[go: up one dir, main page]

WO1988002994A1 - Reglage du poids d'une machine a fabriquer des cigarettes - Google Patents

Reglage du poids d'une machine a fabriquer des cigarettes Download PDF

Info

Publication number
WO1988002994A1
WO1988002994A1 PCT/GB1987/000762 GB8700762W WO8802994A1 WO 1988002994 A1 WO1988002994 A1 WO 1988002994A1 GB 8700762 W GB8700762 W GB 8700762W WO 8802994 A1 WO8802994 A1 WO 8802994A1
Authority
WO
WIPO (PCT)
Prior art keywords
solenoid
armature
trimmer
response
transducer
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/GB1987/000762
Other languages
English (en)
Inventor
Stanley Henry Dutton
Peter James Fryett
Robert Graham Waugh
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.)
Mpac Group PLC
Original Assignee
Molins Ltd
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 Molins Ltd filed Critical Molins Ltd
Priority to BR8707519A priority Critical patent/BR8707519A/pt
Publication of WO1988002994A1 publication Critical patent/WO1988002994A1/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
    • A24C5/18—Forming the rod
    • A24C5/1871—Devices for regulating the tobacco quantity
    • 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
    • A24C5/32—Separating, ordering, counting or examining cigarettes; Regulating the feeding of tobacco according to rod or cigarette condition
    • A24C5/34—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes
    • A24C5/3418—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes by pneumatic means

Definitions

  • Cigarette making machines commonly include a trimmer which removes part of the tobacco stream formed by showering tobacco through a chimney onto a suction band. After trimming, the tobacco stream is enclosed in a continuous wrapper web to form a continuous cigarette rod which is then cut into separate rod portions.
  • the trimmer control has two position control inputs, namely a relatively fast-responing control input derived from a pneumatic signal upstream of the trimmer, and a slower- responding input derived from a nucleonic device which monitors the weight per unit length of the completed continuous rod.
  • a nucleonic device has a fast response, enabling it to detect voids in the cigarette rod and, if desired, to activate an ejection mechanism for ejecting defective cigarettes; however, the signal from the nucleonic device is normally transmitted to the trimmer via a motor with a control circuit which provides a relatively slow averaging effect.
  • the present invention is concerned with an improvement in the control to the trimmer derived from the pneumatic signal upstream of the trimmer.
  • the pneumatic signal has until now been derived from a chamber (commonly referred to as an "air cell") adjacent to the suction band in a region between the chimney and the trimmer; however, the air cell could in principle be located further upstream, above the chimney, in a region where the tobacco stream is nearly but not completely formed.
  • a trimmer position control device in a cigarette making machine comprises an hydraulic amplifying unit having an input member movable through a predetermined relatively small distance and capable of applying a relatively small force, an output member which moves in response to movement of the input member but, as a result of hydraulic pressure, with a more pronounced movement and a greater force, an air chamber adjacent to the tobacco stream and having in it a suction pressure dependent upon the pressure drop through the tobacco stream, an electrical transducer arranged to be exposed to the suction pressure in the chamber and to emit an electrical signal in response thereto, an amplifier for amplifying the electrical signal, and a positive displacement solenoid device to which the amplified signal is applied and which is arranged to drive the input member in response thereto.
  • positive displacement solenoid device is intended to refer particularly to a self-centering solenoid device producing movement of its output member (the input to the hydraulic unit) with an ampl tude precisely related to the amplitude of the elctrical signal applied to the solenoid device.
  • the solenoid device should preferably have an armature mounted on two axially spaced resilient diaphragms whereby the armature (which comprises or is coupled to the output member of the solenoid device) returns to a predetermined position when no electrical signal is applied to the solenoid.
  • a suitable device for that purpose is one designed to serve normally as a vibrator, an example being Vibrator type GWV4/2 made by Gearing & Watson (Electronics) Limited, England.
  • An important advantage of this invention is that it provides a significantly faster response than the arrangement we have used until now. In particular, it avoids the response delay resulting from the unavoidable length of the pipe connecting the air cell to the bellows in the previous arrangement, and the disadvantageous consequences of tobacco dust contamination in the pipe and bellows.
  • the electrical transducer is mounted in a casing close to the air cell, either within the suction chamber to which suction is applied to the suction band, or behind the suction chamber.
  • a trimmer control device may, in principle, be the sole position control for the trimmer. However, it is preferably used in combination with an averaging control device responsive to the weight of the completed cigarette rod (e.g. a nucleonic device) as described above and in the above-mentioned patent.
  • an averaging control device responsive to the weight of the completed cigarette rod e.g. a nucleonic device
  • Figure 1 is a diagrammatic overall view of the device.
  • FIG. 2 is a diagrammatic sectional view of the solenoid device.
  • a tobacco stream 10 is formed on a suction band 12 which moves past an air cell 14 mounted within a suction c amber through which suction is applied to the band 12 to hold the tobacco on the band.
  • the air cell itself has a pipe 16 through which suction is transmitted to the cell from a separate suction source.
  • the suction pressure in the cell 14 varies, and this variable suction pressure is transmitted by a pipe 18 to a transducer casing 20.
  • the casing 20 includes a solid-state differential pressure transducer, for example the transducer SCX01D made by Sensortec GmbH, Germany. One side of the diaphragm of this transducer is exposed to suction pressure from the pipe 18 while the other side is exposed to atmospheric pressure via pipe 22.
  • the transducer emits an electrical signal which is transmitted via leads 24 to a positive displacement solenoid device 26 which is shown diagrammatically in Figure 2.
  • the solenoid device comprises a solenoid
  • a rod 32 is fixed to the armature and thus moves vertically upwards and downwards in response to the electrical signal from the transducer.
  • the device 26 is mounted at one end on a frame 28 via a screw threaded member 30 whereby the vertical position of the device 26 can be manually adjusted for zero setting. It should be added that this signal is subject to pre-a pl ification by a pre-ampl if ier incorporated in the case 20, and to further amplification by a main amplifier which may be incorporated into a case enclosing the solenoid device.
  • the rod 32 serves as the input member for an hydraulic amplifier 34 having an output shaft 36.
  • the shaft 36 is rotated in response to movement of the rod 32, and in turn moves a trimmer control rod 38 via a crank 40 on the shaft 36.
  • the hydraulic amplifier is powered by an hydraulic pump 42.
  • the hydraulic amplifier and pump are of a construction previously used in Molins Mark 8 and Mark 9 machines.
  • the main amplifier may incorporate means for time shifting the signal, for example by means of a conventional "bucket brigade” type of circuit.
  • movement of the trimmer by the rod 38 may be timed to coincide with the arrival at the trimmer of the portion of tobacco whose flow resistance was detected by the the transducer.
  • the pre-ampl if ier in the case 20 may, for example, be arranged to produce a zero output when the suction pressure in the air cell 14 is equal to 12 inches of water guage (305mm). Changes in the suction pressure above or below that average level, for example plus or minus 1.5 inches (38mm), result in positive or negative signals being applied to the solenoid, which consequently moves the rod 32 upwards or downwards to provide the appropriate adjustment to the trimmer position.
  • the movement of the rod 32 may be plus or minus 1.6mm from the central datum position, and such movements may result in trimmer movements of up to plus or minus 8mm.

