US3563249A - Method and apparatus for manufacturing continuous strands of a pourable material such as shredded tobacco - Google Patents

Method and apparatus for manufacturing continuous strands of a pourable material such as shredded tobacco Download PDF

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Publication number
US3563249A
US3563249A US746152A US3563249DA US3563249A US 3563249 A US3563249 A US 3563249A US 746152 A US746152 A US 746152A US 3563249D A US3563249D A US 3563249DA US 3563249 A US3563249 A US 3563249A
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United States
Prior art keywords
suction
subsidiary
conduits
wheel
stream
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Expired - Lifetime
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US746152A
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English (en)
Inventor
Herbert Geyer
Johannes Herrmann
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TABAK und INDUSTRIEMASCHINEN V
VEB TABAK-UND INDUSTRIEMASCHINEN
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TABAK und INDUSTRIEMASCHINEN V
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    • 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
    • A24C5/18—Forming the rod

Definitions

  • a tobacco feeding arrangement delivers the material initially into the inlet end of an elongated suction conduit in which the stream of fibrous material is divided into subsidiary streams and delivered to a transfer location from where the material flows into engagement with the perforated peripheral wall of a rotary suction wheel.
  • the initial suction stream terminates at this transfer location, while a second suction stream is applied through the suction wheel to draw the material against the periphery thereof.
  • the several subsidiary suction conduits have a direction of flow which cuts across the periphery of the suction wheel at a predetermined angle providing for movement-free, layered deposition of the several subsidiary streams onto the periphery of the suction wheel with the several streams being distributed one behind the other along the periphery of the suction wheel.
  • the cross section of each of the several subsidiary suction conduits gradually diminishes to the width of the suction wheel while each subsidiary conduit has a circumferential length several times greater than its minimum width.
  • the present invention relates to a method and apparatus for manufacturing a continuous st. .nd of a pourable, fibrous material such as shredded tobacco.
  • the invention relates in particular to that type of construction where the stream of tobacco is pneumatically transported at high speed to the perforated peripheral wall of a rotary suction wheel onto which the tobacco particles are deposited in the form of a stream.
  • a more specific object of the invention is to provide a method and apparatus accordingto which a stream of fibrous material, particularly shredded tobacco, is pneumatically fed while being treated in such a way that in the region of the pneumatic feeding path there is a high degree of uniformity in the density and mass of the cross section of the material with tobacco fibers or particles being transferred to a rotary suction wheel in a direction which will provide a uniform strand construction in the strand which forms by deposition of the material on the suction wheel.
  • FIG. I is a view in elevation of the apparatus according to the invention, with portions thereof shown in section
  • FIG. 2 is a plan view thereof, with a portion shown in section;
  • FIG. 3 is a sectional view of the strand-building structure, taken along line 3-3 of FIG. 4 in the direction of the arrows;
  • FIG. 4 is a sectional view of the strand-building structure of FIG. 3, taken along line 4-4 of FIG. 3 in the direction of the arrows;
  • FIG. 5 is a sectional view taken along line 5-5 of FIG. 1.
  • FIGS. 1 and 2 the supply means for supplying the tobacco in a dispersed, loosened, scattered, condition to the inlet of the suction conduit means.
  • This supply means includes a supply container 1 in which the supply of tobacco 2 is situated.
  • This container 1 has sidewalls 3 and 4 and supports for rotary movement a toothed roller 5 having a plurality of sharp pins projecting from its cylindrical wall.
  • This roller 5 coacts with a stripping roller 6, a beating roller 7, an endless conveyor belt 8 guided around rollers 9, a roller 10, and a guiding structure which can be connected with the main drive shaft 11 or can be separately driven by a driving motor 12.
  • the suction conduit means 13 has an inlet end situated directly at the delivery end of the endless conveyor belt 8 of the supply means on which the tobacco fibers are dispersed.
  • This suction conduit means 13 has in the region of the roller 9, about which the belt 8 extends, and the roll a substantially conical flaring portion 14 which diverges toward the delivery end of the belt 8 and which in cross section has a configuration adapted to the transfer requirements at the belt 8.
