EP0453984B1 - Device for jogging sheets - Google Patents

Device for jogging sheets Download PDF

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Publication number
EP0453984B1
EP0453984B1 EP91106311A EP91106311A EP0453984B1 EP 0453984 B1 EP0453984 B1 EP 0453984B1 EP 91106311 A EP91106311 A EP 91106311A EP 91106311 A EP91106311 A EP 91106311A EP 0453984 B1 EP0453984 B1 EP 0453984B1
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EP
European Patent Office
Prior art keywords
sheet
rollers
roller
jogging
support
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
EP91106311A
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German (de)
French (fr)
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EP0453984A3 (en
EP0453984A2 (en
Inventor
Jean-Claude Rebeaud
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Bobst Mex SA
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Bobst SA
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Publication of EP0453984A2 publication Critical patent/EP0453984A2/en
Publication of EP0453984A3 publication Critical patent/EP0453984A3/en
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Publication of EP0453984B1 publication Critical patent/EP0453984B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/16—Inclined tape, roller, or like article-forwarding side registers
    • B65H9/166—Roller

Definitions

  • the present invention relates to a device for jogging elements in the form of plates or sheets, used in a station for introducing a machine for working such elements for the production of packaging, as defined in the preamble of claim 1.
  • such machines generally comprise an introduction station with a margin table provided with a passage the length of which, in the direction of travel of the sheets, is at least equal to that of the maximum format of the sheets to be worked.
  • a sheet is on the margin table, it is stopped by front margin tabs.
  • a pair of rollers or rollers lower and upper pinches an edge of the sheet and, by rotation, pulls it laterally against a lateral jogging rule.
  • the axis of rotation of the two rollers is oriented essentially perpendicular to the direction of travel of the sheets.
  • the lower roller driven in rotation
  • the upper roller free in rotation
  • the upper roller on the one hand, has premature wear since, vulcanized, it is not entrained and, on the other hand, has a tendency to plow the sheet at the first contact when the roller is at stop. It should be noted that in this case the sheet is generally pushed from behind using auxiliary means.
  • the present invention therefore aims to eliminate the drawbacks mentioned above. This object is achieved by means of a jogging device according to claim 1.
  • FIG. 1 shows a packet of sheets F, the last lower of which is taken by a suction table Ta to be transferred between two large rollers R1, R2 intended, as soon as the table Ta has released the sheet F, to pull the latter out of the bottom of the packet to introduce it into the longitudinal passage of a margin table M.
  • This passage is delimited by six pairs P1 - P3 of lower rollers 1 and upper 2.
  • Each lower roll 1 is located below the passage of the sheet, each top roll above.
  • the six pairs P1 - P3 are divided into two groups, one of which is located on the lateral side conductor, and the other on the opposite driver side.
  • the 3 pairs P1 - P3 of each group are distributed over the entire length of the table, that is to say that a first pair P1 is located upstream (relative to the direction of travel of the sheet F), the second P2 in the middle and the third downstream.
  • the length of the margin table M is at least equal to that of the maximum format of sheets to be worked.
  • the lower rollers 1 made of smooth steel, are intended to support and transport the sheet F. All the lower rollers 1 of the same group, mounted in rotation on a side bar 10 (FIG. 2) are extended on the free side by a tip shaft 11 on which is keyed a toothed pulley 12 engaged with a toothed belt 13 driven in motion by a toothed pulley 14 provided at the upstream end of the side bar 10. To allow removing from the table M a sheet F judged to be defective, the lower rollers 1 are retractable so as to drop the sheet down.
  • the downstream end of the bar 10 is mounted in free rotation, around a horizontal axis 17, on a vertical plate 16e by means of a pin 16g serving as a support; the upstream end is fixed to an intermediate block 16a, itself mounted in free rotation on a thick vertical block 167.
  • a first pair of bevel wheels, mounted inside the intermediate block 16a, (shown in broken lines) and a second pair mounted in the vertical block 167 make it possible, from a transverse square bar 70 of movement transmission which is engaged with a bevel wheel of the second pair, the rotation drive of the pulley 14, as well as the tilting of all the lower rollers 1 around the axis 17.
  • the square bar 70 is rotated at one end (by means not shown).
  • the pivoting of the side bar 10 around the axis 17 is achieved by means of a set of rods 18a, 18b and a jack V1 located below the side bar 10.
  • each upper roller 2 is mounted (see fig. 5) on a first support with four flanges which form in pairs two stirrups 20a, 20b opposite and perpendicular to each other. Between the flanges of the first bracket 20a, is mounted an upper roller 2 of so that its axis of rotation is essentially perpendicular to the scroll.
  • An intermediate support 21 enters through a free end inside the second stirrup 20b.
  • the first support 20 is pivotally mounted on the auxiliary support 21 using a vertical pin 22 located in the central part between each stirrup 20a, 20b.
  • the auxiliary support 21 is provided with a hollow cylindrical part 21a fixed and centered at the end of a cylindrical support 25 pivotally mounted, about its horizontal axis, on a side plate 200 extending over the entire length of the margin table M.
  • a vertical rod 23 connects each flange of the second stirrup 20b. Against this rod 23 abuts the outlet end 24 of a pneumatic cylinder V2 provided inside and on the axis of the pivoting support 25.
  • the function of the cylinder V2 is to exert a certain force on the rod 23 of so as to rotate the double stirrup 20 around the axis 22 and thus put the upper roller 2, against the force exerted on it by the sheet which runs, slightly at an angle with respect to the running direction.
