EP0900737A1 - Device for laying and perforating a flexible reinforcing and/or guiding strip, process and packaging container resulting from this process - Google Patents

Abstract

The machine, designed for fixing a supple reinforcing/guide strip (16) to a moving cardboard box panel (14), consists of a strip fitting assembly (22) and a perforator assembly (24). The strip fitting assembly comprises a support (36) for a reel (40) of the supple strip, and positioning and fixing components (46, 48, 50,52). The perforator assembly (24) is mounted on the main frame (12) of the machine after and in line with the fitting assembly, and comprises a wheel which rotates about a horizontal axis and has a toothed edge (56) which penetrates the cardboard panel and, if necessary, the supple strip to make a perforated line. Cutters (60,62) trim the supple strip to the required length.

Description

The present invention relates to a device for laying and perforation of a flexible reinforcement and / or guide strip, a corrugating comprising this device, and a method for laying and perforation of a strip using this device and a packaging case from of this process.

There are many packaging cases on the market, in particular in corrugated cardboard, the opening or separation of which two parts, one of which can later be used as a display, is made using a flexible reinforcement and / or guide strip arranged generally inside the body along the side walls and at a generally constant height from the bottom of the body.

These boxes are also provided with at least one line of perforations, which follows the aforementioned strip by crossing it even sometimes, this line of perforations serving as a precut line, i.e. a line guide provided with rupture primers for the aforementioned opening of the checkout.

The manufacturing techniques of the prior art allow the installation of such a strip and its perforation, combined with the perforation of the wall in cardboard, in two separate operations each carried out on a machine different. Indeed, known corrugating machines only allow that the sheet of corrugated cardboard, fully formed, scrolls until it reaches a station allowing the addition of a self-adhesive strip depending on the direction longitudinal or running direction of the web. According to this technique of previous manufacture, after cutting a plate in the sheet of corrugated cardboard and making creases and grooves forming lines of pre-folding for the subsequent assembly of the body, the plate thus formed is placed on a rotary press or cutter fitted with a serrated blade which is applied against the plate in order to perforate the strip and its support in cardboard.

This method of the prior art has the disadvantage of achieving the laying and perforating the strip laid on the plate in two stages separate requiring two different machines, resulting in a cost price important and successive manipulations. In addition, this technique anterior requires precise positioning between the blade of the press or rotary cutter and the plate on which the strip to be mounted is mounted perforated so that all the teeth of the blade penetrate the strip and the cardboard in a substantially identical transverse position relative to the edge of the strip and do not miss the strip if the strip is also to be perforated. In practice, we use a relatively wide band and the results obtained are not uniform due to significant variations in the transverse position of the perforations along the strip.

The invention aims to provide a device for laying and perforating a flexible reinforcement and / or guide strip, which can be adapted on a corrugating machine and overcoming the disadvantages above of the technique used in the prior art.

• un ensemble de pose de la bande, monté sur ledit châssis et comportant :
  • des moyens de support d'une bobine montée rotative et sur laquelle est enroulée ladite bande, et
  • des moyens de positionnement et de fixation de la bande permettant de monter sur la nappe la bande arrivant parallèlement à la direction longitudinale;
• un ensemble de perforation, monté sur le châssis principal en aval et en alignement longitudinal avec ledit ensemble de pose et comportant une molette montée rotative sur un axe horizontal perpendiculaire à la direction longitudinale, présentant une tranche munie de dents de perforation, et placée dans une position transversale par rapport au châssis principal telle que les dents soient à proximité, et éventuellement en regard, de la bande, ladite molette étant apte à être placée à une hauteur telle que les dents pénètrent dans la nappe pour réaliser une ligne de perforations traversant la nappe, et éventuellement la bande ;et
• des moyens de coupe de la bande.

This objective is achieved according to the present invention by means of a device for laying and perforating a flexible reinforcing and / or guiding strip having a face capable of adhering to an upper face of a material in a traveling web, according to a longitudinal direction, along a main chassis provided with a mechanism for driving said ply, comprising:

• a strip laying assembly, mounted on said chassis and comprising:
  • means for supporting a coil mounted to rotate and on which said strip is wound, and
  • means for positioning and fixing the strip making it possible to mount the strip arriving parallel to the longitudinal direction on the sheet;
• a perforation assembly, mounted on the main frame downstream and in longitudinal alignment with said installation assembly and comprising a rotary wheel mounted on a horizontal axis perpendicular to the longitudinal direction, having a wafer provided with perforation teeth, and placed in a transverse position relative to the main frame such that the teeth are close to, and possibly opposite, the strip, said wheel being able to be placed at a height such that the teeth penetrate into the ply to produce a line of perforations crossing the tablecloth, and possibly the strip; and
• means for cutting the strip.

We understand that this device is particularly advantageous in that it makes it possible to carry out successively the positioning, fixing and then linear perforation of a flexible strip of reinforcement and / or guide. So, since the same device performs these two operations, these are carried out almost simultaneously, without manipulation between these two operations so this transformation step is done quickly, at a relatively low cost, and ensuring the line of perforations is perfectly aligned with the strip, the perforations being evenly distributed along the strip and all similar.

The present invention also relates to a machine for undulating comprising at least one device of the type which has just been described, placed along the corrugator at a location corresponding to the end of the production of the sheet, characterized in that the said sheet of material is made of double-sided corrugated cardboard, in that said tablecloth drive mechanism and said main chassis belong to said waving machine and in that said mechanism drive has a variable drive speed.

When the web material is corrugated cardboard, the incorporation of the device for laying and perforating the tape directly on the corrugating machine saves a lot of time the two operations. In addition, the quality of the cut is improved by the fact that it is carried out hot at the outlet of the line manufacture of corrugated cardboard. In addition, performing the perforation directly on the corrugating machine facilitates alignment between the perforation line and the strip and therefore reduces the number of different transformation for the realization of objects, such as cases from the corrugated cardboard tablecloth, which generates reduction in the cost price of these objects.

