EP1222113A1 - Device for distributing tablets or equivalents thereof in moving honeycomb-structured sheets in a conditioning plant - Google Patents

Device for distributing tablets or equivalents thereof in moving honeycomb-structured sheets in a conditioning plant

Info

Publication number
EP1222113A1
EP1222113A1 EP00969638A EP00969638A EP1222113A1 EP 1222113 A1 EP1222113 A1 EP 1222113A1 EP 00969638 A EP00969638 A EP 00969638A EP 00969638 A EP00969638 A EP 00969638A EP 1222113 A1 EP1222113 A1 EP 1222113A1
Authority
EP
European Patent Office
Prior art keywords
brush
section
brushes
rotation
tablets
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.)
Granted
Application number
EP00969638A
Other languages
German (de)
French (fr)
Other versions
EP1222113B1 (en
Inventor
Denis Gauthier
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.)
Entreprise de Mechanique et d'Outillage
Original Assignee
Entreprise de Mechanique et d'Outillage
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 Entreprise de Mechanique et d'Outillage filed Critical Entreprise de Mechanique et d'Outillage
Publication of EP1222113A1 publication Critical patent/EP1222113A1/en
Application granted granted Critical
Publication of EP1222113B1 publication Critical patent/EP1222113B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B35/00Supplying, feeding, arranging or orientating articles to be packaged

Definitions

  • the invention relates to an installation for packaging tablets in alveolate sheets in movement, and for example in the blisters of thermoformed wafers in a sheet of synthetic material and receiving at another station a closure film. It relates more particularly to the devices ensuring the distribution of the tablets over the width of the blister sheet in movement. Such devices are arranged downstream of a temporary storage tank for the tablets to be dispensed, a distribution hopper and means delivering the tablets in waves so that they form a heap over the entire width of the blister sheet. in scrolling, downstream of at least one rotary cylindrical brush, the axis of rotation of which is transverse to the direction of travel of the sheet.
  • the brush is unique and associated with other distribution means arranged downstream of it or is associated with several identical brushes arranged downstream of it, for example as described in the French patent application FR-A -2,785,866.
  • the brush or brushes are rotated so that their lower part adjoining the blister sheet moves in direction opposite to that of moving this sheet.
  • the bristles or strands 5 of the brush come in contact with the products 6 to be distributed in the cells 7.
  • these strands 5 are braced on some of the products in the pile, as shown in 5a, by exerting on them a localized and temporary stress ceasing as soon as the strand deforms or changes position by relative movement between the brush and the pile of products.
  • the multiplication of these braces in the same period of time slows down the movement of the blister sheet, placed on the conveyor belt, and can cause the sheet to slide relative to the belt. of the conveyor, the offset of the cells of this sheet relative to the position assigned to them, which can cause disturbances and faults at the next work station of the packaging installation.
  • the localized stress exerted by the bristles of the brushes on them can reach values sufficient to fragment them or at least to detach a piece of them, that is to say to generate breakages or splinters and dust.
  • the dust deteriorates the mechanisms of the device, and by being distributed in the cells, degrades the aesthetic appearance of the packaging.
  • the presentation of the packaging can also be damaged by chipped tablets due to loss of shine.
  • the dust formed accumulates on all sides of the device and requires, at the end of work, a thorough cleaning of each element of the device, for example, when it is a question of using it to dispense tablets having another composition.
  • each brush is composed of tubular brush sections mounted on a common cylindrical shaft, each brush section being, on the one hand, connected to the means for driving the brush in rotation. with the interposition of a torque limiter tolerating the pivoting of the section on the shaft beyond an adjustable value of the resistive torque stressing this section and, on the other hand, associated with a means limiting its rotation relative to the tree.
  • each brush section has a degree of freedom in rotation which, when one of its strands arches on a tablet, allows it to reduce the resistance on the brush and the stress on the tablet and to eliminate the consequences of this bracing on the tablets and on the displacement of the blister sheet.
  • the torque limiter associated with each section comprises, on the one hand, two axial support rings constituting drive members in rotation by friction and coming to bear, on one side, against a face diametral of the section, and on the other side, against a diametrical face of the juxtaposed section, or against a bearing face for the end rings, and, on the other hand, means for adjusting the value of the trigger threshold of the limiter by modifying the axial plating force exerted on one of the end rings, by the sections on the intermediate rings and by the other end ring on the diametrical face of a member linked in rotation to motor means.
  • each section is associated with a torque limiter, the setting of the triggering threshold of which is ensured by modification of the plating force exerted between rings and sections. This adjustment is carried out from one of the ends of the brush, and can be carried out in operation.
  • the means of adjusting the torque limiter comprise, in a bearing supporting the rotation guide bearing of the shaft carrying the brush sections, a threaded sleeve which is screwed into the bearing and is supported by the 'Intermediate of the aforementioned bearing, on an adjustment ring, said ring being in abutment on one of the extreme rings of the stack ring-brush section.
  • each brush section is constituted by a sleeve made of composite material having a mass less than a metal sleeve of the same dimension.
  • This characteristic makes it possible to reduce the inertia of each section and consequently, the value of the kinetic force which can be transmitted to a tablet during the bracing of one of the strands of the brush on the latter.
  • the device according to the invention comprises several brushes and each of these brushes is driven by an electric motor independent of that of the other brushes, each motor, with speed and direction of rotation adjustable in operation, being supplied through a control box common to all the brushes and reacting to the indications of a level sensor, with high threshold and low threshold, disposed upstream of each brush and above the tablet accumulation area, so as to regulate the accumulation of tablets in front of each brush and according to the position of this brush relative to the other brushes.
  • FIG. 1 is a schematic side view in cross section of a distribution brush when one of its strands is clamped on a tablet
  • FIG. 2 is a side view, in longitudinal section, of an embodiment of a distribution device forming part of a gravity distribution installation
  • FIG. 3 is a sectional view along line III-III of FIG. 2 showing, on an enlarged scale, an embodiment of a segmented brush according to the invention
  • FIG. 4 is a functional diagram of the means for driving the brushes in rotation
  • FIG. 5 is a view on an enlarged scale and in section along V-V of FIG. 3,
  • Figure 6 is a schematic side view of another embodiment of the distribution device.
  • FIG. 2 represents a device for the gravity distribution of tablets comprising, in an enclosure 10, a reservoir 12 for storing tablets 6.
  • the reservoir comprises distribution means 14. These means deliver, in waves, batches 15 of tablets 6 extending over the entire width of the blister sheet 2 scrolling in the direction of the arrow 1.
  • the distribution of the tablets in the blisters 7 of the sheet 2 is ensured by three distribution brushes 4a, 4b, 4c, associated to a smoothing brush 16.
  • the axis of rotation of the different brushes is horizontal and transverse.
  • the brushes are spaced longitudinally so as to form accumulation zones of the tablets referenced Z1 to Z4.
  • the means for supplying tablets, namely the reservoir 12, as well as the means 14 for distributing these tablets in waves are given by way of example, since they may have any other form, since these means are independent of the invention which relates to the device for distribution of the tablets on the blister sheet 2.