  • the control of the jack V2 is carried out so that the roller 2 becomes again parallel to the scrolling when the force exerted by the sheet F is above a certain force, which is the case when the sheet F abuts against the lateral jogging rule 100 and that its direction of travel no longer has a transverse component.
  • a screw 26 fixed on the auxiliary support 21 and against which the rod 23 abuts in order to limit the pivoting of the stirrup 20 in the direction of the roller 2 whose position is in bias.
  • a lever 27 composed of a central part fixed in rotation on the pivoting support 25 and extended both by a vertical arm 27a and a horizontal arm 27b, provided each at its free end of a roller 28a, respectively 28b, serves to control the degree of pivoting of the support 25.
  • the roller 28b of the horizontal lever 27b abuts against an inclined surface of a stop 29 fixed on a movable side bar 29a on which are mounted all the stops 29 of the same group of upper rollers 2.
  • By longitudinal displacement of the bar 29a it is possible, thanks to the inclined surface of the stops 29, to adjust the working position of the upper rollers in height. 2, that is to say the position in which they must press the sheet F against the lower rollers 1.
  • the displacement of the bar 29a is obtained by means of a motor M2 driving a screw 29c engaged with a corresponding thread a bracket 99 fixed below the bar 29a.
  • On the other roller 28a can act the outlet end of a pneumatic cylinder V3 which forces the lever 27 to pivot in a direction which keeps the roller 28b in contact with the stop 29.
  • the cylinder V3 is successively actuated, as soon as the downstream edge of a sheet has entered between the two rollers 1, 2 of the same pair P1 - P3, and put out of action, or when the upstream edge has left the two rollers 1, 2, in sight to facilitate penetration of the front edge of the next sheet, either when the sheet has been gripped by a gripper bar or the rollers 93 and 94 of the device of FIG. 4 described below.
  • a spring 28c holds the roller 28a against the outlet rod of the jack V3.
  • each upper roller is provided with small grooves 2b of elasticity, cooling and wear control, and also with a semi-circular radial groove 2a intended to engage with an endless round belt of drive (not shown) connected to a corresponding auxiliary pulley 50 located nearby.
  • the arrangement of each upper roller 2 and its auxiliary pulley 50 is such that the belt can fulfill its driving function without being hampered by the slight biased positioning of the roller 2.
  • the auxiliary pulley 50 is mounted keyed on the first end of '' a shaft mounted in free rotation on a side plate 300 of the margin table M, on the other end being keyed a toothed pulley 51 engaged with an endless belt (not shown) common to all the upper rollers 2 d 'A single group and driven in movement by a pulley 52 driven in rotation by the transmission shaft 70.
  • each downstream support 16e is transversely displaceable using rollers 181 bearing on a rail 168 of the machine, and each upstream vertical block 167 using a roller 184 bearing on a rail 186.
  • the two side plates 200, 300 are interconnected by horizontal spacers 201.
  • the upper roller 2 located at the upstream end is rotated by an endless belt connected to a pulley 50a mounted on the above the transmission shaft 70 and driven by the latter by means of a pair of gears contained in the vertical block 167 (FIG. 1 in dotted lines).
  • the width of the margin table M is adjusted by means of a screw 188 acting on each vertical block 167.
  • the lateral jogging device comprises a first group of three pairs P1 - P3 of rollers 1, 2 located on the driver side, and a second group located on the side opposite the driver. That has proved useful in order to be able to carry out the jogging of the sheet F with respect to a rule 100 located either on one or the other side, as required. It is clear that if the jogging is carried out according to a rule 100 located on the side opposite the conductor, the upper rollers 2 of the pairs P1 - P3 located on the driver's side are continuously maintained in the rest position. It is therefore also possible in principle to provide only one group of pairs P1 - P3 of rolls 1, 2 distributed only along one side over the entire maximum working format length.
  • the front jogging device shown in FIG. 4 is located directly following that of the side jogging described above, that is to say that the sheet F comes out of the side jogging device and, simultaneously, enters a passage 80, constituted by two lower guide 81 and upper 82 guide plates, of the front jogging device.
  • the front jogging is carried out by means of two mobile cleats 9 each mounted on an endless toothed belt 90.
  • the two mobile cleats 9 are transversely offset. Thereafter, only one cleat 9 will be described, since the other cleat is identical to it.
  • the toothed belt 90 describes a closed loop with return from the top and the going from the bottom is parallel to the passage 80.
  • the belt 90 is guided upstream, that is to say at the entrance of the sheet F, by a pair of pulleys lower 90a and upper 90b, and downstream by another pair of pulleys lower 90c and upper 90d.
  • the upper downstream pulley 90a is used to drive the belt 90.
  • the two belts 90 are of course driven at the same speed.
  • a tensioner 900 is provided for the upper upstream pulley 90b.
  • the stopper 9 is provided with a bearing face 9a against which the front edge of each sheet F will abut when it is pushed forward, at a speed v1 , by the rollers 1, 2 of the anterior lateral jogging device.
  • the speed v1 is greater than that v2 of the movement of the movable cleat 9 (or of the strip 90).
  • the dimensions and speeds v1, v2 of the assembly are chosen so that each time the sheet F is jogged, the cleat 9 enters at speed v2 first in the passage 80, then followed by the sheet F whose front edge will come up against the rear face 9a of the cleat since v1> v2.
  • a displacement at a speed v2 is coaxially associated with a drive roller 93, the peripheral speed of which is equal to v2 and which, in collaboration with a pressure roller 94, located below the sheet F, drives the sheet out of the front jogging device and towards, for example, a station d printing, station with respect to which it is easy to know exactly the longitudinal position of the movable cleat 9 with reference to the rollers 93, 94.
  • the pressure roller 94 is mounted on a balance so as to be able to adjust the distance between the two rollers 93, 94 depending on the thickness of the sheet F.

