EP0244308B1 - Machine for receiving and piling cut sheets - Google Patents

Machine for receiving and piling cut sheets Download PDF

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Publication number
EP0244308B1
EP0244308B1 EP87400941A EP87400941A EP0244308B1 EP 0244308 B1 EP0244308 B1 EP 0244308B1 EP 87400941 A EP87400941 A EP 87400941A EP 87400941 A EP87400941 A EP 87400941A EP 0244308 B1 EP0244308 B1 EP 0244308B1
Authority
EP
European Patent Office
Prior art keywords
blanks
stop
conveyor belt
machine
stack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87400941A
Other languages
German (de)
French (fr)
Other versions
EP0244308A1 (en
Inventor
Michael Armelin
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.)
Machines Chambon SA
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Machines Chambon 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 Machines Chambon SA filed Critical Machines Chambon SA
Priority to AT87400941T priority Critical patent/ATE54289T1/en
Publication of EP0244308A1 publication Critical patent/EP0244308A1/en
Application granted granted Critical
Publication of EP0244308B1 publication Critical patent/EP0244308B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/58—Article switches or diverters
    • 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
    • B65H29/6654—Advancing articles in overlapping streams changing the overlapping figure
    • B65H29/6663—Advancing articles in overlapping streams changing the overlapping figure reversing the overlapping figure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/30—Arrangements for removing completed piles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H33/00—Forming counted batches in delivery pile or stream of articles
    • B65H33/12—Forming counted batches in delivery pile or stream of articles by creating gaps in the stream
    • 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 machine for receiving and stacking blanks of cardboard or similar material, of variable shape and format, cut one after the other, in a continuous web, by a cutting device located upstream of the machine, fed in "scales" on a conveyor, overlapping each other.
  • the present invention aims to adapt this stacking process in a machine allowing, depending on the number of blanks of a particular print, that is to say depending on whether it is to receive successive blanks forming part of a series of a large number or a small number of blanks either to form and automatically evacuate stacks of a predetermined number of blanks, to facilitate the subsequent recovery of the stacks of blanks, according to their use downstream , or to let the blanks come out continuously, one after the other, to allow easy manual recovery of the blanks.
  • this machine for receiving and stacking blanks of cardboard or similar material, of variable shape and format, cut one after the other, in a continuous sheet, by a cutting device located upstream of the machine, fed in "scales" on an endless conveyor belt, overlapping each other in such a way that the front edge of any blank is placed above a previous blank while its rear edge is in contact with the conveyor belt, said machine comprising a device for deflecting the blanks by at least 90 °, endless parallel movable belts extending between the outlet of the device for deflecting the blanks and a transverse stacking stop which stops the blanks successive which engage one after the other under the stack of blanks already formed, the blank deflection device comprising a drum of horizontal and transverse axis around which pass the co movable endless tracks extending up to the stacking stop, the conveyor belt being tangent to the drum, under the latter, and passing around a motorized drive roller and return rollers of horizontal axes and transverse, is characterized in that at least one of the def
  • the machine according to the invention is provided with a central control device which synchronizes the operation of the various actuating members, such as jacks, and which makes it possible to automatically initiate the release and lateral discharge cycle of a battery. when this stack has reached the desired number of blanks. Because the blanks constituting each stack arrive successively from below this stack, the height of the stacks is not limited.
  • the machine according to the invention thus offers the advantage that it can be used very conveniently in two different ways, namely by providing, at its outlet, a continuous line of blanks in "scales", in the horizontal and longitudinal direction, or by supplying, after deflection of the blanks, stacks of blanks of variable height, these stacks being removed laterally, which facilitates their subsequent use on packaging machines.
  • the first case that is to say with a horizontal outlet in the axis of the machine, is particularly interesting when it comes to short series of blanks; indeed, this avoids having to modify the machine settings.