Landscapes

  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)

Abstract

Un dispositif de commande de la position d'un écrêteur dans une machine à fabriquer des cigarettes comprend une unité d'amplification hydraulique (34) possédant un élément d'entrée (32) mobile sur une distance prédéterminée relativement faible, et capable d'appliquer une force relativement faible; un élément de sortie (36, 38, 40) qui se déplace en réponse au mouvement de l'élément d'entrée mais, par suite de la pression hydraulique, avec un mouvement plus prononcé et une plus grande force; une chambre d'air (14) adjcente à la veine de tabac et dans laquelle règne une pression d'aspiration qui est fonction de la chute de pression à travers la veine de tabac; un transducteur électrique (20) agencé de manière à être exposé à la pression d'aspiration dans la chambre et à émettre un signal électrique en réaction à celle-ci; un amplificateur permettant d'amplifier le signal électrique; et un solénoïde (26) à déplacement positif, auquel le signal amplifié est appliqué et qui est conçu pour entraîner l'élément d'entrée (2) en réaction audit signal.
PCT/GB1987/000762 1986-10-29 1987-10-28 Reglage du poids d'une machine a fabriquer des cigarettes Ceased WO1988002994A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR8707519A BR8707519A (pt) 1986-10-29 1987-10-28 Dispositivo de controle da posicao do nivelamento para uma maquina de fabricar cigarros

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8625900 1986-10-29
GB868625900A GB8625900D0 (en) 1986-10-29 1986-10-29 Cigarette making machine weight control

Publications (1)

Publication Number Publication Date
WO1988002994A1 true WO1988002994A1 (fr) 1988-05-05

Family

ID=10606505

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1987/000762 Ceased WO1988002994A1 (fr) 1986-10-29 1987-10-28 Reglage du poids d'une machine a fabriquer des cigarettes

Country Status (6)

