken, wobei sich die auf den beiden Kreisen 31, 32 liegenden Schlitze 30 wechselseitig überlappen. Wie nicht weiter dargestellt, können analog zu dem in Figur 6 noch erläuterten Ausführungsbeispiel die Schlitze 30 des inneren Kreises 31 ihren Ausgang von der Mittenöffnung 12 nehmen.Figures 4 to 6 show embodiments of the Invention where the incisions are considered essentially radially arranged slots are formed. So is with the embodiment shown in Figure 4 provided that each have the same length radial slots 30 in two different each Distance to the center opening 12 of the circular knife Circular arrangements 31 and 32 are arranged, the on the inner circle 31 closer to the central opening 12 Slots 30 each between two on the outer and the knife edge 11 closer circle 32 Extend slots 30, which are on the two Circles 31, 32 lying slots 30 alternately overlap. As not shown further, can be analogous to the embodiment explained in Figure 6 Slots 30 of the inner circle 31 their exit from the Take center opening 12.

Das in Figur 5 dargestellte Ausführungsbeispiel zeigt eine Konfiguration der als Einschnitte vorgesehenen U-förmig verlaufenden Schlitze 35, bei welcher eine erste Gruppe 37 von U-förmigen Schlitzen 35 angeordnet ist, die mit ihren offenen U-Schenkeln 36 zur Messerschneide 11 ausgerichtet sind, wobei eine zweite Gruppe 38 von U-förmigen Schlitzen 35 mit ihren offenen U-Schenkeln 36 zur Mittenöffnung 12 des Kreismessers ausgerichtet ist; die beiderseitigen U-förmigen Schlitze sind dabei in gegenseitiger Überlappung bzw. in gegenseitigem Eingriff so angeordnet, daß jeweils ein U-Schenkel 36 der der einen Gruppe 37 zugehörigen U-förmigen Schlitze 35 zwischen zwei U-Schenkel 36 der U-förmigen Schlitze 35 der anderen Gruppe 38 eingreift und der andere zugehörige U-Schenkel zwischen zwei U-förmigen Schlitzen der anderen Gruppe angeordnet ist.The embodiment shown in Figure 5 shows one Configuration of the U-shaped cuts extending slots 35, in which a first group 37 of U-shaped slots 35 is arranged, with their open U-legs 36 aligned with the knife edge 11 are a second group 38 of U-shaped slots 35 with their open U-legs 36 to the central opening 12 the circular knife is aligned; the U-shaped on both sides Slots are mutually overlapping or arranged in mutual engagement so that each a U-leg 36 of a group 37 associated U-shaped Slits 35 between two U-legs 36 of the U-shaped Slots 35 of the other group 38 engages and the other associated U-leg between two U-shaped Slots of the other group is arranged.

Aus Figur 6 ergibt sich eine der Figur 5 entsprechende Anordnung, bei der die U-Schenkel 36 der der ersten Gruppe 37 zugehörigen U-förmigen Schlitze 35 ihren Ausgang von der Mittenöffnung 12 nehmen, so daß der Umfang der Mittenöffnung die Verbindung zwischen den U-Schenkeln 36 der der ersten Gruppe 37 zugehörigen Einschnitte ersetzt. FIG. 6 shows one corresponding to FIG. 5 Arrangement in which the U-legs 36 of the first group 37 associated U-shaped slots 35 their output from the Take center opening 12 so that the scope of the Center opening the connection between the U-legs 36 the incisions belonging to the first group 37 are replaced.

Die in der vorstehenden Beschreibung, den Patentansprüchen, der Zusammenfassung und der Zeichnung offenbarten Merkmale des Gegenstandes dieser Unterlagen können einzeln als auch in beliebigen Kombinationen untereinander für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen wesentlich sein.The in the above description, the claims, the summary and the drawing disclosed features The subject matter of these documents can be used individually as well in any combination with each other for the Realization of the invention in its various Embodiments may be essential.