  • the machine according to the invention lends itself equally ment well to the formation of stacks of blanks increasing in the horizontal direction (with deviation of the blank line by 90 °) or in an inclined direction of any angle greater than 90 ° relative to the horizontal direction of feeding blanks.
  • the machine according to the invention which is represented in FIGS. 1A and 1B, comprises an upstream conveyor belt 1, of the endless type, on the upper strand of which lans 2 overlapping one move from right to left. others.
  • These blanks 2 which can be, for example, blanks of cardboard precut to later form packaging and printed on their upper faces, form "scales" on the upper strand of the conveyor 1, in other words the front edge 2a of any blank 2 is placed above a previous blank 2 while its rear edge 2b, which is in contact with the conveyor belt, is located under the next blank 2.
  • These blanks 2 are obtained by cutting, upstream, a continuous sheet, by means of a cutting device of any known type. They constitute, on the upstream conveyor, a single longitudinal row or several parallel rows distant from each other.
  • the blanks 2 in "scales" are brought to a horizontal endless conveyor belt 3.
  • the upstream conveyor belt 1 and the intermediate conveyor belt 3 are both driven, at the same linear speed V, by a motor 4 coupled, by via a transmission mechanism 5, to rollers 6 and 7 respectively driving the upstream conveyor belt 1 and the intermediate conveyor belt 3.
  • transverse jogging device 8 of any known type, which comprises, by row of blanks 2, a pair of vertical and longitudinal plates 9, aminated with 'an alternating transverse movement and coming into contact with the longitudinal edges of the flanks 2, to align each row of flaps 2.
  • This device 11 is placed at the junction of the intermediate conveyor belt 3 and a downstream reversing conveyor 12 which comprises an endless conveyor belt 13 passing over an upstream deflection roller 14 of horizontal and transverse axis, which extends in manhole and at the same level as another downstream deflection roller 15, of horizontal and transverse axis, provided for the intermediate conveyor belt 3.
  • the device 11 which is provided for the separation of thin articles such as cardboard blanks, comprises a lower cleat 16, normally located, between the two rollers 14, 15, flush with the upper strands of the two conveyor belts 3 and 13 or under these strands and which can be lifted by a jack 17. Above the deflection rollers 14 and 15 is articulated, around a horizontal and transverse axis 18, a first pivoting lever 19 which carries, at its lower part, a horizontal plate 19a and which is urged clockwise, that is to say downwards, by a spring 22.
  • the device 11 also includes a second lever 20 which is also articulated around the axis 18, which carries at least one pressure roller or cylinder 23, disposed above the conveyor belt 13, and a stop 21 adjustable in height relative to the cylinder 23, and which can be lowered under the control of a jack 24
  • the first lever 19 is stopped, in s it is moved downwards, by an appropriate stop provided on the second lever 20.
  • a central control device causes the lowering, consequently of the supply to the jack 24, of the two levers 19 and 20 and consequently of the stop 21 and of the pressure roller or cylinder 23. Simultaneously the lower cleat 16 is lifted by the jack 17, this cleat in turn raising the blanks 2 by causing them to stop against the lowered stop 21 and letting the other blanks located forward move away.
  • the stop 21 thus stops the first blank of the following group of blanks, intended to constitute the next stack, thus forming an empty space or "hole" a in the row of blanks.
  • the jack 24 has lowered the pressure roller (s) 23 in contact with the last blanks 2 of the previous group to promote the drive of these last blanks of the previous group by the conveyor belt 13.
  • This conveyor belt 13 is then moved, after an adjustable time, at a speed V1 greater than the speed V of the intermediate conveyor belt 3, in order to avoid excessive accumulation of blanks against the stop 21, during the formation of the hole.
  • the stop of the line of blanks by the stop 21 is thus effected by "shearing” or breaking of the continuity in the vertical direction, and not by pinching this line of blanks.
  • the central control device causes the cleat 16 to be lowered and the stop 21 as well as the pressure roller 23 to be raised, which has the effect of releasing the first blanks from the following group which have been retained upstream of the stop 21, gradually stacking. These first blanks are held down by the plate 19a at the start of the ascent of the stop 21.
