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EP2563702B1 - Unit for forming a layer of flat supports for a packaging production machine - Google Patents

Unit for forming a layer of flat supports for a packaging production machine Download PDF

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Publication number
EP2563702B1
EP2563702B1 EP11713684.6A EP11713684A EP2563702B1 EP 2563702 B1 EP2563702 B1 EP 2563702B1 EP 11713684 A EP11713684 A EP 11713684A EP 2563702 B1 EP2563702 B1 EP 2563702B1
Authority
EP
European Patent Office
Prior art keywords
conveyor device
unit
conveyor
conveyor belt
upstream
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.)
Not-in-force
Application number
EP11713684.6A
Other languages
German (de)
French (fr)
Other versions
EP2563702A1 (en
Inventor
Jean-Bernard Morisod
José-Manuel ROMERO
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.)
Bobst Mex SA
Original Assignee
Bobst Mex 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 Bobst Mex SA filed Critical Bobst Mex SA
Priority to EP11713684.6A priority Critical patent/EP2563702B1/en
Publication of EP2563702A1 publication Critical patent/EP2563702A1/en
Application granted granted Critical
Publication of EP2563702B1 publication Critical patent/EP2563702B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6609—Advancing articles in overlapping streams forming an overlapping stream
    • B65H29/6618—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66—Advancing articles in overlapping streams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/10—Selective handling processes
    • B65H2301/15—Selective handling processes of sheets in pile or in shingled formation
    • B65H2301/151—Selective shingled formation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/25—Driving or guiding arrangements
    • B65H2404/253—Relative position of driving and idler rollers
    • B65H2404/2532—Arrangement for selectively changing the relative position of the driving and idler rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard

