US3772967A - Apparatus for producing cigarette filters - Google Patents

Apparatus for producing cigarette filters Download PDF

Info

Publication number
US3772967A
US3772967A US00186669A US3772967DA US3772967A US 3772967 A US3772967 A US 3772967A US 00186669 A US00186669 A US 00186669A US 3772967D A US3772967D A US 3772967DA US 3772967 A US3772967 A US 3772967A
Authority
US
United States
Prior art keywords
filter
wads
cover strip
running
free
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.)
Expired - Lifetime
Application number
US00186669A
Other languages
English (en)
Inventor
C Burrus
S Boegli
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.)
Burrus et Cie
Original Assignee
Burrus et Cie
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 Burrus et Cie filed Critical Burrus et Cie
Application granted granted Critical
Publication of US3772967A publication Critical patent/US3772967A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • A24D3/0212—Applying additives to filter materials
    • A24D3/0225—Applying additives to filter materials with solid additives, e.g. incorporation of a granular product
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/003—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one stationary surface, e.g. a plate

Definitions

  • ABSTRACT Juhasz Assistant ExaminerLeon Gilden AttorneyPierce, Scheffler & Parker [5 7 ABSTRACT A machine for making cigarette filters of the type within which sections of fibrous and of free-running filter materials are arranged in succession and which has a filler head for feeding free-running filtration material into spaces situated between filter elements or wads arranged on a filter-tip cover strip with which the wads travel continuously forwards, a storage container being provided, the discharge slot of which container constitutes the filling aperture is characterized by the provision of shut-off arrangements operating in conjunction with the discharge slot in the filler head so as to regulate the opening of that slot, and by the fact that the bottom portion of the storage container is made cylindrical and the shut-off arrangements consist of a scoop-shaped closing member, in contact with the inner face of the cylindrical member and capable of rotation about the longitudinal axis thereof.
  • the object of the present invention is a device for the manufacture of cigarette filters within which sections of fibrous and of free-running filter materials are arranged in succession and which has a filler head for feeding free-running filtration material into spaces situated between filter elements or wads arranged on a filter-tip cover strip, with which the wads travel continuously forwards, a storage container being provided, the discharge slot of which constitutes the filling aperture.
  • the purpose of the invention is to provide a device free from these drawbacks.
  • the device here proposed is characterised by the provision of shut-off arrangements operating in conjunction with the discharge slot in the filler head so .as to regulate the opening of that slot, and by the fact that the bottom portion of the storage container is made cylindrical and that shut-off arrangements consist of a scoop-shaped closing member, in contact with the inner face of the cylindrical member and-capable of rotation about the longitudinal axis thereof.
  • the closing edge of the closing member to run helically about the longitudinal axis of the cylindrical portion of the storage container, so that when the closing member turns in the closing direction it is initially the end of the dischargeslot that faces the opp'o- 7 site way to the direction of travel of the spaces to be filled which is freed, this being followed by those parts of the discharge slot which are farther from the said end thereof as the closing member continues to turn.
  • the device here proposed to incorporate means of providing a continuous supply of a succession of filter elements or wads, uniformly spaced, on the continuously fed filter-tip cover strip; means of securing the individual filter wads to the cover strip; means of guidance and conveyance for guiding the cover strip and its attached filter wads and continuously moving them forwards; a shaping member, in the vicinity of the said means of guidance and conveyance, by which the cover strip, as it moves forward, is wrapped at least approximately U-fashion round the filter wads attached to it; a sliding member above the means of guidance and conveyance, such as to lie, be-