Abstract

A device for correcting lateral alignment of a workpiece removed from a pile of workpiece prior to being fed into a processing machine. The device includes at least two pairs of rollers spaced along the direction of movement of the sheet, with each pair of rollers including a driven lower roller and a driven upper roller, with the upper roller having its axis forming a slight angle with the axis of the lower roller to provide a lateral force to move the workpiece against a lateral guide. The device can be used in the second arrangement providing front stops for aligning the front or leading edge of the workpiece after the lateral position alignment has been accomplished.

Description

La présente invention concerne un dispositif de taquage d'éléments en forme de plaque ou feuilles, utilisé dans une station d'introduction d'une machine de travail de tels éléments en vue de la production d'emballages, tel que défini dans le préambule de la revendication 1.The present invention relates to a device for jogging elements in the form of plates or sheets, used in a station for introducing a machine for working such elements for the production of packaging, as defined in the preamble of claim 1.

Dans les machines d'impression ou découpage de feuilles de carton, ces dernières sont généralement amenées par piles placées successivement dans la station d'introduction. Chaque pile n'est souvent ni rigoureusement verticale ni exactement centrée sur l'axe de la machine. C'est pourquoi, chaque feuille de carton, après séparation successive de la pile par le haut ou par le bas, est introduite individuellement dans un dispositif de taquage latéral et frontal en vue de son positionnement exact par rapport :

  • soit à des barres à pinces montées sur un train de chaînes et destinées à transporter chaque feuille au travers de stations de découpage et d'éjection de déchets qui suivent;
  • soit à des rouleaux d'entrée d'une station d'impression, par exemple par flexographie.
In machines for printing or cutting cardboard sheets, the latter are generally brought in by piles placed successively in the insertion station. Each pile is often neither strictly vertical nor exactly centered on the axis of the machine. This is why, each sheet of cardboard, after successive separation of the stack from the top or from the bottom, is introduced individually into a lateral and front jogging device with a view to its exact positioning with respect to:
  • either to gripper bars mounted on a chain of chains and intended to transport each sheet through cutting and ejecting waste stations which follow;
  • or to input rollers of a printing station, for example by flexography.

Dans, ce but, de telles machines comprennent généralement une station d'introduction avec table de marge munie d'un passage dont la longueur, dans le sens de défilement des feuilles, est au moins égale à celle du format maximum des feuilles à travailler. Une fois qu'une feuille se trouve sur la table de marge, elle est stoppée par des taquets de marge frontaux. Ensuite, une paire de galets ou rouleaux inférieur et supérieur pince un bord de la feuille et, par rotation, la tire latéralement contre une règle latérale de taquage. L'axe de rotation des deux galets est orienté essentiellement perpendiculairement à la direction de défilement des feuilles. Il est à noter que le rouleau inférieur, entraîné en rotation, est maintenu dans un plan horizontal fixe, alors que le galet supérieur, libre en rotation, peut occuper une première position dans laquelle il n'est pas en contact de pression avec la feuille et une seconde position dans laquelle il presse la feuille en direction du rouleau inférieur.For this purpose, such machines generally comprise an introduction station with a margin table provided with a passage the length of which, in the direction of travel of the sheets, is at least equal to that of the maximum format of the sheets to be worked. Once a sheet is on the margin table, it is stopped by front margin tabs. Then a pair of rollers or rollers lower and upper pinches an edge of the sheet and, by rotation, pulls it laterally against a lateral jogging rule. The axis of rotation of the two rollers is oriented essentially perpendicular to the direction of travel of the sheets. It should be noted that the lower roller, driven in rotation, is held in a fixed horizontal plane, while the upper roller, free in rotation, can occupy a first position in which it is not in pressure contact with the sheet. and a second position in which it presses the sheet in the direction of the lower roller.

Toutefois, le rouleau supérieur, d'une part, présente une usure prématurée puisque, vulcanisé, il n'est pas entraîné et, d'autre part, a une tendance à labourer la feuille lors du premier contact lorsque le rouleau est à l'arrêt. Il est à remarquer que dans ce cas la feuille est généralement poussée par l'arrière à l'aide de moyens auxiliaires.However, the upper roller, on the one hand, has premature wear since, vulcanized, it is not entrained and, on the other hand, has a tendency to plow the sheet at the first contact when the roller is at stop. It should be noted that in this case the sheet is generally pushed from behind using auxiliary means.

L'inconvénient majeur d'un tel dispositif de taquage latéral et frontal est qu'il nécessite un arrêt complet de la feuille. Cet arrêt de la feuille, et ensuite sa mise en route, d'une part, nécessitent des moyens de commande relativement compliqués et, d'autre part, sont difficilement conciliables avec les cadences actuelles de production toujours plus élevées puisqu'un tel arrêt augmente nécessairement la durée du cycle nécessaire à l'opération de marge.The major drawback of such a lateral and frontal jogging device is that it requires a complete stop of the sheet. This stopping of the sheet, and then its start-up, on the one hand, require relatively complicated control means and, on the other hand, are difficult to reconcile with the current ever higher production rates since such stopping increases necessarily the duration of the cycle necessary for the margin operation.

De plus, il est déjà connu de réaliser en continu le taquage d'une feuille qui défile à l'aide d'une paire de rouleaux dont les rouleaux inférieur et supérieur sont entraînés en rotation et sont placés légérement de biais par rapport à la direction de défilement. Un tel dipositif, qui correspond au préambule de la revendication 1, est décrit dans le brevet US-A-2,674,456. De plus, les dispositifs de taquage connus jusqu'à ce jour ont l'inconvénient d'exiger de prévoir deux lignes de référence sur la feuille, l'une sur le bord arrière pour la prise des barres à pinces dans les stations de découpage, refoulage et/ou gaufrage, et l'autre sur le bord avant pour l'impression par rouleaux, ce qui exige une inversion de 180° de la feuille lors du passage d'une station d'impression à une station de découpage.In addition, it is already known to continuously perform the jogging of a sheet which passes by means of a pair of rollers, the lower and upper rollers of which are driven in rotation and are placed slightly at an angle to the direction. scroll. Such a device, which corresponds to the preamble of claim 1, is described in patent US-A-2,674,456. In addition, the jogging devices known to date have the drawback of requiring the provision of two reference lines on the sheet, one on the rear edge for gripping the gripper bars in the cutting stations, upsetting and / or embossing, and the other on the front edge for printing by rolls, which requires a 180 ° inversion of the sheet when passing from a printing station to a cutting station.

La présente invention a donc pour but d'éliminer les inconvénients mentionnés ci-dessus. Ce but est atteint grâce à un dispositif de taquage selon la revendication 1.The present invention therefore aims to eliminate the drawbacks mentioned above. This object is achieved by means of a jogging device according to claim 1.

Il sera maintenant décrit un mode de réalisation de l'invention en référence au dessin annexé dans lequel :

  • la figure 1 représente une vue en coupe longitudinale d'un dispositif de taquage latéral;
  • la figure 2 représente une vue de dessus de la figure 1;
  • la figure 3 représente une vue en coupe transversale selon B - B de la figure 1;
  • la figure 4 représente une vue en coupe longitudinale d'un dispositif de taquage frontal; et
  • la figure 5 représente une vue en détail d'un rouleau de taquage monté sur un support pivotant.
An embodiment of the invention will now be described with reference to the accompanying drawing in which:
  • FIG. 1 represents a view in longitudinal section of a lateral jogging device;
  • Figure 2 shows a top view of Figure 1;
  • 3 shows a cross-sectional view along B - B of Figure 1;
  • FIG. 4 represents a view in longitudinal section of a front jogging device; and
  • FIG. 5 represents a detailed view of a jogging roller mounted on a pivoting support.

