EP0494426B1 - Dispositif pour contrôler des mandrins - Google Patents

Dispositif pour contrôler des mandrins Download PDF

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Publication number
EP0494426B1
EP0494426B1 EP91121894A EP91121894A EP0494426B1 EP 0494426 B1 EP0494426 B1 EP 0494426B1 EP 91121894 A EP91121894 A EP 91121894A EP 91121894 A EP91121894 A EP 91121894A EP 0494426 B1 EP0494426 B1 EP 0494426B1
Authority
EP
European Patent Office
Prior art keywords
folding
mandrels
inductive
folding mandrels
rotation
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
EP91121894A
Other languages
German (de)
English (en)
Other versions
EP0494426A1 (fr
Inventor
Heinz Focke
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.)
Focke and Co GmbH and Co KG
Original Assignee
Focke and Co GmbH and Co KG
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 Focke and Co GmbH and Co KG filed Critical Focke and Co GmbH and Co KG
Publication of EP0494426A1 publication Critical patent/EP0494426A1/fr
Application granted granted Critical
Publication of EP0494426B1 publication Critical patent/EP0494426B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/006—Controlling; Regulating; Measuring; Improving safety

Definitions

  • the invention relates to a folding device, in particular a folding turret for producing packs from at least one foldable blank, preferably cigarette soft-cup packs, with circumferential folding mandrels mounted on one side for the blanks or packs.
  • the one-sided protruding or projecting folding mandrels are continuously moved by a conveyor during the folding and filling process of the package, in particular by means of a folding turret. Due to the arrangement (one-sided fastening) as well as the geometrical shape and dimensions, the folding mandrels are sensitive to mechanical loads. Unwanted deformations of the folding mandrels during the operation of the packaging machine cannot be excluded. If the deformations exceed a certain level, there are disruptions in the packaging process. Wrong packs arise. The packaging machine must be stopped, the deformed folding mandrel identified and straightened or replaced. This process is time consuming.
  • the invention has for its object to provide a folding device of the type mentioned in such a way that an error signal is generated in the event of undesired or impermissible deformations of the folding mandrels, which facilitates the removal of the error.
  • the folding device is characterized by a stationary monitoring unit assigned to the folding device for monitoring deformations of the folding mandrels, the monitoring unit detecting undesired deformations of the folding mandrels and generating an error signal assigned to the relevant folding mandrel.
  • the contours or the relative position of the folding mandrels are therefore scanned without contact. Becomes With regard to the deformation of the folding mandrels, a tolerance limit is exceeded, the monitoring unit generates a Defined error signal that identifies the deformed folding mandrel. The packaging machine or folding turret is stopped for a short time in order to straighten or replace the faulty folding mandrel. There is no need for tedious and time-consuming searches for the faulty folding mandrel.
  • inductive sensors of known design are used for scanning the contours or relative positions of the folding mandrels.
  • these are arranged stationary at a short distance from the orbit of the folding mandrels, in such a way that changes in the folding mandrels can be detected and identified without contact.
  • two inductive buttons are arranged in succession in the direction of movement on the outer circumference of the movement path of the folding mandrels.
  • the inductive pushbuttons or their probes are arranged at different distances from the path of movement of the folding mandrels, such that, if the folding mandrels are correctly designed, one of the inductive pushbuttons acts on each of the folding mandrels due to the smaller distance, while the other inductive pushbutton remains unaffected due to a correspondingly larger distance.