  • the suction conduit means 13 has a wall 15 which is disposed which tangentially with respect to the smooth exterior cylindrical surface of the roll 10 and rises approximately vertically up from the plane of the belt 8 while the other wall 16 of the suction conduit means 13, at its portion 14 which diverges towards band 8, is suitably adjusted to the belt 8 at a distance therefrom at the region where the belt 8 extends around the roller 9. (The flaring or divergent nature of the portion 14 and the tangential relationship between the walls 15 of conduit 13 and the surface of roll 10 can more clearly be seen from FIG. 5 herein.)
  • the suction conduit means 13 has a constant cross section and is provided in its interior with partitions 17 and 18 which divides the suction conduit means into three subsidiary suction conduits respectively having uniform crosssectional areas.
  • the suction conduit means 13 branches into separate subsidiary conduits 19, 20 and 21 respectively surrounded by cell means 22, 23 and 24 through which these subsidiary conduits 19, 20 and 21 respectively extend, the several cell means 22, 23 and 24 forming part of a housing 25 which surrounds the subsidiary conduits 19-21.
  • the several subsidiary conduits 19-21 provide for the conduits means 13 discharge ends located at transfer locations 26 in the region of the perforated circumferential wall 40 of the suction wheel 39.
  • the several subsidiary conduits 19-21 provide for the conduits respectively terminute in individual transfer locations 26 where they communicate with a closed flow chamber 27, limited by the sidewalls 50 and 51 indicated in FIG. 4.
  • the cross section of these conduits changes in such a way that the longitudinal cross-sectional dimensions of these conduits, circumferentially of the suction wheel means 39, is six to eight times the width of the effective suction surface of the circumferential perforated wall 40 of the suction feed wheel means 39.
  • the several conduits 19-21 diminish in width so that at the transfer locations 26 they have a minimum width substantially equal to that of the peripheral wall 40.
  • the several suction conduits 19-21 are provided with foraminous wall portions which start somewhat beyond the leading ends of their regions of longest cross-sectional length, these foraminous wall portions 28 being in the nature of windows formed by perforated, slotted, or fine-mesh wall portions which serve to provide a discharge for the air streams in which the tobacco is suspended in the suction conduit means, the air flowing out through the foraminous wall portions 28 into the separating cells 22-24, respectively.
  • the discharge portions 28 have their starting ends located somewhat beyond the region where the suction conduits 19-21 have reached their longest cross-sectional length, and these discharge portions 28 are located to those regions of the subsidiary conduits 19-21 where their longitudinal cross-sectional dimensions no longer change.
  • the foraminous wall portions 28 terminate in the downstream direction at the location where the cross-sectional width of the individual suction conduits 19-21 is approximately three times the minimum width thereof, as is indicated in FIG. 4.
  • the several cells means 22-24 respectively surround the several subsidiary suction conduits 19-21 at such a distance therefrom that a flow through the foraminous windows 28 is assured.
  • Wall portions of the several separating cell means 22- -24 are respectively formed with air-discharge openings 29 which provide communication between the several cells 22- 24 and a common collection chamber 31.
  • valves 30 At the several openings 29 are valves 30 in the form swingable or hingeably connected plates which can be adjusted in any known way for controlling the size of the openings 29 through which the air flows into the common chamber 31.
  • This chamber 31 communicates (FIG.
  • the fan 34 has a peripheral discharge conduit 35 which has an elbow portion to redirect the discharge of the fan 34 to communicate with a filter 36.
  • the major portion of the discharge leads into a conduit 37, which in turn feeds into a flaring outlet 38 (FIG. 2) which communicates with the inlet of the suction conduit means 13.
  • the several subsidiary suction conduits 19-21 are arranged one behind the other in series circumferentially of and in the region of the peripheral wall 40 of the suction feed wheel means 39, and the directions of the conduits 19-21 is such that extensions of the center lines thereof cut across the periphery of the suction feed wheel means 39, with each center line of each subsidiary conduit intersecting a tangent at the periphery of the suction wheel means 39 at a predetermined sharp, substantially pointed, acute angle.
