EP0074453B1 - Method and apparatus for manufacturing spirally wound paper tubes, and tubes produced by such a method - Google Patents

Method and apparatus for manufacturing spirally wound paper tubes, and tubes produced by such a method Download PDF

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Publication number
EP0074453B1
EP0074453B1 EP81402094A EP81402094A EP0074453B1 EP 0074453 B1 EP0074453 B1 EP 0074453B1 EP 81402094 A EP81402094 A EP 81402094A EP 81402094 A EP81402094 A EP 81402094A EP 0074453 B1 EP0074453 B1 EP 0074453B1
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EP
European Patent Office
Prior art keywords
mandrel
aforesaid
angle
winding
paper
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Expired
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EP81402094A
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German (de)
French (fr)
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EP0074453A1 (en
Inventor
Jean-Louis Meyer
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.)
Abzac SA
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Abzac SA
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Publication date
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Priority to AT81402094T priority Critical patent/ATE21498T1/en
Publication of EP0074453A1 publication Critical patent/EP0074453A1/en
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Publication of EP0074453B1 publication Critical patent/EP0074453B1/en
Expired legal-status Critical Current

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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 present invention relates and essentially relates to a method for manufacturing a tube, in particular cardboard, by helically winding a strip or several strips of paper, and a machine for implementing this process.
  • the strip of paper or cardboard or the multiple strips of paper or cardboard are partially overlapping and transversely offset with respect to each other and form a sheet.
  • the pitch for winding a strip of paper will depend on the width of said strip of paper, the diameter of the mandrel, and the value of the angle of winding of said strip of paper formed between the direction of unwinding of the paper strip and the longitudinal axis of the fixed mandrel. Therefore, the characteristics of the tube produced depend on the rolled paper, but also on the winding angle of said strip of paper.
  • a manufacturing machine comprising a fixed frame carrying the fixed mandrel and a movable frame making it possible to unwind the strip of paper or the web of strips of paper on the fixed mandrel in a direction of unwinding determined by the desired winding angle.
  • the mobile chassis of the known manufacturing machine which supports in particular a device for unwinding one or more strips of paper, a device for gluing said strips of paper and a system for positioning and guiding the strips of paper to form the sheet, is fixed in an angularly displaceable manner relative to the horizontal longitudinal axis of the mandrel by means of a mechanism (94).
  • the winding angle was adjusted manually, in other words, the direction of unwinding of the paper strips, by manual movement of the movable frame.
  • This process has many drawbacks and requires a painful and imprecise long adjustment (to several degrees) of the winding angle, in particular due to the large dimensions of the mobile chassis.
  • this adjustment was empirical because it was not possible to measure precisely the angle formed between the fictitious axis of pivoting of the movable frame and the longitudinal axis of the mandrel (18), moreover as this adjustment is manual, it required manpower.
  • Document FR-A-2 081 031 reveals a similar teaching.
  • the main object of the present invention is to remedy these drawbacks by proposing a manufacturing method making it possible to measure and precisely control the current winding angle formed between the direction of unwinding of the paper strips and the longitudinal axis of the mandrel. , in addition to automatically controlling the angular displacement of the movable frame to obtain a current winding angle equal to the set or predetermined winding angle.
  • the subject of the invention is a method of manufacturing a tube, in particular cardboard, by helically winding a strip or several strips of paper with partial covering and transversely offset relative to each other by forming a sheet, around a fixed mandrel by rotationally driving the tube in formation, characterized in that it consists in automatically and preferably continuously adjusting the winding angle of said paper strips defined between the common direction of unwinding of said paper strips and the longitudinal axis of said mandrel, by measuring the current winding angle, by comparing the value thus measured of the current winding angle with a set value of said angle, and by controlling an angular displacement of said common direction of unwinding of the strips of paper with respect to the longitudinal axis of the mandrel so that the measured value of said winding angle is equal to the predetermined set value hermit.
  • the above-mentioned sheet of paper web is moved in a rectilinear and reversible manner in a direction perpendicular to the above-mentioned unwinding direction.
  • the paper strip at one end of the ply is wound on the above-mentioned fixed mandrel as close as possible to the mandrel holder, whatever the winding angle chosen so as not to lose space for winding between the device for rotating the forming tube and the mandrel holder.
  • the invention also relates to a machine for manufacturing cardboard tubes by helically winding a strip or several strips of paper with partial covering and transversely offset relative to each other in the form of a sheet, comprising a fixed frame supporting a mandrel. fixed winding of said strips, a system for rotating the tube in formation, a movable frame supporting in particular a device for unwinding one or more strips of paper, a device for gluing said strips of paper and a system for positioning and guiding strips of paper to form said sheet, said movable frame being mounted movable relative to said fixed frame, characterized in that it comprises a device for measuring the current winding angle of the strips of paper on the mandrel emitting a signal, a device for comparing said signal with a set value of the angle of winding of said ply on said fixed mandrel and a device for controlling the angular movement of said movable chassis controlled by said comparison device.
  • the movable chassis is connected to the fixed chassis by a coupling device articulated in rotation about a pivot axis whose fictitious axis cuts perpendicularly the longitudinal axis of the mandrel and is mounted on rolling tracks concentric with said pivot axis, the aforementioned control device ensures the operation of a reversible drive motor of at least one drive wheel of said movable chassis.
  • the axis of the fixed mandrel is substantially horizontal and the aforementioned pivot axis of the coupling of the mobile chassis is substantially vertical.
  • the aforementioned current winding angle measuring device and the aforementioned setpoint display device are potentiometer devices, advantageously the setpoint is expressed in sine of the winding angle.
  • the aforementioned movable chassis is mounted on the aforementioned coupling device so as to be displaceable by rectilinear transverse translation on said coupling device.