  • the filler head prefferably has an elongated sliding member extending in the direction of travel of the filter wads and having a sliding face in such close contact as to form a seal with the tops of the filter wads moving forward with the cover strip; for the width of the sliding member to be at least approximately equal in diameter to the filter wads to be wrapped in the cover strip; and for the side faces of the sliding member to be parallel to each other and to the direction of travel of the cover strip and to be designed to lie'in such close contact as to form a seal with those faces of the arms of the U-shaped cover strip which face towards each other
  • FIG. 1 is a diagrammatic side elevation of a device for producing a cigarette filter unit
  • FIG. 2 is a section through the filler head, along the line 11-11 in FIG. 3; l
  • FIG. 3 is a section along the line IlllII in FIG. 2;
  • FIG. 4 is an enlarged section along the line IV-IV in FIG. 2; Y I
  • FIG. 5 is a section along the line V-V in FIG. 1, to show the fixing mechanism
  • FIG. 6 is a section along the line VI-VI in FIG. 1, to show the top welding arrangements
  • FIG. 7 is a section along the line VII-VII in FIG. 1, to show the cooler
  • FIG. 8 is a section along the line VIII-VIII in FIG. 1, to show the bottom welding arrangements; and FIG. 9 is a longitudinal section of the adjusting mechanism serving to bring the operating-cycle of the filter elementfeed into line with that of the cutting mechanism.
  • a machine 4, known in the cigarette industry as a Molins D.A.P.T.C. Machine, which is described in detail in U.S.A. Pat. Specification No. 2,957,285.
  • This machine 4 has two magazines, 5, for holding lengths of filter material, such as cellulose and acetate, for example, and two rotary drums, 6, which serve to receive them.
  • the machine 4 is worked by the driving chain 7.
  • the drums 6 contain grooves,
  • the uniformly spaced and axially aligned filter wads l and 2 are fed continuously to a filter-tip cover strip, 3, likewise continuously fed, on which they are deposited, being guided at the sides, as shown in FIG. 5, by the guide members and 11 and held in place, in relation to one another, by a pressure band, 12, situated above and running round in synchrony with the cover strip 3.
  • That face of the cover strip 3 which lies towards the filter wads 1 and 2 is coated with an adhesive such as, for instance, a thermoplastics, which softens under the action of heat, so that it is possible for the individual filter wads l and 2, directly they have been discharged on to the cover strip 3, to be secured to it with the aid of a heater, 13, thereby preventing relative motion, that is to say preventing any alteration in their spacing.
  • the cover strip 3 rests on a support, 14, while the heater 13 can be pressed from below, through a slot in the support 14, against the cover strip 3 and thus indirectly against the filter wads l and 2 that require to be anchored in place.
  • the temperature of the heater 13 should preferably be thermostatically controlled. The heater 13 is so arranged that it can be moved clear of the cover strip 3 when this is stationary, to avoid burning it.
  • This assembly is then carried by the conveyor belt 15 to a filler head, 16, shown in greater detail in FIGS. 2, 3 and 4, which serves for the introduction of free-running filter material such as charcoal, for example, into the space 17 formed between the individual filter wads l and 2.
  • the downward-facing discharge end of the storage container 18 of the filler head 16 is connected to a sliding member, 19, which is in contact with the wads l and 2 and encloses them to the extent of at least 180.
  • the width of the sliding member 19 is approximately equal to the diameter of the filter wads l and 2 it is desired to wrap in the cover strip 3, the side faces 19a and 19b running parallel to each other and to the direction of motion of v the conveyor belt 15 and serving to provide sealing contact with the inner faces 30 and 3b of the U-arms of the cover strip 3. In this way, spaces bounded by the end faces of the filter wads l and 2, the cover strip 3 and the sliding surface of the sliding member 19 are formed at 17.