Definitions

  • the present invention relates to a unit for forming one or more plies from individual flat supports.
  • the invention also relates to a packaging production machine comprising such a formation unit of this or these layers.
  • an initial plan printing medium such as a continuous strip of cardboard
  • a continuous strip of cardboard is successively unwound, printed and cut into a given shape.
  • Each of the cutouts or boxes obtained is intended to form a package once folded and glued.
  • the cuts often include flaps extending each of their sides and grooves facilitating the folding of the sides of the package.
  • the initial support is then conveyed through a separation unit, so as to position the different cuts along several parallel lines, adjacent.
  • the separation unit produces a slight deviation of the cuts with respect to the initial longitudinal direction. It is possible subsequently to realign each of the cuts in the same main direction by means of one or more alignment modules arranged downstream of the separator.
  • This alignment module is generally in the form of two conveyor belts facing one above the other. Each of the cuts is interposed and is moved at high speed between the two bands. The alignment modules, and thus the cuts, are distant from each other.
  • the next step is then to route each of these cuts to the stacking station.
  • stacking and packing of the blanks can only be done correctly if the blanks are moving slowly. It is necessary to reduce the speed of the cuts at the output of the alignment module. This slowing down is generally achieved by transferring the blanks to a conveyor device disposed downstream of the alignment module, the conveyor device moving at a reduced speed compared to that of the conveyor device formed by the alignment module.
  • the web is formed by a transfer and a speed differential between a first conveyor device, rapidly conveying the blanks, and a second conveyor device, advancing the web more slowly (see for example the documents US-3,942,786 and FR-2.784.085 ).
  • the first conveyor device is either the alignment module or ramps of the separation unit.
  • the second conveyor device is generally at a lower level than the output of the first conveyor device, ie the alignment module.
  • the cuts are released from this exit before reaching the slow conveyor device. During their descent, they are then subjected to the air flows generated by the devices carriers or by the cuts themselves. Their small thickness and their relative lightness lead them to oscillate around an ideal trajectory. It is therefore often difficult to control the trajectory followed by the cuts during their transfer at the time of their arrival in the tableting unit.
  • a first system for controlling the path of the cutouts is to interpose a plurality of baffles between the output of the first conveyor device and the inlet of the second conveyor device.
  • these deflectors substantially reduce the risk of jamming at relatively slow speeds, they are insufficient when the cuts move very quickly. In this case, the air flows generated within the machine disturb too much the trajectory of the cuts so that the baffles can truly give an ideal trajectory to the cuts.
  • it is often necessary to regularly and individually readjust each of the deflectors so as to ensure regularity in the flow of the blanks.
  • pressure rollers arranged transversely to the slow conveyor device so as to come strongly on the top of the cut sheet lines. These pressure rollers are generally positioned just after the baffles so as to press the cuts from the first conveyor device onto the mat being formed. These rollers therefore help to pass the cutouts from a fast speed to a slow speed. However, these rollers are unable to limit the risk of jamming cutouts into each other, especially at their respective flaps.
  • the second conveyor device is provided with a receiving area for the supports arriving from the first conveyor device, and having a convex curved portion.
  • a main object of the present invention is to develop a unit for forming one or more layers of individual planar supports.
  • a second The objective is to provide a tableting unit that effectively controls the trajectory of the blanks.
  • a third objective is to make accurate tableting by avoiding jamming cutouts into each other.
  • a fourth objective is to obtain a tableting unit to avoid the disadvantages of the state of the art.
  • Yet another object is to provide a packaging production machine with a separating unit and a tableting unit.
  • a unit for forming one or more individual plane support webs from at least one first conveyor device carrying the downstream upstream supports at a first speed is defined by claim 1.
  • the curved portion is used to bend an individual upstream planar support and to position it on a previous individual downstream planar support before the final tabling.
  • the unit is configured to curve the individual planar supports after having arrived one after the other as they pass over the curved portion and to deposit them on the supports already placed on the second conveyor device. It is only after this phase of curvature that the sheet is formed by the means for forming the sheet.
  • this curvature gives the support an arched shape which is better adapted to receive the following supports upstream from the first conveyor device, and which are deposited at high speed on the second conveyor device.
  • the deposited supports move on the curved surface of the curved portion directed upwards.
  • the supports that are deposited on the already deposited supports are transported and guided more efficiently than if they had been deposited on a flat surface.
  • the curved shape also prevents flaps, legs, edges, cut lines, embossings or any other modifications of the already deposited support do not hinder the deposition of the following supports.
  • flaps, lugs, flanges, cut-out lines, embossings or any other modifications must not interact with the flaps, tabs, flanges, cut-out lines, embossings or any other modifications of the following supports and vice versa.
  • the risk of a wedging of a support in one of these flaps tabs, flanges, cut lines, embossing or any other modifications has therefore become much lower, before tableting.
  • the curvature of the supports makes it possible, on the other hand, to facilitate the layering of the supports on the second conveyor device. Indeed, once the curved portion crossed, the arched support returns to the support that precedes the sheet that is formed. Its position relative to this previous support does not change until the stacking step.
  • a packaging production machine comprises the forming unit of one or more webs having one or more of the technical features described below and claimed, arranged downstream of a separation unit of flat supports.
  • the upstream and downstream directions are defined with reference to the direction of movement of the supports, along the longitudinal direction in the web-forming unit and in the overall package-producing machine.
  • the longitudinal direction is defined by referring to the direction of movement of the supports in the web formation unit and in the machine along its median longitudinal axis.
  • the transverse direction is defined as the direction perpendicular to the direction of movement of the supports.
  • a continuous web of cardboard is printed in a printing unit and then cut into a cutting unit. As is visible in Figure 1 this cutting is done for example in three ways or initial lines C of flat cardboard individual supports identical or cut 10 regularly distributed over its width.
  • a separation unit 1 is arranged at the outlet of the cutting unit (see Figures 1 and 2 ).
  • the separation unit 1 makes it possible to separate each of the blanks arriving along the three initial lines C into three distinctly separate and transversely separated tracks or lines A.
  • the separation unit 1 thus consists of three conveying separating ramps. 2a, 2b and 2c arranged in a fan. Two of the lateral conveying separating ramps 2a and 2c are disposed on either side of the central conveying separating ramp 2b.
  • the fan arrangement allows transverse spacing lines A cutouts 10 from each other.
  • Each of the conveying separating ramps 2a, 2b and 2c comprises a motor-driven endless lower belt 21 and an endless motor-driven upper belt 22.
  • the cuts 10 are held between the lower belt 21 and the upper belt 22 and driven by these two lower belts 21 and upper 22.
  • the cuts 10 positioned in adjacent lines C are separated, giving three continuous flows A of cuts 10.
  • the cuts 10 are also regularly spaced longitudinally from each other and move at high speed inside. of these flows.
  • the packaging production machine comprises an alignment module which constitutes a first carrier device 3 for the implementation of subsequent tablecloth.
  • the first conveyor device 3 is provided with an equivalent number of conveyor ramps, ie three conveyor ramps 3a, 3b and 3c.
  • the first conveyor device 3 is intended to receive each of the cuts 10 from the separating ramps and to make it undergo a displacement and / or pivoting, so as to orient and align in a single longitudinal direction.
  • Each of the conveyor ramps 3a, 3b and 3c is located in front of each of the conveying separating ramps 2a, 2b and 2c. In the case represented in Figures 1 and 2 this direction corresponds substantially to the direction of the central conveying ramp 2b.
  • the three conveyor ramps 3a, 3b and 3c are parallel to each other and to the longitudinal axis of the machine.
  • Each of the conveyor ramps 3a, 3b and 3c comprises an endless conveyor belt driven by motor 31 and an endless conveyor belt driven by motor 32 (see FIG. Figures 1 , 3 and 4 ).
  • the cutouts 10 are held between the lower belt 31 and the upper belt 32 and driven by these two lower belts 31 and upper 32.
  • Each of the conveyor ramps 3a, 3b and 3c moves the cuts 10 at a given first speed upstream. downstream (Arrow L in the Figures 1 to 4 ).
  • the blanks 10 exit the conveyor ramps 3a, 3b and 3c through a dispensing end 33.
  • the dispensing end 33 corresponds to the downstream limit of the nip zone between the lower conveyor belt 31 and the upper conveyor belt 32.
  • the machine comprises a unit for forming or forming one or more plies 6 with the blanks 10.
  • the tableting unit 6 is disposed downstream of the first conveyor device 3 and thus downstream of the unit. separation 1.
  • the tableting unit 6 and is supplied with cuts 10 by each of the conveyor ramps 3a, 3b and 3c of the first conveyor device 3, the latter being thus interposed between the separation unit 1 and the unit of separation. tablecloth 6.
  • the tableting unit 6 could also operate without the presence of a first conveyor device 3.
  • the conveying separating ramps 2a, 2b and 2c of the separating unit 1 can play the role of the first device carrier moving at the first given speed.
  • the tableting unit 6 comprises a second conveying device 6a carrying the cutouts 10 from upstream to downstream.
  • This second conveyor device 6a is in the form of an endless conveyor belt, whose upper surface carrying cutouts advances from upstream to downstream (Arrow S in the Figures 1 to 4 ).
  • the second conveyor device 6a is provided with a receiving zone 6b at the upper surface of the endless conveyor belt.
  • Each of the cutouts 10 comes to rest on the second carrier device 6a at the receiving zone 6b.
  • the reception zone 6b receives, for example, the front of the next cut on the middle of the preceding cut already laid.
  • This conveyor belt 6a moves at a second reduced speed with respect to the first speed of each of the conveyor ramps 3a, 3b and 3c of the first conveyor device 3.
  • Each of the distribution ends 33 of the conveyor ramps 3a, 3b and 3c is positioned in upstream and above the conveyor belt 6a.
  • a single deflector 7 is disposed between the conveyor ramps 3a, 3b and 3c and the conveyor belt 6a.
  • This deflector 7 is in the form of an elongate plate.
  • This plate 7 extends substantially over the entire width of the conveyor belt 6a.
  • This plate 7 is located above the conveyor belt 6a.
  • This plate 7 is oriented obliquely with respect to the plane formed by the conveyor belt 6a.
  • the upstream upper edge of the plate 7 is positioned near the distribution end 33 of each of the conveyor ramps 3a, 3b and 3c.
  • the lower downstream edge of the plate 7 is slightly raised relative to the second conveyor belt 6.
  • the deflector 7 is configured to direct the cutouts 10 of the first conveyor device 3 to the second conveyor device 6.
  • the deflector 7 makes it possible to print a substantially identical trajectory to the cutouts 10 coming out of the dispensing end 33.
  • a single deflector 7 for all the lines of the sheet avoids the problems of tedious and repeated adjustments to which the operators are subject.
  • this single deflector 7 may be replaced if necessary by several baffles evenly distributed over the entire width of the conveyor belt 6a and disposed at the outlet of each of the distribution ends 33 of the conveyor ramps 3a, 3b and 3c.
  • Three parallel plies 10a, 10b and 10c are formed on the conveyor belt 6a by the cutouts 10 emerging from the conveyor ramps 3a, 3b and 3c one after the other (see FIG. Figure 2 ), according to the three distinct ways or lines A.
  • the plies 10a, 10b and 10c are obtained by the difference in speed between the conveyor belt 6a slowly advancing the plies 10a, 10b and 10c and the transporting ramps 3a, 3b and 3c quickly sending the cuts 10.
  • the tableting unit 6 comprises a springboard roll 8 disposed under the conveyor belt 6a at its upper part.
  • the spring roll 8 rotates at a speed substantially equal to that of the conveyor belt 6a.
  • the tableting unit 6 comprises an upstream roll 6c returning to the end of the conveyor belt 6a.
  • the upstream roll 6c is suitable for mounting (arrows U in Figure 3 ) or go down (Arrow D in Figure 4 ), to move from a lowered position to a raised position and vice versa from a raised position to a lowered position.
  • the tableting unit 6 is in a first configuration according to the invention.
  • the tableting unit 6 is in a second configuration according to the invention.
  • the upper portion of the conveyor belt 6a passes from an upwardly inclined portion upstream to a downstream horizontal portion, due to the lowered position of the upstream roll 6c.
  • the roll 8 forms on the surface of the conveyor belt 6a a curved convex portion 8a similar to a hump or surface oriented and curved upwards.
  • This portion 8a forms an inflection.
  • This hump 8a extends transversely over the entire width of the conveyor belt 6a.
  • This hump 8a makes it possible to lift the blanks 10 as they circulate on the conveyor belt 6a and to curve a downstream cut and preparing it for the positioning of the upstream cutout which will follow.
  • the hump 8a is located downstream of the receiving zone 6b on the second conveyor device 6a. This position of the hump 8a separated from the receiving zone 6b allows to receive without hindrance a cutout 10 on a cut already laid and curved. This avoids that the cut that is received at the receiving zone 6b does not interfere with the changes, for example flaps, tabs, flanges, cut lines, embossing, the cut already laid.
  • transfer devices in the form of rollers 9a and 9b are advantageously arranged above the conveyor belt 6a and at a short distance therefrom. These transfer rollers 9a and 9b are rotated, their rotational speed being less than or substantially equal to the speed of movement of the first conveyor device 3 of the alignment module.
  • the first of these transfer devices is positioned between the deflector 7 and the springboard roll 8, ie between the boss 8a and the first conveyor device 3 and above the second conveyor device 6, so as to transfer to accompany the cuts 10 in their path, and to brake them.
  • the second of these transfer devices is positioned above the second conveyor device 6, substantially perpendicular to the boss 8a, ie of the springboard roll 8, so as to transfer, to accompany the blanks 10. in their path, and to curb them.
  • these transfer rollers 9a and 9b accompany and direct the blanks 10 by imposing a path before these cuts 10 are permanently deposited on the conveyor belt 6a. This makes it possible to avoid cuts 10 of significant torsional or stretching stresses and thus bends or offsets with respect to the principal direction defined by the ply 10a, 10b and 10c.
  • the transfer rollers 9a and 9b having a circumferential speed less than the advance speed of the blanks 10 produce a progressive braking of the blanks 10 just before the web 10a, 10b and 10c is formed.
  • This first configuration with a bump 8a and with two transfer rollers 9a and 9b is intended more specifically for the laying of blanks 10 type "long grain" or having an elongate shape and arranged in the longitudinal direction.
  • the longitudinal position of the upstream roller 9a is adjusted so that the distance between the dispensing end 33 and the point on the conveyor belt 6a vertically of the upstream roller 9a corresponds to the size of the cutout 10 taken in the longitudinal direction.
  • a rear area of the blank 10 is released by the dispensing end 33 only when a front area of the blank 10 contacts the upstream roll 9a and / or the conveyor belt 6a.
  • the trajectory of the cutout 10 thus remains constantly under control.
  • the upstream transfer roll 9a is positioned on the conveyor belt 6a and upstream of the spring roll 8. This upstream transfer roll 9a is positioned just after the deflector 7 so as to support on the cuts 10 freshly deposited on the conveyor belt 6a.
  • the rotational speed of the upstream transfer roller 9a is equal to the speed of movement of the conveyor belt 6a.
  • the downstream roll 9b is retracted upwards.
  • This second configuration without bump and with a single transfer roller 9a is intended more specifically for the tablecloth cutouts 10 type "short grain" or having an elongate shape and disposed perpendicularly to the longitudinal direction.
  • the position of the upstream roll 9a is moved upstream, the position of the conveyor belt 6a remaining fixed. This position makes it possible to reduce the distance between the distribution end 33 and the upstream transfer roller 9a, with respect to the distance provided in the first configuration.
  • the longitudinal position of the upstream roll 9a is adjusted so that the distance between the dispensing end 33 and the point on the conveyor belt 6a vertically of the upstream roll 9a corresponds to the size of the cut 10 taken in the longitudinal direction. With this adjustment, an upstream side area of the blank 10 is released by the dispensing end 33 only when a downstream side area contacts the upstream roll 9a and / or the conveyor belt 6a. The trajectory of the cutout 10 thus remains constantly under control.
  • the tableting unit 6 comprises means for forming the web or sheets 10a, 10b and 10c, in the form of a motorized introducer 12.
  • the motorized introducer 12 is placed in above the second carrier device 6a.
  • the motorized introducer 12 is placed downstream of the boss 8a, at the level of the horizontal portion located downstream of the conveyor belt 6a.
  • the motorized introducer 12 comprises an endless conveyor belt located above of the conveyor belt 6a.
  • the motorized introducer 12 is driven substantially at the same speed as that of the second carrier device 6a.
  • the motorized introducer 12 serves to form and then to stabilize the ply sheets 10a, 10b and 10c.
  • Each of the ply lines 10a, 10b and 10c is formed and compressed downstream of the bump 8a and the transfer roller or rollers 9a and / or 9b in a nip 11 between the conveyor belt 6a and the motorized introducer 12.
  • the receiving area 6b of the blanks 10 at the conveyor belt 6a, the bump 8a of the conveyor belt 6a and the motorized introducer 12 are separated. This separation of the functions, with the arrival and reception of the blanks 10, curvature of the blanks 10 and tableting of the blanks 10 optimizes the tableting.
  • the cuts 10 have a controlled trajectory and a stabilized speed, which avoids the risk of jams.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Description

