WO2011103957A1 - Blade for a cutting device in a machine for producing rod-shaped products in the tobacco processing industry - Google Patents

Blade for a cutting device in a machine for producing rod-shaped products in the tobacco processing industry Download PDF

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Publication number
WO2011103957A1
WO2011103957A1 PCT/EP2011/000400 EP2011000400W WO2011103957A1 WO 2011103957 A1 WO2011103957 A1 WO 2011103957A1 EP 2011000400 W EP2011000400 W EP 2011000400W WO 2011103957 A1 WO2011103957 A1 WO 2011103957A1
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WIPO (PCT)
Prior art keywords
cutting
steel
blade
machine
cutting blade
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PCT/EP2011/000400
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German (de)
French (fr)
Inventor
Alexander Gansewig
Heinz Offermann
Andreas Ducci
Oliver Matern
Original Assignee
Hauni Maschinenbau Ag
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Application filed by Hauni Maschinenbau Ag filed Critical Hauni Maschinenbau Ag
Priority to PL11702583T priority Critical patent/PL2538809T3/en
Priority to CN201180011132.9A priority patent/CN102762119B/en
Priority to EP11702583.3A priority patent/EP2538809B1/en
Publication of WO2011103957A1 publication Critical patent/WO2011103957A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/28—Cutting-off the tobacco rod