• on fournit un ensemble de pose de la bande, monté sur ledit châssis et comportant :
  • des moyens de support d'une bobine montée rotative et sur laquelle est enroulée ladite bande, et
  • des moyens de positionnement et de fixation de la bande permettant de monter sur la nappe un tronçon de bande arrivant parallèlement à la direction longitudinale;
• on insère la bande dans les moyens de positionnement et de fixation de la bande ;
• on fournit un ensemble de perforation de la bande monté sur le châssis principal en aval et en alignement longitudinal avec ledit ensemble de pose et comportant une molette montée rotative sur un axe horizontal perpendiculaire à la direction longitudinale, présentant une tranche munie de dents de perforation et placée dans une position transversale par rapport au châssis principal telle que les dents soient à proximité, et éventuellement en regard, de la bande;
• on fournit des moyens de coupe de la bande ;
• on active le mécanisme d'entraínement afin de faire défiler la nappe ;
• on positionne la molette à une à une hauteur telle que les dents pénètrent dans la nappe pour réaliser une ligne de perforations traversant la nappe, et éventuellement la bande ; et
• on active lesdits moyens de coupe lorsqu'une extrémité libre de la nappe arrive au niveau dudit ensemble de perforation ou lorsque la nappe est recouverte dune longueur voulue de bande.

The invention also relates to a method of laying and perforating a flexible reinforcing and / or guiding strip having a face capable of adhering to an upper face of a material in traveling web, in a longitudinal direction, the along a main chassis provided with a mechanism for driving said ply, comprising the following steps:

• a strip laying assembly is provided, mounted on said chassis and comprising:
  • means for supporting a coil mounted to rotate and on which said strip is wound, and
  • means for positioning and fixing the strip enabling a section of strip arriving parallel to the longitudinal direction to be mounted on the sheet;
• the strip is inserted into the means for positioning and fixing the strip;
• a strip perforation assembly is provided mounted on the main chassis downstream and in longitudinal alignment with said laying assembly and comprising a knurl mounted for rotation on a horizontal axis perpendicular to the longitudinal direction, having a section provided with perforation teeth and placed in a transverse position relative to the main frame such that the teeth are close to, and possibly opposite, the strip;
• means for cutting the strip are provided;
• we activate the drive mechanism to scroll the tablecloth;
• the thumbwheel is positioned at a height such that the teeth penetrate the sheet to produce a line of perforations crossing the sheet, and possibly the strip; and
• said cutting means are activated when a free end of the ply arrives at said perforation assembly or when the ply is covered with a desired length of strip.

• on fournit des premiers moyens de moyens de déplacement permettant de décaler au moins transversalement ledit ensemble de pose de la bande par rapport audit châssis et des deuxièmes moyens de déplacement permettant de décaler au moins transversalement ledit ensemble de perforation par rapport audit châssis ;
• on fournit des premiers moyens de détection de la position transversale relative entre la nappe et le châssis et des moyens de commande apte à commander lesdits premiers et lesdits deuxièmes moyens de déplacement ;
• on fournit des deuxièmes moyens de détection de la position transversale relative entre lesdits moyens de positionnement et de fixation de la bande et la nappe ;
• on asservit la position dudit ensemble de pose et dudit ensemble de perforation aux fluctuations de la position transversale de la nappe par rapport audit châssis grâce auxdits premiers moyens de détection ;et,
• on asservit la position transversale dudit ensemble de perforation à la position transversale de la bande par rapport à la nappe grâce auxdits deuxièmes moyens de détection, de manière à contrôler la position de la ligne de perforations.

Furthermore, it is expected that this method further comprises the following steps:

• first means of displacement means are provided making it possible to offset at least transversely said assembly for laying the strip with respect to said chassis and second displacement means making it possible to offset at least transversely said perforation assembly with respect to said chassis;
• first means of detecting the relative transverse position between the ply and the chassis and control means capable of controlling said first and said second displacement means are provided;
• second means are provided for detecting the relative transverse position between said means for positioning and fixing the strip and the sheet;
• the position of said laying assembly and of said perforation assembly is controlled by fluctuations in the transverse position of the ply relative to said chassis by means of said first detection means; and,
• the transverse position of said perforation assembly is controlled by the transverse position of the strip with respect to the sheet by means of said second detection means, so as to control the position of the line of perforations.

The invention also relates to a defined packaging case according to claim 15.

The invention will be better understood, and secondary characteristics and their advantages will become apparent during the description of a mode example given below.

It is understood that the description and the drawings are given only indicative and not limiting.

• la figure 1 est une vue de côté schématique partiellement transparente d'une partie d'une machine à onduler comprenant le dispositif selon la présente invention ;
• la figure 2 est une vue simplifiée en perspective du dispositif de pose et de perforation selon la présente invention placée sur une machine à onduler telle qu'illustrée sur la figure 1 ;
• la figure 3 est une vue en perspective de côté agrandie du dispositif représenté à la figure 2 ;
• la figure 4 illustre schématiquement une variante de réalisation d'une machine à onduler comportant plusieurs dispositifs pour la pose et la perforation d'une bande souple de renfort et/ou de guidage ;
• la figure 5 représente un flan réalisé à partir d'une plaque en carton découpée et perforée dans une nappe en carton ondulé sur laquelle a été posée une bande grâce au dispositif et conformément au procédé selon la présente invention ;
• la figure 6 est une vue en perspective d'une caisse d'emballage montée, sa partie supérieure étant ouverte et prête à recevoir des objets, cette caisse étant réalisée à partir du flan de la figure 5 ;
• la figure 7 est une vue en perspective de la caisse de la figure 6 après que celle-ci a été remplie de produits et fermée ;
• la figure 8 représente la caisse de la figure 7 au début de l'opération de séparation entre les deux parties de la caisse ;
• la figure 9 représente la caisse de la figure 8 après complète séparation entre les deux parties de la caisse ;
• la figure 10 représente la partie utile de la caisse de la figure 9, cette partie utile constituant un dispositif de présentation pour les produits contenus initialement dans la caisse ;
• les figures 11 et 12 représentent en perspective, respectivement depuis sa face avant et depuis sa face arrière, une boíte avec charnière avant la séparation entre le couvercle et le reste de la boíte ;
• les figures 13 et 14 sont des vues transparentes correspondant respectivement aux figures 11 et 12 ;
• la figure 15 est une vue identique à celle de la figure 11 représentant le début de la séparation entre le couvercle et le reste de la boíte ; et
• la figure 16 représente la boíte avec charnière de la figure 15 après séparation entre le couvercle et le reste de la boíte, le couvercle étant maintenu sur la boíte par une charnière constituée par une portion de la paroi en carton et un tronçon de l'élément longitudinal.