La présente invention concerne une unité destinée à former une ou plusieurs nappes à partir de supports plans individuels. L'invention se rapporte également à une machine de production d'emballages comprenant une telle unité de formation de cette ou ces nappes.The present invention relates to a unit for forming one or more plies from individual flat supports. The invention also relates to a packaging production machine comprising such a formation unit of this or these layers.

Dans une machine de production d'emballages, un support d'impression plan initial, tel qu'une bande continue de carton, est successivement déroulé, imprimé et découpé selon une forme donnée. Chacune des découpes ou boîtes obtenues est destinée à former un emballage une fois repliée et collée. Pour faciliter l'assemblage des emballages, les découpes comportent souvent des rabats prolongeant chacun de leurs côtés et des rainurages facilitant le pliage des côtés de l'emballage.In a packaging production machine, an initial plan printing medium, such as a continuous strip of cardboard, is successively unwound, printed and cut into a given shape. Each of the cutouts or boxes obtained is intended to form a package once folded and glued. To facilitate the assembly of packages, the cuts often include flaps extending each of their sides and grooves facilitating the folding of the sides of the package.

Une fois ces découpes réalisées, le support initial est convoyé ensuite au travers d'une unité de séparation, de façon à positionner les différentes découpes selon plusieurs lignes parallèles, adjacentes. L'unité de séparation produit une légère déviation des découpes par rapport à la direction initiale longitudinale. Il est possible par la suite de réaligner chacune des découpes selon une même direction principale au moyen d'un ou plusieurs modules d'alignement disposés en aval du séparateur. Ce module d'alignement se présente généralement sous la forme de deux bandes transporteuses se faisant face l'une en-dessus de l'autre. Chacune des découpes est intercalée et est déplacée à grande vitesse entre les deux bandes. Les modules d'alignement, et ainsi les découpes, sont distants les uns des autres.Once these cuts are made, the initial support is then conveyed through a separation unit, so as to position the different cuts along several parallel lines, adjacent. The separation unit produces a slight deviation of the cuts with respect to the initial longitudinal direction. It is possible subsequently to realign each of the cuts in the same main direction by means of one or more alignment modules arranged downstream of the separator. This alignment module is generally in the form of two conveyor belts facing one above the other. Each of the cuts is interposed and is moved at high speed between the two bands. The alignment modules, and thus the cuts, are distant from each other.

L'étape suivante consiste ensuite à acheminer chacune de ces découpes au poste d'empilage. Toutefois, l'empilage et la mise en paquet des découpes ne peuvent se faire correctement que si les découpes se déplacent lentement. Il est nécessaire de réduire la vitesse des découpes à la sortie du module d'alignement. Ce ralentissement s'obtient généralement en transférant les découpes sur un dispositif transporteur disposée en aval du module d'alignement, le dispositif transporteur se déplaçant à une vitesse réduite comparativement à celle du dispositif transporteur formée par le module d'alignement.The next step is then to route each of these cuts to the stacking station. However, stacking and packing of the blanks can only be done correctly if the blanks are moving slowly. It is necessary to reduce the speed of the cuts at the output of the alignment module. This slowing down is generally achieved by transferring the blanks to a conveyor device disposed downstream of the alignment module, the conveyor device moving at a reduced speed compared to that of the conveyor device formed by the alignment module.

Pour réduire la longueur de l'unité d'empilage et de mise en paquet et ainsi de la machine, la réalisation d'une nappe de découpes s'avère nécessaire. Ainsi sont formées autant de lignes de nappes qu'il y a de découpes dans la largeur du support initial. Les découpes sont posées les unes sur les autres en se chevauchant au fur et à mesure de la progression du flux de découpes. Cette disposition et cette progression des découpes en nappe permettent également de garder une cadence de production constante.To reduce the length of the stacking unit and packaging and thus the machine, the realization of a sheet of cuts is necessary. Thus are formed as many rows of plies as there are cuts in the width of the initial support. The cuts are laid one on the other overlapping as the flow of cuts progresses. This arrangement and this progression of the sheet blanks also make it possible to keep a constant rate of production.

Etat de la techniqueState of the art

La nappe est formée grâce à un transfert et à un différentiel de vitesse entre un premier dispositif transporteur, transportant rapidement les découpes, et un deuxième dispositif transporteur, faisant avancer la nappe plus lentement (voir par exemple les documents US- 3.942.786 et FR- 2.784.085 ). Le premier dispositif transporteur est soit le module d'alignement soit des rampes de l'unité de séparation.The web is formed by a transfer and a speed differential between a first conveyor device, rapidly conveying the blanks, and a second conveyor device, advancing the web more slowly (see for example the documents US-3,942,786 and FR-2.784.085 ). The first conveyor device is either the alignment module or ramps of the separation unit.

Des problèmes de bourrage récurrents sont constatés au niveau de cette zone de transfert. Ces bourrages trouvent souvent leur origine dans la difficulté à déposer une découpe se déplaçant à grande vitesse et relativement librement sur une nappe de découpes déjà formée et se déplaçant plus lentement. Le différentiel de vitesse entre la découpe rapide et la nappe lente peut notamment aboutir à une mauvaise orientation de la découpe une fois celle-ci déposée sur la nappe. Si elle n'est pas détectée et corrigée à temps, cette mauvaise orientation peut alors gêner à son tour le dépôt des découpes suivantes.Recurring jamming problems are noted at this transfer area. These jams often have their origin in the difficulty of depositing a cut moving at high speed and relatively freely over a sheet of cuts already formed and moving more slowly. The speed differential between the fast cut and the slow ply may in particular lead to an incorrect orientation of the cut once it has been deposited on the ply. If it is not detected and corrected in time, this bad orientation can then hinder in turn the filing of the following cuts.

Dans beaucoup de cas, il se produit alors un accrochage ou même un coincement d'une découpe dans une autre, notamment au niveau de leurs rabats, pattes, rebords, découpes, gaufrages ou toutes autres modifications. Ce coincement génère donc des phénomènes de bourrage qui obligent l'opérateur à stopper régulièrement l'unité de façon à rétablir le flux normal des découpes.In many cases, there is then a hooking or even a wedging of a cutout in another, especially at their flaps, tabs, edges, cuts, embossings or any other modifications. This jamming therefore generates stuffing phenomena that force the operator to regularly stop the unit so as to restore the normal flow of the cuts.

Cette difficulté à positionner correctement les découpes sortant du premier dispositif transporteur est également accentuée par le comportement des découpes durant leur transfert jusqu'au deuxième dispositif transporteur lent. Le deuxième dispositif transporteur se trouve généralement à un niveau plus bas par rapport à la sortie du premier dispositif transporteur, i.e. le module d'alignement. Les découpes sont lâchées depuis cette sortie avant d'atteindre le dispositif transporteur lent. Durant leur descente, elles sont alors soumises aux flux d'air générés par les dispositifs transporteurs ou par les découpes elles-mêmes. Leur faible épaisseur et leur relative légèreté les amènent donc à osciller autour d'une trajectoire idéale. Il est donc souvent difficile de contrôler la trajectoire suivie par les découpes durant leur transfert au moment de leur arrivée dans l'unité de mise en nappe.This difficulty in properly positioning the cutouts exiting the first conveyor device is also accentuated by the behavior of the cuts during their transfer to the second slow conveyor device. The second conveyor device is generally at a lower level than the output of the first conveyor device, ie the alignment module. The cuts are released from this exit before reaching the slow conveyor device. During their descent, they are then subjected to the air flows generated by the devices carriers or by the cuts themselves. Their small thickness and their relative lightness lead them to oscillate around an ideal trajectory. It is therefore often difficult to control the trajectory followed by the cuts during their transfer at the time of their arrival in the tableting unit.