  • this fixing of the mobile chassis to its coupling is a screw-nut system actuated by a motor operating in synchronization with the aforementioned motor driving the driving wheel of said mobile chassis.
  • the rotational driving of the tube in. formation is constituted by an endless belt wound around said tube in formation and driven by two drums with vertical axis perpendicular to the longitudinal horizontal axis of the mandrel, carried by a mobile turret possibly in translation parallel to the longitudinal axis of the mandrel and / or movable in angular orientation relative to said longitudinal axis of the mandrel.
  • the angle formed between the horizontal perpendicular to the longitudinal axis of the mandrel and the line passing through the two vertical axes of the aforementioned drums is adjusted to determine the degree of opening or closing of the upper turn of the tube.
  • the cardboard tube manufacturing machine comprises, in a conventional manner, a fixed frame 1, and a movable frame 2 connected to the fixed frame 1 by a coupling system 3 such as a drawbar d 'metal hitch, pivotally mounted about a pivot axis 4 fixed on the fixed frame 1 and whose axis is substantially vertical and perpendicularly cuts the longitudinal x axis of the mandrel 8 which will be described below.
  • a coupling system 3 such as a drawbar d 'metal hitch
  • the mobile chassis is mounted rolling, by means of wheels 7 shown diagrammatically, on rolling tracks or rails 6 arranged concentrically with the pivot axis 4.
  • the movable chassis 2 of the manufacturing machine of the invention advantageously supports a device for unwinding a strip or several strips of paper, a device for gluing one side of these strips of paper and a positioning system and for guiding the paper strip or said paper strips to form a sheet in which the multiple strips partially overlap and are transversely offset with respect to each other.
  • These unwinding and gluing devices as well as the aforementioned positioning and guiding system are very well known in the field of manufacturing cardboard tubes and will therefore not be described in detail, moreover they are not shown in detail in Figure 1 for the sake of clarity thereof.
  • the movable frame 2 comprises fixed on its end 2a not connected to the fixed frame 1, two drive wheels 9 supporting at least one part of said movable chassis by the wheel mounting assembly 10.
  • the driving of these wheels is controlled by a motor 11 in particular an electric motor driving a transmission system 12 with cogwheels and chains, for example.
  • the chassis 2 can be moved around the pivot axis 4 on the rails 6 by rotation of the ⁇ drive wheels 9, driven in movement by the motor 11 with reversible drive.
  • the mobile chassis 2 is fixed to its coupling 3 by a screw-nut system comprising an endless screw 13 and rollers 14 for rolling driven by said screw, allowing rectilinear and transverse translation of the movable chassis 2 with respect to its coupling and therefore relative to the direction of unwinding of the paper web y.
  • the drive of the worm is carried out by a motor 15, for example by a gear motor and a transmission system 16 with cogwheels-chain or pulleys-belt.
  • the fixed frame 1 comprises a mandrel holder 17 preferably fixed at one end of the fixed frame 1, a preferably cylindrical mandrel 8 fixed on the mandrel holder 17 and having a longitudinal axis x preferably substantially horizontal.
  • the mandrel 8 preferably extends over a fairly large length so as to serve as a guide support for the tube 18 of cardboard being formed during its linear movement towards the end of said mandrel 8.
  • the cardboard tube 8 in formation is rotated by an endless belt 19 wound in a simple loop around the tube in formation, preferably with its strands crossed, as illustrated in FIG. belt is driven by two drums 20 with vertical axis carried by a turret 21 movable on the one hand in translation parallel to the fixed axis of the mandrel 8 on for example slides 22 for lateral movement, and on the other hand movable in angular position relative to the longitudinal axis x of the mandrel, so that the straight line z passing through the vertical axes of the drums 20 define an angle 0, in the horizontal plane, with a perpendicular to the longitudinal x axis of the mandrel 8.
  • the angular orientation of the belt 19 and its lateral position relative to the mandrel is adjusted manually or automatically by cranks 23, 24, for example.
  • the means for controlling the angular displacement of the movable frame 2 relative to the fixed frame 1 comprise a measuring device shown schematically at 26 of the angle of winding of the paper around of the mandrel 8 or preferably the angle a defined between the direction y, preferably substantially horizontal, of the unwinding of the paper and the perpendicular in the horizontal plane to the longitudinal X axis of the mandrel 8.
  • This device which is for example a device for potentiometer, emits a signal which is applied to a comparison device 27.
  • This comparison device 27 receives a signal from a display device 28 of a set value of the angle a.
  • this display device 28 is a potentiometer device calibrated in sine value a.
  • the comparison device sends a signal to a control device 29 when the two signals sent respectively by the measuring device 26 and the display device 28 are not identical.
  • the device 29 controls the operation of the motor 11 for driving the drive wheels 9 and the angular displacement of the chassis 2 so that the current angle measured by the measuring device 26 corresponds to the set point value of the angle displayed by the display device 28.
  • the control means 29 will automatically control a movement of the movable frame 2 so that the angle a currently measured by the device 26 becomes equal to the display value. Consequently, by simply displaying the desired angle, the adjustment thereof is carried out automatically and precisely.
  • the movable fixing in transverse rectilinear translation of the chassis 2 on its coupling 3 allows, for example during a change of winding angle, to arrange the strip of paper 25 forming the end of the sheet, as close as possible to the mandrel support 17 to avoid any loss of mandrel length between the mandrel support 17 and the drive belt 19.
  • the translation drive motor 15 operates synchronously, for example by speed variation with the motor 11 for driving the driving wheels 9.
  • the present invention provides a method for adjusting automatically, precisely without manual intervention on the machine, the angle of winding of the paper strips around the fixed mandrel 8, and on the other hand, by adjusting the angle 6, in other words the inclination of the belts relative to the longitudinal axis x of the mandrel the degree of opening or closing of the last turn of paper wound on the tube in formation.
  • the present invention therefore makes it possible to automate the operation of a machine for manufacturing cardboard tubes, and mainly to allow very precise and very rapid adjustment of the angle of winding of the paper around the mandrel, as well as to maintain this constant angle throughout the manufacturing cycle.
  • the movable frame 1 can also support all the elements, devices for shaping strips of paper before they are wound around the fixed mandrel, and moreover that this movable frame can only support the guidance and positions strips of paper before winding to position them in the direction of unwinding Y.