  • the sliding flap 17, displaceable in translation by a motor means 18 and the free end of which is provided with a straight brush 19, cooperating with a fixed brush 20, for sealing the bottom of the reservoir 12 or open it can be used alone, as shown, or be associated with another component, as described in French patent application FR-A-2 785 866.
  • each of the distribution brushes 4a, 4b, 4c is mounted to rotate freely between the front longitudinal wall 10a of the enclosure 10 and the rear wall 10b.
  • the wall 10a which preferably is translucent, carries a bearing 22, in which is slidably mounted, the outer cage of a bearing 23.
  • the inner cage of this bearing is mounted, with the possibility of longitudinal translation, on the extreme cylindrical and shouldered bearing 24 of a cylindrical and tubular shaft 25.
  • the other end of the shaft 25 is mounted to rotate freely in a ring 21 mounted, with the possibility of displacement in longitudinal translation, in a flange 26, secured to the rear longitudinal wall 10b of the enclosure.
  • tubular sections 27a, 27b, 27c constituting the barrel of the brush are mounted on the shaft 25with the possibility of sliding in translation and in rotation.
  • Each section is made of a composite material having a mass less than that of a metallic material.
  • each section has, in each of its diametrical faces, a recess 31 against the diametrical face of which abuts a support ring 28 made of synthetic material, such as polyamide.
  • the brush section 27a disposed next to the front wall 10a is associated with an extreme support ring 28a whose face opposite to that in support with the section 27a is supported on an adjustment ring 29. This is mounted free in rotation and in translation on the end of the shaft 25 and in support, by its other face, on the inner cage of the bearing 23.
  • the other extreme section 27c is associated with an extreme support ring 28c which comes to bear on the ring 21 of the rear bearing and tends to press this ring 21 against the diametrical support face of a member 30 positively linked in rotation to the output shaft of an electric motor 32 ( Figure 4).
  • This drive member also has an internal toothing 33 cooperating with corresponding dogs provided at the end of the shaft 25 to ensure the rotational drive of this shaft.
  • the shaft 25 is linked in translation to the member 30 by a screw 41 passing through its axial bore and screwing into a threaded well 30a of the member 30.
  • the head 41a of this screw is supported on the bottom of a cup protection 50.
  • the pressing force of the brush sections 27a to 27c on the rings 29, 28 and 21 ensuring their friction drive is determined by a threaded sleeve 35 screwing into a threaded bore 36 formed at the front end of the bearing 22.
  • the end of this sleeve bears on the outer cage of the bearing 23.
  • the screwing of the sleeve 35 therefore exerts, on the bearing 23, a longitudinal force which is transmitted by the inner cage of this bearing to the adjusting ring 29 and , by this ring, to the axial support ring 28a bearing on the first section 27a of the brush.
  • Each section transmits this force to the next section through the intermediate ring 28 and this up to the end ring 28c which, by pressing on the end ring 21, presses this ring against the drive member 30.
  • These different means allow ensuring the rotational drive of the sections while forming, for each section, a torque limiter.
  • this brush section can shift in rotation relative to the juxtaposed sections, thereby limiting the impact of its strands on the tablets.
  • the triggering threshold of the various torque limiters can be adjusted by screwing or unscrewing the threaded sleeve 35 and this even while the brush is rotated.
  • This freedom of sliding in rotation of each section is limited by elastic means which, in the embodiment shown, consist of a helical spring 40 having a length substantially equal to that of the brush.
  • This spring is disposed in a bore formed by the alignment of channels 42 (FIG. 5) formed in each brush section 27, parallel to the axis of rotation of the section, but close to its periphery.
  • the spring 40 also ensures the return of each section to its original position, as soon as the resistant force has ceased.
  • Other means for limiting the pivoting can be implemented, such as, complementary shapes made on the opposite faces of the sections, spiral spring associated with each section and one end of which is linked to the shaft 25 and the the other end is linked to the section.
  • the strands or bristles 5 are distributed in tufts 52 which are spaced angularly and possibly transversely.
  • each of the shafts 25 of the distribution brushes 4a to 4c, as well as the shaft 43 ensuring the rotation drive of the smoothing brush 16 is connected to an independent electric motor 32, of the type with adjustable speed and direction of rotation and, as shown in FIG. 4, each of these motors 32 is supplied and controlled by means of a link 45, by a command and control box 46.
  • This box is connected, by circuits electrical 47, to sensors 48.
  • sensors high threshold and low threshold, are arranged, as shown in FIG. 2, upstream of each of the brushes 4a, 4b, 4c and 16 and above the zone Z1 , Z2, Z3, Z4 receiving the tablets.
  • the command and control unit 46 is thus permanently informed of the level of accumulation of the tablets 6 in each of the zones, and can, according to this information, modify the speed of rotation, and even even the direction of rotation of each.
  • distribution brushes 4a, 4b, 4c to regulate the quantity of tablets placed in front of each of them, and in front of the smoothing brush 16, so that this quantity allows a fluid displacement of the tablets and is favorable for the rapid filling of all the cells 7 of the blister sheet 2 in movement.
  • the zone Z3 contains only a few tablets, while the zone, Z2 still has a large number thereof, the speed of rotation of the brush 4b, pivoting in the direction of the arrow 3 in FIG. 2, can be reduced to allow more tablets to pass.
  • the device according to the invention makes it possible to suppress any fragmentation or the formation of splinters on the tablets, to virtually eliminate the formation of dust, by simplifying the subsequent cleaning operations and the maintenance of the mechanism, but also to improve filling the cells and reducing, at start-up and during the shutdown phase, the time required to completely fill the rows of cells.
  • the brushes arranged upstream of a zone Z1 to Z4 comprising a pile of tablets that are too low are driven in rotation in opposite direction to that of the arrow 3 in Figure 2, to drive downstream the tablets taken from the upstream piles and simultaneously participate in the filling of the cells of the honeycomb rows stopped towards them.
  • the brush 4c upstream of this zone is stopped. This is the case until the formation of the heap in the upstream zone Z1, which as soon as it reaches the high threshold height, causes the shutter 17 to close and the drive means for the blister sheet to be started and or even upstream means forming the cells in this sheet. Simultaneously, the brushes are rotated in the direction of arrow 3, under the control of the housing 46 which then regulates the height of the heaps with the help of the sensors 48.
  • the distribution device comprises two groups A and B of four distribution brushes, respectively 104a to 104d, 104e to 104h, arranged upstream of a smoothing brush 116.
  • Each brush is identical to those described with reference to Figure 3 and is associated with a sensor 148 detecting the height of the pile of tablets arranged upstream of it. This sensor is connected by an electrical circuit 147 to the command and control unit 146 which leads to the control circuit 145 of the electric motor 132 of this brush.
  • Each of the groups A and B of brushes is associated with a counting barrier, respectively 160A and 160B disposed downstream of it and controlling the filling of the cells 7 of each of the rows of cells of the cellular sheet 2 in movement.
  • the metering barriers are connected by electrical circuits 161 to the housing 146. The addition of the metering barriers to the control means
  • the counting barriers 160A and 160B detect the filling of each row of cells 7 and inform the control unit 146 which reacts by adapting the instantaneous speed and the direction of rotation of the brushes, so that the filling of the cells is optimal.
  • the electric motors 132 of the brushes arranged upstream of the barrier (s) are supplied in the direction of an increase or a reduction in speed, and / or an inversion of their direction of rotation, as a function of the information provided by their sensor 148, so that, without altering the optimal filling conditions, the operating conditions which, until then, favored the reproducibility of the fault, are modified.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