  • An open ended enclosed chamber 27 extends between the transfer locations 26 and the wall 40 of the wheel 39 and communicates through the perforations in the circumferential wall 40 of the wheel 39 with an inner flow chamber 41 formed between the stationary end wall 42 and the rotary sidewall 43 of the suction wheel means 39.
  • This inner flow chamber 41 in the interior of the suction wheel means 39 communicates through a screen or other grid type of mesh 44 with the interior of a hollow shaft 45 which carries the rotary suction wheel 39.
  • This hollow shaft 45 in turn communicates through a cyclone 46, including tube 56, with a fan 47 which produces the second suction stream which acts through the perforations of the wall 40 on the space within the chamber 27 extending between the transfer locations 26and the wall 40.
  • the fans 34 and 47 are directly connected with the respective cyclones 33 and 46 i.e., the suction ports of the fans open into the cyclones.
  • the pipe 32 and hollow shaft 45 open into the cyclones 33 and 46 which are connected directly with fans 34 and 47.
  • the inlet of the fans, i.e., the suction portions are arranged in the center of the fan housings and are in direct communication with the cyclones.
  • the feeding of the fibrous material by suction streams within the suction conduit means 13 terminates where the latter suction streams flow out of the subsidiary conduits 19-21 at their foraminous windows 28.
  • the second stream created in the interior of the suction wheel 39 by the fan 47 then participates in the continued movement of the fibrous materials, shown in part, in the central portion of FIG. 4.
  • This fan 47 has a peripheral outlet conduit 48 which passes through an elbow portion to redirect the discharge of the fan 47 to a dust filter 49.
  • the wheel 39 which is supported for rotary movement on the hollow shaft 45, is driven by way of a bevel-gear transmission from the main drive shaft 11.
  • the shredded tobacco 2 is engaged by the rotary pin or toothed wheel 5 and is fed along a circumferential path where the excess tobacco is stripped by the stripping roll 6 and fed back into the supply container 1.
  • the high-speed beating roll 7 beats the tobacco fibers out of the roller 5 and centrifugally loosens the tobacco so as to disperse it into individual fibers which, in the form of a spray or shower of fibers, is deposited on the high-speed rotary band 8.
  • the belt 8 which moves around the rollers 9 delivers the dispersed thin tobacco fleece 52 into the inlet 14 of the suction conduit means 13, this inlet 14 having a size adapted to the width of the belt 8.
  • the initial inlet portion of the suction conduit means 13 extends approximately perpendicularly with respect to the plane of the belt 8 and provides a suction stream of relatively high speed directed approximately perpendicularly with respect to the direction in which the fleece is taken off from the belt 8.
  • the roller which rotates at the speed of movement of the belt 8 and which is arranged over the roller 9 and has a smooth exterior surface prevents non uniform particles of the thin tobacco fleece 52 from being taken up by the suction stream, this roller 10 engaging the tobacco fleece 52 without any pressure.
  • the enlarged end of 14 of the suction conduit means 13 enables the latter to take the fleece from the belt 8 across the entire width thereof with the shredded tobacco for the most part being loosened up into individual fibers.
  • the shredded tobacco is accelerated into the suction stream to then be subdivided by the partitions 17, 18 into the plurality of individual subsidiary streams which eventually reach the branches 19-21 of the suction conduit means so as to be fed in this way to the transfer locations 26 which are situated in the region of the perforated circumferential wall 40 of the suction wheel means 39.
  • the fleece which is taken up from the belt 8 across the entire width thereof has its cross section gradually reduced along the small or acute gradually changing angle formed by the enlarged portion 14, substantially eliminating in this way the impact or friction resistance which arises without any formation of larger fiber balls, and in this way the fibers are fed into the individual subsidiary stream "where their cross section remains unchanged.
  • the conduit 13 and the side branches 19, 20, 21 have a constant cross section ,until they enter the housing 25. They only undergo the slight and very gradual increase in circumferential length described V above and shown in FIG. 3 just upstream of the windows 28 within the separating cells 22-24.