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Abstract

The invention relates to a method and a machine for manufacturing tubes particularly of paperboard or cardboard by helical winding of a strip or of several strips of paper. This machine comprises a stationary frame supporting a stationary winding mandrel, a system for driving in rotation the tube in formation and a movable frame supporting in particular a device for positioning and guiding the paper strips to form a web, this movable frame being connected to the stationary frame by a coupling device in rotation around a swivel pin. This machine comprises operating means for angular displacement of the said movable frame monitored by a preset value of the angle of winding of the web on the stationary mandrel.

Description

La présente invention concerne et a essentiellement pour objet un procédé de fabrication de tube notamment en carton par enroulement hélicoïdal d'une bande ou plusieurs bandes de papier, et une machine pour la mise en oeuvre de ce procédé.The present invention relates and essentially relates to a method for manufacturing a tube, in particular cardboard, by helically winding a strip or several strips of paper, and a machine for implementing this process.

On sait déjà fabriquer tel que cela est décrit dans US-A-3 398 037, des tubes en carton par enroulement hélicoïdal d'une ou plusieurs bandes préencollées de papier ou de carton sur un mandrin fixe. Dans ce procédé, le tube en formation est entraîné en rotation autour d'un mandrin fixe.We already know how to manufacture, as described in US-A-3 398 037, cardboard tubes by helical winding of one or more pre-glued strips of paper or cardboard on a fixed mandrel. In this process, the forming tube is rotated around a fixed mandrel.

Dans ce procédé connu, la bande de papier ou de carton ou les bandes multiples de papier ou de carton sont à recouvrement partiel et transversalement décalées les unes par rapport aux autres et forment nappe. Ainsi, le pas d'enroulement d'une bande de papier sera fonction de la largeur de ladite bande de papier, du diamètre du mandrin, et de la valeur de l'angle d'enroulement de ladite bande de papier formée entre la direction de dévidement de la bande de papier et l'axe longitudinal du mandrin fixe. Donc, les caractéristiques du tube fabriqué sont fonction du papier enroulé, mais également de l'angle d'enroulement de ladite bande de papier.In this known method, the strip of paper or cardboard or the multiple strips of paper or cardboard are partially overlapping and transversely offset with respect to each other and form a sheet. Thus, the pitch for winding a strip of paper will depend on the width of said strip of paper, the diameter of the mandrel, and the value of the angle of winding of said strip of paper formed between the direction of unwinding of the paper strip and the longitudinal axis of the fixed mandrel. Therefore, the characteristics of the tube produced depend on the rolled paper, but also on the winding angle of said strip of paper.

Pour la mise en oeuvre de ce procédé connu, on utilise une machine de fabrication comprenant un châssis fixe portant le mandrin fixe et un châssis mobile permettant de dévider la bande de papier ou la nappe de bandes de papier sur le mandrin fixe selon une direction de dévidement déterminée par l'angle d'enroulement désiré. Pour cela, le châssis mobile de la machine de fabrication connue qui supporte notamment un dispositif de dévidement d'une ou plusieurs bandes de papier un dispositif d'encollage desdites bandes de papier et un système de positionnement et guidage des bandes de papier pour former la nappe, est fixé de manière déplaçable angulairement relativement à l'axe longitudinal horizontal du mandrin à l'aide d'un mécanisme (94). En début de chaque cycle de fabrication, on réglait manuellement l'angle d'enroulement, en d'autres termes, la direction de dévidement des bandes de papier, par un déplacement manuel du châssis mobile.For the implementation of this known method, a manufacturing machine is used comprising a fixed frame carrying the fixed mandrel and a movable frame making it possible to unwind the strip of paper or the web of strips of paper on the fixed mandrel in a direction of unwinding determined by the desired winding angle. For this, the mobile chassis of the known manufacturing machine which supports in particular a device for unwinding one or more strips of paper, a device for gluing said strips of paper and a system for positioning and guiding the strips of paper to form the sheet, is fixed in an angularly displaceable manner relative to the horizontal longitudinal axis of the mandrel by means of a mechanism (94). At the start of each manufacturing cycle, the winding angle was adjusted manually, in other words, the direction of unwinding of the paper strips, by manual movement of the movable frame.

Ce procédé présente de nombreux inconvénients et demande un réglage long pénible et imprécis (à plusieurs degrés près) de l'angle d'enroulement, notamment dû aux dimensions importantes du châssis mobile. De plus, ce réglage était empirique car il n'était pas possible de mesurer précisément l'angle formé entre l'axe fictif de pivotement du châssis mobile et l'axe longitudinal du mandrin (18), en outre comme ce réglage est manuel, cela nécessitait de la main d'ceuvre.This process has many drawbacks and requires a painful and imprecise long adjustment (to several degrees) of the winding angle, in particular due to the large dimensions of the mobile chassis. In addition, this adjustment was empirical because it was not possible to measure precisely the angle formed between the fictitious axis of pivoting of the movable frame and the longitudinal axis of the mandrel (18), moreover as this adjustment is manual, it required manpower.

Le document FR-A-2 081 031 révèle un enseignement similaire. La présente invention a pour but principal de remédier à ces inconvénients en proposant un procédé de fabrication permettant de mesurer et contrôler de manière précise l'angle d'enroulement actuel formé entre la direction de dévidement des bandes de papier et l'axe longitudinal du mandrin, de plus de commander de manière automatique le déplacement angulaire du châssis mobile pour obtenir un angle d'enroulement actuel égal à l'angle d'enroulement de consigne ou prédéterminé. Ainsi, il est possible de positionner le châssis mobile, en début de chaque cycle de fabrication et au cours du cycle de fabrication, de manière automatique sans intervention manuelle pour obtenir un angle d'enroulement déterminé, sans intervention manuelle sur ledit châssis mobile.Document FR-A-2 081 031 reveals a similar teaching. The main object of the present invention is to remedy these drawbacks by proposing a manufacturing method making it possible to measure and precisely control the current winding angle formed between the direction of unwinding of the paper strips and the longitudinal axis of the mandrel. , in addition to automatically controlling the angular displacement of the movable frame to obtain a current winding angle equal to the set or predetermined winding angle. Thus, it is possible to position the mobile chassis, at the start of each manufacturing cycle and during the manufacturing cycle, automatically without manual intervention to obtain a determined winding angle, without manual intervention on said mobile chassis.