La figure 1 montre un paquet de feuilles F dont la dernière inférieure est prise par une table aspirante Ta pour être transférée entre deux grands rouleaux R1, R2 destinés, sitôt que la table Ta a relâché la feuille F, à tirer celle-ci hors du fond du paquet pour l'introduire dans le passage longitudinal d'une table de marge M. Ce passage est délimité par six paires P1 - P3 de rouleaux inférieur 1 et supérieur 2. Chaque rouleau inférieur 1 est situé au-dessous du passage de la feuille, chaque rouleau supérieur au-dessus. Les six paires P1 - P3 sont réparties en deux groupes dont l'un est situé du côté latéral conducteur, et l'autre du côté latéral opposé conducteur. Les 3 paires P1 - P3 de chaque groupe sont réparties sur toute la longueur de la table, c'est-à-dire qu'une première paire P1 se trouve à l'amont (relativement au sens de défilement de la feuille F), la deuxième P2 au milieu et la troisième à l'aval. La longueur de la table de marge M est au moins égale à celle du format maximum de feuilles à travailler.FIG. 1 shows a packet of sheets F, the last lower of which is taken by a suction table Ta to be transferred between two large rollers R1, R2 intended, as soon as the table Ta has released the sheet F, to pull the latter out of the bottom of the packet to introduce it into the longitudinal passage of a margin table M. This passage is delimited by six pairs P1 - P3 of lower rollers 1 and upper 2. Each lower roll 1 is located below the passage of the sheet, each top roll above. The six pairs P1 - P3 are divided into two groups, one of which is located on the lateral side conductor, and the other on the opposite driver side. The 3 pairs P1 - P3 of each group are distributed over the entire length of the table, that is to say that a first pair P1 is located upstream (relative to the direction of travel of the sheet F), the second P2 in the middle and the third downstream. The length of the margin table M is at least equal to that of the maximum format of sheets to be worked.

Pour faciliter la compréhension, dans la figure 2, seuls les rouleaux inférieurs 1 sont représentés sur la gauche; sur la droite, seuls sont représentés les rouleaux supérieurs 2.To facilitate understanding, in Figure 2, only the lower rollers 1 are shown on the left; on the right, only the upper rollers 2 are shown.

Les rouleaux inférieurs 1, en acier lisse, sont destinés à supporter et transporter la feuille F. Tous les rouleaux inférieurs 1 d'un même groupe, montés en rotation sur une barre latérale 10 (figure 2) sont prolongés du côté libre par un bout d'arbre 11 sur lequel est montée claveté une poulie crantée 12 en prise avec une courroie crantée 13 entraînée en mouvement par une poulie crantée 14 prévue à l'extrémité amont de la barre latérale 10. Pour permettre d'enlever de la table M une feuille F jugée défectueuse, les rouleaux inférieurs 1 sont escamotables de manière à laisser tomber la feuille vers le bas. Dans ce but, l'extrémité aval de la barre 10 est montée en rotation libre, autour d'un axe horizontal 17, sur une plaque verticale 16e au moyen d'un tourillon 16g servant de support; l'extrémité amont est fixée à un bloc intermédiaire 16a, lui-même monté en rotation libre sur un épais bloc vertical 167. Une première paire de roues coniques, montée à l'intérieur du bloc intermédiaire 16a, (représentées en traits discontinus) et une seconde paire montée dans le bloc vertical 167 permettent, à partir d'une barre carré transversale 70 de transmission de mouvement qui est en prise avec une roue conique de la seconde paire, l'entraînement en rotation de la poulie 14, de même que le basculement de tous les rouleaux inférieurs 1 autour de l'axe 17. La barre carrée 70 est entraînée en rotation à une extrémité (par des moyens non représentés).The lower rollers 1, made of smooth steel, are intended to support and transport the sheet F. All the lower rollers 1 of the same group, mounted in rotation on a side bar 10 (FIG. 2) are extended on the free side by a tip shaft 11 on which is keyed a toothed pulley 12 engaged with a toothed belt 13 driven in motion by a toothed pulley 14 provided at the upstream end of the side bar 10. To allow removing from the table M a sheet F judged to be defective, the lower rollers 1 are retractable so as to drop the sheet down. For this purpose, the downstream end of the bar 10 is mounted in free rotation, around a horizontal axis 17, on a vertical plate 16e by means of a pin 16g serving as a support; the upstream end is fixed to an intermediate block 16a, itself mounted in free rotation on a thick vertical block 167. A first pair of bevel wheels, mounted inside the intermediate block 16a, (shown in broken lines) and a second pair mounted in the vertical block 167 make it possible, from a transverse square bar 70 of movement transmission which is engaged with a bevel wheel of the second pair, the rotation drive of the pulley 14, as well as the tilting of all the lower rollers 1 around the axis 17. The square bar 70 is rotated at one end (by means not shown).

Le pivotement de la barre latérale 10 autour de l'axe 17 est réalisé au moyen d'un jeu de biellettes 18a, 18b et d'un vérin V1 situés au-dessous de la barre latérale 10.The pivoting of the side bar 10 around the axis 17 is achieved by means of a set of rods 18a, 18b and a jack V1 located below the side bar 10.