The invention relates to a device comprising the following elements arranged above the path along which a honeycomb-structured sheet is displaced: at least one rotating brush (4a) extending transversally across the width of said sheet, whereby said brush is freely and rotatably mounted in a support and connected to means which can drive it rotationally under the control of a control housing. According to the invention, each brush (4a) comprises tubular brush sections (27a-27c) which are mounted on a cylindrical shaft (25), each section being connected to the rotational driving means (25,30) with a torque limiter (28) inserted therebetween, whereby said torque limiter tolerates the pivoting of the section on the shaft beyond an adjustable resistant torque value exerted upon said section and each section is associated with a means (40) limiting the rotation thereof with respect to the shaft (25) that bears it.

Description

Dispositif de répartition de comprimés ou équivalents pour installation de conditionnement dans des feuilles alvéolées en déplacement. Device for distributing tablets or the like for packaging installation in moving foil sheets.
L'invention est relative à une installation de conditionnement de comprimés dans des feuilles alvéolées en déplacement, et par exemple dans les alvéoles de plaquettes thermoformées dans une nappe en matière synthétique et recevant à un autre poste une pellicule de fermeture. Elle concerne plus particulièrement les dispositifs assurant la répartition des comprimés sur la largeur de la feuille alvéolée en défilement. De tels dispositifs sont disposés en aval d'un réservoir de stockage temporaire des comprimés à distribuer, d'une trémie de distribution et de moyens délivrant les comprimés par vagues de manière que ceux-ci forment un tas sur toute la largeur de la feuille alvéolée en défilement, en aval d'au moins une brosse cylindrique rotative, dont l'axe de rotation est transversal à la direction de défilement de la feuille.The invention relates to an installation for packaging tablets in alveolate sheets in movement, and for example in the blisters of thermoformed wafers in a sheet of synthetic material and receiving at another station a closure film. It relates more particularly to the devices ensuring the distribution of the tablets over the width of the blister sheet in movement. Such devices are arranged downstream of a temporary storage tank for the tablets to be dispensed, a distribution hopper and means delivering the tablets in waves so that they form a heap over the entire width of the blister sheet. in scrolling, downstream of at least one rotary cylindrical brush, the axis of rotation of which is transverse to the direction of travel of the sheet.
Selon les installations, la brosse est unique et associée à d'autres moyens de répartition disposés en aval d'elle ou est associée à plusieurs brosses identiques disposées en aval d'elle, par exemple comme décrit dans la demande de brevet français FR-A-2 785 866. Pour assurer la répartition des comprimés sur la largeur de la feuille et favoriser leur engagement dans les alvéoles de cette feuille, la ou les brosses sont entraînées en rotation de manière que leur partie inférieure jouxtant la feuille alvéolée se déplace en sens inverse de celui de déplacement de cette feuille. Durant ce mouvement, et comme montré sur la figure 1 annexée, où la flèche 1 désigne le sens de défilement de la feuille alvéolée 2, et la flèche 3 le sens de rotation de la brosse 4, les poils ou brins 5 de la brosse viennent en contact avec les produits 6 devant être distribués dans les alvéoles 7. Lors de la rotation de la brosse, il arrive que ces brins 5 s'arc-boutent sur certains des produits du tas, comme montré en 5a, en exerçant sur eux une contrainte localisée et temporaire cessant dès que le brin se déforme ou change de position par mouvement relatif entre la brosse et le tas de produits. Dans certaines conditions de fonctionnement, la multiplication de ces arcs- boutements dans une même période de temps freine le déplacement de la feuille alvéolée, posée sur la bande d'un convoyeur, et peut provoquer, par glissement de la feuille par rapport à la bande du convoyeur, le décalage des alvéoles de cette feuille par rapport à la position qui leur est assignée, ce qui peut entraîner des perturbations et défauts au poste de travail suivant de l'installation de conditionnement. Lorsque les produits devant être répartis sont des comprimés ou tout autre produit formé par compression ou amalgame de matériaux pulvérulents, la contrainte localisée exercée par les brins des brosses sur eux peut atteindre des valeurs suffisantes pour les fragmenter ou au moins pour en détacher une parcelle, c'est-à-dire générer des bris ou éclats et de la poussière. La poussière détériore les mécanismes du dispositif, et en se répartissant dans les alvéoles, dégrade l'aspect esthétique du conditionnement. La présentation du conditionnement peut aussi être détériorée par les comprimés ébréchés par perte d'un éclat. Enfin, et même si le dispositif est équipé de moyens d'aspiration prélevant les poussières et les bris ou éclats de petite dimension, la poussière formée s'accumule sur toutes les faces du dispositif et nécessite, en fin de travail, un nettoyage minutieux de chacun des éléments du dispositif, par exemple, lorsqu'il s'agit de l'utiliser pour distribuer des comprimés ayant une autre composition.Depending on the installation, the brush is unique and associated with other distribution means arranged downstream of it or is associated with several identical brushes arranged downstream of it, for example as described in the French patent application FR-A -2,785,866. To ensure the distribution of the tablets across the width of the sheet and to promote their engagement in the cells of this sheet, the brush or brushes are rotated so that their lower part adjoining the blister sheet moves in direction opposite to that of moving this sheet. During this movement, and as shown in the appended FIG. 1, where the arrow 1 designates the direction of travel of the blister sheet 2, and the arrow 3 the direction of rotation of the brush 4, the bristles or strands 5 of the brush come in contact with the products 6 to be distributed in the cells 7. During the rotation of the brush, it happens that these strands 5 are braced on some of the products in the pile, as shown in 5a, by exerting on them a localized and temporary stress ceasing as soon as the strand deforms or changes position by relative movement between the brush and the pile of products. Under certain operating conditions, the multiplication of these braces in the same period of time slows down the movement of the blister sheet, placed on the conveyor belt, and can cause the sheet to slide relative to the belt. of the conveyor, the offset of the cells of this sheet relative to the position assigned to them, which can cause disturbances and faults at the next work station of the packaging installation. When the products to be distributed are tablets or any other product formed by compression or amalgam of pulverulent materials, the localized stress exerted by the bristles of the brushes on them can reach values sufficient to fragment them or at least to detach a piece of them, that is to say to generate breakages or splinters and dust. The dust deteriorates the mechanisms of the device, and by being distributed in the cells, degrades the aesthetic appearance of the packaging. The presentation of the packaging can also be damaged by chipped tablets due to loss of shine. Finally, and even if the device is equipped with suction means collecting dust and small breaks or splinters, the dust formed accumulates on all sides of the device and requires, at the end of work, a thorough cleaning of each element of the device, for example, when it is a question of using it to dispense tablets having another composition.
L'invention a pour objet de fournir un dispositif de répartition qui remédie à ces inconvénients en supprimant toute fragmentation de comprimés, tout ralentissement de la feuille alvéolée, tout en réduisant considérablement la formation de poussières. A cet effet, dans le dispositif selon l'invention, chaque brosse est composée de tronçons tubulaires de brosse montés sur un arbre cylindrique commun, chaque tronçon de brosse étant, d'une part, relié aux moyens d'entraînement en rotation de la brosse avec interposition d'un limiteur de couple tolérant le pivotement du tronçon sur l'arbre au-delà d'une valeur réglable du couple résistant sollicitant ce tronçon et, d'autre part, associé à un moyen limitant sa rotation par rapport à l'arbre.The object of the invention is to provide a distribution device which overcomes these drawbacks by eliminating any fragmentation of tablets, any slowing down of the blister sheet, while considerably reducing the formation of dust. To this end, in the device according to the invention, each brush is composed of tubular brush sections mounted on a common cylindrical shaft, each brush section being, on the one hand, connected to the means for driving the brush in rotation. with the interposition of a torque limiter tolerating the pivoting of the section on the shaft beyond an adjustable value of the resistive torque stressing this section and, on the other hand, associated with a means limiting its rotation relative to the tree.
