EP0662437B1 - Device for connecting tapes of flexible material - Google Patents

Device for connecting tapes of flexible material Download PDF

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Publication number
EP0662437B1
EP0662437B1 EP19930810887 EP93810887A EP0662437B1 EP 0662437 B1 EP0662437 B1 EP 0662437B1 EP 19930810887 EP19930810887 EP 19930810887 EP 93810887 A EP93810887 A EP 93810887A EP 0662437 B1 EP0662437 B1 EP 0662437B1
Authority
EP
European Patent Office
Prior art keywords
strips
hammer
strip
striking
paper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19930810887
Other languages
German (de)
French (fr)
Other versions
EP0662437A1 (en
Inventor
Jean Cestonaro
Jean-Luc Mathon
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.)
Philip Morris Products SA
Original Assignee
Fabriques de Tabac Reunies SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fabriques de Tabac Reunies SA filed Critical Fabriques de Tabac Reunies SA
Priority to DE1993600282 priority Critical patent/DE69300282T2/en
Priority to EP19930810887 priority patent/EP0662437B1/en
Priority to CZ942578A priority patent/CZ281885B6/en
Priority to US08/355,937 priority patent/US5827166A/en
Publication of EP0662437A1 publication Critical patent/EP0662437A1/en
Application granted granted Critical
Publication of EP0662437B1 publication Critical patent/EP0662437B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1805—Flying splicing, i.e. the expiring web moving during splicing contact
    • B65H19/1826—Flying splicing, i.e. the expiring web moving during splicing contact taking place at a distance from the replacement roll
    • B65H19/1836—Flying splicing, i.e. the expiring web moving during splicing contact taking place at a distance from the replacement roll the replacement web being accelerated or running prior to splicing contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/20—Cutting-off the expiring web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/462—Form of splice
    • B65H2301/4621—Overlapping article or web portions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/463—Splicing splicing means, i.e. means by which a web end is bound to another web end
    • B65H2301/4632—Simultaneous deformation of the two web ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/464—Splicing effecting splice
    • B65H2301/46414—Splicing effecting splice by nipping rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
    • B65H2406/111—Means using fluid made only for exhausting gaseous medium producing fluidised bed for handling material along a curved path, e.g. fluidised turning bar

Definitions

  • the present invention relates to an end-to-end connection device for strips of flexible material, particularly paper strips, used in particular in the cigarette manufacturing industry, and from which the cigarette paper is obtained surrounding the tobacco rod or the cuff paper surrounding the cigarette filter.
  • This device can also be used for connecting strips of numerous products in this form, for example smooth or crepe paper, glossy, varnished, lacquered paper, composite products such as paper or another material covered with a aluminum layer for example, synthetic films, for example made of cellophane or polypropylene, non-woven materials, or even thin strips entirely of metal such as aluminum strips, these materials can have other uses than those mentioned above , which can for example be used for packaging purposes or for components of a part of the cigarette, for example of the filter. According to the uses, these ribbons can carry an impression on one or both sides.
  • the method and the device described in the application EP-A-0.475.886 allow a connection of the paper strips when the latter are in motion; however, this device is more particularly intended for the connection of the strips of paper from which the cuff paper is obtained, ie that surrounding the filter tips.
  • This device comprises in particular two rollers, a male roller and a female roller whose notches interpenetrate in order to obtain a connection by torn tabs in the paper ribbons.
  • Such a device is of use limited to certain types of paper.
  • Other known devices such as, for example, application EP-A-0 446 901, require a piece of adhesive tape to be inserted between the two portions of strips to be assembled; the downside of these devices is obvious since the presence of an operator is necessary to prepare and arrange the pieces of adhesive.
  • Patent EP-A-0.331.634 discloses a method and a device for opening a full coil and for preparing the end of the upper turn for connection, while application EP-A-0.509.958 describes a method and a device allowing the transfer of wafers or reels during reeling; these two devices can advantageously be used in conjunction with that proposed by the present invention.
  • a first object of the invention is to provide a device for connecting strips of paper or more generally of a flexible material, not meeting the drawbacks of those of the prior art, or by which a connection can be obtained reliable, said connection being made when the strip takes place at its nominal speed, usable in particular for all the types of flexible materials mentioned in the introduction, this connection device being able to operate fully automatically.
  • Another object of the invention is to propose that the above connection device be directly provided with cutting means, or directly control said means, so that the parts of strips to be eliminate are cut with precision, without requiring complex and delicate synchronization means.
  • FIG. 1 there is a portion of machine 1 responsible for continuously delivering a strip of paper 2 to a machine for making cigarettes (not shown) arranged downstream of the portion of machine shown here.
  • the paper strip 2 comes from a reel 20, fixed by a first axis (not shown) to the portion of machine 1 and rotating around it, the paper strip 2 unwinding from the upper turn of the reel 20, passing over at least one connecting roll 6 whose function will be explained below and at least a guide roller 10.
  • FIG. 1 represents only the elements mentioned placed in the immediate vicinity of the device according to the invention, the paper strips 2 and 21 being in position to be connected.
  • a massive balancing piece 36A can be fixed on the connecting bar, or the spring 38 can be strong enough so that, when the system is in rotation, the striking arm 3 remains in rest position, that is to say face 40 of the hammer in abutment against abutment 39.
  • the underside 41 of the hammer 4 in the form of a portion of a cylinder comprises raised grooves or knurling, as shown by way of example in FIG. 4A, preferably constituted by two perpendicular networks of parallel grooves, spaced apart from each other. a distance of 1 to 2 mm. Other types of grooves or other dimensions of these could also be envisaged.
  • FIGS. 4A, 4B and 4D indicate the direction of movement of the lower face 41.
  • the connecting roller 6 comprises a smooth cylindrical peripheral surface of support 60, on which the underside of the paper strip 2 is in abutment, the two superimposed strips of paper being guided on this surface by two circular guide ribs 61, defining the sides of the bearing surface 60.
  • Two other bearing surfaces 62 are provided on either side of the bearing surface 60, their function being explained below.
  • the connecting roller 6 is connected to a rotating axis 63, rotated by motor means 64. As previously, the axis 63 pivots inside ball bearings whose outer linings are fixed relative to the wall 13.
  • connection operation imposes significant shocks on the device, mainly on the axis 63; special precautions, known to those skilled in the art, are therefore to be taken so that this axis is not damaged and that the rotational movement of the connecting roller 6 remains regular.
  • the control unit 70 which in turn controls the setting means rotation 34 of the striking arm 3; the latter then begins to rotate on its axis 31, the drive means 34 accelerating this movement until the tangential speed of the lower face 41 of the hammer 4 reaches the speed of movement of the two strips of paper 2 and 21.
  • the striking arm 3 is always in the retracted position, this is ie it can pivot freely on its axis 31.
  • FIGS. 5A to 5E which describe different phases of the connection and cutting operations.
  • the hammer 4 is provided with a front cutting pad 8 while a rear cutting pad 9 is disposed immediately behind the connecting roller 6.
  • the front cutting pad 8 is mainly composed of two bent levers 80 pivoting about an axis 81, arranged on the two lateral faces of the hammer 4 (see FIG.
  • the front cutter trim is completed by two springs 85, one on each face of the hammer 4, and acting on each lever 80 so as to keep the cutting blade 83 in the raised position; this raised position being determined by two stops 86.
  • the rear cutter trim 9 is mainly composed of a lever 90 disposed on one side of the paper strips 2 and 21, pivoting about an axis 91, slightly back and parallel to the axis of rotation of the connecting roller 6. This lever 90 comprises a portion 92, supporting a cutting blade 93 arranged in through and under the strip of paper 2.
  • the end 94 of the lever 90 is intended to be actuated by a portion of rod 95, projecting from the lateral face of the hammer 4, in a manner described below.
  • Spring means 96 hold the lever 90 in position as shown in Figure 5A.
  • the blade 93 it would also be possible for the blade 93 to be supported by two levers 90 arranged symmetrically on each side of the paper strips and controlled by two portions of rod 95 disposed on the two opposite lateral faces of the hammer 4.
  • FIG. 5A we see the two paper strips 2 and 21 unrolling at the same speed, pressing on the connecting roller 6, as well as the hammer 4, still in the retracted position, which approaches by its rotational movement; the front 8 and rear 9 trim fittings are also in the retracted position.
  • FIG. 5A we see the two paper strips 2 and 21 unrolling at the same speed, pressing on the connecting roller 6, as well as the hammer 4, still in the retracted position, which approaches by its rotational movement; the front 8 and rear 9 trim fittings
  • 5D shows the same device a short instant later, a greater length of connection has been made, the bearing surfaces 84 disengage from the peripheral bearing surfaces 62, causing the blade 85 to act under the action of the spring 83 begins to rise, while now the end 94 of the lever 90 is fully engaged by the rod portion 95, causing the blade 93 to cut the strip of paper 2 in a position behind the connection 22, while the latter is not finished yet.
  • connection and cutting operations is represented in FIG. 5E where, the hammer 4 is in position where it terminates the connection 22 of the two strips of paper, these having already been cut, the cutting trim before 8 s 'is fully raised while the lever 90 is released from the rod portion 95 and has been returned to the rest position under the action of the spring 96. Immediately after this step, the cam 37 will be out of action of the roller 53, the hammer 4 then returning to its retracted position under the action of the spring 38.
  • the position of the lower surface 41 of the hammer 4 in the extended position must be exactly located relative to the bearing surface 60 of the roller 6, in order to effect a correct and reliable connection of the two strips of paper, this relative position being determined by the relative positions of the caster 53 and the surface of the action zone 37B of the cam 37.
  • the striking arm 3 is positioned in such a way that the lower surface 41 intersects the surface d 'support 60 of the roller 6 of the order of 1 to 2 mm when these two surfaces are in contact; this difference of 1 to 2 mm can be absorbed by the air cushion of the jack 51, which makes it possible to raise the striking arm 3 all the same, since the lower surface 41 can only be tangent to the strip of paper 21.
  • the leading leading edge 41A of the hammer 4 is rounded, so as to allow this slight movement of the hammer when the latter comes into contact with the paper strips on the support roller 6.
  • the overpressure thus generated further increases the support pressure of the lower surface 41 on the strips of paper and on the bearing surface 60.
  • the separation of the surface 41 into several portions can make it possible to limit the bearing force for strips of large width.
  • the device according to the invention does not require any adjustment of the coordination of the cutting means since these are directly controlled by the movement of the hammer 4.
  • connection device has been described here according to a configuration where the paper strips 2 and 21 circulate in approximately horizontal planes; it is obvious that it would work in the same way for a displacement of the strips of paper in an approximately vertical plane; in this case the figures would have to be turned a quarter of a turn, in one direction or the other.
  • the angle in which the paper strips are located depends firstly on the general configuration of the machine, so it can be any, the connection device being positioned accordingly.
  • the mechanical parts in particular the caster 53, the cam 37, the hammer 4 and the connecting roller 6 undergo significant mechanical shocks; they will therefore be chosen from materials capable of withstanding these shocks, as well as the parts which support them.
  • connection can be made without interrupting the unwinding of the strip, ie without loss of productivity of the manufacturing machine and with means of synchronization of the extremely simple cutting means.
  • the machine will advantageously be supplemented with an additional device making it possible to identify the location of a pattern on the new strip and d '' eliminate the part of the strip where the connection is located so that the patterns are not offset for the rest of the operations.

