EP0006852B1 - Method and apparatus for cutting a tube made of spirally wound bands of paper, cardboard or the like into single sections - Google Patents

Method and apparatus for cutting a tube made of spirally wound bands of paper, cardboard or the like into single sections Download PDF

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Publication number
EP0006852B1
EP0006852B1 EP78900007A EP78900007A EP0006852B1 EP 0006852 B1 EP0006852 B1 EP 0006852B1 EP 78900007 A EP78900007 A EP 78900007A EP 78900007 A EP78900007 A EP 78900007A EP 0006852 B1 EP0006852 B1 EP 0006852B1
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EP
European Patent Office
Prior art keywords
speed
drive
cutting mechanism
label strip
tube
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
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EP78900007A
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German (de)
French (fr)
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EP0006852A1 (en
Inventor
Rolf Strohband
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Guschky & Tonnesmann & Co KG GmbH
GUSCHKY AND TONNESMANN GmbH and Co KG
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Guschky & Tonnesmann & Co KG GmbH
GUSCHKY AND TONNESMANN GmbH and Co KG
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Publication of EP0006852A1 publication Critical patent/EP0006852A1/en
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    • 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
    • B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C3/00—Making tubes or pipes by feeding obliquely to the winding mandrel centre line

Definitions

  • the invention relates to a method for cutting one of several strips of paper, cardboard or the like. helically wound pipe into individual sections intended for the production of container casings and a device for carrying out this method.
  • the drive speed of the cutting unit is corrected in the method known from DE-B-1 218 275, depending on the deviation resulting from a comparison the drive speed of the cutting unit is determined with the conveying speed of the label strip.
  • the object of the invention is to avoid these disadvantages of the known prior art and to use simple means to create a method and a device of the generic type which, with little design effort, enable the respective interfaces to be quickly adapted to the changing conditions and thus avoid the occurrence of rejects.
  • the solution to this problem by the method according to the invention is characterized in that the correction variable resulting from the comparison of the drive speed of the cutting unit with the conveying speed of the label strip is used to change the speed of the winding belt by driving the cutting unit driven at unchanged speed via one of the photoelectric scanning of the label strip controlled electromagnetic clutch a positive or negative additional movement for driving the winding belt is removed, the speed of which is set in the basic setting by a small percentage less or greater than that of the cutting unit.
  • a method for cutting one of several strips of paper, cardboard or the like is. helically wound tube created in individual sections intended for the production of container sleeves, which enables an immediate correction process in the event of a deviation and thus prevents the creation of larger quantities of rejects and which requires little design effort because only a coupling has to be provided in order to initiate the additional movement for driving the winding belt in the differential gear assigned to it.
  • the drive of the winding belt is influenced, the winding belt speed in the basic setting either being a small percentage lower or a small percentage can be set larger than that of the cutting unit, so that either a positive or a negative additional movement is required to carry out the correction.
  • the device according to the invention for carrying out the method has, in accordance with that from DE-B-1 218 275, a deflection drum via which the label strip ge leads, and infinitely variable gears for both the winding belt and the cutting unit.
  • the design of the device according to the invention consists of the fact that, in addition to the deflection drum, a photoelectric scanning device for the markings of the label strip that rotates according to the drive speed of the cutting unit is arranged, and that an electromagnetic coupling is arranged between the drive of the cutting unit and the correction drive of the winding belt, which is separated from the photoelectric Scanning device is controlled and enters an additional rotary movement in the drive of the winding belt via a differential gear.
  • This device designed according to the invention has only a small number of simple components, so that there is an inexpensive and reliable design.
  • the device according to the invention enables the manufacturing process to be adapted in good time to deviations which inevitably occur, so that the formation of incorrectly cut container shells can be largely eliminated.
  • the differential gear correcting the drive of the winding belt can additionally be driven by a geared motor via an electromagnetic clutch.
  • this gear motor and the additional electromagnetic clutch if the tube diameter or the label strip is changed, the basic settings for the various drives can be changed quickly and correctly, because the main drive motor does not have to be used for adjustment, but an additional motor is available.
  • the device for producing spiral-labeled container jackets has an electric motor 1 which drives a gear 2, which can be continuously adjusted in order to set the overall machine speed.
  • a drive for a winding belt 4 which will be described below, is connected to the output shaft 3 of the transmission 2 and, on the other hand, the drive for a cutting unit 6 is via a continuously adjustable PIV transmission 5.
  • the power conversion for driving this cutting unit 6 takes place by means of a cam plate 7 and by means of a crank mechanism 8, which acts on a carriage of the cutting unit 6, not shown.
  • the label strip 10 represents the outermost layer on the tube 9, which has a specific pitch angle corresponding to the pitch angle of the strips forming the tube 9.
  • the label strip 10 is fed to the tube 9 behind the winding belt 4.
  • the label strip 10 is guided over a deflection drum 11, which has a circumference which corresponds to a whole or half a knife slide stroke of the cutting unit 6.
  • the label strip 10 is guided over almost 360 ° around the deflection drum 11 in order to bring about its slip-free entrainment when the label strip 10 is unwound from its roll by the rotating tube 9.
  • a photocell 12 is arranged on a toothed disk 13 directly adjacent to the umbilical drum 11 and has approximately the same diameter as the deflecting drum 11.
  • the photocell 12 is arranged such that it can scan markings 14 arranged on the label strip 10.
  • the photocell 12 and the toothed disk 13 accordingly form a scanning device for the markings 14 of the label strip 10.
  • the toothed disk 13 is driven together with the cam disk 7 of the cutting unit 6 by a drive shaft 15 from the PIV transmission 5, so that the scanning device with the photo cell 12 rotates together with the cam disc 7 for the cutting unit 6 at a speed which corresponds to the speed of the drive for the cutting unit 6.
  • an electromagnetic clutch 16 is connected to the drive shaft 15, which in turn is connected to a differential gear 17 via an indicated belt drive.
  • the sun gear of this differential gear 17 is fastened on a shaft which is driven by an output belt 3 of the gear 2 via an indicated belt drive. With this sun gear of the differential gear 17 mesh the planet gears, which are connected to each other via a web. At this jetty attacks a belt drive, also indicated, which receives its drive via the electromagnetic clutch 16 from the drive shaft 15.
  • the web of the differential gear 17 is in the rest position, so that the housing of the differential gear 17, which can be seen on the outside in the drawing, drives the winding belt 4 via a drive (not shown) at a speed which corresponds to the speed of the output shaft 3.
  • the housing of the differential gear 17 is normally connected to one of the two drums, which are shown in the upper right part of the drawing and via which the winding belt 4 is guided, via a belt drive (not shown in the drawing).
  • a geared motor 18 is also connected to the differential gear 17 via an electromagnetic clutch 19, which sits on the same shaft as the electromagnetic clutch 16.
  • the gear motor 18, which rotates to the right or left according to the arrow, serves to intervene in the differential gear 17 when the device is reset. This intervention takes place at the push of a button and helps to bring the printed image of the labeled tube 9 into line with the knife set of the cutting unit 6.
  • the automatic synchronization correction with the photocell 12 would take too long under certain circumstances when the device was readjusted, since when starting the cutting unit 6 could run ahead of the pipe 9, as a result of which a large number of incorrectly cut off container sleeves would be generated.
  • the drive of the winding belt 4 can only be slowed down by the differential gear 17, which is why the PIV transmission 5 is set such that the speed of the winding belt 4 is always a small percentage greater than the speed of the cutting unit 6.
  • the device shown in the drawing also has a tachometer 20 for the speed of the deflection drum 11 and a tachometer 21 for the speed of the toothed disk 13 and thus the cam 7.
  • the difference between the tachometers 20 and 21 is displayed on a device 22 for optical control.
  • the PIV gear 5 is basically used to adapt the cutting unit speed to the winding belt speed, which changes with the different diameters and pitches of the tube 9 wound from strips.
  • the PIV transmission 5 is therefore set by hand more often. This adjustment of the synchronism is facilitated if the display device 22 shows the cutting unit speed and pipe speed or deflection drum speed as a difference.
  • the setting on the PIV transmission is made in such a way that the belt speed and thus the pipe speed is always a small percentage greater than the cutting unit speed.
  • the entire path of the label strip 10 via the deflection drum 11 is available to the photocell 12 for carrying out the correction.
  • the correction is therefore carried out immediately after a deviation occurs, so that the cutting unit 6 always cuts the tube 9 at the precisely specified points.