A cet effet, l'invention a pour objet un procédé de fabrication de tube notamment en carton par enroulement hélicoïdal d'une bande ou plusieurs bandes de papier à recouvrement partiel et transversalement décalées les unes par rapport aux autres en formant nappe, autour d'un mandrin fixe par entraînement en rotation du tube en formation, caractérisé en ce qu'il consiste à régler automatiquement et de préférence de manière continue l'angle d'enroulement desdites bandes de papier défini entre la direction commune de dévidement desdites bandes de papier et l'axe longitudinal dudit mandrin, par mesure de l'angle d'enroulement actuel, par comparaison de la valeur ainsi mesurée de l'angle d'enroulement actuel avec une valeur de consigne dudit angle, et par commande d'un déplacement angulaire de ladite direction commune de dévidement des bandes de papier par rapport à l'axe longitudinal du mandrin de sorte que la valeur mesurée dudit angle d'enroulement est égale à la valeur de consigne prédéterminée.To this end, the subject of the invention is a method of manufacturing a tube, in particular cardboard, by helically winding a strip or several strips of paper with partial covering and transversely offset relative to each other by forming a sheet, around a fixed mandrel by rotationally driving the tube in formation, characterized in that it consists in automatically and preferably continuously adjusting the winding angle of said paper strips defined between the common direction of unwinding of said paper strips and the longitudinal axis of said mandrel, by measuring the current winding angle, by comparing the value thus measured of the current winding angle with a set value of said angle, and by controlling an angular displacement of said common direction of unwinding of the strips of paper with respect to the longitudinal axis of the mandrel so that the measured value of said winding angle is equal to the predetermined set value hermit.

Selon une autre caractéristique du procédé de l'invention, on déplace d'une manière rectiligne et réversible la nappe de bandes de papier précitée selon une direction perpendiculaire à la direction de dévidement précitée. Ainsi, la bande de papier d'une extrémité de la nappe est enroulée sur le mandrin fixe précité le plus près possible du porte-mandrin, quel que soit l'angle d'enroulement choisi de façon à ne pas perdre d'espace d'enroulement entre le dispositif d'entraînement en rotation du tube en formation et le porte-mandrin.According to another characteristic of the process of the invention, the above-mentioned sheet of paper web is moved in a rectilinear and reversible manner in a direction perpendicular to the above-mentioned unwinding direction. Thus, the paper strip at one end of the ply is wound on the above-mentioned fixed mandrel as close as possible to the mandrel holder, whatever the winding angle chosen so as not to lose space for winding between the device for rotating the forming tube and the mandrel holder.

L'invention a également pour objet une machine de fabrication de tube en carton par enroulement hélicoïdal d'une bande ou plusieurs bandes de papier à recouvrement partiel et transversalement décalées les unes par rapport aux autres en formant nappe, comprenant un châssis fixe supportant un mandrin fixe d'enroulement desdites bandes, un système d'entraînement en rotation du tube en formation, un châssis mobile supportant notamment un dispositif de dévidement d'une ou plusieurs bandes de papier, un dispositif d'encollage desdites bandes de papier et un système de positionnement et guidage des bandes de papier pour former ladite nappe, ledit châssis mobile étant monté déplaçable relativement audit châssis fixe, caractérisée en ce qu'elle comprend un dispositif de mesure de l'angle d'enroulement actuel des bandes de papier sur le mandrin émettant un signal, un dispositif de comparaison dudit signal à une valeur de consigne de l'angle d'enroulement de ladite nappe sur ledit mandrin fixe et un dispositif de commande de déplacement angulaire dudit châssis mobile asservi audit dispositif de comparaison.The invention also relates to a machine for manufacturing cardboard tubes by helically winding a strip or several strips of paper with partial covering and transversely offset relative to each other in the form of a sheet, comprising a fixed frame supporting a mandrel. fixed winding of said strips, a system for rotating the tube in formation, a movable frame supporting in particular a device for unwinding one or more strips of paper, a device for gluing said strips of paper and a system for positioning and guiding strips of paper to form said sheet, said movable frame being mounted movable relative to said fixed frame, characterized in that it comprises a device for measuring the current winding angle of the strips of paper on the mandrel emitting a signal, a device for comparing said signal with a set value of the angle of winding of said ply on said fixed mandrel and a device for controlling the angular movement of said movable chassis controlled by said comparison device.

Selon une autre caractéristique de l'invention, le châssis mobile est relié au châssis fixe par un dispositif d'attelage articulé en rotation autour d'un axe de pivot dont l'axe fictif coupe perpendiculairement l'axe longitudinal du mandrin et est monté sur des voies de roulement concentriques audit axe de pivot, le dispositif de commande précité assure la mise en fonctionnement d'un moteur d'entraînement réversible d'au moins une roue motrice dudit châssis mobile.According to another characteristic of the invention, the movable chassis is connected to the fixed chassis by a coupling device articulated in rotation about a pivot axis whose fictitious axis cuts perpendicularly the longitudinal axis of the mandrel and is mounted on rolling tracks concentric with said pivot axis, the aforementioned control device ensures the operation of a reversible drive motor of at least one drive wheel of said movable chassis.

Avantageusement, l'axe du mandrin fixe est sensiblement horizontal et l'axe de pivot précité de l'attelage du châssis mobile est sensiblement vertical.Advantageously, the axis of the fixed mandrel is substantially horizontal and the aforementioned pivot axis of the coupling of the mobile chassis is substantially vertical.

En outre, le dispositif de mesure de l'angle d'enroulement actuel précité et le dispositif d'affichage précité de la valeur de consigne sont des dispositifs à potentiomètre, avantageusement la valeur de consigne est exprimé en sinus d'angle d'enroulement.In addition, the aforementioned current winding angle measuring device and the aforementioned setpoint display device are potentiometer devices, advantageously the setpoint is expressed in sine of the winding angle.

