WO2012057642A1 - Blade assembly for a tobacco cutter - Google Patents

Blade assembly for a tobacco cutter Download PDF

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Publication number
WO2012057642A1
WO2012057642A1 PCT/PL2011/050043 PL2011050043W WO2012057642A1 WO 2012057642 A1 WO2012057642 A1 WO 2012057642A1 PL 2011050043 W PL2011050043 W PL 2011050043W WO 2012057642 A1 WO2012057642 A1 WO 2012057642A1
Authority
WO
WIPO (PCT)
Prior art keywords
blades
blade
blade assembly
cutting edge
assembly according
Prior art date
Application number
PCT/PL2011/050043
Other languages
French (fr)
Other versions
WO2012057642A4 (en
Inventor
Wojciech Chojnacki
Original Assignee
International Tobacco Machinery Poland Sp. Z O.O.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Tobacco Machinery Poland Sp. Z O.O. filed Critical International Tobacco Machinery Poland Sp. Z O.O.
Publication of WO2012057642A1 publication Critical patent/WO2012057642A1/en
Publication of WO2012057642A4 publication Critical patent/WO2012057642A4/en

Links

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
    • 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
    • B26D1/01—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 involving a cutting member which does not travel with the work
    • B26D1/12—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 involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—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 involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—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 involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/36—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 involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and rotating continuously in one direction during cutting, e.g. mounted on a rotary cylinder
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B7/00—Cutting tobacco
    • A24B7/04—Cutting tobacco by machines with revolving knives
    • A24B7/08—Cutting tobacco by machines with revolving knives with several knives which act one after the other
    • A24B7/12—Cutting tobacco by machines with revolving knives with several knives which act one after the other with cutter axes transverse to the feeding direction
    • 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
    • B26D1/01—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 involving a cutting member which does not travel with the work
    • B26D1/12—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 involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—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 involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/26—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 involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut
    • B26D1/28—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 involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut and rotating continuously in one direction during cutting