Landscapes

  • Replacement Of Web Rolls (AREA)

Description

La présente invention concerne un dispositif de raccordement bout à bout de bandes en un matériau souple, particulièrement de bandes de papier, utilisées notamment dans l'industrie de fabrication des cigarettes, et desquelles on obtient le papier à cigarettes entourant le boudin de tabac ou le papier manchette entourant le filtre de cigarette. Ce dispositif peut aussi être utilisé pour le raccordement de bandes de nombreux produits se présentant sous cette forme, par exemple du papier lisse ou crêpé, du papier glacé, verni, laqué, des produits composites comme du papier ou un autre matériau recouvert d'une couche d'aluminium par exemple, des films synthétiques, par exemple en cellophane ou polypropylène, des matériaux non-tissés, ou même de bandes minces entièrement métalliques comme des bandes d'aluminium, ces matériaux pouvant avoir d'autres utilisations que celles mentionnées précédemment, pouvant par exemple être utilisé à des fins d'emballage ou de constituants d'une partie de la cigarette, par exemple du filtre. Selon les utilisations, ces rubans peuvent porter une impression sur une ou les deux faces.The present invention relates to an end-to-end connection device for strips of flexible material, particularly paper strips, used in particular in the cigarette manufacturing industry, and from which the cigarette paper is obtained surrounding the tobacco rod or the cuff paper surrounding the cigarette filter. This device can also be used for connecting strips of numerous products in this form, for example smooth or crepe paper, glossy, varnished, lacquered paper, composite products such as paper or another material covered with a aluminum layer for example, synthetic films, for example made of cellophane or polypropylene, non-woven materials, or even thin strips entirely of metal such as aluminum strips, these materials can have other uses than those mentioned above , which can for example be used for packaging purposes or for components of a part of the cigarette, for example of the filter. According to the uses, these ribbons can carry an impression on one or both sides.

De tels dispositifs sont généralement connus de la technique, un certain nombre de documents se rapportant à cette technique étant cités ci-après. Le brevet EP-A-0.318.427 décrit abondamment un procédé et un dispositif permettant de réaliser l'opération de raccordement de bandes de papier à cigarettes en relatant notamment aussi les opérations qui précèdent directement celle de raccordement qui nous intéresse ici, soit les échanges de bobines, préparation de la bobine pleine et amenée de l'extrémité de la spire supérieure de la bobine pleine en face du dispositif de raccordement. De par son principe, le dispositif précité travaille au raccordement lorsque les deux bandes de papier sont immobiles, ce qui nécessite soit d'arrêter la machine de production durant cette opération, soit de prévoir un dispositif d'accumulation permettant de réaliser une réserve de longueur de bande de papier, réserve qui est consommée par la machine de fabrication de cigarettes durant l'arrêt de la bande pour raccordement. Ceci est un inconvénient important de ce dispositif ainsi que de tous ceux qui fonctionnent à l'arrêt puisque, en tenant compte des temps de décélération, d'arrêt et d'accélération, et si l'on veut que la production puisse toujours continuer à la même cadence, il est nécessaire de prévoir une réserve de longueur très importante, d'où une machine encombrante et délicate. Généralement on opte pour un compromis, en créant une réserve de longueur moins importante et en acceptant de baisser la cadence de production de la machine de fabrication de cigarettes. On a alors une baisse de productivité qui peut ne pas être négligeable. Le procédé et le dispositif décrits dans la demande EP-A-0.475.886 permettent un raccordement des bandes de papier lorsque celle-ci sont en mouvement; toutefois ce dispositif est plus particulièrement prévu pour le raccordement des bandes de papier desquelles on obtient le papier de manchettes, soit celui entourant les bouts-filtres. Ce dispositif comprend en particulier deux rouleaux, un rouleau mâle et un rouleau femelle dont des encoches s'interpénètrent afin d'obtenir un raccordement par des languettes déchirées dans les rubans de papier. Un tel dispositif est d'utilisation limitée à certains types de papiers. D'autres dispositifs connus comme par exemple la demande EP-A-0 446 901 nécessitent d'intercaler un morceau de ruban adhésif entre les deux portions de bandes à assembler; l'inconvénient de ces dispositifs est évident puisque la présence d'un opérateur est nécessaire pour préparer et disposer les morceaux d'adhésifs.Such devices are generally known in the art, a certain number of documents relating to this technique being cited below. The patent EP-A-0.318.427 describes abundantly a method and a device making it possible to carry out the operation of connecting strips of cigarette paper by relating in particular also the operations which directly precede that of connection which interests us here, namely the exchanges of reels, preparation of the full reel and brought from the end of the upper turn of the full coil in front of the connection device. By virtue of its principle, the aforementioned device works at the connection when the two strips of paper are stationary, which requires either stopping the production machine during this operation, or providing an accumulation device making it possible to create a reserve of length of paper strip, reserve which is consumed by the cigarette making machine during the stopping of the strip for connection. This is an important drawback of this device as well as of all those which operate at a standstill since, taking into account the deceleration, stop and acceleration times, and if it is desired that production can always continue to at the same rate, it is necessary to provide a very large length reserve, hence a bulky and delicate machine. Generally we opt for a compromise, by creating a reserve of lesser length and by agreeing to lower the production rate of the cigarette making machine. There is then a drop in productivity which may not be negligible. The method and the device described in the application EP-A-0.475.886 allow a connection of the paper strips when the latter are in motion; however, this device is more particularly intended for the connection of the strips of paper from which the cuff paper is obtained, ie that surrounding the filter tips. This device comprises in particular two rollers, a male roller and a female roller whose notches interpenetrate in order to obtain a connection by torn tabs in the paper ribbons. Such a device is of use limited to certain types of paper. Other known devices such as, for example, application EP-A-0 446 901, require a piece of adhesive tape to be inserted between the two portions of strips to be assembled; the downside of these devices is obvious since the presence of an operator is necessary to prepare and arrange the pieces of adhesive.

A côté de l'opération de raccordement des bandes de papier, il est nécessaire de prévoir des opérations de coupe des bandes de papier inutilisées des deux côtés du raccordement; les dispositifs décrits ci-dessus comportent des moyens de coupe indépendants des moyens utilisés pour le raccordement, ce qui nécessite des moyens de synchronisation complexes, au moins pour les cas où les raccordements se font à une certaine vitesse. Le brevet EP-A-0.331.634 divulgue un procédé et un dispositif d'ouverture d'une bobine pleine et de préparation de l'extrémité de la spire supérieure pour le raccordement, alors que la demande EP-A-0.509.958 décrit un procédé et un dispositif permettant le transfert de galettes ou de bobines en cours de dévidage; ces deux dispositifs peuvent avantageusement être utilisés en liaison avec celui proposé par la présente invention.Besides the operation of connecting the paper strips, it is necessary to provide operations for cutting the unused paper strips on both sides of the connection; the devices described above comprise cutting means independent of the means used for the connection, which requires complex synchronization means, at least for the cases where the connections are made at a certain speed. Patent EP-A-0.331.634 discloses a method and a device for opening a full coil and for preparing the end of the upper turn for connection, while application EP-A-0.509.958 describes a method and a device allowing the transfer of wafers or reels during reeling; these two devices can advantageously be used in conjunction with that proposed by the present invention.

