WO2014140968A1 - Mécanisme de longeron pour machines de fabrication de tige - Google Patents

Mécanisme de longeron pour machines de fabrication de tige Download PDF

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Publication number
WO2014140968A1
WO2014140968A1 PCT/IB2014/059149 IB2014059149W WO2014140968A1 WO 2014140968 A1 WO2014140968 A1 WO 2014140968A1 IB 2014059149 W IB2014059149 W IB 2014059149W WO 2014140968 A1 WO2014140968 A1 WO 2014140968A1
Authority
WO
WIPO (PCT)
Prior art keywords
connecting member
ledger
gear
pivot
gear arrangement
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.)
Ceased
Application number
PCT/IB2014/059149
Other languages
English (en)
Inventor
Jeroen Van Aert
Gerard Van Den Berg
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.)
International Tobacco Machinery Poland Sp zoo
Original Assignee
International Tobacco Machinery Poland Sp zoo
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 zoo filed Critical International Tobacco Machinery Poland Sp zoo
Publication of WO2014140968A1 publication Critical patent/WO2014140968A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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

  • the object of the invention is a ledger mechanism for rod making machines in tobacco industry.
  • rod making machines i.e. cigarette making machines and filter making machines (also combined filter making machines).
  • Continuous tobacco or filter rods are cut into discrete lengths (rods) by a cut-off device.
  • Cutting off is realized by means of a rotary cutting head with knives positioned on its periphery, whereas the axis of rotation of the cutting head is arranged at an angle with relation to a horizontal plane.
  • Inclining the cutting head provides a horizontal speed component of the knife parallel to the rod movement, the horizontal speed component of the knife should be equal to the speed of the rod being cut while cutting in order to enable proper cutting a continuous moving rod.
  • the ledger is positioned on a connecting member the ends of which are pivotally joined with the external gears at points on the pitch diameter of the gears, due to which the ledger makes linear horizontal reciprocating movement.
  • the disadvantage of the solution is that the ledger is situated between the gear arrangements or its pivotal joints and it is difficult to arrange a cutting head as far as the space factor is concerned.
  • the purpose of the present invention is developing a ledger mechanism which can be used at very high speed of a continuous rod of about 600m/min.
  • the invention concerns improvements in such a mechanism.
  • the object of the invention is a ledger mechanism for rod making machines of tobacco industry comprising a first gear arrangement having a first pivot for performing reciprocating movement and a second gear arrangement having a second pivot for performing reciprocating movement, and a connecting member mounted to the pivots of the first and second gear arrangement, and a ledger with cutting tubes mounted to a connecting member, first pivot gear and second pivot gear are mechanically coupled with each other.
  • a ledger mechanism is characterized in that a connecting member is longer than a distance between the axes of the first and second pivot, and a ledger with cutting tubes is located at the connecting member outside the inner part of connecting member delimited by axes of the first and second pivot of the first and second gear arrangement.
  • a ledger mechanism is characterized in that the distance between the axis of the connecting member and the axis of the second pivot is bigger than the distance between axis of the connecting member and the first pivot.
  • a ledger mechanism is characterized in that the axis of the connecting member crosses the axis of the first pivot of the first gear arrangement.
  • a ledger mechanism is characterized in that the connecting member and the second gear arrangement are connected resiliency.
  • a ledger mechanism is characterized in that the resilient joint is a flat spring.
  • a ledger mechanism is characterized in that the connecting member and the second gear arrangement are connected with a slide bearing.
  • a ledger mechanism is characterized in that the first gear arrangement is the drive gear.
  • a ledger mechanism is characterized in that the second gear arrangement is the drive gear.
  • a ledger mechanism is characterized in that a ledger with cutting tubes is located on the end part of the connecting member.
  • Fig. 1 shows schematically a kinematics diagram of a hypocycloid gear arrangement
  • Fig. 2 shows a kinematics diagram of two gear arrangements shown in Fig. 1 in one position
  • Fig. 3 shows a kinematics diagram of two gear arrangements shown in Fig. 1 in a second position
  • Fig. 4a shows a kinematics diagram of two gear arrangements in another embodiment
  • Fig. 4b shows a kinematics diagram of two gear arrangements in another embodiment
  • Fig. 5 shows a kinematics diagram of two gear arrangements in another embodiment
  • Fig. 6 shows an embodiment of a ledger mechanism according to the invention
  • Fig. 7 shows a cross-section of a ledger mechanism of fig. 6