Definitions

  • the invention relates to a blade assembly (a knife) used on blade drums of the tobacco cutters .
  • the tobacco cutters equipped with blade drums with at least two blades are commonly used in the tobacco industry. Most commonly used are the blades having a linear cutting edge.
  • the blades having many collinear cutting edges shaped in such a way as to cut off the tobacco fibres of a predetermined length are also known.
  • the document WO85/004616 refers to cutting the tobacco fibres of a predetermined length and presents a design of a flat blade bevelled on one side comprising grooves made on the side opposite to the bevelled surface. Small protuberances located between each two adjacent grooves, cut off the fibres to a certain length, i.e. the groove width determines the maximum length of the fibres being cut off and the protuberances have a triangular or square cross section.
  • a side effect of using such a blade is the production of tobacco particles of the size proportional to the cross section of the protuberances .
  • the document WO95/007031 presents a cutter drum eguipped with knives of various thickness and various angular positions.
  • the drum is equipped with at least one knife comprising protuberances situated as in the previous document, on the side opposite to the blade bevelling, the protuberances having a triangular cross section and both ends of the blade being made as gripping parts which are flat on both sides.
  • the tobacco particles of the a size corresponding to the protuberance cross section are produced.
  • the object of the present invention is to design a knife for cutting tobacco fibres of a predetermined length in such a manner, that no tobacco particles are produced.
  • a blade assembly mounted on a tobacco cutter drum comprising a first slidable blade in the form of a flat plate, one surface of which being bevelled on the rim forming the first cutting edge, the blade assembly comprising at least two second blades, arranged along the cutting edge of the first blade on the side of its surface which is not bevelled, the position of the second blades being adapted for cutting the tobacco in a direction which is different to the cutting direction of the first cutting edge.
  • the second blades are preferably arranged substantially perpendicularly to the surface of the first blade.
  • the second blades may be arranged at equal distances.
  • the second blades are flat blades.
  • Each second blade may have a shape similar to a triangle, one apex of which lying in proximity of the cutting edge of the first blade.
  • the first blade and the second blades are mounted on the drum of the cutter via a common longitudinal mounting element, extending along the generatrix of the drum, the longitudinal mounting element having a C-shaped cross section with two flanges, the first blade being fixed in such a manner, that its flat unbevelled surface abuts one of the said flanges, and the second blades being arranged on the opposite side of the same flange and being adjacent to the respective internal angle of the mounting element, the other of the said flanges being mounted to the cutter drum.
  • the second blades may be replaceable blades.
  • the second blades are provided with a means for adjusting their position relative to the cutting edge of the first blade.
  • the first blade which is the main blade of the presented assembly, is a simple element in terms of technology.
  • the new function of the assembly according to the invention is achieved by adding new elements to the main blade.
  • Fig. 1 shows a perspective view of the blade assembly according to the invention mounted on a cutting drum of a tobacco cutter
  • FIG. 2 shows an embodiment of the blade assembly
  • Fig. 3 shows an embodiment of the blade assembly with adjustable transverse blades
  • Fig. 4 shows a view of the transverse blade from Fig.
  • the blade assembly shown in Fig. 1 comprises a slidable first blade 1. in the form of a flat plate, pressed in a generally known manner to the drum 3_ body by means of a plate _4. Moreover, the blade assembly comprises a plurality of second blades 2_, having cutting edges .5 spaced along the cutting edge 6 of the blade 1. In Fig. 1 a small recess is indicated (for the sake of clarity of the drawing) in order to show the edge 5 of one of the blades 2. The number of the blades 2 depends on the requirements related to a specific batch of the tobacco being cut.
  • the cutting edge 6 of the blade 1. is situated relative to the tobacco leaves conveyor such that it cuts off the tobacco fibres widthwise in the first direction that is transverse to the direction of feeding the leaves.
  • the cutting edges 5 of the blades 2 are situated so as to cut in a direction which is different to the first direction; the cutting edges 5 may be situated perpendicularly to the surface of the flat blade 1. In case of using the blades 2 made as flat blades, the surfaces of the blades 2 may also be situated perpendicularly to the surface of the flat blade 1.
  • the blades 2 shown in Fig. 2 are made in the form of a triangle, one of this triangle apexes lying in proximity to the cutting edge j.
  • the blades 2 are placed below the upper flange _ of the C-shaped bracket 1_ such that they fill up the internal angle of the bracket 1_, the bracket 1_ being situated along the generatrix of the cutter drum.
  • the blade 1 is pressed to the upper surface of the flange _9 by its unbevelled surface 1_1, the bracket 1_ itself being fixed by its lower flange 1_0 to the cutter drum body.
  • the presented embodiment is the simplest technical solution and it does not exhaust all the possibilities of embodiment of the second blades 2 ⁇ which may have e.g. arch-shaped cutting edges.
  • the blades _2 are placed within the space of the bracket 1_ having a C-shaped cross section (Fig. 2) and can be integrated with this bracket in any possible way, the distances between the blades 2 depending on the required maximum length of the fibres being cut off. Typically, they are mounted at equal distances.
  • Fig. 3 and 4 show the blade 2', the position of which with respect to the cutting edge 6 can be adjusted by using the pads 8 ⁇ .
  • the blade edge 2 position adjustment enables to choose the optimal cutting parameters.
  • Other ways of controlling the position of the blades 2_ with respect to the blade 1 are also possible.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
  • Manufacture Of Tobacco Products (AREA)

Abstract

A blade assembly mounted on a tobacco cutter drum, comprising a first slidable blade in the form of a flat plate, one surface of which being bevelled on the rim forming the first cutting edge, comprising at least two second blades (2) arranged along the cutting edge (6) of the first blade (1) on the side of its surface which is not bevelled, the position of the second blades (2) being adapted for cutting the tobacco in a direction different to the cutting direction of the first cutting edge (6).