Ainsi donc un premier but de l'invention est de proposer un dispositif de raccordement de bandes de papier ou plus généralement d'un matériau souple, ne rencontrant pas les inconvénients de ceux de l'art antérieur, soit par lequel on puisse obtenir un raccordement fiable, ledit raccordement étant effectué lorsque la bande se déroule à sa vitesse nominale, utllisable en particulier pour tous les types de matériaux souples mentionnés dans l'introduction, ce dispositif de raccordement pouvant fonctionner de manière entièrement automatique.Thus a first object of the invention is to provide a device for connecting strips of paper or more generally of a flexible material, not meeting the drawbacks of those of the prior art, or by which a connection can be obtained reliable, said connection being made when the strip takes place at its nominal speed, usable in particular for all the types of flexible materials mentioned in the introduction, this connection device being able to operate fully automatically.

Un autre but de l'invention est de proposer que le dispositif de raccordement ci-dessus soit directement muni de moyens de coupe, ou commandant directement lesdits moyens, afin que les parties de bandes à éliminer soient coupées avec précision, sans nécessiter des moyens de synchronisation complexes et délicats.Another object of the invention is to propose that the above connection device be directly provided with cutting means, or directly control said means, so that the parts of strips to be eliminate are cut with precision, without requiring complex and delicate synchronization means.

Le résultat souhaité est obtenu par un dispositif possédant les caractéristiques mentionnées dans les revendications.The desired result is obtained by a device having the characteristics mentioned in the claims.

A titre d'exemple d'une forme d'exécution possible d'un dispositif selon l'invention, on peut se référer à la description détaillée qui suit en regard du dessin annexé comportant les figures où:

  • la figure 1 représente une vue de face du dispositif selon l'invention,
  • la figure 2 représente le même dispositif vu de côté,
  • la figure 3 représente une même vue que celle de la figure 1, le dispositif étant en position pour le raccordement,
  • la figure 4A représente une vue d'une première forme d'exécution de la surface inférieure du marteau,
  • la figure 4B représente une vue d'une deuxième forme d'exécution de la surface inférieure du marteau,
  • la figure 4C représente une coupe selon la ligne C-C de la figure précédente,
  • la figure 4D représente une vue d'une troisième forme d'exécution de la surface inférieure du marteau, et
  • les figures 5A à 5E représentent différentes étapes des opérations de raccordement et de coupe.
As an example of a possible embodiment of a device according to the invention, reference may be made to the detailed description which follows with reference to the appended drawing comprising the figures where:
  • FIG. 1 represents a front view of the device according to the invention,
  • FIG. 2 represents the same device seen from the side,
  • FIG. 3 represents the same view as that of FIG. 1, the device being in position for connection,
  • FIG. 4A represents a view of a first embodiment of the lower surface of the hammer,
  • FIG. 4B represents a view of a second embodiment of the lower surface of the hammer,
  • FIG. 4C represents a section along the line CC of the previous figure,
  • FIG. 4D represents a view of a third embodiment of the lower surface of the hammer, and
  • FIGS. 5A to 5E represent different stages of the connection and cutting operations.

A la figure 1 on a une portion de machine 1 chargée de délivrer continuellement une bande de papier 2 à une machine de fabrication de cigarettes (non représentée) disposée en aval de la portion de machine représentée ici. La bande de papier 2 provient d'une bobine 20, fixée par un premier axe (non représenté) à la portion de machine 1 et en rotation autour de celui-ci, la bande de papier 2 se déroulant depuis la spire supérieure de la bobine 20, passant par dessus au moins un rouleau de raccord 6 dont la fonction sera expliquée plus bas et au moins un rouleau de guidage 10. Lorsque la bobine 20 est quasi vide, des moyens de transfert de bobine connus, par exemple ceux décrits dans la demande EP-A-0.509.958 ont déplacé la bobine 20 vers un deuxième axe de rotation, ont chargé une bobine pleine sur le premier axe de rotation, alors qu'un autre dispositif connu, comme par exemple l'un de ceux décrits dans le brevet EP-A-0.331.634 ou la demande EP-A-0.475.886 a ouvert la bobine pleine, suite de quoi un autre dispositif de prise et de transport, schématisé par la pince 11 sur la figure 1, a été prélever l'extrémité supérieure de la bande de papier 21 sur la bobine pleine puis l'a amenée, en passant par dessus la bande 2 et entre deux rouleaux d'entraînement 12A et 12B, capables de s'écarter pour laisser le passage de la pince 11 puis de se rapprocher et d'entraîner la bande de papier 21 à la même vitesse de déplacement longitudinal que la vitesse de déplacement de la bande de papier 2. Le dispositif de prise et de transport ainsi que les opérations mentionnées juste ci-dessus sont décrites en particulier dans le brevet EP-A-0.318.427. Les dispositifs et moyens mentionnés ci-dessus étant suffisamment décrits dans l'art antérieur, en particulier dans les documents cités, ils ne le seront pas plus précisément ici, et la figure 1 ne représente que les éléments mentionnés placés à proximité immédiate du dispositif selon l'invention, les bandes de papier 2 et 21 étant en position pour être raccordées.In FIG. 1 there is a portion of machine 1 responsible for continuously delivering a strip of paper 2 to a machine for making cigarettes (not shown) arranged downstream of the portion of machine shown here. The paper strip 2 comes from a reel 20, fixed by a first axis (not shown) to the portion of machine 1 and rotating around it, the paper strip 2 unwinding from the upper turn of the reel 20, passing over at least one connecting roll 6 whose function will be explained below and at least a guide roller 10. When the reel 20 is almost empty, known reel transfer means, for example those described in application EP-A-0,509,958 have moved the reel 20 to a second axis of rotation, have loaded a full coil on the first axis of rotation, while another known device, such as for example one of those described in patent EP-A-0.331.634 or application EP-A-0.475.886 opened the full reel, following which another gripping and transport device, shown diagrammatically by the clamp 11 in FIG. 1, was to take the upper end of the paper strip 21 from the full reel and then brought it, passing over the strip 2 and between two drive rollers 12A and 12B, capable to move aside to allow the passage of the clamp 11 then to come closer and entrain the paper strip 21 at the same speed of longitudinal movement as the speed of movement of the paper strip 2. The gripping and transport as well as the operations mentioned just above are described in particular in patent EP-A-0,318,427. The devices and means mentioned above being sufficiently described in the prior art, in particular in the documents cited, they will not be more precisely here, and FIG. 1 represents only the elements mentioned placed in the immediate vicinity of the device according to the invention, the paper strips 2 and 21 being in position to be connected.

