EP2538809A1 - Schneidmesser für eine schneidvorrichtung in einer maschine zur herstellung von stabförmigen produkten der tabak verarbeitenden industrie - Google Patents
Schneidmesser für eine schneidvorrichtung in einer maschine zur herstellung von stabförmigen produkten der tabak verarbeitenden industrieInfo
- Publication number
- EP2538809A1 EP2538809A1 EP11702583A EP11702583A EP2538809A1 EP 2538809 A1 EP2538809 A1 EP 2538809A1 EP 11702583 A EP11702583 A EP 11702583A EP 11702583 A EP11702583 A EP 11702583A EP 2538809 A1 EP2538809 A1 EP 2538809A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- steel
- blade
- machine
- cutting blade
- 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.)
- Granted
Links
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)
- Manufacturing Of Cigar And Cigarette Tobacco (AREA)
- Crushing And Pulverization Processes (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL11702583T PL2538809T3 (pl) | 2010-02-24 | 2011-01-28 | Nóż tnący dla urządzenia tnącego w maszynie do wytwarzania sztabkowych produktów przemysłu przetwórstwa tytoniu |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010009154A DE102010009154A1 (de) | 2010-02-24 | 2010-02-24 | Schneidmesser für eine Schneidvorrichtung in einer Maschine zur Herstellung von stabförmigen Produkten der Tabak verarbeitenden Industrie |
| PCT/EP2011/000400 WO2011103957A1 (de) | 2010-02-24 | 2011-01-28 | Schneidmesser für eine schneidvorrichtung in einer maschine zur herstellung von stabförmigen produkten der tabak verarbeitenden industrie |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2538809A1 true EP2538809A1 (de) | 2013-01-02 |
| EP2538809B1 EP2538809B1 (de) | 2017-09-06 |
Family
ID=44204578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11702583.3A Active EP2538809B1 (de) | 2010-02-24 | 2011-01-28 | Schneidmesser für eine schneidvorrichtung in einer maschine zur herstellung von stabförmigen produkten der tabak verarbeitenden industrie |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2538809B1 (de) |
| CN (1) | CN102762119B (de) |
| DE (1) | DE102010009154A1 (de) |
| PL (1) | PL2538809T3 (de) |
| WO (1) | WO2011103957A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143993B (zh) * | 2013-04-03 | 2015-01-21 | 湖南大学 | 一种可调式高速动态跟随切割刀片刃磨和鐾刀装置 |
| DE102013226838A1 (de) * | 2013-12-20 | 2015-06-25 | Hauni Maschinenbau Ag | Maschine zur Herstellung von stabförmigen Produkten der Tabak verarbeitenden Industrie und Schneidvorrichtung für eine derartige Maschine |
| CN105239009A (zh) * | 2015-09-06 | 2016-01-13 | 苏州市宝玛数控设备有限公司 | 一种切割机切割桥 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4343222A1 (de) | 1993-12-17 | 1995-06-29 | Johannes Prof Dr Rer N Gartzen | Messerscheibe |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE301656B (de) * | 1967-06-30 | 1968-06-17 | Sandvikens Jernverks Ab | |
| SE404029B (sv) * | 1968-05-31 | 1978-09-18 | Uddeholms Ab | Forfarande for framstellning av emnen for tunna eggverktyg av herdat stal |
| SE330707C (sv) * | 1969-04-22 | 1973-01-15 | Uddeholms Ab | Sätt att förbättra segheten hos martensitiska, lufthärdande stål |
| DE2241775A1 (de) * | 1972-08-25 | 1974-03-07 | Hauni Werke Koerber & Co Kg | Schneidvorrichtung an strangmaschinen der tabakverarbeitenden industrie |
| DE2535116A1 (de) * | 1975-08-06 | 1977-02-24 | Hauni Werke Koerber & Co Kg | Messer zum schneiden strang- oder stabfoermiger artikel der tabakverarbeitenden industrie |
| US4503866A (en) | 1981-04-28 | 1985-03-12 | Molins Plc | Cigarette or filter rod cut-off device |
| SE520169C2 (sv) * | 1999-08-23 | 2003-06-03 | Sandvik Ab | Metod för tillverkning av stålprodukter av utskiljningshärdat martensitiskt stål, samt användning av dessa stålprodukter |
| US6273973B1 (en) * | 1999-12-02 | 2001-08-14 | Ati Properties, Inc. | Steelmaking process |
| DE10227218A1 (de) | 2002-06-18 | 2004-01-08 | Focke & Co (Gmbh & Co) | Vorrichtung zum Durchtrennen eines Tabakstrangs |
-
2010
- 2010-02-24 DE DE102010009154A patent/DE102010009154A1/de not_active Ceased
-
2011
- 2011-01-28 EP EP11702583.3A patent/EP2538809B1/de active Active
- 2011-01-28 WO PCT/EP2011/000400 patent/WO2011103957A1/de not_active Ceased
- 2011-01-28 PL PL11702583T patent/PL2538809T3/pl unknown
- 2011-01-28 CN CN201180011132.9A patent/CN102762119B/zh active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4343222A1 (de) | 1993-12-17 | 1995-06-29 | Johannes Prof Dr Rer N Gartzen | Messerscheibe |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2011103957A1 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011103957A1 (de) | 2011-09-01 |
| EP2538809B1 (de) | 2017-09-06 |
| DE102010009154A1 (de) | 2011-08-25 |
| CN102762119A (zh) | 2012-10-31 |
| PL2538809T3 (pl) | 2018-02-28 |
| CN102762119B (zh) | 2016-08-03 |
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