Selon encore une autre caractéristique de l'invention, le châssis mobile précité est monté sur le dispositif d'attelage précité de manière déplaçable par translation rectiligne transversale sur ledit dispositif d'attelage. Avantageusement, cette fixation du châssis mobile sur son attelage est un système vis-écrou actionné par un moteur à fonctionnement synchronisé avec le moteur précité d'entraînement de la roue motrice dudit châssis mobile. Ainsi, il est possible de déplacer par translation rectiligne transversale la bande de papier par rapport à l'attelage et donc au mandrin fixe, tout en conservant constant l'angle d'enroulement dudit papier autour dudit mandrin.According to yet another characteristic of the invention, the aforementioned movable chassis is mounted on the aforementioned coupling device so as to be displaceable by rectilinear transverse translation on said coupling device. Advantageously, this fixing of the mobile chassis to its coupling is a screw-nut system actuated by a motor operating in synchronization with the aforementioned motor driving the driving wheel of said mobile chassis. Thus, it is possible to move by transverse rectilinear translation the strip of paper relative to the coupling and therefore to the fixed mandrel, while keeping constant the angle of winding of said paper around said mandrel.

Par ailleurs, selon une autre caractéristique de l'invention, l'entraînement en rotation du tube en. formation est constitué par une courroie sans fin enroulée autour dudit tube en formation et entrai- née par deux tambours à axe vertical perpendiculaire à l'axe horizontal longitudinal du mandrin, portés par une tourelle mobile éventuellement en translation parallèle à l'axe longitudinal du mandrin et/ou mobile en orientation angulaire par rapport audit axe longitudinal du mandrin. L'angle formé entre la perpendiculaire horizontale à l'axe longitudinal du mandrin et la ligne passant par les deux axes verticaux des tambours précités est réglé pour déterminer le degré d'ouverture ou de fermeture de la spire supérieure du tube.Furthermore, according to another characteristic of the invention, the rotational driving of the tube in. formation is constituted by an endless belt wound around said tube in formation and driven by two drums with vertical axis perpendicular to the longitudinal horizontal axis of the mandrel, carried by a mobile turret possibly in translation parallel to the longitudinal axis of the mandrel and / or movable in angular orientation relative to said longitudinal axis of the mandrel. The angle formed between the horizontal perpendicular to the longitudinal axis of the mandrel and the line passing through the two vertical axes of the aforementioned drums is adjusted to determine the degree of opening or closing of the upper turn of the tube.

D'autres détails, avantages, caractéristiques de l'invention apparaîtront plus clairement au vu de la description explicative faite ci-dessous en référence aux dessins schématiques annexés illustrant un mode de réalisation de l'invention, donné uniquement à titre d'exemple, et dans lesquels :

  • La figure 1 est une vue schématique de dessus illustrant l'ensemble d'une machine de fabrication conforme à l'invention.
  • La figure 2 est une vue schématique de dessus à échelle agrandie de la partie Il de la figure 1.
  • La figure 3 est une vue schématique de dessus à échelle agrandie de la. partie III de la figure 1 ; et
  • La figure 4 est une vue schématique de dessus du châssis fixe illustrant le principe d'enroulement hélicoïdal conforme à l'invention.
Other details, advantages, characteristics of the invention will appear more clearly in the light of the explanatory description given below with reference to the appended schematic drawings illustrating an embodiment of the invention, given solely by way of example, and wherein :
  • Figure 1 is a schematic top view illustrating the assembly of a manufacturing machine according to the invention.
  • FIG. 2 is a schematic top view on an enlarged scale of part II of FIG. 1.
  • Figure 3 is a schematic top view on an enlarged scale of the. Part III of Figure 1; and
  • Figure 4 is a schematic top view of the fixed frame illustrating the principle of helical winding according to the invention.

En se référant à la figure 1, la machine de fabrication de tube en carton comprend, de manière classique, un châssis fixe 1, et un châssis mobile 2 relié au châssis fixe 1 par un système d'attelage 3 tel qu'un timon d'attelage métallique, monté pivotant autour d'un axe de pivot 4 fixé sur le châssis fixe 1 et dont l'axe est sensiblement vertical et coupe perpendiculairement l'axe x longitudinal du mandrin 8 qui sera décrit ci-dessous.Referring to Figure 1, the cardboard tube manufacturing machine comprises, in a conventional manner, a fixed frame 1, and a movable frame 2 connected to the fixed frame 1 by a coupling system 3 such as a drawbar d 'metal hitch, pivotally mounted about a pivot axis 4 fixed on the fixed frame 1 and whose axis is substantially vertical and perpendicularly cuts the longitudinal x axis of the mandrel 8 which will be described below.

En outre, le châssis mobile est monté roulant, au moyen de roues 7 représentées schématiquement, sur des voies de roulement ou rails 6 disposés concentriquement à l'axe de pivot 4.In addition, the mobile chassis is mounted rolling, by means of wheels 7 shown diagrammatically, on rolling tracks or rails 6 arranged concentrically with the pivot axis 4.

le châssis mobile 2 de la machine de fabrication de l'invention supporte avantageusement un dispositif de dévidement d'une bande ou de plusieurs bandes de papier, un dispositif d'encollage d'une face de ces bandes de papier et un système de positionnement et de guidage de la bande de papier ou desdites bandes de papier pour former une nappe dans laquelle les bandes multiples se recouvrent partiellement et sont transversalement décalées les unes par rapport aux autres. Ces dispositifs de dévidement et d'encollage ainsi que le système de positionnement et de guidage précité sont très bien connus dans le domaine de la fabrication de tubes en carton et ne seront donc pas décrits en détail, en outre ils ne sont pas représentés en détail sur la figure 1 dans un but de clarté de celle-ci.the movable chassis 2 of the manufacturing machine of the invention advantageously supports a device for unwinding a strip or several strips of paper, a device for gluing one side of these strips of paper and a positioning system and for guiding the paper strip or said paper strips to form a sheet in which the multiple strips partially overlap and are transversely offset with respect to each other. These unwinding and gluing devices as well as the aforementioned positioning and guiding system are very well known in the field of manufacturing cardboard tubes and will therefore not be described in detail, moreover they are not shown in detail in Figure 1 for the sake of clarity thereof.