Abstract

A process for cutting a tube (9), made of helically wound bands of paper, cardboard or the like and having a label (10) wound onto it by a winding belt (4), into individual tube sections that are used for manufacturing container cases for cans or the like, has the driving speed of a cutter (6) compared with the travelling speed of the label band (10) so as to introduce corrections in the driving speed of the cutter (6) whenever there are deviations. For carrying out the correction, a value obtained from the comparison controls the speed of the winding belt (4). A device for carrying out the process has a diverting cylinder (11) for the label band (10), a continuously variable gear drive for the winding belt (4) and the cutter (6), a photoelectric device (12), adjacent to the diverting cylinder (11) and rotating with the speed of the cutter (6) to sense control marks (4) of the label band (10), and an electromagnetic clutch (16) fitted between the drive of the cutter (6) and the drive of the winding belt (4), the clutch being controlled by the photoelectric sensing device.

Description

Die Erfindung betrifft ein Verfahren zum Zerschneiden eines aus mehreren Streifen aus Papier, Pappe od.dgl. schraubenförmig gewickelten Rohres in einzelne, zur Herstellung von Behältermänteln bestimmte Abschnitte sowie eine Vorrichtung zur Durchführung dieses Verfahrens.The invention relates to a method for cutting one of several strips of paper, cardboard or the like. helically wound pipe into individual sections intended for the production of container casings and a device for carrying out this method.

Aus der DE-B-1 218 275 ist bereits ein Verfahren zum Zerschneiden eines aus mehreren Streifen aus Papier, Pappe od.dgl. schraubenförmig gewickelten Rohres in einzelne, zur Herstellung von Behältermänteln bestimmte Abschnitte bekannt, bei dem diese Abschnitte mit einer Etikettierung versehen sind, welche auf das fertige Rohr in Form eines Etikettenstreifens aufgewickelt wird, wobei zur Erzielung der erforderlichen Übereinstimmung zwischen den einzelnen Etikettenabschnitten und den durch ein Schneidwerk erzeugten Schnittstellen die durch fotoelektrische Abtastung von in bestimmten Abständen auf dem Etikettenstreifen aufgebrachten Markierungen ermittelte Fördergeschwindigkeit des vom sich drehenden Rohr angetriebenen Etikettenstreifens mit der Antriebsgeschwindigkeit des Schneidwerks verglichen und beim Auftreten einer Abweichung eine Korrektur der Relativgeschwindigkeit zwischen dem Vorschub des Rohres und der Antriebsgeschwindigkeit des Schneidwerks vorgenommen wird.From DE-B-1 218 275 a method for cutting one of several strips of paper, cardboard or the like is already. helically wound tube into individual sections intended for the production of container sleeves, in which these sections are provided with a label which is wound onto the finished tube in the form of a label strip, with the aim of achieving the required agreement between the individual label sections and the one by one Interfaces produced interfaces compared the conveying speed of the label strip driven by the rotating tube, determined by photoelectric scanning of markings applied at certain intervals on the label strip, with the drive speed of the cutter and, if a deviation occurred, a correction of the relative speed between the feed of the tube and the drive speed of the cutter is made.

