EP2125265B1 - Compact metal can tapering machine for aerosol dispensers and the like - Google Patents

Compact metal can tapering machine for aerosol dispensers and the like Download PDF

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Publication number
EP2125265B1
EP2125265B1 EP08761807A EP08761807A EP2125265B1 EP 2125265 B1 EP2125265 B1 EP 2125265B1 EP 08761807 A EP08761807 A EP 08761807A EP 08761807 A EP08761807 A EP 08761807A EP 2125265 B1 EP2125265 B1 EP 2125265B1
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EP
European Patent Office
Prior art keywords
holder plate
tool
plate
base
column
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Not-in-force
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EP08761807A
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German (de)
French (fr)
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EP2125265A1 (en
Inventor
Franck Flecheux
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.)
Ball Aerosol Packaging France SAS
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Aerocan France SAS
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Publication of EP2125265A1 publication Critical patent/EP2125265A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2692—Manipulating, e.g. feeding and positioning devices; Control systems

Definitions

  • the invention relates to machines used to conify and, more generally, to shape the metal wall of containers such as aerosol cans or bottles. These machines are called "conifers”.
  • the conifers receive cylindrical blanks, generally obtained by shock-spinning or spin-drawing aluminum alloy pegs. These blanks consist of a cylindrical side wall having a first open end and a second end connected to a transverse wall forming a bottom.
  • the coniferous ones allow in the first place the conification, in several successive operations, of the open end of the side wall, initially cylindrical, to form a neck. But they also make it possible to carry out other operations, such as, with regard to the aerosol containers, the formation of an edge rolled at any end of said open end (said rolled edge being intended to receive a valve cup ) and the deformation of the bottom so that said bottom is in the form of an inverted dome, which gives the housing a better resistance to pressure.
  • the conifier is equipped with a plurality of dies which have shapes such that, brought one after the other vis-à-vis said open end and animated by a movement translationally to the blank, they impose on the wall of said blank a narrowing of stronger and stronger.
  • buffering to denote this type of shaping that is imposed by the axial displacement of a tool coming into contact with an area near the open end of the sidewall of roughing.
  • the machine is equipped with another plurality of dies which have different shapes from the first ones and which are such that, also brought one after the other opposite the open end necking of the blank and moved with a translational movement towards said blank, they impose on the zone near the edge delimiting this open end an expansion so that, this zone being dilated relative to the less stressed end, it leads to the forming said rolled edge.
  • the coniferous ones have also been equipped with tools making it possible to make shaped housings (that is to say having a non-cylindrical side wall), for example by dilating, in the zone close to the open end of the blank, the diameter of the side wall which had been previously narrowed, so that one obtains a more or less marked annular depression on the side wall of the container.
  • these machines can also be equipped with devices for locally embossing the side wall of the metal housing.
  • the coniferous generally comprises a turntable, said base plate, whose rotation is controlled step by step, comprising a plurality of n bases intended to each maintain a blank to form and a movable plate with alternating axial translation, comprising a plurality of dies, called "tool tray".
  • Each blank is held firmly, by its bottom engaged in said base, to the base plate and has its open end to the tool plate. After rotation of the plate, the blank is in front of a new matrix which is driven, by means of the tool plate, of an axial movement towards the said open end, comes into contact therewith and imposes on it an additional increment of deformation.
  • FIGS 1 and 2 schematically represent a coniferous conventional, as can be seen illustrated elsewhere in the document EP 0 275 369 (FRATTINI SpA) or in the document EP 1 531 017 (ENVASES METALURGICOS of ALAVA, SA).
  • the machine 100 preferably comprises at least two actuators (not shown) acting in a coordinated manner, one in rotations (R) step by step and the other in alternating translation movement (T).
  • actuator is meant the association of a source of motive power and a mechanical system which transforms said motive power into a given precise movement.
  • the first actuator is a rotational motor in continuous rotation associated with a cam indexer which converts the continuous rotation into a series of rotations (R) each corresponding to a fraction of a turn of the base plate.
  • the second actuator is for example a rotational motor in continuous rotation associated with another type of indexer or a connecting rod - crankshaft system.
  • actuators are integral with a frame 110 which supports a horizontal column 115 which supports a base plate 120 and a tool plate 130.
  • the function "support column” exerted by the frame is shown schematically by the ring 105
  • the tool plate 130 is integral with said column which is driven, by a first actuator, an alternating axial translational movement (T).
  • the base plate 120 rotates, through a second actuator, about the axis 101 of said column.
  • the driving power source of the first actuator is the same as that of the second actuator.
  • the blanks 10 are brought by means of a first transfer means 20 near the machine 100 and are then placed on the base plate 120 by means of a second transfer means comprising a mechanism type star wheel, here not shown.
  • the base plate 120 has n bases 121 regularly distributed over the circumference, n being an integer preferably multiple of 4, preferably equal to 12, 16, 20 or 24, or more.
  • the tool plate 130 also has n positions on which it is possible to fix a die 131 facing a base or any other tool capable of acting on the housing blank by translation towards said draft. Each of these positions corresponds to a workstation.
  • the tool plate 130 Once the tool plate 130 has been moved towards the base plate 120 to deform the open ends 11 of the blanks 10, it is moved in a counter-clockwise direction and, during this retreating movement, the plate base holder 120 is rotated by an angle 2 ⁇ / n of so that each base is found in front of a new matrix on the tool tray.
  • the cycle starts again: the tool plate 130 is moved towards the base plate 120 to deform the open ends of the casing blanks, each die or tool being opposite the blank which was previously at a relative angular position shifted by - 2n / n, etc. ...
  • the blanks are thus progressively deformed by the sequential meeting of the dies.
  • the latter When the final shape of the housing 15 is obtained, the latter is ejected from the base, and with a third transfer means (here not shown), preferably a star wheel, it is transported by a fourth transfer means 30 to a station packaging or completion.
  • a third transfer means here not shown, preferably a star wheel
  • the cantilever of the tool holder is important and requires the use of a column as squat as possible.
  • Other machine designs provide for example an extension of the frame beyond the tool plate, provided with a bearing supporting the end of the column which itself extends beyond the tool tray.
  • the travel of the tool plate 130 determines the axial "depth" on which a deformation can be imposed on the side wall of a housing. It also has a direct influence on the production rate: the longer it is, the more difficult it is to reach, due to the inertia of the tool tray, the accelerations and decelerations necessary to maintain an acceptable production rate. .
  • the precasters have a structure similar to that of the classic conifiers but, because of a greater stroke (amplitude of the translational movement), they are more limited in production rates and should be mounted in parallel if one wants to maintain the productivity of the line reached elsewhere for the "classic" boxes.
  • the advocifiers are only used if the shape of the box requires it. However, they must be able to be quickly integrated into the production line, which requires a lot of space. For example, a new manufacturing line that takes into account the possibilities of deep-shaping must be lengthened by 15 m compared to a conventional manufacturing line, which results in a lengthening of the manufacturing hall and a significant increase in associated investments.
  • the applicant has therefore sought a solution avoiding the lengthening of manufacturing lines and the resulting technical, economic and financial disadvantages.
  • the positions of the n tool recesses of one side of the tool holder may coincide with the positions of the n housings of the other face but, advantageously, these are shifted by an angle ⁇ / n so as to be able to place , at the right of a given tool and on the opposite face of the tool plate, a mechanical support, preferably a reinforcing rib, which allows said tool to better withstand the repeated mechanical shocks that it undergoes during tampons.
  • the second base-carrier plate obviously has a set of n bases shifted by ⁇ / n with respect to the set of n bases of the first base-carrier plate.
  • the tool plate is integral with said column which is driven by the second actuator with an alternating axial translation movement.
  • the frame of the machine extends beyond the second tool plate and is provided with a bearing supporting the end of the column which itself extends beyond said second tool plate.
  • the rotations of the two base-bearing plates and the alternating translation of the tool-carrying plate are periodic movements which follow the same frequency, the duration of a cycle corresponding on the one hand to the round-trip of the carrier plate. tool and secondly to the sum of the time taken to perform the rotation of one or the other base-bearing plate 2 ⁇ / n, including the acceleration and deceleration phases of said plateau, and the working time , including the buffering time itself and, at least partially, the approach and removal phases of the tool.
  • the movements of the trays are synchronized so that the ends of the trajectory of the tool plate are reached when the base plate concerned by the buffering is in the middle of its immobilization phase.
  • the second actuator and the third actuator are driven by the same rotating motor in continuous rotation.
  • the second actuator is associated with a first cam indexer which transforms the continuous rotation into a succession of rotations each corresponding to a fraction of a turn of the base-plate.
  • the third actuator is also associated with a second cam indexer which transforms the continuous rotation into a series of rotations each corresponding to a fraction of a turn of the base-plate, but the second indexer is shifted relative to the first indexer so that the buffering position of the tools on one side of the tool holder corresponds to the rest position of the tools on the other side.
  • the time offset must therefore correspond to half the duration of a cycle
  • the first actuator is moved by the same rotating motor in continuous rotation. It is for example associated with another type of indexer or a crankshaft-crankshaft system, the latter being coupled to the engine so that the crankshaft makes a complete turn when the base plates are one-nth of a turn.
  • the second base-carrier plate rotates through the third actuator around the axis of said column. It rotates, with a time offset corresponding to half a cycle, in the same direction of rotation (identical rotational speed vectors) as the first tool plate (first configuration), either by means of suitable couplings or in an opposite direction of rotation (opposite rotational speed vectors) (second configuration).
  • this machine offers twice as many workstations as a conifous classic because the same movement of the column serves both the distance of the tools from one side of the tool holder and the activating (preferably buffering) tools on the other side of the tool holder.
  • the increase in inertias resulting from the doubling of the number of tools to be placed on the tool-holder tray certainly results in an increase in the power necessary to set the said tool-holder plate in motion, but this does not necessarily translate into a slowing down.
  • the coniferous allows to work on a flow of boxes double that of coniferous or conventional precursors. This results in a machine whose capacity in speed of conification is doubled.
  • the housings in the last position of the first base-plate are ejected from their base, and by means of a transfer means comprising for example a 180 ° turning mechanism of the housing surrounded by mechanisms of the type star wheel, are re-directed to the second base-plate to complete their formatting.
  • the capacity in speed is not increased but the capacity in number of tools, thus in possible increments of deformation, is doubled.
  • the exit direction of the housings is different from the exit direction of a conventional line, which allows to install the finishing equipment of the housings not at the end of line but "upstream" of the coniferous slightly offset, which advantageously reduces the length of the production line.
  • the function "support of the column" exerted by the frame is achieved by means of a bearing 205 consisting of a bronze ring which participates in guiding the base-carrier trays.
  • Said machine also comprises a second base-plate 240, placed so that it frames with the first base-plate 220 the tool plate 230, also bearing n bases 241 regularly distributed over its circumference, and animated, using a third actuator (not shown), a discontinuous rotational movement (R2, R'2) around the axis 201 of the column 215, rotating step by step, by a step of 2 ⁇ / n.
  • the tool plate 230 also comprises, on its side facing the second base-plate 240, n housings making it possible to fix a matrix 232 - or any other tool capable of deforming the transverse wall of a blank - in the form of screws. to the bases of the second base plate 240.
  • the tool plate 230 is integral with the column 215 which is driven by the first actuator of an alternating axial translation movement.
  • An extension 211 of the frame, extending beyond the second tool plate 240, is provided with a bearing supporting the end of the column 216 which itself extends beyond said second tool plate 240.
  • the 24 positions of the tools (231) on one face are shifted by ⁇ / 24 relative to the 24 positions of the tools (232) on the other face so as to be able to place, at the right of a given tool 231 (respectively 232) and on the opposite face of said tool plate, a mechanical support, in this case a reinforcing rib 236 (respectively 237), which allows said tool to better withstand the repeated mechanical shocks it undergoes during buffering.
  • the second base-plate 240 also has a set of 24 bases offset by ⁇ / 24 with respect to all 24 bases of the first base-plate 220.
  • the set of actuators is associated with the same motor in continuous rotation.
  • the first actuator corresponds to the combination of a rotating engine in continuous rotation with a mechanical crankshaft - crankshaft system, the latter being coupled to the engine so that the crankshaft makes a complete revolution when the base plates make a nth of tower.
  • the second actuator corresponds to the association of the same motor in continuous rotation with a first cam indexer which transforms the continuous rotation into a series of rotations each corresponding to a fraction of a turn 2 ⁇ / n (in this case ⁇ / 12) of first base plate 220.
  • the third actuator also corresponds to the association of the same motor in continuous rotation with a second cam indexer which transforms the continuous rotation into a series of rotations each corresponding to a fraction of a turn 2 ⁇ / n (in the occurrence ⁇ / 12) of the second base plate 240.
  • the second indexer is offset relative to the first indexer so that the buffering position of the tools of a face of the tool holder corresponds to the position of rest of the tools on the other side.
  • the time offset must therefore correspond to half the duration of a cycle.
  • the figure 4 schematically illustrates the cycles associated with the movement (R1) of the first base plate 220, the movement (T) of the tool plate 230 and the movement (R2) of the second base plate 240.
  • the duration c of a cycle corresponds to the sum of the time r put to perform a rotation of ⁇ / 12, including the acceleration (I) and deceleration (II) phases of said plateau and working time w, including the actual buffering time and, at least partially, the approaches a and distance e of the tool.
  • the second base-plate 240 follows rotations of ⁇ / 12, made step by step, with a time shift of c / 2 relative to the first base-plate 220.
  • the tool-plate 230 follows an alternating translational movement such that each end of the trajectory E1 (respectively E2) is reached in the middle of the immobilization phase F1 (respectively F2) of the base plate 220 (respectively 240) associated with said end.
  • each tool (231, 232) is placed on one face of the tool-holder plate 230 with an axial "height" such that the tool can reach the open end of the blank at the desired position Tc. difference between this position Tc and that of the corresponding trajectory end (E1 on the figure 4 ), representing the axial working stroke of the tool which is dedicated to the deformation of the zone of the axisymmetrical wall which is close to the open end of the blank.
  • the second base plate 240 turns - with a time offset corresponding to half a cycle - in the same direction of rotation as the first tool plate (first configuration, figure 3 ), either by means of suitable couplings or in an opposite direction of rotation (second configuration, figure 5 ).
  • the blanks coming from the production line are separated into two streams of the same intensity: the blanks 10a are placed on the first base-plate 220 and the blanks 10b are placed on the second base-plate 240.
  • the plates base carriers 220 and 240 have 24 bases 121 regularly distributed around their circumference.
  • the tool plate 230 has on each of these faces 24 positions on which it is possible to fix a matrix 231, 232 vis-à-vis a base or any other tool capable of acting on the housing blanks by buffering. Each of these positions corresponds to a workstation.
  • the blanks 10a (respectively 10b) are progressively deformed by the meeting of the matrices 231 (respectively 232) which succeed one another. When the last station is reached, the housings are ejected from their base, possibly grouped, and transported to packing stations or completion.
  • the coniferous thus makes it possible to work on a flow of housings double of that of the coniferous or preconceived classics. This results in a machine whose capacity in speed of conification is doubled.
  • the blanks 21 from the production line are put in place on the first base plate 220.
  • the base plate 220 has 24 bases 121 evenly distributed around the circumference. They are deformed progressively by the meeting of matrices 231 which succeed one another.
  • the blank 22 has a shape advantageously corresponding to a necking step located at the first quarter of the deformation path that is to be imposed.
  • the blank is ejected from the base 221, turned over and placed on a base 241 of the second base plate 240. At this stage, it may have a shape such as that illustrated by the blank 23, where the open end has undergone expansion of its diameter, so that the transverse wall has in its middle an annular depression.
  • the blank continues to be deformed progressively by the meeting of matrices 232 which succeed one another.
  • the blank 24 has a shape advantageously corresponding to a new step of narrowing of the open end, a step located approximately at the last quarter of the deformation path that one wants to impose on this case.
  • the boxes are ejected from their base 241 and transported to packing stations or completion.
  • the outlet direction of the housings is the opposite of the exit direction of a conventional line, which allows to install the finishing equipment of the housings not at the end of line but "upstream" of the coniferous, slightly staggered, which allows to have a shorter production line.
  • the invention is not limited to the embodiments of this machine, described above as an example, it encompasses all the variants.
  • the column 215 could have a non-circular section.