Reference is made to the appended drawings, in which:

• Figure 1 is a partially transparent schematic side view of part of a corrugating machine comprising the device according to the present invention;
• Figure 2 is a simplified perspective view of the laying and perforating device according to the present invention placed on a corrugating machine as illustrated in Figure 1;
• Figure 3 is an enlarged side perspective view of the device shown in Figure 2;
• FIG. 4 schematically illustrates an alternative embodiment of a corrugating machine comprising several devices for laying and perforating a flexible reinforcement and / or guide strip;
• FIG. 5 represents a blank made from a cardboard plate cut out and perforated in a corrugated cardboard sheet on which a strip has been placed using the device and in accordance with the method according to the present invention;
• Figure 6 is a perspective view of a mounted packing case, its upper part being open and ready to receive objects, this case being made from the blank of Figure 5;
• Figure 7 is a perspective view of the box of Figure 6 after it has been filled with products and closed;
• Figure 8 shows the box of Figure 7 at the start of the separation operation between the two parts of the box;
• Figure 9 shows the box of Figure 8 after complete separation between the two parts of the box;
• FIG. 10 represents the useful part of the box of FIG. 9, this useful part constituting a presentation device for the products initially contained in the box;
• Figures 11 and 12 show in perspective, respectively from its front face and from its rear face, a box with hinge before the separation between the cover and the rest of the box;
• Figures 13 and 14 are transparent views corresponding respectively to Figures 11 and 12;
• Figure 15 is a view identical to that of Figure 11 showing the beginning of the separation between the cover and the rest of the box; and
• Figure 16 shows the box with hinge of Figure 15 after separation between the cover and the rest of the box, the cover being held on the box by a hinge constituted by a portion of the cardboard wall and a section of the element longitudinal.

If we refer to Figure 1, we can see a section longitudinal of a corrugating machine 10 comprising a main frame 12 extending in a longitudinal direction X, along which are carried out successively (upstream of Figure 1) all operations leading to the production of a sheet of double-sided corrugated cardboard 14. This ply 14 is intended to be covered by a flexible strip 16 of reinforcement and / or guide used, in particular, to facilitate opening and, possibly separation into two parts, of a packing case made from the web 14 as will be described in detail below.

This strip 16 is mounted on the sheet 14 at a device for laying and perforating 20, illustrated schematically in Figure 1. The scrolling of the web 14 along the machine waving 10 is ensured by means of a drive mechanism produced under the form of drive rollers 18 rotatably mounted around axes parallel to a transverse direction Y, the speed of rotation of the rollers leading, among the drive rollers, being variable and adjustable.

When passing through the device 20, the ply of corrugated board 14 passes successively under a laying assembly 22 of the strip 16 and under a perforation assembly 24. At the outlet of the device 10, the ply 14 is coated with a strip 16 and carries a line of perforations crossing the water table and possibly also pierce the band 16.

As can be seen in Figure 2, in order to mount the assembly 22 and the perforation assembly 24 on the chassis 12 of the machine waving 10, two guide rails 26 are arranged transversely above the chassis, these guide rails 26 being shaped to allow horizontal transverse translation by sliding, respectively of the installation assembly 22 and the perforation assembly 24 relative to the chassis 12.

A number of different mechanisms can be used in order to control and carry out the transverse movement of the assemblies 22 and 24 along their associated guide rail 26. For example, each rail guide 26 may be provided at one of its ends with a motor control forming motor means whose activation sets in motion of rotation an output shaft, this being connected to transmission means of the movement comprising a drive shaft. In Figure 2, these transmission means also include a belt transmission 28 for transforming the rotational movement of said drive shaft in a transverse rectilinear translational movement of one of the assemblies relative to the associated guide rail. For this, the two sets 22 and 24 are each connected to a belt 28 extending transversely above the chassis 12 and mounted around two wheels 29 which one, leading, is integral with the shaft of transmission.

The guide rails 26, the control motors, their shaft output and their associated drive shaft (not shown), the wheels 29 and the transmission belts 28 belong to first and second means of displacement making it possible to shift the less transversely, respectively said installation assembly 22 and said perforation assembly 24 relative to said chassis 12. These first and second means of movement may include other mechanisms displacement capable of moving the sets 22 and 24 in other directions. For example, it can be provided that the guide rails 26 are movable along the chassis 12 in order to move longitudinally, that is to say along the X axis, the sets 22 and 24. It is also possible to provide the vertical displacement of the assemblies 22 and 24, for example by the vertical movement of the guide rails 26 relative to the chassis 12, the rails 26 being integral with the drive wheels 29 serving as a support for the transmission belts 28, which are themselves integral with the sets 22 and 24.

As can be seen in Figures 2 and 3, the set of pose 22 includes a frame 30 serving as support for the various elements of the installation assembly 22. This frame 30 is provided with a slide 32 able to cooperate by sliding on one of the guide rails 26, the frame 30 thus being supported by this rail 26, and a connecting piece 34 driven, integral with a section of the associated transmission belt 28 to the installation assembly 22. The upper part of the frame 30 comprises means for supporting a spool in the form of a spool-carrying part 36 comprising two vertical notches 38 open upwards and allowing receiving the ends of the axis 42 of the coil 40 carrying the strip 16.

Figures 2 and 3 show two alternative embodiments of the device 20, the fixed link between the frame 30 and the slide 32, each of sets 22 and 24, being located much lower in the case of Figure 2 only for the variant of Figure 3 according to which the slides 32 are at the same height as the reel holder part 36.

Under the reel holder part 36, that is to say downstream of the latter, there are provided means for guiding the strip intended to bring the strip 16 in the longitudinal direction X and in the direction of travel of the ply 14, so as to place the face of the strip 16 capable of adhering opposite of the upper face of the ply 14. In fact, the strip, preferably self-adhesive, has a side covered with glue which must be applied look of the upper face of the ply 14 while maintaining the section of the strip 16 arriving above the sheet 14 parallel to the direction X.