Les rouleaux supérieurs 2 ont pour première fonction de contribuer au transport de la feuille F dans le sens de défilement, c'est-à-dire de la presser en direction du rouleau inférieur 1, et une deuxième fonction qui est celle du taquage latéral proprement dit, c'est-à-dire de déplacer la feuille qui défile en direction d'une des deux règles 100 de taquage latéral prévues sur chaque côté de la table M. Il s'est avéré que, pour donner à chaque rouleau supérieur 2 la possibilité de réaliser cette double fonction, il est nécessaire que chacun d'eux :

  • puisse occuper une première position dans laquelle il autorise chaque feuille F à aisément pénétrer entre les deux rouleaux 1, 2 d'une même paire P1 - P3, et une seconde position dans laquelle il pousse la feuille F en direction du rouleau inférieur 1 en vue de son déplacement dans la direction de défilement;
  • soit entraîné en rotation avec une vitesse périphérique égale à celle du rouleau inférieur 1 mais dont la direction peut être soit de biais, c'est-à-dire formant un léger angle de 5° à 10° par rapport à celle du défilement (ou l'axe de la machine), en vue du taquage latéral, soit parallèle à celle du défilement.
The upper rollers 2 have the primary function of contributing to the transport of the sheet F in the direction of travel, that is to say of pressing it in the direction of the lower roller 1, and a second function which is that of the side jogging properly said, that is to say to move the sheet which runs in the direction of one of the two rules 100 for side jogging provided on each side of the table M. It has been found that, to give each upper roller 2 the possibility of realizing this double function, it is necessary that each of them:
  • can occupy a first position in which it allows each sheet F to easily penetrate between the two rollers 1, 2 of the same pair P1 - P3, and a second position in which it pushes the sheet F towards the lower roll 1 in view of its movement in the direction of travel;
  • either driven in rotation with a peripheral speed equal to that of the lower roller 1 but the direction of which may be either at an angle, that is to say forming a slight angle of 5 ° to 10 ° relative to that of the scrolling (or the axis of the machine), for side jogging, is parallel to that of scrolling.

Dans ce but chaque rouleau supérieur 2 est monté (voir fig. 5) sur un premier support à quatre flasques qui forment par paire deux étriers 20a, 20b opposées et perpendiculaires l'un à l'autre. Entre les flasques du premier étrier 20a, est monté un rouleau supérieur 2 de manière que son axe de rotation soit essentiellement perpendiculaire au défilement. Un support intermédiaire 21 pénètre par une extrémité libre à l'intérieur du second étrier 20b. Le premier support 20 est monté en pivotement libre sur le support auxiliaire 21 a l'aide un axe 22 vertical situé dans la partie centrale comprise entre chaque étrier 20a, 20b. Le support auxiliaire 21 est muni d'une partie cylindrique creuse 21a fixée et centrée en bout d'un support cylindrique 25 monté pivotant, autour de son axe horizontal, sur une plaque latérale 200 s'étendant sur toute la longueur de la table de marge M. Une tige 23 verticale relie chaque flasque du second étrier 20b. Contre cette tige 23 vient buter l'extrémité de sortie 24 d'un vérin pneumatique V2 prévu à l'intérieur et sur l'axe du support pivotant 25. Le vérin V2 a pour fonction d'exercer une certaine force sur la tige 23 de manière à faire pivoter le double étrier 20 autour de l'axe 22 et ainsi mettre le rouleau supérieur 2, à l'encontre de la force exercée sur lui par la feuille qui défile, légèrement de biais par rapport au sens de défilement. La commande du vérin V2 est réalisée de manière que le rouleau 2 devienne à nouveau parallèle au défilement lorsque la force exercée par la feuille F est au-dessus d'une certaine force, ce qui est le cas lorsque la feuille F vient buter contre la règle latérale de taquage 100 et que sa direction de défilement n'a plus de composante transversale. En face du piston 24 du vérin V2, est prévu une vis 26 fixée sur le support auxiliaire 21 et contre laquelle vient buter la tige 23 en vue de limiter le pivotement de l'étrier 20 dans le sens du rouleau 2 dont la position est en biais.For this purpose each upper roller 2 is mounted (see fig. 5) on a first support with four flanges which form in pairs two stirrups 20a, 20b opposite and perpendicular to each other. Between the flanges of the first bracket 20a, is mounted an upper roller 2 of so that its axis of rotation is essentially perpendicular to the scroll. An intermediate support 21 enters through a free end inside the second stirrup 20b. The first support 20 is pivotally mounted on the auxiliary support 21 using a vertical pin 22 located in the central part between each stirrup 20a, 20b. The auxiliary support 21 is provided with a hollow cylindrical part 21a fixed and centered at the end of a cylindrical support 25 pivotally mounted, about its horizontal axis, on a side plate 200 extending over the entire length of the margin table M. A vertical rod 23 connects each flange of the second stirrup 20b. Against this rod 23 abuts the outlet end 24 of a pneumatic cylinder V2 provided inside and on the axis of the pivoting support 25. The function of the cylinder V2 is to exert a certain force on the rod 23 of so as to rotate the double stirrup 20 around the axis 22 and thus put the upper roller 2, against the force exerted on it by the sheet which runs, slightly at an angle with respect to the running direction. The control of the jack V2 is carried out so that the roller 2 becomes again parallel to the scrolling when the force exerted by the sheet F is above a certain force, which is the case when the sheet F abuts against the lateral jogging rule 100 and that its direction of travel no longer has a transverse component. Opposite the piston 24 of the jack V2, there is provided a screw 26 fixed on the auxiliary support 21 and against which the rod 23 abuts in order to limit the pivoting of the stirrup 20 in the direction of the roller 2 whose position is in bias.