Un premier système pour contrôler la trajectoire des découpes consiste à interposer une pluralité de déflecteurs entre la sortie du premier dispositif transporteur et l'entrée du deuxième dispositif transporteur. Toutefois, même si ces déflecteurs diminuent sensiblement le risque de bourrage à des vitesses relativement lentes, ils s'avèrent insuffisants lorsque les découpes se déplacent très rapidement. Dans ce cas, les flux d'air générés au sein de la machine perturbent trop la trajectoire des découpes pour que les déflecteurs puissent véritablement conférer une trajectoire idéale aux découpes. Par ailleurs, même aux vitesses lentes, il est souvent nécessaire de réajuster régulièrement et individuellement chacun des déflecteurs de manière à garantir une régularité dans le flux des découpes.A first system for controlling the path of the cutouts is to interpose a plurality of baffles between the output of the first conveyor device and the inlet of the second conveyor device. However, even if these deflectors substantially reduce the risk of jamming at relatively slow speeds, they are insufficient when the cuts move very quickly. In this case, the air flows generated within the machine disturb too much the trajectory of the cuts so that the baffles can truly give an ideal trajectory to the cuts. Moreover, even at slow speeds, it is often necessary to regularly and individually readjust each of the deflectors so as to ensure regularity in the flow of the blanks.

En complément de ces déflecteurs, il est également fait usage de rouleaux de pression disposés transversalement au dispositif transporteur lent de manière à venir appuyer fortement sur le dessus des lignes de nappe de découpes. Ces rouleaux de pression sont généralement positionnés juste après les déflecteurs de manière à plaquer les découpes issues du premier dispositif transporteur sur la nappe en train de se former. Ces rouleaux contribuent donc à faire passer les découpes d'une vitesse rapide à une vitesse lente. Toutefois, ces rouleaux s'avèrent incapables de limiter le risque de coincement des découpes les unes dans les autres, notamment au niveau de leurs rabats respectifs.In addition to these deflectors, it is also used pressure rollers arranged transversely to the slow conveyor device so as to come strongly on the top of the cut sheet lines. These pressure rollers are generally positioned just after the baffles so as to press the cuts from the first conveyor device onto the mat being formed. These rollers therefore help to pass the cutouts from a fast speed to a slow speed. However, these rollers are unable to limit the risk of jamming cutouts into each other, especially at their respective flaps.

On connaît d'après les documents US-3.315.956 , DE-363.666 et US-2.526.726 des systèmes pour former une nappe avec des supports plans. Le deuxième dispositif transporteur est muni d'une zone de réception pour les supports arrivant du premier dispositif transporteur, et présentant une portion incurvée convexe.We know from the documents US 3315956 , DE-363666 and US 2526726 systems for forming a web with flat supports. The second conveyor device is provided with a receiving area for the supports arriving from the first conveyor device, and having a convex curved portion.

Dans les dispositifs de l'art antérieur, la position d'un support de la nappe fluctue encore dans les premiers instants qui suivent sa mise en nappe du fait que sa vitesse n'est pas encore stabilisée. Il a donc tendance à glisser sur le support qui la précède. Ce glissement augmente d'autant le risque d'un coincement mutuel de ces supports et, donc, d'un bourrage de l'unité.In the devices of the prior art, the position of a carrier of the web fluctuates further in the first moments after its tabling because its speed is not yet stabilized. It has a tendency to slide on the support that precedes it. This sliding increases all the risk of mutual jamming of these media and, therefore, a jamming of the unit.

Exposé de l'inventionPresentation of the invention

Un objectif principal de la présente invention consiste à mettre au point une unité de formation d'une ou plusieurs nappes de supports plans individuels. Un deuxième objectif est de réaliser une unité de mise en nappe permettant de contrôler efficacement la trajectoire des découpes. Un troisième objectif est de rendre précis la mise en nappe en évitant un coincement des découpes les unes dans les autres. Un quatrième objectif est celui d'obtenir une unité de mise en nappe permettant d'éviter les inconvénients de l'état de la technique. Un autre objectif encore est celui de prévoir une machine de production d'emballages avec une unité de séparation et une unité de mise en nappe.A main object of the present invention is to develop a unit for forming one or more layers of individual planar supports. A second The objective is to provide a tableting unit that effectively controls the trajectory of the blanks. A third objective is to make accurate tableting by avoiding jamming cutouts into each other. A fourth objective is to obtain a tableting unit to avoid the disadvantages of the state of the art. Yet another object is to provide a packaging production machine with a separating unit and a tableting unit.

Une unité de formation d'une ou plusieurs nappes de supports plans individuels, provenant d'au moins un premier dispositif transporteur, transportant les supports d'amont en aval à une première vitesse est définie par la revendication 1.A unit for forming one or more individual plane support webs from at least one first conveyor device carrying the downstream upstream supports at a first speed is defined by claim 1.

Autrement dit avec l'invention, la portion incurvée sert à courber un support plan individuel amont et à le positionner sur un support plan individuel aval précédent avant la mise en nappe définitive. L'unité est configurée pour courber les supports plans individuels après être arrivé les uns après les autres au moment où ils passent sur la portion incurvée et les déposer sur les supports déjà posés sur le deuxième dispositif transporteur. Ce n'est qu'après cette phase de courbure que la nappe est formée grâce aux moyens pour former la nappe.In other words with the invention, the curved portion is used to bend an individual upstream planar support and to position it on a previous individual downstream planar support before the final tabling. The unit is configured to curve the individual planar supports after having arrived one after the other as they pass over the curved portion and to deposit them on the supports already placed on the second conveyor device. It is only after this phase of curvature that the sheet is formed by the means for forming the sheet.

D'une part, cette courbure confère au support une forme arquée qui est mieux adaptée pour réceptionner les supports qui suivent en amont provenant du premier dispositif transporteur, et qui se déposent à grande vitesse sur le deuxième dispositif transporteur. Les supports déposés se déplacent sur la surface courbe de la portion incurvée dirigée vers le haut. Les supports qui se déposent sur les supports déjà déposés sont transportés et guidés plus efficacement que s'ils avaient été déposés sur une surface plane. Par ailleurs, la forme courbe évite également que des rabats, des pattes, des rebords, des lignes de découpes, des gaufrages ou toutes autres modifications du support déjà déposé ne viennent gêner le dépôt des supports suivants. Ces rabats, pattes, rebords, lignes de découpes, gaufrages ou toutes autres modifications ne doivent pas venir interagir avec les rabats, pattes, rebords, lignes de découpes, gaufrages ou toutes autres modifications des supports suivants et réciproquement. Avec l'invention, le risque d'un coincement d'un support dans un de ces rabats pattes, rebords, lignes de découpes, gaufrages ou toutes autres modifications est donc devenu beaucoup plus faible, avant la mise en nappe.On the one hand, this curvature gives the support an arched shape which is better adapted to receive the following supports upstream from the first conveyor device, and which are deposited at high speed on the second conveyor device. The deposited supports move on the curved surface of the curved portion directed upwards. The supports that are deposited on the already deposited supports are transported and guided more efficiently than if they had been deposited on a flat surface. In addition, the curved shape also prevents flaps, legs, edges, cut lines, embossings or any other modifications of the already deposited support do not hinder the deposition of the following supports. These flaps, lugs, flanges, cut-out lines, embossings or any other modifications must not interact with the flaps, tabs, flanges, cut-out lines, embossings or any other modifications of the following supports and vice versa. With the invention, the risk of a wedging of a support in one of these flaps tabs, flanges, cut lines, embossing or any other modifications has therefore become much lower, before tableting.

La courbure des supports permet, d'autre part, de faciliter la mise en nappe des supports sur le deuxième dispositif transporteur. En effet, une fois la portion incurvée franchie, le support arqué revient sur le support qui le précède dans la nappe qui se forme. Sa position par rapport à ce support précédent ne change pas jusqu'à l'étape d'empilage.The curvature of the supports makes it possible, on the other hand, to facilitate the layering of the supports on the second conveyor device. Indeed, once the curved portion crossed, the arched support returns to the support that precedes the sheet that is formed. Its position relative to this previous support does not change until the stacking step.

Dans un autre aspect de l'invention, une machine de production d'emballages est caractérisée en ce qu'elle comprend l'unité de formation d'une ou plusieurs nappes présentant une ou plusieurs des caractéristiques techniques décrites ci-dessous et revendiquées, disposée en aval d'une unité de séparation des supports plans.In another aspect of the invention, a packaging production machine is characterized in that it comprises the forming unit of one or more webs having one or more of the technical features described below and claimed, arranged downstream of a separation unit of flat supports.