Claims (22)

  1. Slitter for a longitudinal cutting machine with scissors cutting action, wherein the knife blade (10) has a central opening (12) for securing the slitter on a knife holder and has at its outer circumference a circumferential knife edge (11), characterized in that in the area between the central opening (12) and the knife edge (11) of the knife blade (10) penetrating cuts (14, 15, 20, 30, 35) extending through the material thickness of the knife blade are provided for forming spring arms (18) defined between the knife edge (11) and penetrating cuts (14, 15, 20, 30, 35) and/or between the penetrating cuts (14, 15, 20, 25, 30, 35).
  2. Slitter according to claim 1, characterized in that the penetrating cuts (14, 15) and the spring arms (18) formed thereby extend in the circumferential direction of the slitter.
  3. Slitter according to claim 2, characterized in that the penetrating cuts are linear separating cuts (15).
  4. Slitter according to claim 2, characterized in that the cuts are slit-shaped penetrations (14) of the knife blade (10).
  5. Slitter according to one of the claims 2 through 4, characterized in that on a circumferential line (13, 16) having a constant radius, a sequence of several penetrating cuts (14, 15) of limited length are formed.
  6. Slitter according to one of the claims 2 through 5, characterized in that the cuts (14, 15) are arranged on several circumferential lines (13, 16) having different radii.
  7. Slitter according to claim 5 and 6, characterized in that the penetrating cuts (14, 15) of limited length positioned on the circumferential lines (13, 16) with different radii (R1; R2) are staggered relative to one another.
  8. Slitter according to one of the claims 5 through 7, characterized in that the separating cuts (14, 15) arranged on a first circumferential line (13) are extended to a second circumferential line (16) having a different radius and have a length on the second circumferential line (16) overlapping a neighboring penetrating cut (14, 15) on the first circumferential line (13).
  9. Slitter according to claim 8, characterized in that a penetrating cut (14, 15) extends over several circumferential lines (13, 16) with different radii.
  10. Slitter according to claim 1, characterized in that the penetrating cuts are symmetrically arranged cutouts (20) with a radial extension (21) and with an extension in the circumferential direction (22, 23) wherein between the knife edge (11) and the cutouts (20) spring arms (18) are arranged which extend in the circumferential direction and radially between the cutouts (20).
  11. Slitter according to claim 10, characterized in that the outer side (22) of the cutouts (20) facing the knife edge (11) has a greater extension in the circumferential direction than its inner side (23) facing the central opening (12).
  12. Slitter according to claim 11, characterized in that the radial extension (21) of the cutouts (20) have a curved extension inio the interior of the cutout.
  13. Slitter according to claim 10, characterized in that the cutouts (20) are comprised of two different alternatingly arranged cutouts (25, 26) wherein the outer side (22) of the first group of cutouts (25) facing the knife edge (11) has a smaller extension in the circumferential direction than at the inner side (23) facing the central opening (12) and the outer side (22) of the cutouts (26) of the second group facing the blade edge (11) has a greater circumferential extension than at the inner side (23) facing the central opening (12), wherein the cutouts (26) are arranged in the intermediate spaces between the cutouts (25) of the first group.
  14. Slitter according to claim 1, characterized in that the penetrating cuts embodied as slots (30) and the spring arms (18) formed therebetween have a radial extension toward the central opening (12) of the slitter and extend over a limited portion of the radius of the slitter.
  15. Slitter according to claim 14, characterized in that radial slots (30) having identical length are arranged in two circular arrangements (31, 32) having different spacing to the central opening (12) of the slitter, wherein the slots positioned on the inner circle (31) extend respectively between two slots (30) of the outer circle (32) and partially overlap with the slots (30) positioned on the outer circle (32).
  16. Slitter according to claim 15, characterized in that the radial slots (30) arranged in uniform spacing are embodied with different radial extension.
  17. Slitter according to one of the claims 14 through 16, characterized in that the slots (30) positioned on the inner circle (31) start at the central opening (12).
  18. Slitter according to claim 14, characterized in that the penetrating cuts are U-shaped slots (35) having radially extending U-legs (38) arranged on the slitter so as to project toward the knife edge (11).
  19. Slitter according to claim 14, characterized in that the penetrating cuts are U-shaped slots (35), wherein a first group (37) of the U-shaped slots (35) are arranged with their open U-legs (36) toward the knife edge (11) and a second group (38) of U-shaped slots (35) are arranged with their open U-shaped legs (36) toward the central opening (12), wherein a respective U-leg (36) of the U-shaped slots (35) of one group (37) engages between the two U-legs (36) of the U-shaped slots (35) of the other group (38) and the other U-leg (36) engages between two U-shaped slots (35) of the other group (37).
  20. Slitter according to claim 19, characterized in that the U-legs (36) of the U-shaped slots (35) of the first group (37) start from the central opening (12).
  21. Slitter according to one of the claims 1 through 20, characterized in that the knife blade (10) is comprised of a base material with a reduced hardness in comparison to the required hardness for embodying the knife edge (11) and is provided in the area forming the knife edge (11) with a coating that ensures the required hardness of the knife edge.
  22. Slitter according to claim 21, characterized in that the knife blade (10) of the slitter is comprised of strip steel with a Rockwell hardness of 40 HRc and the coating has a Rockwell hardness of 60 HRc.
EP98943672A 1997-07-18 1998-07-07 Slitter with its own suspension for longitudinal cutting machines with scissors cutting Expired - Lifetime EP0996527B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19730815A DE19730815C1 (en) 1997-07-18 1997-07-18 Circular cutter for metal strip separator
DE19730815 1997-07-18
PCT/DE1998/001945 WO1999003654A1 (en) 1997-07-18 1998-07-07 Slitter with its own suspension for longitudinal cutting machines with scissors cutting