Description

Blade assembly for a tobacco cutter
The invention relates to a blade assembly (a knife) used on blade drums of the tobacco cutters .
The tobacco cutters equipped with blade drums with at least two blades are commonly used in the tobacco industry. Most commonly used are the blades having a linear cutting edge. The blades having many collinear cutting edges shaped in such a way as to cut off the tobacco fibres of a predetermined length are also known.
The document WO85/004616 refers to cutting the tobacco fibres of a predetermined length and presents a design of a flat blade bevelled on one side comprising grooves made on the side opposite to the bevelled surface. Small protuberances located between each two adjacent grooves, cut off the fibres to a certain length, i.e. the groove width determines the maximum length of the fibres being cut off and the protuberances have a triangular or square cross section. A side effect of using such a blade is the production of tobacco particles of the size proportional to the cross section of the protuberances .
The document WO95/007031 presents a cutter drum eguipped with knives of various thickness and various angular positions. The drum is equipped with at least one knife comprising protuberances situated as in the previous document, on the side opposite to the blade bevelling, the protuberances having a triangular cross section and both ends of the blade being made as gripping parts which are flat on both sides. In this solution, similarly to the previous one, the tobacco particles of the a size corresponding to the protuberance cross section are produced.
The object of the present invention is to design a knife for cutting tobacco fibres of a predetermined length in such a manner, that no tobacco particles are produced.
According to the invention, there is provided a blade assembly mounted on a tobacco cutter drum, comprising a first slidable blade in the form of a flat plate, one surface of which being bevelled on the rim forming the first cutting edge, the blade assembly comprising at least two second blades, arranged along the cutting edge of the first blade on the side of its surface which is not bevelled, the position of the second blades being adapted for cutting the tobacco in a direction which is different to the cutting direction of the first cutting edge.
The second blades are preferably arranged substantially perpendicularly to the surface of the first blade.
The second blades may be arranged at equal distances.
Preferably, the second blades are flat blades.
Each second blade may have a shape similar to a triangle, one apex of which lying in proximity of the cutting edge of the first blade.
In a preferred variant of the blade assembly, the first blade and the second blades are mounted on the drum of the cutter via a common longitudinal mounting element, extending along the generatrix of the drum, the longitudinal mounting element having a C-shaped cross section with two flanges, the first blade being fixed in such a manner, that its flat unbevelled surface abuts one of the said flanges, and the second blades being arranged on the opposite side of the same flange and being adjacent to the respective internal angle of the mounting element, the other of the said flanges being mounted to the cutter drum.
The second blades may be replaceable blades.
Preferably, the second blades are provided with a means for adjusting their position relative to the cutting edge of the first blade. The first blade, which is the main blade of the presented assembly, is a simple element in terms of technology. The new function of the assembly according to the invention is achieved by adding new elements to the main blade. Surprisingly, it was found that each of the cutting blades of the transverse blades (second blades) of the blade assembly separates two adjacent fibres in such a manner that no disadvantageous tobacco particles are being produced.
The object of the invention is presented by way of non- limiting example in the drawing, in which: Fig. 1 shows a perspective view of the blade assembly according to the invention mounted on a cutting drum of a tobacco cutter; Fig.
2 shows an embodiment of the blade assembly; Fig. 3 shows an embodiment of the blade assembly with adjustable transverse blades; Fig. 4 shows a view of the transverse blade from Fig.
3.
The blade assembly shown in Fig. 1 comprises a slidable first blade 1. in the form of a flat plate, pressed in a generally known manner to the drum 3_ body by means of a plate _4. Moreover, the blade assembly comprises a plurality of second blades 2_, having cutting edges .5 spaced along the cutting edge 6 of the blade 1. In Fig. 1 a small recess is indicated (for the sake of clarity of the drawing) in order to show the edge 5 of one of the blades 2. The number of the blades 2 depends on the requirements related to a specific batch of the tobacco being cut. The cutting edge 6 of the blade 1. is situated relative to the tobacco leaves conveyor such that it cuts off the tobacco fibres widthwise in the first direction that is transverse to the direction of feeding the leaves. The cutting edges 5 of the blades 2 are situated so as to cut in a direction which is different to the first direction; the cutting edges 5 may be situated perpendicularly to the surface of the flat blade 1. In case of using the blades 2 made as flat blades, the surfaces of the blades 2 may also be situated perpendicularly to the surface of the flat blade 1. The blades 2 shown in Fig. 2 are made in the form of a triangle, one of this triangle apexes lying in proximity to the cutting edge j. The blades 2 are placed below the upper flange _ of the C-shaped bracket 1_ such that they fill up the internal angle of the bracket 1_, the bracket 1_ being situated along the generatrix of the cutter drum. The blade 1 is pressed to the upper surface of the flange _9 by its unbevelled surface 1_1, the bracket 1_ itself being fixed by its lower flange 1_0 to the cutter drum body. The presented embodiment is the simplest technical solution and it does not exhaust all the possibilities of embodiment of the second blades 2^ which may have e.g. arch-shaped cutting edges.
In the presented solution, the blades _2 are placed within the space of the bracket 1_ having a C-shaped cross section (Fig. 2) and can be integrated with this bracket in any possible way, the distances between the blades 2 depending on the required maximum length of the fibres being cut off. Typically, they are mounted at equal distances.
Fig. 3 and 4 show the blade 2', the position of which with respect to the cutting edge 6 can be adjusted by using the pads 8^. The blade edge 2 position adjustment enables to choose the optimal cutting parameters. Other ways of controlling the position of the blades 2_ with respect to the blade 1 are also possible.
During operation of the cutter, subsequent blade assemblies are cutting the fibres off the supplied tobacco leaves, the fibres being cut off widthwise by the blades 1. and lengthwise by the blades 2. In case of both blades, there are cutting edges .5 and _6 which are cutting the fibres off in a wasteless manner, i.e. no particles of tobacco are produced.