Grâce à cet agencement, chaque tronçon de brosse possède un degré de liberté en rotation qui, lorsque l'un de ses brins s'arc-boute sur un comprimé, lui permet de réduire la résistance sur la brosse et la contrainte sur le comprimé et d'éliminer les conséquences de cet arc-boutement sur les comprimés et sur le déplacement de la feuille alvéolée.Thanks to this arrangement, each brush section has a degree of freedom in rotation which, when one of its strands arches on a tablet, allows it to reduce the resistance on the brush and the stress on the tablet and to eliminate the consequences of this bracing on the tablets and on the displacement of the blister sheet.
Dans une forme d'exécution, le limiteur de couple associé à chaque tronçon comprend, d'une part, deux bagues d'appui axial constituant organes d'entraînement en rotation par frottement et venant en appui, d'un côté, contre une face diamétrale du tronçon, et de l'autre côté, contre une face diamétrale du tronçon juxtaposé, ou contre une face d'appui pour les bagues extrêmes, et, d'autre part, des moyens de réglage de la valeur du seuil de déclenchement du limiteur par modification de l'effort de plaquage axial exercé sur l'une des bagues extrêmes, par les tronçons sur les bagues intermédiaires et par l'autre bague extrême sur la face diamétrale d'un organe lié en rotation à des moyens moteurs.In one embodiment, the torque limiter associated with each section comprises, on the one hand, two axial support rings constituting drive members in rotation by friction and coming to bear, on one side, against a face diametral of the section, and on the other side, against a diametrical face of the juxtaposed section, or against a bearing face for the end rings, and, on the other hand, means for adjusting the value of the trigger threshold of the limiter by modifying the axial plating force exerted on one of the end rings, by the sections on the intermediate rings and by the other end ring on the diametrical face of a member linked in rotation to motor means.
Avec cette disposition, chaque tronçon est associé à un limiteur de couple dont le réglage du seuil de déclenchement est assuré par modification de l'effort de plaquage exercé entre bagues et tronçons. Ce réglage est réalisé depuis l'une des extrémités de la brosse, et peut être effectué en fonctionnement.With this arrangement, each section is associated with a torque limiter, the setting of the triggering threshold of which is ensured by modification of the plating force exerted between rings and sections. This adjustment is carried out from one of the ends of the brush, and can be carried out in operation.
Dans une forme de réalisation, les moyens de réglage du limiteur de couple comprennent, dans un palier supportant le roulement de guidage en rotation de l'arbre portant les tronçons de brosses, un manchon fileté se vissant dans le palier et prenant appui, par l'intermédiaire du roulement précité, sur une bague de réglage, ladite bague étant en appui sur l'une des bagues extrêmes de l'empilage bague-tronçon de brosse. Ce dispositif simple est très fiable.In one embodiment, the means of adjusting the torque limiter comprise, in a bearing supporting the rotation guide bearing of the shaft carrying the brush sections, a threaded sleeve which is screwed into the bearing and is supported by the 'Intermediate of the aforementioned bearing, on an adjustment ring, said ring being in abutment on one of the extreme rings of the stack ring-brush section. This simple device is very reliable.
Avantageusement, chaque tronçon de brosse est constitué par un manchon en matériau composite ayant une masse inférieure à un manchon métallique de même dimension.Advantageously, each brush section is constituted by a sleeve made of composite material having a mass less than a metal sleeve of the same dimension.
Cette caractéristique permet de réduire l'inertie de chaque tronçon et en conséquence, la valeur de l'effort cinétique pouvant être transmis à un comprimé lors de l'arc-boutement d'un des brins de la brosse sur ce dernier.This characteristic makes it possible to reduce the inertia of each section and consequently, the value of the kinetic force which can be transmitted to a tablet during the bracing of one of the strands of the brush on the latter.
Dans une forme d'exécution particulière, le dispositif selon l'invention comporte plusieurs brosses et chacune de ces brosses est entraînée par un moteur électrique indépendant de celui des autres brosses, chaque moteur, à vitesse et sens de rotation réglables en fonctionnement, étant alimenté à travers un boîtier de commande commun à toutes les brosses et réagissant aux indications d'un capteur de niveau, à seuil haut et à seuil bas, disposé en amont de chaque brosse et au-dessus de la zone d'accumulation des comprimés, de manière à réguler l'accumulation de comprimés devant chaque brosse et selon la position de cette brosse par rapport aux autres brosses.In a particular embodiment, the device according to the invention comprises several brushes and each of these brushes is driven by an electric motor independent of that of the other brushes, each motor, with speed and direction of rotation adjustable in operation, being supplied through a control box common to all the brushes and reacting to the indications of a level sensor, with high threshold and low threshold, disposed upstream of each brush and above the tablet accumulation area, so as to regulate the accumulation of tablets in front of each brush and according to the position of this brush relative to the other brushes.
Cet aménagement assure la gestion des niveaux de comprimés se trouvant entre chaque brosse, pour éviter tout amoncellement de ces comprimés, et permet donc, en fonction de leurs caractéristiques d'imbrication, dépendant de leur forme et de leur dimension, mais aussi de la vitesse de déplacement de la feuille et des conditions de remplissage, de leur donner une fluidité favorisant leur répartition par les brosses dans les alvéoles vides en défilement. D'autres caractéristiques et avantages ressortiront de la description qui suit en référence au dessin schématique annexé représentant, à titre d'exemple, une forme d'exécution du dispositif selon l'invention.This arrangement ensures the management of the levels of tablets located between each brush, to avoid any accumulation of these tablets, and therefore makes it possible, according to their nesting characteristics, depending on their shape and size, but also on the speed of movement of the sheet and the filling conditions, to give them a fluidity favoring their distribution by the brushes in the empty cells in movement. Other characteristics and advantages will emerge from the description which follows with reference to the appended diagrammatic drawing representing, by way of example, an embodiment of the device according to the invention.
Figure 1 est une vue schématique de côté en coupe transversale d'une brosse de répartition lorsque l'un de ses brins s'arc-boute sur un comprimé,FIG. 1 is a schematic side view in cross section of a distribution brush when one of its strands is clamped on a tablet,
Figure 2 est une vue de côté, en coupe longitudinale, d'une forme d'exécution d'un dispositif de répartition faisant partie d'une installation de distribution gravitaire,FIG. 2 is a side view, in longitudinal section, of an embodiment of a distribution device forming part of a gravity distribution installation,
Figure 3 est une vue en coupe suivant lll-lll de figure 2 montrant, à échelle agrandie, une forme d'exécution d'une brosse segmentée selon l'invention,FIG. 3 is a sectional view along line III-III of FIG. 2 showing, on an enlarged scale, an embodiment of a segmented brush according to the invention,
Figure 4 est un schéma fonctionnel des moyens d'entraînement en rotation des brosses,FIG. 4 is a functional diagram of the means for driving the brushes in rotation,
Figure 5 est une vue à échelle agrandie et en coupe suivant V-V de figure 3,FIG. 5 is a view on an enlarged scale and in section along V-V of FIG. 3,
Figure 6 est une vue de coté schématique d'une autre forme d'exécution du dispositif de répartition.Figure 6 is a schematic side view of another embodiment of the distribution device.