Les sens amont et aval sont définis en faisant référence au sens de déplacement des supports, suivant la direction longitudinale dans l'unité de formation de nappe et dans l'ensemble de la machine de production d'emballages. La direction longitudinale est définie en faisant référence au sens de déplacement des supports dans l'unité de formation de nappe et dans la machine, selon son axe longitudinal médian. La direction transversale est définie comme étant la direction perpendiculaire à la direction de déplacement des supports.The upstream and downstream directions are defined with reference to the direction of movement of the supports, along the longitudinal direction in the web-forming unit and in the overall package-producing machine. The longitudinal direction is defined by referring to the direction of movement of the supports in the web formation unit and in the machine along its median longitudinal axis. The transverse direction is defined as the direction perpendicular to the direction of movement of the supports.

Brève description des dessinsBrief description of the drawings

D'autres avantages et caractéristiques de la présente invention seront mieux compris à la lecture des modes non limitatifs de réalisation de l'invention et en référence aux dessins dans lesquels:

  • la Figure 1 représente une vue en perspective d'une unité de séparation installée en amont d'une unité de mise en nappe conforme à l'invention ;
  • la Figure 2 représente une vue de dessus de l'unité de mise en nappe ;
  • la Figure 3 représente une vue latérale de l'unité de la Figure 2, dans une première configuration de l'invention ; et
  • la Figure 4 représente une vue latérale de l'unité de la Figure 2, dans une deuxième configuration de l'invention.
Other advantages and features of the present invention will be better understood on reading the nonlimiting embodiments of the invention and with reference to the drawings in which:
  • the Figure 1 is a perspective view of a separation unit installed upstream of a tableting unit according to the invention;
  • the Figure 2 represents a view from above of the tableting unit;
  • the Figure 3 represents a side view of the unit of the Figure 2 in a first configuration of the invention; and
  • the Figure 4 represents a side view of the unit of the Figure 2 in a second configuration of the invention.

Exposé détaillé de modes de réalisation préférésDetailed description of preferred embodiments

Dans une machine de production d'emballages (non représentée), une bande continue de carton est imprimée dans une unité d'impression, puis découpée dans une unité de découpe. Comme cela est visible en Figure 1, cette découpe se fait par exemple selon trois voies ou lignes initiales C de supports plans individuels en carton identiques ou découpes 10 réparties régulièrement sur sa largeur.In a packaging production machine (not shown), a continuous web of cardboard is printed in a printing unit and then cut into a cutting unit. As is visible in Figure 1 this cutting is done for example in three ways or initial lines C of flat cardboard individual supports identical or cut 10 regularly distributed over its width.

Une unité séparation 1 est agencée à la sortie de l'unité de découpe (voir Figures 1 et 2). L'unité séparation 1 permet de séparer chacune des découpes arrivant selon les trois lignes initiales C en trois voies ou lignes bien distinctes et séparées transversalement A. Dans ce cas précis, l'unité de séparation 1 est ainsi constituée par trois rampes séparatrices de convoyage 2a, 2b et 2c disposées en éventail. Deux des rampes séparatrices latérales de convoyage 2a et 2c sont disposées de part et d'autre de la rampe séparatrice centrale de convoyage 2b. La disposition en éventail permet d'écarter transversalement les lignes A de découpes 10 les unes des autres.A separation unit 1 is arranged at the outlet of the cutting unit (see Figures 1 and 2 ). The separation unit 1 makes it possible to separate each of the blanks arriving along the three initial lines C into three distinctly separate and transversely separated tracks or lines A. In this specific case, the separation unit 1 thus consists of three conveying separating ramps. 2a, 2b and 2c arranged in a fan. Two of the lateral conveying separating ramps 2a and 2c are disposed on either side of the central conveying separating ramp 2b. The fan arrangement allows transverse spacing lines A cutouts 10 from each other.

Chacune des rampes séparatrices de convoyage 2a, 2b et 2c comprend une courroie inférieure sans fin entrainée par moteur 21 et une courroie supérieure sans fin entrainée par moteur 22. Les découpes 10 sont maintenues entre la courroie inférieure 21 et la courroie supérieure 22 et entraînées par ces deux courroies inférieure 21 et supérieure 22.Each of the conveying separating ramps 2a, 2b and 2c comprises a motor-driven endless lower belt 21 and an endless motor-driven upper belt 22. The cuts 10 are held between the lower belt 21 and the upper belt 22 and driven by these two lower belts 21 and upper 22.

Durant cette phase de séparation, les découpes 10 positionnées dans des lignes adjacentes C sont séparées, ce qui donne trois flux continus A de découpes 10. Les découpes 10 sont également régulièrement espacées longitudinalement les unes des autres et circulent à grande vitesse à l'intérieur de ces flux.During this separation phase, the cuts 10 positioned in adjacent lines C are separated, giving three continuous flows A of cuts 10. The cuts 10 are also regularly spaced longitudinally from each other and move at high speed inside. of these flows.

À la sortie de l'unité de séparation 1, la trajectoire des découpes 10 ayant circulé sur les rampes séparatrices de convoyage latérales 2a et 2c positionnées en oblique par rapport à la rampe séparatrice centrale 2b est réalignée selon des axes longitudinaux. Pour réaliser cet alignement, la machine de production d'emballages comprend un module d'alignement qui constitue un premier dispositif transporteur 3 pour la mise en nappe ultérieure. Dans cet exemple avec trois rampes séparatrices de convoyage 2a, 2b et 2c pour l'unité de séparation 1, le premier dispositif transporteur 3 est muni d'un nombre équivalent de rampes transporteuses, i.e. trois rampes transporteuses 3a, 3b et 3c. Le premier dispositif transporteur 3 est destiné à réceptionner chacune des découpes 10 provenant des rampes séparatrices et à lui faire subir un déplacement et/ou un pivotement, de façon à l'orienter et à l'aligner selon une direction longitudinale unique. Chacune des rampes transporteuses 3a, 3b et 3c est située en face de chacune des rampes séparatrices de convoyage 2a, 2b et 2c. Dans le cas représenté dans les Figures 1 et 2, cette direction correspond sensiblement à la direction de la rampe de convoyage centrale 2b. Les trois rampes transporteuses 3a, 3b et 3c sont parallèles entre elles et à l'axe longitudinal de la machine.At the exit of the separation unit 1, the trajectory of the cutouts 10 having circulated on the lateral conveying separating ramps 2a and 2c positioned obliquely with respect to the central separating ramp 2b is realigned along longitudinal axes. To achieve this alignment, the packaging production machine comprises an alignment module which constitutes a first carrier device 3 for the implementation of subsequent tablecloth. In this example with three conveyor separation ramps 2a, 2b and 2c for the separation unit 1, the first conveyor device 3 is provided with an equivalent number of conveyor ramps, ie three conveyor ramps 3a, 3b and 3c. The first conveyor device 3 is intended to receive each of the cuts 10 from the separating ramps and to make it undergo a displacement and / or pivoting, so as to orient and align in a single longitudinal direction. Each of the conveyor ramps 3a, 3b and 3c is located in front of each of the conveying separating ramps 2a, 2b and 2c. In the case represented in Figures 1 and 2 this direction corresponds substantially to the direction of the central conveying ramp 2b. The three conveyor ramps 3a, 3b and 3c are parallel to each other and to the longitudinal axis of the machine.

Chacune des rampes transporteuses 3a, 3b et 3c comprend une courroie inférieure transporteuse sans fin entrainée par moteur 31 et une courroie supérieure transporteuse sans fin entrainée par moteur 32 (voir Figures 1, 3 et 4). Les découpes 10 sont maintenues entre la courroie inférieure 31 et la courroie supérieure 32 et entraînées par ces deux courroies inférieure 31 et supérieure 32. Chacune des rampes transporteuses 3a, 3b et 3c fait déplacer les découpes 10 à une première vitesse donnée de l'amont vers l'aval (Flèche L dans les Figures 1 à 4).Each of the conveyor ramps 3a, 3b and 3c comprises an endless conveyor belt driven by motor 31 and an endless conveyor belt driven by motor 32 (see FIG. Figures 1 , 3 and 4 ). The cutouts 10 are held between the lower belt 31 and the upper belt 32 and driven by these two lower belts 31 and upper 32. Each of the conveyor ramps 3a, 3b and 3c moves the cuts 10 at a given first speed upstream. downstream (Arrow L in the Figures 1 to 4 ).

Les découpes 10 sortent des rampes transporteuses 3a, 3b et 3c par une extrémité de distribution 33. L'extrémité de distribution 33 correspond à la limite aval de la zone de pincement entre la courroie inférieure transporteuse 31 et la courroie supérieure transporteuse 32.The blanks 10 exit the conveyor ramps 3a, 3b and 3c through a dispensing end 33. The dispensing end 33 corresponds to the downstream limit of the nip zone between the lower conveyor belt 31 and the upper conveyor belt 32.