Definitions

  • Cutting knife for a cutting device in a machine for producing rod-shaped products of the tobacco-processing industry
  • the invention relates to a cutting blade for a cutting device in a machine for the production of rod-shaped products of the tobacco-processing industry having the features of the preamble of claim 1.
  • Rod shaped products of the tobacco processing industry are e.g. Cigarettes, cigarillos or filters in which the ingredients are protected by a wrapping material, such as e.g. Paper, held together form-solid.
  • a wrapping material such as e.g. Paper
  • modern machines are used, which include, inter alia, a step in which the rod-shaped product is cut from a continuously fed strand in a cutting device by means of a cutting knife.
  • the cutting device comprises a rotating knife carrier, on which the cutting blades are clamped, and a tube with a guide for the strand, which simultaneously forms an abutment for the strand passing through the cutting blade in addition to the leadership of the strand.
  • the cutting blade is due to the high cutting frequency natural wear, which can lead to an unclean cutting edge of the cut surface of the strand.
  • the cutting blades are ground in the machine by means of one or more grinding wheels and fed by a feed device in the direction of the cutting edge. After a certain wear, the cutting blades must be replaced, for which the operation of the machine usually has to be interrupted.
  • a disadvantage of such regrinding of the cutting blades is that sparks occur during grinding, which should in principle be reduced to a minimum, since in extreme cases parts of the machine itself or of the strand can be damaged or even set on fire by the flying sparks.
  • the object of the invention is to provide a cutting blade, which can be ground with a reduced sparking and should have a high wear resistance.
  • the cutting blade is formed from a stainless martensitic steel.
  • Martensitic steels have the advantage that the martensite produced by the transformation of the austenite in the hardening process leads to a considerable improvement in wear resistance. Martensite is formed when a steel with a carbon content of more than 0.2% is suddenly cooled in a hardening process.
  • the steel should be made stainless, which is achieved by having at least 10.5% Cr and at most 1.2% C.
  • the chromium component leads to the formation of very wear-resistant carbides in the steel during curing, as a result of which the wear resistance of the carbides
  • cutting blade is further improved.
  • the wear resistance of the cutting blade is achieved in this case primarily by the carbides and not by a strain of the lattice structure, as is the case with the cutting knives in the prior art.
  • Another advantage of using chromium as an alloying ingredient is that the energy required to induce sparking by the non-combustible chromium is increased, which in turn results in overall sparking during grinding a predetermined grinding speed is reduced.
  • the proposed use of a stainless martensitic steel for the cutting blade can thus be
  • Cutting knife with a long service life and wear resistance are created at the same time less sparking during grinding.
  • a cutting blade can be created, which has an improved behavior with simple means regarding both criteria.
  • Another advantage resulting from the invention is that the cutting blade no longer needs to be oiled during transport or during storage to avoid corrosion.
  • the steel should have at least 10.5% chromium (Cr), so that sparking at a grinding speed of 30-60 m / s can be almost completely prevented.
  • the steel should have a carbon content of 0.2-1.2%, preferably 0.8%, so that the steel can be hardened to the required hardness of at least 500 HV.
  • the steel has a proportion of 0.2-1.0%, preferably 0.7% niobium (Nb).
  • Niobium is also a carbide former, which is characterized by a very rapid formation of niobium carbide, which can prevent the formation of very large chromium carbides. Due to the overall smaller Carbide the cutting edge of the cutting blade can be sharpened thinner and sharper, which in turn benefits the quality of the Cut surface of the product offers.
  • the steel has a proportion of 0.5-1.5%, preferably 1.1%, of molybdenum (Mo).
  • Mo molybdenum
  • the molybdenum further special carbides are formed by the stability and wear resistance of the cutting blade can be further increased.
  • V vanadium
  • Vanadium reduces potential intergranular corrosion by carbide formation. Further, by the vanadium, a hardening drop of the cutting blade is prevented up to a heating of the cutting blade up to a temperature of 600 degrees, thereby preventing the hardness of the
  • Cutting knife decreases due to the heating caused by the grinding again. This prevented hardness decrease in turn leads to an extension of the service life of the cutting blade.
  • the cutting blade has a hardness of at least 400-700 HV, preferably 600 HV.
  • Fig.l blade carrier of a cutting device of a machine for the production of tobacco industry products with cutting knives according to the invention.
  • FIG l is a cutting device for a machine for the manufacture of products of the tobacco-processing industry with a rotatable blade carrier 1 to detect, are clamped on the two cutting blades 2 and 3.
  • the products of the tobacco processing industry may be, for example, cigarettes, cigarillos or filters, which are cut by the cutting device from a supplied strand in a predetermined length.
  • a grinding device 4 is arranged on the cutting device with a driven by an electric motor grinding wheel 5, on which the cutting blades 2 and 3 are guided past at regular intervals for grinding.
  • the cutting blades 2 and 3 are thereby ground with a resulting from the rotational speeds of the blade carrier 1 and the grinding wheel 5 grinding speed of 30- 60m / s.
  • the cutting blades 2 and 3 according to the invention are formed from a stainless martensitic steel.
  • An exemplary grade of steel is e.g. known under the material number 1.4153.03.
  • the steel is martensitic, ie it has a carbon content of 0.8%, and can thereby be cured to a hardness greater than 400 HV, preferably 600 HV.
  • a sufficient martensite in the steel to achieve the required hardness can be achieved by having a carbon content of between 0.2 and 1.2%, with the value of 0.8% being found to be particularly advantageous.
  • Cutting knives 2 and 3 selected steel a stainless steel, which by definition according to DIN EN 10 020 means that the steel has a chromium content of at least 10.5%.
  • Chromium content leads to a reduction in the spark generated during grinding, since the non-combustible chromium increases the energy required to form sparks by the particles dissolved out during grinding.
  • Cutting knife 2 and 3 can be further increased.
  • both the required wear resistance and spark generation can be obtained, so that the proposed steel can improve the characteristics of the cutting knives 2 and 3 with respect to both criteria with simple means.
  • the steel of the cutting blades 2 and 3 has a proportion of 0.2-1.0%, preferably 0.7%, of niobium, so that the rapid formation of niobium carbide causes the chromium carbides to be smaller.
  • the cutting blades 2 and 3 can be finely ground by the smaller chromium carbides, so that the cutting edge of the cutting blades 2 and 3 is sharper, and the cut surface of the products is qualitatively improved.
  • carbide formation can be further enhanced by alloying 0.5-1.5%, preferably 1.1%, molybdenum.
  • Molybdenum is also a so-called special carbide former, by which carbides of smaller size are preferably formed with the advantages described above.
  • the material of the cutting blade can have a proportion of 0.5-1.5%, preferably 0.9%, of vanadium, by means of which a heat-related hardening drop of the cutting blades 2 and 3 can be prevented. Since the alloying component vanadium is a carbide former, the addition of vanadium can achieve a similar advantage as the addition of niobium or molybdenum.
  • the hardness of the cutting blades 2 and 3 is at least 400-700 HV, preferably 600 HV, which can be adjusted by a corresponding martensite part and the carbides incorporated therein.
  • the formation of the carbides can be influenced by a targeted heat treatment.