  • Fig. 8 shows a supporting member of for a connecting member
  • Fig. 9 shows another supporting member for a connecting member.
  • a gear arrangement 12 being a hypocycloid gear arrangement applied in the invention comprises a fixed ring gear 10 and an orbiting gear 1 1 which are presented schematically in fig. 1 .
  • the orbiting gear 1 1 orbits around the centre C of the fixed ring gear 10 and while orbiting rotates around its centre M.
  • the second gear arrangement 12 presents schematically two gear arrangements, the first gear arrangement 12' and the second gear arrangement 12 comprising fixed and orbiting gears respectively 10, 1 1 and 10', 1 1 ' staying in mesh at points R, R'.
  • the first pivot is arranged at point N' of the first gear arrangement 12' and the second pivot is arranged at point N of the second gear arrangement 12. Due to such an arrangement the connecting member follows the movements of the points N, N' and makes horizontal linear movement and can be used for supporting a ledger 14 with cutting tubes for cutting a continuous rod of tobacco industry i.e.
  • the linear movement of the connecting member may be realized by turning the orbiting gears 1 1 , 1 1 ' in one direction i.e. both clockwise or anticlockwise in the plane of the drawing or in opposite directions.
  • the movements of the gears 1 1 , 1 1 ' may be synchronized by means of e.g. a pair of gears not shown in this diagram, it may also be realized by means of a gear train.
  • the gear 1 1 orbits anticlockwise and the gear 1 1 ' orbits clockwise.
  • the gears 1 1 , 1 1 ' and both the points N, N' and the points R, R' all take up rightmost position, the points N and R overlap and the points N' and R' overlap as well.
  • the mechanism is shown after the gears 1 1 , 1 1 ' have made orbiting movement and their centers have made certain angular movement with reference to the points C, C, the connecting member 13 has started its movement to the left side in the drawing.
  • Fig. 4 shows a schematic illustration of an embodiment of a mechanism according to the invention. It comprises two gear arrangements 12, 12' comprising respectively both fixed and orbiting gears 10, 1 1 and 10', 1 1 ' and a connecting member 13'. The point N' of the movable gear 1 1 ' lies on the axis of the connecting member 13'.
  • the center C of the gear 10' also lies on the axis of the connecting member 13'.
  • the center C of the ring gear 10 lies below the axis of the connecting member 13'.
  • the point N lies below the axis of the connecting member 13' and there is applied a supporting member 15 for supporting the connecting member 13' at point T resiliently, flexibly or in general not rigidly.
  • the connecting member is not intended to be driven by the second gear, the function of the second gear arrangement is to support the connecting member rather than to provide a driving force.
  • the supporting member may also be designed as a flexible member like a flat spring.
  • the connecting member is longer than the distance between the pivots at the points N, N' of the both gear arrangements.
  • a ledger 14 At the end 13A of the connecting member 13' i.e. outside an inner part 13B there be may be positioned a ledger 14.
  • the inner part 13B of the connecting member 13' is the part located between the pivots at the points N and N'. Both the point N and the point N' reciprocate horizontally the same way but the pivot arranged at the point N' is the driving element for the connecting member 13' and the ledger 14.
  • the pivot at the point N is used to support the connecting member 13', it is synchronized with and follows the horizontal reciprocating movement of the pivot at the point N', the synchronization may be realized by e.g. a pair of gears (not shown). In fig.
  • FIG. 4b a similar embodiment is presented.
  • the connecting member 13' is situated slightly higher with reference to centers C and C, the distance between the center C and the axis of the connecting member 13' which is equal to the distance between a pivot at point N and the axis of the connecting member 13' equals to dl
  • the distance between the center C and the axis of the connecting member 13' which is equal to the distance between a pivot at point N' and the axis of the connecting member 13' equals to d2
  • d1 is bigger than d2.
  • fig. 5 there is another embodiment of the mechanism shown schematically.
  • a front view (without a cover and with partial cross section) of the embodiment of a ledger mechanism according to the present invention comprising two gear arrangements 12, 12' and in fig. 7 there is shown a cross-section A-A of the gear arrangements 12, 12' of fig. 6.
  • the gear arrangement 12 there is a main shaft 30 rotary mounted in a housing 34 by means of two bearings 32 and 33, the main shaft 30 having its rotation axis XC.
  • the rotation axis XC is also the axis of a fixed ring gear 10.
  • the rotation axis XC corresponds to the center C of the fixed ring gear 10 in fig. 4.
  • crank shaft 36 In the main shaft 30 there is a crank shaft 36 rotary mounted in the main shaft 30 by means of two bearings 37 and 38, the crank shaft 36 having its rotation axis XM.