La figure 2 représente un dispositif de distribution gravitaire de comprimés comportant dans une enceinte 10, un réservoir 12 de stockage des comprimés 6. En partie inférieure, le réservoir comporte des moyens de distribution 14. Ces moyens délivrent, par vagues, des lots 15 de comprimés 6 s'étendant sur toute la largeur de la feuille alvéolée 2 en défilement dans le sens de la flèche 1. La répartition des comprimés dans les alvéoles 7 de la feuille 2 est assurée par trois brosses de répartition 4a, 4b, 4c, associées à une brosse de lissage 16. L'axe de rotation des différentes brosses est horizontal et transversal. Les brosses sont espacées longitudinalement de manière à former des zones d'accumulation des comprimés référencés Z1 à Z4.FIG. 2 represents a device for the gravity distribution of tablets comprising, in an enclosure 10, a reservoir 12 for storing tablets 6. In the lower part, the reservoir comprises distribution means 14. These means deliver, in waves, batches 15 of tablets 6 extending over the entire width of the blister sheet 2 scrolling in the direction of the arrow 1. The distribution of the tablets in the blisters 7 of the sheet 2 is ensured by three distribution brushes 4a, 4b, 4c, associated to a smoothing brush 16. The axis of rotation of the different brushes is horizontal and transverse. The brushes are spaced longitudinally so as to form accumulation zones of the tablets referenced Z1 to Z4.
Les moyens d'alimentation en comprimés, à savoir le réservoir 12, de même que les moyens 14 de distribution par vagues de ces comprimés sont donnés à titre d'exemple, car ils peuvent présenter toute autre forme, puisque ces moyens sont indépendants de l'invention qui porte sur le dispositif de répartition des comprimés sur la feuille alvéolée 2. Ainsi, le volet coulissant 17, déplaçable en translation par un moyen moteur 18 et dont l'extrémité libre est munie d'une brosse rectiligne 19, coopérant avec une brosse fixe 20, pour obturer le fond du réservoir 12 ou l'ouvrir, peut être utilisé seul, comme représenté, ou être associé à un autre volet, comme décrit dans la demande de brevet français FR-A-2 785 866.The means for supplying tablets, namely the reservoir 12, as well as the means 14 for distributing these tablets in waves are given by way of example, since they may have any other form, since these means are independent of the invention which relates to the device for distribution of the tablets on the blister sheet 2. Thus, the sliding flap 17, displaceable in translation by a motor means 18 and the free end of which is provided with a straight brush 19, cooperating with a fixed brush 20, for sealing the bottom of the reservoir 12 or open it, can be used alone, as shown, or be associated with another component, as described in French patent application FR-A-2 785 866.
Comme montré pour la brosse 4a à la figure 3, chacune des brosses de répartition 4a, 4b, 4c, est montée libre en rotation entre la paroi longitudinale antérieure 10a de l'enceinte 10 et la paroi postérieure 10b. Plus précisément, la paroi 10a, qui de préférence est translucide, porte un palier 22, dans lequel est monté à coulissement glissant, la cage extérieure d'un roulement 23. La cage intérieure de ce roulement est montée, avec possibilité de translation longitudinale, sur la portée cylindrique extrême et épaulée 24 d'un arbre cylindrique et tubulaire 25. L'autre extrémité de l'arbre 25 est montée libre en rotation dans une bague 21 montée, avec possibilité de déplacement en translation longitudinale, dans un flasque 26, solidaire de la paroi longitudinale postérieure 10b de l'enceinte.As shown for the brush 4a in FIG. 3, each of the distribution brushes 4a, 4b, 4c, is mounted to rotate freely between the front longitudinal wall 10a of the enclosure 10 and the rear wall 10b. More specifically, the wall 10a, which preferably is translucent, carries a bearing 22, in which is slidably mounted, the outer cage of a bearing 23. The inner cage of this bearing is mounted, with the possibility of longitudinal translation, on the extreme cylindrical and shouldered bearing 24 of a cylindrical and tubular shaft 25. The other end of the shaft 25 is mounted to rotate freely in a ring 21 mounted, with the possibility of displacement in longitudinal translation, in a flange 26, secured to the rear longitudinal wall 10b of the enclosure.
Plusieurs tronçons tubulaires 27a, 27b, 27c constituant le fût de la brosse sont montés sur l'arbre 25avec possibilité de glissement en translation et en rotation. Chaque tronçon est réalisé dans un matériau composite ayant une masse inférieure à celle d'un matériau métallique.Several tubular sections 27a, 27b, 27c constituting the barrel of the brush are mounted on the shaft 25with the possibility of sliding in translation and in rotation. Each section is made of a composite material having a mass less than that of a metallic material.
Dans la forme d'exécution représentée, chaque tronçon comporte, dans chacune de ses faces diamétrales, un embrèvement 31 contre la face diamétrale duquel vient en appui une bague d'appui 28 réalisée en matériau synthétique, tel qu'en polyamide. Le tronçon de brosse 27a disposé à côté de la paroi antérieure 10a est associé à une bague d'appui extrême 28a dont la face opposée à celle en appui avec le tronçon 27a est en appui sur une bague de réglage 29. Celle-ci est montée libre en rotation et en translation sur l'extrémité de l'arbre 25 et en appui, par son autre face, sur la cage intérieure du roulement 23.In the embodiment shown, each section has, in each of its diametrical faces, a recess 31 against the diametrical face of which abuts a support ring 28 made of synthetic material, such as polyamide. The brush section 27a disposed next to the front wall 10a is associated with an extreme support ring 28a whose face opposite to that in support with the section 27a is supported on an adjustment ring 29. This is mounted free in rotation and in translation on the end of the shaft 25 and in support, by its other face, on the inner cage of the bearing 23.
L'autre tronçon extrême 27c est associé à une bague d'appui extrême 28c qui vient en appui sur la bague 21 du palier postérieur et tend à plaquer cette bague 21 contre la face diamétrale d'appui d'un organe 30 lié positivement en rotation à l'arbre de sortie d'un moteur électrique 32 (figure 4). Cet organe d'entraînement comporte également une denture interne 33 coopérant avec des crabots correspondants ménagés à l'extrémité de l'arbre 25 pour assurer l'entraînement en rotation de cet arbre.The other extreme section 27c is associated with an extreme support ring 28c which comes to bear on the ring 21 of the rear bearing and tends to press this ring 21 against the diametrical support face of a member 30 positively linked in rotation to the output shaft of an electric motor 32 (Figure 4). This drive member also has an internal toothing 33 cooperating with corresponding dogs provided at the end of the shaft 25 to ensure the rotational drive of this shaft.
L'arbre 25 est lié en translation à l'organe 30 par une vis 41 traversant son alésage axial et se vissant dans un puits fileté 30a de l'organe 30. La tête 41a de cette vis prend appui sur le fond d'une coupelle de protection 50.The shaft 25 is linked in translation to the member 30 by a screw 41 passing through its axial bore and screwing into a threaded well 30a of the member 30. The head 41a of this screw is supported on the bottom of a cup protection 50.
L'effort de plaquage des tronçons de brosses 27a à 27c sur les bagues 29, 28 et 21 assurant leur entraînement par frottement, est déterminé par un manchon fileté 35 se vissant dans un alésage fileté 36 ménagé à l'extrémité antérieure du palier 22. L'extrémité de ce manchon vient en appui sur la cage extérieure du roulement 23. Le vissage du manchon 35 exerce donc, sur le roulement 23, un effort longitudinal qui est transmis par la cage intérieure de ce roulement à la bague de réglage 29 et, par cette bague, à la bague d'appui axial 28a en appui sur le premier tronçon 27a de la brosse. Chaque tronçon transmet cet effort au tronçon suivant par la bague intermédiaire 28 et cela jusqu'à la bague extrême 28c qui, par appui sur la bague extrême 21 , plaque cette bague contre l'organe d'entraînement 30. Ces différents moyens permettent d'assurer l'entraînement en rotation des tronçons tout en formant, pour chaque tronçon, un limiteur de couple. Ainsi, lorsque l'un des brins 5 d'un tronçon de brosse s'arc-boute sur un comprimé et communique au tronçon de brosse un couple résistant de valeur supérieure à celle du couple d'entraînement qui lui est communiqué par les deux bagues 28 qui l'entourent, ce tronçon de brosse peut se décaler en rotation par rapport aux tronçons juxtaposés, en limitant ainsi l'impact de ses brins sur les comprimés.The pressing force of the brush sections 27a to 27c on the rings 29, 28 and 21 ensuring their friction drive is determined by a threaded sleeve 35 screwing into a threaded bore 36 formed at the front end of the bearing 22. The end of this sleeve bears on the outer cage of the bearing 23. The screwing of the sleeve 35 therefore exerts, on the bearing 23, a longitudinal force which is transmitted by the inner cage of this bearing to the adjusting ring 29 and , by this ring, to the axial support ring 28a bearing on the first section 27a of the brush. Each section transmits this force to the next section through the intermediate ring 28 and this up to the end ring 28c which, by pressing on the end ring 21, presses this ring against the drive member 30. These different means allow ensuring the rotational drive of the sections while forming, for each section, a torque limiter. Thus, when one of the strands 5 of a brush section arises on a tablet and communicates to the brush section a resistant torque of value greater than that of the drive torque communicated to it by the two rings 28 surrounding it, this brush section can shift in rotation relative to the juxtaposed sections, thereby limiting the impact of its strands on the tablets.