La machine comprend une unité de mise en nappe ou de formation d'une ou plusieurs nappes 6 avec les découpes 10. L'unité de mise en nappe 6 est disposée en aval du premier dispositif transporteur 3 et ainsi en aval de l'unité de séparation 1. L'unité de mise en nappe 6 et est alimentée en découpes 10 par chacune des rampes transporteuses 3a, 3b et 3c du premier dispositif transporteur 3, ce dernier étant donc intercalé entre l'unité de séparation 1 et l'unité de mise en nappe 6.The machine comprises a unit for forming or forming one or more plies 6 with the blanks 10. The tableting unit 6 is disposed downstream of the first conveyor device 3 and thus downstream of the unit. separation 1. The tableting unit 6 and is supplied with cuts 10 by each of the conveyor ramps 3a, 3b and 3c of the first conveyor device 3, the latter being thus interposed between the separation unit 1 and the unit of separation. tablecloth 6.

L'unité de mise en nappe 6 pourrait également fonctionner sans la présence d'un premier dispositif transporteur 3. Dans ce cas, les rampes séparatrices de convoyage 2a, 2b et 2c de l'unité de séparation 1 peuvent jouer le rôle du premier dispositif transporteur se déplaçant à la première vitesse donnée.The tableting unit 6 could also operate without the presence of a first conveyor device 3. In this case, the conveying separating ramps 2a, 2b and 2c of the separating unit 1 can play the role of the first device carrier moving at the first given speed.

L'unité de mise en nappe 6 comprend un deuxième dispositif transporteur 6a, transportant les découpes 10 d'amont en aval. Ce deuxième dispositif transporteur 6a se présente sous la forme d'une bande transporteuse sans fin, dont la surface supérieure porteuse des découpes avance de l'amont vers l'aval (Flèche S dans les Figures 1 à 4).The tableting unit 6 comprises a second conveying device 6a carrying the cutouts 10 from upstream to downstream. This second conveyor device 6a is in the form of an endless conveyor belt, whose upper surface carrying cutouts advances from upstream to downstream (Arrow S in the Figures 1 to 4 ).

Le deuxième dispositif transporteur 6a est muni d'une zone de réception 6b au niveau de la surface supérieure de la bande transporteuse sans fin. Chacune des découpes 10 vient se poser sur le deuxième dispositif transporteur 6a au niveau de la zone de réception 6b. La zone de réception 6b reçoit par exemple l'avant de la découpe suivante sur le milieu de la découpe qui précède déjà posée.The second conveyor device 6a is provided with a receiving zone 6b at the upper surface of the endless conveyor belt. Each of the cutouts 10 comes to rest on the second carrier device 6a at the receiving zone 6b. The reception zone 6b receives, for example, the front of the next cut on the middle of the preceding cut already laid.

Cette bande transporteuse 6a se déplace à une deuxième vitesse réduite par rapport à la première vitesse de chacune des rampes transporteuses 3a, 3b et 3c du premier dispositif transporteur 3. Chacune des extrémités de distribution 33 des rampes transporteuses 3a, 3b et 3c est positionnée en amont et en-dessus de la bande transporteuse 6a.This conveyor belt 6a moves at a second reduced speed with respect to the first speed of each of the conveyor ramps 3a, 3b and 3c of the first conveyor device 3. Each of the distribution ends 33 of the conveyor ramps 3a, 3b and 3c is positioned in upstream and above the conveyor belt 6a.

De manière favorable, un déflecteur unique 7 est disposé entre les rampes transporteuses 3a, 3b et 3c et la bande transporteuse 6a. Ce déflecteur 7 se présente sous la forme d'une plaque allongée. Cette plaque 7 s'étend sensiblement sur toute la largeur de la bande transporteuse 6a. Cette plaque 7 est située en-dessus de la bande transporteuse 6a. Cette plaque 7 est orientée de manière oblique par rapport au plan formé par la bande transporteuse 6a. Le bord supérieur amont de la plaque 7 est positionné à proximité de l'extrémité de distribution 33 de chacune des rampes transporteuses 3a, 3b et 3c. Le bord inférieur aval de la plaque 7 est légèrement surélevé par rapport à la deuxième bande transporteuse 6.Favorably, a single deflector 7 is disposed between the conveyor ramps 3a, 3b and 3c and the conveyor belt 6a. This deflector 7 is in the form of an elongate plate. This plate 7 extends substantially over the entire width of the conveyor belt 6a. This plate 7 is located above the conveyor belt 6a. This plate 7 is oriented obliquely with respect to the plane formed by the conveyor belt 6a. The upstream upper edge of the plate 7 is positioned near the distribution end 33 of each of the conveyor ramps 3a, 3b and 3c. The lower downstream edge of the plate 7 is slightly raised relative to the second conveyor belt 6.

Le déflecteur 7 est configuré pour diriger les découpes 10 du premier dispositif transporteur 3 vers le deuxième dispositif transporteur 6. Le déflecteur 7 permet d'imprimer une trajectoire sensiblement identique aux découpes 10 sortant de l'extrémité de distribution 33.The deflector 7 is configured to direct the cutouts 10 of the first conveyor device 3 to the second conveyor device 6. The deflector 7 makes it possible to print a substantially identical trajectory to the cutouts 10 coming out of the dispensing end 33.

Un déflecteur unique 7 pour l'ensemble des lignes de nappe permet d'éviter les problèmes de réglages fastidieux et répétés auxquels sont soumis les opérateurs. Bien entendu, ce déflecteur unique 7 peut être remplacé au besoin par plusieurs déflecteurs répartis uniformément sur toute la largeur de la bande transporteuse 6a et disposés à la sortie de chacune des extrémités de distribution 33 des rampes transporteuses 3a, 3b et 3c.A single deflector 7 for all the lines of the sheet avoids the problems of tedious and repeated adjustments to which the operators are subject. Of course, this single deflector 7 may be replaced if necessary by several baffles evenly distributed over the entire width of the conveyor belt 6a and disposed at the outlet of each of the distribution ends 33 of the conveyor ramps 3a, 3b and 3c.

Trois nappes parallèles 10a, 10b et 10c sont formées sur la bande transporteuse 6a par les découpes 10 sortant des rampes transporteuses 3a, 3b et 3c les unes après les autres (voir Figure 2), selon les trois voies ou lignes bien distinctes A. Les nappes 10a, 10b et 10c sont obtenues par la différence de vitesse entre la bande transporteuse 6a faisant progresser lentement les nappes 10a, 10b et 10c et les rampes transporteuses 3 a, 3b et 3c envoyant rapidement les découpes 10.Three parallel plies 10a, 10b and 10c are formed on the conveyor belt 6a by the cutouts 10 emerging from the conveyor ramps 3a, 3b and 3c one after the other (see FIG. Figure 2 ), according to the three distinct ways or lines A. The plies 10a, 10b and 10c are obtained by the difference in speed between the conveyor belt 6a slowly advancing the plies 10a, 10b and 10c and the transporting ramps 3a, 3b and 3c quickly sending the cuts 10.

L'unité de mise en nappe 6 comprend un rouleau tremplin 8 disposé sous la bande transporteuse 6a au niveau de sa partie supérieure. Le rouleau tremplin 8 tourne à une vitesse sensiblement égale à celle de la bande transporteuse 6a.The tableting unit 6 comprises a springboard roll 8 disposed under the conveyor belt 6a at its upper part. The spring roll 8 rotates at a speed substantially equal to that of the conveyor belt 6a.

L'unité de mise en nappe 6 comprend un rouleau amont 6c faisant le renvoi à l'extrémité de la bande transporteuse 6a. Le rouleau amont 6c est apte à monter (Flèches U en Figure 3) ou à descendre (Flèche D en Figure 4), pour passer d'une position abaissée à une position relevée et inversement d'une position relevée à une position abaissée. Lorsque le rouleau amont 6c est en position abaissée (voir Figure 3), l'unité de mise en nappe 6 se trouve dans une première configuration selon l'invention. Lorsque le rouleau amont 6c est position relevée (voir Figure 4), l'unité de mise en nappe 6 se trouve dans une deuxième configuration selon l'invention.The tableting unit 6 comprises an upstream roll 6c returning to the end of the conveyor belt 6a. The upstream roll 6c is suitable for mounting (arrows U in Figure 3 ) or go down (Arrow D in Figure 4 ), to move from a lowered position to a raised position and vice versa from a raised position to a lowered position. When the upstream roll 6c is in the lowered position (see Figure 3 ), the tableting unit 6 is in a first configuration according to the invention. When the upstream roll 6c is in the up position (see Figure 4 ), the tableting unit 6 is in a second configuration according to the invention.