Publications (2)

Publication Number Publication Date
EP0996527A1 EP0996527A1 (en) 2000-05-03
EP0996527B1 true EP0996527B1 (en) 2001-04-11

Family

ID=7836099

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98943672A Expired - Lifetime EP0996527B1 (en) 1997-07-18 1998-07-07 Slitter with its own suspension for longitudinal cutting machines with scissors cutting

Country Status (5)

Country Link
EP (1) EP0996527B1 (en)
JP (1) JP4243748B2 (en)
AU (1) AU9152198A (en)
DE (3) DE19730815C1 (en)
WO (1) WO1999003654A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008005799A1 (en) 2008-01-24 2009-07-30 Koenig & Bauer Aktiengesellschaft Knife i.e. circular knife, holder for use in slitter of sheet-fed rotary press, has flexible unit with detention-firm connection to knife axle and knife head arranged in annular gap, where knife head springily pushes away on connection
GB0812784D0 (en) * 2008-07-14 2008-08-20 British American Tobacco Co Cigarette filter cutting element
ITMI20112198A1 (en) * 2011-12-01 2013-06-02 Gaetano Scattolin CIRCULAR BLADE FOR SLICERS, PARTICULARLY FOR INDUSTRIAL-TYPE SLICERS.
DE102019104029A1 (en) * 2019-02-18 2020-08-20 Sprick Gmbh Bielefelder Papier- Und Wellpappenwerke & Co. Device for cutting a packaging material web

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1842608U (en) * 1961-09-13 1961-11-30 Wilhelm Bilstein Dreherei CIRCULAR KNIVES FOR ROLLER CUTTING MACHINES.
DE4038434A1 (en) * 1990-12-01 1992-06-04 Goebel Gmbh Maschf Travelling substratum material-cutting equipment - uses cross cut knife so as to generate no squeezing effect
DE9105290U1 (en) * 1991-04-30 1991-07-04 Dienes Werke für Maschinenteile GmbH & Co KG, 5063 Overath Scissor cutting knife holder with shear angle adjustment
DE19610661A1 (en) * 1996-03-08 1997-09-11 Wabaema Gmbh Slicer disc e.g. for bread with pointed cutting edge
DE19612055A1 (en) * 1996-03-27 1997-10-02 Wabaema Gmbh Blade for cutting food, especially bread

Also Published As

Publication number Publication date
WO1999003654A1 (en) 1999-01-28
JP2001510100A (en) 2001-07-31
DE19830481A1 (en) 1999-01-21
JP4243748B2 (en) 2009-03-25
EP0996527A1 (en) 2000-05-03
DE59800634D1 (en) 2001-05-17
WO1999003654A9 (en) 1999-05-27
DE19730815C1 (en) 1998-11-26
AU9152198A (en) 1999-02-10

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