Le seuil de déclenchement des divers limiteurs de couple peut être réglé par vissage ou dévissage du manchon fileté 35 et cela alors même que la brosse est entraînée en rotation.The triggering threshold of the various torque limiters can be adjusted by screwing or unscrewing the threaded sleeve 35 and this even while the brush is rotated.
Cette liberté de glissement en rotation de chaque tronçon est limitée par des moyens élastiques qui, dans la forme d'exécution représentée, sont constitués par un ressort hélicoïdal 40 ayant une longueur sensiblement égale à celle de la brosse. Ce ressort est disposé dans un alésage formé par l'alignement de canaux 42 (figure 5) ménagés dans chaque tronçon de brosse 27, parallèlement à l'axe de rotation du tronçon, mais à proximité de sa périphérie. Le ressort 40 assure aussi le rappel de chaque tronçon dans sa position d'origine, dès que l'effort résistant a cessé. D'autres moyens de limitation du pivotement peuvent être mis en œuvre, tels que, formes complémentaires réalisées sur les faces en vis à vis des tronçons, ressort en spirale associé à chaque tronçon et dont une extrémité est liée à l'arbre 25 et l'autre extrémité est liée au tronçon. Pour réduire les conséquences de l'arc-boutement des brins des brosses, une liberté de glissement angulaire de l'ordre de quelques degrés, est suffisante.This freedom of sliding in rotation of each section is limited by elastic means which, in the embodiment shown, consist of a helical spring 40 having a length substantially equal to that of the brush. This spring is disposed in a bore formed by the alignment of channels 42 (FIG. 5) formed in each brush section 27, parallel to the axis of rotation of the section, but close to its periphery. The spring 40 also ensures the return of each section to its original position, as soon as the resistant force has ceased. Other means for limiting the pivoting can be implemented, such as, complementary shapes made on the opposite faces of the sections, spiral spring associated with each section and one end of which is linked to the shaft 25 and the the other end is linked to the section. To reduce the consequences of the bracing of the brush strands, an angular sliding freedom of the order of a few degrees is sufficient.
Avantageusement, et afin de mieux contrôler le phénomène d'arc- boutement sur chacun des tronçons de brosse 27a à 27c, les brins ou poils 5 sont répartis en touffes 52 qui sont espacées angulairement et éventuellement transversalement.Advantageously, and in order to better control the phenomenon of bracing on each of the brush sections 27a to 27c, the strands or bristles 5 are distributed in tufts 52 which are spaced angularly and possibly transversely.
Suivant une caractéristique complémentaire de l'invention, chacun des arbres 25 des brosses de répartition 4a à 4c, de même que l'arbre 43 assurant l'entraînement en rotation de la brosse de lissage 16, est relié à un moteur électrique indépendant 32, du type à vitesse et sens de rotation réglables et, comme montré à la figure 4, chacun de ces moteurs 32 est alimenté et commandé moyennant une liaison 45, par un boîtier de commande et de contrôle 46. Ce boîtier est relié, par des circuits électriques 47, à des capteurs 48. Ces capteurs, à seuil haut et à seuil bas, sont disposés, comme montré à la figure 2, en amont de chacune des brosses 4a, 4b, 4c et 16 et au- dessus de la zone Z1 , Z2, Z3, Z4 recevant les comprimés. Le boîtier de commande et de contrôle 46 est ainsi informé en permanence du niveau d'accumulation des comprimés 6 dans chacune des zones, et peut, en fonction de ces informations, modifier la vitesse de rotation, et voire même le sens de rotation de chacune des brosses de répartition 4a, 4b, 4c pour réguler la quantité de comprimés disposés devant chacune d'elles, et devant la brosse de lissage 16, afin que cette quantité permette un déplacement fluide des comprimés et soit favorable au remplissage rapide de toutes les alvéoles 7 de la feuille alvéolée 2 en défilement. Ainsi, par exemple, si la zone Z3 ne contient que peu de comprimés, alors que la zone ,Z2 en comporte encore beaucoup, la vitesse de rotation de la brosse 4b, pivotant dans le sens de la flèche 3 de figure 2, peut être réduite pour laisser passer davantage de comprimés. Si la différence est trop importante, la brosse 4b peut même être entraînée en sens inverse de la flèche 3. Cet ajustement du niveau de comprimés et de leur fluidité dans chacune des zones Z1 à Z4 permet aussi de réduire les risques d'arc- boutement et, en conséquence, contribue à la suppression de la fragmentation des comprimés et de la formation de poussières.According to an additional characteristic of the invention, each of the shafts 25 of the distribution brushes 4a to 4c, as well as the shaft 43 ensuring the rotation drive of the smoothing brush 16, is connected to an independent electric motor 32, of the type with adjustable speed and direction of rotation and, as shown in FIG. 4, each of these motors 32 is supplied and controlled by means of a link 45, by a command and control box 46. This box is connected, by circuits electrical 47, to sensors 48. These sensors, high threshold and low threshold, are arranged, as shown in FIG. 2, upstream of each of the brushes 4a, 4b, 4c and 16 and above the zone Z1 , Z2, Z3, Z4 receiving the tablets. The command and control unit 46 is thus permanently informed of the level of accumulation of the tablets 6 in each of the zones, and can, according to this information, modify the speed of rotation, and even even the direction of rotation of each. distribution brushes 4a, 4b, 4c to regulate the quantity of tablets placed in front of each of them, and in front of the smoothing brush 16, so that this quantity allows a fluid displacement of the tablets and is favorable for the rapid filling of all the cells 7 of the blister sheet 2 in movement. Thus, for example, if the zone Z3 contains only a few tablets, while the zone, Z2 still has a large number thereof, the speed of rotation of the brush 4b, pivoting in the direction of the arrow 3 in FIG. 2, can be reduced to allow more tablets to pass. If the difference is too large, the brush 4b can even be driven in the opposite direction to the arrow 3. This adjustment of the level of tablets and their fluidity in each of the zones Z1 to Z4 also makes it possible to reduce the risks of arcing. but also contributes to suppressing the fragmentation of the tablets and the formation of dust.
Il ressort que le dispositif selon l'invention permet de supprimer toute fragmentation ou formation d'éclats sur les comprimés, de supprimer pratiquement la formation de poussières, en simplifiant les opérations de nettoyage ultérieur et l'entretien du mécanisme, mais aussi d'améliorer le remplissage des alvéoles et de réduire, au démarrage et dans la phase d'arrêt, le temps nécessaire au remplissage complet des rangées d'alvéoles.It appears that the device according to the invention makes it possible to suppress any fragmentation or the formation of splinters on the tablets, to virtually eliminate the formation of dust, by simplifying the subsequent cleaning operations and the maintenance of the mechanism, but also to improve filling the cells and reducing, at start-up and during the shutdown phase, the time required to completely fill the rows of cells.
Ainsi par exemple, lors de l'arrêt de l'installation, pour une pause temporaire, et alors que le volet 17 reste fermé, les brosses disposées en amont d'une zone Z1 à Z4 comportant un tas de comprimés trop bas, sont entraînées en rotation en sens inverse de celui ce la flèche 3 à la figure 2, pour chasser vers l'aval les comprimés prélevés sur les tas amont et simultanément participer au remplissage des alvéoles des rangées alvéolées arrêtées vers elles.Thus, for example, when the installation is stopped, for a temporary pause, and while the flap 17 remains closed, the brushes arranged upstream of a zone Z1 to Z4 comprising a pile of tablets that are too low, are driven in rotation in opposite direction to that of the arrow 3 in Figure 2, to drive downstream the tablets taken from the upstream piles and simultaneously participate in the filling of the cells of the honeycomb rows stopped towards them.