Landscapes

  • Knives (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)

Abstract

The invention relates to a blade (2, 3) for a cutting device in a machine for producing products in the tobacco processing industry. Said blade (2, 3) is made from a rust-resistant martensitic steel.

Description

Schneidmesser für eine Schneidvorrichtung in einer Maschine zur Herstellung von stabförmigen Produkten der Tabak verarbeitenden Industrie  Cutting knife for a cutting device in a machine for producing rod-shaped products of the tobacco-processing industry
Die Erfindung betrifft ein Schneidmesser für eine Schneidvorrichtung in einer Maschine zur Herstellung von stabförmigen Produkten der Tabak verarbeitenden Industrie mit den Merkmalen des Oberbegriffs von Anspruch 1. The invention relates to a cutting blade for a cutting device in a machine for the production of rod-shaped products of the tobacco-processing industry having the features of the preamble of claim 1.
Stabförmige Produkte der Tabak verarbeitenden Industrie sind z.B. Zigaretten, Zigarillos oder Filter, in denen die Inhaltsstoffe durch ein Hüllmaterial, wie z.B. Papier, formfest zusammengehalten werden. Zur Herstellung der stabförmigen Produkte werden moderne Maschinen verwendet, welche unter anderem einen Arbeitsschritt umfassen, in dem das stabförmige Produkt aus einem kontinuierlich zugeführten Strang in einer Schneidvorrichtung mittels eines Schneidmessers abgeschnitten wird. Rod shaped products of the tobacco processing industry are e.g. Cigarettes, cigarillos or filters in which the ingredients are protected by a wrapping material, such as e.g. Paper, held together form-solid. For the production of the rod-shaped products modern machines are used, which include, inter alia, a step in which the rod-shaped product is cut from a continuously fed strand in a cutting device by means of a cutting knife.
Die Schneidvorrichtung umfasst einen rotierenden Messerträger, an dem die Schneidmesser eingespannt sind, und eine Tube mit einer Führung für den Strang, welche neben der Führung des Stranges gleichzeitig ein Gegenlager für das durch den Strang fahrende Schneidmesser bildet. Das Schneidmesser unterliegt aufgrund der hohen Schnittfrequenz einem natürlichen Verschleiß, welcher zu einer unsauberen Schnittkante der Schnittfläche des Stranges führen kann. Zur Kompensation des Verschleißes werden die Schneidmesser in der Maschine mittels einer oder mehrerer Schleifscheiben geschliffen und über eine Vorschubeinrichtung in Richtung der Schneidkante nachgeschoben. Nach einer bestimmten Abnutzung müssen die Schneidmesser ausgetauscht werden, wozu der Betrieb der Maschine in der Regel unterbrochen werden muss . Ein Nachteil bei einem solchen Nachschleifen der Schneidmesser ist, dass während des Schleifens Funken entstehen, welche grundsätzlich auf ein Minimum reduziert werden sollten, da durch den Funkenflug im Extremfall Teile der Maschine selbst oder der Strang beschädigt oder sogar in Brand gesetzt werden können . The cutting device comprises a rotating knife carrier, on which the cutting blades are clamped, and a tube with a guide for the strand, which simultaneously forms an abutment for the strand passing through the cutting blade in addition to the leadership of the strand. The cutting blade is due to the high cutting frequency natural wear, which can lead to an unclean cutting edge of the cut surface of the strand. To compensate for the wear, the cutting blades are ground in the machine by means of one or more grinding wheels and fed by a feed device in the direction of the cutting edge. After a certain wear, the cutting blades must be replaced, for which the operation of the machine usually has to be interrupted. A disadvantage of such regrinding of the cutting blades is that sparks occur during grinding, which should in principle be reduced to a minimum, since in extreme cases parts of the machine itself or of the strand can be damaged or even set on fire by the flying sparks.
Aufgabe der Erfindung ist es, ein Schneidmesser zu schaffen, welches mit einer reduzierten Funkenbildung geschliffen werden kann und eine hohe Verschleißbeständigkeit aufweisen soll. The object of the invention is to provide a cutting blade, which can be ground with a reduced sparking and should have a high wear resistance.
Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, dass das Schneidmesser aus einem nichtrostenden martensiti- schen Stahl gebildet ist. Martensitische Stähle weisen den Vorteil auf, dass der durch die Umwandlung des Austenits im Härteverfahren entstandene Martensit zu einer erheblichen Verbesserung der Verschleißbeständigkeit führt . Martensit wird gebildet, wenn ein Stahl mit einem Kohlenstoffgehalt von mehr als 0,2 % in einem Härteverfahren plötzlich abgekühlt wird. Ferner soll der Stahl nichtrostend ausgebildet sein, was dadurch erreicht wird, indem dieser wenigstens 10,5 % Cr und maximal 1,2 % C aufweist. Der Chrombestandteil führt dazu, dass in dem Stahl beim Härten sehr verschleißbeständige Carbide gebildet werden, durch die die Verschleißbeständigkeit der To achieve the object, it is proposed according to the invention that the cutting blade is formed from a stainless martensitic steel. Martensitic steels have the advantage that the martensite produced by the transformation of the austenite in the hardening process leads to a considerable improvement in wear resistance. Martensite is formed when a steel with a carbon content of more than 0.2% is suddenly cooled in a hardening process. Furthermore, the steel should be made stainless, which is achieved by having at least 10.5% Cr and at most 1.2% C. The chromium component leads to the formation of very wear-resistant carbides in the steel during curing, as a result of which the wear resistance of the carbides
Schneidmesser insgesamt weiter verbessert wird. Die Verschleißbeständigkeit des Schneidmessers wird in diesem Fall primär durch die Carbide und nicht durch eine Verspannung des Gitterverbandes erzielt, wie dies bei den Schneidmessern im Stand der Technik der Fall ist . Ein weiterer Vorteil der Verwendung von Chrom als Legierungsbestandteil liegt darin, dass die erforderliche Energie zur Auslösung der Funkenbildung durch das nicht brennbare Chrom erhöht wird, was wiederum zur Folge hat, dass die Funkenbildung beim Schleifen insgesamt bei einer vorgegebenen Schleifgeschwindigkeit verringert wird. Durch die vorgeschlagene Verwendung eines nichtrostenden mar- tensitischen Stahls für das Schneidmesser kann damit ein Overall, cutting blade is further improved. The wear resistance of the cutting blade is achieved in this case primarily by the carbides and not by a strain of the lattice structure, as is the case with the cutting knives in the prior art. Another advantage of using chromium as an alloying ingredient is that the energy required to induce sparking by the non-combustible chromium is increased, which in turn results in overall sparking during grinding a predetermined grinding speed is reduced. The proposed use of a stainless martensitic steel for the cutting blade can thus be
Schneidmesser mit einer hohen Standzeit bzw. Verschleißbeständigkeit bei einer gleichzeitig geringeren Funkenbildung beim Schleifen geschaffen werden. Damit kann ein Schneidmesser geschaffen werden, welches mit einfachen Mitteln hinsichtlich beider Kriterien ein verbessertes Verhalten aufweist. Ferner ist es möglich, die Schleifgeschwindigkeit auf bis zu 60 m/s zu erhöhen, ohne dass dabei die Funkenentstehung ein für die Einrichtung gefährliches Maß überschreitet. Ein weiterer, sich aus der Erfindung ergebender Vorteil ist, dass das Schneidmesser während des Transportes oder während der Lagerung zur Vermeidung von Korrosion nicht mehr geölt werden muss. Cutting knife with a long service life and wear resistance are created at the same time less sparking during grinding. Thus, a cutting blade can be created, which has an improved behavior with simple means regarding both criteria. Furthermore, it is possible to increase the grinding speed up to 60 m / s, without causing the spark to be dangerous for the device. Another advantage resulting from the invention is that the cutting blade no longer needs to be oiled during transport or during storage to avoid corrosion.
Aus verschiedenen Versuchen hat sich herausgestellt, dass der Stahl wenigstens 10,5 % Chrom (Cr) aufweisen sollte, damit die Funkenentstehung bei einer Schleifgeschwindigkeit von 30-60 m/s nahezu vollständig verhindert werden kann. From various experiments, it has been found that the steel should have at least 10.5% chromium (Cr), so that sparking at a grinding speed of 30-60 m / s can be almost completely prevented.