  • the next group of blanks 2 then continues its movement to the left, passing from the intermediate conveyor belt 3 to the downstream conveyor belt for deflecting the blanks 13 (180 ° reversal in this particular embodiment), this group then being separated from the previous group by an empty space or "hole" a.
  • the drive of the endless conveyor belt 13 is carried out by means of a motor 25 which is coupled to a drive roller 26 of the conveyor belt 13, by means of a transmission mechanism 25a.
  • the upper horizontal strand of the downstream conveyor belt 13 passes around the left half of the periphery of a turn drum 36, of horizontal and transverse axis, located above the conveyor belt 13 and rotated by the motor. 25, via an appropriate linkage mechanism not shown. It then passes over a first upper deflection roller 27 tangent to the upper part of the drum 36, then successively over a second upper deflection roller 28, located at the same level as the previous one but shifted to the left, a third deflection roller 29 lower, located under the horizontal strand of the belt 13, then on the drive roller 26 and on a lower tension return roller 31, with an adjustable position to adjust the tension of the conveyor belt 13, to return to the upstream return roller 14
  • the lower tension return roller 31 is carried by a pair of parallel arms 32 articulated around a horizontal and transverse axis, at their upper part, and which are actuated by a horizontal and longitudinal tension cylinder 33 mounted to the part bottom of the machine frame.
  • the first and second upper deflection rollers 27 and 28 for the conveyor belt 13 are rotatably mounted on a frame 34 which is pivotally mounted on the machine frame, around a horizontal and transverse axis coincident with that of the deflection roller lower 29.
  • the pivoting movement of the chassis 34 is controlled by a mechanism 30, provided on one side of the machine and which can be actuated manually or by a motor.
  • the frame 34 can be brought into a horizontal position, as indicated in the left part of FIG. 1A, and in this case the groups of blanks 2 come out horizontally, at the left or downstream end of the machine, being separated or not from each other by holes previously formed by the separation device 11 and without being turned over, in other words with the printed faces of the blanks facing upwards.
  • This horizontal position of the frame 34 is suitable in the case of short series of blanks or blanks having an irregular shape which do not lend themselves to automatic stacking.
  • the frame 34 can also be brought into a vertical position, as it is also shown in FIG. 1A. In this vertical position, the downstream part of the upper strand of the conveyor belt 13 is pressed against a set of parallel endless belts 35, passing around the left half of the turning drum 36.
  • the belts 35 can be constituted by cylindrical belts s 'engaging in grooves, in semi-circular cross section, of the drum 36.
  • the upper strand of the conveyor belt thus applies to half of the peripheral surface of the drum 36 located to the left of the vertical diametral plane and on which are wound the endless belts 35.
  • the cylinder 33 for adjusting the tension of the conveyor belt 13 is provided to take account of the variation in the length of the part of the conveyor belt 13 extending between the lower generator of the drum 36 and the first upper deflection roller 27, respectively in the two horizontal and vertical positions of the pivoting frame 34.
  • the jack 33 adjusts the position of the movable deflection roller 31 so that the conveyor belt 13 always has the correct tension, whatever the position of the pivoting frame 34.
  • the blanks 2 After their 180 ° reversal the blanks 2 are released at the upper part of the drum 36, at the place where it is tangent to the first upper deflection roller 27 of the conveyor belt 13. From this moment the blanks 2 which have thus been turned 180 °, are moved from left to right by the belts 35, in the direction of a stacking device 37 provided at the top of the machine. These blanks 2 are then presented with an arrangement in "scales" opposite to their arrangement at the lower part of the machine, that is to say that the front edge 2a of a blank 2 is placed under a previous blank and the rear edge 2b of the same blank 2 is placed above the next blank 2, as it appears in the drawing.