De même, lorsqu'il faut vider le réservoir 12 en prévision d'un changement de comprimé, et avant arrêt du défilement de la feuille alvéolée 2, mais alors que le volet 17 est en position d'ouverture pour distribuer tous les comprimés contenus dans le réservoir 12, dès que le tas formé dans la zone Z1 devant la brosse 4a atteint le niveau bas, la brosse 4a est entraînée en sens inverse de la flèche 3 pour chasser devant elle les comprimés et les faire passer à la zone suivante Z2. L'opération est répétée de la zone Z2 à la zone Z3, et de Z3 à Z4.Similarly, when it is necessary to empty the reservoir 12 in anticipation of a change of tablet, and before stopping the scrolling of the blister sheet 2, but while the flap 17 is in the open position to dispense all the tablets contained in the reservoir 12, as soon as the pile formed in the zone Z1 in front of the brush 4a reaches the low level, the brush 4a is driven in the opposite direction to the arrow 3 to drive the tablets in front of it and pass them to the next zone Z2. The operation is repeated from zone Z2 to zone Z3, and from Z3 to Z4.
De cette façon, aucun comprimé resté isolé sur la feuille alvéolée 2 et le nombre de conditionnements non complètement remplis est réduit, ce qui limite les pertes de conditionnement et de comprimés.In this way, no tablet remained isolated on the blister sheet 2 and the number of packages not completely filled is reduced, which limits the loss of packaging and tablets.
Il en est de même pour limiter ces pertes de conditionnements non remplis lors du démarrage d'une nouvelle opération de remplissage de conditionnements avec une autre feuille alvéolée, ayant des alvéoles de forme et répartition différentes, et ou des comprimés d'une autre forme. Après mise en place de la nouvelle feuille alvéolée sur ses moyens d'entraînement, mise en place des nouveaux comprimés dans le réservoir 12 et, éventuellement, remplacement des brosses par des brosses de diamètre extérieur différent ou ayant des poils ou brins répartis différemment, le volet 17 est ouvert et les brosses sont entraînées dans le sens opposé à la flèche 3 pour progressivement former, dans chacune des zones Z1 à Z4, des tas de comprimés.It is the same to limit these losses of unfilled packages when starting a new operation for filling packages with another blister sheet, having blisters of different shape and distribution, and or tablets of another shape. After placing the new blister sheet on its drive means, placing new tablets in the reservoir 12 and, optionally, replacing the brushes with brushes of different outside diameter or having bristles or bristles distributed differently, the flap 17 is open and the brushes are driven in the opposite direction to arrow 3 to gradually form, in each of zones Z1 to Z4, piles of tablets.
Dès que le tas de la zone Z4 le plus aval atteint la hauteur souhaitée, détectée par son capteur 48, la brosse 4c en amont de cette zone est arrêtée. Il en est ainsi jusqu'à la formation du tas de la zone amont Z1 , qui dès qu'il atteint la hauteur de seuil haut, entraîne la fermeture du volet 17 et la mise en route des moyens d'entraînement de la feuille alvéolée et, voire même, des moyens amont formant les alvéoles dans cette feuille. Simultanément, les brosses sont entraînées en rotation dans le sens de la flèche 3, sous le contrôle du boîtier 46 qui, alors, régule la hauteur des tas avec l'aide des capteurs 48.As soon as the pile in the most downstream zone Z4 reaches the desired height, detected by its sensor 48, the brush 4c upstream of this zone is stopped. This is the case until the formation of the heap in the upstream zone Z1, which as soon as it reaches the high threshold height, causes the shutter 17 to close and the drive means for the blister sheet to be started and or even upstream means forming the cells in this sheet. Simultaneously, the brushes are rotated in the direction of arrow 3, under the control of the housing 46 which then regulates the height of the heaps with the help of the sensors 48.
Dans une autre forme d'exécution, montrée figure 6, le dispositif de répartition comprend deux groupes A et B de quatre brosses de répartition, respectivement 104a à 104d, 104e à 104h, disposées en amont d'une brosse de lissage 116. Chaque brosse est identique à celles décrites en référence à la figure 3 et est associée à un capteur 148 détectant la hauteur du tas de comprimés disposé en amont d'elle. Ce capteur est relié par un circuit électrique 147 au boîtier de commande et de contrôle 146 auquel aboutit le circuit de commande 145 du moteur électrique 132 de cette brosse. Chacun des groupes A et B de brosses est associé à une barrière de comptage, respectivement 160A et 160B disposée en aval de lui et contrôlant le remplissage des alvéoles 7 de chacune des rangées d'alvéoles de la feuille alvéolée 2 en défilement. Les barrières de comptage sont reliées par des circuits électriques 161 au boîtier 146. L'adjonction des barrières de comptage aux moyens de commandeIn another embodiment, shown in FIG. 6, the distribution device comprises two groups A and B of four distribution brushes, respectively 104a to 104d, 104e to 104h, arranged upstream of a smoothing brush 116. Each brush is identical to those described with reference to Figure 3 and is associated with a sensor 148 detecting the height of the pile of tablets arranged upstream of it. This sensor is connected by an electrical circuit 147 to the command and control unit 146 which leads to the control circuit 145 of the electric motor 132 of this brush. Each of the groups A and B of brushes is associated with a counting barrier, respectively 160A and 160B disposed downstream of it and controlling the filling of the cells 7 of each of the rows of cells of the cellular sheet 2 in movement. The metering barriers are connected by electrical circuits 161 to the housing 146. The addition of the metering barriers to the control means
146, du sens et de la vitesse de rotation de chacune des brosses, et la structure des brosses permettant à leurs brins de ne pas s'arc-bouter sur les comprimés et de ne pas freiner le défilement de la feuille alvéolée 2, augmentent les possibilités de l'installation. En fonctionnement normal, c'est-à-dire lorsque la feuille se déplace dans le sens de la flèche 1 , lés barrières de comptage 160A et 160B détectent le remplissage de chaque rangée d'alvéoles 7 et informent le boîtier de commande 146 qui réagit en adaptant la vitesse instantanée et le sens de rotation des brosses, afin que le remplissage des alvéoles soit optimal. Si l'examen effectué par l'une ou l'autre ou par les deux barrières de comptage révèle un mauvais remplissage d'une rangée d'alvéoles et que ce défaut se répète de façon cyclique, les moteurs électriques 132 des brosses disposées en amont de la ou des barrières sont alimentés dans le sens d'une augmentation ou d'une réduction de la vitesse, et/ou d'une inversion de leur sens de rotation, en fonction de l'information fournie par leur capteur 148, afin que, sans altérer les conditions de remplissage optimal, soient modifiées les conditions de fonctionnement qui, jusqu'alors, favorisaient la reproductibilité du défaut.146, of the direction and of the speed of rotation of each of the brushes, and the structure of the brushes allowing their strands not to brace themselves on the tablets and not to slow down the movement of the blister sheet 2, increase the installation possibilities. In normal operation, that is to say when the sheet moves in the direction of arrow 1, the counting barriers 160A and 160B detect the filling of each row of cells 7 and inform the control unit 146 which reacts by adapting the instantaneous speed and the direction of rotation of the brushes, so that the filling of the cells is optimal. If the examination carried out by one or the other or by the two counting barriers reveals an incorrect filling of a row of cells and this fault repeats itself cyclically, the electric motors 132 of the brushes arranged upstream of the barrier (s) are supplied in the direction of an increase or a reduction in speed, and / or an inversion of their direction of rotation, as a function of the information provided by their sensor 148, so that, without altering the optimal filling conditions, the operating conditions which, until then, favored the reproducibility of the fault, are modified.
De même, dès que le défaut est détecté par la barrière amontSimilarly, as soon as the fault is detected by the upstream barrier
160A, une modification des conditions de fonctionnement des brosses en aval d'elle, à savoir 104e à 104h, permet de compenser le défaut de remplissage d'une rangée d'alvéole avant passage de celle-ci à la barrière suivante 160B, qui constate alors la pertinence des actions engagées.160A, a modification of the operating conditions of the brushes downstream from it, namely 104e to 104h, makes it possible to compensate for the failure to fill a row of cells before passing it to the next barrier 160B, which notes then the relevance of the actions undertaken.
Bien que les meilleurs résultats soient obtenus avec deux barrières de comptage 160A et 160B des alvéoles remplis, la présence d'une seule barrière en aval d'un seul groupe de brosses permet de réduire les défauts de remplissage cycliques et de supprimer la reproductibilité de ces défauts. Although the best results are obtained with two counting barriers 160A and 160B of the filled cells, the presence of a single barrier downstream of a single group of brushes makes it possible to reduce the cyclic filling defects and to eliminate the reproducibility of these defaults.

