EP0122174B1 - Machine for setting up, holding and transferring cardboard packing boxes - Google Patents

Machine for setting up, holding and transferring cardboard packing boxes Download PDF

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Publication number
EP0122174B1
EP0122174B1 EP84400466A EP84400466A EP0122174B1 EP 0122174 B1 EP0122174 B1 EP 0122174B1 EP 84400466 A EP84400466 A EP 84400466A EP 84400466 A EP84400466 A EP 84400466A EP 0122174 B1 EP0122174 B1 EP 0122174B1
Authority
EP
European Patent Office
Prior art keywords
conveyor
magazine
packaging
packaging body
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84400466A
Other languages
German (de)
French (fr)
Other versions
EP0122174A1 (en
Inventor
Gérard Parnalland
Jean Buzy-Debat
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.)
Socar-Parnalland SA
Original Assignee
Socar-Parnalland SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Socar-Parnalland SA filed Critical Socar-Parnalland SA
Priority to AT84400466T priority Critical patent/ATE23972T1/en
Publication of EP0122174A1 publication Critical patent/EP0122174A1/en
Application granted granted Critical
Publication of EP0122174B1 publication Critical patent/EP0122174B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/32—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by external pressure diagonally applied
    • B65B43/325—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by external pressure diagonally applied to boxes, cartons or carton blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/30—Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/06—Feeding sheets or blanks from stacks
    • B31B50/062—Feeding sheets or blanks from stacks from the underside of a magazine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/76—Opening and distending flattened articles
    • B31B50/80—Pneumatically