Dans la première configuration (Figure 3), la partie supérieure de la bande transporteuse 6a passe d'une partie inclinée vers le haut située en amont à une partie horizontale située en aval, en raison de la position abaissée du rouleau amont 6c. Dans cette position du rouleau amont 6c, le rouleau 8 forme à la surface de la bande transporteuse 6a une portion incurvée convexe 8a analogue à une bosse ou surface orientée et bombée vers le haut. Cette portion 8a forme une inflexion. Cette bosse 8a s'étend transversalement sur toute la largeur de la bande transporteuse 6a.In the first configuration ( Figure 3 ), the upper portion of the conveyor belt 6a passes from an upwardly inclined portion upstream to a downstream horizontal portion, due to the lowered position of the upstream roll 6c. In this position of the upstream roll 6c, the roll 8 forms on the surface of the conveyor belt 6a a curved convex portion 8a similar to a hump or surface oriented and curved upwards. This portion 8a forms an inflection. This hump 8a extends transversely over the entire width of the conveyor belt 6a.

Cette bosse 8a permet de soulever les découpes 10 lorsqu'elles circulent sur la bande transporteuse 6a et de courber une découpe aval et en la préparant pour le positionnement de la découpe amont qui va suivre. La bosse 8a est située en aval de la zone de réception 6b sur le deuxième dispositif transporteur 6a. Cette position de la bosse 8a séparée de la zone de réception 6b permet de réceptionner sans entrave une découpe 10 sur une découpe déjà posée et recourbée. Ceci permet d'éviter que la découpe qui est réceptionnée au niveau de la zone de réception 6b ne vienne interférer avec les modifications, par exemple rabats, pattes, rebords, lignes de découpes, gaufrages, de la découpe déjà posée.This hump 8a makes it possible to lift the blanks 10 as they circulate on the conveyor belt 6a and to curve a downstream cut and preparing it for the positioning of the upstream cutout which will follow. The hump 8a is located downstream of the receiving zone 6b on the second conveyor device 6a. This position of the hump 8a separated from the receiving zone 6b allows to receive without hindrance a cutout 10 on a cut already laid and curved. This avoids that the cut that is received at the receiving zone 6b does not interfere with the changes, for example flaps, tabs, flanges, cut lines, embossing, the cut already laid.

Pour faciliter le franchissement de la bosse 8a par les découpes 10, des dispositifs de transfert sous la forme de rouleaux 9a et 9b sont avantageusement disposés en-dessus de la bande transporteuse 6a et à faible distance de celle-ci. Ces rouleaux de transfert 9a et 9b sont entraînés en rotation, leur vitesse de rotation étant inférieure ou sensiblement égale à la vitesse de déplacement du premier dispositif transporteur 3 du module d'alignement.To facilitate the crossing of the bump 8a by the cuts 10, transfer devices in the form of rollers 9a and 9b are advantageously arranged above the conveyor belt 6a and at a short distance therefrom. These transfer rollers 9a and 9b are rotated, their rotational speed being less than or substantially equal to the speed of movement of the first conveyor device 3 of the alignment module.

Le premier de ces dispositifs de transfert, le rouleau amont 9a, est positionné entre le déflecteur 7 et le rouleau tremplin 8, i.e. entre la bosse 8a et le premier dispositif transporteur 3 et en-dessus du deuxième dispositif transporteur 6, de façon à transférer, à accompagner les découpes 10 dans leur trajectoire, et à les freiner.The first of these transfer devices, the upstream roll 9a, is positioned between the deflector 7 and the springboard roll 8, ie between the boss 8a and the first conveyor device 3 and above the second conveyor device 6, so as to transfer to accompany the cuts 10 in their path, and to brake them.

Le deuxième de ces dispositifs de transfert, le rouleau aval 9b, est positionné en-dessus du deuxième dispositif transporteur 6, sensiblement à l'aplomb de la bosse 8a, i.e. du rouleau tremplin 8, de façon à transférer, à accompagner les découpes 10 dans leur trajectoire, et à les freiner.The second of these transfer devices, the downstream roll 9b, is positioned above the second conveyor device 6, substantially perpendicular to the boss 8a, ie of the springboard roll 8, so as to transfer, to accompany the blanks 10. in their path, and to curb them.

Lors de la formation de la nappe 10a, 10b et 10c, ces rouleaux de transfert 9a et 9b accompagnent et dirigent les découpes 10 en leur imposant une trajectoire avant que ces découpes 10 ne soient définitivement déposées sur la bande transporteuse 6a. Ceci permet d'éviter aux découpes 10 des contraintes de torsion ou d'étirement importantes et ainsi des pliures ou des décalages par rapport à la direction principale définie par la nappe 10a, 10b et 10c. Les rouleaux de transferts 9a et 9b ayant une vitesse circonférentielle moins élevée que la vitesse d'avance des découpes 10 produisent un freinage progressif des découpes 10 juste avant que la nappe 10a, 10b et 10c ne soit formée.During the formation of the web 10a, 10b and 10c, these transfer rollers 9a and 9b accompany and direct the blanks 10 by imposing a path before these cuts 10 are permanently deposited on the conveyor belt 6a. This makes it possible to avoid cuts 10 of significant torsional or stretching stresses and thus bends or offsets with respect to the principal direction defined by the ply 10a, 10b and 10c. The transfer rollers 9a and 9b having a circumferential speed less than the advance speed of the blanks 10 produce a progressive braking of the blanks 10 just before the web 10a, 10b and 10c is formed.

Cette première configuration avec une bosse 8a et avec deux rouleaux de transfert 9a et 9b est destinée plus spécifiquement à la mise en nappe de découpes 10 de type « long grain » ou ayant une forme allongée et disposée dans le sens longitudinal.This first configuration with a bump 8a and with two transfer rollers 9a and 9b is intended more specifically for the laying of blanks 10 type "long grain" or having an elongate shape and arranged in the longitudinal direction.

Dans cette première configuration, la position longitudinale du rouleau amont 9a est réglée pour que la distance entre l'extrémité de distribution 33 et le point sur la bande transporteuse 6a à la verticale de ce rouleau amont 9a corresponde à la dimension de la découpe 10 prise dans le sens longitudinal. Grâce à ce réglage, une zone arrière de la découpe 10 est lâchée par l'extrémité de distribution 33 uniquement lorsqu'une zone avant de la découpe 10 entre en contact avec le rouleau amont 9a et/ou avec la bande transporteuse 6a. La trajectoire de la découpe 10 reste ainsi constamment sous contrôle.In this first configuration, the longitudinal position of the upstream roller 9a is adjusted so that the distance between the dispensing end 33 and the point on the conveyor belt 6a vertically of the upstream roller 9a corresponds to the size of the cutout 10 taken in the longitudinal direction. With this adjustment, a rear area of the blank 10 is released by the dispensing end 33 only when a front area of the blank 10 contacts the upstream roll 9a and / or the conveyor belt 6a. The trajectory of the cutout 10 thus remains constantly under control.

Dans la deuxième configuration (Figure 4), la partie supérieure de la bande transporteuse 6a reste à l'horizontale, en raison de la position relevée du rouleau amont 6c. Le rouleau tremplin 8 reste placé sous la surface de la bande transporteuse 6a. Dans cette position du rouleau amont 6c, la bande transporteuse 6a est sans portion incurvée convexe analogue à une bosse ou surface bombée vers le haut.In the second configuration ( Figure 4 ), the upper portion of the conveyor belt 6a remains horizontal, due to the raised position of the upstream roller 6c. The springboard roll 8 remains under the surface of the conveyor belt 6a. In this position of the upstream roll 6c, the conveyor belt 6a is without convex curved portion similar to a bump or convex surface upwards.

Pour améliorer la mise en nappe 10a, 10b et 10c, le rouleau de transfert amont 9a est positionné sur la bande transporteuse 6a et en amont du rouleau tremplin 8. Ce rouleau de transfert amont 9a est positionné juste après le déflecteur 7 de manière à appuyer sur les découpes 10 fraîchement déposées sur la bande transporteuse 6a. La vitesse de rotation du rouleau de transfert amont 9a est égale à la vitesse de déplacement de la bande transporteuse 6a. Le rouleau aval 9b est escamoté vers le haut.To improve the lay-up 10a, 10b and 10c, the upstream transfer roll 9a is positioned on the conveyor belt 6a and upstream of the spring roll 8. This upstream transfer roll 9a is positioned just after the deflector 7 so as to support on the cuts 10 freshly deposited on the conveyor belt 6a. The rotational speed of the upstream transfer roller 9a is equal to the speed of movement of the conveyor belt 6a. The downstream roll 9b is retracted upwards.

Cette deuxième configuration sans bosse et avec un seul rouleau de transfert 9a est destinée plus spécifiquement à la mise en nappe de découpes 10 de type « short grain » ou ayant une forme allongée et disposée perpendiculairement au sens longitudinal.This second configuration without bump and with a single transfer roller 9a is intended more specifically for the tablecloth cutouts 10 type "short grain" or having an elongate shape and disposed perpendicularly to the longitudinal direction.