Le dispositif selon l'invention est constitué principalement d'un bras de frappe 3 pouvant être mis en rotation et supportant un marteau 4, d'un dispositif de commande de frappe 5, d'un rouleau de raccord 6 et de moyens de commande 7. La manière dont ces différents éléments sont montés sur une paroi 13 de la portion de machine 1 est représentée à la figure 2. Le bras de frappe 3 comprend tout d'abord un support rotatif 30 relié à un axe de rotation 31 pivotant à l'intérieur de roulements à billes 32 disposés à l'intérieur d'une douille 33 fixée à la paroi 13. L'axe de rotation 31 est entraîné en rotation par des moyens moteurs 34 capables, sur commande, d'entraîner l'ensemble du bras de frappe 3 en rotation à une vitesse déterminée ou de le maintenir selon une position angulaire de repos déterminée. Le bras de frappe 3 comprend ensuite un dispositif de frappe constitué de deux tiges 35 capables de coulisser dans deux évidements cylindriques 30A du support rotatif 30, aménagés dans celui-ci selon une direction perpendiculaire à son axe de rotation, les extrémités supérieures (sur la figure) desdites tiges étant reliées par une barre de liaison 36 comportant une came 37 sur son extrémité arrière. Les autres extrémités des tiges 35 sont fixées à un marteau 4. Une extrémité d'un ressort 38 est logée dans un logement 30B aménagé dans une portion du support rotatif faisant face à la barre de liaison 36, l'autre extrémité dudit ressort appuyant sur cette barre de liaison, de manière à tendre à repousser l'ensemble du bras de frappe 3 et du marteau 4 vers le haut (sur les fig 1 et 2). Un dispositif de butée mécanique 39 est monté en opposition au ressort 38, constitué de préférence d'une portion de tige dont une extrémité est filetée et est fixée à l'intérieur d'un trou taraudé 30C aménagé dans le support rotatif 30, selon un axe commun avec celui du logement 30B, la face supérieure 40 du marteau 4 venant en butée contre l'autre extrémité de la tige. La position de l'extrémité de la tige faisant butée est réglable au moyen d'un écrou 39A. Ainsi, en position de repos, comme représenté sur les figures 1 et 2, le bras de frappe 3 et le marteau 4 sont en position rétractée, étant repoussés par le ressort 38, coulissant par les tiges 35 dans les évidements cylindriques 30A, la position exacte du bras de frappe 3, respectivement du marteau 4 étant déterminée par la butée 39. Dans cette position rétractée, la face inférieure 41 du marteau 4 est séparée du rouleau de raccord 6 par un léger espace, alors que la came 37 est séparé du dispositif de frappe 5 par un autre espace; de cette manière le bras de frappe 3 entraînant le marteau 4 peuvent pivoter avec l'axe de rotation 31, étant entraînés par les moyens moteurs 34, ceci sans interférence avec le dispositif de frappe 5 ou le rouleau de raccord 6; on voit sur la figure 2 que la came 37 est décalée de manière à permettre cette rotation. Vu la grande vitesse de rotation du bras de frappe 3, comme on le verra plus bas, et vu la masse relativement importante du marteau 4, il est nécessaire d'équilibrer le bras de frappe 3 afin de compenser la force centrifuge qui s'exerce sur le marteau 4. Pour ceci, une pièce d'équilibrage massive 36A peut être fixée sur la barre de liaison, ou alors le ressort 38 peut être suffisamment puissant afin que, lorsque le système est en rotation, le bras de frappe 3 reste en position de repos, c'est-à-dire face 40 du marteau en butée contre la butée 39.The device according to the invention mainly consists of a striking arm 3 which can be rotated and supporting a hammer 4, a striking control device 5, a connecting roller 6 and control means 7. The manner in which these different elements are mounted on a wall 13 of the machine portion 1 is shown in FIG. 2. The striking arm 3 first of all comprises a rotary support 30 connected to a rotation axis 31 pivoting inside ball bearings 32 arranged inside a bush 33 fixed to the wall 13. The axis of rotation 31 is driven in rotation by motor means 34 capable, on command, of driving the entire striking arm 3 in rotation at a determined speed or of maintaining it in an angular position determined rest. The striking arm 3 then comprises a striking device consisting of two rods 35 capable of sliding in two cylindrical recesses 30A of the rotary support 30, arranged therein in a direction perpendicular to its axis of rotation, the upper ends (on the figure) of said rods being connected by a connecting bar 36 comprising a cam 37 on its rear end. The other ends of the rods 35 are fixed to a hammer 4. One end of a spring 38 is housed in a housing 30B arranged in a portion of the rotary support facing the link bar 36, the other end of said spring pressing this connecting bar, so as to tend to push the assembly of the striking arm 3 and the hammer 4 upwards (in FIGS. 1 and 2). A mechanical stop device 39 is mounted in opposition to the spring 38, preferably consisting of a rod portion, one end of which is threaded and is fixed inside a tapped hole 30C arranged in the rotary support 30, according to a common axis with that of the housing 30B, the upper face 40 of the hammer 4 abutting against the other end of the rod. The position of the end of the rod making a stop is adjustable by means of a nut 39A. Thus, in the rest position, as shown in FIGS. 1 and 2, the striking arm 3 and the hammer 4 are in the retracted position, being pushed back by the spring 38, sliding by the rods 35 in the cylindrical recesses 30A, the position exact strike arm 3, respectively hammer 4 being determined by the stop 39. In this retracted position, the underside 41 of the hammer 4 is separated from the connecting roller 6 by a slight space, while the cam 37 is separated from the striking device 5 by another space; in this way the striking arm 3 driving the hammer 4 can pivot with the axis of rotation 31, being driven by the motor means 34, this without interference with the striking device 5 or the connecting roller 6; it can be seen in FIG. 2 that the cam 37 is offset so as to allow this rotation. Given the high speed of rotation of the striking arm 3, as will be seen below, and given the relatively large mass of the hammer 4, it is necessary to balance the striking arm 3 in order to compensate for the centrifugal force which is exerted on the hammer 4. For this, a massive balancing piece 36A can be fixed on the connecting bar, or the spring 38 can be strong enough so that, when the system is in rotation, the striking arm 3 remains in rest position, that is to say face 40 of the hammer in abutment against abutment 39.

Le dispositif de frappe 5 est constitué d'un châssis 50, fixé fermement à la paroi 13 de la machine 1, ledit châssis 50 supportant un vérin 51, de préférence pneumatique, dont le piston actionne une tige 52 munie d'une roulette 53 fixée à son extrémité libre au moyen d'un étrier. Lorsque le vérin 51 n'est pas actionné, la roulette 53 est en position rétractée, comme sur les figures 1 et 2 alors qu'en position de travail, la roulette 53 est en position abaissée, agissant sur la came 37, comme on le voit sur la figure 3. Lorsque la roulette 53 appuie sur la came 37, elle agit sur l'ensemble du bras pivotant 3, à l'opposé de l'effet exercé par le ressort 38, faisant coulisser les tiges 35 et poussant le marteau 4 jusqu'à ce que sa face inférieure 41 soit au contact des bandes de papier 21 et 2 en appui l'une sur l'autre et sur le rouleau de raccord 6.The striking device 5 consists of a frame 50, firmly fixed to the wall 13 of the machine 1, said frame 50 supporting a jack 51, preferably pneumatic, the piston of which actuates a rod 52 provided with a fixed wheel 53 at its free end by means of a stirrup. When the jack 51 is not actuated, the caster 53 is in the retracted position, as in FIGS. 1 and 2 while in the working position, the caster 53 is in the lowered position, acting on the cam 37, as can be seen in FIG. 3. When the caster 53 presses on the cam 37, it acts on the whole of the pivoting arm 3, opposite to the effect exerted by the spring 38, sliding the rods 35 and pushing the hammer 4 until its underside 41 is in contact with the strips of paper 21 and 2 resting one on the other and on the connecting roller 6.

La face inférieure 41 du marteau 4 en forme de portion de cylindre comprend des cannelures en relief ou un moletage, comme représenté à titre d'exemple à la figure 4A, constituées de préférence en deux réseaux perpendiculaires de cannelures parallèles, espacées entre elles d'une distance de 1 à 2 mm. D'autres types de cannelures ou d'autres dimensions de celles-ci pourraient aussi être envisagés.The underside 41 of the hammer 4 in the form of a portion of a cylinder comprises raised grooves or knurling, as shown by way of example in FIG. 4A, preferably constituted by two perpendicular networks of parallel grooves, spaced apart from each other. a distance of 1 to 2 mm. Other types of grooves or other dimensions of these could also be envisaged.

Les flèches sur les figures 4A, 4B et 4D indiquent le sens de déplacement de la face inférieure 41.The arrows in FIGS. 4A, 4B and 4D indicate the direction of movement of the lower face 41.

Les figures 4B et 4C montrent deux vues d'une autre forme d'exécution de la face inférieure 41, où celle-ci est séparée en deux portions par une rainure longitudinale 41B. Il est bien entendu que la face inférieure peut être séparée en plus de deux portions, chacune d'entre elles étant séparée par une rainure longitudinale. Une telle forme d'exécution permet de diminuer la force d'appui nécessaire et est particulièrement appropriée pour le raccordement des bandes de largeur importante, comme par exemple des bandes de papier ou d'un autre matériau d'emballage.FIGS. 4B and 4C show two views of another embodiment of the lower face 41, where the latter is separated into two portions by a longitudinal groove 41B. It is understood that the lower face can be separated in more than two portions, each of them being separated by a longitudinal groove. Such an embodiment makes it possible to reduce the necessary support force and is particularly suitable for the connection of strips of large width, such as for example strips of paper or of other packaging material.

La figure 4D montre encore une autre forme d'exécution de la face inférieure 41, celle-ci étant séparée en plusieurs portions par une ou des rainures 41C perpendiculaires au sens de déplacement de ladite face inférieure. Cette forme d'exécution est particulièrement appropriée pour le raccordement de bandes relativement rigides, afin de conserver une souplesse suffisante de la portion où les deux bandes sont superposées au raccordement, particulièrement dans le cas où la bande doit passer autour d'une ou de plusieurs poulies de relativement faible diamètre.FIG. 4D shows yet another embodiment of the lower face 41, this being separated into several portions by one or more grooves 41C perpendicular to the direction of movement of said one lower side. This embodiment is particularly suitable for the connection of relatively rigid bands, in order to maintain sufficient flexibility of the portion where the two bands are superimposed on the connection, particularly in the case where the band must pass around one or more relatively small diameter pulleys.

Il est évident que pour certains cas particuliers il est possible de combiner les formes d'exécution ci-dessus et d'avoir une face inférieure 41 séparée en plusieurs portions par une ou plusieurs rainures longitudinales 41B et une ou plusieurs rainures transversales 41C.It is obvious that for certain particular cases it is possible to combine the above embodiments and to have a lower face 41 separated into several portions by one or more longitudinal grooves 41B and one or more transverse grooves 41C.