Definitions

  • the present invention relates to the volume of packaging bodies made of cardboard or the like, having the shape of a rectangular parallelepiped.
  • the invention relates to a machine intended to volume such packaging bodies and which can be used both by the manufacturer to carry out in series a packaging by volume setting of the packaging body and insertion therein, by example of a partitioning crosspiece, only by a user to fill with products the packaging thus produced, by volume of this packaging equipped or not with braces and introduction of the products to be packaged.
  • French Patent No. 1,453,183 describes a machine used to volume flattened cardboard packaging bodies, and which comprises a first horizontal conveyor chain conveyed continuously and provided with organs '' equidistant drive for the packaging body drive, a second horizontal chain conveyor arranged parallel to the first conveyor but offset in the drive direction, the lower strands of the endless chains of this second conveyor moving in the same direction as the upper strands of the endless chains of the first conveyor with a speed lower than the latter and being provided with equidistant stops for the packaging bodies, and a third horizontal chain conveyor arranged in the extension of the first conveyor and under the second conveyor, which is driven at the same speed as the latter and which is provided with equidistant drive members.
  • a packaging body in the flattened state placed between a drive member of the first conveyor and a stop of the second conveyor, and with its fold lines directed transversely to the direction of advance of the conveyors, s' opens gradually, since the distance between the drive member and the stop gradually decreases.
  • the arrangement is adjusted so that when the packaging body has a rectangular section, the drive member of the first conveyor retracts while a drive member of the third conveyor comes to replace it.
  • the adjustment of the speeds must be carried out with great precision, because if one deviates from it a little bit, the packaging body risks being crushed between the drive member and the stop which surrounds it. . Likewise.
  • the spacing between the active faces of the drive member of the third conveyor and the stop of the second conveyor must be carefully adjusted so that the packaging body retains its rectangular section.
  • the adaptation of the machine for the volume of packaging bodies of formats different from that for which it is adjusted is very difficult, if not impossible to carry out, since this would require dismantling the chains of the second and of the third conveyors and reassemble them so that the drive members and stops are at the desired spacing in accordance with the new format processed.
  • the machine according to the aforementioned patent requires an adjustment in height of the second conveyor relative to the third conveyor as a function of the height of the packaging body.
  • the present invention overcomes this drawback and for this purpose relates to a machine according to the characterizing part of claim 1.
  • the pinions of the first conveyor are wedged on said drive shaft, while those of the second conveyor are formed on a tubular body which is mounted idly rotating around said shaft, and which can be either secured, or disengaged in rotation from the latter, thanks to the provision of a disconnectable coupling mechanism.
  • a disconnectable coupling mechanism which comprises two toothed coaxial discs arranged face to face with their teeth facing one another and mounted to rotate about their respective coaxial axes, said discs being respectively connected in movement, by means of movement transmission means, a. a pinion wedged on the motor shaft and a pinion integral with the tubular body, control means being provided for applying the dis ques one against the other, so as to make the moving second conveyor of the first, or to separate them from one another.
  • the drive members can be constituted by transverse bars connecting the chains of the first conveyor.
  • the second conveyor In the engaged position of the coupling mechanism, the second conveyor is driven integrally with the first conveyor.
  • the distance between the drive bars and the stops is adjusted so that each time the engine is stopped, a stop is placed under the magazine vertical to the fold line separating the two lower panels from the flattened packaging body located in the store.
  • the machine according to the invention can be adapted to the treatment of cases of different formats.
  • the adjustment process consists of disengaging the second conveyor from the first, then turning the second conveyor by hand independently of the first conveyor, until one of the stops comes to be positioned vertically over the defined fold line. above, then re-engage the second conveyor to secure it in rotation with the first conveyor. As a result, each time the engine is stopped, a drive bar and a stop are positioned under the magazine at their respective location defined above.
  • the stops consist of rollers with a horizontal axis oriented transversely to the direction of advance of the conveyors, said rollers being mounted so as to rotate about their axis, at the upper end of vertical support arms fixed by their central part to the chains of the second conveyor, a non-return device being provided to allow the rotation of the roller in the direction for which the lower front wall of the flattened packaging body makes it roll down ( anticlockwise in fig. 1), but to prevent its rotation in the opposite direction.
  • the packaging body which is at the base of the magazine is driven downwards by the extraction system, its fold line located downstream bears against the internal face of the drive bar which is located in position under the magazine, while said front bottom wall bears on the roller.
  • said lower front wall straightens towards the vertical position at the same time as it rolls the roller: the packaging body gradually takes its parallelepiped shape. Once it has reached it, it cannot return to its flattened state since the roller cannot rotate in the direction for which the wall of the packaging body which is in contact with it would tend to come off.
  • the maintenance of the box thus formed, in its parallelepiped shape can be reinforced by the fact that the internal distance between each drive bar and the roller located immediately upstream in the direction of advancement of the conveyors is chosen slightly less than the longitudinal dimension of the squared box and that the arms which carry the roller are pivotally mounted and are returned to a vertical position by elastic means.
  • roller prints on the wall on which it is supported, a deformation towards the inside of the body, which deformation is opposed to the return of the body to its flattened state.
  • the magazine is equipped at its base with a retaining system intended to retain the stack of packaging bodies in the magazine and to release only the lower packaging body from the stack, at the time of its extraction.
  • This system can be constituted for example by a pinion driven in a reciprocating rotational movement, by motor means synchronized with the reciprocating movement of the extraction system, said pinion driving two parallel racks arranged on either side of the axis. of the pinion and which end at one end by support blades, the whole system being mounted horizontally on the side of the transverse wall upstream of the magazine so that one of the support blades is slightly below the level of the body the bottom packaging of the stack and that the other support blade is slightly below the level of the packaging body which is immediately above it.
  • the synchronization is adjusted so that, when the extraction system begins to descend, the pinion rotates in the direction in which the lower support blade retracts from the magazine and the upper support blade enters the magazine to be placed under the edge of the '' penultimate packaging body, and when the extraction system begins to mount, the pinion rotates in the opposite direction, reversing the position of the support blades.
  • the shaping can be initiated by means of a convex preformer located at the lower part of the magazine in line with the lower front wall of the flattened packaging body.
  • the machine according to the embodiment envisaged for the invention has a much simpler structure than that according to the patent FR 1453183 mentioned previously since it only comprises two conveyors.
  • it makes it possible to volume packaging bodies of different formats and this, with extremely simple adjustments to be made. Unlike the machine according to this patent. no height adjustment is necessary.
  • the bending defect previously reported for the known machine does not exist in the machine according to the embodiment of the invention, since the packaging body does not arrive flat on the conveyors and then be laterally compressed, but gradually takes on its squared shape as it descends.
  • the machine according to the invention is much simpler and less bulky than that according to the U.S. Patent 4,254,604.
  • the packaging bodies are resigned by the general reference 10.
  • the magazine containing the vertical stack of packaging bodies by the reference 12 the system for extracting the packaging bodies by the reference 14 and the means for conveying crates placed in volume, by the general reference 16.
  • the flattened packaging bodies 10 comprise on the one hand, four panels 18a, 18b, 18c, 18d intended to form the side walls of the packaging, these panels being hinged together by fold lines 20, and on the other hand, end flaps, not shown, intended to form the bottom and the upper part of the package.
  • the end flaps are arranged in the extension of the corresponding panels.
  • the magazine 12 consists of four vertical angles 22a, 22b, 22c and 22d between which are slid the flattened packaging bodies 10 arranged so that their fold lines are directed perpendicular to the direction of movement f of the conveying means.
  • the angles 22a and 22b disposed upstream relative to said direction of movement are fixed, while the angles 22c and 22d can be brought closer or apart from the angles 22a and 22b in order to adapt the cross section of the magazine to the format of the bodies of packaging to be put into volume.
  • the stack of packaging bodies is retained, upstream, by a retaining system 24 which will be described in detail below, and downstream, by a preformer 25 fixed to the base of the downstream angles 22c, 22d.
  • the extraction system 14 is arranged under the magazine, directly above the lower panels 18b downstream of the flattened packaging bodies. It comprises four suction cups 23 connected to a vacuum circuit not shown and carried by a plate 27 which a jack system 30 makes it possible to move up and down.
  • the conveying means 16 consists of two chain conveyors each comprising two parallel chains 32a, 32b and 34a. 34b respectively, the chains 34a. 34b being arranged between the chains 32a, 32b and defining with the latter at their upper part a common horizontal plane of conveyance.
  • Chains 32a. 32b of the first conveyor wind at the upstream end of said conveying plane, around pinions 36a, 36b connected by a shaft 36c and located upstream of mgasin 12 relative to the direction of conveyance and at the downstream end, around drive pinions 38a, 38b connected by a drive shaft 38c. On the latter is wedged a pinion 40 which is rotated by a motor 42 stepping control by means of a transmission 44.
  • the chains 32a and 32b are wound. under said plane 7 th conveyor, around return sprockets 46 and tension sprockets 48 which can be moved so as to allow adjustment of the chain tension.
  • the stepping movement of the motor can be controlled by any suitable means, for example each time the internal face 50 ′ of a bar cuts the light beam of a photoelectric cell 21 placed directly above the defined plane. by the upstream angles 22a, 22b of the store.
  • a bar 50 will be exactly positioned with its face 50 'in the plane of the angles 22a, 22b, as shown in Figures 1 and 2. This position of the drive bars is invariable whatever the format of the treated packaging body.
  • the chains 34a, 34b of the second conveyor wind at their upstream end around sprockets 60a, 60b connected by a shaft 60c, which are mounted under the magazine, slightly downstream of the extraction system 14. At their downstream end, the chains 34a, 34b are wound around pinions 62a, 62b connected together by a tubular body 64.
  • the second conveyor also includes return sprockets 66 and tension sprockets, not visible in the figures.
  • the set of pinions 62a 62b and of the tubular body 64 is mounted with idle rotation around the motor shaft 38c of the first conveyor, so that the second conveyor can be made independent in rotation of the first conveyor.
  • a coupling mechanism which can be of any suitable type.
  • it is constituted by a clutch comprising two coaxial discs 70, 72, mounted to rotate about their respective axis.
  • the faces of the discs which are facing each other are provided with complementary toothing capable of fitting into one another when an electromagnetic control system that moves one of the discs axially to bring it into contact with the other.
  • the discs 70, 72 carry pinions 74, 76 which are respectively connected by endless transmissions 78, 80 to pinions 82, 84 respectively secured to the motor shaft 38c and the tubular body 64.
  • the chains 34a, 34b of the second conveyor are connected at regular intervals d, equal to those separating the bars 50, by stops constituted by rollers 86 with a horizontal axis directed transversely to the direction of advance f of the conveyor.
  • Each roller is mounted rotating around its geometric axis, materialized by two sections of rod projecting at the center of its end faces.
  • These rod sections are mounted journalled in holes formed at the upper end of two vertical elongated plates 88, themselves pivotally mounted in a vertical plane parallel to the chains 34a, 34b, around an axis 90 (Figure 1) carried by the latter and which passes through said plates in the vicinity of their middle part.
  • rollers 86 are located above the conveying plane, substantially at the same level as the drive bars 50.
  • a non-return system is provided to prevent the rollers from rotating around their axis in the clockwise in Figure 1, but to allow them to rotate freely in the opposite direction. The reason for this measurement will appear later.
  • the retaining system 24 for the packaging bodies comprises, in the embodiment shown in FIG. 3, a pinion 96 driven in rotation for example by a rotary actuator and which drives two racks 98, 100 arranged in parallel on either side 'other of the pinion axis, so that they have opposite direction movements.
  • Each of the racks ends at one end with a blade 102. 104.
  • the restraint system is mounted at the base of the magazine outside of it, on the side of the upstream angles 22a, 22b and it is arranged so that the blades are above one another and that either protrudes inside the store to support a packaging body.
  • the rotary actuator which controls the pinion 96 is supplied by the same source of hydraulic fluid as the actuator 30 of the extraction system so that, when the actuator 30 expands upward, the gear 9 rotates clockwise. 'a watch in Figure 3 and when the cylinder retracts, the pinion rotates in opposite directions. The operation of the restraint system will be explained later.
  • the adjustment of the machine is carried out as follows: the downstream angles 22c, 22d are removed or brought closer to the upstream angles 22a, 22b so as to adapt the cross section of the magazine 12 to the surface of the flattened packaging bodies 10 to be brought into position. volume.
  • the relative angular position of the second conveyor is then adjusted relative to the first conveyor by separating the two discs 70, 72, then rotating the second conveyor 28 by hand until the internal spacing between the rollers 86 and the drive bars 50 is substantially equal to the dimension of the upstream bottom panel 18b of the flattened packaging body, in position in the magazine, and finally by reapplying the two discs one against the other in order to make the two conveyors united in movement. It is thus ensured that at each stop of the conveyors, a bar 50 and a roller 86 will be correctly positioned under the magazine.
  • the operation of the machine is as follows: the motor 42 is started.
  • the latter drives, via the transmission 44 and the pinion 40, the motor shaft 38c and therefore also the first conveyor 32a, 32b.
  • the movement of the motor shaft is transmitted, via the pinion 82, the transmission 78, the pinion 74, the discs 70, 72 in the engaged position, the pinion 76, the transmission 80 and the pinion 84, to the tubular body 64 and therefore to the second conveyor, which therefore rotates in synchronism and at the same speed as the first conveyor 32a, 32b.
  • a bar 50 arrives in the plane of the upstream angles 22a, 22b, it cuts the light beam emitted by the photoelectric cell 21, which causes the motor 42 and the conveyors 26, 28 to stop.
  • the cylinder 30 of the extraction system begins its ascent.
  • the blade 104 of the lower rack is then in the advanced position under the lower packaging body, while the blade 102 of the upper rack is in the retracted position, so that the entire stack of packaging body then rests on the blade 104 and on the pre-form 25.
  • the suction cups 23 come into contact with the packaging body to be extracted.
  • the pinion 96 is rotated clockwise, thereby bringing the upper blade 102 in the advanced position under the penultimate packing body of the stack , and the lower blade 104 in the retracted position.
  • the lower packaging body thus released is driven by the cylinder 30 downwards.
  • it is shaped first by the pre-shaping device 25 which acts on the panel 18c in the manner of a cam (FIG. 6), then by the roller 86, which said panel 18c rotates anti-clockwise as the packaging body descends.
  • the jack 30 reaches the end of its lower stroke, it causes the pinion 96 to rotate anti-clockwise, which returns the restraint system to its starting position illustrated in FIG. 4, ready for a new distribution cycle.
  • the two conveyors then move in a block at the same speed, driving the box in the squared position and stopping it either opposite a device for inserting a pre-assembled spider, or opposite a filling device in which the products to be packaged are introduced in the supine position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Container Filling Or Packaging Operations (AREA)
  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)

Abstract

1. A machine for assembling packaging bodies of cardboard or the like, of the type comprising a magazine (12) in which the packaging bodies (10) are arranged in a pile in the flattened state, a suction extraction system (14) intended successively to extract the packaging bodies at the lower part of the magazine, a first chain-conveyor (26) arranged under the magazine and equipped with drive means (50) spaced out at regular intervals along the conveyor, and a second chain-conveyor (28) arranged parallel to the first conveyor and whose upper portions are situated between and in the same plane as those of the first conveyor and are fitted with stops (86) separated by uniform intervals (d) equal to those which exist between the drive members (50) of the first conveyor (26), the chains of the first and second conveyors rolling at their downstream end around sprocket wheels (38a, 38b and 62a, 62b) carried by a common drive shaft (38c) driven step-by-step by a motor (42), said sprocket wheels being manually adjustable so that the space (1) between each drive member (50) of the first conveyor and the stop (86) of the second conveyor which immediately precedes this drive member (50) in the direction of travel of the first and second conveyors (26, 28) is equal to the length of the lower panel (18b) of the packaging body, characterized in that the motor (42) is driven step-by-step by a photo-electric cell (21) capable of stopping the motor each time a drive member (50) is positioned approximately in the vertical plane defined by the rear transverse wall (22a, 22b) of the magazine.