Abstract

The machine i.e. tapering machine (200), has a base supporting plate (240) placed and enclosed with another base supporting plate (220) and a tool supporting plate (230). The plate (240) supports bases (241) distributed on its circumference, and is animated from a discontinued rotational movement around an axis (201) of a column (215) turning step by step. The tool supporting plate has housings provided on its oriented surface towards the plate (240), where the housings fix a matrix (232) or a tool used to deform a transversal wall of a blank with respect to the bases of the plate (240).

Description

DOMAINE TECHNIQUETECHNICAL AREA

L'invention concerne les machines utilisées pour conifier et, plus généralement, pour mettre en forme la paroi métallique de récipients tels que des boîtiers aérosols ou des bouteilles. Ces machines sont appelées "conifieuses".The invention relates to machines used to conify and, more generally, to shape the metal wall of containers such as aerosol cans or bottles. These machines are called "conifers".

ETAT DE LA TECHNIQUESTATE OF THE ART

Les conifieuses reçoivent des ébauches cylindriques, en général obtenues par filage par choc ou filage-étirage de pions en alliage d'aluminium. Ces ébauches sont constituées d'une paroi latérale cylindrique ayant une première extrémité ouverte et une deuxième extrémité reliée à une paroi transversale formant un fond. Les conifieuses permettent en premier lieu la conification, en plusieurs opérations successives, de l'extrémité ouverte de la paroi latérale, initialement cylindrique, pour former un col. Mais elles permettent également de mettre en oeuvre d'autres opérations, telles que, en ce qui concerne les boîtiers aérosols, la formation d'un bord roulé en toute extrémité de ladite extrémité ouverte (ledit bord roulé étant destiné à accueillir une coupelle de valve) et la déformation du fond de sorte que ledit fond se présente sous la forme d'un dôme renversé, qui confère au boîtier une meilleure résistance à la pression.The conifers receive cylindrical blanks, generally obtained by shock-spinning or spin-drawing aluminum alloy pegs. These blanks consist of a cylindrical side wall having a first open end and a second end connected to a transverse wall forming a bottom. The coniferous ones allow in the first place the conification, in several successive operations, of the open end of the side wall, initially cylindrical, to form a neck. But they also make it possible to carry out other operations, such as, with regard to the aerosol containers, the formation of an edge rolled at any end of said open end (said rolled edge being intended to receive a valve cup ) and the deformation of the bottom so that said bottom is in the form of an inverted dome, which gives the housing a better resistance to pressure.