These guide means comprise a first guide 44 formed a ring secured to the frame 30 through which the strip 16 and a second guide 46 formed by a plate secured to the frame 30 and provided a slot 47 in which the strip 16 passes after the first guide 44. The guide means further comprise a third guide 48 produced under the shape of a guide roller mounted to rotate about a horizontal axis perpendicular to the longitudinal direction X. This guide roller 48 has a peripheral groove 49 in which is intended to come accommodate the strip 16, the face of the strip 16 not coated with adhesive resting against the bottom of the groove 49 of this guide roller 48.

We understand that the slot 47 of the second guide 46 is parallel in the transverse direction Y and is located above the guide roller 48 so that the strip 16 is placed correctly before reaching the guide roller 48.

To bring the strip 16 closer to the upper face of the ply 14, at the outlet from the guide roller 48, the guide means comprise, at in addition, a fourth guide 50 produced in the form of a plate provided with a passage 51 treated so that the adhesive of the strip 16 does not adhere and in which passes tape 16.

The means for guiding the aforementioned strip (44, 46, 48 and 50) are placed upstream of the band connecting means produced under the shape of a pressure roller 52 rotatably mounted on a horizontal axis perpendicular to the longitudinal direction X, placed downstream of the means of guidance, and movable between a high position and a low position in which this pressure roller 52 is in abutment on the upper face of the ply 14 by exerting sufficient pressure on the portion of the strip which is between the ply 14 and this roller 52 so that the strip 16 adheres to said face top of the sheet 14.

Said installation assembly 22 therefore further comprises means for lowering or raising the pressure roller 52 (means not represented).

All means for guiding the strip (44, 46, 48 and 50) have a transverse degree of freedom relative to the frame 30 in view of their optimum positioning for feeding and guiding the strip 16 up to the pressure roller 52. Preferably, the guide roller 48 bears on its periphery two grooves having a different width, each of them being provided for the passage of a self-adhesive strip 16 of width different, preferably 6 mm or 12 mm in width. Preferably, ends of the plate 50 extend from a lower generatrix of the guide roller 48 and up to a lower lateral generator of the roller presser 52.

In FIG. 3, the pressure roller 52 is shown in its position high.

Preferably, the reel-carrying part 36 constituting the means for supporting the coil 40, is arranged above the means for guide 44, 46, 48 and 50 and of the pressure roller 52, the assembly forming means for positioning and fixing the strip, so that the axis of rotation of the coil 42 is horizontal and perpendicular with respect to the longitudinal direction X.

The perforation assembly 24 also includes a frame 30 slidingly mounted on a guide rail 26 associated with the same so that the armature 30 of the installation assembly 22, so that the corresponding elements have the same reference numbers and do not are not described again.

A wheel 54, composed of a toothed wheel mounted to rotate on a horizontal axis perpendicular to the longitudinal direction X, is mounted in the lower part of the frame 30 of the perforation assembly 24. Advantageously, the wheel 54 can be moved vertically, either independently of the reinforcement 30, that is to say in solidarity with the latter, so that you can adjust the penetration depth of the teeth perforation 56 in the ply 14 and, optionally the strip 16. The teeth of perforation 56 are distributed radially at a constant distance from each other another on the edge of the wheel of the wheel 54.

The perforation assembly 24 is advantageously placed downstream and in alignment with the fitting assembly 22 so that the thumb wheel 54 is longitudinally aligned with the pressure roller 52: in this way, we obtains the simultaneous perforation of the strip 16 glued on the upper face of the sheet 14 and of the sheet itself.

It is advantageously possible to adjust, by slaving, the transverse position of the wheel 54 on the transverse position of the roller presser 52 as will be explained below in order to obtain a line of perforations 58 located parallel and at a constant distance from the edge longitudinal of the strip 16.

The incorporation of the device 20 for laying and perforating according to the present invention at a corrugating machine 10 allows, in in addition, bonding and perforation on a still warm sheet of so that the penetration of the teeth 56 in the strip 16 and in the ply 14 is is easier: you get clear through holes and precise.

In the same way as the pressure roller 52, the wheel 54 can be moved transversely, alone or in relation to the reinforcement 30, by relative to the chassis 12. Thus, by transversely positioning the assembly of perforation 24 relative to the installation assembly 22, one can choose to very precisely the transverse location of the line of perforations 58 relative to the strip 16, this line of perforations 58 lying on or at side of the strip 16 glued to the upper face of the ply 14.

The device 20 according to the present invention is also provided means for cutting the strip 16 which may be present in various shapes. Advantageously, the cutting means comprise a device to movable blade, not shown, disposed at the outlet of the coil 40 for cutting strip 16 not laid. In Figures 2 and 3, is shown so schematic a first cutting system 60 placed downstream and in alignment longitudinal with respect to the positioning and fixing means 44, 46, 48, 50 and 52, in particular in alignment with the pressure roller 52, in order to allow transverse sectioning of the strip 16 laid and glued to the upper face of the ply 14.

The cutting means also advantageously comprise a second cutting system 62 placed downstream and in alignment longitudinal with respect to the wheel 54 in order to allow cutting transversely the strip 16 laid, that is to say glued, on the face upper side of the ply 14, said strip 16 possibly being perforated, that is to say crossed by the line of perforations 58.

When the web 14 scrolls along the main chassis of the waving machine, this sheet 14 undergoes position fluctuations which could prove detrimental to the positioning of the strip 16 on this ply 14. To overcome this drawback, the device 20 according to the present invention is provided with servo means (not shown) of the transverse position of the assemblies 22 and 24. Indeed, it provision is made for the device 20 to comprise first detection means of the relative transverse position between the ply 14 and the chassis 12 generating information supplied to control means. These means of control are able to control the first means of movement and the second means of movement, in particular the motors of control causing the movement of the transmission belts 28, so to control the transverse position of the installation assembly 22 and of the assembly of perforations 24 to fluctuations in the transverse position of the ply 14 relative to the chassis 12. Thus, it is understood that the assemblies 22 and 24 follow the transverse offset of the ply 14 so that the laying of the strip 16 and the production of the perforation line 58 is always carried out at level of a predetermined transverse position relative to the free edge longitudinal of the ply 14.

Whether the line of perforations 58 is made on or next to the strip 16, it is necessary to check the position of this line of perforations 58 throughout its production. To do this, the device according to the present invention further comprises second detection means of the relative transverse position between the positioning means and fixing the strip, that is to say essentially the pressure roller 52, and the ply 14 in order to control the transverse position of the perforation assembly 24, i.e. the position of the wheel 54, at the transverse position of the strip 16 with respect to the ply 14.