  • the blanks 2, thus turned 180 °, are moved by the upper strands of the belts 35 to a transverse stacking stop 38 forming part of the stacking device 37 and which can be retracted vertically under the belts 35, under the action of a mechanism controlled by a jack 39.
  • the machine may comprise, upstream of the stacking stop 38, at least one pressing roller (or plate) 49 mounted on a support 51 adjustable longitudinally, this roller being able to be pressed downwards by a cylinder or spring 52.
  • This roller 49 is intended to exert pressure on the blanks 2 located on the upper strand of the belts 35, in an appropriate position varying longitudinally as a function of the format of the blanks 2, to facilitate their introduction to the base of the battery.
  • the support 51 is also arranged to constitute a guide on the upstream side of the stack during its formation.
  • the central control device causes the supply of the jack 39, to lower the retractable stacking stop 38.
  • This stop 38 then releases the stack blanks formed against it, this stack being driven, by the belts 35, to the right in FIG. 1B, until it comes to meet a stop 42 for stopping the stacks.
  • the speed of the belts 35 has been reduced to the value V of the conveyor 3, so as not to transport the batteries at too high a speed, risking their deformation.
  • This stop 42 is located just after a lateral discharge device 43 comprising a set of rollers 44 extending longitudinally and which are carried by a support 45 movable vertically under the control of a jack 46.
  • These rollers 44 of the device lateral discharge 43 can be rotated on themselves by means of endless drive belts 47 which are in contact with the lower parts of the rollers 44 and which are driven by a motor 48 by means of a mechanism appropriate transmission.
  • the central control device causes the support 45 and the assembly of discharge rollers 44 to be raised, then the spacing of the evacuation stop 42 by means of a jack 42a, then the electrical supply of the motor 48 to rotate these rollers 44.
  • rollers 44 are lifted above the belts 35, they come into contact with the face bottom of the last blank of the stack formed, they lift this stack somewhat and by their rotation they cause the evacuation of the stack in the transverse direction on one side or the other of the machine. The stack of blanks can then be taken up by any handling chain.
  • the machine no longer includes the device 11 intended to form "holes" of separation between the groups of successive blanks subsequently forming individual stacks.
  • the blanks 2 arrive on the upper strands of the belts 35 by forming a continuous stream, the belt 13 then always moving at the same speed.
  • these blanks form, in contact with the stacking stop 38, a continuously increasing stack.
  • At least one horizontal blade 53 which can be moved horizontally and longitudinally, at above the stop 38, by a longitudinal cylinder 54.
  • This blade 53 with rounded tip, is intended to be introduced horizontally and longitudinally into the stack being formed, to separate it into two parts, namely a lower part P1 and an upper part P2.
  • a pusher 55 actuated by a jack 56 or any other suitable control device, and which is arranged, behind the stop 38, so as to raise the upper part P2 of the pile being formed, by its rear or right side which is opposite the end of the blade 53.
  • the spreader pusher 55 For the spreader pusher 55 to function properly, its inclination relative to the vertical must be between 15 and 30 °. Therefore, when feeding the jack 56, the spreader pusher 55 is moved up and to the left, it comes into contact with the right side of a blank of the stack being formed, and it lifts slightly this blank, as well as the upper part P2 of the stack. At this moment the jack 54 moves the blade 53 to the left so that this blade 53 engages between the lower part P1 of the stack comprising the blanks 2 arriving continuously, and the upper part P2 which comprises the packet of blanks resting on the blade 53. It is then possible to take up, by any appropriate means, the upper pack of blanks P2 which is thus separated from the lower pack P1 which constitutes a pile still being formed.
  • the separation device shown in FIG. 3 could also be used with a device no longer ensuring a 180 ° reversal, as it is shown in FIG. 1A, but simply a 90 ° deviation from the blank file (FIG. 4), thus forming an ascending blank file, or from another angle greater than 90 °, for example 120 ° (FIG. 5).