Pour conifier l'extrémité ouverte de la paroi latérale, la conifieuse est équipée d'une pluralité de matrices qui présentent des formes telles que, amenées les unes après les autres en vis-à-vis de ladite extrémité ouverte et animées d'un mouvement de translation vers l'ébauche, elles imposent à la paroi de ladite ébauche un rétreint de plus en plus fort. Par la suite, nous emploierons le terme "tamponnage" pour désigner ce type de mise en forme qui est imposé par le déplacement axial d'un outil arrivant au contact d'une zone située à proximité de l'extrémité ouverte de la paroi latérale de l'ébauche. Pour former le bord roulé, la machine est équipée d'une autre pluralité de matrices qui ont des formes différentes des premières et qui sont telles que, également amenées les unes après les autres en vis-à-vis de l'extrémité ouverte rétreinte de l'ébauche et animées d'un mouvement de translation vers ladite ébauche, elles imposent à la zone proche du bord délimitant cette extrémité ouverte une expansion de sorte que, cette zone étant dilatée par rapport à l'extrémité moins sollicitée, on aboutit à la formation dudit bord roulé. Optionnellement, depuis quelques temps, les conifieuses sont également équipées d'outils permettant de réaliser des boîtiers de forme, (c'est-à-dire présentant une paroi latérale non cylindrique), par exemple en dilatant, dans la zone proche de l'extrémité ouverte de l'ébauche, le diamètre de la paroi latérale qui avait été auparavant rétreinte, de sorte que l'on obtient une dépression annulaire plus ou moins marquée sur la paroi latérale du récipient. Enfin, dernièrement, ces machines peuvent également être équipées de dispositifs permettant d'embosser localement la paroi latérale du boîtier métallique.To conify the open end of the side wall, the conifier is equipped with a plurality of dies which have shapes such that, brought one after the other vis-à-vis said open end and animated by a movement translationally to the blank, they impose on the wall of said blank a narrowing of stronger and stronger. Next, we will use the term "buffering" to denote this type of shaping that is imposed by the axial displacement of a tool coming into contact with an area near the open end of the sidewall of roughing. To form the rolled edge, the machine is equipped with another plurality of dies which have different shapes from the first ones and which are such that, also brought one after the other opposite the open end necking of the blank and moved with a translational movement towards said blank, they impose on the zone near the edge delimiting this open end an expansion so that, this zone being dilated relative to the less stressed end, it leads to the forming said rolled edge. Optionally, for some time now, the coniferous ones have also been equipped with tools making it possible to make shaped housings (that is to say having a non-cylindrical side wall), for example by dilating, in the zone close to the open end of the blank, the diameter of the side wall which had been previously narrowed, so that one obtains a more or less marked annular depression on the side wall of the container. Finally, lately, these machines can also be equipped with devices for locally embossing the side wall of the metal housing.

La plupart de ces déformations sont effectuées progressivement et, pour cette raison, la conifieuse comprend en général un plateau rotatif, dit plateau porte-bases, dont la rotation est commandée pas à pas, comportant une pluralité de n bases destinées à maintenir chacune une ébauche à mettre en forme et un plateau mobile à translation axiale alternée, comportant une pluralité de matrices, appelé "plateau porte-outils". Chaque ébauche est retenue fermement, par son fond engagé dans ladite base, au plateau porte-bases et présente son extrémité ouverte vers le plateau porte-outils. Après rotation du plateau, l'ébauche se trouve en face d'une nouvelle matrice qui est animée, par le biais du plateau porte-outils, d'un mouvement axial en direction de la dite extrémité ouverte, arrive en contact avec celle-ci et lui impose un incrément de déformation supplémentaire.Most of these deformations are carried out gradually and, for this reason, the coniferous generally comprises a turntable, said base plate, whose rotation is controlled step by step, comprising a plurality of n bases intended to each maintain a blank to form and a movable plate with alternating axial translation, comprising a plurality of dies, called "tool tray". Each blank is held firmly, by its bottom engaged in said base, to the base plate and has its open end to the tool plate. After rotation of the plate, the blank is in front of a new matrix which is driven, by means of the tool plate, of an axial movement towards the said open end, comes into contact therewith and imposes on it an additional increment of deformation.

Les figures 1 et 2 représentent schématiquement une conifieuse conventionnelle, telle qu'on peut la voir illustrée par ailleurs dans le document EP 0 275 369 (FRATTINI S.p.A.) ou encore dans le document EP 1 531 017 (ENVASES METALURGICOS de ALAVA, SA).The Figures 1 and 2 schematically represent a coniferous conventional, as can be seen illustrated elsewhere in the document EP 0 275 369 (FRATTINI SpA) or in the document EP 1 531 017 (ENVASES METALURGICOS of ALAVA, SA).

La machine 100 comprend de préférence au moins deux actionneurs (non représentés) agissant de façon coordonnée l'un en rotations (R) pas à pas et l'autre en mouvement de translation alternée (T). Par le terme "actionneur", on entend l'association d'une source d'énergie motrice et d'un système mécanique qui transforme ladite énergie motrice en un mouvement précis donné. Par exempte, le premier actionneur est un moteur rotatif en rotation continue associé à un indexeur à cames qui transforme la rotation continue en une suite de rotations (R) correspondant chacune à une fraction de tour du plateau porte-bases. Le second actionneur est par exemple un moteur rotatif en rotation continue associé à un autre type d'indexeur ou à un système bielle - vilebrequin. Ces actionneurs sont solidaires d'un bâti 110 qui supporte une colonne horizontale 115 qui supporte un plateau porte-bases 120 et un plateau porte-outils 130. La fonction "support de la colonne" exercée par le bâti est ici schématisée par la couronne 105. Le plateau porte-outils 130 est solidaire de ladite colonne qui est animée, grâce à un premier actionneur, d'un mouvement de translation axiale alternée (T). Le plateau porte-bases 120 tourne, grâce à un deuxième actionneur, autour de l'axe 101 de ladite colonne. De préférence, pour faciliter la synchronisation entre le mouvement de rotation discontinue pas à pas et le mouvement en translation alternée, la source d'énergie motrice du premier actionneur est la même que celle du deuxième actionneur.The machine 100 preferably comprises at least two actuators (not shown) acting in a coordinated manner, one in rotations (R) step by step and the other in alternating translation movement (T). By the term "actuator" is meant the association of a source of motive power and a mechanical system which transforms said motive power into a given precise movement. For example, the first actuator is a rotational motor in continuous rotation associated with a cam indexer which converts the continuous rotation into a series of rotations (R) each corresponding to a fraction of a turn of the base plate. The second actuator is for example a rotational motor in continuous rotation associated with another type of indexer or a connecting rod - crankshaft system. These actuators are integral with a frame 110 which supports a horizontal column 115 which supports a base plate 120 and a tool plate 130. The function "support column" exerted by the frame is shown schematically by the ring 105 The tool plate 130 is integral with said column which is driven, by a first actuator, an alternating axial translational movement (T). The base plate 120 rotates, through a second actuator, about the axis 101 of said column. Preferably, to facilitate the synchronization between the discontinuous stepwise rotation movement and the alternating translation movement, the driving power source of the first actuator is the same as that of the second actuator.