Il est à noter que la position du rouleau amont 9a est déplacée vers l'amont, la position de la bande transporteuse 6a restant fixe. Cette position permet de réduire la distance entre l'extrémité de distribution 33 et le rouleau de transfert amont 9a, par rapport à la distance prévue dans la première configuration. Dans cette deuxième configuration, la position longitudinale du rouleau amont 9a est réglée pour que la distance entre l'extrémité de distribution 33 et le point sur la bande transporteuse 6a à la verticale de ce rouleau amont 9a corresponde à la dimension de la découpe 10 prise dans le sens longitudinal. Grâce à ce réglage, une zone latérale amont de la découpe 10 est lâchée par l'extrémité de distribution 33 uniquement lorsqu'une zone latérale aval entre en contact avec le rouleau amont 9a et/ou avec la bande transporteuse 6a. La trajectoire de la découpe 10 reste ainsi constamment sous contrôle.It should be noted that the position of the upstream roll 9a is moved upstream, the position of the conveyor belt 6a remaining fixed. This position makes it possible to reduce the distance between the distribution end 33 and the upstream transfer roller 9a, with respect to the distance provided in the first configuration. In this second configuration, the longitudinal position of the upstream roll 9a is adjusted so that the distance between the dispensing end 33 and the point on the conveyor belt 6a vertically of the upstream roll 9a corresponds to the size of the cut 10 taken in the longitudinal direction. With this adjustment, an upstream side area of the blank 10 is released by the dispensing end 33 only when a downstream side area contacts the upstream roll 9a and / or the conveyor belt 6a. The trajectory of the cutout 10 thus remains constantly under control.

Dans la première et la deuxième configuration, l'unité de mise en nappe 6 comprend des moyens pour former la ou les nappes 10a, 10b et 10c, sous la forme d'un introducteur motorisé 12. L'introducteur motorisé 12 est placés en-dessus du deuxième dispositif transporteur 6a. L'introducteur motorisé 12 est placé en aval de la bosse 8a, au niveau de partie horizontale située en aval de la bande transporteuse 6a. L'introducteur motorisé 12 comprend une bande transporteuse sans fin située en-dessus de la bande transporteuse 6a. L'introducteur motorisé 12 est entraîné sensiblement à la même vitesse que celle du deuxième dispositif transporteur 6a.In the first and second configuration, the tableting unit 6 comprises means for forming the web or sheets 10a, 10b and 10c, in the form of a motorized introducer 12. The motorized introducer 12 is placed in above the second carrier device 6a. The motorized introducer 12 is placed downstream of the boss 8a, at the level of the horizontal portion located downstream of the conveyor belt 6a. The motorized introducer 12 comprises an endless conveyor belt located above of the conveyor belt 6a. The motorized introducer 12 is driven substantially at the same speed as that of the second carrier device 6a.

L'introducteur motorisé 12 sert à former puis à stabiliser les nappes de découpes 10a, 10b et 10c. Chacune des lignes de nappes 10a, 10b et 10c est formée et comprimée en aval de la bosse 8a et du ou des rouleaux de transfert 9a et/ou 9b dans un intervalle de pincement 11 entre la bande transporteuse 6a et l'introducteur motorisé 12.The motorized introducer 12 serves to form and then to stabilize the ply sheets 10a, 10b and 10c. Each of the ply lines 10a, 10b and 10c is formed and compressed downstream of the bump 8a and the transfer roller or rollers 9a and / or 9b in a nip 11 between the conveyor belt 6a and the motorized introducer 12.

Dans l'unité de mise en nappe 6, la zone de réception 6b des découpes 10 au niveau de la bande transporteuse 6a, la bosse 8a de la bande transporteuse 6a et l'introducteur motorisé 12 sont séparés. Cette séparation des fonctions, avec arrivée et réception des découpes 10, courbure des découpes 10 et mise en nappe des découpes 10 permet d'optimiser la mise en nappe. Les découpes 10 ont une trajectoire contrôlée et une vitesse stabilisée, ce qui évite les risques de bourrages.In the tableting unit 6, the receiving area 6b of the blanks 10 at the conveyor belt 6a, the bump 8a of the conveyor belt 6a and the motorized introducer 12 are separated. This separation of the functions, with the arrival and reception of the blanks 10, curvature of the blanks 10 and tableting of the blanks 10 optimizes the tableting. The cuts 10 have a controlled trajectory and a stabilized speed, which avoids the risk of jams.

La présente invention n'est pas limitée aux modes de réalisation décrits et illustrés. De nombreuses modifications peuvent être réalisées, sans pour autant sortir du cadre défini par la portée du jeu de revendications.The present invention is not limited to the embodiments described and illustrated. Many modifications can be made, without departing from the scope defined by the scope of the set of claims.

Claims (9)

  1. Unit for forming one or more layers (10a 10b, 10c) of individual planar substrates (10), arriving from at least one first conveyor device (3) conveying (L) the substrates (10) from upstream to downstream at a first speed, comprising:
    - a second conveyor device (6) conveying (S) the substrates (10) from upstream to downstream at a second speed lower than the first speed, positioned downstream of the first conveyor device (3), equipped with a receiving zone (6b) for the substrates (10) arriving from the first conveyor device (3), being in the form of an endless conveyor belt (6a), having a convex curved portion (8a) formed by an intermediate roller (8) arranged under the endless conveyor belt (6a) and set into rotation, and extending over the entire width of the second conveyor device (6), and comprising an upstream roller (6c) producing the return to the end of the conveyor belt (6a), and
    - means for forming the layer (12), positioned above the second conveyor device (6a), driven at the second speed, and situated downstream of the convex curved portion (8a),
    characterised in that the upstream roller (6c) is capable of moving up (U) and down (D) so as to form the convex curved portion (8a) at the surface of the conveyor belt (6a).
  2. Unit according to claim 1, characterised in that the curved portion (8a) is situated downstream of the receiving zone (6b) on the second conveyor device (6a).
  3. Unit according to either claim 1 or claim 2, characterised in that it comprises a first transfer device (9a) positioned between the curved portion (8a) and the first conveyor device (3) and above the second conveyor device (6).
  4. Unit according to any of the preceding claims, characterised in that it comprises a second transfer device (9b) positioned substantially in line with the curved portion (8a) and above the second conveyor device (6).
  5. Unit according to either claim 3 or claim 4, characterised in that the first and second transfer devices (9a, 9b) are rollers which are set into rotation and rotate at a speed less than or substantially equal to that of the first conveyor device (3), so as to drive and to brake the substrates (10).
  6. Unit according to any of the preceding claims, characterised in that the first conveyor device (3) comprises at least one ramp having an endless conveyor belt, and in that the intermediate roller (8) is positioned under the conveyor belt (6a) and rotates at a speed substantially equal to that of said conveyor belt (6a).
  7. Unit according to any of the preceding claims, characterised in that it comprises a deflector (7) configured to direct the substrates (10) from the first conveyor device (3) toward the second conveyor device (6).
  8. Machine for producing packaging, characterised in that it comprises a unit (6) for forming one or more layers (10a 10b, 10c) according to any of the preceding claims, located downstream of a unit (1) for separating the planar substrates (10).
  9. Machine according to claim 8, characterised in that it comprises an alignment module (3) inserted between the unit (1) for separating the planar substrates (10) and the unit (6) for forming one or more layers (10a, 10b, 10c).
EP11713684.6A 2010-04-30 2011-04-01 Unit for forming a layer of flat supports for a packaging production machine Not-in-force EP2563702B1 (en)

Priority Applications (1)

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EP11713684.6A EP2563702B1 (en) 2010-04-30 2011-04-01 Unit for forming a layer of flat supports for a packaging production machine

Applications Claiming Priority (3)

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EP10004579 2010-04-30
PCT/EP2011/001653 WO2011134583A1 (en) 2010-04-30 2011-04-01 Unit for forming a layer of flat supports for a machine that produces packaging
EP11713684.6A EP2563702B1 (en) 2010-04-30 2011-04-01 Unit for forming a layer of flat supports for a packaging production machine

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EP2563702A1 EP2563702A1 (en) 2013-03-06
EP2563702B1 true EP2563702B1 (en) 2015-09-23

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EP (1) EP2563702B1 (en)
JP (1) JP5607238B2 (en)
KR (1) KR101420039B1 (en)
CN (1) CN102858667B (en)
ES (1) ES2550648T3 (en)
WO (1) WO2011134583A1 (en)

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TWI636944B (en) * 2017-09-14 2018-10-01 全利機械股份有限公司 Delivery system and layered stacking device for paper packages

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KR101420039B1 (en) 2014-07-15
CN102858667B (en) 2016-06-01
KR20130025912A (en) 2013-03-12
WO2011134583A1 (en) 2011-11-03
JP5607238B2 (en) 2014-10-15
CN102858667A (en) 2013-01-02
EP2563702A1 (en) 2013-03-06
US20130043105A1 (en) 2013-02-21
JP2013527099A (en) 2013-06-27
US8893876B2 (en) 2014-11-25
ES2550648T3 (en) 2015-11-11

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