  • the filler head 16 is equipped with a vibrator, 23, the effect of which is to cause the tiller head 16, mounted resiliently on flat springs (24, in FIG. 3), to vibrate at 100 cycles per second in a vertical plane.
  • the filler head 16 is suspended by the springs 24 from a guide, 26, which runs parallel to the track 25 provided for the conveyor belt 15, and clamped to the said guide by means of screws, 27.
  • the screws 28 serve for horizontal alignment of the sliding member 19 in relation to the filter wads l and 2 below it, while the screws 29, rigidly connected to the guide 26, enable the amplitude of vibration of the filler head 16, imparted by the vibrator 23, to be regulated.
  • the discharge slot 20 can be made relatively broad, this being very important for unhindered follow-on of the freerunning filter material.
  • a semi-circular trimming edge, 30, which bounds the cross-section of the filter wads l and 2 as they pass through and trims off the excess of free-running filter material. This trimming edge 30, being exposed to heavy wear when the equipment is running, is provided on an interchangeable trimmer, 31, which can be inserted into the sliding member 19.
  • the underside of the trimmer 31 is provided with transverse grooves, 31a, which remove any grains of the free-running filter material that still remain on the filter wads, pick them up and release them into the succeeding spaces 17.
  • the trimmer 31 may also be equipped with a suction aperture, through which the dust coating can be removed by the creation of a very slight partial vacuum.
  • the bottom portion, 32, of the storage container 18 is made cylindrical.
  • a scoop-like closing member, 33 in sliding contact with the interior face of the cylindrical member 32 and designed to turn about the longitudinal centre line thereof.
  • a handle, 34 for rotating the closing member 33, there is a handle, 34, while a stud, 36, thrust by a spring towards the semi-circular plate 35, can drop home into recesses in various positions on the plate 35.
  • the closing member 33 is thus shaped like a section of the curved surface of a cylinder and is made as thin as possible, so as to keep to the minimum the force that needs to be exerted on the handle 34 to move the closing member when the container 18 is full.
  • the closing edge of the closing member 33 is also made oblique or sharpened in relation to the inner face of the cylindrical member 32, so as to facilitate movement of the closing member 33, and it runs helically round the longitudinal axis 37 of the cylindrical member 32, so that as the closing member 33 is turned in the direction for opening, it is initially the end of the discharge slot 20 that faces the opposite way to the direction of travel of the spaces to be filled which is freed, this being followed by those parts of the discharge slot 20 which are farther from the said end thereof as the closing member continues to turn.
  • the storage container 18 which is fed from the reserve container 38 (FIG. 1), from being over-filled, it is entered by two lengths of pipe, 39, each with its top end joined to a feed pipe, 40, for the freerunning filter material, and with its bottom end situated at the filling level of the container 18.
  • the pipe 39 nearer to the suction aperture 22 contains a cutout, 41, facing towards the suction aperture, to increase the outflow of filter material, the consumption of which is greatest at that point.
  • the storage container 18 is also provided with a shutter, 42, which can be slid across the lower ends of the feed pipes 40. 7
  • the upper part 44 of the track 25 is. so shaped that the cover strip 3 is converted into a complete tube, a suction device being provided at 45 for the removal of any free-running filter material remaining between the edges of the cover strip.
  • a sealing unit, 46 which, as shown in FIG. 6, has a heatable element, 47, which can be applied to the tube that is to be sealed.
  • a heatable element, 47 which can be applied to the tube that is to be sealed.
  • the heatable element 47 is provided with a guidance channel, 48, semi-circular in section, its radius of curvature being the same as the outside radius of the tube that is to be produced.
  • the guidance channel 48 in the heatable element 47 is immediately followed by another such channel, 49, in a cooling unit, 50, which can be lowered on to the tube so as to cause the heat-softened plastics to set.