Um das wendelförmig etikettierte Rohr an den durch die Etikettierung vorgegebenen Stellen in einzelne Abschnitte zu zerschneiden, wird bei dem aus der DE-B-1 218 275 bekannten Verfahren die Antriebsgeschwindigkeit des Schneidwerks korrigiert, und zwar in Abhängigkeit von der Abweichung, die aus einem Vergleich der Antriebsgeschwindigkeit des Schneidwerks mit der Fördergeschwindigkeit des Etikettenstreifens ermittelt wird.In order to cut the helically labeled tube into individual sections at the locations specified by the labeling, the drive speed of the cutting unit is corrected in the method known from DE-B-1 218 275, depending on the deviation resulting from a comparison the drive speed of the cutting unit is determined with the conveying speed of the label strip.

Diese bekannte Massnahme zur Anpassung der Schnittstellen an die beim Herstellungsvorgang unvermeidbaren Änderungen, die sich insbesondere durch Schlupf des Wickelriemens, Durchmesseränderungen des erzeugten Rohres sowie durch Steigungs- und Längenänderungen des Etikettenstreifens aufgrund schwankender Temperatur und Luftfeuchtigkeit entstehen, erfordern nicht nur einen grossen apparativen Aufwand für die Änderung der Antriebsgeschwindigkeit des Schneidwerks, sondern besitzen auch den Nachteil, dass die Anpassung verhältnismässig spät erfolgt, so dass ein grosser Ausschuss an geschnittenen Behältermänteln nicht vermieden werden kann.This known measure for adapting the interfaces to the inevitable changes during the manufacturing process, which arise in particular due to slippage of the winding belt, changes in diameter of the tube produced and changes in the slope and length of the label strip due to fluctuating temperature and air humidity, not only require a large expenditure on equipment for the Changing the drive speed of the cutting unit, but also have the disadvantage that the adjustment takes place relatively late, so that a large scrap of cut container sleeves can not be avoided.

Der Erfindung liegt die Aufgabe zugrunde, diese Nachteile des bekannten Standes der Technik zu vermeiden und mit einfachen Mitteln ein Verfahren und eine Vorrichtung der gattungsgemässen Art zu schaffen, die mit geringem konstruktiven Aufwand eine schnelle Anpassung der jeweiligen Schnittstellen an die sich ändernden Verhältnisse ermöglichen und damit das Entstehen von Ausschuss vermeiden.The object of the invention is to avoid these disadvantages of the known prior art and to use simple means to create a method and a device of the generic type which, with little design effort, enable the respective interfaces to be quickly adapted to the changing conditions and thus avoid the occurrence of rejects.

Die Lösung dieser Aufgabenstellung durch das erfindungsgemässe Verfahren ist dadurch gekennzeichnet, dass die aus dem Vergleich der Antriebsgeschwindigkeit des Schneidwerks mit der Fördergeschwindigkeit des Etikettenstreifens herrührende Korrekturgrösse zur Veränderung der Geschwindigkeit des Wickelriemens verwendet wird, indem dem Antrieb des mit unveränderter Geschwindigkeit angetriebenen Schneidwerks über eine von der fotoelektrischen Abtastung des Etikettenstreifens gesteuerte elektromagnetische Kupplung eine positive oder negative Zusatzbewegung für den Antrieb des Wickelriemens entnommen wird, dessen Geschwindigkeit in der Grundeinstellung um einen kleinen Prozentsatz geringer bzw. grösser als die des Schneidwerks eingestellt ist.The solution to this problem by the method according to the invention is characterized in that the correction variable resulting from the comparison of the drive speed of the cutting unit with the conveying speed of the label strip is used to change the speed of the winding belt by driving the cutting unit driven at unchanged speed via one of the photoelectric scanning of the label strip controlled electromagnetic clutch a positive or negative additional movement for driving the winding belt is removed, the speed of which is set in the basic setting by a small percentage less or greater than that of the cutting unit.

Mit diesem erfindungsgemässen Vorschlag wird ein Verfahren zum Zerschneiden eines aus mehreren Streifen aus Papier, Pappe od.dgl. schraubenförmig gewickelten Rohres in einzelne, zur Herstellung von Behältermänteln bestimmte Abschnitte geschaffen, das bei Auftreten einer Abweichung einen sofortigen Korrekturvorgang ermöglicht und damit das Entstehen grösserer Mengen von Ausschuss verhindert und das nur einen geringen konstruktiven Aufwand erfordert, weil lediglich eine Kupplung vorgesehen werden muss, um die Zusatzbewegung für den Antrieb des Wickelriemens in das diesem zugeordnete Differentialgetriebe einzuleiten. Nach der Erfindung wird demzufolge keine Korrektur des Antriebs des Schneidwerks vorgenommen, sondern vielmehr ausgehend von einer Geschwindigkeitsabweichung zwischen zwei einander direkt proportionalen Grössen des Systems der Antrieb des Wickelriemens beeinflusst, wobei die Wickelriemengeschwindigkeit in der Grundeinstellung entweder um einen kleinen Prozentsatz geringer oder um einen kleinen Prozentsatz grösser als die des Schneidwerks eingestellt sein kann, so dass entweder eine positive oder eine negative Zusatzbewegung zur Durchführung der Korrektur erforderlich ist.With this proposal according to the invention, a method for cutting one of several strips of paper, cardboard or the like is. helically wound tube created in individual sections intended for the production of container sleeves, which enables an immediate correction process in the event of a deviation and thus prevents the creation of larger quantities of rejects and which requires little design effort because only a coupling has to be provided in order to initiate the additional movement for driving the winding belt in the differential gear assigned to it. According to the invention, therefore, no correction of the drive of the cutting unit is carried out, but rather, based on a speed deviation between two directly proportional variables of the system, the drive of the winding belt is influenced, the winding belt speed in the basic setting either being a small percentage lower or a small percentage can be set larger than that of the cutting unit, so that either a positive or a negative additional movement is required to carry out the correction.