Country Link
EP (1) EP0290500A1 (fr)
JP (1) JPH01501039A (fr)
CN (1) CN87107209A (fr)
BR (1) BR8707519A (fr)
GB (2) GB8625900D0 (fr)
WO (1) WO1988002994A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH683227A5 (fr) * 1989-05-25 1994-02-15 Tabac Fab Reunies Sa Procédé pour la formation d'un boudin continu dans la fabrication des cigarettes et appareil pour la mise en oeuvre du procédé.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089497A (en) * 1958-09-15 1963-05-14 Molins Machine Co Ltd Tobacco manipulating machines
GB958021A (en) * 1959-06-03 1964-05-13 Molins Machine Co Ltd Improvements in or relating to tobacco manipulating machines
FR2299822A1 (fr) * 1975-02-10 1976-09-03 Japan Tobacco & Salt Public Dispositif de controle de la charge de tabac dans une machine de fabrication de cigarettes
US4595027A (en) * 1984-05-08 1986-06-17 Philip Morris Incorporated Rod weight control for a cigarette making machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB958209A (en) * 1959-06-03 1964-05-21 Molins Machine Co Ltd Improvements in or relating to tobacco manipulating machines
GB961731A (en) * 1959-06-03 1964-06-24 Molins Machine Co Ltd Improvements in or relating to tobacco-manipulating machines
DE2833124A1 (de) * 1978-07-28 1980-02-07 Hauni Werke Koerber & Co Kg Verfahren und anordnung zum bilden eines stranges aus rauchfaehigen, vorzugsweise tabak bestehenden fasern
US4474190A (en) * 1981-03-21 1984-10-02 Hauni-Werke Korber & Co. Kg Method and apparatus for regulating the operation of machines for the production of cigarettes or the like

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089497A (en) * 1958-09-15 1963-05-14 Molins Machine Co Ltd Tobacco manipulating machines
GB958021A (en) * 1959-06-03 1964-05-13 Molins Machine Co Ltd Improvements in or relating to tobacco manipulating machines
FR2299822A1 (fr) * 1975-02-10 1976-09-03 Japan Tobacco & Salt Public Dispositif de controle de la charge de tabac dans une machine de fabrication de cigarettes
US4595027A (en) * 1984-05-08 1986-06-17 Philip Morris Incorporated Rod weight control for a cigarette making machine

Also Published As

Publication number Publication date
GB2196524A (en) 1988-05-05
EP0290500A1 (fr) 1988-11-17
GB8725202D0 (en) 1987-12-02
GB8625900D0 (en) 1986-12-03
CN87107209A (zh) 1988-08-10
GB2196524B (en) 1990-08-15
BR8707519A (pt) 1989-02-21
JPH01501039A (ja) 1989-04-13

Similar Documents

Publication Publication Date Title
US3089497A (en) Tobacco manipulating machines
GB2095092A (en) Regulating the operation of machines for the production of cigarettes or the like
GB958208A (en) Improvements in or relating to tobacco-manipulating machines
US3412856A (en) Method and apparatus for testing cigarettes and the like
AU564365B2 (en) Air-sorting apparatus
WO1988002994A1 (fr) Reglage du poids d'une machine a fabriquer des cigarettes
GB2088691A (en) Detecting soft sections of tobacco fillers
SU1039433A3 (ru) Способ контрол стержнеобразных табачных изделий и устройство дл его осуществлени
US2739478A (en) Apparatus for measuring mass gas flow and application thereof to gas-liquid ratio control system
GB2136265A (en) Apparatus for making a tobacco filler
US3306304A (en) Tobacco-manipulating machines
RU2132754C1 (ru) Устройство для сепарации сыпучей смеси
GB1568972A (en) Apparatus providing output indication of tobacco rod firmness
US3769989A (en) Cigarette making machines
GB1304343A (fr)
US3088061A (en) Sheet thickness sensing servomechanism
GB990567A (en) Improvements in or relating to tobacco-manipulating machines
GB2156987A (en) Cigarette making machine
GB917050A (en) Improvements in or relating to air-pressure winnowing arrangements for combine harvesters
SU1386077A1 (ru) Устройство дл контрол рабочих органов машины дл внутрипочвенного внесени жидких удобрений
GB958236A (en) Improvements in or relating to control apparatus for cigarette-making machines
GB888478A (en) Improvements in or relating to the manufacture of a continuous rod comprising a continuous filler wrapped in a continuous wrapper, such as the manufacture of cigarettes
US4020851A (en) Apparatus for monitoring the operation of cigarette making machines or the like
GB888479A (en) Improvements in or relating to the manufacture of stubs for mouthpiece cigarettes
SU439696A1 (ru) Пневматический дифференциальный прибор дл линейных измерений

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): BR JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1987906925

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1987906925

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1987906925

Country of ref document: EP