Description

La présente invention concerne la mise en volume de corps d'emballage en carton ou similaire, ayant la forme d'un parallélépipède rectangle.The present invention relates to the volume of packaging bodies made of cardboard or the like, having the shape of a rectangular parallelepiped.

Pour réduire l'encombrement de ces corps d'emballage lors de la fabrication, du stockage et du transport, il est habituel de les mettre à l'état aplati par pliage le long des arêtes d'articulation des panneaux latéraux, les volets d'extrémité étant disposés dans le prolongement des panneaux latéraux auxquels ils sont articulés.To reduce the size of these packaging bodies during manufacture, storage and transport, it is usual to put them in the flattened state by folding along the articulation edges of the side panels, the flaps end being arranged in the extension of the side panels to which they are articulated.

L'invention concerne une machine destinée à mettre en volume de tels corps d'emballage et qui puisse être utilisée aussi bien par le fabricant pour réaliser en série un conditionnement par mise en volume du corps d'emballage et insertion dans celui-ci, par exemple d'un croisillon de cloisonnement, que par un utilisateur pour remplir de produits le conditionnement ainsi réalisé, par mise en volume de ce conditionnement équipé ou non de croisillons et introduction des produits à conditionner.The invention relates to a machine intended to volume such packaging bodies and which can be used both by the manufacturer to carry out in series a packaging by volume setting of the packaging body and insertion therein, by example of a partitioning crosspiece, only by a user to fill with products the packaging thus produced, by volume of this packaging equipped or not with braces and introduction of the products to be packaged.

On connaît déjà dans la technique, des machines pour la mise en volume mécanisée de tels corps d'emballage, mais ces machines sont relativement volumineuses, de structure compliquée et surtout elles ne conviennent que pour un format bien défini d'emballage.We already know in the art, machines for the mechanized volume setting of such packaging bodies, but these machines are relatively bulky, of complicated structure and above all they are only suitable for a well-defined packaging format.

C'est ainsi par exemple que le brevet français n° 1 453 183 décrit une machine servant à mettre en volume des corps d'emballage en carton aplatis, et qui comprend un premier convoyeur horizontal à chaînes entraîné en continu et muni d'organes d'entraînement équidistants pour l'entraînement des corps d'emballage, un second convoyeur horizontal à chaînes disposé parallèlement au premier convoyeur mais décalé dans le sens d'entraînement, les brins inférieurs des chaînes sans fin de ce second convoyeur se déplaçant dans le même sens que les brins supérieurs des chaînes sans fin du premier convoyeur avec une vitesse inférieure à celui-ci et étant muni de butées équidistantes pour les corps d'emballage, et un troisième convoyeur horizontal à chaînes disposé dans le prolongement du premier convoyeur et sous le second convoyeur, qui est entraîné à la même vitesse que celui-ci et qui est muni d'organes d'entraînement équidistants.Thus, for example, French Patent No. 1,453,183 describes a machine used to volume flattened cardboard packaging bodies, and which comprises a first horizontal conveyor chain conveyed continuously and provided with organs '' equidistant drive for the packaging body drive, a second horizontal chain conveyor arranged parallel to the first conveyor but offset in the drive direction, the lower strands of the endless chains of this second conveyor moving in the same direction as the upper strands of the endless chains of the first conveyor with a speed lower than the latter and being provided with equidistant stops for the packaging bodies, and a third horizontal chain conveyor arranged in the extension of the first conveyor and under the second conveyor, which is driven at the same speed as the latter and which is provided with equidistant drive members.

Ainsi, un corps d'emballage à l'état aplati, placé entre un organe d'entraînement du premier convoyeur et une butée du second convoyeur, et avec ses lignes de pliage dirigées transversalement par rapport au sens d'avancement des convoyeurs, s'ouvre progressivement, puisque la distance entre l'organe d'entraînement et la butée diminue petit à petit. L'agencement est réglé pour qu'au moment où le corps d'emballage présente une section rectangulaire, l'organe d'entraînement du premier convoyeur s'escamote tandis qu'un organe d'entraînement du troisième convoyeur vient se substituer à lui. Le réglage des vitesses doit être réalisé avec une grande précision, car si l'on s'en écarte un tant soit peu, le corps d'emballage risque d'être écrasé entre l'organe d'entraînement et la butée qui l'encadrent. De même. il faudra régler minutieusement l'entr'axe entre les faces actives de l'organe d'entraînement du troisième convoyeur et de la butée du second convoyeur pour que le corps d'emballage garde sa section rectangulaire. De plus, l'adaptation de la machine pour la mise en volume de corps d'emballage de formats différents de celui pour lequel elle est réglée, est très difficile, voire impossible à effectuer, car il faudrait pour cela démonter les chaînes du second et du troisième convoyeurs et les remonter de façon que les organes d'entraînement et butées soient à l'écartement voulu conforme au nouveau format traité.Thus, a packaging body in the flattened state, placed between a drive member of the first conveyor and a stop of the second conveyor, and with its fold lines directed transversely to the direction of advance of the conveyors, s' opens gradually, since the distance between the drive member and the stop gradually decreases. The arrangement is adjusted so that when the packaging body has a rectangular section, the drive member of the first conveyor retracts while a drive member of the third conveyor comes to replace it. The adjustment of the speeds must be carried out with great precision, because if one deviates from it a little bit, the packaging body risks being crushed between the drive member and the stop which surrounds it. . Likewise. the spacing between the active faces of the drive member of the third conveyor and the stop of the second conveyor must be carefully adjusted so that the packaging body retains its rectangular section. In addition, the adaptation of the machine for the volume of packaging bodies of formats different from that for which it is adjusted, is very difficult, if not impossible to carry out, since this would require dismantling the chains of the second and of the third conveyors and reassemble them so that the drive members and stops are at the desired spacing in accordance with the new format processed.

En outre, la machine selon le brevet susmentionné nécessite un réglage en hauteur du second convoyeur par rapport au troisième convoyeur en fonction de la hauteur du corps d'emballage.In addition, the machine according to the aforementioned patent requires an adjustment in height of the second conveyor relative to the third conveyor as a function of the height of the packaging body.

Un autre inconvénient majeur de cette machine réside dans le fait que le corps d'emballage à l'état aplati, qui est extrait à la volée à la base d'un magasin de corps d'emballage empilés, a une forme légèrement cintrée, due au poids de la pile, si bien que lorsqu'il se trouve entre un organe d'entraînement et une butée, il risque de se cintrer davantage au lieu de s'ouvrir pour prendre sa forme parallélépipédique.Another major drawback of this machine is that the flattened packaging body, which is extracted on the fly at the base of a store of stacked packaging bodies, has a slightly curved shape, due the weight of the stack, so that when it is between a drive member and a stop, it may bend more instead of opening to take its parallelepiped shape.

Par le brevet US 4 254 604, on connaît une machine pour la mise en volume d'un corps d'emballage selon le préambule de la revendication 1, qui peut être accomodée pour traiter des corps d'emballage de formats différents. Toutefois, dans cette machine, le moteur est commandé en continu et entraîne l'arbre moteur des premier et second convoyeurs par l'intermédiaire d'une transmission extrêmement compliquée et encombrante destinée à transformer le mouvement continu du moteur en un mouvement pas à pas des premier et second convoyeurs.From US Pat. No. 4,254,604, a machine is known for setting up a packaging body according to the preamble of claim 1, which can be accommodated to process packaging bodies of different formats. However, in this machine, the motor is continuously controlled and drives the motor shaft of the first and second conveyors by means of an extremely complicated and bulky transmission intended to transform the continuous movement of the motor into a stepping movement of the first and second conveyors.

La présente invention permet de remédier à cet inconvénient et concerne à cet effet une machine selon la partie caractérisante de la revendication 1.The present invention overcomes this drawback and for this purpose relates to a machine according to the characterizing part of claim 1.