Ferner hat sich herausgestellt, dass der Stahl einen Kohlenstoffanteil von 0,2-1,2 %, vorzugsweise von 0,8 % aufweisen sollte, damit der Stahl auf die erforderliche Härte von wenigstens 500 HV gehärtet werden kann. Furthermore, it has been found that the steel should have a carbon content of 0.2-1.2%, preferably 0.8%, so that the steel can be hardened to the required hardness of at least 500 HV.
Ferner hat es sich als vorteilhaft herausgestellt, wenn der Stahl einen Anteil von 0,2-1,0 %, vorzugsweise von 0,7 % Niob (Nb) aufweist. Niob ist ebenfalls ein Carbidbildner, welcher sich durch eine sehr schnelle Niobcarbidbildung auszeichnet, durch die die Entstehung von sehr großen Chromcarbiden verhindert werden kann. Aufgrund der insgesamt kleineren Carbide kann die Schneide des Schneidmessers dünner und schärfer angeschliffen werden, was wiederum Vorteile für die Qualität der Schnittfläche des Produktes bietet. Furthermore, it has proved to be advantageous if the steel has a proportion of 0.2-1.0%, preferably 0.7% niobium (Nb). Niobium is also a carbide former, which is characterized by a very rapid formation of niobium carbide, which can prevent the formation of very large chromium carbides. Due to the overall smaller Carbide the cutting edge of the cutting blade can be sharpened thinner and sharper, which in turn benefits the quality of the Cut surface of the product offers.
Weiter wird vorgeschlagen, dass der Stahl einen Anteil von 0,5-1,5 %, vorzugsweise von 1,1 %, Molybdän (Mo) aufweist. Durch das Molybdän werden weitere Sondercarbide gebildet, durch die die Standfestigkeit bzw. die Verschleißbeständigkeit des Schneidmessers weiter gesteigert werden kann. It is further proposed that the steel has a proportion of 0.5-1.5%, preferably 1.1%, of molybdenum (Mo). The molybdenum further special carbides are formed by the stability and wear resistance of the cutting blade can be further increased.
Eine weitere bevorzugte Ausführungsform der Erfindung kann darin gesehen werden, indem der Stahl einen Anteil von A further preferred embodiment of the invention can be seen therein in that the steel accounts for a share of
0,5-1,5 %, vorzugsweise von 0,9 %, Vanadium (V) aufweist. 0.5-1.5%, preferably 0.9%, vanadium (V).
Durch das Vanadium wird eine mögliche interkristalline Korrosion durch Carbidbildung verringert. Ferner wird durch das Vanadium ein Härteabfall des Schneidmessers bis zu einer Erwärmung des Schneidmessers bis zu einer Temperatur von 600 Grad verhindert, wodurch verhindert wird, dass die Härte des Vanadium reduces potential intergranular corrosion by carbide formation. Further, by the vanadium, a hardening drop of the cutting blade is prevented up to a heating of the cutting blade up to a temperature of 600 degrees, thereby preventing the hardness of the
Schneidmessers durch die durch das Schleifen bedingte Erwärmung wieder abnimmt. Diese verhinderte Härteabnahme führt wiederum zu einer Verlängerung der Standzeit des Schneidmessers. Cutting knife decreases due to the heating caused by the grinding again. This prevented hardness decrease in turn leads to an extension of the service life of the cutting blade.
Ferner wird zur Erzielung einer ausreichenden Verschleißbeständigkeit vorgeschlagen, dass das Schneidmesser eine Härte von wenigstens 400-700 HV, vorzugsweise von 600 HV, aufweist. Furthermore, to achieve sufficient wear resistance, it is proposed that the cutting blade has a hardness of at least 400-700 HV, preferably 600 HV.
Nachfolgend wird die Erfindung anhand eines bevorzugten Aus- führungsbeispiels näher erläutert. In der einzigen Figur ist zu erkennen: The invention will be explained in more detail below with reference to a preferred embodiment. In the only figure can be seen:
Fig.l: Messerträger einer Schneidvorrichtung einer Maschine zur Herstellung von Produkten der Tabak verarbeitenden Industrie mit erfindungsgemäßen Schneidmessern. Fig.l: blade carrier of a cutting device of a machine for the production of tobacco industry products with cutting knives according to the invention.