Les ébauches 10 sont amenées à l'aide d'un premier moyen de transfert 20 à proximité de la machine 100 puis sont mises en place sur le plateau porte-bases 120 à l'aide d'un deuxième moyen de transfert comprenant un mécanisme de type roue étoilée, ici non représenté. Le plateau porte-bases 120 présente n bases 121 régulièrement réparties sur la circonférence, n étant un entier de préférence multiple de 4, avantageusement égal à 12, 16, 20 ou 24, voire plus. Le plateau porte-outils 130 présente également n positions sur lesquelles il est possible de fixer une matrice 131 en vis-à-vis d'une base ou tout autre outil capable d'agir sur l'ébauche de boîtier par translation en direction de ladite ébauche. Chacune de ces positions correspond à un poste de travail. Une fois que le plateau porte-outils 130 a été déplacé en direction du plateau porte-bases 120 pour déformer les extrémités ouvertes 11 des ébauches 10, il est animé d'un mouvement en sens contraire et, durant ce mouvement de recul, le plateau porte-bases 120 est tourné d'un angle 2π/n de sorte que chaque base se retrouve en face d'une nouvelle matrice sur le plateau porte-outils. Le cycle recommence: le plateau porte-outils 130 est déplacé en direction du plateau porte-bases 120 pour déformer les extrémités ouvertes des ébauches de boîtier, chaque matrice ou outil se trouvant en vis-à-vis de l'ébauche qui se trouvait auparavant à une position angulaire relative décalée de - 2n/n, etc... Les ébauches sont ainsi déformées progressivement par la rencontre séquentielle des matrices.The blanks 10 are brought by means of a first transfer means 20 near the machine 100 and are then placed on the base plate 120 by means of a second transfer means comprising a mechanism type star wheel, here not shown. The base plate 120 has n bases 121 regularly distributed over the circumference, n being an integer preferably multiple of 4, preferably equal to 12, 16, 20 or 24, or more. The tool plate 130 also has n positions on which it is possible to fix a die 131 facing a base or any other tool capable of acting on the housing blank by translation towards said draft. Each of these positions corresponds to a workstation. Once the tool plate 130 has been moved towards the base plate 120 to deform the open ends 11 of the blanks 10, it is moved in a counter-clockwise direction and, during this retreating movement, the plate base holder 120 is rotated by an angle 2π / n of so that each base is found in front of a new matrix on the tool tray. The cycle starts again: the tool plate 130 is moved towards the base plate 120 to deform the open ends of the casing blanks, each die or tool being opposite the blank which was previously at a relative angular position shifted by - 2n / n, etc. ... The blanks are thus progressively deformed by the sequential meeting of the dies.

Lorsque la forme finale du boîtier 15 est obtenue, ce dernier est éjecté de la base, et moyennant un troisième moyen de transfert (ici non représenté), de préférence une roue étoilée, il est transporté par un quatrième moyen de transfert 30 vers un poste d'emballage ou de parachèvement.When the final shape of the housing 15 is obtained, the latter is ejected from the base, and with a third transfer means (here not shown), preferably a star wheel, it is transported by a fourth transfer means 30 to a station packaging or completion.

Pour obtenir la déformation voulue par tamponnage, il faut un positionnement précis des outils en vis-à-vis des ébauches, ce qui impose que la colonne soit particulièrement rigide. Dans la solution mécanique illustrée en figure 2, le porte-à-faux du porte-outils est important et impose l'emploi d'une colonne aussi trapue que possible. D'autres conceptions de machines prévoient par exemple une prolongation du bâti au-delà du plateau porte-outil, munie d'un palier supportant l'extrémité de la colonne qui elle-même s'étend au-delà du plateau porte-outils.To obtain the desired deformation by buffering, precise positioning of the tools vis-à-vis the blanks is required, which requires that the column is particularly rigid. In the mechanical solution illustrated in figure 2 , the cantilever of the tool holder is important and requires the use of a column as squat as possible. Other machine designs provide for example an extension of the frame beyond the tool plate, provided with a bearing supporting the end of the column which itself extends beyond the tool tray.

La course du plateau porte-outils 130 détermine la "profondeur" axiale sur laquelle une déformation peut être imposée sur la paroi latérale d'un boîtier. Elle influe d'autre part directement sur la cadence de production: plus elle est longue, plus il devient difficile d'atteindre, en raison de l'inertie du plateau porte-outils, les accélérations et décélérations nécessaires pour maintenir une cadence de production acceptable.The travel of the tool plate 130 determines the axial "depth" on which a deformation can be imposed on the side wall of a housing. It also has a direct influence on the production rate: the longer it is, the more difficult it is to reach, due to the inertia of the tool tray, the accelerations and decelerations necessary to maintain an acceptable production rate. .

La tendance actuelle, illustrée par exemple dans le document WO2006/048056 (FRATTINI ), consiste à déformer la paroi cylindrique aussi profondément que possible (formation de cols en forme d'ogive, fabrication de bouteilles à grand goulot ou encore formation, par exemple par embossage, de reliefs, annulaires ou non, à proximité du fond du boîtier). Cette tendance à la mise en forme profonde ou "deep-shaping" conduit à aménager un nombre de plus en plus grand de postes de déformation sur les plateaux porte-bases et porte-outils. Mais, même si on choisit un nombre n de postes supérieur à 24, une seule machine ne suffit en général plus pour obtenir la forme finale désirée, de sorte que l'on est obligé actuellement de prévoir sur les nouvelles lignes de fabrication, une zone en amont des conifieuses, apte à recevoir des machines supplémentaire appelées "pré-conifieuses".The current trend, illustrated for example in the document WO2006 / 048056 (FRATTINI ), consists in deforming the cylindrical wall as deeply as possible (formation of ogival-shaped necks, manufacture of bottles with a large neck or formation, for example by embossing, reliefs, annular or not, close to the bottom of the case) ). This tendency to deep shaping or "deep-shaping" leads to the development of an increasing number of deformation stations on the base-bearing trays and toolholders. But, even if we choose a number n of positions greater than 24, a single machine is generally not sufficient to obtain the desired final shape, so that we are currently obliged to provide on the new production lines, a zone upstream coniferous, able to receive additional machines called "pre-conifious".

PROBLEME POSEPROBLEM

Les préconifieuses ont une structure semblable à celle des conifieuses classiques mais, en raison d'une course (amplitude du mouvement de translation alternée) plus grande, elles sont plus limitées en cadences de fabrication et devraient être montées à plusieurs en parallèle si l'on veut maintenir la productivité de la ligne atteinte par ailleurs pour les boîtiers "classiques". Pour ne pas pénaliser l'ensemble de la production, les préconifieuses ne sont utilisées que si la forme du boîtier l'exige. Par contre, elles doivent pouvoir être intégrées rapidement à la chaîne de fabrication, ce qui impose de leur consacrer beaucoup de place. A titre d'exemple, une nouvelle ligne de fabrication prenant en compte les possibilités de deep-shaping doit être allongée de 15 m par rapport à une ligne de fabrication classique, ce qui entraîne un allongement du hall de fabrication et une augmentation non négligeable des investissements associés.The precasters have a structure similar to that of the classic conifiers but, because of a greater stroke (amplitude of the translational movement), they are more limited in production rates and should be mounted in parallel if one wants to maintain the productivity of the line reached elsewhere for the "classic" boxes. In order not to penalize the whole of the production, the advocifiers are only used if the shape of the box requires it. However, they must be able to be quickly integrated into the production line, which requires a lot of space. For example, a new manufacturing line that takes into account the possibilities of deep-shaping must be lengthened by 15 m compared to a conventional manufacturing line, which results in a lengthening of the manufacturing hall and a significant increase in associated investments.

La demanderesse a donc cherché une solution évitant l'allongement des lignes de fabrication et les inconvénients techniques, économiques et financiers qui en résultent.The applicant has therefore sought a solution avoiding the lengthening of manufacturing lines and the resulting technical, economic and financial disadvantages.

OBJET DE L'INVENTIONOBJECT OF THE INVENTION

Un premier objet selon l'invention est une machine pour mettre en forme la paroi, en particulier latérale, d'un récipient métallique, tel qu'un boîtier pour distributeur aérosol ou une bouteille, comprenant:

  • un bâti supportant une colonne animée, à l'aide d'un premier actionneur, d'un mouvement de translation alternée;
  • un premier plateau porte-bases, s'étendant perpendiculairement à ladite colonne, portant n bases régulièrement réparties sur sa circonférence, n étant un entier de préférence multiple de 4, avantageusement égal à 12, 16, 20, 24 ou 28, et animé, à l'aide d'un deuxième actionneur, d'un mouvement de rotation discontinu autour de l'axe de ladite colonne, c'est-à-dire tournant pas à pas, par pas d'un angle de 2π/n, lesdites bases étant destinées à recueillir les ébauches des récipients métalliques
  • un plateau porte-outils, s'étendant perpendiculairement à ladite colonne, solidaire de ladite colonne, comprenant, sur sa face orientée vers ledit premier plateau porte-bases, n logements permettant de fixer une matrice - ou tout autre outil apte déformer la paroi transversale d'une ébauche - en vis-à-vis des bases dudit premier plateau porte-bases,
caractérisée en ce que
ladite machine comprend également un deuxième plateau porte-bases, placé de telle sorte qu'il encadre avec le premier plateau porte-bases le plateau porte-outils, portant également n bases régulièrement réparties sur sa circonférence, et animé, à l'aide d'un troisième actionneur, d'un mouvement de rotation discontinu autour de l'axe de ladite colonne, c'est-à-dire tournant pas à pas, par pas d'un angle de 2π/n,
et en ce que ledit plateau porte-outils comprend également, sur sa face orientée vers ledit deuxième plateau porte-bases, n logements permettant de fixer une matrice - ou tout autre outil apte à déformer la paroi transversale d'une ébauche - en vis-à-vis des bases dudit deuxième plateau porte-bases.A first object according to the invention is a machine for shaping the wall, in particular the side wall, of a metal container, such as an aerosol dispenser housing or a bottle, comprising:
  • a frame supporting an animated column, with the aid of a first actuator, of an alternating translational movement;
  • a first base-carrier plate, extending perpendicularly to said column, bearing n regularly distributed bases on its circumference, n being an integer preferably multiple of 4, advantageously equal to 12, 16, 20, 24 or 28, and animated, with the aid of a second actuator, a discontinuous rotational movement about the axis of said column, that is to say, rotating step by step, by step an angle of 2π / n, said bases being intended to collect the blanks of the metal containers
  • a tool-carrying tray, extending perpendicular to said column, integral with said column, comprising, on its face facing said first base-plate, n housings for fixing a matrix - or any other tool able to deform the transverse wall of a blank - in front of the bases of said first base-plate,
characterized in that
said machine also comprises a second base-holder plate, placed in such a way that it frames, with the first base-plate, the tool-carrying tray, also bearing n bases evenly distributed over its circumference, and animated, with the aid of a third actuator, with a discontinuous rotational movement around the axis of said column, that is to say, rotating stepwise, in steps of an angle of 2π / n,
and in that said tool-carrying plate also comprises, on its face facing said second base-support plate, n housings making it possible to fix a matrix - or any other tool capable of deforming the transverse wall of a blank - in view of with respect to the bases of said second base plate.