Aus der US-A-3 942 418 war zwar bereits ein Verfahren bekannt, mit dem die Geschwindigkeit des Wickelriemens durch fotoelektrische Abtastung des fertiggewickelten Rohres zur Veränderung der Schnittstellen gesteuert wird. Bei diesem bekannten Verfahren befinden sich die Fotozellen jedoch unmittelbar am Schneidwerk, so dass das bereits fertiggewickelte Rohr erst unmittelbar vor dem Schneidvorgang abgetastet werden kann, wogegen bei dem erfindungsgemässen Verfahren die Abtastung bereits bei der Zufuhr des Etikettenstreifens zum Rohr erfolgt, wodurch mittels einer rechtzeitigen Korrektur bereits das Auftreten von Fehlern vermieden werden kann.From US-A-3 942 418, a method was already known with which the speed of the winding belt is controlled by photoelectric scanning of the completely wound tube to change the interfaces. In this known method, however, the photocells are located directly on the cutting unit, so that the already finished tube can only be scanned immediately before the cutting process, whereas in the method according to the invention the scanning is already carried out when the label strip is fed to the tube, which means that a timely correction is made the occurrence of errors can already be avoided.

Die erfindungsgemässe Vorrichtung zur Durchführung des Verfahrens besitzt in Übereinstimmung mit der aus der DE-B-1 218 275 eine Umlenktrommel, über die der Etikettenstreifen geführt wird, und stufenlos verstellbare Getriebe sowohl für den Wickelriemen als auch für das Schneidwerk. Die erfindungsgemässe Ausbildung der Vorrichtung besteht darin, dass neben der Umlenktrommel eine entsprechend der Antriebsgeschwindigkeit des Schneidwerks umlaufende fotoelektrische Abtasteinrichtung für die Markierungen des Etikettenstreifens angeordnet ist und dass zwischen dem Antrieb des Schneidwerks und dem Korrekturantrieb des Wickelriemens eine elektromagnetische Kupplung angeordnet ist, die von der fotoelektrischen Abtasteinrichtung gesteuert wird und über ein Differentialgetriebe eine zusätzliche Drehbewegung in den Antrieb des Wickelriemens eingibt.The device according to the invention for carrying out the method has, in accordance with that from DE-B-1 218 275, a deflection drum via which the label strip ge leads, and infinitely variable gears for both the winding belt and the cutting unit. The design of the device according to the invention consists of the fact that, in addition to the deflection drum, a photoelectric scanning device for the markings of the label strip that rotates according to the drive speed of the cutting unit is arranged, and that an electromagnetic coupling is arranged between the drive of the cutting unit and the correction drive of the winding belt, which is separated from the photoelectric Scanning device is controlled and enters an additional rotary movement in the drive of the winding belt via a differential gear.

Diese erfindungsgemäss ausgebildete Vorrichtung besitzt nur eine geringe Anzahl von einfachen Bauteilen, so dass sich eine preiswerte und funktionssichere Ausführung ergibt. Insbesondere ermöglicht die erfindungsgemässe Vorrichtung eine rechtzeitige Anpassung des Herstellvorganges an unvermeidbar auftretende Abweichungen, so dass das Entstehen von fehlerhaft geschnittenen Behältermänteln weitgehend ausgeschaltet werden kann.This device designed according to the invention has only a small number of simple components, so that there is an inexpensive and reliable design. In particular, the device according to the invention enables the manufacturing process to be adapted in good time to deviations which inevitably occur, so that the formation of incorrectly cut container shells can be largely eliminated.

Um die Grundeinstellung der erfindungsgemässen Vorrichtung zu erleichtern, kann gemäss einem weiteren Merkmal der Erfindung das den Antrieb des Wickelriemens korrigierende Differentialgetriebe zusätzlich über eine elektromagnetische Kupplung von einem Getriebemotor antreibbar sein. Über diesen Getriebemotor und die zusätzliche elektromagnetische Kupplung lässt sich bei einer Änderung des Rohrdurchmessers oder des Etikettenstreifens eine schnelle und korrekte Veränderung der Grundeinstellung für die verschiedenen Antriebe durchführen, weil zur Verstellung nicht auf den Hauptantriebsmotor zurückgegriffen werden muss, sondern ein zusätzlicher Motor zur Verfügung steht.In order to facilitate the basic setting of the device according to the invention, according to a further feature of the invention, the differential gear correcting the drive of the winding belt can additionally be driven by a geared motor via an electromagnetic clutch. With this gear motor and the additional electromagnetic clutch, if the tube diameter or the label strip is changed, the basic settings for the various drives can be changed quickly and correctly, because the main drive motor does not have to be used for adjustment, but an additional motor is available.

Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung der Zeichnung, die schematisch eine erfindungsgemässe Vorrichtung zeigt. Die Vorrichtung zur Herstellung spiraletikettierter Behältermäntel weist einen Elektromotor 1 auf, der ein Getriebe 2 antreibt, welches sich stufenlos verstellen lässt, um die Maschinengeschwindigkeit insgesamt einzustellen. An die Ausgangswelle 3 des Getriebes 2 ist einerseits ein nachfolgend noch zu beschreibender Antrieb für einen Wickelriemen 4 angeschlossen und anderseits über ein stufenlos einstellbares PIV-Getriebe 5 der Antrieb für ein Schneidwerk 6. Die Kraftumsetzung für den Antrieb dieses Schneidwerkes 6 erfolgt mittels einer Kurvenscheibe 7 und mittels eines Kurbeltriebs 8, der auf einen nichtdargestellten Schlitten des Schneidwerks 6 wirkt.Further details, features and advantages of the invention result from the following description of the drawing, which schematically shows a device according to the invention. The device for producing spiral-labeled container jackets has an electric motor 1 which drives a gear 2, which can be continuously adjusted in order to set the overall machine speed. On the one hand, a drive for a winding belt 4, which will be described below, is connected to the output shaft 3 of the transmission 2 and, on the other hand, the drive for a cutting unit 6 is via a continuously adjustable PIV transmission 5. The power conversion for driving this cutting unit 6 takes place by means of a cam plate 7 and by means of a crank mechanism 8, which acts on a carriage of the cutting unit 6, not shown.

Mittels des in der rechten oberen Ecke der Zeichnung dargestellten Wickelriemens 4 werden in der Zeichnung angedeutete Streifen aus Papier oder Pappe zur Bildung eines schraubenförmig gewickelten Rohres 9 auf einen ebenfalls angedeuteten Dorn aufgewickelt. Auf das schraubenförmig aus verschiedenen Streifen gewickelte Rohr 9 wird ein Etikettenstreifen 10 ebenfalls wendelförmig aufgewickelt. Dieser Etikettenstreifen 10 ist im linken Teil der Zeichnung während seiner Zufuhr zum Rohr 9 gezeigt, obwohl die Entstehung des Rohres 9 in der rechten oberen Ecke der Zeichnung dargestellt ist und das mit dem Etikettenstreifen 10 versehene Rohr 9 unten in der Mitte der Zeichnung zu erkennen ist. Diese Zeichnungsteile sind wegen der einfacheren Darstellung der erfindungsgemässen Vorrichtung nicht in ihrer tatsächlichen Zuordnung, sondern nur schematisch dargestellt, zumal sie bekannt sind.By means of the winding belt 4 shown in the upper right corner of the drawing, strips of paper or cardboard indicated in the drawing are wound onto a mandrel, also indicated, to form a helically wound tube 9. A label strip 10 is also wound helically onto the tube 9 wound helically from different strips. This label strip 10 is shown in the left part of the drawing while it is being fed to the tube 9, although the formation of the tube 9 is shown in the upper right corner of the drawing and the tube 9 provided with the label strip 10 can be seen in the lower center of the drawing . Because of the simpler representation of the device according to the invention, these drawing parts are not shown in their actual assignment, but only schematically, especially since they are known.

Der Etikettenstreifen 10 stellt auf dem Rohr 9 die äusserste Schicht dar, die einen bestimmten Steigungswinkel entsprechend dem Steigungswinkel der das Rohr 9 bildenden Streifen besitzt. Auf der Aussenseite des Rohres 9 befindet sich daher eine Folge von gleichen Etiketten, die nach dem Zerschneiden des Rohres 9 durch das Schneidwerk 6 eine Vielzahl einzelner etikettierter Rohrabschnitte bilden, welche zur Herstellung von zylindrischen Behältern verwendet werden. Diese Behältermäntel sind im mittleren unteren Teil der Zeichnung zu erkennen.The label strip 10 represents the outermost layer on the tube 9, which has a specific pitch angle corresponding to the pitch angle of the strips forming the tube 9. On the outside of the tube 9 there is therefore a sequence of identical labels which, after the tube 9 has been cut by the cutter 6, form a multiplicity of individual labeled tube sections which are used for the production of cylindrical containers. These container casings can be seen in the lower middle part of the drawing.

Die Zuführung des Etikettenstreifens 10 zum Rohr 9 erfolgt beim dargestellten Ausführungsbeispiel hinter dem Wickelriemen 4. Der Etikettenstreifen 10 wird über eine Umlenktrommel 11 geführt, die einen Umfang hat, der einem ganzen oder einem halben Messerschlittenhub des Schneidwerks 6 entspricht. Der Etikettenstreifen 10 ist über nahezu 360° um die Umlenktrommel 11 geführt, um deren schlupffreie Mitnahme zu bewirken, wenn der Etikettenstreifen 10 durch das sich drehende Rohr 9 von seiner Rolle abgewikkelt wird.In the exemplary embodiment shown, the label strip 10 is fed to the tube 9 behind the winding belt 4. The label strip 10 is guided over a deflection drum 11, which has a circumference which corresponds to a whole or half a knife slide stroke of the cutting unit 6. The label strip 10 is guided over almost 360 ° around the deflection drum 11 in order to bring about its slip-free entrainment when the label strip 10 is unwound from its roll by the rotating tube 9.