En outre, en se référant aux figures 1, 2 et 3 et conformément au mode de réalisation préféré de l'invention, le châssis mobile 2 comprend fixées sur son extrémité 2a non reliée au châssis fixe 1, deux roues motrices 9 supportant au moins une partie dudit châssis mobile par l'ensemble de montage de roues 10. L'entraînement de ces roues est commandé par un moteur 11 notamment un moteur électrique entraînant un système 12 de transmission à roues dentées et chaînes, par exemple. Ainsi, le châssis 2 peut être déplacé autour de l'axe de pivot 4 sur les rails 6 par rotation des <roues motrices 9, entraînées en mouvement par le moteur 11 à entraînement réversible.In addition, with reference to Figures 1, 2 and 3 and in accordance with the preferred embodiment of the invention, the movable frame 2 comprises fixed on its end 2a not connected to the fixed frame 1, two drive wheels 9 supporting at least one part of said movable chassis by the wheel mounting assembly 10. The driving of these wheels is controlled by a motor 11 in particular an electric motor driving a transmission system 12 with cogwheels and chains, for example. Thus, the chassis 2 can be moved around the pivot axis 4 on the rails 6 by rotation of the <drive wheels 9, driven in movement by the motor 11 with reversible drive.

De plus, conformément à l'invention, le châssis mobile 2 est fixé sur son attelage 3 par un système de vis-écrou comprenant une vis sans fin 13 et des galets 14 de roulement entraînés par ladite vis, permettant une translation rectiligne et transversale du châssis mobile 2 par rapport à son attelage et donc par rapport à la direction de dévidement de la nappe de papier y. L'entraînement de la vis sans fin est réalisé par un moteur 15, par exemple par un moto-réducteur et un système 16 de transmission à roues dentées- chaîne ou poulies-courroie.In addition, in accordance with the invention, the mobile chassis 2 is fixed to its coupling 3 by a screw-nut system comprising an endless screw 13 and rollers 14 for rolling driven by said screw, allowing rectilinear and transverse translation of the movable chassis 2 with respect to its coupling and therefore relative to the direction of unwinding of the paper web y. The drive of the worm is carried out by a motor 15, for example by a gear motor and a transmission system 16 with cogwheels-chain or pulleys-belt.

Le fonctionnement et là commande de ces moteurs 11, 15 seront décrits ultérieurement.The operation and control of these motors 11, 15 will be described later.

En se référant aux figures 1, 4 le châssis fixe 1 conforme à l'invention comprend un porte-mandrin 17 fixé de préférence à une extrémité du châssis fixe 1, un mandrin 8 de préférence cylindrique fixé sur le porte-mandrin 17 et présentant un axe longitudinal x de préférence sensiblement horizontal. Le mandrin 8 s'étend de préférence sur une longueur assez importante de manière à servir de support-guide au tube 18 de carton en formation lors de son déplacement linéaire vers l'extrémité dudit mandrin 8.Referring to Figures 1, 4 the fixed frame 1 according to the invention comprises a mandrel holder 17 preferably fixed at one end of the fixed frame 1, a preferably cylindrical mandrel 8 fixed on the mandrel holder 17 and having a longitudinal axis x preferably substantially horizontal. The mandrel 8 preferably extends over a fairly large length so as to serve as a guide support for the tube 18 of cardboard being formed during its linear movement towards the end of said mandrel 8.

En outre, conformément à l'invention le tube en carton 8 en formation est entraîné en rotation par une courroie 19 sans fin enroulée en boucle simple autour du tube en formation, de préférence avec ses brins croisés, comme illustré à la figure 4. Cette courroie est entraînée par deux tambours 20 à axe vertical portés par une tourelle 21 mobile d'une part en translation parallèle à l'axe fixe du mandrin 8 sur par exemple des glissières 22 de déplacement latéral, et d'autre part mobile en position angulaire par rapport à l'axe longitudinal x du mandrin, de manière que la droite z passant par les axes verticaux des tambours 20 définissent un angle 0, dans le plan horizontal, avec une perpendiculaire à l'axe x longitudinal du mandrin 8. Avantageusement, l'orientation angulaire de la courroie 19 et sa position latérale par rapport au mandrin est réglée manuellement ou automatiquement par des manivelles 23, 24, par exemple.Furthermore, in accordance with the invention, the cardboard tube 8 in formation is rotated by an endless belt 19 wound in a simple loop around the tube in formation, preferably with its strands crossed, as illustrated in FIG. belt is driven by two drums 20 with vertical axis carried by a turret 21 movable on the one hand in translation parallel to the fixed axis of the mandrel 8 on for example slides 22 for lateral movement, and on the other hand movable in angular position relative to the longitudinal axis x of the mandrel, so that the straight line z passing through the vertical axes of the drums 20 define an angle 0, in the horizontal plane, with a perpendicular to the longitudinal x axis of the mandrel 8. Advantageously, the angular orientation of the belt 19 and its lateral position relative to the mandrel is adjusted manually or automatically by cranks 23, 24, for example.

Il est bien entendu que ce système d'entraînement en rotation du tube 18 en formation est seulement donné comme un mode de réalisation préféré de l'invention, toutefois tout autre système permettant d'entraîner en rotation le tube 18 en formation et permettant de réaliser l'enroulement hélicoïdal de la bande de papier 25 pourra être utilisé dans la machine de fabrication conforme à l'invention.It is understood that this system for rotating the tube 18 in formation is only given as a preferred embodiment of the invention, however any other system making it possible to rotate the tube 18 in formation and making it possible to produce the helical winding of the paper strip 25 can be used in the manufacturing machine according to the invention.