Un levier 27 composé d'une partie centrale fixée en rotation sur le support pivotant 25 et prolongée à la fois par un bras vertical 27a et un bras horizontal 27b, munis chacun à son extrémité libre d'un galet 28a, respectivement 28b, sert à contrôler le degré de pivotement du support 25. Le galet 28b du levier horizontal 27b vient buter contre une surface inclinée d'une butée 29 fixée sur une barre latérale déplaçable 29a sur laquelle sont montées toutes les butées 29 d'un même groupe de rouleaux supérieurs 2. Par déplacement longitudinal de la barre 29a, il est possible, grâce à la surface inclinée des butées 29, de régler en hauteur la position de travail des rouleaux supérieurs 2, c'est-à-dire la position dans laquelle ils doivent presser la feuille F contre les rouleaux inférieurs 1. Le déplacement de la barre 29a est obtenu au moyen d'un moteur M2 entraînant une vis 29c en prise avec un filetage correspondant d'un équerre 99 fixé au-dessous de la barre 29a. Sur l'autre galet 28a peut agir l'extrémité de sortie d'un vérin pneumatique V3 qui force le levier 27 à pivoter dans un sens qui maintient le galet 28b en contact avec la butée 29. Le vérin V3 est successivement mis en action, sitôt que le bord aval d'une feuille a pénétré entre les deux rouleaux 1, 2 d'une même paire P1 - P3, et mis hors d'action, soit lorsque le bord amont a quitté les deux rouleaux 1, 2, en vue de faciliter la pénétration du bord frontal de la feuille suivante, soit lorsque la feuille a été saisie par une barre de pinces ou les rouleaux 93 et 94 du dispositif de la figure 4 décrit ci-après. Un ressort 28c maintient le galet 28a contre la tige de sortie du vérin V3.A lever 27 composed of a central part fixed in rotation on the pivoting support 25 and extended both by a vertical arm 27a and a horizontal arm 27b, provided each at its free end of a roller 28a, respectively 28b, serves to control the degree of pivoting of the support 25. The roller 28b of the horizontal lever 27b abuts against an inclined surface of a stop 29 fixed on a movable side bar 29a on which are mounted all the stops 29 of the same group of upper rollers 2. By longitudinal displacement of the bar 29a, it is possible, thanks to the inclined surface of the stops 29, to adjust the working position of the upper rollers in height. 2, that is to say the position in which they must press the sheet F against the lower rollers 1. The displacement of the bar 29a is obtained by means of a motor M2 driving a screw 29c engaged with a corresponding thread a bracket 99 fixed below the bar 29a. On the other roller 28a can act the outlet end of a pneumatic cylinder V3 which forces the lever 27 to pivot in a direction which keeps the roller 28b in contact with the stop 29. The cylinder V3 is successively actuated, as soon as the downstream edge of a sheet has entered between the two rollers 1, 2 of the same pair P1 - P3, and put out of action, or when the upstream edge has left the two rollers 1, 2, in sight to facilitate penetration of the front edge of the next sheet, either when the sheet has been gripped by a gripper bar or the rollers 93 and 94 of the device of FIG. 4 described below. A spring 28c holds the roller 28a against the outlet rod of the jack V3.

La périphérie vulcanisé de chaque rouleau supérieur est muni de petites rainures 2b d'élasticité, de refroidissement et de contrôle d'usure, et aussi d'une gorge radiale semi-circulaire 2a destinée à venir en prise avec une courroie ronde sans fin d'entraînement (non représentée) reliée à une poulie auxiliaire correspondante 50 située à proximité. La disposition de chaque rouleau supérieur 2 et de sa poulie auxiliaire 50 est telle que la courroie puisse remplir sa fonction d'entraînement sans être gênée par le léger positionnement en biais du rouleau 2. La poulie auxiliaire 50 est montée clavetée sur la première extrémité d'un arbre monté en rotation libre sur une plaque latérale 300 de la table de marge M, sur l'autre extrémité étant montée clavetée une poulie crantée 51 en prise avec une courroie sans fin (non représentée) commune à tous les rouleaux supérieurs 2 d'un même groupe et entraînée en mouvement par une poulie 52 entraînée en rotation par l'arbre de transmission 70.The vulcanized periphery of each upper roller is provided with small grooves 2b of elasticity, cooling and wear control, and also with a semi-circular radial groove 2a intended to engage with an endless round belt of drive (not shown) connected to a corresponding auxiliary pulley 50 located nearby. The arrangement of each upper roller 2 and its auxiliary pulley 50 is such that the belt can fulfill its driving function without being hampered by the slight biased positioning of the roller 2. The auxiliary pulley 50 is mounted keyed on the first end of '' a shaft mounted in free rotation on a side plate 300 of the margin table M, on the other end being keyed a toothed pulley 51 engaged with an endless belt (not shown) common to all the upper rollers 2 d 'A single group and driven in movement by a pulley 52 driven in rotation by the transmission shaft 70.

L'extrémité aval de chaque plaque 200 est fixée, au moyen de vis 169, au support 16e, alors que l'extrémité amont est fixée au bloc vertical 167. En vue d'adapter la largeur de la table de marge M à celle du format de la feuille F, chaque support aval 16e est transversalement déplaçable à l'aide de galets 181 prenant appui sur un rail 168 de la machine, et chaque bloc vertical amont 167 à l'aide d'un galet 184 prenant appui sur un rail 186. Les deux plaques latérales 200, 300 sont reliées entre elles par des entretoises horizontales 201. Il est à remarquer que le rouleau supérieur 2 situé à l'extrémité amont est entraîné en rotation par une courroie sans fin reliée à une poulie 50a montée au-dessus de l'arbre de transmission 70 et entraînée par celui-ci au moyen d'une paire d'engrenage contenue dans le bloc vertical 167 (figure 1 en pointillé). Le réglage de la largeur de la table de marge M est effectué par l'intermédiaire d'une vis 188 agissant sur chaque bloc vertical 167.The downstream end of each plate 200 is fixed, by means of screws 169, to the support 16e, while the upstream end is fixed to the vertical block 167. In order to adapt the width of the margin table M to that of the format of the sheet F, each downstream support 16e is transversely displaceable using rollers 181 bearing on a rail 168 of the machine, and each upstream vertical block 167 using a roller 184 bearing on a rail 186. The two side plates 200, 300 are interconnected by horizontal spacers 201. It should be noted that the upper roller 2 located at the upstream end is rotated by an endless belt connected to a pulley 50a mounted on the above the transmission shaft 70 and driven by the latter by means of a pair of gears contained in the vertical block 167 (FIG. 1 in dotted lines). The width of the margin table M is adjusted by means of a screw 188 acting on each vertical block 167.

Ci-dessus, il a été décrit que le dispositif de taquage latéral comprend un premier groupe de trois paires P1 - P3 de rouleaux 1, 2 situé du côté conducteur, et un second groupe situé du côté opposé au conducteur. Cela s'est avéré utile pour pouvoir réaliser le taquage de la feuille F par rapport à une règle 100 située aussi bien sur l'un ou l'autre côté, suivant les besoins. Il est clair que si le taquage est effectué selon une règle 100 située du côté opposé au conducteur, les rouleaux supérieurs 2 des paires P1 - P3 situées du côté conducteur sont maintenus continuellement en position de repos. Aussi est-il également possible en principe de ne prévoir qu'un seul groupe de paires P1 - P3 de rouleaux 1, 2 réparties seulement le long d'un seul côté sur toute la longueur maximale de format de travail.Above, it has been described that the lateral jogging device comprises a first group of three pairs P1 - P3 of rollers 1, 2 located on the driver side, and a second group located on the side opposite the driver. That has proved useful in order to be able to carry out the jogging of the sheet F with respect to a rule 100 located either on one or the other side, as required. It is clear that if the jogging is carried out according to a rule 100 located on the side opposite the conductor, the upper rollers 2 of the pairs P1 - P3 located on the driver's side are continuously maintained in the rest position. It is therefore also possible in principle to provide only one group of pairs P1 - P3 of rolls 1, 2 distributed only along one side over the entire maximum working format length.