  • both inductive pushbuttons are acted upon by the relevant folding mandrel or none of the inductive pushbuttons because the folding mandrel lies outside the effective range of both inductive pushbuttons.
  • Markings can be attached to the folding mandrels, which are scanned by the sensing elements of the monitoring device.
  • the longitudinal edges of the folding mandrels with a rectangular cross section are scanned according to the invention.
  • the sensing elements in particular inductive sensors, can also be attached to opposite sides of the orbit of the folding mandrels, that is to say radially outside and inside.
  • both inductive buttons can have the same distance from the target orbit of the folding mandrels, since deformations in one direction or the other are always detected by the inductive button provided for this purpose.
  • the inductive sensors that are preferably used are also known in the art as proximity switches. These are electronic probes that have a probe for generating an electromagnetic field. If a metallic object approaches the probe, a signal is generated as soon as the range of effectiveness (switching distance) of the proximity switch is reached. In the present exemplary embodiment, proximity switches or inductive sensors are used, the switching distance of which is 4 mm. When a (metallic) marking or a longitudinal edge of the folding mandrel selected according to the invention reaches the effective range of the inductive button, a signal is generated.
  • the exemplary embodiments shown in the drawings are concerned with the monitoring of folding members of a folding unit with regard to correct design and arrangement. Specifically, it is about a revolving folding turret 10, which is provided on the outer circumference with axially parallel folding mandrels 11. These are elongated hollow bodies made of thin-walled metallic material (sheet metal) with a rectangular cross section in the present case. The folding mandrels 11 are open at both ends. These are known and customary organs which are used above all in the manufacture of soft-cup packs for holding cigarettes. The blanks forming packs are folded on the outside of the folding mandrels 11 during the rotational movement of the folding turret 10.
  • the folding turret 10 shown as an exemplary embodiment in the present case is described in detail and illustrated in US Pat. No. 4,852,335.
  • the folding mandrels 11 are supported on one side on the folding turret 10, namely on a turret disk 12.
  • the relatively long hollow body of the folding mandrel 11 consists of thin-walled material and is therefore susceptible to mechanical loads. Deformations can therefore occur during operation of the packaging machine.
  • the monitoring unit 13 is (only) on the radially outer side of the folding turret 10 or a circular movement path of the folding mandrels 11. Accordingly, the outwardly directed contours of the folding mandrels 11 are monitored, and by contactless scanning. If changes in the shape or relative position of a folding mandrel 11 are ascertained, the monitoring unit 13 generates an error signal which is assigned to the faulty folding mandrel 11. This can be identified when the folding turret 10 is briefly stopped. The faulty folding mandrel 11 is straightened or replaced.
  • the folding mandrels 11 are marked differently, namely in particular provided with consecutive numbers.
  • a control unit to which the monitoring unit 13 is connected, contains an identification disk, the position of which corresponds to the position of the folding turret 10 and thus of the folding mandrels 11. If an error signal is now triggered by a deformed folding mandrel 11, the relative position of the folding turret 10 and thus the affected folding mandrel 11 are identified via the identification disk.
  • the packaging machine is equipped with a screen on which the folding mandrels 11 are shown. The faulty folding mandrel 11 is recognized in accordance with the identification on the screen.