Thus, the adjustment automations which have just been succinctly presented allow an automatic correction of the clearances (offset transverse of the assemblies 22 and 24) relative to the lateral displacement of the sheet 14 of corrugated cardboard so that one obtains, at the outlet of the device 20 according to the present invention, a sheet of cardboard 14 coated with a perforated strip 16, the position of this strip 16 and the line of perforations 58 being substantially constant along the length of the sheet 14. Of this way, it is ensured that the position of the strip 16 and the line of perforations 58 will be identical on all the plates which will be later cut from the tablecloth 14.

If it is necessary to deposit several strips 16 along the tablecloth 14, it is planned to have several devices for laying and perforation 20 such as that described above, all of these devices 20 being placed along two guide rails 26, one being assigned to the sets of installation 22 and the other being assigned to the sets of perforation 24 as illustrated in FIG. 4. In this case, it is advantageously provided, that each of the devices 20 can carry out the installation, and possibly the perforation, of a strip 16 of nature or width different. In addition, it is expected that the transverse displacement of each of these devices 20 is independent of the position of the neighboring device 20.

In Figure 5 is shown a blank 120 ', this blank 120' being from of a plate cut from the sheet 14 and on which were made additional cutouts to separate the flaps 122a to 122d and 126a to 126d, and crease or discharge lines 148 separating therebetween the side walls 124a to 124d and each side wall 124a to 124d with one of the aforementioned flaps.

On this blank 120 ', there is the strip 16 covering the assembly side walls 124a to 124d and a fixing flap 124e, parallel to the X direction, i.e. perpendicular to the Y direction corresponding to the direction of the corrugated cardboard grooves (indicated by reference 150).

In this exemplary embodiment, the strip 16 is perforated in its middle at a line of perforations 58, this perforated strip 16 being intended to form a reinforcement and guide strip which will separate in two parts, along a dividing line comprising at least one first portion of the line of perforations 58, forming a line of pre-cuts in the box, in order to separate into two parts (120a and 120b) the box 80 produced by mounting the blank 120 '.

To do this, the blank 120 ′ is provided with gripping means 134, provided on the front side wall 124a of the body, and delimited by a line of precut openings 142 continuously passing through said side wall before 124a, or any other side wall, in a T-shape, the ends of the head of the T stopping at the edge of strip 16 while the line horizontal of the head of the T is parallel to the line of perforations 58, the leg of the T coming to cross at right angles to the line of perforations 58 in overlapping the entire strip 16. The complementary precut line 144 U-shaped, shown in Figure 5, extending in the lower part 120a of the packing box 120, the free ends of the branches of the U stopping at the level of the pre-cut line 58, this line 144 being intended to form a notch at the front face of the part low 120a of the body 120. This notch completes the line of perforation 58 to form the free edge of a display as can be see Figures 6, 9 and 10.

After mounting the blank 120 'to form the box 120 shown in FIG. 6, it suffices to press on the portion 142a of the line pre-cut opening 142 in order to bring out the means of grip 134, pull one of them more or less along the line of perforations 58 so as to separate the strip 16 into two parts, on the one hand and across the line of perforations 58. The upper part 136a of the strip is removed as well as the entire upper part 120b of the box, this portion 136 forming a portion for guiding the separation. The lower portion 138 of the strip 16 remains integral with the lower part 120a of the box intended to form a display, this portion 138 forming a reinforcement portion of the upper edge of the display 120a which prevents tearing of the last.

We understand, through the brief presentation of a application of the method of laying and perforating a flexible strip of reinforcement and / or guide according to the present invention, the importance of maintain a constant transverse position of the strip 16 and the line of perforations 58 in order to obtain a package 120 where the heights H1 (distance between strip 16 and bottom 122 of the packaging) and H2 (distance between the bottom 122 of the packaging and the line of perforations 58, constituting the line of separation between the lower part 120a intended to form a display and the upper part 120b) are constant in order to obtain a uniform result level of each 120 package and between all 120 packages.

The bottom 122 of the body is made up of flaps 122a to 122d, the upper wall 126 is composed of the flaps 126a to 126d, the walls lateral 124a to 124d being aligned longitudinally in the direction X in advance and cutting the cardboard which is preferably perpendicular to the corrugation of corrugated cardboard.

The side wall 124c or rear wall is adjacent to the wall lateral 124d and to a fixing flap 124e one of the surfaces of which will be fully attached to the side wall 124b so that the body 120 constitutes a rectangular parallelepiped.

In order to be able to fully assemble the box 120, it is provided a cut (or notch) is made on the adjacent line separating between them the flaps 126a to 126d and the flaps 122a to 122d. In order to fold the box, it is planned that the lines 148 separating the walls between them side 124a to 124d and each side wall 124a to 124d with one of the flaps 126a to 126d and 122a to 122d carry a groove or a crease 148 (dotted lines). The longitudinal direction X corresponds to the direction in advance of the cardboard plate in the machine for making corrugated cardboard. This direction X is parallel to the longitudinal direction of the plate intended to form the box 120 and the free edges of the flaps 122a to 122d and 126a to 126d. The direction of passage in processing equipment corresponds to the Y axis and the direction of the corrugated cardboard grooves is indicated by reference 50.

Referring to FIG. 6, a box 120 intended to receive products has a bottom 122, four side walls 124a to 124d and an upper wall 126 consisting of four flaps 126a to 126d. This case 120 serves as packaging for products that are stacked inside of box 120, which serves to protect and group these products during storage and / or transport of these products. This case can therefore have, on its outside surface, inscriptions or drawings directly printed on the original cardboard plate to locate the bottom of the top of the checkout and know all the useful information about the products contained in this case.

In addition to the packaging of the products contained in case 120, the box 120 is intended to serve as a product presentation device, directly on the store shelf. For this purpose, the box 120 is provided a separation device. This separation device consists of a longitudinal reinforcing and guiding element in the form of a strip 16, of a pre-cut line 58 corresponding to a section of the line of perforations and gripping means 134 making it possible to carry out the separation of the body 120 between a lower part 120a intended to serve as presentation device and an upper part 120b intended to be discarded after the separation.