Les pignons du premier convoyeur sont calés sur ledit arbre moteur, tandis que ceux du second convoyeur sont formés sur un corps tubulaire qui est monté tournant fou autour dudit arbre, et qui peut être soit solidarisé, soit désolidarisé en rotation de ce dernier, grâce à la prévision d'un mécanisme d'accouplement déconnectable. qui comprend deux disques coaxiaux dentés disposés face à face avec leurs dentures en regard et montés tournants autour de leurs axes respectifs coaxiaux, lesdits disques étant respectivement reliés en mouvement, par l'intermédiaire de moyens de transmission de mouvement, a. un pignon calé sur l'arbre moteur et à un pignon solidaire du corps tubulaire, des moyens de commande étant prévus pour appliquer les disques l'un contre l'autre, de manière à rendre solidaires en mouvement le second convoyeur du premier, ou pour les écarter l'un de l'autre.The pinions of the first conveyor are wedged on said drive shaft, while those of the second conveyor are formed on a tubular body which is mounted idly rotating around said shaft, and which can be either secured, or disengaged in rotation from the latter, thanks to the provision of a disconnectable coupling mechanism. which comprises two toothed coaxial discs arranged face to face with their teeth facing one another and mounted to rotate about their respective coaxial axes, said discs being respectively connected in movement, by means of movement transmission means, a. a pinion wedged on the motor shaft and a pinion integral with the tubular body, control means being provided for applying the dis ques one against the other, so as to make the moving second conveyor of the first, or to separate them from one another.

Les organes d'entraînement peuvent être constitués par des barres transversales reliant les chaînes du premier convoyeur.The drive members can be constituted by transverse bars connecting the chains of the first conveyor.

Dans la position embrayée du mécanisme d'accouplement, le second convoyeur est entraîné solidairement avec le premier convoyeur. La distance entre les barres d'entraînement et les butées est réglée pour qu'à chaque arrêt du moteur, une butée se place sous le magasin à la verticale de la ligne de pliage séparant les deux panneaux inférieurs du corps d'emballage aplati se trouvant dans le magasin.In the engaged position of the coupling mechanism, the second conveyor is driven integrally with the first conveyor. The distance between the drive bars and the stops is adjusted so that each time the engine is stopped, a stop is placed under the magazine vertical to the fold line separating the two lower panels from the flattened packaging body located in the store.

La machine selon l'invention peut être adaptée au traitement de caisses de formats différents. Le procédé de réglage consiste à débrayer le second convoyeur du premier, à faire tourner ensuite à la main le second convoyeur indépendamment du premier convoyeur, jusqu'à ce que l'une des butées vienne se placer à la verticale de la ligne de pliage définie ci-dessus, puis à réembrayer le second convoyeur afin de le solidariser en rotation du premier convoyeur. Il en résulte qu'à chaque arrêt du moteur, une barre d'entraînement et une butée se trouvent positionnées sous le magasin à leur emplacement respectif défini ci-dessus.The machine according to the invention can be adapted to the treatment of cases of different formats. The adjustment process consists of disengaging the second conveyor from the first, then turning the second conveyor by hand independently of the first conveyor, until one of the stops comes to be positioned vertically over the defined fold line. above, then re-engage the second conveyor to secure it in rotation with the first conveyor. As a result, each time the engine is stopped, a drive bar and a stop are positioned under the magazine at their respective location defined above.

Selon un mode de réalisation préféré de l'invention, les butées sont constituées par des galets d'axe horizontal orienté transversalement par rapport au sens d'avancement des convoyeurs, lesdits galets étant montés tournants autour de leur axe, à l'extrémité supérieure de bras-supports verticaux fixés par leur partie centrale sur les chaînes du second convoyeur, un dispositif anti-retour étant prévu pour autoriser la rotation du galet dans le sens pour lequel la paroi inférieure avant du corps d'emballage aplati le fait rouler en descendant (en sens inverse des aiguilles d'une montre sur la fig. 1), mais pour interdire sa rotation en sens inverse.According to a preferred embodiment of the invention, the stops consist of rollers with a horizontal axis oriented transversely to the direction of advance of the conveyors, said rollers being mounted so as to rotate about their axis, at the upper end of vertical support arms fixed by their central part to the chains of the second conveyor, a non-return device being provided to allow the rotation of the roller in the direction for which the lower front wall of the flattened packaging body makes it roll down ( anticlockwise in fig. 1), but to prevent its rotation in the opposite direction.

Ainsi, lorsque le corps d'emballage qui se trouve à la base du magasin est entraîné vers le bas par le système d'extraction, sa ligne de pliage située en aval vient en appui contre la face interne de la barre d'entraînement qui se trouve en position sous le magasin, tandis que ladite paroi inférieure avant prend appui sur le galet. A mesure que le corps d'emballage descend, ladite paroi inférieure avant se redresse vers la position verticale en même temps qu'elle fait rouler le galet : le corps d'emballage prend progressivement sa forme parallélépipédique. Une fois qu'il l'a atteinte, il ne peut revenir à son état aplati étant donné que le galet ne peut tourner dans le sens pour lequel la paroi du corps d'emballage qui est à son contact tendrait à se dégager.Thus, when the packaging body which is at the base of the magazine is driven downwards by the extraction system, its fold line located downstream bears against the internal face of the drive bar which is located in position under the magazine, while said front bottom wall bears on the roller. As the packaging body descends, said lower front wall straightens towards the vertical position at the same time as it rolls the roller: the packaging body gradually takes its parallelepiped shape. Once it has reached it, it cannot return to its flattened state since the roller cannot rotate in the direction for which the wall of the packaging body which is in contact with it would tend to come off.

Selon un mode préféré de l'invention, le maintien de la caisse ainsi formée, dans sa forme parallélépipédique, peut être renforcé par le fait que la distance interne entre chaque barre d'entraînement et le galet situé immédiatement en amont dans le sens d'avancement des convoyeurs est choisie légèrement inférieure à la dimension longitudinale de la caisse équerrée et que les bras qui portent le galet sont montés pivotants et sont rappelés vers une position verticale par des moyens élastiques.According to a preferred embodiment of the invention, the maintenance of the box thus formed, in its parallelepiped shape, can be reinforced by the fact that the internal distance between each drive bar and the roller located immediately upstream in the direction of advancement of the conveyors is chosen slightly less than the longitudinal dimension of the squared box and that the arms which carry the roller are pivotally mounted and are returned to a vertical position by elastic means.

Il en résulte que sous l'action desdits moyens élastiques, le galet imprime sur la paroi sur laquelle il s'appuie, une déformation vers l'intérieur de la caisse, laquelle déformation s'oppose au retour de la caisse à son état aplati.It follows that under the action of said elastic means, the roller prints on the wall on which it is supported, a deformation towards the inside of the body, which deformation is opposed to the return of the body to its flattened state.

Selon un perfectionnement avantageux de l'invention, le magasin est équipé à sa base d'un système de retenue destiné à retenir la pile de corps d'emballage dans le magasin et à ne libérer que le corps d'emballage inférieur de la pile, au moment de son extraction. Ce système peut être constitué par exemple par un pignon entraîné en un mouvement de rotation alternatif, par des moyens moteurs synchronisés avec le mouvement alternatif du système d'extraction, ledit pignon attaquant deux crémaillères parallèles disposées de part et d'autre de l'axe du pignon et qui se terminent à une extrémité par des lames supports, l'ensemble du système étant monté horizontalement du côté de la paroi transversale amont du magasin de façon que l'une des lames supports soit légèrement en dessous du niveau du corps d'emballage inférieur de la pile et que l'autre lame support soit légèrement en dessous du niveau du corps d'emballage qui se trouve immédiatement au-dessus de lui. La synchronisation est réglée pour que, lorsque le système d'extraction amorce sa descente, le pignon tourne dans le sens pour lequel la lame support inférieure se rétracte du magasin et la lame support supérieure pénètre dans le magasin pour se placer sous le bord de l'avant-dernier corps d'emballage, et lorsque le système d'extraction commence à monter, le pignon tourne en sens inverse, intervertissant la position des lames supports.According to an advantageous improvement of the invention, the magazine is equipped at its base with a retaining system intended to retain the stack of packaging bodies in the magazine and to release only the lower packaging body from the stack, at the time of its extraction. This system can be constituted for example by a pinion driven in a reciprocating rotational movement, by motor means synchronized with the reciprocating movement of the extraction system, said pinion driving two parallel racks arranged on either side of the axis. of the pinion and which end at one end by support blades, the whole system being mounted horizontally on the side of the transverse wall upstream of the magazine so that one of the support blades is slightly below the level of the body the bottom packaging of the stack and that the other support blade is slightly below the level of the packaging body which is immediately above it. The synchronization is adjusted so that, when the extraction system begins to descend, the pinion rotates in the direction in which the lower support blade retracts from the magazine and the upper support blade enters the magazine to be placed under the edge of the '' penultimate packaging body, and when the extraction system begins to mount, the pinion rotates in the opposite direction, reversing the position of the support blades.