  • the monitoring unit 13 is equipped with contactless sensing elements, in the present case with proximity switches or inductive buttons 14 and 15.
  • the inductive buttons are of a type known per se.
  • Each inductive button 14, 15 is provided with a probe 16, 17.
  • a magnetic field is generated in its area.
  • the magnetic field has a limited effective range (switching distance). If a metallic object enters the effective range of the inductive button 14, 15 or the probe head 16, 17, a switching process is triggered by the inductive button 14, 15.
  • the sensing elements are arranged adjacent to the free end of the folding mandrel 11, that is to say at the greatest possible distance from the turret disk 12 carrying the folding mandrels 11.
  • the inductive buttons 14, 15 or their probe heads 16, 17 are arranged at different distances from the folding mandrels 11 and their longitudinal edges 18, 19.
  • the first inductive button 14 in the direction of movement is arranged in such a way that a switching process is triggered each time the longitudinal edges 18, 19 of the correctly arranged folding mandrels 11 pass. The distance is therefore smaller with a switching distance of 4 mm selected here.
  • the inductive button 15 following in the direction of movement is at a distance from the longitudinal edges 18, 19 which is greater than the predetermined switching distance. Accordingly, no signal is triggered by this inductive button 15 if the folding mandrels 11 are formed correctly.
  • the monitoring unit 13 triggers an error signal.
  • an error signal in the event of undesired deformation of a folding mandrel 11 is assigned to the relevant folding mandrel 11. These are marked appropriately, e.g. numbered consecutively. It is therefore easy to identify the faulty folding mandrel when the folding turret 10 is stationary.
  • the monitoring unit 13 can be designed in various ways. However, it makes sense to accommodate the inductive buttons 14, 15 in a largely closed housing 22. This is supported on the machine frame via a support arm 23.
  • the largely closed housing 22 is provided in the region of a housing wall 24 facing the folding mandrels 11 with an opening 25 for the passage of the inductive button 14, 15 or the probe head 16, 17.
  • a special holder for the inductive buttons 14, 15 is provided within the housing 22. It is a spring element, in the present case a leaf spring 26, which is fixed in the housing 22 under a certain preload is.
  • the inductive sensor 14, 15 is connected to the leaf spring (26) adjacent to the free end.
  • the free end of the leaf spring 26 is adjustable by means of an actuating element which can be actuated from the outside, namely by a grub screw 27, and is therefore precisely adjustable with regard to the distance.
  • An electrical line 28 is connected to each inductive button 14, 15, on the one hand for the power supply and on the other hand for switching lines.
  • FIGS. 4 and 5 show an alternative with regard to the design of the monitoring unit 13.
  • (two) inductive sensors 29, 30 are arranged on opposite sides of the orbit of the folding mandrels 11. This makes the switching process easier.
  • the inductive buttons 29, 30 can have the same distance from the path of movement of the (correct) folding mandrels 11. This distance can either be in the range of the switching distance or outside of it. Deformations in one direction or the other lead to a change in the switching behavior of at least one inductive button 29, 30.
  • all four longitudinal edges 18, 21 are effective for monitoring the position or shape of the folding mandrel 11.
  • the inductive buttons 29, 30 are accommodated in a U-shaped housing 31, in each case in one leg 32 or 33 of the same.
  • the mounting of the inductive buttons 29, 30 corresponds to the exemplary embodiment according to FIGS. 2 and 3.
  • the monitoring unit 13 is not switched on continuously, but is controlled so that only the longitudinal edges 18, 19 and 20, 21 of the folding mandrels 11 are scanned.
  • the inductive buttons 14, 15 and 29, 30 are supplied with current.