The strip 16 is a self-adhesive plastic strip glued to inside the box 120, on the entire periphery thereof and at a constant height H1 of the bottom 122 of the body, which serves as an element longitudinal reinforcement and guide.

The pre-cut line 58 also follows the contour box 120 device at a constant height H2 from the bottom of the box 120. According to a characteristic of the present invention, the line of pre-cuts 58 is located at a level such that it divides the strip 16 in two portions 136 and 138. In FIG. 1, the line of pre-cuts 58 is located substantially in the middle of the width of the strip 16 but it is conceivable a different arrangement provided that the pre-cut line 58 remains between the two lateral edges of the strip 16.

According to another particular characteristic of the present invention, the pre-cut line 58 is composed of perforations 140 crossing both the strip 16 and the side walls 124a to 124d of the body 20. The pre-cut line 58 divides the strip 16 into a portion of guide 136 of the separation and in a reinforcement portion 138 whose role will be explained in more detail below.

The gripping means 134 consist of an area of the front side wall 124a limited by a precut opening line 142 continuously crossing said front side wall in a T-shape, the leg of the T 142a crossing at a right angle the line of pre-cuts 58 and the line 142b of the T constituting the upper part of this T being parallel to the line of pre-cuts 58 and located in the upper part 120b of the box 120.

The pre-cut line 58 materializes a first portion of the dividing line at which the lower and upper parts 120a and 120b of the box are separable. This line of pre-cuts 58 having a rectangular shape corresponding to the periphery of the box 120, we will get, according to this pre-cut line 58, a lower part 120a having an identical height H2 over its entire periphery. To better distinguish the front face of the future display device, the side wall before 124a is provided with a complementary pre-cut line 144 in U-shape, the base of the U being parallel to the pre-cut line 58 and located on the side of the lower part 20a of the body and the branches of the U being intersecting with this line of pre-cuts 58.

According to the example of embodiment of the box 120 of FIG. 6, H2 is 5 cm, the width of the strip 16 is 12 mm and the line of pre-cuts 58 consists of perforations 140 in the form of slots 2.5 mm long, the gap between two perforations being also 2.5 mm.

We can imagine quite other dimensions. Preferably, the strip 16 has a width greater than or equal to 10 mm, and the perforations 140 of the pre-cut line 58 have a length less than or equal to 5 mm.

We will now describe, in relation to FIGS. 7 to 10, achieving the separation between the lower and upper parts 120a, 120b from box 120.

When box 120 is closed and filled with products (FIG. 7), it is easy to locate the gripping means 134 making it possible to start opening the box 120 by viewing the line 42. To be able to enter zones 134, it suffices to exercise a light pressure on them so that they move away from the front side wall 124a of the box 120. It is of course possible to provide other systems of gripping as areas 134 for opening the crate, for example a hole in the wall of the body 120.

Then, as shown in Figure 8, it is to pull on the zones 134 to start opening the box and separating the lower parts and high 120a, 120b. Note that the leg of the T 142a extends substantially to the complementary pre-cut line 144 so that when entering the zones 134, the part of the front side wall 124a located between the pre-cut line 58 and the pre-cut line complementary 144 remains attached to zones 134 and detaches from the body 120.

By moving aside an area 134 of the front side wall 124a of the body, it is understood that the guide portion 36 of the strip 16, integral gripping means 134, also deviates from the body 120 on the one hand and across the pre-cut line 58 and the free edge of that portion of guide 136.

In fact, thanks to the line of pre-cuts 58 crossing both the side walls 124 of the body and the strip 16, we cut very clear the lower part 120a intended to constitute a useful part, in in this case a product presentation device.

During this opening operation, we understand that the portion reinforcement 138 which remains integral with the newly created free edge of the part low 120a protects this edge by strengthening it so as to avoid degradation of this edge by a phenomenon of tearing of the cardboard located between two perforations 140.

Thus, it is understood that the strip 16 allows, thanks to the portion of guide 136, to cut cleanly by shearing the edge of the part low 120a.

To finish detaching the lower part 120a from the body 120, it just keep shooting at least one of the two areas 134 following more or less the peripheral contour of the body 120 in order to detach and completely separate the lower and upper parts 120a, 120b of the body from the guide portion 136 of the strip 16 and its cardboard support.

The main advantage of the separation device used in the body according to the present invention is that the separation between the lower part 120a and the upper part 120b by obtaining a free edge 146 of the lower part 120a completely regular and clean over the entire section comprising the reinforcement portion 138.

Another particularly advantageous feature of the present invention is that one gets this result regardless of the way with which one pulls on the gripping means 134 integral with the guide portion 136. In fact, this separation can be carried out very fast by pulling on zones 134 in any direction by compared to the side walls 124 of the body 120 or very slowly in taking care to shoot at least one of the zones 134 in the direction from the pre-cut line 58.

When the guide portion 136 has been completely removed, it suffices then to release the upper part 120b (FIG. 9). We thus obtain a presentation device 120a supporting all the products contained initially in the box 120 (the outline of the products is represented in dashed lines in Figure 10) and can be placed directly on the shelf intended to receive the products. Thanks to the body separation device according to the present invention, a presentation device is obtained with a edge smooth, clean and regular, quickly obtained from the packaging initial.

From the foregoing description of the embodiment of a packing box, it is understood that the strip 16 constitutes an element longitudinal reinforcement and guide defining a first portion of the dividing line or dividing line, this strip 16 being continuous, placed on either side of this dividing line and having its surface facing the side walls 124 of the cardboard box 120, playing the role of support, substantially entirely connected to this support. We understand that the second portion of the dividing line or dividing line is formed by the part of the line of complementary precuts 144 placed in the lower part 120a.

If the strip 16 and the pre-cut line 58 can be respectively arranged and produced according to a line having a shape not straight, the complementary pre-cut line 144 is then absent and replaced by a section of the pre-cut line 58.

Instead of a cardboard box, we understand that the device separation can be included in other types of articles such as packaging, plate ... These items can be produced in a cardboard support (flat or corrugated) or any other material which can be sheared without deformation sensitive: plastic, synthetic, agglomerated, composite ...

The separation device is applied to a support produced in all types of cardboard: flat or corrugated, in particular double corrugated cardboard double-sided corrugated cardboard or double-sided corrugated cardboard being used preferentially.