  • the cross section, of the conduits 19, 20, 21 following their arriving at windows 28 or entry into the housing 25, changes so that the width decreases while the height increases (FIGS.
  • the cross-sectional t areas remain constant.
  • the speed of movement of the streams of tobacco also remains substantially constant, i.e., under these conditions of constant cross-sectional areas, the flow velocity remains substantially constant.
  • the tobacco streams flow into the transfer space within the flow chamber 27 which is limited by the sidewalls 50 and 51, and the tobacco particles are directed in a plurality of flow paths situated one behind the other circumferentially of the wheel 39 along a portion of the circumferential wall 40 thereof.
  • the pneumatic supply of the tobacco particles in the suction conduit means 13 and branches 19-71 thereof terminates at the foraminous windows 28, but because of the inertia of the tobacco particles they discharge out of the outlet openings of the branches 19-21 into the flow chamber 27 where their movement is continued by the suction action of the second suction stream which acts through the perforations of the wall 40 of the wheel means 39.
  • the particles are deposited in layers at the circumferential wall 40 where they form a tobacco strand with the wheel 39 rotating at the speed of movement of the tobacco strand.
  • the suction streams in the individual branches 19-21 can be independently controlled so that the velocity of each subsidiary tobacco stream can be individually regulated within certain limits.
  • the feed velocity V and the circumferential strand velocity V of the feed wheel means 39 can be predetermined with respect to each other in such a way that these velocities have a relationship according to the formula:
  • COS velocity V of circumferential wall 40 a feed velocity V The desirable angle or provides under these constructive conditions that no change in acceleration i.e., increase or decrease in acceleration of the subsidiary streams in the new direction of movement of the circumferential wall 40 takes place, and thus avoids any strand slippage with respect to the circumferential wall 40 of the feed wheel means 39 so as to guarantee, at the same time, that the fibers will be layered in an inclined direction so that highly favorable large extent of transverse stress with respect to the enveloping cigarette paper and thus a large filling capacity will be achieved.
  • the tobacco strand is held as a result of the suction against the perforated circumferential wall 40 through a predetermined region thereof, and then in a known way is fed past a trimming device which severs the excess tobacco from the cord and from there to a cigarette making machine where the tobacco cord is enclosed in cigarette paper and brought to the desired diameter and length.
  • the suction stream which acts through the perforations of the circumferential wall 40 flows through the inner flow chamber 41 defined between the walls 42 and 43 and through the screen or grid 44 into the hollow shaft 45 where this second suction stream is produced by the fan 47 which communicates with the hollow shaft 45 through the intermediate cyclone 46.
  • suction conduit 13 is divided into three subsidiary streams and has three branches 19-21 can, of course, be replaced with any desired number of subdivisions for the feeding of the tobacco streams.
  • the method can be adjusted to any desired increase in output and a strand having desirable properties assured.