Direkt benachbart zurUmienktrommei 11 ist eine Fotozelle 12 an einer Zahnscheibe 13 angeordnet, die etwa denselben Durchmesser wie die Umlenktrommel 11 hat. Die Fotozelle 12 ist derart angeordnet, dass sie auf dem Etikettenstreifen 10 angeordnete Markierungen 14 abtasten kann. Die Fotozelle 12 und die Zahnscheibe 13 bilden demgemäss eine Abtasteinrichtung für die Markierungen 14 des Etikettenstreifens 10. Die Zahnscheibe 13 wird gemeinsam mit der Kurvenscheibe 7 des Schneidwerks 6 durch eine Antriebswelle 15 vom PIV-Getriebe 5 angetrieben, so dass die Abtasteinrichtung mit der Fotozelle 12 zusammen mit der Kurvenscheibe 7 für das Schneidwerk 6 mit einer Geschwindigkeit rotiert, welche der Geschwindigkeit des Antriebs für das Schneidwerk 6 entspricht.A photocell 12 is arranged on a toothed disk 13 directly adjacent to the umbilical drum 11 and has approximately the same diameter as the deflecting drum 11. The photocell 12 is arranged such that it can scan markings 14 arranged on the label strip 10. The photocell 12 and the toothed disk 13 accordingly form a scanning device for the markings 14 of the label strip 10. The toothed disk 13 is driven together with the cam disk 7 of the cutting unit 6 by a drive shaft 15 from the PIV transmission 5, so that the scanning device with the photo cell 12 rotates together with the cam disc 7 for the cutting unit 6 at a speed which corresponds to the speed of the drive for the cutting unit 6.

Auf der der Zahnscheibe 13 abgewandten Seite der Kurvenscheibe 7 ist mit der Antriebswelle 15 eine elektromagnetische Kupplung 16 verbunden, welche ihrerseits über einen angedeuteten Riementrieb mit einem Differentialgetriebe 17 in Verbindung steht. Das Sonnenrad dieses Differentialgetriebes 17 ist auf einer Welle befestigt, die über einen angedeuteten Riementrieb von der Ausgangsweiie 3 des. Getriebes 2,angetrieben ist. Mit diesem Sonnenrad des Differentialgetriebes 17 kämmen die Planetenräder, die über einen Steg miteinander verbunden sind. An diesem Steg greift ein ebenfalls angedeuteter Riementrieb an, der seinen Antrieb über die elektromagnetische Kupplung 16 von der Antriebswelle 15 erhält. Normalerweise befindet sich der Steg des Differentialgetriebes 17 in der Ruhelage, so dass das in der Zeichnung aussen erkennbare Gehäuse des Differentialgetriebes 17 über einen nichtdargestellten Antrieb den Wickelriemen 4 mit einer Geschwindigkeit antreibt, der der Geschwindigkeit der Ausgangswelle 3 entspricht. Normalerweise steht zu diesem Zweck das Gehäuse des Differentialgetriebes 17 über einen auf der Zeichnung nichtdargestellten Riementrieb mit einer der beiden Trommeln in Verbindung, die im rechten oberen Teil der Zeichnung dargestellt sind und über die der Wickelriemen 4 geführt ist.On the side of the cam disk 7 facing away from the toothed disk 13, an electromagnetic clutch 16 is connected to the drive shaft 15, which in turn is connected to a differential gear 17 via an indicated belt drive. The sun gear of this differential gear 17 is fastened on a shaft which is driven by an output belt 3 of the gear 2 via an indicated belt drive. With this sun gear of the differential gear 17 mesh the planet gears, which are connected to each other via a web. At this jetty attacks a belt drive, also indicated, which receives its drive via the electromagnetic clutch 16 from the drive shaft 15. Normally, the web of the differential gear 17 is in the rest position, so that the housing of the differential gear 17, which can be seen on the outside in the drawing, drives the winding belt 4 via a drive (not shown) at a speed which corresponds to the speed of the output shaft 3. For this purpose, the housing of the differential gear 17 is normally connected to one of the two drums, which are shown in the upper right part of the drawing and via which the winding belt 4 is guided, via a belt drive (not shown in the drawing).

Wie ganz rechts in der Zeichnung dargestellt ist, ist ferner an das Differentialgetriebe 17 ein Getriebemotor 18 über eine elektromagnetische Kupplung 19 angeschlossen, welche auf derselben Welle wie die elektromagnetische Kupplung 16 sitzt. Der gemäss dem Pfeil rechts- oder linksdrehende Getriebemotor 18 dient dazu, bei Neueinstellung der Vorrichtung in das Differentialgetriebe 17 einzugreifen. Dieses Eingreifen geschieht per Knopfdruck und hilft, das Druckbild des etikettierten Rohres 9 in Einklang mit dem Messersatz des Schneidwerks 6 zu bringen. Die automatische Gleichlaufkorrektur mit der Fotozelle 12 würde bei einer Neueinstellung der Vorrichtung unter Umständen zu lange dauern, da beim Anfahren das Schneidwerk 6 dem Rohr 9 vorauseilen könnte, wodurch sehr viele fehlerhaft abgeschnittene Behältermäntel erzeugt würden. Bei der dargestellten Ausführungsform der Vorrichtung kann der Antrieb des Wickelriemens 4 durch das Differentialgetriebe 17 nur verlangsamt werden, weshalb das PIV-Getriebe 5 derart eingestellt ist, dass die Geschwindigkeit des Wickelriemens 4 stets um einen kleinen Prozentsatz grösser als die Geschwindigkeit des Schneidwerks 6 ist.As shown on the far right in the drawing, a geared motor 18 is also connected to the differential gear 17 via an electromagnetic clutch 19, which sits on the same shaft as the electromagnetic clutch 16. The gear motor 18, which rotates to the right or left according to the arrow, serves to intervene in the differential gear 17 when the device is reset. This intervention takes place at the push of a button and helps to bring the printed image of the labeled tube 9 into line with the knife set of the cutting unit 6. The automatic synchronization correction with the photocell 12 would take too long under certain circumstances when the device was readjusted, since when starting the cutting unit 6 could run ahead of the pipe 9, as a result of which a large number of incorrectly cut off container sleeves would be generated. In the illustrated embodiment of the device, the drive of the winding belt 4 can only be slowed down by the differential gear 17, which is why the PIV transmission 5 is set such that the speed of the winding belt 4 is always a small percentage greater than the speed of the cutting unit 6.