The strip 16 constituting the longitudinal reinforcing element and guide can be replaced by other elements such as a cord, a coating or layer made of a material having a shear strength and tear strength greater than shear strength of the support. As part of the embodiment which has just been described, the strip 16 constitutes an element which is continuous and which closes on itself but we understand that this element may not be endless and can consist of an element with two free ends of so as to be able to physically separate the two adjoining parts one of the other without the article being completely cut and separated in two pieces that can be detached from each other.

The pre-cut line 58 is preferably substantially at the middle of the width of the longitudinal reinforcing and guiding element but this element may have a non-constant width, and even extend over the entire wall of the article which supports the separation device.

The perforations 140 of the pre-cut line 58 are shaped longitudinal slot parallel to the line of pre-cuts 58 but it is conceivable quite that these perforations 140 have other forms provided that they pass through both the longitudinal reinforcing and guiding element and the support.

It is understood that in the case of the box of Figures 7 to 10, the gripping means comprise, in addition to a section of the portion of guide 136 of the strip 16, at least one zone 134 of the wall of the article at less partially superimposed on at least part of said portion of guide 136 of the element, this area 134 being delimited by a section of the pre-cut line 58 and by a pre-cut opening line 142 crossing the wall of the article.

The zones 134 of the front side wall 124a constituting gripping means can be replaced by other types of means grip: at least one end section of the longitudinal element projecting from the wall comprising the separation device, a handle fixed to the guide portion 136 of the longitudinal element of reinforcement and guide, ...

Preferably, the longitudinal reinforcing element and guide is a strip 16, one of the surfaces of which is entirely fixed to the wall of the cardboard article and the strip 30 consists mainly of plastic or kraft paper.

The longitudinal guide and reinforcement element can also consist of a bead of glue.

We will now refer to Figures 11 to 16 which relate a box with hinge. This box 220 consists of a bottom 222, of four side walls 224a to 224d and an upper wall 226. A strip 230 extends, inside the box 220, on the four walls lateral 224a to 224d along a rectangular contour parallel to the bottom 222 and to the upper wall 226. This strip 230 can be continuous or else discontinuous and consisting of several pieces which completely cover the periphery of the box 220. This strip 230 and three of the four walls side have two pre-cut lines 232 and 233, preferably parallel to each other, delimiting between them the guide portion 236 and the gripping means. The two portions of the strip 230 located on either side of said guide portion 236, that is to say between one of the pre-cut lines 232 and 233 and one of the lateral edges of the strip 230, forming two reinforcing portions 238 from the edge of the two parts 220a and 220b of the wall of the box 220 which constitutes an article.

The two pre-cut lines 232 and 233 are interconnected by at least one opening line 242 in the form of a transverse slot and by two end of opening lines 243 in the form of a transverse slot situated at the ends of the pre-cut lines 232 and 233.

In the example illustrated in FIGS. 11 to 14, the lines of pre-cuts 232 and 233 extend over the entire width of the side walls 224a, 224b, 224d and over a small portion of the width of the side wall rear 224c, in the areas adjacent to the side walls 224b and 224d. The opening line 242 is placed in the middle of the section of the strip 230 extending over the front side wall 224a and the two end lines opening 243 connect the two ends of the lines pre-cuts 232 and 233 near the edges of the box 220 which connect the side wall 224c to the side walls 224c and 224d.

If we refer to figure 15, to open the box 220, we enter each section of the guide portion 236 adjacent to the opening line 242 by pulling on this section of the guide portion to one of the end of opening lines 243 so as to completely remove the guide portion 236 of the strip 230 located along the lines of pre-cuts 232 and 233 and between the two opening end lines 243. The box 220 is then separated into two parts 220a and 220b, thanks to the opening formed on the side walls 224a, 224b and 224d.

We get this way, as we can see on the Figure 16, a box 220 can be opened and closed, the section 230c of the strip 230 located on the rear side wall 224c constituting a hinge for the box thus formed. The free edge of the two parts 220a and 220b extending over the side walls 224a, 224b and 224d being reinforced by the reinforcement portions 238 which provided, during the separation, a cutting safe and easy by leaving a smooth and even edge 246 on the cover at the same time 220b and on the box body 220a.

Claims (16)