  • the tube When the tube has been stuck together, it is passed to a cutting head, 51, in which it is divided up in such a way that the length of each filter assembly is six times the length of a filter for a cigarette.
  • a timing mechanism, 52 (FIG. 9), is also provided, to synchronise the machine 4 feeding the filter wads 1 and 2 on to the cover strip 3 with the drive of the cutting head 51 by which the tube filled with filter material is divided into given lengths.
  • the drives of the feed mechanism 4 and that of the cutting head 51 are linked together by a two-part shaft, 53a/53b.
  • a two-part shaft, 53a/53b Between the first part 53a and the second part 53b of the connecting shaft is an adjusting member, 54, which rotates with the latter, for altering the relative angular position of the two parts 53a and 53b of the shaft.
  • the adjusting member 54 has two parts, 55 and 56,-
  • a spindle, 59 driven by an electric motor, is provided, which in rotating displaces the intermediate member 60 and hence also the part 56.
  • FIG. 1 and 8 Another adhesive joining unit, 61 (FIGS. 1 and 8), in which the heater 62 bears against the tube from underneath.
  • the guide channel 63 in this heater is semi-circular in section and cements the as yet uncemented part of the cover strip 3 formed into a tube to the filter wads 1 and 5, so that these adhere to the cover strip 3 round their entire periphery and no free-running filter material can escape from the spaces 17, between the faces of the wads and the strip 3.
  • Endless spiral wires, 64 run round and exert pressure on the upper side of the lengths of tube.
  • Such a filler head also has the advantage that when the discharge aperture is made smaller the granular filter material normally used is not crushed to form undesirably dusty material.
  • a device for the manufacture of cigarette filters within which sections of fibrous and free-running filter materials are arranged in succession including a filler head (16) for feeding free-running filtration material into spaces (17) situated between filter elements or wads arranged on a filter-tip cover strip with which the wads travel continuously forwards,
  • a storage container (18) being provided with a discharge slot (20) of which constitutes a filling aperture;
  • shut-off arrangement including a scoop-shaped closing member (33) having a closing edge, said arrangement operating in conjunction with said discharge slot (20) in the filler head (16) so as to regulate the opening of that slot,
  • the bottom portion (32) of the -storage container (18) being cylindrical and having a longitudinal axis (37),
  • the shut-off arrangement comprising said scoopshaped closing member (33) in contact with the inner face of cylindrical bottom (32) of storage container (18) and capable of rotation about the longitudinal axis thereof, the closing edge of the closing member (33) running helically about the longitudinal axis (37) of said cylindrical portion (32) of the storage container, whereby when the closing member (33) turns in the closing direction it is initially the end of the discharge slot (20) that faces the opposite way to the direction of travel of the spaces (17) to be filled which is freed, this being followed by those parts of the discharge slot which are farther from the said end thereof as the closing member continues to turn.
  • a device as claimed in claim 1 which further prises means for providing a continuous supply of a succession of filter elements or wads (l and 2), uniformly spaced, on a continuously fed filter-tip cover strip means (12-14) for securing the individual filter wads (l and 2) to the cover strip,
  • a device as claimed in claim 1 which further comprises means for providing a continuous supply ofa succession of filter elements or wads (1 and 2), uniformly 8 spaced, on a continuously fed filter-tip cover strip (3);
  • the means for joining together the overlapping edges of the strip incorporating a first heatable element (47), which can be brought down on to the tube that is to be joined, said heatable element (47) having a guidance channel (48) at least approximately semi-circular in section, its radius of curvature being the same as the outside radius of the tube that is to be produced, said guidance channel (48) being immediately followed by a second channel (49) in a cooling unit (50) which can be lowered on to the tube so as to cause the heat-softened plastics to set; and