Avantageusement, la mise en forme peut être amorcée grâce à un préconformateur convexe situé à la partie inférieure du magasin au droit de la paroi inférieure avant du corps d'emballage aplati.Advantageously, the shaping can be initiated by means of a convex preformer located at the lower part of the magazine in line with the lower front wall of the flattened packaging body.

La machine suivant le mode de réalisation envisagé pour l'invention est de structure beaucoup plus simple que celle selon le brevet FR 1453183 mentionné précédemment puisqu'elle ne comporte que deux convoyeurs. De plus, elle permet de mettre en volume des corps d'emballage de formats différents et ce, moyennant des réglages extrêmement simples à effectuer. Contrairement à la machine selon ce brevet. aucun réglage en hauteur n'est nécessaire. De plus, le défaut de cintrage signalé précédemment pour la machine connue n'existe pas dans la machine selon le mode de réalisation de l'invention, étant donné que le corps d'emballage n'arrive pas à plat sur les convoyeurs pour être ensuite comprimé latéralement, mais il prend sa forme équerrée progressivement à mesure qu'il descend. D'autre part, à performances égales, la machine selon l'invention est beaucoup plus simple et moins encombrante que celle selon le brevet US 4 254 604.The machine according to the embodiment envisaged for the invention has a much simpler structure than that according to the patent FR 1453183 mentioned previously since it only comprises two conveyors. In addition, it makes it possible to volume packaging bodies of different formats and this, with extremely simple adjustments to be made. Unlike the machine according to this patent. no height adjustment is necessary. In addition, the bending defect previously reported for the known machine does not exist in the machine according to the embodiment of the invention, since the packaging body does not arrive flat on the conveyors and then be laterally compressed, but gradually takes on its squared shape as it descends. On the other hand, for equal performance, the machine according to the invention is much simpler and less bulky than that according to the U.S. Patent 4,254,604.

Un mode ce réalisation sera décrit à présent en détail à titre d'exemple non limitatif en regard des dessins annexés dans lesquels :

  • La figure 1 est une vue en élévation schématique de la machine selon l'invention ;
  • La figure 2 est une vue en plan de la machine, suivant la ligne de coupe II-ll de la figure 1 :
  • La figure 3 montre une vue à plus grande échelle du système de retenue de la figure 1 :
  • Les figures 4 à 6 sont des vues en élévation I!Iustrant trois phases successives du procédé de mise en forme du corps d'emballage.
One embodiment this embodiment will now be described in detail by way of nonlimiting example with reference to the appended drawings in which:
  • Figure 1 is a schematic elevational view of the machine according to the invention;
  • FIG. 2 is a plan view of the machine, along the section line II-II of FIG. 1:
  • Figure 3 shows an enlarged view of the restraint system of Figure 1:
  • Figures 4 to 6 are elevation views I ! Illustrating three successive phases of the shaping process of the packaging body.

Sur ces figures, les corps d'emballage sont résignes par la référence générale 10. le magasin contenant la pile verticale de corps d'emballage par la référence 12, le système d'extraction des corps d'emballage par la référence 14 et le moyen de convoyage des caisses mises en volume, par la référence générale 16.In these figures, the packaging bodies are resigned by the general reference 10. the magazine containing the vertical stack of packaging bodies by the reference 12, the system for extracting the packaging bodies by the reference 14 and the means for conveying crates placed in volume, by the general reference 16.

Comme on l'a déjà indiqué ci-dessus, les corps d'emballage aplatis 10 comprennent d'une part, quatre panneaux 18a, 18b, 18c, 18d destinés à former les parois latérales de l'emballage, ces panneaux étant articulés entre eux par des lignes de pliage 20, et d'autre part, des volets d'extrémité, non représentés, destinés à former le fond et la partie supérieure de l'emballage. Lorsque l'emballage est aplati, les volets d'extrémité sont disposés dans le prolongement des panneaux correspondants.As already indicated above, the flattened packaging bodies 10 comprise on the one hand, four panels 18a, 18b, 18c, 18d intended to form the side walls of the packaging, these panels being hinged together by fold lines 20, and on the other hand, end flaps, not shown, intended to form the bottom and the upper part of the package. When the packaging is flattened, the end flaps are arranged in the extension of the corresponding panels.

Le magasin 12 est constitué de quatre cornières verticales 22a, 22b, 22c et 22d entre lesquelles sont glissés les corps d'emballage aplatis 10 disposés de manière que leurs lignes de pliage soient dirigées perpendiculairement au sens de déplacement f du moyen de convoyage. Les cornières 22a et 22b disposées en amont par rapport audit sens de déplacement sont fixes, tandis que les cornières 22c et 22d peuvent être rapprochées ou écartées des cornières 22a et 22b en vue d'adapter la section transversale du magasin au format des corps d'emballage à mettre en volume.The magazine 12 consists of four vertical angles 22a, 22b, 22c and 22d between which are slid the flattened packaging bodies 10 arranged so that their fold lines are directed perpendicular to the direction of movement f of the conveying means. The angles 22a and 22b disposed upstream relative to said direction of movement are fixed, while the angles 22c and 22d can be brought closer or apart from the angles 22a and 22b in order to adapt the cross section of the magazine to the format of the bodies of packaging to be put into volume.

La pile de corps d'emballage est retenue, en amont, par un système de retenue 24 que l'on décrira en détail par la suite, et en aval, par un préconformateur 25 fixé à la base des cornières aval 22c, 22d.The stack of packaging bodies is retained, upstream, by a retaining system 24 which will be described in detail below, and downstream, by a preformer 25 fixed to the base of the downstream angles 22c, 22d.

Le système d'extraction 14 est disposé sous le magasin, à l'aplomb des panneaux 18b inférieurs aval des corps d'emballage aplatis. Il comprend quatre ventouses 23 reliées à un circuit à vide non représenté et portées par un plateau 27 qu'un système de vérin 30 permet de déplacer vers le haut et vers le bas.The extraction system 14 is arranged under the magazine, directly above the lower panels 18b downstream of the flattened packaging bodies. It comprises four suction cups 23 connected to a vacuum circuit not shown and carried by a plate 27 which a jack system 30 makes it possible to move up and down.

Le moyen de convoyage 16 est constitué de deux convoyeurs à chaînes comprenant chacun deux chaînes parallèles 32a, 32b et 34a. 34b respectivement, les chaînes 34a. 34b étant disposées entre les chaînes 32a, 32b et définissant avec ces dernières à leur partie supérieure un plan horizontal commun de convoyage.The conveying means 16 consists of two chain conveyors each comprising two parallel chains 32a, 32b and 34a. 34b respectively, the chains 34a. 34b being arranged between the chains 32a, 32b and defining with the latter at their upper part a common horizontal plane of conveyance.

Les chaînes 32a. 32b du premier convoyeur s'enroulent à l'extrémité amont dudit plan de convoyage, autour de pignons 36a, 36b reliés par un arbre 36c et situés en amont du mgasin 12 par rapport au sens de convoyage et à l'extrémité aval, autour de pignons moteurs 38a, 38b reliés par un arbre moteur 38c. Sur ce dernier est calé un pignon 40 qui est entraîné en rotation par un moteur 42 commande pas à pas au moyen d'une transmission 44. Les chaînes 32a et 32b s'enroulent. sous ledit plan 7e convoyage, autour de pignons de renvoi 46 et de pignons de tension 48 qui peuvent être déplaces de manière à permettre un réglage de la tension des chaînes. Elles sont reliées, à intervalles réguliers d, par des barres d'entraînement 50 disposées transversalement par rapport au sens d'avancement f des convoyeurs. Ces barres sont portées au-dessus du plan de convoyage du fait qu'elles sont fixées par leurs extrémités sur l'extrémité supérieure de plaquettes-supports verticales 52 dont la base est articulée sur des axes 54, 56 équipant les chaînes.Chains 32a. 32b of the first conveyor wind at the upstream end of said conveying plane, around pinions 36a, 36b connected by a shaft 36c and located upstream of mgasin 12 relative to the direction of conveyance and at the downstream end, around drive pinions 38a, 38b connected by a drive shaft 38c. On the latter is wedged a pinion 40 which is rotated by a motor 42 stepping control by means of a transmission 44. The chains 32a and 32b are wound. under said plane 7 th conveyor, around return sprockets 46 and tension sprockets 48 which can be moved so as to allow adjustment of the chain tension. They are connected, at regular intervals d, by drive bars 50 arranged transversely to the direction of travel f of the conveyors. These bars are carried above the conveying plane because they are fixed by their ends to the upper end of vertical support plates 52, the base of which is articulated on axes 54, 56 fitted to the chains.