Le rouleau de raccord 6 comprend une surface périphérique cylindrique d'appui lisse 60, sur laquelle la face inférieure de la bande de papier 2 est en appui, les deux bandes de papier superposées étant guidées sur cette surface par deux nervures de guidage circulaires 61, définissant les côtés de la surface d'appui 60. Deux autres surfaces d'appui 62 sont prévues de part et d'autre de la surface d'appui 60, leur fonction étant expliquée plus bas. Le rouleau de raccord 6 est relié à un axe en rotation 63, mis en rotation par des moyens moteurs 64. Comme précédemment, l'axe 63 pivote à l'intérieur de roulements à billes dont les garnitures extérieures sont fixes par rapport à la paroi 13.The connecting roller 6 comprises a smooth cylindrical peripheral surface of support 60, on which the underside of the paper strip 2 is in abutment, the two superimposed strips of paper being guided on this surface by two circular guide ribs 61, defining the sides of the bearing surface 60. Two other bearing surfaces 62 are provided on either side of the bearing surface 60, their function being explained below. The connecting roller 6 is connected to a rotating axis 63, rotated by motor means 64. As previously, the axis 63 pivots inside ball bearings whose outer linings are fixed relative to the wall 13.

Comme on le verra ultérieurement, l'opération de raccordement impose des chocs importants au dispositif, principalement à l'axe 63; des précautions particulières, connues de l'homme du métier, sont donc à prendre afin que cet axe ne soit pas endommagé et que le mouvement de rotation du rouleau de raccord 6 reste régulier.As will be seen later, the connection operation imposes significant shocks on the device, mainly on the axis 63; special precautions, known to those skilled in the art, are therefore to be taken so that this axis is not damaged and that the rotational movement of the connecting roller 6 remains regular.

Il est maintenant possible de décrire le déroulement du procédé de raccordement des deux bandes de papier 2 et 21.It is now possible to describe the process the method of connecting the two strips of paper 2 and 21.

En position de repos, le bras de frappe 3 est comme représenté sur la figure 1, soit en position rétractée. De préférence il sera orienté perpendiculairement à la position représentée sur la figure, comme suggéré en traits discontinus, de manière à laisser un maximum de place au dessus du rouleau de raccord 6 pour l'amenée de l'extrémité de la nouvelle bande de papier 21. Comme mentionné plus haut, des moyens connus ne faisant pas partie de l'invention ont détecté que la bobine 20 alimentant la machine de cigarettes était bientôt vide, ont amené une nouvelle bobine et procédé a un échange de bobines et après avoir ouvert la bobine pleine, ont amené l'extrémité libre de la bande de papier 21 par dessus le rouleau de raccord 6, en superposition avec la bande de papier 2. Toutes ces opérations ainsi que celles qui vont suivre se déroulent lorsque la machine de cigarettes fonctionne selon sa cadence nominale, c'est-à-dire que la bande de papier 2 circule à vitesse nominale, sans qu'il soit nécessaire de la ralentir. La bande de papier 21 en provenance de la bobine pleine est aussi entraînée, par les rouleaux 12A et 12B, à la même vitesse de déplacement que la bande 2, ces deux bandes pouvant être en contact sur une portion périphérique du rouleau de raccord 6 puisque alors il n'y a aucun glissement entre ces deux bandes de papier.In the rest position, the striking arm 3 is as shown in Figure 1, or in the retracted position. Preferably, it will be oriented perpendicular to the position shown in the figure, as suggested in broken lines, so as to leave a maximum of space above the connecting roll 6 for bringing the end of the new strip of paper 21 As mentioned above, known means not forming part of the invention have detected that the coil 20 supplying the cigarette machine is soon empty, have brought a new coil and have exchanged coils and after opening the coil full, brought the free end of the paper strip 21 over the connecting roller 6, superimposed on the paper strip 2. All these operations as well as those which follow will take place when the cigarette machine operates according to its nominal rate, that is to say that the paper strip 2 circulates at nominal speed, without it being necessary to slow it down. The paper strip 21 coming from the full reel is also driven, by the rollers 12A and 12B, at the same speed of movement as the strip 2, these two strips being able to be in contact on a peripheral portion of the connecting roll 6 since then there is no sliding between these two strips of paper.

Lorsque les moyens de détection mentionnés ci-dessus détectent qu'il ne reste que quelques spires de la bande de papier 2 sur la bobine 20, un signal est transmis à l'unité de commande 70 qui commande à son tour les moyens de mise en rotation 34 du bras de frappe 3; celui-ci commence alors à tourner sur son axe 31, les moyens d'entraînement 34 accélérant ce mouvement jusqu'à ce que la vitesse tangentielle de la face inférieure 41 du marteau 4 atteigne la vitesse de défilement des deux bandes de papier 2 et 21. Durant ce mouvement de rotation, le bras de frappe 3 est toujours en position rétractée, c'est-à-dire qu'il peut pivoter librement sur son axe 31. Lorsque cette vitesse de rotation est atteinte et que le bras de rotation se trouve dans une position angulaire approximativement correspondante à celle représentée en traits discontinus sur la figure 1, et ayant momentanément sa came 37 hors d'action de la roulette 53, l'unité de commande 70 actionne brusquement le vérin 51 de manière à abaisser sa tige 52 et la roulette 53 que cette tige porte à son extrémité inférieure. Comme on le voit sur la figure 3, le bras de frappe 3 qui a continué son mouvement de rotation est entré en contact avec la roulette 53 par l'intermédiaire de la face d'attaque 37A de la came 37, ce qui abaisse (relativement à la figure 3) l'ensemble du bras de frappe 3, amenant le marteau 4, respectivement sa face inférieure 41, à presser fortement sur la face supérieure de la bande de papier 21. En fait ce mouvement n'est pas ponctuel mais s'effectue durant une portion de tour du bras de frappe 3, la longueur de la zone d'action 37B de la came 37 étant telle que, lors du mouvement de rotation, lorsque la portion avant 41A de la face inférieure 41 du marteau 4 arrive à proximité immédiate des deux bandes de papier 2 et 21, la bras de frappe 3 se trouve complètement enfoncé, et que la face inférieure 41 frappe et comprime fortement les deux bandes de papier 2 et 21 l'une contre l'autre, la résistance d'appui étant fournie par le rouleau de raccord 6, durant une portion de tour du bras de frappe 3 correspondant à la longueur de la face inférieure 41. Durant ce passage, les deux bandes de papier 2 et 21 sont donc fortement comprimées entre la face inférieure 41 du marteau 4 et la surface d'appui périphérique 60 du rouleau de raccord 6, cet effet de compression étant encore amplifié par les cannelures de la face inférieur 41 comme décrites plus haut. Par ceci, les deux bandes de papier 2 et 21 sont donc intimement réunies l'une avec l'autre sur une portion de longueur 22.When the detection means mentioned above detect that there are only a few turns of the paper strip 2 on the reel 20, a signal is transmitted to the control unit 70 which in turn controls the setting means rotation 34 of the striking arm 3; the latter then begins to rotate on its axis 31, the drive means 34 accelerating this movement until the tangential speed of the lower face 41 of the hammer 4 reaches the speed of movement of the two strips of paper 2 and 21. During this rotational movement, the striking arm 3 is always in the retracted position, this is ie it can pivot freely on its axis 31. When this speed of rotation is reached and the rotation arm is in an angular position approximately corresponding to that shown in broken lines in Figure 1, and having momentarily its cam 37 out of action of the wheel 53, the control unit 70 abruptly actuates the jack 51 so as to lower its rod 52 and the wheel 53 which this rod carries at its lower end. As can be seen in FIG. 3, the striking arm 3 which has continued its rotational movement has come into contact with the caster 53 via the leading face 37A of the cam 37, which lowers (relatively in FIG. 3) the entire striking arm 3, causing the hammer 4, respectively its lower face 41, to press strongly on the upper face of the strip of paper 21. In fact this movement is not punctual but s '' performs during a turn portion of the striking arm 3, the length of the action area 37B of the cam 37 being such that, during the rotational movement, when the front portion 41A of the lower face 41 of the hammer 4 arrives in the immediate vicinity of the two strips of paper 2 and 21, the striking arm 3 is fully depressed, and the underside 41 strikes and strongly compresses the two strips of paper 2 and 21 against each other, the resistance support being provided by the connecting roller 6, during a portion of rotation of the striking arm 3 corresponding to the length of the lower face 41. During this passage, the two strips of paper 2 and 21 are therefore strongly compressed between the lower face 41 of the hammer 4 and the peripheral bearing surface 60 of the connecting roller 6, this compression effect being further amplified by the grooves of the lower face 41 as described above. By this, the two strips of paper 2 and 21 are therefore intimately united with each other over a portion of length 22.