Claims

Patent claims
1. A blade assembly mounted on a tobacco cutter drum, comprising a first slidable blade in the form of a flat plate one surface of which being bevelled on the rim forming the first cutting edge, characterised in that it comprises at least two second blades {2) , arranged along the cutting edge (_6) of the first blade (1) on the side of its surface which is not bevelled, the position of the second blades {2) being adapted for cutting the tobacco in a direction which is different to the cutting direction of the first cutting edge ( j) .
2. The blade assembly according to claim 1, characterised in that the second blades (2) are arranged substantially perpendicularly to the surface of the first blade (1) .
3. The blade assembly according to claim 1 or 2, characterised in that the second blades (2) are arranged at equal distances .
4. The blade assembly according to claim 1, characterised in that the second blades (2) are flat blades.
5. The blade assembly according to claim 3, characterised in that each second blade (2) has a shape similar to a triangle one apex of which lies in proximity of the cutting edge (6) of the first blade (1) .
6. The blade assembly according to claim 4, characterised in that the first blade (1) and the second blades (2) are mounted on the drum (.3) of the cutter via a common longitudinal mounting element (7_) extending along the generatrix of the drum (.3) , the longitudinal mounting element (_7) having a C-shaped cross section with two flanges (_9, 1_0) , the first blade (1) being fixed in such a manner that its flat unbevelled surface (JJL) abuts one flange , the second blades (2^) being arranged on the opposite side of the same flange and are adjacent to the respective internal angle of the mounting element (7_) , the other flange (ΚΠ being mounted to the cutter drum.
7. The blade assembly according to any of claims 1 to 5, characterised in that the second blades (2) are replaceable blades .
8. The blade assembly according to any of claims 1 to 6, characterised in that the second blades (2) are provided with means for adjusting their position relative to the cutting edge (6) .
PCT/PL2011/050043 2010-10-29 2011-10-28 Blade assembly for a tobacco cutter WO2012057642A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL392804A PL392804A1 (en) 2010-10-29 2010-10-29 Knife set for the tobacco cutter
PL392804 2010-10-29

Publications (2)

Publication Number Publication Date
WO2012057642A1 true WO2012057642A1 (en) 2012-05-03
WO2012057642A4 WO2012057642A4 (en) 2012-06-07

Family

ID=45094190

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2011/050043 WO2012057642A1 (en) 2010-10-29 2011-10-28 Blade assembly for a tobacco cutter

Country Status (2)

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PL (1) PL392804A1 (en)
WO (1) WO2012057642A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104544537A (en) * 2013-10-11 2015-04-29 豪尼机械制造股份公司 Tobacco cutting unit and cutting knife for a tobacco cutting unit

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985004616A1 (en) 1984-04-09 1985-10-24 Amf Incorporated Improvements in knives in cutting machines
WO1995007031A1 (en) 1993-09-07 1995-03-16 Fabriques De Tabac Reunies Sa Rotary cutter
US6595216B1 (en) * 2001-03-20 2003-07-22 Brown & Williamson Tobacco Corporation Method of cutting sheets of reconstituted tobacco
WO2004052127A1 (en) * 2002-12-12 2004-06-24 International Tobacco Machinery Poland Ltd. Cutting machine for organic plant materials, especially for tobacco
EP1477074A1 (en) * 2003-05-16 2004-11-17 Hauni Maschinenbau AG Method for separating tobacco from a block of tobacco and device for performing the method
WO2011057726A2 (en) * 2009-11-12 2011-05-19 Hauni Maschinenbau Ag Cutting blade of a tobacco cutter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985004616A1 (en) 1984-04-09 1985-10-24 Amf Incorporated Improvements in knives in cutting machines
WO1995007031A1 (en) 1993-09-07 1995-03-16 Fabriques De Tabac Reunies Sa Rotary cutter
US6595216B1 (en) * 2001-03-20 2003-07-22 Brown & Williamson Tobacco Corporation Method of cutting sheets of reconstituted tobacco
WO2004052127A1 (en) * 2002-12-12 2004-06-24 International Tobacco Machinery Poland Ltd. Cutting machine for organic plant materials, especially for tobacco
EP1477074A1 (en) * 2003-05-16 2004-11-17 Hauni Maschinenbau AG Method for separating tobacco from a block of tobacco and device for performing the method
WO2011057726A2 (en) * 2009-11-12 2011-05-19 Hauni Maschinenbau Ag Cutting blade of a tobacco cutter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104544537A (en) * 2013-10-11 2015-04-29 豪尼机械制造股份公司 Tobacco cutting unit and cutting knife for a tobacco cutting unit

Also Published As

Publication number Publication date
PL392804A1 (en) 2012-05-07
WO2012057642A4 (en) 2012-06-07

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