Die auf der Zeichnung dargestellte Vorrichtung besitzt weiterhin einen Drehzahlmesser 20 für die Drehzahl der Umlenktrommel 11 und einen Drehzahlmesser 21 für die Drehzahl der Zahnscheibe 13 und damit die Kurvenscheibe 7. Die Differenz der Drehzahlmesser 20 und 21 wird an einem Gerät 22 zur optischen Kontrolle angezeigt. Hierdurch kann ein Eingriff von Hand in das PIV-Getriebe 5 zur Verstellung der Schneidwerksgeschwindigkeit vorgenommen werden, wie schematisch in der Zeichnung angedeutet ist. Das PIV-Getriebe 5 dient grundsätzlich der Anpassung der Schneidwerksgeschwindigkeit an die Wickelriemengeschwindigkeit, die sich bei den verschiedenen Durchmessern und Steigungen des aus Streifen gewickelten Rohres 9 ändert. Das PIV-Getriebe 5 wird daher öfter von Hand eingestellt. Diese Einstellung des Gleichlaufs wird erleichtert, wenn das Anzeigegerät 22 die Schneidwerksgeschwindigkeit und Rohrgeschwindigkeit bzw. Umlenktrommelgeschwindigkeit als Differenz anzeigt.The device shown in the drawing also has a tachometer 20 for the speed of the deflection drum 11 and a tachometer 21 for the speed of the toothed disk 13 and thus the cam 7. The difference between the tachometers 20 and 21 is displayed on a device 22 for optical control. This allows manual intervention in the PIV transmission 5 to adjust the cutting mechanism speed, as indicated schematically in the drawing. The PIV gear 5 is basically used to adapt the cutting unit speed to the winding belt speed, which changes with the different diameters and pitches of the tube 9 wound from strips. The PIV transmission 5 is therefore set by hand more often. This adjustment of the synchronism is facilitated if the display device 22 shows the cutting unit speed and pipe speed or deflection drum speed as a difference.

Die Einstellung am PIV-Getriebe wird beim Ausführungsbeispiel so vorgenommen, dass die Riemengeschwindigkeit und damit die Rohrgeschwindigkeit stets um einen kleinen Prozentsatz grösser als die Schneidwerksgeschwindigkeit ist.In the exemplary embodiment, the setting on the PIV transmission is made in such a way that the belt speed and thus the pipe speed is always a small percentage greater than the cutting unit speed.

Hierdurch ist es zur Erzielung des Gleichlaufs lediglich erforderlich, die Riemengeschwindigkeit zu verringern. Eine derartige Korrektur wird automatisch vorgenommen, und zwar wie folgt:

  • Der Etikettenstreifen 10 läuft über die Umlenktrommel 11, neben der die Fotozelle 12 mit der Geschwindigkeit der Kurvenscheibe 7 rotiert. Die Fotozelle 12 tastet hierbei die Rohrabschnittslänge der auf dem Etikettenstreifen 10 angebrachten Markierungen 14 ab. Rotiert die Fotozelle 12 nicht mit der gleichen Geschwindigkeit wie die Markierung 14 auf dem Etikettenstreifen 10, gibt sie einen Impuls über einen Verstärker an die Elektromagnetkupplung 16, die das Differentialgetriebe 17 an die Antriebswelle 15 ankuppelt und eine zusätzliche Drehbewegung in das Differentialgetriebe 17 eingibt. Diese zusätzliche Bewegung im Differentialgetriebe 17 verlangsamt die Antriebsgeschwindigkeit des Wickelriemens 4.
All that is required to achieve synchronism is to reduce the belt speed. Such a correction is made automatically, as follows:
  • The label strip 10 runs over the deflection drum 11, next to which the photocell 12 rotates at the speed of the cam 7. The photocell 12 scans the pipe section length of the markings 14 made on the label strip 10. If the photocell 12 does not rotate at the same speed as the marking 14 on the label strip 10, it gives an impulse via an amplifier to the electromagnetic clutch 16, which couples the differential gear 17 to the drive shaft 15 and inputs an additional rotary movement into the differential gear 17. This additional movement in the differential gear 17 slows down the drive speed of the winding belt 4.

Zur Durchführung der Korrektur steht der Fotozelle 12 der gesamte Weg des Etikettenstreifens 10 über die Umlenktrommel 11 zur Verfügung. Die Korrektur wird daher sofort nach Auftreten einer Abweichung vorgenommen, so dass das Schneidwerk 6 das Rohr 9 immer an den genau vorgegebenen Stellen zerschneidet.The entire path of the label strip 10 via the deflection drum 11 is available to the photocell 12 for carrying out the correction. The correction is therefore carried out immediately after a deviation occurs, so that the cutting unit 6 always cuts the tube 9 at the precisely specified points.