Les positions des n logements d'outils d'une face du porte-outils peuvent coïncider avec les positions des n logements de l'autre face mais, avantageusement, celles-ci sont décalées d'un angle π/n de façon à pouvoir placer, au droit d'un outil donné et sur la face opposée du plateau porte-outils, un appui mécanique, de préférence une nervure de renfort, qui permet audit outil de mieux résister aux chocs mécaniques répétés qu'il subit lors des tamponnages. Dans ce cas, le deuxième plateau porte-bases présente bien évidemment un ensemble de n bases décalé de π/n par rapport à l'ensemble des n bases du premier plateau porte-bases.The positions of the n tool recesses of one side of the tool holder may coincide with the positions of the n housings of the other face but, advantageously, these are shifted by an angle π / n so as to be able to place , at the right of a given tool and on the opposite face of the tool plate, a mechanical support, preferably a reinforcing rib, which allows said tool to better withstand the repeated mechanical shocks that it undergoes during tampons. In this case, the second base-carrier plate obviously has a set of n bases shifted by π / n with respect to the set of n bases of the first base-carrier plate.

Le plateau porte-outils est solidaire de ladite colonne qui est animée grâce au second actionneur d'un mouvement de translation axiale alternée. Avantageusement, le bâti de la machine s'étend au-delà du deuxième plateau porte-outils et est muni d'un palier supportant l'extrémité de la colonne qui elle-même s'étend au-delà dudit deuxième plateau porte-outils.The tool plate is integral with said column which is driven by the second actuator with an alternating axial translation movement. Advantageously, the frame of the machine extends beyond the second tool plate and is provided with a bearing supporting the end of the column which itself extends beyond said second tool plate.

Avantageusement, les rotations des deux plateaux porte-bases et la translation alternée du plateau porte-outils sont des mouvements périodiques qui suivent la même fréquence, la durée d'un cycle correspondant d'une part à l'aller-retour du plateau porte-outil et d'autre part à la somme du temps mis pour effectuer la rotation de l'un ou l'autre plateau porte-bases de 2π/n, incluant les phases d'accélération et de décélération dudit plateau, et du temps de travail, incluant le temps de tamponnage proprement dit et, au moins partiellement, les phases d'approche et d'éloignement de l'outil. Avantageusement, les mouvements des plateaux sont synchronisés de telle sorte que les extrémités de la trajectoire du plateau porte-outils sont atteintes lorsque le plateau porte-bases concerné par le tamponnage se trouve au milieu de sa phase d'immobilisation.Advantageously, the rotations of the two base-bearing plates and the alternating translation of the tool-carrying plate are periodic movements which follow the same frequency, the duration of a cycle corresponding on the one hand to the round-trip of the carrier plate. tool and secondly to the sum of the time taken to perform the rotation of one or the other base-bearing plate 2π / n, including the acceleration and deceleration phases of said plateau, and the working time , including the buffering time itself and, at least partially, the approach and removal phases of the tool. Advantageously, the movements of the trays are synchronized so that the ends of the trajectory of the tool plate are reached when the base plate concerned by the buffering is in the middle of its immobilization phase.

De préférence, le deuxième actionneur et le troisième actionneur sont mus par un même moteur rotatif en rotation continue. Le deuxième actionneur est associé à un premier indexeur à cames qui transforme la rotation continue en une suite de rotations correspondant chacune à une fraction de tour du plateau porte-bases. Le troisième actionneur est également associé à un deuxième indexeur à cames qui transforme la rotation continue en une suite de rotations correspondant chacune à une fraction de tour du plateau porte-bases mais le deuxième indexeur est décalé par rapport au premier indexeur de façon à ce que la position de tamponnage des outils d'une face du porte-outils corresponde à la position de repos des outils de l'autre face. Le décalage temporel doit donc correspondre à la moitié de la durée d'un cycle,Preferably, the second actuator and the third actuator are driven by the same rotating motor in continuous rotation. The second actuator is associated with a first cam indexer which transforms the continuous rotation into a succession of rotations each corresponding to a fraction of a turn of the base-plate. The third actuator is also associated with a second cam indexer which transforms the continuous rotation into a series of rotations each corresponding to a fraction of a turn of the base-plate, but the second indexer is shifted relative to the first indexer so that the buffering position of the tools on one side of the tool holder corresponds to the rest position of the tools on the other side. The time offset must therefore correspond to half the duration of a cycle,

De préférence encore, le premier actionneur est mû par le même moteur rotatif en rotation continue. Il est par exemple associé à un autre type d'indexeur ou à un système bielle - vilebrequin, ce dernier étant couplé au moteur de telle sorte que le vilebrequin fait un tour complet lorsque les plateaux porte-bases font un nième de tour.More preferably, the first actuator is moved by the same rotating motor in continuous rotation. It is for example associated with another type of indexer or a crankshaft-crankshaft system, the latter being coupled to the engine so that the crankshaft makes a complete turn when the base plates are one-nth of a turn.

Le deuxième plateau porte-bases tourne grâce au troisième actionneur autour de l'axe de ladite colonne. Il tourne, avec un décalage temporel correspondant à un demi-cycle, soit dans le même sens de rotation (vecteurs de vitesse de rotation identiques) que le premier plateau porte-outils (première configuration), soit, par le biais d'accouplements adaptés, soit dans un sens de rotation opposé (vecteurs de vitesse de rotation opposés) (deuxième configuration).The second base-carrier plate rotates through the third actuator around the axis of said column. It rotates, with a time offset corresponding to half a cycle, in the same direction of rotation (identical rotational speed vectors) as the first tool plate (first configuration), either by means of suitable couplings or in an opposite direction of rotation (opposite rotational speed vectors) (second configuration).

Quel que soit le fonctionnement choisi, cette machine offre deux fois plus de stations de travail qu'une conifieuse classique car le même mouvement de la colonne sert à la fois à l'éloignement des outils d'une face du porte-outils et à la mise en action (de préférence par tamponnage) des outils de l'autre face du porte-outil. L'augmentation des inerties résultant du doublement du nombre d'outils à placer sur le plateau porte-outils se traduit certes par une augmentation de la puissance nécessaire pour mettre en mouvement ledit plateau porte-outil mais ceci ne se traduit pas nécessairement par un ralentissement de la cadence, la décélération du plateau porte-outil, nécessaire pour le relancer dans l'autre sens, étant facilitée par la résistance occasionnée par la déformation - de préférence par tamponnage - des extrémités d'ébauche, et ceci dans les deux sens.Whatever the chosen operation, this machine offers twice as many workstations as a conifous classic because the same movement of the column serves both the distance of the tools from one side of the tool holder and the activating (preferably buffering) tools on the other side of the tool holder. The increase in inertias resulting from the doubling of the number of tools to be placed on the tool-holder tray certainly results in an increase in the power necessary to set the said tool-holder plate in motion, but this does not necessarily translate into a slowing down. the cadence, the deceleration of the tool tray, necessary to restart in the other direction, being facilitated by the resistance caused by the deformation - preferably by stamping - the ends of the blank, and this in both directions.

Dans le cas de la première configuration envisagée, la conifieuse permet de travailler sur un flux de boîtiers double de celui des conifieuses ou préconifieuses classiques. Il en résulte une machine dont la capacité en vitesse de conification est doublée.In the case of the first configuration envisaged, the coniferous allows to work on a flow of boxes double that of coniferous or conventional precursors. This results in a machine whose capacity in speed of conification is doubled.