Abstract

A machine for receiving and stacking blanks of cardboard or like material, of variable shape and format, cut out successively from a continuous web by a cutting-out apparatus located upstream of the machine, supplied in "scales" on an endless conveyor belt, overlapping one another, comprises a device for deviating the blanks through at least 90 DEG . This device comprises a drum of horizontal and transverse axis around which pass mobile endless belts extending up to a stacking stop, and passing around a motorized drive roller and guide rollers. At least one of the guide rollers is borne by a chassis mounted to pivot about the drum, so that the pivoting chassis may occupy two positions, namely a first horizontal position and a second vertical position.

Description

La présente invention concerne une machine de réception et d'empilage de flans de carton ou matière similaire, de forme et de format variables, découpés les uns à la suite des autres, dans une nappe continue, par un appareil de découpage situé en amont de la machine, alimentés en "écailles" sur un transporteur, en se chevauchant les uns les autres.The present invention relates to a machine for receiving and stacking blanks of cardboard or similar material, of variable shape and format, cut one after the other, in a continuous web, by a cutting device located upstream of the machine, fed in "scales" on a conveyor, overlapping each other.

On connaît actuellement diverses machines de réception de flans de carton qui sont découpés à partir d'une nappe de carton continue, par un appareil de découpage rotatif ou à plat situé en amont. Ces flans de carton, sur lesquels ont été également marquées des lignes de pliages, sont destinés à constituer ultérierement des emballages pour des produits divers.There are currently known various machines for receiving cardboard blanks which are cut from a continuous sheet of cardboard, by a rotary or flat cutting device located upstream. These cardboard blanks, on which fold lines have also been marked, are intended to subsequently constitute packaging for various products.

On connaît également un procédé d'empilage mis en oeuvre dans l'industrie des journaux et qui consiste à retourner sur elle-même, de 180°, une file continue de journaux successifs se chevauchant les uns les autres, pour les empiler à la partie supérieure de la machine de réception des journaux. Dans ce procédé les journaux s'engagent les uns à la suite des autres, à la base de la pile de journaux précédemment formée. De ce fait la pile se développe d'une manière continue à partir de sa base. Un tel procédé, appliqué à l'empilage de cahiers, c'est-à-dire de feuilles repliées sur elles-mêmes et superposées, est également décrit dans le brevet GB-A-2 034 285. Un tel procédé, s'il convient bien pour des journaux ou des feuilles de cahiers repliés sur eux-mêmes, de format rectangulaire régulier, ne peut être employé tel quel à l'empilage de flans de carton découpés en courtes séries de flans ayant des profils non réguliers et un format variable d'une série à l'autre.There is also known a stacking process implemented in the newspaper industry which consists of turning 180 ° on itself, a continuous line of successive newspapers overlapping each other, in order to stack them partially. top of the newspaper receiving machine. In this process the newspapers engage one after the other, at the base of the pile of newspapers previously formed. Thereby the pile grows continuously from its base. Such a method, applied to the stacking of notebooks, that is to say sheets folded on themselves and superimposed, is also described in patent GB-A-2,034,285. Such a method, if suitable for newspapers or folded notebooks, regular rectangular format, can not be used as is for stacking cardboard blanks cut into short series of blanks with non-regular profiles and a variable format from one series to another.

La présente invention vise à adapter ce procédé d'empilage dans une machine permettant, suivant le nombre de flans d'un tirage particulier, c'est-à-dire suivant qu'il s'agit de réceptionner des flans successifs faisant partie d'une série d'un grand nombre ou d'un petit nombre de flans soit de former et d'évacuer automatiquement des piles d'un nombre prédéterminé de flans, pour faciliter la reprise ultérieure des piles de flans, en fonction de leur utilisation en aval, soit de laisser sortir les flans en continu, les uns à la suite des autres, pour permettre une reprise manuelle aisée des flans.The present invention aims to adapt this stacking process in a machine allowing, depending on the number of blanks of a particular print, that is to say depending on whether it is to receive successive blanks forming part of a series of a large number or a small number of blanks either to form and automatically evacuate stacks of a predetermined number of blanks, to facilitate the subsequent recovery of the stacks of blanks, according to their use downstream , or to let the blanks come out continuously, one after the other, to allow easy manual recovery of the blanks.