Le dispositif de taquage frontal montré dans la figure 4 est situé directement à la suite de celui de taquage latéral décrit ci-dessus, c'est-à-dire que la feuille F sort du dispositif de taquage latéral et, simultanément, pénètre dans un passage 80, constitué par deux tôles de guidage inférieure 81 et supérieure 82, du dispositif de taquage frontal.The front jogging device shown in FIG. 4 is located directly following that of the side jogging described above, that is to say that the sheet F comes out of the side jogging device and, simultaneously, enters a passage 80, constituted by two lower guide 81 and upper 82 guide plates, of the front jogging device.

Le taquage frontal est réalisé au moyen de deux taquets mobiles 9 monté chacun sur une courroie crantée sans fin 90. Les deux taquets mobiles 9 sont transversalement décalés. Par la suite, un seul taquet 9 sera décrit, étant donné que l'autre taquet lui est identique.The front jogging is carried out by means of two mobile cleats 9 each mounted on an endless toothed belt 90. The two mobile cleats 9 are transversely offset. Thereafter, only one cleat 9 will be described, since the other cleat is identical to it.

La courroie crantée 90 décrit une boucle fermée à retour par le haut et dont l'aller par le bas est parallèle au passage 80. La courroie 90 est guidée à l'amont, c'est-à-dire à l'entrée de la feuille F, par une paire de poulies inférieure 90a et supérieure 90b, et à l'aval par une autre paire de poulies inférieure 90c et supérieure 90d. La poulie aval supérieure 90a sert à l'entraînement de la courroie 90. Les deux courroies 90 sont bien sûr entraînées à la même vitesse. Pour la poulie amont supérieure 90b est prévu un tendeur 900.The toothed belt 90 describes a closed loop with return from the top and the going from the bottom is parallel to the passage 80. The belt 90 is guided upstream, that is to say at the entrance of the sheet F, by a pair of pulleys lower 90a and upper 90b, and downstream by another pair of pulleys lower 90c and upper 90d. The upper downstream pulley 90a is used to drive the belt 90. The two belts 90 are of course driven at the same speed. A tensioner 900 is provided for the upper upstream pulley 90b.

Il est prévu un seul taquet 9 sur chaque courroie 90. Le taquet 9 est muni d'une face d'appui 9a contre laquelle viendra buter le bord frontal de chaque feuille F lorsqu'elle est poussée vers l'avant, à une vitesse v1, par les rouleaux 1, 2 du dispositif antérieur de taquage latéral. La vitesse v1 est supérieure à celle v2 du déplacement du taquet mobile 9 (ou de la bande 90). Autrement dit, les dimensions et vitesses v1, v2 de l'ensemble sont choisies pour qu'à chaque taquage de feuille F, le taquet 9 pénètre à vitesse v2 en premier dans le passage 80, suivi ensuite par la feuille F dont le bord frontal viendra buter contre la face arrière 9a du taquet puisque v1 > v2.There is only one stopper 9 on each belt 90. The stopper 9 is provided with a bearing face 9a against which the front edge of each sheet F will abut when it is pushed forward, at a speed v1 , by the rollers 1, 2 of the anterior lateral jogging device. The speed v1 is greater than that v2 of the movement of the movable cleat 9 (or of the strip 90). In other words, the dimensions and speeds v1, v2 of the assembly are chosen so that each time the sheet F is jogged, the cleat 9 enters at speed v2 first in the passage 80, then followed by the sheet F whose front edge will come up against the rear face 9a of the cleat since v1> v2.

En vue d'assurer à la feuille F, lorsque le taquet 9 quitte le bord frontal de la feuille F au niveau de la poulie avant inférieure 90a, un déplacement à une vitesse v2, à ladite poulie 90c est coaxialement associé un rouleau d'entraînement 93 dont la vitesse périphérique est égale à v2 et qui, en collaboration avec un rouleau presseur 94, situé au-dessous de la feuille F, entraîne la feuille hors du dispositif de taquage frontal et en direction, par exemple, d'une station d'impression, station par rapport à laquelle il est aisé de connaître exactement la position longitudinale du taquet mobile 9 par référence aux rouleaux 93, 94. Le rouleau presseur 94 est monté sur un balancier pour pouvoir régler la distance entre les deux rouleaux 93, 94 en fonction de l'épaisseur de la feuille F.In order to ensure the sheet F, when the cleat 9 leaves the front edge of the sheet F at the level of the lower front pulley 90a, a displacement at a speed v2, with said pulley 90c is coaxially associated with a drive roller 93, the peripheral speed of which is equal to v2 and which, in collaboration with a pressure roller 94, located below the sheet F, drives the sheet out of the front jogging device and towards, for example, a station d printing, station with respect to which it is easy to know exactly the longitudinal position of the movable cleat 9 with reference to the rollers 93, 94. The pressure roller 94 is mounted on a balance so as to be able to adjust the distance between the two rollers 93, 94 depending on the thickness of the sheet F.

Claims (6)