Dans le cas de la deuxième configuration envisagée, les boîtiers en dernière position du premier plateau porte-bases sont éjectés de leur base, et moyennant un moyen de transfert comprenant par exemple un mécanisme de retournement à 180° du boîtier entouré par des mécanismes de type roue étoilée, sont re-dirigés vers le deuxième plateau porte-bases pour parachever leur mise en forme. La capacité en vitesse n'est pas augmentée mais la capacité en nombre d'outils, donc en incréments de déformation possibles, est doublée. Dans cette deuxième configuration, la direction de sortie des boîtiers est différente de la direction de sortie d'une ligne classique, ce qui permet d'installer les équipements de parachèvement des boîtiers non pas en bout de ligne mais en "amont" de la conifieuse, légèrement décalés, ce qui réduit avantageusement la longueur de la ligne de fabrication.In the case of the second configuration envisaged, the housings in the last position of the first base-plate are ejected from their base, and by means of a transfer means comprising for example a 180 ° turning mechanism of the housing surrounded by mechanisms of the type star wheel, are re-directed to the second base-plate to complete their formatting. The capacity in speed is not increased but the capacity in number of tools, thus in possible increments of deformation, is doubled. In this second configuration, the exit direction of the housings is different from the exit direction of a conventional line, which allows to install the finishing equipment of the housings not at the end of line but "upstream" of the coniferous slightly offset, which advantageously reduces the length of the production line.

FIGURESFIGURES

  • Les figures 1 et 2 illustrent schématiquement, respectivement en vue de droite et en vue de face, une machine de conification conventionnelle.The Figures 1 and 2 schematically illustrate, respectively in a right view and in front view, a conventional conification machine.
  • La figure 3 illustre une machine de conification selon l'invention fonctionnement selon la première configuration envisagée (cadence de production doublée).The figure 3 illustrates a conification machine according to the invention operating according to the first configuration envisaged (doubled production rate).
  • La figure 4 illustre schématiquement les cycles associés aux mouvements du premier plateau porte-bases, du plateau porte-outils et du deuxième plateau porte-bases d'une machine de conification selon l'invention.The figure 4 schematically illustrates the cycles associated with the movements of the first base plate, the tool plate and the second base plate of a conification machine according to the invention.
  • La figure 5 illustre une machine de conification selon l'invention fonctionnement selon la seconde configuration envisagée (doublement de la capacité en incréments de déformation).The figure 5 illustrates a conification machine according to the invention operating according to the second configuration envisaged (doubling the capacity in increments of deformation).
DESCRIPTION DETAILLEE DE L'INVENTION (figures 3,4 et 5)DETAILED DESCRIPTION OF THE INVENTION (FIGS. 3,4 and 5)

Les figures 3 et 5 représentent schématiquement une machine 200 selon l'invention, fonctionnant selon deux configurations différentes, qui comprend :

  • un bâti 210 supportant une colonne horizontale 215 de section circulaire animée, à l'aide d'un premier actionneur (non représenté), d'un mouvement de translation alternée (T);
  • un premier plateau porte-bases 220, s'étendant perpendiculairement à ladite colonne, portant n (=24) bases 221 régulièrement réparties sur sa circonférence, et animé, à l'aide d'un deuxième actionneur, d'un mouvement de rotation discontinu (R1) autour de l'axe 201 de ladite colonne, tournant pas à pas, par pas d'un angle de 2π/n (en l'occurrence π/12), lesdites bases étant destinées à recueillir les ébauches 10 des récipients métalliques;
  • un plateau porte-outils 230, qui s'étend perpendiculairement à ladite colonne et qui est solidaire de ladite colonne, comprenant, sur sa face orientée vers le premier plateau porte-bases 220, n logements permettant de fixer une matrice 231 - ou tout autre outil apte à la déformation de la paroi transversale d'une ébauche - en vis-à-vis des bases 221 dudit premier plateau porte-bases 220.
The figures 3 and 5 schematically represent a machine 200 according to the invention, operating in two different configurations, which comprises:
  • a frame 210 supporting a horizontal column 215 of circular section animated, with the aid of a first actuator (not shown), an alternating translation movement (T);
  • a first base-holder plate 220, extending perpendicularly to said column, bearing n (= 24) bases 221 regularly distributed over its circumference, and animated, with the aid of a second actuator, of a discontinuous rotational movement (R1) around the axis 201 of said column, rotating step by step by an angle of 2π / n (in this case π / 12), said bases being intended to collect the blanks 10 of the metal containers ;
  • a tool plate 230, which extends perpendicular to said column and which is integral with said column, comprising, on its face facing the first base-plate 220, n housings for fixing a matrix 231 - or any other tool capable of deformation of the wall cross-section of a blank - opposite the bases 221 of said first base-plate 220.

La fonction "support de la colonne" exercée par le bâti est réalisée par l'intermédiaire d'un palier 205 constitué par une bague en bronze qui participe au guidage des plateaux porte-bases.The function "support of the column" exerted by the frame is achieved by means of a bearing 205 consisting of a bronze ring which participates in guiding the base-carrier trays.

Ladite machine comprend également un deuxième plateau porte-bases 240, placé de telle sorte qu'il encadre avec le premier plateau porte-bases 220 le plateau porte-outils 230, portant également n bases 241 régulièrement réparties sur sa circonférence, et animé, à l'aide d'un troisième actionneur (non représenté), d'un mouvement de rotation discontinu (R2, R'2) autour de l'axe 201 de la colonne 215, tournant pas à pas, par pas d'un angle de 2π/n. Le plateau porte-outils 230 comprend également, sur sa face orientée vers le deuxième plateau porte-bases 240, n logements permettant de fixer une matrice 232 - ou tout autre outil apte à la déformation de la paroi transversale d'une ébauche - en vis-à-vis des bases du deuxième plateau porte-bases 240.Said machine also comprises a second base-plate 240, placed so that it frames with the first base-plate 220 the tool plate 230, also bearing n bases 241 regularly distributed over its circumference, and animated, using a third actuator (not shown), a discontinuous rotational movement (R2, R'2) around the axis 201 of the column 215, rotating step by step, by a step of 2π / n. The tool plate 230 also comprises, on its side facing the second base-plate 240, n housings making it possible to fix a matrix 232 - or any other tool capable of deforming the transverse wall of a blank - in the form of screws. to the bases of the second base plate 240.

Le plateau porte-outils 230 est solidaire de la colonne 215 qui est animée grâce au premier actionneur d'un mouvement de translation axiale alternée. Une prolongation 211 du bâti, s'étendant au-delà du deuxième plateau porte-outils 240, est munie d'un palier supportant l'extrémité de la colonne 216 qui elle-même s'étend au-delà dudit deuxième plateau porte-outils 240.The tool plate 230 is integral with the column 215 which is driven by the first actuator of an alternating axial translation movement. An extension 211 of the frame, extending beyond the second tool plate 240, is provided with a bearing supporting the end of the column 216 which itself extends beyond said second tool plate 240.

Les 24 positions des outils (231) sur une face sont décalées de π/24 par rapport aux 24 positions des outils (232) sur l'autre face de façon à pouvoir placer, au droit d'un outil donné 231 (respectivement 232) et sur la face opposée dudit plateau porte-outils, un appui mécanique, en l'occurrence une nervure de renfort 236 (respectivement 237) , qui permet audit outil de mieux résister aux chocs mécaniques répétés qu'il subit lors du tamponnage. Le deuxième plateau porte-bases 240 présente également un ensemble de 24 bases décalé de π/24 par rapport à l'ensemble des 24 bases du premier plateau porte-bases 220.The 24 positions of the tools (231) on one face are shifted by π / 24 relative to the 24 positions of the tools (232) on the other face so as to be able to place, at the right of a given tool 231 (respectively 232) and on the opposite face of said tool plate, a mechanical support, in this case a reinforcing rib 236 (respectively 237), which allows said tool to better withstand the repeated mechanical shocks it undergoes during buffering. The second base-plate 240 also has a set of 24 bases offset by π / 24 with respect to all 24 bases of the first base-plate 220.

Pour faciliter la synchronisation du mouvement des plateaux, l'ensemble des actionneurs est associé à un même moteur en rotation continue. Le premier actionneur correspond à l'association d'un moteur rotatif en rotation continue avec un système mécanique bielle - vilebrequin, ce dernier étant couplé au moteur de telle sorte que le vilebrequin fait un tour complet lorsque les plateaux porte-bases font un nième de tour. Le deuxième actionneur correspond à l'association du même moteur en rotation continue avec un premier indexeur à cames qui transforme la rotation continue en une suite de rotations correspondant chacune à une fraction de tour 2π/n (en l'occurrence π/12) du premier plateau porte-bases 220. Le troisième actionneur correspond également à l'association du même moteur en rotation continue avec un deuxième indexeur à cames qui transforme la rotation continue en une suite de rotations correspondant chacune à une fraction de tour 2π/n (en l'occurrence π/12) du deuxième plateau porte-bases 240. Mais le deuxième indexeur est décalé par rapport au premier indexeur de façon à ce que la position de tamponnage des outils d'une face du porte-outils corresponde à la position de repos des outils de l'autre face. Le décalage temporel doit donc correspondre à la moitié de la durée d'un cycle.To facilitate the synchronization of the movement of the plates, the set of actuators is associated with the same motor in continuous rotation. The first actuator corresponds to the combination of a rotating engine in continuous rotation with a mechanical crankshaft - crankshaft system, the latter being coupled to the engine so that the crankshaft makes a complete revolution when the base plates make a nth of tower. The second actuator corresponds to the association of the same motor in continuous rotation with a first cam indexer which transforms the continuous rotation into a series of rotations each corresponding to a fraction of a turn 2π / n (in this case π / 12) of first base plate 220. The third actuator also corresponds to the association of the same motor in continuous rotation with a second cam indexer which transforms the continuous rotation into a series of rotations each corresponding to a fraction of a turn 2π / n (in the occurrence π / 12) of the second base plate 240. But the second indexer is offset relative to the first indexer so that the buffering position of the tools of a face of the tool holder corresponds to the position of rest of the tools on the other side. The time offset must therefore correspond to half the duration of a cycle.