  • a continuous strand of pourable, fibrous material such as shredded tobacco
  • suction conduit means for supplying the fibrous material, suction producing means, rotary suction wheel means having a perforated peripheral wall on which the strand is continuously formed, elongated suction conduit means having an inlet end situated at said supply means to receive the fibrous material therefrom and extending from said supply means up to the region of said rotary suction wheel means to a transfer location at which a stream of the material in the suction conduit means is transferred across a predetermined space to said suction wheel means, said suction conduit means including a plurality of subsidiary suction conduits separate from each other and dividing the stream of fibrous material into individual subsidiary streams which flow longitudinally along said suction conduit means, said suction conduit means flaring in the region of said supply means to diverge toward said supply means for changing the form of the stream as it flows from said supply means to a part of said suction conduit means where the latter is divided into said subsidiary suction conduits and said subsidiary suction conduits being situated in series one next to the
  • a plurality of separator cell means respectively surround the plurality of subsidiary suction conduits in the region of the transfer location so that the plurality of subsidiary suction conduits respectively extend through said plurality of separator cell means, and said plurality of subsidiary suction conduits respectively having foraminous wall portions in said plurality of separator cell means through which suction air flows out of said plurality of subsidiary suction conduits in the region of said transfer location to stop the movement of the fibrous particles by suction air in said suction conduit means, a plurality of valve means respectively carried by said plurality of separator cell means for controlling individually the flow of suction air in the several subsidiary suction conduits, respectively, a collecting chamber common to and communicating with all of said separator cell means for receiving the suction air therefrom,
  • cyclone means cyclone means, conduit means leading from said commoncollectlon chamber to said cyclone means, and fans means communicating with the interior of said cyclone means for achieving the suction streams in said suction conduit means.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Manufacture Of Tobacco Products (AREA)
US746152A 1968-02-23 1968-07-19 Method and apparatus for manufacturing continuous strands of a pourable material such as shredded tobacco Expired - Lifetime US3563249A (en)

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US (1) US3563249A (fr)
CH (1) CH486854A (fr)
CS (1) CS189803B1 (fr)
DE (1) DE1657232B1 (fr)
FR (1) FR1583859A (fr)
GB (1) GB1177584A (fr)
SE (1) SE338532B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941036A (en) * 1972-01-07 1976-03-02 Molins Limited Continuous filter rod making machines
US3957062A (en) * 1973-06-29 1976-05-18 Molins Limited Cigarette making machines
FR2298969A1 (fr) * 1975-02-01 1976-08-27 Molins Ltd Perfectionnements aux machines a fabriquer les cigarettes
US3980088A (en) * 1974-03-28 1976-09-14 Rothmans Of Pall Mall Canada Limited Cigarette making machine
US3987804A (en) * 1969-04-02 1976-10-26 Molins Limited Manufacture of cigarettes and the like
US4041959A (en) * 1975-10-08 1977-08-16 Amf Incorporated Braid forming method and apparatus
CN102874600A (zh) * 2012-10-17 2013-01-16 衡阳三力高科技开发公司 电动风压平衡器
CN110430766A (zh) * 2017-03-02 2019-11-08 国际烟草机械波兰有限责任公司 用于减小烟草工业机器中的配装带的应力的方法、用于减少烟草工业机器中的剔除的方法和用于烟草工业机器的配装装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1053153B (it) * 1975-11-18 1981-08-31 Amf Sasib Dispositivo formatore del cordone di tabacco in macchine continue confezionatrici di sigarette
LU74814A1 (fr) * 1976-04-21 1977-01-12
DE102006011742B3 (de) * 2006-03-13 2007-08-16 Roether, Friedemann, Dr.-Ing. Verfahren und Vorrichtung zur Regelung der Fördermenge von pneumatisch transportiertem Leichtgut

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GB291467A (en) * 1927-06-03 1929-01-17 Ivan Alexandrovic Semenov Improved method and apparatus for forming the tobacco rod in cigarette making machines
US2095150A (en) * 1934-04-04 1937-10-05 Molins Machine Co Ltd Cigarette making or like machine
US2111672A (en) * 1935-07-25 1938-03-22 Molins Machine Co Ltd Manufacture of cigarettes
US3019793A (en) * 1958-03-21 1962-02-06 Molins Machine Co Ltd Cigarette-making machines of the continuous rod type
US3074413A (en) * 1959-03-13 1963-01-22 American Mach & Foundry Cigarette making machine
US3138163A (en) * 1961-07-03 1964-06-23 American Mach & Foundry Cigarette making machine

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FR1098119A (fr) * 1954-01-07 1955-07-18 Decoufle Usines Perfectionnements aux dispositifs pour la formation du boudin de tabac dans les machines à cigarettes
DE1227369B (de) * 1959-04-18 1966-10-20 Amf Sasib S P A Vorrichtung zum Verdichten und Formen des Tabakstromes in Zigarettenherstellungsmaschinen
US3096770A (en) * 1959-04-21 1963-07-09 American Mach & Foundry Cigarette making machine and method
DE1172592B (de) * 1960-03-21 1964-06-18 Hauni Werke Koerber & Co Kg Vorrichtung zum UEberfuehren eines von einem Tabakband herangefuehrten Tabakstromes in die Umfangsnut einer unter Saugwirkung stehenden Foerderscheibe in Zigaretten-strangmaschinen
DE1161801B (de) * 1961-05-29 1964-01-23 Kyriazi Berlin Ag Verfahren und Vorrichtung zum Herstellen eines Tabakfuellstranges fuer Zigaretten, Zigarren, Zigarillos oder Rauchtabakpackungen
DE1885860U (de) * 1962-07-17 1964-01-09 Hauni Werke Koerber & Co Kg Vorrichtung zur herstellung eines gleichmaessigen tabakstranges.