In der Figur l ist eine Schneidvorrichtung für eine Maschine zur Herstellung von Produkten der Tabak verarbeitenden Industrie mit einem in Rotation versetzbaren Messerträger 1 zu erkennen, an dem zwei Schneidmesser 2 und 3 eingespannt sind. Die Produkte der Tabak verarbeitenden Industrie können zum Beispiel Zigaretten, Zigarillos oder Filter sein, welche mittels der Schneidvorrichtung von einem zugeführten Strang in einer vorbestimmten Länge abgeschnitten werden. Dazu weist die Schneidvorrichtung zwei Schneidmesser 2 und 3 auf, welche an dem Messerträger 1 kardanisch aufgehängt sind, und während der Drehbewegung des Messerträgers 1 durch eine nicht dargestellte Mechanik eine Relativdrehbewegung zu dem Messerträger 1 ausführen. Ferner ist an der Schneidvorrichtung eine Schleifeinrichtung 4 mit einer über einen Elektromotor angetriebenen Schleifscheibe 5 angeordnet, an der die Schneidmesser 2 und 3 in regelmäßigen Abständen zum Schleifen vorbeigeführt werden. Die Schneidmesser 2 und 3 werden dabei mit einer sich durch die Rotationsgeschwindigkeiten des Messerträgers 1 und der Schleifscheibe 5 ergebenden Schleifgeschwindigkeit von 30- 60m/s geschliffen. In the figure l is a cutting device for a machine for the manufacture of products of the tobacco-processing industry with a rotatable blade carrier 1 to detect, are clamped on the two cutting blades 2 and 3. The products of the tobacco processing industry may be, for example, cigarettes, cigarillos or filters, which are cut by the cutting device from a supplied strand in a predetermined length. For this purpose, the cutting device on two cutting blades 2 and 3, which are gimbaled to the blade carrier 1, and perform during the rotational movement of the blade carrier 1 by a mechanism, not shown, a relative rotational movement to the blade carrier 1. Further, a grinding device 4 is arranged on the cutting device with a driven by an electric motor grinding wheel 5, on which the cutting blades 2 and 3 are guided past at regular intervals for grinding. The cutting blades 2 and 3 are thereby ground with a resulting from the rotational speeds of the blade carrier 1 and the grinding wheel 5 grinding speed of 30- 60m / s.
Zur Verminderung der beim Schleifen entstehenden Funken sind die Schneidmesser 2 und 3 erfindungsgemäß aus einem nichtrostenden martensitischen Stahl ausgebildet. Eine beispielhafte Stahlsorte ist z.B. unter der Materialnummer 1.4153.03 bekannt . In order to reduce the sparks generated during grinding, the cutting blades 2 and 3 according to the invention are formed from a stainless martensitic steel. An exemplary grade of steel is e.g. known under the material number 1.4153.03.
Der Stahl ist martensitisch, d.h. er weist einen Kohlenstoffanteil von 0,8 % auf, und kann dadurch auf eine Härte von größer als 400 HV vorzugsweise auf 600 HV gehärtet werden. Durch die dadurch erzielte Härte kann eine ausreichende Standfestigkeit bzw. Verschleißbeständigkeit erzielt werden, so dass die Anzahl der mit den Schneidmessern 2 und 3 geschnittenen Produkte zwischen den Wechselintervallen entsprechend groß ge- wählt werden kann. Ein ausreichender Martensitanteil in dem Stahl zur Erzielung der erforderlichen Härte kann dadurch erzielt werden, indem der Kohlenstoffanteil zwischen 0,2 und 1,2 % beträgt, wobei der Wert von 0,8 % sich als besonders vorteilhaft herausgestellt hat. Ferner ist der für die The steel is martensitic, ie it has a carbon content of 0.8%, and can thereby be cured to a hardness greater than 400 HV, preferably 600 HV. As a result of the hardness achieved in this way, sufficient stability or wear resistance can be achieved so that the number of products cut with the cutting blades 2 and 3 is correspondingly large between the replacement intervals. can be chosen. A sufficient martensite in the steel to achieve the required hardness can be achieved by having a carbon content of between 0.2 and 1.2%, with the value of 0.8% being found to be particularly advantageous. Furthermore, the for the
Schneidmesser 2 und 3 gewählte Stahl ein nichtrostender Stahl, was per Definition nach DIN EN 10 020 bedeutet, dass der Stahl einen Chromanteil von wenigstens 10,5 % aufweist. Dieser Cutting knives 2 and 3 selected steel a stainless steel, which by definition according to DIN EN 10 020 means that the steel has a chromium content of at least 10.5%. This