En vue d'éviter toute contrainte sur les chaînes, au moment où les plaquettes-supports passent sur les pignons, l'un desdits axes au moins traverse une lumière 58, allongée dans le sens du déplacement des chaînes, qui est percée dans chacune des plaquettes-supports.In order to avoid any stress on the chains, at the moment when the support plates pass over the sprockets, at least one of said axes passes through a lumen 58, elongated in the direction of movement of the chains, which is pierced in each of the support plates.

Le mouvement pas à pas du moteur peut être commandé par tout moyen approprié, par exemple chaque fois que la face interne 50' d'une barre vient couper le faisceau lumineux d'une cellule photo-électrique 21 placée à l'aplomb du plan défini par les cornières amont 22a, 22b du magasin.The stepping movement of the motor can be controlled by any suitable means, for example each time the internal face 50 ′ of a bar cuts the light beam of a photoelectric cell 21 placed directly above the defined plane. by the upstream angles 22a, 22b of the store.

Ainsi, à chaque arrêt du moteur, une barre 50 se trouvera exactement positionnée avec sa face 50' dans le plan des cornières 22a, 22b, comme le montrent les figures 1 et 2. Cette position des barres d'entraînement est invariable quel que soit le format du corps d'emballage traité.Thus, at each engine stop, a bar 50 will be exactly positioned with its face 50 'in the plane of the angles 22a, 22b, as shown in Figures 1 and 2. This position of the drive bars is invariable whatever the format of the treated packaging body.

Les chaînes 34a, 34b du second convoyeur s'enroulent à leur extrémité amont autour de pignons 60a, 60b reliés par un arbre 60c, lesquels sont montés sous le magasin, légèrement en aval du système d'extraction 14. A leur extrémité aval, les chaînes 34a, 34b s'enroulent autour de pignons 62a, 62b reliés entre eux par un corps tubulaire 64. Le second convoyeur comporte également des pignons de renvoi 66 et des pignons de tension, non visibles sur les figures.The chains 34a, 34b of the second conveyor wind at their upstream end around sprockets 60a, 60b connected by a shaft 60c, which are mounted under the magazine, slightly downstream of the extraction system 14. At their downstream end, the chains 34a, 34b are wound around pinions 62a, 62b connected together by a tubular body 64. The second conveyor also includes return sprockets 66 and tension sprockets, not visible in the figures.

Dans le mode de réalisation de l'invention, l'ensemble des pignons 62a 62b et du corps tubulaire 64 est monté tournant fou autour de l'arbre moteur 38c du premier convoyeur, de sorte que le second convoyeur peut être rendu indépendant en rotation du premier convoyeur.In the embodiment of the invention, the set of pinions 62a 62b and of the tubular body 64 is mounted with idle rotation around the motor shaft 38c of the first conveyor, so that the second conveyor can be made independent in rotation of the first conveyor.

Pour le rendre solidaire en rotation, il est prévu un mécanisme d'accouplement qui peut être de tout type approprié. Dans l'exemple de réalisation illustré par les figures 1 et 2, il est constitué par un embrayage comportant deux disques coaxiaux 70, 72, montés tournants autour de leur axe respectif. Les faces des disques qui sont en regard sont pourvues de dentures complémentaires susceptibles de s'emboîter l'une dans l'autre lorsqu'un système de commande électromagnétique déplace axialement l'un des disques pour l'amener en contact avec l'autre. Sur les faces opposées à celles qui présentent les dentures, les disques 70, 72 portent des pignons 74, 76 qui sont respectivement reliés par des transmissions sans fin 78, 80 à des pignons 82, 84 respectivement solidaires de l'arbre moteur 38c et du corps tubulaire 64. Le fonctionnement de ce système d'embrayage sera expliqué par la suite.To make it integral in rotation, there is provided a coupling mechanism which can be of any suitable type. In the embodiment illustrated in Figures 1 and 2, it is constituted by a clutch comprising two coaxial discs 70, 72, mounted to rotate about their respective axis. The faces of the discs which are facing each other are provided with complementary toothing capable of fitting into one another when an electromagnetic control system that moves one of the discs axially to bring it into contact with the other. On the faces opposite those with the teeth, the discs 70, 72 carry pinions 74, 76 which are respectively connected by endless transmissions 78, 80 to pinions 82, 84 respectively secured to the motor shaft 38c and the tubular body 64. The operation of this clutch system will be explained below.

Les chaînes 34a, 34b du second convoyeur sont reliées à intervalles réguliers d, égaux à ceux séparant les barres 50, par des butées constituées par des galets 86 d'axe horizontal dirigé transversalement par rapport au sens d'avancement f du convoyeur. Chaque galet est monté tournant autour de son axe géométrique, matérialisé par deux tronçons de tige faisant saillie au centre de ses faces terminales. Ces tronçons de tige sont montés tourillonnants dans des trous formés à l'extrémité supérieure de deux plaquettes allongées verticales 88, elles-mêmes montées pivotantes dans un plan vertical parallèle aux chaînes 34a, 34b, autour d'un axe 90 (figure 1) porté par ces dernières et qui traverse lesdites plaquettes au voisinage de leur partie médiane. Ces dernières sont rappelées à leur position verticale au moyen d'un ressort de rappel 92 qui est tendu entre l'extrémité inférieure des plaquettes et un élément d'accrochage 93 solidaire de l'une des chaînes 34a ou 34b. Dans cette position, les galets 86 se trouvent au-dessus du plan de convoyage, sensiblement au même niveau que les barres d'entraînement 50. Un système anti-retour non représenté est prévu pour interdire aux galets de tourner autour de leur axe dans le sens des aiguilles d'une montre sur la figure 1, mais pour permettre leur libre rotation dans le sens inverse. La raison de cette mesuré apparaîtra par la suite.The chains 34a, 34b of the second conveyor are connected at regular intervals d, equal to those separating the bars 50, by stops constituted by rollers 86 with a horizontal axis directed transversely to the direction of advance f of the conveyor. Each roller is mounted rotating around its geometric axis, materialized by two sections of rod projecting at the center of its end faces. These rod sections are mounted journalled in holes formed at the upper end of two vertical elongated plates 88, themselves pivotally mounted in a vertical plane parallel to the chains 34a, 34b, around an axis 90 (Figure 1) carried by the latter and which passes through said plates in the vicinity of their middle part. The latter are returned to their vertical position by means of a return spring 92 which is stretched between the lower end of the plates and a hooking element 93 secured to one of the chains 34a or 34b. In this position, the rollers 86 are located above the conveying plane, substantially at the same level as the drive bars 50. A non-return system, not shown, is provided to prevent the rollers from rotating around their axis in the clockwise in Figure 1, but to allow them to rotate freely in the opposite direction. The reason for this measurement will appear later.

Le système de retenue 24 des corps d'emballage comprend, dans l'exemple de réalisation représenté sur la figure 3, un pignon 96 entraîné en rotation par exemple par un vérin rotatif et qui attaque deux crémaillères 98, 100 disposées parallèlement de part et d'autre de l'axe du pignon, de façon à ce qu'elles aient des mouvements de sens opposés. Chacune des crémaillères se termine à une extrémité par une lame 102. 104.The retaining system 24 for the packaging bodies comprises, in the embodiment shown in FIG. 3, a pinion 96 driven in rotation for example by a rotary actuator and which drives two racks 98, 100 arranged in parallel on either side 'other of the pinion axis, so that they have opposite direction movements. Each of the racks ends at one end with a blade 102. 104.

Le système de retenue est monté à la base du magasin à l'extérieur de celui-ci, du côté des cornières amont 22a, 22b et il est disposé de façon que les lames soient au-dessus l'une de l'autre et que l'une ou l'autre à la fois fasse saillie à l'intérieur du magasin pour supporter un corps d'emballage.The restraint system is mounted at the base of the magazine outside of it, on the side of the upstream angles 22a, 22b and it is arranged so that the blades are above one another and that either protrudes inside the store to support a packaging body.