Device (20) for laying and perforating a flexible reinforcement and / or guide strip (16) having a face capable of adhering to an upper face of a sheet material (14) moving in a longitudinal direction (X), along a main chassis (12) provided with a drive mechanism (18) of said ply (14), comprising: a fitting assembly (22) for the strip (16), mounted on said chassis (12) and comprising: support means (36) of a coil (40) rotatably mounted and on which said strip (16) is wound, and positioning and fixing means (44, 46, 48, 50, 52) of the strip (16) making it possible to mount on the sheet (14) the strip (16) arriving parallel to the longitudinal direction (X); a perforation assembly (24), mounted on the main chassis (12) downstream and in longitudinal alignment with said installation assembly (22) and comprising a thumb wheel (54) rotatably mounted on a horizontal axis perpendicular to the longitudinal direction (X ), having a wafer provided with perforation teeth (56), and placed in a transverse position with respect to the main frame (12) such that the teeth (56) are close to, and possibly opposite, the strip (16) , said wheel (54) being able to be placed at a height such that the teeth (56) penetrate into the ply (14) to produce a line of perforations (58) passing through the ply (14), and possibly the strip (16 ); and cutting means (60, 62) of the strip (16). Device (20) according to claim 1, characterized in that said positioning and fixing means (44, 46, 48, 50, 52) comprise connecting means (52) capable of fixing the strip (16) on the upper face of said ply (14) and guide means (44, 46, 48, 50) of the strip (16) arranged downstream of the support means (36) of the coil (40) and upstream of said connecting means (52) in order to bring said strip (16) in the direction and direction of travel of the web (14) and placing said face of the strip (16) capable of adhering opposite the face upper side of the ply (14). Device (20) according to claim 2, characterized in that said strip (16) is self-adhesive, said face capable of adhering being covered of glue and in that said strip connection means (16) have a pressure roller (52) rotatably mounted on a horizontal axis perpendicular to the longitudinal direction (X), placed downstream of the guide means (44, 46, 48, 50), and movable between a high position and a low position in which said pressure roller (52) is supported on the upper face of the ply (14) by exerting sufficient pressure on the strip portion (16) lying between the ply (14) and the roller so that the strip (16) adheres to said upper face. Device (20) according to any one of the claims previous, characterized in that said cutting means (60, 62) comprise a movable blade device, disposed at the outlet of said coil (40) to cut the strip (16) not laid. Device (20) according to claim 4, characterized in that said cutting means (60, 62) further comprises a first system cutting (60) placed downstream and in longitudinal alignment with respect to said positioning and fixing means (44, 46, 48, 50, 52) in order to allow transverse sectioning of the strip (16) laid. Device (20) according to claim 4, characterized in that said cutting means (60, 62) further comprises a second cutting system (62) placed downstream and in longitudinal alignment by relative to said wheel (54) in order to allow cutting transversely said strip (16) laid, and possibly perforated. Device (20) according to any one of the claims previous, characterized in that said support means (36) are disposed above said positioning and fixing means (44, 46, 48, 50, 52) so that the axis of rotation of the spool (40) is horizontal and perpendicular to the longitudinal direction (X). Device (20) according to any one of the claims previous, characterized in that it further comprises first means displacement (26, 28, 29) allowing to shift at least transversely said installation assembly (22) relative to said frame (12) and second displacement means (26, 28, 29) making it possible to shift at least transversely said perforation assembly (24) relative to said chassis (12). Device (20) according to claim 8, characterized in that said first and second means of displacement means (26, 28, 29) each comprise: a guide rail (26) fixed above said chassis (12) in a transverse direction and on which said installation assembly (22) or said perforation assembly (24) is slidably mounted, motor means whose activation sets in motion an output shaft, and transmission means (28, 29) connected to said output shaft and to said installation assembly (22) or to said perforation assembly (24) to transform the movement of said shaft into a movement of rectilinear transverse translation of said installation assembly (22) or of said perforation assembly (24) relative to said associated guide rail (26). Device (20) according to claim 9, characterized in that it further comprises first means for detecting the position relative transverse between the ply (14) and the frame (12) and means for control capable of controlling said first and second means of displacement (26, 28, 29) in order to control the transverse position of said installation assembly (22) and said perforation assembly (24) to fluctuations in position of the ply (14) relative to said chassis (12). Device (20) according to claim 9, characterized in that it further comprises second means for detecting the position relative transverse between said positioning and fixing means (44, 46, 48, 50, 52) of the strip (16) and the ply (14) in order to control the transverse position of said perforation assembly (24) at the position transverse of the strip (16) relative to the ply (14), so as to check the position of the perforation line (58). Corrugating machine (10) comprising at least one device (20) according to any one of the preceding claims placed along the waving machine at a location corresponding to the end of the production of the ply (14), characterized in that the said ply (14) of material is made of double-sided corrugated cardboard, in that said mechanism drive (18) of the ply (14) and said main frame (12) belong to said corrugating machine (10) and in that said mechanism drive (18) has a variable drive speed. Method for laying and perforating a flexible reinforcement and / or guide strip (16) having a face capable of adhering to an upper face of a sheet material (14) moving in a longitudinal direction (X), along a main frame (12) provided with a drive mechanism (18) of said ply (14), comprising the following steps: a fitting assembly (22) of the strip (16) is provided, mounted on said chassis (12) and comprising: support means (36) of a coil (40) rotatably mounted and on which said strip (16) is wound, and positioning and fixing means (44, 46, 48, 50, 52) of the strip (16) making it possible to mount on the web (14) a section of strip (16) arriving parallel to the longitudinal direction (X); the strip (16) is inserted into the positioning and fixing means (44, 46, 48, 50, 52) of the strip (16); providing a perforation assembly (24) of the strip (16) mounted on the main chassis (12) downstream and in longitudinal alignment with said installation assembly (22) and comprising a wheel (54) rotatably mounted on a horizontal axis perpendicular to the longitudinal direction (X), having a wafer provided with perforation teeth (56) and placed in a transverse position relative to the main frame (12) such that the teeth (56) are close to, and possibly opposite, of the strip (16); cutting means (60, 62) are provided for the strip (16); it activates the drive mechanism to scroll the web (14); the thumbwheel (54) is positioned at a height such that the teeth (56) penetrate the sheet (14) to produce a line of perforations (58) passing through the sheet (14), and possibly the strip (16); and said cutting means (60, 62) are activated when a free end of the ply (14) arrives at said perforation assembly (24) or when the ply (14) is covered with a desired length of strip (16). Method according to claim 13, characterized in that it further comprises the following steps: first means of displacement means (26, 28, 29) are provided making it possible to offset at least transversely said laying assembly (22) of the strip (16) relative to said chassis (12) and second displacement means (26 , 28, 29) making it possible to offset at least transversely said perforation assembly (24) relative to said chassis (12); first means are provided for detecting the relative transverse position between the ply (14) and the chassis (12) and control means capable of controlling said first and said second displacement means (26, 28, 29); second means are provided for detecting the relative transverse position between said positioning and fixing means (44, 46, 48, 50, 52) of the strip (16) and the ply (14); the position of said laying assembly (22) and of said perforation assembly (24) is controlled by fluctuations in the transverse position of the ply (14) relative to said chassis (12) thanks to said first detection means; and, the transverse position of said perforation assembly (24) is controlled by the transverse position of the strip (16) relative to the ply (14) by means of said second detection means, so as to control the position of the perforation line (58 ). Corrugated cardboard packaging box (120, 220) made of first and second adjoining parts (120a, 120b, 220a, 220b) intended to be separated according to a dividing line, at least said first part constituting a useful part, said box comprising a bottom (122), a cover formed by flaps, four side walls and a reinforcement and / or guide strip (16; 230) arranged continuously on one faces of said side walls, said body comprising at least one line of perforations (58) rectilinear, at least partially superimposed on a first portion of said dividing line, parallel to said strip and passing through said strip and said side walls, characterized in that said body further comprises a line of pre-cuts (44) in the form of U at least partially superimposed on a second portion of said line partition, the base of the U being parallel to the perforation line (58), placed on said first part, and the branches of the U being intersecting with said line of perforations (58). Box according to claim 15, characterized in that said useful part (120a) comprises the bottom (122) of the body (120) so, that after the separation between said parts (120a, 120b), said useful part (120a) serves as a device for presenting the products contained in said checkout.

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