Chromanteil führt zu einer Verminderung der beim Schleifen entstehenden Funken, da durch das nicht brennbare Chrom die erforderliche Energie zur Bildung von Funken durch die beim Schleifen heraus gelösten Partikel erhöht wird. Chromium content leads to a reduction in the spark generated during grinding, since the non-combustible chromium increases the energy required to form sparks by the particles dissolved out during grinding.
Ferner führt die durch das Chrom bewirkte Carbidbildung zu einer weiteren Härtesteigerung, wodurch die Standzeit der Furthermore, caused by the chromium carbide formation leads to a further increase in hardness, whereby the life of the
Schneidmesser 2 und 3 weiter erhöht werden kann. Cutting knife 2 and 3 can be further increased.
Durch die Verwendung eines martensitischen nichtrostenden Stahls für die Schneidmesser 2und 3 kann demnach sowohl die erforderliche Verschleißbeständigkeit erzielt werden als auch die Funkenentstehung vermindert werden, so dass mit dem vorgeschlagenen Stahl die Eigenschaften der Schneidmesser 2 und 3 hinsichtlich beider Kriterien mit einfachen Mitteln verbessert werden können. Accordingly, by using a martensitic stainless steel for the cutting knives 2 and 3, both the required wear resistance and spark generation can be obtained, so that the proposed steel can improve the characteristics of the cutting knives 2 and 3 with respect to both criteria with simple means.
Ferner weist der Stahl der Schneidmesser 2 und 3 einen Anteil von 0,2-1,0 %, vorzugsweise von 0,7 %, Niob auf, so dass durch die schnelle Niobcarbidbildung die sich bildenden Chromcarbide kleiner sind. Die Schneidmesser 2 und 3 können durch die kleineren Chromcarbide feiner geschliffen werden, so dass die Schnittkante der Schneidmesser 2 und 3 schärfer ist, und die Schnittfläche der Produkte qualitativ verbessert wird. Ferner kann die Carbidbildung durch einen Legierungszusatz von 0,5-1,5 %, vorzugsweise von 1,1 %, Molybdän weiter verbessert werden. Molybdän ist ebenfalls ein sogenannter Sondercarbid- bildner, durch den bevorzugt Carbide kleinerer Größe mit den oben beschriebenen Vorteilen gebildet werden. Furthermore, the steel of the cutting blades 2 and 3 has a proportion of 0.2-1.0%, preferably 0.7%, of niobium, so that the rapid formation of niobium carbide causes the chromium carbides to be smaller. The cutting blades 2 and 3 can be finely ground by the smaller chromium carbides, so that the cutting edge of the cutting blades 2 and 3 is sharper, and the cut surface of the products is qualitatively improved. Further, carbide formation can be further enhanced by alloying 0.5-1.5%, preferably 1.1%, molybdenum. Molybdenum is also a so-called special carbide former, by which carbides of smaller size are preferably formed with the advantages described above.
Ferner kann der Werkstoff der Schneidmesser einen Anteil von 0,5-1,5 %, vorzugsweise von 0,9 %, Vanadium aufweisen, durch den ein wärmebedingter Härteabfall der Schneidmesser 2 und 3 verhindert werden kann. Da auch der Legierungsbestandteil Vanadium ein Carbidbildner ist, kann durch die Zugabe von Vanadium ein ähnlicher Vorteil wie durch die Zugabe von Niob oder Molybdän erzielt werden. Furthermore, the material of the cutting blade can have a proportion of 0.5-1.5%, preferably 0.9%, of vanadium, by means of which a heat-related hardening drop of the cutting blades 2 and 3 can be prevented. Since the alloying component vanadium is a carbide former, the addition of vanadium can achieve a similar advantage as the addition of niobium or molybdenum.
Die Härte der Schneidmesser 2 und 3 beträgt wenigstens 400-700 HV, vorzugsweise 600 HV, welche durch einen entsprechenden Martensitanteil und der darin eingelagerten Carbide eingestellt werden kann. The hardness of the cutting blades 2 and 3 is at least 400-700 HV, preferably 600 HV, which can be adjusted by a corresponding martensite part and the carbides incorporated therein.
Alternativ oder zusätzlich kann die Entstehung der Carbide durch eine gezielte Wärmebehandlung beeinflusst werden. Alternatively or additionally, the formation of the carbides can be influenced by a targeted heat treatment.