Landscapes

  • Wrapping Of Specific Fragile Articles (AREA)
  • Making Paper Articles (AREA)

Claims (14)

  1. Dispositif de pliage, en particulier revolver de pliage, pour la fabrication de paquets à partir d'au moins un flan pliable, de préférence de paquets de cigarettes à godet souple avec des mandrins de pliage soumis à un mouvement rotatif, montés d'un côté, pour les flans respectivement les paquets, caractérisé par un groupe de surveillance (13), localement fixe, associé au dispositif de pliage (10), pour assurer la surveillance des déformations des mandrins de pliage (11), le groupe de surveillance (13) déterminant l'occurrence de déformation indésirable des mandrins de pliage (11) et produisant un signal de défaut associé au mandrin de pliage (11) concerné.
  2. Dispositif selon la revendication 1, caractérise en ce que le contour et/ou la position relative de chaque mandrin de pliage (11) peut être exploré, sans contact, par le groupe de surveillance.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la position relative de saillies ou de marquages, de préférence les arêtes longitudinales extérieures (18, 19, 20, 21) des mandrins de pliage (11) de sections transversales rectangulaires peuvent être explorées dans la zone d'une extrémité libre de ces mandrins de pliage.
  4. Dispositif selon la revendication 1, caractérisé en ce que le groupe de surveillane (13) est disposé dans une zone de dispositif de pliage (10) dans laquelle les mandrins de pliage (11) ne sont pas pourvus des flans pour paquets.
  5. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le groupe de surveillance (13) présente au moins un organe de palpage, positionné de façon précise et définie par rapport à la trajectoire de circulation théorique correcte des mandrins de pliage (11), de préférence un interrupteur de proximité ou un capteur inductif (14, 15 ; 29, 30), pourvu d'une tête d'exploration (16, 17) ayant une zone fonctionnelle (espacement de commutation) délimitée de façon précise.
  6. Dispositif selon la revendication 1 ainsi que l'une ou plusieurs des autres revendications, caractérisé en ce que deux capteurs inductifs (14, 15) sont disposés de préférence parallélement et l'un derrière l'autre dans la direction de circulation en rotation des mandrins de pliage (11).
  7. Dispositif selon la revendication 6, caractérisé en ce que les capteurs inductifs (14, 15) sont disposés à des distances différentes par rapport à la trajectoire de circulation théorique des mandrins de plage (11), de manière que la trajectoire de circulation théorique de chaque arête longitudinale (18, 19) à explorer du mandrin de pliage (11) vienne en contact avec la zone fonctionnelle d'un capteur inductif (14) et ne vienne pas en contact avec la zone fonctionne le de l'autre capteur inductif (15).
  8. Dispositif selon la revendication 7, caractérisé en ce que les capteurs inductifs (14, 15) sont disposés du côté extérieur de la trajectoire de circulation des mandrins de pliage (11).
  9. Dispositif selon la revendication 1 ainsi que l'une ou plusieurs des autres revendications, caractérisé en ce que des organes d'exploration, en particulier respectivement un capteur inductif (29, 30), sont disposés sur les côtés opposés de la trajectoire de circulation des mandrins de pliage (11).
  10. Dispositif selon la revendication 9, caractérisé en ce que les capteurs inductifs (29, 30) disposés sur les côtés opposés de la trajectoire de circulation des mandrins de pliage (11) présentent le même espacement par rapport à la trajectoire de circulation théorique des mandrins de pliage (11).
  11. Dispositif selon la revendication 1, ainsi que selon une ou plusieurs des autres revendications, caractérisé en ce que les organes d'exploration, en particulier les capteurs inductifs (14, 15 ; 29, 30), sont disposés dans un support pratiquement fermé et localement fixe, en particulier un boîtier (22 ; 31), d'où sort principalement la tête d'exploration (16, 17).
  12. Dispositif selon la revendication 10, caractérisé en ce que, pour chaque capteur inductif (14, 15 ; 29, 30), est disposé un organe élastique précontraint, en particulier un ressort à lame (26), une extrémité de l'organe élastique étant reliée rigidement au boîtier (22 ; 31) et l'autre extrémité étant reliée au capteur inductif (14, 15 ; 29, 30) pour solliciter élastiquement celui-ci.
  13. Dispositif selon la revendication 12, caractérisé en ce que le côté libre de l'organe élastique (ressort a lame 26) prend appui, du fait de la précontrainte, contre un dispositif d'ajustage du boîtier (22 ; 31), en particulier d'une tige filetée (27).
  14. Dispositif selon la revendication 9, ainsi qu'une ou plusieurs des autres revendications, caractérisé en ce que le boîtier (31) est en forme de U de manière qu'une branche (32, 33) soit disposée de chaque côté de la trajectoire de déplacement des mandrins de pliage (11) et que, dans chaque branche (32, 33) se trouve, monté de façon ajustable, un capteur inductif (29, 30), les têtes d'exploration (16, 17) étant tournées l'une vers l'autre.
EP91121894A 1991-01-07 1991-12-20 Dispositif pour contrôler des mandrins Expired - Lifetime EP0494426B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4100239 1991-01-07
DE4100239A DE4100239A1 (de) 1991-01-07 1991-01-07 Faltvorrichtung zum herstellen von (zigaretten-)packungen

Publications (2)

Publication Number Publication Date
EP0494426A1 EP0494426A1 (fr) 1992-07-15
EP0494426B1 true EP0494426B1 (fr) 1995-06-14

Family

ID=6422627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91121894A Expired - Lifetime EP0494426B1 (fr) 1991-01-07 1991-12-20 Dispositif pour contrôler des mandrins