Simultanément à cette opération de raccordement des deux bandes de papier 2 et 21, il est nécessaire de couper la bande 21 en avant du raccordement ainsi que la bande 2 en arrière dudit raccordement afin de n'avoir plus qu'une seule bande, se dévidant à partir de la bobine pleine et alimentant la machine à cigarettes. Pour ceci, on peut se référer aux figures 5A à 5E qui décrivent différentes phases des opérations de raccordement et de coupe. Comme on le voit sur ces figures, le marteau 4 est muni d'une garniture de coupe avant 8 alors qu'une garniture de coupe arrière 9 est disposée immédiatement derrière le rouleau de raccord 6. La garniture de coupe avant 8 est composée principalement de deux leviers coudés 80 pivotant autour d'un axe 81, disposés sur les deux faces latérales du marteau 4 (voir figure 2), les extrémités avant 82 desdits leviers étant réunies par une lame coupante 83 alors que les extrémités arrières des mêmes leviers sont conformées en surfaces d'appui 84. La garniture de coupe avant est complétée de deux ressorts 85, un sur chaque face du marteau 4, et agissant sur chaque levier 80 de manière à garder la lame coupant 83 en position relevée; cette position relevée étant déterminée par deux butées 86. La garniture de coupe arrière 9 est composée principalement d'un levier 90 disposé d'un côté des bandes de papier 2 et 21, pivotant autour d'un axe 91, légèrement en arrière et parallèle à l'axe de rotation du rouleau de raccord 6. Ce levier 90 comporte une portion 92, supportant une lame coupante 93 disposée en travers et sous la bande de papier 2. L'extrémité 94 du levier 90 est destinée à être actionnée par une portion de tige 95, en saillie sur la face latérale du marteau 4, selon une manière décrite plus bas. Des moyens a ressort 96 maintiennent le levier 90 en position comme représentée à la figure 5A. Il serait aussi possible que la lame 93 soit supportée par deux leviers 90 disposés symétriquement de chaque côté des bandes de papier et commandés par deux portions de tige 95 disposées sur les deux faces latérales opposées du marteau 4. Sur la figure 5A on voit les deux bandes de papier 2 et 21 se déroulant à la même vitesse, en appui sur le rouleau de raccord 6, ainsi que le marteau 4, encore en position rétractée, qui se rapproche par son mouvement de rotation; les garnitures de coupe avant 8 et arrière 9 sont aussi en position rétractée. A la figure 5B, le marteau 4 a été abaissé selon la manière décrite plus haut, de façon à ce que la portion avant 41A de sa face inférieure 41 arrive au contact de la face supérieure de la bande de papier 21 et commence son raccordement avec la bande de papier 2. A ce moment, les surfaces d'appui 84 des leviers coudés 80, qui dépassent légèrement de l'enveloppe constituée par la surface 41, entrent en contact avec les surfaces périphériques de contact 62 du rouleau de raccord 6, toutefois sans abaisser suffisamment la lame 83 qui n'est pas encore en contact avec la bande de papier 21. On remarque aussi que la portion de tige 95 a commencé à agir sur l'extrémité 94 du levier 90, toutefois sans que le contact ne soit encore établi entre la lame 93 et la bande de papier 2. A la figure 5C, le marteau 4 s'est encore avancé, une première portion du raccordement 22 des deux bandes de papier 2 et 21 a déjà été effectuée, les surfaces d'appui 84 des leviers coudés 80 sont directement appuyées contre les surfaces d'appui périphériques 62 du rouleau de raccord 6, abaissant ainsi la lame 83 et coupant la bande de papier 21 directement avant le début du raccordement. Le levier 90 poursuit lui aussi sa course, toutefois sans que la lame 93 ne soit encore active. La figure 5D montre le même dispositif un court instant plus tard, une plus grande longueur de raccordement a été effectuée, les surfaces d'appui 84 se dégagent des surfaces d'appui périphériques 62, faisant que sous l'action du ressort 85 la lame 83 commence à se relever, alors que maintenant l'extrémité 94 du levier 90 est complètement engagée par la portion de tige 95, faisant que la lame 93 coupe la bande de papier 2 en une position en arrière du raccordement 22, alors que ce dernier n'est pas encore terminé.Simultaneously with this operation of connecting the two strips of paper 2 and 21, it is necessary to cut the strip 21 in front of the connection as well as the strip 2 behind said connection so as to have only one strip left, unwinding from the full reel and feeding the cigarette machine. For this, reference can be made to FIGS. 5A to 5E which describe different phases of the connection and cutting operations. As can be seen in these figures, the hammer 4 is provided with a front cutting pad 8 while a rear cutting pad 9 is disposed immediately behind the connecting roller 6. The front cutting pad 8 is mainly composed of two bent levers 80 pivoting about an axis 81, arranged on the two lateral faces of the hammer 4 (see FIG. 2), the front ends 82 of said levers being joined by a cutting blade 83 while the rear ends of the same levers are shaped in bearing surfaces 84. The front cutter trim is completed by two springs 85, one on each face of the hammer 4, and acting on each lever 80 so as to keep the cutting blade 83 in the raised position; this raised position being determined by two stops 86. The rear cutter trim 9 is mainly composed of a lever 90 disposed on one side of the paper strips 2 and 21, pivoting about an axis 91, slightly back and parallel to the axis of rotation of the connecting roller 6. This lever 90 comprises a portion 92, supporting a cutting blade 93 arranged in through and under the strip of paper 2. The end 94 of the lever 90 is intended to be actuated by a portion of rod 95, projecting from the lateral face of the hammer 4, in a manner described below. Spring means 96 hold the lever 90 in position as shown in Figure 5A. It would also be possible for the blade 93 to be supported by two levers 90 arranged symmetrically on each side of the paper strips and controlled by two portions of rod 95 disposed on the two opposite lateral faces of the hammer 4. In FIG. 5A we see the two paper strips 2 and 21 unrolling at the same speed, pressing on the connecting roller 6, as well as the hammer 4, still in the retracted position, which approaches by its rotational movement; the front 8 and rear 9 trim fittings are also in the retracted position. In FIG. 5B, the hammer 4 has been lowered in the manner described above, so that the front portion 41A of its lower face 41 comes into contact with the upper face of the paper strip 21 and begins its connection with the strip of paper 2. At this moment, the bearing surfaces 84 of the bent levers 80, which protrude slightly from the envelope formed by the surface 41, come into contact with the peripheral contact surfaces 62 of the connecting roller 6, however without sufficiently lowering the blade 83 which is not yet in contact with the paper strip 21. It is also noted that the rod portion 95 has started to act on the end 94 of the lever 90, however without the contact making is still established between the blade 93 and the paper strip 2. In FIG. 5C, the hammer 4 has advanced further, a first portion of the connection 22 of the two paper strips 2 and 21 has already been made, the surfaces d '' support 84 bent levers 8 0 are directly pressed against the peripheral bearing surfaces 62 of the connection roller 6, thus lowering the blade 83 and cutting the paper strip 21 directly before the start of the connection. The lever 90 also continues its course, however without the blade 93 is still active. FIG. 5D shows the same device a short instant later, a greater length of connection has been made, the bearing surfaces 84 disengage from the peripheral bearing surfaces 62, causing the blade 85 to act under the action of the spring 83 begins to rise, while now the end 94 of the lever 90 is fully engaged by the rod portion 95, causing the blade 93 to cut the strip of paper 2 in a position behind the connection 22, while the latter is not finished yet.

La fin des opérations de raccordement et de coupes est représentée à la figure 5E où, le marteau 4 est en position où il termine le raccordement 22 des deux bandes de papier, celles-ci ayant déjà été coupées, la garniture de coupe avant 8 s'est complètement relevée alors que le levier 90 s'est dégagé de la portion de tige 95 et a été ramené en position de repos sous l'action du ressort 96. Immédiatement après cette étape, la came 37 sera hors d'action de la roulette 53, le marteau 4 reprenant alors sa position rétractée sous l'action du ressort 38.The end of the connection and cutting operations is represented in FIG. 5E where, the hammer 4 is in position where it terminates the connection 22 of the two strips of paper, these having already been cut, the cutting trim before 8 s 'is fully raised while the lever 90 is released from the rod portion 95 and has been returned to the rest position under the action of the spring 96. Immediately after this step, the cam 37 will be out of action of the roller 53, the hammer 4 then returning to its retracted position under the action of the spring 38.

Le mouvement de rotation du bras de frappe 3 peut maintenant être arrêté, cette décélération pouvant se faire sur plusieurs tours avant que le bras 3 retrouve sa position de repos. En même temps, les extrémités coupées des bandes de papier 2 et 21 sont éliminées par des moyens connus décrits dans l'une ou l'autre des publications mentionnées précédemment. Il ne restera plus qu'à recommencer le cycle décrit ci-dessus lorsque les moyens de détection auront détecté que la nouvelle bobine est presque vide.The rotary movement of the striking arm 3 can now be stopped, this deceleration being able to take place over several turns before the arm 3 returns to its rest position. At the same time, the cut ends of the paper strips 2 and 21 are eliminated by known means described in one or other of the publications mentioned above. It will only remain to restart the cycle described above when the detection means have detected that the new coil is almost empty.