Claims (3)

1. Method for cutting a tube (9) helically wound from a plurality of strips of paper, board or the like into individual sections suitable for the manufacture of container covers, which are provided with labelling, which is wound on to the completed tube (9) in the form of a label strip (10), for the provision of the required synchronization between the individual label sections and the cutting locations produced by a cutting mechanism (6) which compares the advancing speed of the label strip (10) rotating the tube (9) with the operating speed of the cutting mechanism (6) by photoelectric sensing of markings (14) applied to the label strip (10) at predetermined spacings, and on the generation of an error signal a correction to the relative speed between the displacement of the tube (9) and the driving speed of the cutting mechanism (6) is applied, characterised in this that, the error signal produced by the comparison of the operating speed of the cutting mechanism (6) with the advancing speed of the label strip (10) is used for the adjustment of the speed of the wrapping belt (4), in which the drive of the cutting mechanism (6) driven at an unchanged speed is derived through an electromagnetic coupling (16) controlled by the photoelectric sensing of the label strip (10) with a positive or negative additional motion for the drive of the wrapping belt (4), of which the speed is adjusted from a basic adjustment by a small percentage value which is smaller or respectively larger than that of the cutting mechanism (6).
2. Apparatus for carrying out the method according to claim 1, with a guide drum (11) for the label strip (10) and a steplessly variable drive (2) both for the wrapping belt (4) as well as for the cutting mechanism (6), characterised in this that, adjacent to the guide drum (11) a photoelectric sensing device (photocell 12) for the markings (14) of the label strip (10) is arranged to be rotatable at a speed corresponding to the drive speed of the cutting mechanism (6) and that between the drive of the cutting mechanism (6) and the correcting drive of the wrapping belt (4) an electromagnetic coupling (16) is arranged, which is controlled by the photoelectric sensing device (photocell 12), and delivers through a differential drive (17) an additional rotational movement to the drive of the wrapping belt (4).
3. Apparatus according to claim 2, characterised in this that the differential gear (17) correcting the drive of the wrapping belt (4) is drivable in addition through an electromagnetic coupling (19) from a drive motor (18).
EP78900007A 1977-06-03 1978-06-02 Method and apparatus for cutting a tube made of spirally wound bands of paper, cardboard or the like into single sections Expired EP0006852B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2725116A DE2725116C2 (en) 1977-06-03 1977-06-03 Spiral labeling
DE2725116 1977-06-03

Publications (2)

Publication Number Publication Date
EP0006852A1 EP0006852A1 (en) 1980-01-23
EP0006852B1 true EP0006852B1 (en) 1982-05-05

Family

ID=6010648

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78900007A Expired EP0006852B1 (en) 1977-06-03 1978-06-02 Method and apparatus for cutting a tube made of spirally wound bands of paper, cardboard or the like into single sections

Country Status (11)

Country Link
US (1) US4256027A (en)
EP (1) EP0006852B1 (en)
JP (1) JPS602981B2 (en)
AR (1) AR227871A1 (en)
AT (1) AT359819B (en)
BE (1) BE867790A (en)
DE (1) DE2725116C2 (en)
ES (1) ES470471A1 (en)
IT (1) IT1096458B (en)
NL (1) NL7805953A (en)
WO (1) WO1978000008A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384500A (en) * 1980-11-20 1983-05-24 Owens-Illinois, Inc. Registration control for a label cutoff apparatus
DE3428005A1 (en) * 1984-07-28 1986-01-30 Christian Majer GmbH & Co KG Maschinenfabrik, 7400 Tübingen DEVICE ON A FILM TUBE WINDING MACHINE FOR CONTROLLING A CUTTING DEVICE
JPS63111886U (en) * 1987-01-09 1988-07-18
SE9503560D0 (en) * 1995-10-11 1995-10-11 Ingmar Andreasson Pallet
US6378763B1 (en) 1999-06-04 2002-04-30 Sonoco Development, Inc. Window for spirally formed containers
CA2901692A1 (en) * 2013-02-21 2014-08-28 The Procter & Gamble Company Fibrous cores
CN108053496B (en) * 2017-12-11 2020-08-28 靳职雄 Ticket self-selling system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3150574A (en) * 1961-08-01 1964-09-29 Robinson & Sons Ltd Method and apparatus for cutting spirally wound tubes in accurate register
FR1348565A (en) * 1961-12-13 1964-04-10
US3220320A (en) * 1962-07-24 1965-11-30 Continental Can Co Apparatus for manufacturing spirally wound containers
US3158074A (en) * 1963-03-28 1964-11-24 Continental Can Co Method and apparatus for manufacturing spirally wound containers without trim loss
US3428239A (en) * 1966-10-07 1969-02-18 Int Paper Co Spiral wound can for packaging beverages under substantial pressure
US3942418A (en) * 1975-03-21 1976-03-09 Container Corporation Of America Apparatus for helically winding container bodies

Also Published As

Publication number Publication date
DE2725116A1 (en) 1978-12-14
BE867790A (en) 1978-10-02
WO1978000008A1 (en) 1978-12-07
AR227871A1 (en) 1982-12-30
US4256027A (en) 1981-03-17
DE2725116C2 (en) 1985-09-12
JPS602981B2 (en) 1985-01-25
ES470471A1 (en) 1979-02-01
EP0006852A1 (en) 1980-01-23
ATA361078A (en) 1980-04-15
IT7824175A0 (en) 1978-06-02
AT359819B (en) 1980-12-10
NL7805953A (en) 1978-12-05
JPS543500A (en) 1979-01-11
IT1096458B (en) 1985-08-26

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