Selon l'invention, et en se référant à la figure 1, les moyens de commande du déplacement angulaire du châssis mobile 2 par rapport au châssis fixe 1 comprennent un dispositif de mesure représenté schématiquement en 26 de l'angle d'enroulement du papier autour du mandrin 8 ou de préférence l'angle a défini entre la direction y de préférence sensiblement horizontale de dévidement du papier et la perpendiculaire dans le plan horizontal à l'axe X longitudinal du mandrin 8. Ce dispositif, qui est par exemple un dispositif à potentiomètre, émet un signal qui est appliqué à un dispositif de comparaison 27. Ce dispositif de comparaison 27 reçoit un signal d'un dispositif d'affichage 28 d'une valeur de consigne de l'angle a. Avantageusement, ce dispositif 28 d'affichage est un dispositif à potentiomètre étalonné en valeur de sinus a. Le dispositif de comparaison émet un signal vers un dispositif de commande 29 lorsque les deux signaux émis respectivement par le dispositif de mesure 26 et le dispositif d'affichage 28 ne sont pas identiques. Le dispositif 29 commande le fonctionnement du moteur 11 pour l'entraînement des roues motrices 9 et le déplacement angulaire du châssis 2 de telle manière que l'angle actuel a mesuré par le dispositif de mesure 26 correspond à la valeur de consigne de l'angle a affichée par le dispositif d'affichage 28.According to the invention, and with reference to FIG. 1, the means for controlling the angular displacement of the movable frame 2 relative to the fixed frame 1 comprise a measuring device shown schematically at 26 of the angle of winding of the paper around of the mandrel 8 or preferably the angle a defined between the direction y, preferably substantially horizontal, of the unwinding of the paper and the perpendicular in the horizontal plane to the longitudinal X axis of the mandrel 8. This device, which is for example a device for potentiometer, emits a signal which is applied to a comparison device 27. This comparison device 27 receives a signal from a display device 28 of a set value of the angle a. Advantageously, this display device 28 is a potentiometer device calibrated in sine value a. The comparison device sends a signal to a control device 29 when the two signals sent respectively by the measuring device 26 and the display device 28 are not identical. The device 29 controls the operation of the motor 11 for driving the drive wheels 9 and the angular displacement of the chassis 2 so that the current angle measured by the measuring device 26 corresponds to the set point value of the angle displayed by the display device 28.

Ainsi, il ressort de cette description que par simple affichage du sinus de l'angle α désiré par le dispositif 28, automatiquement les moyens de commande 29 commanderont un déplacement du châssis mobile 2 de telle sorte que l'angle a actuel mesuré par le dispositif 26 devienne égal à la valeur d'affichage. Par conséquent, par simple affichage de l'angle a désiré le réglage de celui-ci est effectué automatiquement et de manière précise.Thus, it emerges from this description that by simply displaying the sine of the angle α desired by the device 28, the control means 29 will automatically control a movement of the movable frame 2 so that the angle a currently measured by the device 26 becomes equal to the display value. Consequently, by simply displaying the desired angle, the adjustment thereof is carried out automatically and precisely.

Par ailleurs, la fixation mobile en translation rectiligne transversale du châssis 2 sur son attelage 3 permet, par exemple lors d'un changement d'angle d'enroulement de disposer la bande de papier 25 formant extrémité de la nappe, le plus près possible du support de mandrin 17 pour éviter toute perte de longueur de mandrin entre le support de mandrin 17 et la courroie d'entraînement 19. Toutefois, il est nécessaire lors de cette translation rectiligne transversale du châssis mobile 2 par rapport à son attelage 3 de déplacer angulairement ledit châssis 2 pour conserver l'angle d'enroulement. Pour cela, le moteur 15 d'entraînement de translation fonctionne de manière synchronisée, par exemple par variation de vitesse avec le moteur 11 de commande de roues motrices 9.Furthermore, the movable fixing in transverse rectilinear translation of the chassis 2 on its coupling 3 allows, for example during a change of winding angle, to arrange the strip of paper 25 forming the end of the sheet, as close as possible to the mandrel support 17 to avoid any loss of mandrel length between the mandrel support 17 and the drive belt 19. However, during this rectilinear transverse translation of the movable chassis 2 relative to its coupling 3 to angularly move said frame 2 to keep the winding angle. For this, the translation drive motor 15 operates synchronously, for example by speed variation with the motor 11 for driving the driving wheels 9.

Il est bien entendu possible de prévoir comme roues motrices une ou plusieurs roues 7 de support du châssis 2.It is of course possible to provide as driving wheels one or more wheels 7 for supporting the chassis 2.

Ainsi, la présente invention procure un procédé permettant de régler de manière automatique, précise sans intervention manuelle sur la machine, l'angle d'enroulement des bandes de papier autour du mandrin fixe 8, et d'autre part, par réglage de l'angle 6, en d'autres termes de l'inclinaison des courroies par rapport à l'axe longitudinal x du mandrin le degré d'ouverture ou de fermeture de la dernière spire de papier enroulée sur le tube en formation.Thus, the present invention provides a method for adjusting automatically, precisely without manual intervention on the machine, the angle of winding of the paper strips around the fixed mandrel 8, and on the other hand, by adjusting the angle 6, in other words the inclination of the belts relative to the longitudinal axis x of the mandrel the degree of opening or closing of the last turn of paper wound on the tube in formation.

La présente invention permet donc d'automatiser le fonctionnement d'une machine de fabrication de tube en carton, et principalement de permettre un réglage très précis et très rapide de l'angle d'enroulement du papier autour du mandrin, ainsi que de maintenir cet angle constant pendant tout le cycle de fabrication.The present invention therefore makes it possible to automate the operation of a machine for manufacturing cardboard tubes, and mainly to allow very precise and very rapid adjustment of the angle of winding of the paper around the mandrel, as well as to maintain this constant angle throughout the manufacturing cycle.

Il est bien entendu que le châssis mobile 1 peut également supporter tous les éléments, dispositifs pour la mise en forme de bandes de papier avant leur enroulement autour du mandrin fixe, et par ailleurs que ce châssis mobile peut seulement supporter le système de guidage et de positionnement des bandes de papier avant l'enroulement pour les positionner'selon la direction de dévidement Y.It is understood that the movable frame 1 can also support all the elements, devices for shaping strips of paper before they are wound around the fixed mandrel, and moreover that this movable frame can only support the guidance and positions strips of paper before winding to position them in the direction of unwinding Y.