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
US00186669A 1970-12-01 1971-10-05 Apparatus for producing cigarette filters Expired - Lifetime US3772967A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1775470A CH517449A (de) 1970-12-01 1970-12-01 Einrichtung zur Herstellung eines Zigarettenfilterstabes

Publications (1)

Publication Number Publication Date
US3772967A true US3772967A (en) 1973-11-20

Family

ID=4427843

Family Applications (1)

Application Number Title Priority Date Filing Date
US00186669A Expired - Lifetime US3772967A (en) 1970-12-01 1971-10-05 Apparatus for producing cigarette filters

Country Status (8)

Country Link
US (1) US3772967A (enrdf_load_html_response)
JP (1) JPS5412559B1 (enrdf_load_html_response)
AT (1) AT302139B (enrdf_load_html_response)
CA (1) CA943030A (enrdf_load_html_response)
CH (1) CH517449A (enrdf_load_html_response)
FR (1) FR2117133A5 (enrdf_load_html_response)
GB (1) GB1343343A (enrdf_load_html_response)
IT (1) IT941585B (enrdf_load_html_response)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310324A (en) * 1979-01-24 1982-01-12 Imperial Chemical Industries Limited Method and apparatus for the manufacture of fusecord
US6708734B2 (en) * 2002-01-23 2004-03-23 Philip Morris Incorporated Vibrational removal of excess particulate matter
EP2217100A2 (de) 2007-11-27 2010-08-18 Hauni Maschinenbau Aktiengesellschaft Vorrichtung zur bearbeitung von mindestens zwei filtertowsträngen
US11076635B2 (en) 2013-02-15 2021-08-03 International Tobacco Machinery Poland Sp. Z O. O. Method, mechanism and apparatus for momentary compression of filter material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661876A (en) * 1951-06-15 1953-12-08 Bemis Bro Bag Co Hopper and power actuated discharge gate
US3357321A (en) * 1965-07-08 1967-12-12 Liggett & Myers Tobacco Co Apparatus and process for making multisectional filter tips for cigarettes
US3610112A (en) * 1968-06-28 1971-10-05 Molins Machine Co Ltd Manufacture of filters for cigarettes and like smokers' articles
US3623404A (en) * 1968-06-14 1971-11-30 Molins Machine Co Ltd Manufacture of filters for cigarettes or similar smokable articles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661876A (en) * 1951-06-15 1953-12-08 Bemis Bro Bag Co Hopper and power actuated discharge gate
US3357321A (en) * 1965-07-08 1967-12-12 Liggett & Myers Tobacco Co Apparatus and process for making multisectional filter tips for cigarettes
US3623404A (en) * 1968-06-14 1971-11-30 Molins Machine Co Ltd Manufacture of filters for cigarettes or similar smokable articles
US3610112A (en) * 1968-06-28 1971-10-05 Molins Machine Co Ltd Manufacture of filters for cigarettes and like smokers' articles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310324A (en) * 1979-01-24 1982-01-12 Imperial Chemical Industries Limited Method and apparatus for the manufacture of fusecord
US6708734B2 (en) * 2002-01-23 2004-03-23 Philip Morris Incorporated Vibrational removal of excess particulate matter
EP2217100A2 (de) 2007-11-27 2010-08-18 Hauni Maschinenbau Aktiengesellschaft Vorrichtung zur bearbeitung von mindestens zwei filtertowsträngen
US11076635B2 (en) 2013-02-15 2021-08-03 International Tobacco Machinery Poland Sp. Z O. O. Method, mechanism and apparatus for momentary compression of filter material

Also Published As

Publication number Publication date
DE2100982A1 (de) 1972-06-08
GB1343343A (en) 1974-01-10
CA943030A (en) 1974-03-05
DE2100982B2 (de) 1976-11-04
AT302139B (de) 1972-10-10
CH1775470A4 (enrdf_load_html_response) 1972-02-29
IT941585B (it) 1973-03-10
CH517449A (de) 1972-02-29
FR2117133A5 (enrdf_load_html_response) 1972-07-21
JPS5412559B1 (enrdf_load_html_response) 1979-05-23

Similar Documents

Publication Publication Date Title
US3762281A (en) Process of making cigarette filters, and apparatus therefor
US4798575A (en) Method and apparatus for the manufacture of filters
US3348455A (en) Apparatus for producing composite filter plugs
FR2286701B1 (enrdf_load_html_response)
US4494361A (en) Packaging of drinking straws
US3772967A (en) Apparatus for producing cigarette filters
CA1038747A (en) Apparatus for producing the so-called inner elements or collars in cigarette packaging machines for forming stiff packets
US1941343A (en) Apparatus for making brushes
US2038525A (en) Automatic soldering machine
US2424103A (en) Conveyor for packaging machines
US2315866A (en) Filling machine
US3545345A (en) Method and apparatus for making cigarette filter tips
US3812768A (en) Method and device for producing a cigarette filter unit
US3884105A (en) High-duty cheese-slicing machine
US2534954A (en) Cigarette turning device
US2677036A (en) Arc-welding process and apparatus
US1393526A (en) Tipping mechanism for cigarette-machines
US3343462A (en) Multiple filter making machine
US4693260A (en) Continuous cigarette rod cutting apparatus for a cigarette making machine
US3156246A (en) Cigarette machine for making mouthpiece cigarettes
US1573616A (en) Cigarette-making machine
SU637260A1 (ru) Бетоноукладчик
US1567533A (en) Cigarette machine
US2048473A (en) Tobacco cutting machine
US1538476A (en) Machine for cutting several individual cigarettes from previously cut cigarette rods