Claims

REVENDICATIONS 1. Dispositif de répartition de comprimés ou équivalents pour une installation de conditionnement dans des feuilles alvéolées en déplacement, dispositif comportant, au-dessus de la trajectoire de déplacement de la feuille alvéolée (2), au moins une brosse rotative (4a) s'étendant transversalement sur la largeur de la feuille, ladite brosse étant montée libre en rotation dans un support et étant reliée à des moyens aptes à l'entraîner en rotation sous le contrôle d'un boîtier de commande, caractérisé en ce que chaque brosse (4a, 4b, 4c, 16) est composée de tronçons tubulaires de brosse (27a à 27c) montés sur un arbre cylindrique (25), chaque tronçon étant, d'une part, relié au moyen d'entraînement en rotation (25, 30) avec interposition d'un limiteur de couple (28) tolérant le pivotement du tronçon sur l'arbre au-delà d'une valeur réglable du couple résistant sollicitant ce tronçon et, d'autre part, associé à un moyen (40) limitant sa rotation par rapport à l'arbre (25) qui le porte. CLAIMS 1. Device for distributing tablets or the like for a packaging installation in moving foil sheets, device comprising, above the path of movement of the foil sheet (2), at least one rotary brush (4a) s extending transversely across the width of the sheet, said brush being mounted to rotate freely in a support and being connected to means capable of driving it in rotation under the control of a control unit, characterized in that each brush ( 4a, 4b, 4c, 16) is made up of tubular brush sections (27a to 27c) mounted on a cylindrical shaft (25), each section being, on the one hand, connected to the rotary drive means (25, 30 ) with the interposition of a torque limiter (28) tolerating the pivoting of the section on the shaft beyond an adjustable value of the resistive torque stressing this section and, on the other hand, associated with a means (40) limiting her rotation relative to the shaft (25) which carries it.
2. Dispositif selon la revendication 1 , caractérisé en ce que le limiteur de couple associé à chaque tronçon (27a à 27c) comprend, d'une part, deux bagues d'appui axial (28) constituant organes d'entraînement en rotation par frottement et venant en appui, d'un côté, contre une face diamétrale du tronçon, et de l'autre côté, contre une face diamétrale du tronçon juxtaposé, ou contre une face d'appui pour les bagues extrêmes, et, d'autre part, des moyens de réglage (35, 23, 29) de la valeur du seuil de déclenchement du limiteur par modification de l'effort de plaquage axial exercé successivement sur l'une des bagues extrêmes (28a), par les tronçons (27a à 27b) sur les bagues intermédiaires (28) et par l'autre bague extrême (28c, 21) sur la face diamétrale d'un organe lié en rotation au moyen moteur.2. Device according to claim 1, characterized in that the torque limiter associated with each section (27a to 27c) comprises, on the one hand, two axial support rings (28) constituting drive members in friction rotation and coming to bear, on one side, against a diametrical face of the section, and on the other side, against a diametrical face of the juxtaposed section, or against a bearing face for the end rings, and, on the other hand , adjustment means (35, 23, 29) of the value of the trigger threshold of the limiter by modification of the axial plating force successively exerted on one of the extreme rings (28a), by the sections (27a to 27b ) on the intermediate rings (28) and by the other end ring (28c, 21) on the diametrical face of a member linked in rotation to the motor means.
3. Dispositif selon la revendication 2, caractérisé en ce que les moyens de réglage du limiteur de couple comprennent, dans un palier (22) supportant le roulement (23) de guidage en rotation de l'arbre (25) portant les tronçons de brosses (27a à 27c), un manchon fileté (35) se vissant dans le palier et prenant appui, par l'intermédiaire du roulement (23) précité, sur une bague de réglage (29), ladite bague étant en appui sur l'une des bagues extrêmes (28a) de l'empilage bague-tronçon.3. Device according to claim 2, characterized in that the means for adjusting the torque limiter comprise, in a bearing (22) supporting the bearing (23) for guiding the shaft in rotation (25) carrying the brush sections (27a to 27c), a threaded sleeve (35) screwing into the bearing and bearing, by means of the aforementioned bearing (23), on an adjustment ring (29), said ring being supported on one extreme rings (28a) of the ring-section stacking.
4. Dispositif selon la revendication 1 , caractérisé en ce que chaque tronçon de brosse (27a à 27c) est constitué par un manchon en matériau composite ayant une masse inférieure à un manchon métallique de même dimension. 4. Device according to claim 1, characterized in that each brush section (27a to 27c) is constituted by a sleeve of composite material having a mass less than a metal sleeve of the same dimension.
5. Dispositif selon la revendication 1 , caractérisé en ce que, sur chaque tronçon de brosse (27a à 27c), les poils ou brins (5) sont répartis en touffes (52), espacées au moins angulairement.5. Device according to claim 1, characterized in that, on each brush section (27a to 27c), the bristles or strands (5) are distributed in tufts (52), spaced at least angularly.
6. Dispositif selon la revendication 1 , caractérisé en ce que les moyens de rappel de chaque tronçon de brosse (27a à 27c) sont constitués par un ressort hélicoïdal (40) ayant une longueur sensiblement égale à celle de la brosse et s'étendant longitudinalement dans un alésage formé par l'alignement de canaux (42) ménagés dans les divers tronçons formant la brosse, ce canal (42) étant réalisé dans chaque tronçon parallèlement à l'axe de rotation de la brosse et près de la périphérie du tronçon.6. Device according to claim 1, characterized in that the return means of each brush section (27a to 27c) consist of a helical spring (40) having a length substantially equal to that of the brush and extending longitudinally in a bore formed by the alignment of channels (42) formed in the various sections forming the brush, this channel (42) being produced in each section parallel to the axis of rotation of the brush and near the periphery of the section.
7. Dispositif selon la revendication 1 , caractérisé en ce qu'il comporte plusieurs brosses (4a, 4b, 4c et 16) et chacune de ces brosses est entraînée par un moteur électrique (32), indépendant de celui des autres brosses, ce moteur (32), à vitesse et sens de rotation réglables en fonctionnement, étant alimenté à travers un boîtier de commande (46) réagissant aux indications de capteurs de niveau (48), à seuil haut et à seuil bas, disposés en amont de chaque brosse et au-dessus de la zone (Z1 à Z4) d'accumulation des comprimés, de manière à réguler l'accumulation de comprimés devant chaque brosse, selon la position de cette brosse par rapport aux autres brosses.7. Device according to claim 1, characterized in that it comprises several brushes (4a, 4b, 4c and 16) and each of these brushes is driven by an electric motor (32), independent of that of the other brushes, this motor (32), with speed and direction of rotation adjustable in operation, being supplied through a control box (46) reacting to the indications of level sensors (48), at high threshold and at low threshold, arranged upstream of each brush and above the tablet accumulation zone (Z1 to Z4), so as to regulate the accumulation of tablets in front of each brush, according to the position of this brush relative to the other brushes.
8. Dispositif selon la revendication 1 , caractérisé en ce qu'il comporte au moins une barrière (160A, 160B) de comptage des comprimés (6) remplissant les alvéoles (7) d'une rangée d'alvéoles de la feuille alvéolée (2), cette barrière étant disposée en aval d'un groupe (A ou B) de plusieurs brosses (104a à 104d et 104e à 104h) et étant reliée par un circuit électrique (161) au boîtier (146) régissant la vitesse et le sens de rotation des moteurs électriques (132) entraînant chacune desdites brosses.8. Device according to claim 1, characterized in that it comprises at least one barrier (160A, 160B) for counting the tablets (6) filling the cells (7) with a row of cells of the blister sheet (2 ), this barrier being arranged downstream of a group (A or B) of several brushes (104a to 104d and 104e to 104h) and being connected by an electrical circuit (161) to the housing (146) governing the speed and the direction of rotation of the electric motors (132) driving each of said brushes.
9. Dispositif selon la revendication 1 , caractérisé en ce qu'il comporte plusieurs brosses (104a à 104d et 104e à 104h) entraînées, chacune, par un moteur électrique (132), indépendant de celui des autres brosses, ce moteur (132), à vitesse et sens de rotation réglables en fonctionnement, étant alimenté à travers un boîtier de commande (146) réagissant aux indications de capteurs de niveau (148), à seuil haut et à seuil bas, disposés en amont de chaque brosse (104a à 104d et 104e à 104h) et au- dessus de la zone d'accumulation des comprimés (6), tandis que les brosses (104a à 104d et 104e à 104h) sont réparties en deux groupes (A et B) et chacun des groupes de brosses est associé à une barrière (160A et 160B) de comptage des comprimés remplissant les alvéoles (7) d'une rangée d'alvéoles de la feuille alvéolée(2), ladite barrière (160A ou 160B) étant disposée en aval de son groupe (A ou B) de brosses et reliée par un circuit électrique(161 ) au boîtier de commande(146). 9. Device according to claim 1, characterized in that it comprises several brushes (104a to 104d and 104e to 104h) each driven by an electric motor (132), independent of that of the other brushes, this motor (132) , with speed and direction of rotation adjustable in operation, being supplied through a control unit (146) reacting to the indications of level sensors (148), at high threshold and at low threshold, arranged upstream of each brush (104a to 104d and 104e at 104h) and above the tablet accumulation area (6), while the brushes (104a to 104d and 104e at 104h) are divided into two groups (A and B) and each of the brush groups is associated with a barrier (160A and 160B) for counting the tablets filling the cells (7) with a row of cells of the blister sheet (2), said barrier (160A or 160B) being arranged in downstream of its group (A or B) of brushes and connected by an electrical circuit (161) to the control unit (146).
EP00969638A 1999-10-19 2000-10-18 Device for distributing tablets or equivalents thereof in moving honeycomb-structured sheets in a conditioning plant Expired - Lifetime EP1222113B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9913245 1999-10-19
FR9913245A FR2799727B1 (en) 1999-10-19 1999-10-19 APPARATUS FOR DISTRIBUTING TABLETS OR THE LIKE FOR PACKAGING INSTALLATION IN MOVING HAVING SHEETS
PCT/FR2000/002901 WO2001028860A1 (en) 1999-10-19 2000-10-18 Device for distributing tablets or equivalents thereof in moving honeycomb-structured sheets in a conditioning plant

Publications (2)

Publication Number Publication Date
EP1222113A1 true EP1222113A1 (en) 2002-07-17
EP1222113B1 EP1222113B1 (en) 2004-02-25

Family

ID=9551273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00969638A Expired - Lifetime EP1222113B1 (en) 1999-10-19 2000-10-18 Device for distributing tablets or equivalents thereof in moving honeycomb-structured sheets in a conditioning plant

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EP (1) EP1222113B1 (en)
AT (1) ATE260209T1 (en)
AU (1) AU7930600A (en)
DE (1) DE60008567T2 (en)
FR (1) FR2799727B1 (en)
WO (1) WO2001028860A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10302725A1 (en) * 2003-01-23 2004-08-05 Iwk Verpackungstechnik Gmbh Blister packaging machine
US9192707B2 (en) 2011-04-29 2015-11-24 Medtronic, Inc. Electrolyte and pH monitoring for fluid removal processes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724165A (en) * 1971-05-10 1973-04-03 Sauter Packaging Co Apparatus for inserting tablets into blister packages
US3921242A (en) * 1974-02-27 1975-11-25 Gaylord J Clark Window brush
US4664132A (en) * 1984-06-20 1987-05-12 Kim Schillig Motorized hair styling brush with removable dryer
FI94221C (en) * 1993-10-13 1995-08-10 Ecatec Automaatio Oy Method and apparatus for cleaning ventilation ducts
FR2785866B1 (en) * 1998-11-13 2001-01-26 Entpr De Mecanique Et D Outil BLOCK TABLET FEEDING DEVICE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0128860A1 *

Also Published As

Publication number Publication date
AU7930600A (en) 2001-04-30
FR2799727A1 (en) 2001-04-20
WO2001028860A1 (en) 2001-04-26
DE60008567D1 (en) 2004-04-01
DE60008567T2 (en) 2004-12-16
ATE260209T1 (en) 2004-03-15
FR2799727B1 (en) 2001-11-23
EP1222113B1 (en) 2004-02-25

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