Claims (11)

1. Method of manufacturing cardboard tubes through helical winding of one paper strip or several partially overlapping paper strips (25) transversely offset with respect to each other thereby forming a web, about a stationary mandrel (8) mounted on a mandrel holder (17) through rotational drive of the tube being formed (18), characterized in that it consists in automatically and preferably continuously adjusting the winding angle (a) of the said paper strips defined between the common direction (y) of unwinding of the said paper strips and the longitudinal axis (x) of the said mandrel (8), by the measure of the instant winding angle through comparison of the value thus measured of the instant angle with a set value of the said angle and through control of one angular displacement of the said common direction (y) of unwinding of the said paper strips with respect to the longitudinal axis (x) of the mandrel, so that the measured value of the said winding angle be equal to the predetermined set value.
2. Method according to claim 1, characterized in that it consists in displacing in a rectilinear and reversible manner the aforesaid web of paper strips along a direction perpendicular to the aforesaid common unwinding direction (y) in order that one end paper strip of the said web be wound about the aforesaid mandrel (8) as near the mandrel holder (17) as possible.
3. Method according to claim 1 or 2, characterized in that the measure of the aforesaid instant winding angle is carried out through the measure of the angle defined between the aforesaid common direction (y) of unwinding of the paper strips and a straight line perpendicular to the longitudinal axis (x) of the mandrel (8), the said straight line being contained in the plane defined by the said common direction and the said longitudinal mandrel axis.
4. Machine for making cardboard tubes through helical winding of one paper strips transversely offset with respect to each other to form a web, comprising a stationary frame (1) supporting a stationary mandrel (8) for the winding of the said strips (25), a drive system (19) for rotating the tube being formed (18), a movable frame (2) supporting in particular a device for unwinding one or several of the said paper strips (25), a device for gluing the said paper strips and a system for positioning and guiding the paper strips to form the said web, the said movable frame (2) being displaceably mounted in relation to the stationary frame (1), characterized in that it comprises a device (26) for measuring the instant angle of winding of the paper strips (25) onto the mandrel (8) and emitting a signal, a device (27) for comparing the said signal to a nominal value of the angle of winding of the said web onto the said stationary mandrel (1) and a device (29) for controlling the angular displacement of the said movable frame (2) interlocked in follow-up relationship with the said comparison device (27).
5. Machine according to claim 4, characterized in that the movable frame (2) is connected to the stationary frame (1) by a coupling device (3) pivoted for rotation about a pivot pin (4) the fictitious axis of which perpendicularly intersects the longitudinal axis (x) of the mandrel (8) and is mounted in rolling relationship on runways concentric with the said pivot axis, the aforesaid control device (29) provides for putting into operation of a motor (11) for reversibly driving at least one drive wheel of the said stationary frame (2).
6. Machine according to claim 4 or 5, characterized in that the longitudinal axis (x) of the aforesaid mandrel (8) is substantially horizontal and the pivot axis (4) is substantially vertical.
7. Machine according to claim 5 or 6, characterized in that the device (26) for the measure of the aforesaid instant winding angle and the aforesaid device (28) for displaying the nominal value of the winding angle are potentiometer devices, the said display device being advantageously rated in sines of the winding angle and preferably in sines of the angle (a) defined between the aforesaid common unbwinding direction (y) and the horizontal perpendicular to the longitudinal axis (x) of the aforesaid mandrel, the said measuring device (26) measuring the instant value of the said angle (a).
8. Machine according to one of claims 4 to 7, characterized in that the aforesaid movable frame (2) is mounted on the aforesaid coupling device (3) in a manner displaceable through transverse rectilinear translatory motion on the said coupling device.
9. Machine according to claim 8, characterized in that the fastening of the aforesaid movable frame (2) on its coupling (3) comprises a screw- nut system operated by one aforesaid motor (11) for driving the drive wheel (9) of the said movable frame (2).
10. Machine according to one of claims 4 to 7, characterized in that the drive for rotating the tube being formed (18) consists of an endless belt (19) wrapped about the said tube being formed (18) and driven by two drums (20) with vertical axes perpendicular to the horizontal longitudinal axis (x) of the mandrel (8), the said drums (20) being carried by a turret (21) possibly movable in translatory motion parallel to the axis (x) of the mandrel and/or movable in angular orientation with respect to the said longitudinal axis (x) of the mandrel.
11. Machine according to claim 10, characterized in that the aforesaid angular orientation of the turret (21) or of the belt (19) with respect to the axis (x) of the mandrel is defined by the angle (8) comprised between the straight line (z) passing through the vertical axes of both aforesaid drums (20) and the horizontal perpendicular to the longitudinal axis (x) of the mandrel, the said angle being adjusted by adjusting means (23) to determine the degree of opening or closing of the upper turn of the tube being formed (18).
EP81402094A 1981-09-14 1981-12-30 Method and apparatus for manufacturing spirally wound paper tubes, and tubes produced by such a method Expired EP0074453B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81402094T ATE21498T1 (en) 1981-09-14 1981-12-30 METHOD AND MACHINE FOR MAKING SCREW-SEATED TUBES FROM CARTON, AND TUBES MANUFACTURED IN THIS WAY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8117332A FR2512733B1 (en) 1981-09-14 1981-09-14 METHOD AND MACHINE FOR MANUFACTURING CARDBOARD TUBE BY HELICOIDAL WINDING AND TUBES OBTAINED THEREBY
FR8117332 1981-09-14

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EP0074453A1 EP0074453A1 (en) 1983-03-23
EP0074453B1 true EP0074453B1 (en) 1986-08-20

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EP81402094A Expired EP0074453B1 (en) 1981-09-14 1981-12-30 Method and apparatus for manufacturing spirally wound paper tubes, and tubes produced by such a method

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US (1) US4473368A (en)
EP (1) EP0074453B1 (en)
AT (1) ATE21498T1 (en)
CA (1) CA1183764A (en)
DE (2) DE74453T1 (en)
ES (1) ES515704A0 (en)
FR (1) FR2512733B1 (en)

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Publication number Publication date
DE3175187D1 (en) 1986-09-25
ATE21498T1 (en) 1986-09-15
ES8400290A1 (en) 1983-10-16
EP0074453A1 (en) 1983-03-23
FR2512733A1 (en) 1983-03-18
DE74453T1 (en) 1983-08-18
ES515704A0 (en) 1983-10-16
FR2512733B1 (en) 1987-05-07
CA1183764A (en) 1985-03-12
US4473368A (en) 1984-09-25

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