Le vérin rotatif qui commande le pignon 96 est alimenté par la même source de fluide hydraulique que le vérin 30 du système d'extraction de manière que, lorsque le vérin 30 se détend vers le haut, le pignon 9 tourne dans le sens des aiguilles d'une montre sur la figure 3 et lorsque le vérin se rétracte, le pignon tourne en sens inverse. Le fonctionnement du système de retenue sera expliqué par la suite.The rotary actuator which controls the pinion 96 is supplied by the same source of hydraulic fluid as the actuator 30 of the extraction system so that, when the actuator 30 expands upward, the gear 9 rotates clockwise. 'a watch in Figure 3 and when the cylinder retracts, the pinion rotates in opposite directions. The operation of the restraint system will be explained later.

La machine selon l'invention ayant été complètement décrite, on expliquera à présent son mode de réglage en fonction du format du corps d'emballage à mettre en volume ainsi que son fonctionnement.The machine according to the invention having been completely described, we will now explain its adjustment mode according to the format of the packaging body to be set in volume as well as its operation.

Le réglage de la machine s'effectue comme suit : on écarte ou rapproche les cornières aval 22c, 22d des cornières amont 22a, 22b de manière à adapter la section transversale du magasin 12 à la surface des corps d'emballage aplatis 10 à mettre en volume.The adjustment of the machine is carried out as follows: the downstream angles 22c, 22d are removed or brought closer to the upstream angles 22a, 22b so as to adapt the cross section of the magazine 12 to the surface of the flattened packaging bodies 10 to be brought into position. volume.

Le moteur étant à l'arrêt, on règle ensuite la position angulaire relative du second convoyeur par rapport au premier convoyeur en séparant les deux disques 70, 72, puis en faisant tourner à la main le second convoyeur 28 jusqu'à ce que l'écartement intérieur entre les galets 86 et les barres d'entraînement 50 soit sensiblement égal à la dimension du panneau inférieur amont 18b du corps d'emballage aplati, en position dans le magasin, et enfin en réappliquant les deux disques l'un contre l'autre afin de rendre solidaires en mouvement les deux convoyeurs. On est ainsi assuré qu'à chaque arrêt des convoyeurs, une barre 50 et un galet 86 se trouveront correctement positionnés sous le magasin.With the engine stopped, the relative angular position of the second conveyor is then adjusted relative to the first conveyor by separating the two discs 70, 72, then rotating the second conveyor 28 by hand until the internal spacing between the rollers 86 and the drive bars 50 is substantially equal to the dimension of the upstream bottom panel 18b of the flattened packaging body, in position in the magazine, and finally by reapplying the two discs one against the other in order to make the two conveyors united in movement. It is thus ensured that at each stop of the conveyors, a bar 50 and a roller 86 will be correctly positioned under the magazine.

Le fonctionnement de la machine est le suivant : on met en marche le moteur 42. Celui-ci entraîne, par l'intermédiaire de la transmission 44 et du pignon 40, l'arbre moteur 38c et donc également le premier convoyeur 32a, 32b. Le mouvement de l'arbre moteur est transmis, par l'intermédiaire du pignon 82, de la transmission 78, du pignon 74, des disques 70, 72 en position embrayée, du pignon 76, de la transmission 80 et du pignon 84, au corps tubulaire 64 et donc au second convoyeur, lequel tourne donc en synchronisme et à la même vitesse que le premier convoyeur 32a, 32b.The operation of the machine is as follows: the motor 42 is started. The latter drives, via the transmission 44 and the pinion 40, the motor shaft 38c and therefore also the first conveyor 32a, 32b. The movement of the motor shaft is transmitted, via the pinion 82, the transmission 78, the pinion 74, the discs 70, 72 in the engaged position, the pinion 76, the transmission 80 and the pinion 84, to the tubular body 64 and therefore to the second conveyor, which therefore rotates in synchronism and at the same speed as the first conveyor 32a, 32b.

Lorsqu'une barre 50 arrive dans le plan des cornières amont 22a, 22b, elle coupe le faisceau lumineux émis par la cellule photo-électrique 21, ce qui provoque l'arrêt du moteur 42 et des convoyeurs 26, 28. Comme le montre la figure 4, le vérin 30 du système d'extraction amorce sa remontée. La lame 104 de la crémaillère inférieure se trouve alors en position avancée sous le corps d'emballage inférieur, tandis que la lame 102 de la crémaillère supérieure est en position rétractée, de sorte que toute la pile de corps d'emballage repose alors sur la lame 104 et sur le préconformateur 25.When a bar 50 arrives in the plane of the upstream angles 22a, 22b, it cuts the light beam emitted by the photoelectric cell 21, which causes the motor 42 and the conveyors 26, 28 to stop. As shown in FIG. Figure 4, the cylinder 30 of the extraction system begins its ascent. The blade 104 of the lower rack is then in the advanced position under the lower packaging body, while the blade 102 of the upper rack is in the retracted position, so that the entire stack of packaging body then rests on the blade 104 and on the pre-form 25.

Comme le montre la figure 5, les ventouses 23 viennent au contact du corps d'emballage à extraire. Dès que le vérin 30 amorce son mouvement de descente, le pignon 96 est entraîné en rotation dans le sens des aiguilles d'une montre, amenant ainsi la lame supérieure 102 en position avancée sous l'avant-dernier corps d'emballage de la pile, et la lame inférieure 104 en position rétractée. Le corps d'emballage inférieur ainsi libéré est entraîné par le vérin 30 vers le bas. Au cours de sa descente, il est conformé tout d'abord par le préconformateur 25 qui agit sur le panneau 18c à la manière d'une came (figure 6), puis par le galet 86, que ledit panneau 18c fait tourner dans le sens inverse des aiguilles d'une montre à mesure que le corps d'emballage descend. Lorsque le vérin 30 arrive au bout de sa course inférieure, il provoque la rotation du pignon 96 dans le sens inverse des aiguilles d'une montre, ce qui ramène le système de retenue dans sa position de départ illustrée à la figure 4, prêt pour un nouveau cycle de distribution.As shown in Figure 5, the suction cups 23 come into contact with the packaging body to be extracted. As soon as the jack 30 begins its downward movement, the pinion 96 is rotated clockwise, thereby bringing the upper blade 102 in the advanced position under the penultimate packing body of the stack , and the lower blade 104 in the retracted position. The lower packaging body thus released is driven by the cylinder 30 downwards. During its descent, it is shaped first by the pre-shaping device 25 which acts on the panel 18c in the manner of a cam (FIG. 6), then by the roller 86, which said panel 18c rotates anti-clockwise as the packaging body descends. When the jack 30 reaches the end of its lower stroke, it causes the pinion 96 to rotate anti-clockwise, which returns the restraint system to its starting position illustrated in FIG. 4, ready for a new distribution cycle.

Dans le but d'empêcher le corps d'emballage équerré, qui est représenté en traits discontinus sur la figure 6, de se dégager d'entre la barre 50 et le galet 86 pour reprendre sa forme aplatie, il est prévu dans le mode de réalisation de l'invention, de régler l'écart intérieur 1 entre chaque barre et le galet associé, à une valeur légèrement inférieure à la dimension du panneau 18b mesurée dans le sens de convoyage. De cette manière, lorsque le corps d'emballage se trouve à l'état équerré (figure 6), le galet 86, qui est rappelé vers sa position d'équilibre verticale par le ressort 92, incurve le panneau 18c contre lequel il s'appuie vers l'intérieur du corps d'emballage. On comprend qu'une telle déformation empêche le corps d'emballage de reprendre sa position aplatie.In order to prevent the squared packaging body, which is shown in broken lines in Figure 6, from being released between the bar 50 and the roller 86 to resume its flattened shape, it is provided in the mode of embodiment of the invention, to adjust the internal distance 1 between each bar and the associated roller, to a value slightly less than the dimension of the panel 18b measured in the conveying direction. In this way, when the packaging body is in the squared state (FIG. 6), the roller 86, which is returned to its vertical equilibrium position by the spring 92, curves the panel 18c against which it s presses towards the inside of the packaging body. It is understood that such deformation prevents the packaging body from returning to its flattened position.

Le retour à la position aplatie est également empêché grâce à la prévision d'un système anti-retour qui empêche le galet 86 de tourner dans le sens des aiguilles d'une montre, qui est précisément le sens dans lequel le panneau 18c aurait tendance à se dégager d'entre le galet et la barre d'entraînement associée.Return to the flattened position is also prevented by virtue of the provision of a non-return system which prevents the roller 86 from turning clockwise, which is precisely the direction in which the panel 18c would tend to clear between the roller and the associated drive bar.