  • the rotation axis XM corresponds to the center M of the orbiting gear in fig. 4.
  • On the crank shaft 36 there is fixed an orbiting gear 1 1 On the crank shaft 36 there is fixed an orbiting gear 1 1 , whereas the axis of the orbiting gear 1 1 overlaps the crank shaft rotation axis XM.
  • the orbiting gear 1 1 meshes with the fixed ring gear 10 mounted in the housing 34, the point of meshing is marked with the annotation R.
  • the crank shaft 36 is provided with a crank pin 44 having an axis XN which corresponds to the point N in fig. 4, at which there is a pivot P.
  • the crank pin 44, the bearings 45 and 46 and the supporting member 57 constitute
  • the gear arrangement 12' is designed similarly.
  • the gear arrangement 12' there is a main shaft 30' rotary mounted in the housing 34 by means of two bearings 32' and 33', the main shaft 30' having its rotation axis XC.
  • the rotation axis XC corresponds to the center C of the fixed ring gear 10' in fig. 4.
  • the crank shaft 36' In the main shaft 30' there is a crank shaft 36' rotary mounted in the main shaft 30' by means of two bearings 37' and 38', the crank shaft 36' having its rotation axis XM'.
  • the rotation axis XM' corresponds to the center M' of the movable gear in fig. 4.
  • crank shaft 36' On the crank shaft there is fixed an orbiting gear 1 1 ', whereas the axis of the orbiting gear 1 1 ' overlaps the crank shaft rotation axis XM'.
  • the orbiting gear 11 ' meshes with the fixed ring gear 10' mounted in the housing 34, the point of meshing is marked with the annotation R'.
  • the crank shaft 36' is provided with a crank pin 44' having an axis XN' which corresponds to the point N' in fig. 4, at which there is a pivot P'.
  • a bearing housing 47 fixed to a connecting member 13' there are mounted two bearings 48 and 49 fixed on the crank pin 44'.
  • the bearing housing 47, the bearings 48 and 49 and the pin 44' constitute the pivot P'.
  • the crank pin 44' rotates while the gear arrangement 12' operates and the bearing housing 47 fixed to the connecting member 13' makes linear reciprocating movement parallel to the direction of movement of the continuous rod CR and drives this way the connecting member 13'.
  • the connecting member also realizes the function of supporting a ledger 14.
  • the connecting member 13 is longer than the distance between the pivots P and P'.
  • the ledger 14 having cutting tubes 52 is mounted at the end of a connecting member 13' (fig. 6).
  • the inner part 13B of the connecting member 13' is located between the pivots P and P'.
  • the continuous rod CR is situated close above the connecting member 13' which is possible due to the arrangement of the gear arrangements 12 and 12' and the connecting member 13'.
  • the axis 56 of the connecting member 13' lies horizontally and crosses the axis XN' in the gear arrangement 12'.
  • the axis XN of the gear arrangement 12 lies below the connecting member 13.
  • the supporting member 57 is designed to join the connecting member 13' with the pivot P.
  • the crank pin 44 rotates while the gear arrangement 12 operates and the supporting member 57 makes linear reciprocating movement parallel to the direction of movement of the continuous rod CR.
  • the supporting member 57 comprises two flat springs 57A and a mount 57B which is fixed to the connecting member 13' (fig. 8), it may be glued or screwed to the connecting member 13'. In case compressive or tensile tensions appear in the connecting member 13' the flat springs 57A will bent slightly.
  • the ledger 14 is not situated between the pivots P, P' of the gear arrangements 12, 12' but outside of the pivots P, P'.
  • the supporting member 57 comprising the flat springs 57A and the mount 57B may be replaced with a housing 58 (fig. 9) which is rigid and in which there is placed a slide linear bearing 59 for the connecting member 13'.
  • the ledger mechanism is driven by a motor which is not shown in the drawing, the motor drives a pinion 61 which stays in mesh with a gear 62 mounted fixedly on the shaft 30'.
  • the pinion 61 is designed to be easily detachable from the motor.
  • On the shaft 30' there is also fixedly mounted a gear 63 which stays in mesh with a gear 64 of the same pitch diameter fixedly mounted on the shaft 30. Due to the drive train both the gear arrangements 12 and 12' rotate in opposite directions at the same rotational speed. Both the pivots P and P' make the same reciprocating movements thanks to which the connecting member 13' together with the ledger 14 and the cutting tubes 52 also make the reciprocating movement needed for proper cutting a continuous rod on a rod making machine of tobacco industry.
  • the advantage of the ledger mechanism according to the invention is a combination of small dimensions of the mechanism and low level of noise. Furthermore the ledger with the cutting tubes lies outside the gear arrangements. In practice the ledger mechanism is easily exchangeable so the time needed for setting a new length of cutting is very short. It can be realized by unscrewing the housing with a mechanism and replacing it with a housing comprising a mechanism for a new length of cutting.