Country Status (6)

Country Link
US (1) US5176605A (fr)
EP (1) EP0494426B1 (fr)
JP (1) JP2593604B2 (fr)
BR (1) BR9200019A (fr)
CA (1) CA2058570C (fr)
DE (2) DE4100239A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4437404A1 (de) * 1994-10-19 1996-04-25 Focke & Co Faltvorrichtung, insbesondere Faltrevolver, mit Faltdorn
DE19607215A1 (de) * 1996-02-26 1997-08-28 Focke & Co Verfahren und Vorrichtung zum Herstellen von insbesondere Klappschachteln für Zigaretten
DE19641988A1 (de) * 1996-10-11 1998-04-16 Focke & Co Verpackungsmaschine mit optischen Überwachungsorganen
DE19704718A1 (de) * 1997-02-07 1998-08-13 Focke & Co Verfahren und Vorrichtung zum optoelektronischen Überwachen von Verpackungsmaterial
DE19707685A1 (de) * 1997-02-26 1998-08-27 Focke & Co Vorrichtung zum Handhaben oder Herstellen von Packungen
DE19852693A1 (de) * 1998-11-16 2000-05-18 Focke & Co Weichpackung für Zigaretten sowie Verfahren und Vorrichtung zum Herstellen derselben
DE10115563A1 (de) 2001-03-28 2002-10-02 Focke & Co Verpackungsmaschine für Zigaretten
EP1596743B1 (fr) * 2003-02-20 2008-04-09 Covidien AG Detecteur de mouvement destine a commander une sortie electrochirurgicale
DE102007004029A1 (de) * 2007-01-22 2008-07-24 Focke & Co.(Gmbh & Co. Kg) Arbeitseinrichtung für Verpackungsmaschinen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US840187A (en) * 1901-04-29 1907-01-01 American Wrapping And Box Machine Company Cigarette-packing machine.
US1159276A (en) * 1914-05-05 1915-11-02 William Rose Apparatus for making bags or containers.
US3416410A (en) * 1967-05-08 1968-12-17 Reynolds Metals Co Apparatus for and method of making a cigarette package construction or the like
DE2362771A1 (de) * 1973-12-17 1975-06-26 Hauni Werke Koerber & Co Kg Verfahren und packmaschine zum verpacken von verpackungsgut
DE3028946A1 (de) * 1979-08-02 1981-02-19 Molins Ltd Steuer- und kontrolleinrichtung fuer zigarettenverpackungsmaschinen
GB2125544B (en) * 1982-07-31 1986-01-02 Molins Plc Wear monitoring
IT1169168B (it) * 1983-02-15 1987-05-27 Gd Spa Sistema di controllo funzionale per trasduttori di ingresso di una unita' centrale di controllo e comando per macchine e/o dispositivi utilizzabili in linee di produzione e/o confezionamento di prodotti
DE3545884C2 (de) * 1985-12-23 1998-10-22 Focke & Co Vorrichtung zum Herstellen von (Zigaretten-) Packungen aus mindestens einem faltbaren Zuschnitt
IT1189918B (it) * 1986-01-27 1988-02-10 Gd Spa Dispositivo di controllo della corretta conformazione di elementi a pacchetto
EP0272337A1 (fr) * 1986-12-20 1988-06-29 Maschinenfabrik Fr. Niepmann GmbH & Co. Procédé pour contrôler la totalité et la qualité de paquets de cigarettes
JPS63183734A (ja) * 1987-01-26 1988-07-29 Daikin Ind Ltd 拡管機

Also Published As

Publication number Publication date
US5176605A (en) 1993-01-05
BR9200019A (pt) 1992-09-08
CA2058570C (fr) 1999-01-19
JP2593604B2 (ja) 1997-03-26
EP0494426A1 (fr) 1992-07-15
DE59105721D1 (de) 1995-07-20
JPH0550534A (ja) 1993-03-02
DE4100239A1 (de) 1992-07-09
CA2058570A1 (fr) 1992-07-08

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