Comme l'homme du métier peut s'en rendre compte, certaines précautions sont à prendre afin d'obtenir un raccordement correct et fiable des deux bandes de papier; en particulier les moyens de commande 7, par l'intermédiaire de l'unité de commande doivent pouvoir assurer que la vitesse périphérique imposée à la surface inférieure 41 du marteau 4 est égale à celle des deux bandes de papier 2 et 21; ceci peut se faire en comparant des signaux indiquant la vitesse de bandes de papier, par exemple en provenance des moyens moteurs 64 du rouleau de raccord 6 et des moyens moteurs 34 du bras de frappe 3. De même, l'ordre de déclenchement du vérin 51 doit pouvoir être envoyé lorsque le bras de frappe 3 est dans une position assez bien déterminée, relevée soit par un capteur indépendant, soit sur les moyens moteurs 64. Les moyens moteurs 34 et 64 peuvent être de n'importe quel type idoine, leur synchronisation pouvant être obtenue par des moyens mécaniques ou électroniques.As those skilled in the art can appreciate, certain precautions must be taken in order to obtain a correct and reliable connection of the two strips of paper; in particular the control means 7, through the control unit must be able to ensure that the peripheral speed imposed on the lower surface 41 of the hammer 4 is equal to that of the two strips of paper 2 and 21; this can be done by comparing signals indicating the speed of paper strips, for example from the drive means 64 of the connecting roller 6 and the drive means 34 of the striking arm 3. Similarly, the actuation order of the jack 51 must be able to be sent when the striking arm 3 is in a fairly well determined position, raised either by an independent sensor, or on the drive means 64. The drive means 34 and 64 can be of any suitable type, their synchronization obtainable by mechanical or electronic means.

La position de la surface inférieure 41 du marteau 4 en position d'extension doit être exactement située par rapport à la surface d'appui 60 du rouleau 6, afin d'effectuer un raccordement correct et fiable des deux bandes de papier, cette position relative étant déterminée par les positions relatives de la roulette 53 et de la surface de la zone d'action 37B de la came 37. Pour ceci, le bras de frappe 3 est positionné de telle manière que la surface inférieure 41 soit sécante à la surface d'appui 60 du rouleau 6 de l'ordre de 1 à 2 mm lorsque ces deux surfaces sont en contact; cette différence de 1 à 2 mm peut être absorbée par le coussin d'air du vérin 51, ce qui permet de relever d'autant le bras de frappe 3, vu que la surface inférieure 41 ne peut être que tangente à la bande de papier 21. Le bord d'attaque avant 41A du marteau 4 est arrondi, de manière à permettre ce léger mouvement du marteau lorsque celui-ci arrive au contact des bandes de papier sur le rouleau d'appui 6. La surpression engendrée ainsi augmente encore la pression d'appui de la surface inférieure 41 sur les bandes de papier et sur la surface d'appui 60. La très forte pression engendrée par les deux génératrices des surfaces 41 et 60 coopérant à un instant donné avec une force d'appui de l'ordre de 2000N (200 kg) pour une largeur de papier de l'ordre de 50 mm, cette pression étant encore localement augmentée par les cannelures de la surface 41, permet une liaison intime des deux bandes de papier qui pourrait s'apparenter à une soudure à froid. La séparation de la surface 41 en plusieurs portions (figure 4B et 4C) peut permettre de limiter la force d'appui pour des bandes de largeur importante.The position of the lower surface 41 of the hammer 4 in the extended position must be exactly located relative to the bearing surface 60 of the roller 6, in order to effect a correct and reliable connection of the two strips of paper, this relative position being determined by the relative positions of the caster 53 and the surface of the action zone 37B of the cam 37. For this, the striking arm 3 is positioned in such a way that the lower surface 41 intersects the surface d 'support 60 of the roller 6 of the order of 1 to 2 mm when these two surfaces are in contact; this difference of 1 to 2 mm can be absorbed by the air cushion of the jack 51, which makes it possible to raise the striking arm 3 all the same, since the lower surface 41 can only be tangent to the strip of paper 21. The leading leading edge 41A of the hammer 4 is rounded, so as to allow this slight movement of the hammer when the latter comes into contact with the paper strips on the support roller 6. The overpressure thus generated further increases the support pressure of the lower surface 41 on the strips of paper and on the bearing surface 60. The very high pressure generated by the two generators of the surfaces 41 and 60 cooperating at a given instant with a bearing force of the order of 2000N (200 kg) for a width of paper of the order of 50 mm, this pressure being further locally increased by the grooves of the surface 41, allows an intimate connection of the two strips of paper which could be likened to cold welding. The separation of the surface 41 into several portions (FIGS. 4B and 4C) can make it possible to limit the bearing force for strips of large width.

En variante, il serait aussi possible d'installer le rouleau d'appui 6 sur un axe 63 monté sur des moyens supports élastiques capables d'absorber cette différence de position de 1 à 2 mm.As a variant, it would also be possible to install the support roller 6 on an axis 63 mounted on elastic support means capable of absorbing this difference in position from 1 to 2 mm.

A part les réglages mentionnés ci-dessus, le dispositif selon l'invention ne nécessite aucun réglage de la coordination des moyens de coupe puisque ceux-ci sont directement commandés par le mouvement du marteau 4.Apart from the adjustments mentioned above, the device according to the invention does not require any adjustment of the coordination of the cutting means since these are directly controlled by the movement of the hammer 4.

Le dispositif de raccordement a été décrit ici selon une configuration où les bandes de papier 2 et 21 circulent selon des plans approximativement horizontaux; il est évident qu'il fonctionnerait de la même manière pour un déplacement des bandes de papier selon un plan approximativement vertical; dans ce cas les figures seraient à pivoter d'un quart de tour, dans un sens ou dans l'autre. En fait, l'angle dans lequel sont situées les bandes de papier dépend premièrement de la configuration générale de la machine, il peut donc être quelconque, le dispositif de raccordement étant positionné en conséquence.The connection device has been described here according to a configuration where the paper strips 2 and 21 circulate in approximately horizontal planes; it is obvious that it would work in the same way for a displacement of the strips of paper in an approximately vertical plane; in this case the figures would have to be turned a quarter of a turn, in one direction or the other. In fact, the angle in which the paper strips are located depends firstly on the general configuration of the machine, so it can be any, the connection device being positioned accordingly.

Comme on l'a vu ci-dessus les pièces mécaniques, notamment la roulette 53, la came 37, le marteau 4 et le rouleau de raccord 6 subissent des chocs mécaniques importants; ils seront donc choisis en matériaux aptes à supporter ces chocs, de même que les pièces qui les supportent.As seen above, the mechanical parts, in particular the caster 53, the cam 37, the hammer 4 and the connecting roller 6 undergo significant mechanical shocks; they will therefore be chosen from materials capable of withstanding these shocks, as well as the parts which support them.

Vu l'impact important imposé par le marteau 4 aux deux bandes à raccorder, ainsi que la possibilité d'adapter la conformation de la surface inférieure 41 selon les besoins et d'ajuster la force d'impact par le réglage de position de la roulette 53 par rapport à la came 37, il est possible avec le dispositif décrit ci-dessus de raccorder de nombreuses sortes de rubans, aussi bien des rubans très fins et fragiles que des bandes minces métalliques comme des bandes d'aluminium; ce dispositif permet aussi le raccordement de bandes en matériaux synthétiques ou alors en matériaux constitués de plusieurs couches superposées. En particulier ce dispositif permet le raccordement de toutes les sortes de papiers ou d'autres matériaux se présentant en bandes utilisés dans l'industrie du tabac, ceci même pour des bandes de largeur relativement importante et quelle que soit l'utilisation possible de cette bande. L'avantage principal est que ce raccordement peut se faire sans interrompre le déroulement de la bande, soit sans perte de productivité de la machine de fabrication et avec des moyens de synchronisation des moyens de coupe extrêmement simples. Dans le cas d'une bande comportant sur au moins une face un motif imprimé se reproduisant périodiquement selon un certain pas, la machine sera avantageusement complétée d'un dispositif complémentaire permettant de repérer l'emplacement d'un motif sur la bande neuve et d'éliminer la partie de la bande où se trouve le raccordement de manière à ce que les motifs ne soient pas décalés pour la suite des opérations.In view of the significant impact imposed by the hammer 4 on the two bands to be connected, as well as the possibility of adapting the conformation of the lower surface 41 as required and of adjusting the impact force by adjusting the position of the caster 53 relative to the cam 37, it is possible with the device described above to connect many kinds of ribbons, both very thin and fragile ribbons as thin metallic strips such as aluminum strips; this device also allows the connection of strips of synthetic materials or of materials made up of several superimposed layers. In particular, this device allows the connection of all kinds of paper or other material presented in strips used in the tobacco industry, this even for strips of relatively large width and whatever the possible use of this strip. . The main advantage is that this connection can be made without interrupting the unwinding of the strip, ie without loss of productivity of the manufacturing machine and with means of synchronization of the extremely simple cutting means. In the case of a strip comprising on at least one face a printed pattern reproducing periodically according to a certain pitch, the machine will advantageously be supplemented with an additional device making it possible to identify the location of a pattern on the new strip and d '' eliminate the part of the strip where the connection is located so that the patterns are not offset for the rest of the operations.