Landscapes

  • Confectionery (AREA)
  • Harvesting Machines For Specific Crops (AREA)
  • Transmission Devices (AREA)

Abstract

La présente invention concerne un mécanisme de longeron pour machines de fabrication de tige de l'industrie du tabac, comprenant un premier agencement d'engrenages (12') ayant un premier pivot (Ρ') pour exécuter un mouvement alternatif, et un second agencement d'engrenages (12) ayant un second pivot (Ρ') pour exécuter un mouvement alternatif, et un élément de raccordement (13') monté sur les pivots des premier et second agencements d'engrenages, et un longeron (14) ayant des tubes de coupe (52) montés sur un élément de raccordement (13'), le premier pivot (Ρ') et le second pivot (P) sont accouplés mécaniquement l'un à l'autre. Le mécanisme de longeron est caractérisé par le fait qu'un élément de raccordement (13') est plus long qu'une distance entre les axes des premier et second pivots (P, P'), et un longeron (14) ayant des tubes de coupe (52) est placé sur l'élément de raccordement (13') à l'extérieur de la partie intérieure (13B) de l'élément de raccordement (13') et délimité par les axes des premier et second pivots (P, P') des premier et second agencements d'engrenages (12, 12').
PCT/IB2014/059149 2013-03-11 2014-02-21 Mécanisme de longeron pour machines de fabrication de tige Ceased WO2014140968A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL403076A PL229004B1 (pl) 2013-03-11 2013-03-11 Mechanizm prowadnicy cięcia maszyny wytwarzającej sztabki
PLPL403076 2013-03-11

Publications (1)

Publication Number Publication Date
WO2014140968A1 true WO2014140968A1 (fr) 2014-09-18

Family

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PCT/IB2014/059149 Ceased WO2014140968A1 (fr) 2013-03-11 2014-02-21 Mécanisme de longeron pour machines de fabrication de tige

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PL (1) PL229004B1 (fr)
WO (1) WO2014140968A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2233064A1 (de) * 1972-07-06 1974-01-24 Hauni Werke Koerber & Co Kg Schneidvorrichtung einer strangmaschine der tabakverarbeitenden industrie
US3995519A (en) * 1970-10-20 1976-12-07 Molins Limited Rod-making machines
GB2108820A (en) 1981-11-05 1983-05-25 Molins Plc Ledger for cut-off devices in cigarette machines
US4444210A (en) 1980-11-26 1984-04-24 Hauni-Werke Korber & Co. Kg. Apparatus for reciprocating the rod guide in the cutoff of a cigarette rod making or like machine
WO1998004161A1 (fr) * 1996-07-25 1998-02-05 Molins Plc Butee pour dispositif de decoupe de confectionneuse de cigarettes
EP1108367A2 (fr) * 1999-12-18 2001-06-20 Hauni Maschinenbau AG Procédé et dispositif pour couper au moins une tige continue mobile dans l'industrie du tabac

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995519A (en) * 1970-10-20 1976-12-07 Molins Limited Rod-making machines
DE2233064A1 (de) * 1972-07-06 1974-01-24 Hauni Werke Koerber & Co Kg Schneidvorrichtung einer strangmaschine der tabakverarbeitenden industrie
US4444210A (en) 1980-11-26 1984-04-24 Hauni-Werke Korber & Co. Kg. Apparatus for reciprocating the rod guide in the cutoff of a cigarette rod making or like machine
GB2108820A (en) 1981-11-05 1983-05-25 Molins Plc Ledger for cut-off devices in cigarette machines
WO1998004161A1 (fr) * 1996-07-25 1998-02-05 Molins Plc Butee pour dispositif de decoupe de confectionneuse de cigarettes
US6478031B1 (en) 1996-07-25 2002-11-12 Molins Plc Ledger for cigarette making machine cut-off
EP1108367A2 (fr) * 1999-12-18 2001-06-20 Hauni Maschinenbau AG Procédé et dispositif pour couper au moins une tige continue mobile dans l'industrie du tabac

Also Published As

Publication number Publication date
PL403076A1 (pl) 2014-09-15
PL229004B1 (pl) 2018-05-30

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