Claims

Ansprüche : Claims :
1. Schneidmesser (2,3) für eine Schneidvorrichtung in einer Maschine zur Herstellung von Produkten der Tabak verarbei tenden Industrie, dadurch gekennzeichnet, dass das 1. Cutting knife (2,3) for a cutting device in a machine for the production of products of the tobacco processing industry, characterized in that the
Schneidmesser (2,3) aus einem nichtrostenden martensiti- schen Stahl gebildet ist.  Cutting knife (2,3) is formed from a stainless martensitic steel.
2. Schneidmesser (2,3) nach Anspruch 1, dadurch gekennzeichnet, dass der Stahl wenigstens 10,5 % Chrom aufweist. 2. Cutting knife (2,3) according to claim 1, characterized in that the steel has at least 10.5% chromium.
3. Schneidmesser (2,3) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Stahl einen Kohlenstoffanteil von 0,2-1,2 %, vorzugsweise von 0,8 %, aufweist. 3. Cutting blade (2,3) according to claim 1 or 2, characterized in that the steel has a carbon content of 0.2-1.2%, preferably of 0.8%.
4. Schneidmesser (2,3) nach einem der vorangegangenen Ansprü che, dadurch gekennzeichnet, dass der Stahl einen Anteil von 0,2-1,0 %, vorzugsweise von 0,7 %, Niob aufweist. 4. Cutting blade (2,3) surface according to any one of the preceding and workman, characterized in that the steel has a proportion of 0.2-1.0%, preferably 0.7%, niobium.
5. Schneidmesser (2,3) nach einem der vorangegangenen Ansprü che, dadurch gekennzeichnet, dass der Stahl einen Anteil von 0,5-1,5 %, vorzugsweise von 1,1 %, Molybdän aufweist. 5. cutting blade (2,3) according to any one of the preceding and workman, characterized in that the steel has a proportion of 0.5-1.5%, preferably of 1.1%, molybdenum.
6. Schneidmesser (2,3) nach einem der vorangegangenen Ansprü che, dadurch gekennzeichnet, dass der Stahl einen Anteil von 0,5-1,5 %, vorzugsweise von 0,9 %, Vanadium aufweist. 6. cutting blade (2,3) surface according to any one of the preceding Ansprü, characterized in that the steel has a proportion of 0.5-1.5%, preferably of 0.9%, vanadium.
7. Schneidmesser (2,3) nach einem der vorangegangenen Ansprü che, dadurch gekennzeichnet, dass das Schneidmesser (2,3) eine Härte von wenigstens 400-700 HV, vorzugsweise von 60 HV, aufweist. 7. cutting blade (2,3) surface according to any one of the preceding and workman, characterized in that the cutting blade (2,3) has a hardness of at least 400-700 HV, preferably of 60 HV.
PCT/EP2011/000400 2010-02-24 2011-01-28 Blade for a cutting device in a machine for producing rod-shaped products in the tobacco processing industry WO2011103957A1 (en)

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PL11702583T PL2538809T3 (en) 2010-02-24 2011-01-28 Cutting device and cutting blade for cutting rod-shaped products of the tobacco processing industry
CN201180011132.9A CN102762119B (en) 2010-02-24 2011-01-28 The cutter for cutter sweep in producing the machine of rod-shaped objects of the tobacco industry
EP11702583.3A EP2538809B1 (en) 2010-02-24 2011-01-28 Cutting device and cutting blade for cutting rod-shaped products of the tobacco processing industry

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DE102010009154A DE102010009154A1 (en) 2010-02-24 2010-02-24 Cutting knife for a cutting device in a machine for producing rod-shaped products of the tobacco-processing industry

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DE102013226838A1 (en) * 2013-12-20 2015-06-25 Hauni Maschinenbau Ag Machine for the production of rod-shaped products of the tobacco-processing industry and cutting device for such a machine
CN105239009A (en) * 2015-09-06 2016-01-13 苏州市宝玛数控设备有限公司 Cutting bridge of cutting machine

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EP2538809B1 (en) 2017-09-06
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CN102762119B (en) 2016-08-03
CN102762119A (en) 2012-10-31
DE102010009154A1 (en) 2011-08-25

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