Claims (13)

  1. Device for joining a portion of length of a first strip (21) of a flexible material to a portion of the same length of a second strip (2) of the same flexible material, the two said strips travelling in said device at a given speed along approximately parallel paths, being in contact one on the other and on a peripheral surface sector (60) of a join roller (6),
       characterized in that
       said device comprises a striking arm (3) rotating in a plane perpendicular to the planes of the two said strips (2, 21) and parallel to their direction of movement, a hammer (4) including a striking surface (41) in the form of a portion of cylinder and knurled, [the hammer] being fixed to one end of the striking arm, said hammer being capable, over a portion of its course of rotation, of presenting said striking surface (41) in immediate proximity to the two strips (2, 21) resting on the join roller (6), according to a tangential movement of the same direction as the direction of movement of the two strips and at the same tangential speed as their speed of movement, and of compressing said two strips over their said portion of length (22) between said striking surface (41) and the join roller (6).
  2. Joining device according to claim 1, characterized in that the striking arm (3) comprises means for radial displacement (30A, 35, 37, 38) of the hammer (4) permitting either its retraction, so that, over the portion of its course of rotation near the two strips (2, 21), its striking surface (41) is spaced from the two said strips, or else its extension in order that, over the same portion of its course of rotation, the same striking surface (41) may be in contact with the two said strips (2, 21).
  3. Joining device according to claim 2, characterized in that the striking arm (3) is made up of at least one rod (35), at one end of which the hammer (4) is fixed, said rod sliding radially in the plane of rotation of said striking arm within a hollow (30A) of a rotary support (30) including the rotation shaft (31) of said striking arm, said radial displacement means being made up, on the one hand, of a spring (38) holding the hammer (4) in retracted position, and on the other hand, of a cam (37) fixed to the other end of said rod (35) than the one supporting the hammer, a small wheel (53) fixed to the piston (52) of a jack (51), the body of which is integral with the frame (13), acts upon the cam (37), when said jack (51) is actuated, for moving said rod (35) radially in order to bring the hammer (4) into extension position.
  4. Joining device according to one of the preceding claims, characterized in that the striking surface (41) is separated into several portions, each of them being separated from the adjacent portion by a longitudinal groove (41B) and/or a transverse groove (41C).
  5. Joining device according to one of the preceding claims, characterized in that the striking arm (3) is connected to motor means (34) via a rotation shaft (31), said motor means being capable of holding the striking arm (3) stopped in a given angular position or of causing it to pivot at a speed such that the tangential speed of the striking surface (41) of the hammer (4) is equal to the speed of longitudinal movement of the strips (2, 21) of flexible material.
  6. Joining device according to one of the preceding claims, characterized in that it further comprises a front cutting fixture (8) intended to cut the end of the strip (21) of flexible material in front of the join (22) of the two said strips (2, 21) and a rear cutting fixture (9) intended to cut the end of the strip (2) of flexible material behind the join (22) of the two said strips (2, 21).
  7. Joining device according to claim 6, characterized in that the front cutting fixture (8) is composed of two levers (80) pivoting about an axis (81) parallel to the axis of rotation of the striking arm (3) and disposed on the two side faces of the hammer (4), the front ends of said levers (80) extending beyond the front face of the hammer (4) and supporting a cutting blade (83), the length of which is at least equal to the width of the strip (21) to be cut, the rearward ends (84) of said levers (80) extending beyond the striking surface (41) of the hammer (4), said front cutting fixture (8) being capable of assuming a resting position under the effect of spring means (85), the cutting blade (83) then being disengaged from the strip (21) to be cut, and a working position, the rearward ends (84) of the levers (80) being actuated by two contact surfaces (62) of the join roller (6) for engaging the cutting blade (83) across the strip (21) of flexible material to be cut.
  8. Joining device according to one of the claims 6 or 7, characterized in that the rear cutting fixture (9) is composed of at least one lever (90) pivoting about an axis (91) parallel to the axis of rotation of the join roller (6) and disposed behind said roller on the same frame (13), one portion of said lever supporting a cutting blade (93), the length of which is at least equal to the width of the strip (2) to be cut, said rear cutting fixture (9) being capable of assuming a resting position under the effect of spring means (96), the cutting blade (93) then being disengaged from the strip (2) to be cut, and a working position, one end (94) of said lever (90) being actuated by a rod portion (95) projecting from a side face of the hammer (4) for engaging the cutting blade (93) across the strip (2) of flexible material to be cut.
  9. Joining device according to one of the claims 7 or 8, characterized in that the cutting blade (83) of the front cutting fixture (8) and the cutting blade (93) of the rear cutting fixture (9) are engaged across the strips (21, 2) to be cut when the hammer (4) is in extension position.
  10. Joining device according to one of the preceding claims, characterized in that it further comprises control means (7) including a control unit (70) capable of detecting that one of the reels (20) supplying one of the strips (2) of flexible material is almost empty, of controlling the setting in rotation of the striking arm (3), and of regulating its speed of rotation so that the tangential speed of the striking surface (41) of the hammer (4) is equal to the speed of travel of the two strips (2, 21), then of controlling the action of the striking-control jack (51) when the angular position of the striking arm (3) is in a first given position, then of causing the action of the jack to cease when the join (22) has been effected, and of stopping the rotational movement of the striking arm (3) in a second given angular position.
  11. Use of a joining device according to one of the preceding claims for joining two strips of paper.
  12. Use of a joining device according to one fo the claims 1 to 10 for joining two strips of paper of the cigarette-paper or tipping-paper type, on a cigarette-making machine.
  13. Use of a joining device according to one of the claims 1 to 10 for joining two thin strips of aluminium.
EP19930810887 1993-12-16 1993-12-16 Device for connecting tapes of flexible material Expired - Lifetime EP0662437B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE1993600282 DE69300282T2 (en) 1993-12-16 1993-12-16 Device for joining tapes of soft material.
EP19930810887 EP0662437B1 (en) 1993-12-16 1993-12-16 Device for connecting tapes of flexible material
CZ942578A CZ281885B6 (en) 1993-12-16 1994-10-19 Device for connecting bands of flexible material
US08/355,937 US5827166A (en) 1993-12-16 1994-12-14 Device for joining strips of a flexible material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19930810887 EP0662437B1 (en) 1993-12-16 1993-12-16 Device for connecting tapes of flexible material

Publications (2)

Publication Number Publication Date
EP0662437A1 EP0662437A1 (en) 1995-07-12
EP0662437B1 true EP0662437B1 (en) 1995-07-19

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ID=8215092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930810887 Expired - Lifetime EP0662437B1 (en) 1993-12-16 1993-12-16 Device for connecting tapes of flexible material

Country Status (3)

Country Link
EP (1) EP0662437B1 (en)
CZ (1) CZ281885B6 (en)
DE (1) DE69300282T2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0716996A2 (en) 1994-12-12 1996-06-19 Fabriques De Tabac Reunies S.A. Method and device for preparing and opening of a reel
US5699978A (en) * 1995-02-14 1997-12-23 Tokyo Automatic Machinery Works, Ltd. Tear tape changer
US6547179B1 (en) 1998-02-05 2003-04-15 Vits Maschinenbau Gmbh Method and apparatus for shortening the splice tail in a flying splice roll changer
DE10041969B4 (en) * 2000-08-25 2012-03-29 Goss Contiweb B.V. Method and device for shortening the flag following a roll change

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50207795D1 (en) 2002-08-14 2006-09-21 Hauni Maschinenbau Ag Method and device for joining material webs
ES2277976T3 (en) * 2002-08-14 2007-08-01 Hauni Maschinenbau Ag PROCEDURE AND DEVICE FOR JOINING MATERIAL BANDS.
CN111031777B (en) * 2014-01-10 2021-06-08 深圳市宝尔威精密机械有限公司 Material belt connecting machine
DE102020108158A1 (en) * 2020-03-25 2021-09-30 Khs Gmbh Process for packaging products and packaging system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63165258A (en) * 1986-12-25 1988-07-08 Tokyo Jido Kikai Seisakusho:Kk Automatic connecting device for band like material
JPH03267246A (en) * 1990-03-16 1991-11-28 Hitachi Ltd Continuous unwinding device for film material
DE69105084T2 (en) * 1990-08-24 1995-05-18 Tabac Fab Reunies Sa Device and method for opening a roll of paper and for connecting from the end of one paper web to the end of another paper web.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0716996A2 (en) 1994-12-12 1996-06-19 Fabriques De Tabac Reunies S.A. Method and device for preparing and opening of a reel
US5699978A (en) * 1995-02-14 1997-12-23 Tokyo Automatic Machinery Works, Ltd. Tear tape changer
US6547179B1 (en) 1998-02-05 2003-04-15 Vits Maschinenbau Gmbh Method and apparatus for shortening the splice tail in a flying splice roll changer
DE10041969B4 (en) * 2000-08-25 2012-03-29 Goss Contiweb B.V. Method and device for shortening the flag following a roll change

Also Published As

Publication number Publication date
EP0662437A1 (en) 1995-07-12
DE69300282D1 (en) 1995-09-21
CZ257894A3 (en) 1995-07-12
DE69300282T2 (en) 1996-03-21
CZ281885B6 (en) 1997-03-12

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