  1. Device for jogging plate or sheet-shaped workpieces and designed for an infeed station of a processing, ie cutting, die-cutting, embossing, printing and similar, package producing machine, comprising:
    - a feeder table (M) provided with a horizontal passage allowing the sheet (F) to travel through one by one, the length of which in the travelling direction covers a distance at least equal to the length of the maximum processing size;
    - at least two pairs (P1 - P3) consisting each of a lower and an upper roller (1 and 2 respectively) for lateral jogging, one of which (1) is situated underneath the passage and is serving as a support for the sheet (F), and the other one (2) situated on top of the passage can take up a first, rest position, without pressure contact with the sheet, as well as a second position in which it pushes the sheets towards the lower roller (1), the axis of rotation of each pair (P1 - P3) of the rollers (1, 2) being arranged so that with the lower roller (2) being driven, the sheet (F) will be shifted in a direction essentially perpendicular to the travelling direction in such a way that the lateral edge of the sheet (F) will be guided by a lateral jogging ruler (100) foreseen for the feeder table (M), the pairs (P1 - P3) of the rollers (1, 2) are arranged throughout the length of the feeder table (M) and the upper rollers (2) being driven with a peripheral motion identical to the one of the lower rollers (1) so that the sheet (F) will be conveyed in the travelling direction;
       characterized by the fact that:
    - the rotary drive of the lower rollers (1) is such that the direction of their peripheral motion is essentially parallel to the travelling direction of the sheet (F) for its continuous conveyance throughout the lateral jogging operation;
    - each upper roller (2) has an individual arrangement with regard to the other rollers, which arrangement can be such that, in a first position, its peripheral motion is slightly oblique, forming an angle of about 5° to 10° with the travelling direction, and, in a second position, the said motion is essentially parallel to the sheet travelling direction;
    - elastic means (V2) are foreseen for individually moving each upper roller (2) from the said parallel arrangement with regard to the travelling direction to the said oblique arangement against the resistance opposed by the travelling sheet (F).
    - control means (V3) are foreseen for individually moving each upper roller (2) either from the said second operative position to the said first rest position when the front edge of the sheet (F) approaches the corresponding roller pairs (P1 - P3), or from the said first rest position to the said second operative position as soon as the said front edge has run in between the said roller pair.
  2. Device according to claim 1, characterized by the fact that the said pairs (P1 - P3) of the rollers (1, 2) are subdivided into two assemblies of which one is situated on the operator's side and the other opposite the operator's side, all lower rollers (1) of one and the same assembly being fitted on a lateral bar (10) pivotable on a horizontal axle so that the lower rollers (1) can take up a first position in which they will act as supporting and conveying means for the sheet (F), and a second position in which their purpose is to release a deficient sheet (F) from the feeder table (M).
  3. Device according to claim 2, characterized by the fact that each assembly of pairs (P1 - P3) of the rollers (1, 2) is fitted on a support (10, 200) which is crosswise shiftable so that the width of the feeder table (M) can be adapted to the sheet size.
  4. Device according to one of the aforesaid claims, caracterised by the fact that the sheet (F) leaving the feeder table (M) will simultaneously run into a front jogging device depending on a speed (v1), ie owing the action of at least one pair (P1 - P3) of the rollers on the feeder table M, comprising:
    - a horizontal passage (80) situated in the extension proper of the passage existing between the lower rollers (1) and the upper rollers (2) of the feeder table (M),
    - at least one movable front lay (9) carried by a belt (90), a chain or similar describing a closed loop of which a part is parallel to the horizontal passage (80), the speed (v2) of the movable front lay (9) and, hence of the belt (90), being slower than the sheet speed (v1) at the inlet of the front jogging device so as to have the front edge of the sheet (F) stop against a front side (9a) of the lay (9).
  5. Device according to claim 4, characterized by the fact that the front jogging device includes two movable front lays (9) each fitted on a belt (90) describing a closed loop with the return track on top and the forward track, underneath, parallel to the passage (80), the belt (90) being guided downstream by a return pulley (90c) to which a roller and an upper pulley (90d) are coaxially associated and driving the belt (90) of the driving device (93) the peripheral speed of which is equal to the one (v2) of the front lay (9) or of the belt (90) and which, acting jointly with a pressure roller (94) situated underneath the sheet (F), is to move the latter out of the front jogging device.
  6. Device according to one of the aforesaid claims, characterized by the fact that every upper roller (2) of the feeder table (M) is fitted on a first support (20) with four flanges which, pairwise, form two straps (20a, 20b) in opposite and perpendicular position with regard to one another, that between the vertical flanges of the first straps (20a), an upper roller (2) is fitted in such a way that its axis of rotation is essentially perpendicular to the travelling board, that an intermediary support (21) penetrates through an open end into the space between the two horizontal flanges of the second strap (20b), that a first support (20) is fitted for free pivoting on the auxiliary support (21) according to a vertical axle (22) situated in the central part contained between the straps (20a, 20b), that the auxiliary support (21) is provided with a hollow cylindrical part (21a) fitted and centered at the end of a cylindrical support (25) fitted for pivoting around its horizontal axle on the feeder table (M) against a rod (23) connecting the flanges of the second strap (20b) and against which will act the outlet end (24) of a first jack (V2) to be located inside and on the axle of the pivoting cylindrical support (25), the first jack (V2) having for purpose to hold elastically the said oblique position of the roller (2), and that the cylindrical support (25) is provided with two radial arms (27a, 27b) spaced angularly, at the end of which will act an arresting piece (29) and a second jack (V3) in order to ensure the positioning of the upper roller (2) with regard to the corresponding lower roller (1).
EP91106311A 1990-04-25 1991-04-19 Device for jogging sheets Expired - Lifetime EP0453984B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1406/90A CH682999A5 (en) 1990-04-25 1990-04-25 The aligning device for an infeed station of work machine, such as cutting or printing, plate members or sheets for the production of packaging.
CH1406/90 1990-04-25

Publications (3)

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EP0453984A2 EP0453984A2 (en) 1991-10-30
EP0453984A3 EP0453984A3 (en) 1993-01-13
EP0453984B1 true EP0453984B1 (en) 1994-10-05

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EP91106311A Expired - Lifetime EP0453984B1 (en) 1990-04-25 1991-04-19 Device for jogging sheets

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JP (1) JP2602585B2 (en)
AT (1) ATE112534T1 (en)
CA (1) CA2041165C (en)
CH (1) CH682999A5 (en)
DE (1) DE69104406T2 (en)
DK (1) DK0453984T3 (en)
ES (1) ES2062601T3 (en)

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Publication number Publication date
EP0453984A3 (en) 1993-01-13
DK0453984T3 (en) 1995-04-03
JPH04226333A (en) 1992-08-17
JP2602585B2 (en) 1997-04-23
US5123640A (en) 1992-06-23
ES2062601T3 (en) 1994-12-16
ATE112534T1 (en) 1994-10-15
CA2041165C (en) 1994-10-11
CH682999A5 (en) 1993-12-31
DE69104406D1 (en) 1994-11-10
CA2041165A1 (en) 1991-10-26
DE69104406T2 (en) 1995-02-16
EP0453984A2 (en) 1991-10-30

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