DE1432667A1 (de) * 1964-06-09 1969-07-10 Hauni Werke Koerber & Co Kg Vorrichtung zum gleichmaessigen Verteilen von Tabakteilchen auf einen Tabakstrom
DE1284343B (de) * 1965-07-27 1968-11-28 Tabak U Industriemaschinen Dre Verfahren und Vorrichtungen zum Bilden eines kontinuierlichen Stranges aus Schnittabak oder anderen schuettbaren, faserigen Guetern

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB291467A (en) * 1927-06-03 1929-01-17 Ivan Alexandrovic Semenov Improved method and apparatus for forming the tobacco rod in cigarette making machines
US2095150A (en) * 1934-04-04 1937-10-05 Molins Machine Co Ltd Cigarette making or like machine
US2111672A (en) * 1935-07-25 1938-03-22 Molins Machine Co Ltd Manufacture of cigarettes
US3019793A (en) * 1958-03-21 1962-02-06 Molins Machine Co Ltd Cigarette-making machines of the continuous rod type
US3074413A (en) * 1959-03-13 1963-01-22 American Mach & Foundry Cigarette making machine
US3138163A (en) * 1961-07-03 1964-06-23 American Mach & Foundry Cigarette making machine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987804A (en) * 1969-04-02 1976-10-26 Molins Limited Manufacture of cigarettes and the like
US3941036A (en) * 1972-01-07 1976-03-02 Molins Limited Continuous filter rod making machines
US3957062A (en) * 1973-06-29 1976-05-18 Molins Limited Cigarette making machines
US3980088A (en) * 1974-03-28 1976-09-14 Rothmans Of Pall Mall Canada Limited Cigarette making machine
US3989052A (en) * 1974-03-28 1976-11-02 Rothmans Of Pall Mall Canada Limited Tobacco filler rod production
FR2298969A1 (fr) * 1975-02-01 1976-08-27 Molins Ltd Perfectionnements aux machines a fabriquer les cigarettes
US4041959A (en) * 1975-10-08 1977-08-16 Amf Incorporated Braid forming method and apparatus
CN102874600A (zh) * 2012-10-17 2013-01-16 衡阳三力高科技开发公司 电动风压平衡器
CN102874600B (zh) * 2012-10-17 2015-01-07 衡阳三力高科技开发公司 电动风压平衡器
CN110430766A (zh) * 2017-03-02 2019-11-08 国际烟草机械波兰有限责任公司 用于减小烟草工业机器中的配装带的应力的方法、用于减少烟草工业机器中的剔除的方法和用于烟草工业机器的配装装置
CN110430766B (zh) * 2017-03-02 2022-04-12 国际烟草机械波兰有限责任公司 用于减小烟草工业机器中的配装带的应力的方法和用于烟草工业机器的配装装置
US11425927B2 (en) * 2017-03-02 2022-08-30 International Tobacco Machinery Poland Sp. Z.O.O. Method for reducing stress of a garniture belt in a tobacco industry machine, a method for reducing rejection in a tobacco industry machine and a garniture device for a tobacco industry machine

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Publication number Publication date
DE1657232B1 (de) 1971-12-30
SE338532B (fr) 1971-09-06
CH486854A (de) 1970-03-15
FR1583859A (fr) 1969-12-05
GB1177584A (en) 1970-01-14
CS189803B1 (en) 1979-05-31

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