La figure 4 illustre schématiquement les cycles associés au mouvement (R1) du premier plateau porte-bases 220, au mouvement (T) du plateau porte-outils 230 et au mouvement (R2) du deuxième plateau porte-bases 240.The figure 4 schematically illustrates the cycles associated with the movement (R1) of the first base plate 220, the movement (T) of the tool plate 230 and the movement (R2) of the second base plate 240.

Le graphe R1 (t) du haut indique les cycles suivis au cours du temps par le premier plateau porte base 220:

  • lorsque R1 (t) est différent de 0, ledit plateau est mis en mouvement et
  • lorsque R1 (t) est nul, le plateau est immobile et le plateau porte-outils 230, dont la trajectoire est indiquée sur le graphe (T(t)) du milieu, se rapproche du premier plateau jusqu'à atteindre son point extrême E1 (T(t)=1) puis s'en éloigne.
The graph R1 (t) of the top indicates the cycles followed in the course of time by the first base tray 220:
  • when R1 (t) is different from 0, said plateau is set in motion and
  • when R1 (t) is zero, the plate is stationary and the tool plate 230, whose trajectory is indicated on the graph (T (t)) of the middle, approaches the first plate until reaching its extreme point E1 (T (t) = 1) then move away from it.

Le graphe R2(t) du bas indique les cycles suivis au cours du temps par le deuxième plateau porte base 240:

  • lorsque R2(t) est différent de 0, ledit plateau est mis en mouvement,
  • lorsque R2(t) est nul, le plateau est immobile et le plateau porte-outils 230 se rapproche du deuxième plateau jusqu'à atteindre son point extrême E2 (T(t)= -1).
The graph R2 (t) at the bottom indicates the cycles followed over time by the second base plate 240:
  • when R2 (t) is different from 0, said plate is set in motion,
  • when R2 (t) is zero, the plate is stationary and the tool plate 230 approaches the second plate until reaching its extreme point E2 (T (t) = -1).

Pour chacun des plateaux porte-bases, la durée c d'un cycle correspond à la somme du temps r mis pour effectuer une rotation de π/12, incluant les phases d'accélération (I) et de décélération (II) dudit plateau et du temps de travail w, incluant le temps de tamponnage d proprement dit et, au moins partiellement, les phases d'approche a et d'éloignement e de l'outil.For each of the base-bearing plates, the duration c of a cycle corresponds to the sum of the time r put to perform a rotation of π / 12, including the acceleration (I) and deceleration (II) phases of said plateau and working time w, including the actual buffering time and, at least partially, the approaches a and distance e of the tool.

Le deuxième plateau porte-bases 240 suit des rotations de π/12, effectuées pas à pas, avec un décalage temporel de c/2 par rapport au premier plateau porte-bases 220. Le plateau porte-outils 230 suit un mouvement de translation alternée tel que chaque extrémité de la trajectoire E1 (respectivement E2) est atteinte au milieu de la phase d'immobilisation F1 (respectivement F2) du plateau porte-bases 220 (respectivement 240) associé à ladite extrémité.The second base-plate 240 follows rotations of π / 12, made step by step, with a time shift of c / 2 relative to the first base-plate 220. The tool-plate 230 follows an alternating translational movement such that each end of the trajectory E1 (respectively E2) is reached in the middle of the immobilization phase F1 (respectively F2) of the base plate 220 (respectively 240) associated with said end.

Bien entendu, chaque outil (231, 232) est placé sur une face du plateau porte-outils 230 avec une "hauteur" axiale telle que l'outil peut atteindre l'extrémité ouverte de l'ébauche à la position Tc voulue, l'écart entre cette position Tc et celle de l'extrémité de trajectoire correspondante (E1 sur la figure 4), représentant la course axiale de travail de l'outil qui est consacrée à la déformation de la zone de la paroi axisymétrique qui se trouve à proximité de l'extrémité ouverte de l'ébauche.Of course, each tool (231, 232) is placed on one face of the tool-holder plate 230 with an axial "height" such that the tool can reach the open end of the blank at the desired position Tc. difference between this position Tc and that of the corresponding trajectory end (E1 on the figure 4 ), representing the axial working stroke of the tool which is dedicated to the deformation of the zone of the axisymmetrical wall which is close to the open end of the blank.

Le deuxième plateau porte-bases 240 tourne - avec un décalage temporel correspondant à un demi-cycle - soit dans le même sens de rotation que le premier plateau porte-outils (première configuration, figure 3), soit, par le biais d'accouplements adaptés, soit dans un sens de rotation opposé (deuxième configuration, figure 5).The second base plate 240 turns - with a time offset corresponding to half a cycle - in the same direction of rotation as the first tool plate (first configuration, figure 3 ), either by means of suitable couplings or in an opposite direction of rotation (second configuration, figure 5 ).

Première Configuration (figure 3)First Configuration (Figure 3)

Les ébauches provenant de la ligne de fabrication sont séparées en deux flux de même intensité: les ébauches 10a sont mises en place sur le premier plateau porte-bases 220 et les ébauches10b sont mises en place sur le deuxième plateau porte-bases 240. Les plateaux porte-bases 220 et 240 présentent 24 bases 121 régulièrement réparties sur leur circonférence. Le plateau porte-outils 230 présente sur chacune de ces faces 24 positions sur lesquelles il est possible de fixer une matrice 231, 232 en vis-à-vis d'une base ou tout autre outil capable d'agir sur les ébauches de boîtier par tamponnage. Chacune de ces positions correspond à un poste de travail. Les ébauches 10a (resp. 10b) sont déformées progressivement par la rencontre des matrices 231 (resp. 232) qui se succèdent. Lorsque le dernier poste est atteint, les boîtiers sont éjectés de leur base, éventuellement regroupés, et transportés vers des postes d'emballage ou de parachèvement.The blanks coming from the production line are separated into two streams of the same intensity: the blanks 10a are placed on the first base-plate 220 and the blanks 10b are placed on the second base-plate 240. The plates base carriers 220 and 240 have 24 bases 121 regularly distributed around their circumference. The tool plate 230 has on each of these faces 24 positions on which it is possible to fix a matrix 231, 232 vis-à-vis a base or any other tool capable of acting on the housing blanks by buffering. Each of these positions corresponds to a workstation. The blanks 10a (respectively 10b) are progressively deformed by the meeting of the matrices 231 (respectively 232) which succeed one another. When the last station is reached, the housings are ejected from their base, possibly grouped, and transported to packing stations or completion.

La conifieuse permet ainsi de travailler sur un flux de boîtiers double de celui des conifieuses ou préconifieuses classiques. Il en résulte une machine dont la capacité en vitesse de conification est doublée.The coniferous thus makes it possible to work on a flow of housings double of that of the coniferous or preconceived classics. This results in a machine whose capacity in speed of conification is doubled.

Deuxième Configuration (figure 5)Second Configuration (Figure 5)

Les ébauches 21 provenant de la ligne de fabrication sont mises en place sur le premier plateau porte-bases 220. Le plateau porte-bases 220 présente 24 bases 121 régulièrement réparties sur la circonférence. Elles sont déformées progressivement par la rencontre des matrices 231 qui se succèdent. L'ébauche 22 présente une forme correspondant avantageusement à une étape de rétreint située au premier quart du chemin de déformation que l'on souhaite imposer. Lorsque le dernier poste de déformation sur le premier plateau porte-bases 220 est atteint, l'ébauche est éjectée de la base 221, retournée et placée sur une base 241 du deuxième plateau porte-bases 240. A ce stade, elle peut présenter une forme telle que celle illustrée par l'ébauche 23, où l'extrémité ouverte a subi une dilatation de son diamètre, de sorte que la paroi transversale présente en son milieu une dépression annulaire. L'ébauche continue à être déformée progressivement par la rencontre des matrices 232 qui se succèdent. L'ébauche 24 présente une forme correspondant avantageusement à une nouvelle étape de rétreint de l'extrémité ouverte, étape située approximativement au dernier quart du chemin de déformation que l'on souhaite imposer à ce boîtier. Lorsque le dernier poste est atteint, les boîtiers sont éjectés de leur base 241 et transportés vers des postes d'emballage ou de parachèvement.The blanks 21 from the production line are put in place on the first base plate 220. The base plate 220 has 24 bases 121 evenly distributed around the circumference. They are deformed progressively by the meeting of matrices 231 which succeed one another. The blank 22 has a shape advantageously corresponding to a necking step located at the first quarter of the deformation path that is to be imposed. When the last deformation station on the first base plate 220 is reached, the blank is ejected from the base 221, turned over and placed on a base 241 of the second base plate 240. At this stage, it may have a shape such as that illustrated by the blank 23, where the open end has undergone expansion of its diameter, so that the transverse wall has in its middle an annular depression. The blank continues to be deformed progressively by the meeting of matrices 232 which succeed one another. The blank 24 has a shape advantageously corresponding to a new step of narrowing of the open end, a step located approximately at the last quarter of the deformation path that one wants to impose on this case. When the last station is reached, the boxes are ejected from their base 241 and transported to packing stations or completion.