Les deux convoyeurs se déplaçent ensuite en bloc à la même vitesse, entraînant la caisse en position équerrée et l'arrêtant soit en regard d'un dispositif d'insertion d'un croisillon prémonté, soit en regard d'un dispositif de remplissage dans lequel les produits à emballer sont introduits en position couchée.The two conveyors then move in a block at the same speed, driving the box in the squared position and stopping it either opposite a device for inserting a pre-assembled spider, or opposite a filling device in which the products to be packaged are introduced in the supine position.

Au même moment, la barre 50 et le galet 86 associé suivants prennent position sous le magasin, prêts à mettre en forme un nouveau corps d'emballage, suivant un cycle identique à celui qui vient d'être décrit.At the same time, the bar 50 and the following associated roller 86 take up position under the magazine, ready to form a new packaging body, following a cycle identical to that which has just been described.

Claims (8)

1. A machine for assembling packaging bodies of cardboard or the like, of the type comprising a magazine (12) in which the packaging bodies (10) are arranged in a pile in the flattened state, a suction extraction system (14) intended successively to extract the packaging bodies at the lower part of the magazine, a first chain-conveyor (26) arranged under the magazine and equipped with drive means (50) spaced out at regular intervals along the conveyor, and a second chain-conveyor (28) arranged parallel to the first conveyor and whose upper portions are situated between and in the same plane as those of the first conveyor and are fitted with stops (86) separated by uniform intervals (d) equal to those which exist between the drive members (50) of the first conveyor (26), the chains of the first and second conveyors rolling at their downstream end around sprocket wheels (38a, 38b and 62a, 62b) carried by a common drive shaft (38c) driven step-by-step by a motor (42), said sprocket wheels being manually adjustable so that the space (1) between each drive member (50) of the first conveyor and the stop (86) of the second conveyor which immediately precedes this drive member (50) in the direction of travel of the first and second conveyors (26, 28) is equal to the length of the lower panel (18b) of the packaging body, characterized in that the motor (42) is driven step-by-step by a photo-electric cell (21) capable of stopping the motor each time a drive member (50) is positioned approximately in the vertical plane defined by the rear transverse wall (22a, 22b) of the magazine.
2. A machine according to claim 1, characterized in that the sprocket wheels (38a, 38b) of the first conveyor (26) are fixed on the said drive shaft (38c), while those (62a, 62b) of the second conveyor (28) are formed on a tubular body (64), which is mounted so as to rotate loosely around the said shaft (38c) and which can either be rotationally united or disunited with this latter, owing to the provision of a disconnectable coupling mechanism (70, 72) comprising two coaxial toothed disks (70, 72) arranged face to face with their sets of teeth facing each other and mounted rotatably around their respective shafts, the said disks being respectively connected movably, through the intermediary of motion transmission means (78 ; 80), to a sprocket wheel (82) fixed on the drive shaft (38c) and to a sprocket wheel (84) integral with the tubular body (64), drive means being provided to apply the disks to each other to bring the motion of the second conveyor into unison with the motion of the first, or to separate them from each other.
3. A machine according to claim 1 or claim 2, characterized in that the stops of the second conveyor (28) consist of rollers (86) with horizontal axes orientated transversely with respect to the direction of travel of the conveyors, the said rollers being mounted rotatably around their axes, at the upper end of supporting arms (88) which are themselves pivotally mounted on the chains (34a, 34b) of the second conveyor (28) and drawn back into the vertical position by return springs (92), a non-return device being provided to allow the rotation of each roller in the direction in which the lower front wall (18c) of the flattened packaging body makes it roll as said body descends, but to prevent it from rotating in the reverse direction.
4. A machine according to any one of the preceding claims, characterized in that the inner distance (1) between each drive member (50) and the roller (86) immediately preceding it in the direction of travel of the first and second conveyors (26, 28) is adjusted so as to be slightly smaller than the size of the square packaging body measured in the direction of travel.
5. A machine according to any one of the preceding claims. characterized in that it comprises a retaining system 24 intended to retain the pile of packaging bodies r -he magazine and to free only the lower packaging body of the pile, at the moment of its extraction.
6. A machine according 10 claim 5, characterized in that the said retaining system consists of a pinion (96) driven with ar alternating rotary motion by drive means syncnronized with the alternating motion of the extraction system the said pinion driving two parallel racks (98, "00) arranged either side of the pinion axis and ending at one end in support portions (102, 104). the whole system being mounted horizontally at the side of the upstream transverse wall of the magazine (22a. 22b) in such a way that one of the support plates (104) is slightly below the level of the lower packaging body of the pile and the other support plate (102) is slightly below the level of the packaging body located immediately thereabove.
7. A machine according to claim 6, characterized in that the said pinion (96) is driven rotationally by a rotary jack fed in parallel on the feed circuit of the extraction system (14) in such a way that when this extraction system (14) starts its descent from its high position the pinion (96) turns in the direction in which lower support plate (104) retreats from the magazine and the upper support plate (102) penetrates the magazine and positions itself below the edge of the penultimate packaging body, and when the extraction system begins to rise the pinion (96) turns in the reverse direction, reversing the position of the support plates.
8. A machine according to any one of the preceding claims, characterized in that it comprises a convex conformer (25) located at the lower part of the magazine (12) at right angles with the lower front wall of the flattened packaging body.
EP84400466A 1983-03-09 1984-03-08 Machine for setting up, holding and transferring cardboard packing boxes Expired EP0122174B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84400466T ATE23972T1 (en) 1983-03-09 1984-03-08 MACHINE FOR ERECTING, HOLDING AND FEEDING CARDBOARD PACKAGING BOXES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8303867 1983-03-09
FR8303867A FR2542282B1 (en) 1983-03-09 1983-03-09 MACHINE FOR VOLUMING, HOLDING AND TRANSFERRING CARTON PACKING BODY AND METHOD FOR ADJUSTING SUCH A MACHINE TO ADAPT IT TO PACKING BODIES OF DIFFERENT FORMATS

Publications (2)

Publication Number Publication Date
EP0122174A1 EP0122174A1 (en) 1984-10-17
EP0122174B1 true EP0122174B1 (en) 1986-12-03

Family

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Application Number Title Priority Date Filing Date
EP84400466A Expired EP0122174B1 (en) 1983-03-09 1984-03-08 Machine for setting up, holding and transferring cardboard packing boxes

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EP (1) EP0122174B1 (en)
AT (1) ATE23972T1 (en)
DE (1) DE3461519D1 (en)
ES (1) ES530460A0 (en)
FR (1) FR2542282B1 (en)
PT (1) PT78204B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2059230B1 (en) * 1992-04-06 1997-11-16 Cuchi Torn Rafael PNEUMATIC MACHINE FOR MANUFACTURING CARDBOARD CONTAINERS.
DE4314632C2 (en) * 1993-05-04 1996-12-19 Uhlmann Pac Systeme Gmbh & Co Conveying device for objects in packaging machines, in particular for folding boxes
CN106395004A (en) * 2016-11-28 2017-02-15 张家港爱铝铝箔科技有限公司 Carton conveying device and cartoning machine
CN113696538B (en) * 2021-08-31 2023-11-10 常州三源光伏材料有限公司 Processing device for corrugated paper packaging box manufacturing

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037431A (en) * 1955-02-03 1962-06-05 King O Matic Equipment Corp Carton feeding, frecting and filling mechanism
US3040634A (en) * 1960-04-27 1962-06-26 Fmc Corp Carton set-up mechanism
US3138076A (en) * 1961-07-03 1964-06-23 Cal Crown Corp Carton erecting and closing machine
FR1453183A (en) * 1965-11-10 1966-04-15 Unilever Nv Machine for opening flattened tubular cardboard boxes
FR1469645A (en) * 1966-01-10 1967-02-17 R A Jones & Company Inc Cardboard box handling mechanism for boxing machines
GB1489799A (en) * 1975-05-21 1977-10-26 Portion Packaging Ltd Cartonning apparatus
US4254604A (en) * 1979-01-02 1981-03-10 Redington Inc. Cartoner and product infeed conveyor therefor

Also Published As

Publication number Publication date
ES8500842A1 (en) 1984-11-01
PT78204B (en) 1986-04-23
EP0122174A1 (en) 1984-10-17
ES530460A0 (en) 1984-11-01
FR2542282A1 (en) 1984-09-14
PT78204A (en) 1984-04-01
DE3461519D1 (en) 1987-01-15
ATE23972T1 (en) 1986-12-15
FR2542282B1 (en) 1985-08-16

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