Dans cette deuxième configuration, la direction de sortie des boîtiers est à l'opposé de la direction de sortie d'une ligne classique, ce qui permet d'installer les équipements de parachèvement des boîtiers non pas en bout de ligne mais en "amont" de la conifieuse, légèrement décalés, ce qui permet d'avoir une ligne de fabrication plus courte.In this second configuration, the outlet direction of the housings is the opposite of the exit direction of a conventional line, which allows to install the finishing equipment of the housings not at the end of line but "upstream" of the coniferous, slightly staggered, which allows to have a shorter production line.

Comme il va de soi, l'invention ne se limite pas aux seules formes d'exécution de cette machine, décrites ci-dessus à titre d'exemple, elle en embrasse au contraire toutes les variantes de réalisation. C'est ainsi notamment que la colonne 215 pourrait présenter une section non circulaire.As goes without saying, the invention is not limited to the embodiments of this machine, described above as an example, it encompasses all the variants. Thus, in particular, the column 215 could have a non-circular section.

Claims (9)

  1. A machine (200) for shaping the wall, in particular the side wall, of a metal container, such as a can for an aerosol spray can or a bottle, comprising
    - a frame (210) carrying a column (215) driven by means of a first actuator in an alternating translational motion (T);
    - a first base holder plate (220) extending perpendicularly to said column, holding n bases (221) evenly distributed over the circumference thereof, n being an integer preferably a multiple of 4, advantageously equal to 12, 16, 20, 24, or 28, and driven by means of a second actuator in a discontinuous rotational motion around the axis (201) of said column, turning step by step, in increments of an angle of 2π/n, said bases being intended to receive the blanks of the metal containers;
    - a tool holder plate (230) extending perpendicularly to said column, integral with said column, comprising on the face thereof oriented towards said first base holder plate, n seats allowing to fasten a die (231) - or any other tool adapted to deform the transverse wall of a blank - opposite the bases of said first base holder plate,
    characterized in that
    said machine also comprises a second base holder plate (240), placed so that together with the first base holder plate (220) it mounts the tool holder plate (230), also holding n bases (241) evenly distributed over the circumference thereof, and driven by means of a third actuator in a discontinuous rotational motion around the axis (201) of said column, turning step by step, in increments of an angle of 2π /n,
    and in that said tool holder plate also comprises on the face thereof oriented towards said second base holder plate, n seats allowing to fasten a die (232) - or any other tool adapted for deforming the transverse wall of a blank - opposite the bases of said second base holder plate.
  2. The machine according to claim 1, characterized in that the positions of the n tool seats of one face and the positions of the n tool seats of the other face of said tool holder are shifted by an angle of π/n.
  3. The machine according to claim 1 or 2, wherein said column extends beyond said second tool holder plate, and the frame (210) of which has a part (211) extending beyond the second tool holder plate (240) and which is fitted with a bearing carrying the end (216) of said column.
  4. The machine according to any of claims 1 to 3, wherein, the rotations (R1 and R2; R1 and R'2) of the two base holder plates (220 and 240) and the alternated translation (T) of the tool holder plate (230) are periodic movements following the same frequency, the duration (c) of one cycle corresponding on the one hand to the round-trip of the tool holder plate, and on the other hand, to the sum (r+w) of the time (r) required for performing the rotation of either of the base holder plates by 2π/n, including the phases of acceleration and deceleration of said plate, and of the working time (w) including the buffing time (d) as such, and at least partially, the feeding (a) and reversing (e) phases of the tool.
  5. The machine according to any of claims 1 to 4, wherein the movements of the base holder plates (220 and 240) and the tool holder plate (230) are synchronized so that the end (E1, or E2) of the path of the tool holder plate close to the base holder plate (220, or 240) involved in the buffing is reached when said base holder plate is located in the middle (F1, or F2) of the immobilizing phase thereof.
  6. The machine according to any of claims 1 to 5, wherein the second actuator and the third actuator are moved by the same continuously turning rotary engine, said second actuator being associated with a first cam gear transforming the continuous rotation into a series of rotations each corresponding to a fraction of a turn of the base holder plate, the third actuator being associated with a second cam gear transforming the continuous rotation into a series of rotations each corresponding to a fraction of a turn of the base holder plate, the second gear being offset with respect to the first gear so that the buffing position of the tools of one side of the tool holder corresponds to the standby position of the tools of the other face, the time offset of the cycles corresponding to half the common duration (c) of the cycles.
  7. The machine according to any of claims 1 to 6, wherein the first actuator is moved by the same continuously turning rotary engine and is associated with a connecting rod/crankshaft assembly coupled to the motor so that the crankshaft performs one complete turn when the base holder plates perform an n-th turn.
  8. The machine according to any of claims 1 to 7, wherein the second base holder plate (240) is turning in the same direction of rotation (R2) as the first tool holder plate (220).
  9. The machine according to any of claims 1 to 7, wherein the second base holder plate (240) is turning in the direction of rotation (R2) opposite that of the first tool holder plate (220).
EP08761807A 2007-02-13 2008-01-28 Compact metal can tapering machine for aerosol dispensers and the like Not-in-force EP2125265B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0701020A FR2912332B1 (en) 2007-02-13 2007-02-13 COMPACT METAL HOUSING CONIFICATION MACHINE FOR AEROSOL AND AQUIVALENT DISTRIBUTORS
PCT/FR2008/000095 WO2008110679A1 (en) 2007-02-13 2008-01-28 Compact metal can tapering machine for aerosol dispensers and the like

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EP2125265A1 EP2125265A1 (en) 2009-12-02
EP2125265B1 true EP2125265B1 (en) 2010-09-01

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AT (1) ATE479510T1 (en)
DE (1) DE602008002415D1 (en)
FR (1) FR2912332B1 (en)
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Cited By (3)

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CN108356154A (en) * 2018-05-23 2018-08-03 芜湖华铸汽车部件有限公司 A kind of whole-automatic dynamic formula auto parts and components press machine
CN108526320A (en) * 2018-05-23 2018-09-14 芜湖华铸汽车部件有限公司 A kind of auto parts and components automatic press control system
CN108637064A (en) * 2018-05-23 2018-10-12 芜湖华铸汽车部件有限公司 A kind of multifunctional efficient rate auto parts and components impact molding machine

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US7726165B2 (en) 2006-05-16 2010-06-01 Alcoa Inc. Manufacturing process to produce a necked container
US7934410B2 (en) 2006-06-26 2011-05-03 Alcoa Inc. Expanding die and method of shaping containers
KR101853088B1 (en) 2010-08-20 2018-04-27 알코아 유에스에이 코포레이션 Shaped metal container and method for making same
US9327338B2 (en) 2012-12-20 2016-05-03 Alcoa Inc. Knockout for use while necking a metal container, die system for necking a metal container and method of necking a metal container
WO2015110470A1 (en) * 2014-01-22 2015-07-30 Spl Soluzioni S.R.L. Apparatus for machining metallic bodies
EP3025804B1 (en) * 2014-11-25 2018-06-27 SPL Soluzioni S.r.l. Apparatus for working metallic bodies

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EP0275369B1 (en) * 1987-01-21 1992-05-20 FRATTINI S.p.A.-COSTRUZIONI MECCANICHE Improvements to machines for cone-shaping and flanging of aerosol cans and similar
AR027371A1 (en) * 2000-02-10 2003-03-26 Envases Uk Ltd DEFORMATION OF SLIM WALL BODIES
EP1531017A1 (en) * 2003-11-11 2005-05-18 Envases metalurgicos de Alava, S.A. Machine and method for shaping containers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108356154A (en) * 2018-05-23 2018-08-03 芜湖华铸汽车部件有限公司 A kind of whole-automatic dynamic formula auto parts and components press machine
CN108526320A (en) * 2018-05-23 2018-09-14 芜湖华铸汽车部件有限公司 A kind of auto parts and components automatic press control system
CN108637064A (en) * 2018-05-23 2018-10-12 芜湖华铸汽车部件有限公司 A kind of multifunctional efficient rate auto parts and components impact molding machine
CN108356154B (en) * 2018-05-23 2019-07-02 芜湖华铸汽车部件有限公司 A kind of whole-automatic dynamic formula auto parts and components press machine
CN108637064B (en) * 2018-05-23 2019-10-18 李贞贞 A kind of multifunctional efficient rate auto parts and components impact molding machine

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FR2912332B1 (en) 2009-05-08
FR2912332A1 (en) 2008-08-15
ATE479510T1 (en) 2010-09-15
EP2125265A1 (en) 2009-12-02
WO2008110679A1 (en) 2008-09-18
DE602008002415D1 (en) 2010-10-14

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