A cet effet cette machine de réception et d'empilage de flans de carton ou matière similaire, de forme et de format variables, découpés les uns à la suite des autres, dans une nappe continue, par un appareil de découpage situé en amont de la machine, alimentés en "écailles" sur un tapis transporteur sans fin, en se chevauchant les uns les autres de telle façon que la bord antérieur d'un flan quelconque se trouve placé au dessus d'un flan précédent tandis que son bord postérieur est en contact avec le tapis transporteur ladite machine comportant un dispositif de déviation des flans d'au moins 90°, des courroies sans fin parallèles mobiles s'étendant entre la sortie du dispositif de déviation des flans et une butée transversale d'empilage qui arrête les flans successifs qui s'engagent les uns après les autres sous la pile de flans déjà formée, le dispositif de déviation des flans comportant un tambour d'axe horizontal et transversal autour duquel passent les courroies sans fin mobiles s'étendant jusqu'à la butée d'empilage, le tapis transporteur étant tangent au tambour, sous celui-ci, et passant autour d'un rouleau d'entraînement motorisé et de rouleaux de renvoi d'axes horizontaux et transversaux, est caractérisée en ce que l'un au moins des rouleaux de renvoi est porté par un châssis monté pivotant autour de l'axe d'un rouleau de renvoi inférieur, voisin du tambour, de telle manière que le châssis pivotant puisse occuper deux positions à savoir une première position horizontale dans laquel il s'étend longitudinalement dans l'axe de la machine, si bien que le tapis transporteur s'étend horizontalement à l'extérieur de la machine, pour permettre une sortie continue, dans le sens horizontal, de la file de flans, et une seconde position verticale dans laquelle le tapis transporteur est maintenu appliqué contre au moins le quart inférieur de la surface périphérique du tambour situé du côté extérieur de la machine par rapport à un plan diamétral vertical du tambour, si bien que, lorsque le châssis pivotant se trouve dans cette seconde position verticale, chaque file de flans est entraînée entre le tapis transporteur et les courroies sans fin mobiles le long du quart inférieur et extérieur au moins de la surface périphérique du tambour pour être déviés d'au moins 90° et être ensuite dirigés, par les courroies mobiles sans fin, vers la butée d'empilage.To this end, this machine for receiving and stacking blanks of cardboard or similar material, of variable shape and format, cut one after the other, in a continuous sheet, by a cutting device located upstream of the machine, fed in "scales" on an endless conveyor belt, overlapping each other in such a way that the front edge of any blank is placed above a previous blank while its rear edge is in contact with the conveyor belt, said machine comprising a device for deflecting the blanks by at least 90 °, endless parallel movable belts extending between the outlet of the device for deflecting the blanks and a transverse stacking stop which stops the blanks successive which engage one after the other under the stack of blanks already formed, the blank deflection device comprising a drum of horizontal and transverse axis around which pass the co movable endless tracks extending up to the stacking stop, the conveyor belt being tangent to the drum, under the latter, and passing around a motorized drive roller and return rollers of horizontal axes and transverse, is characterized in that at least one of the deflection rollers is carried by a chassis mounted to pivot about the axis of a lower deflection roller, adjacent to the drum, so that the pivoting chassis can occupy two positions, namely a first horizontal position in which it extends longitudinally in the axis of the machine, so that the conveyor belt extends horizontally outside the machine, to allow a continuous output, in the horizontal direction , the line of blanks, and a second vertical position in which the conveyor belt is kept applied against at least the lower quarter of the peripheral surface of the drum located on the outside of the machine pa r relative to a vertical diametral plane of the drum, so that, when the pivoting chassis is in this second vertical position, each row of blanks is driven between the conveyor belt and the endless belts movable along the lower quarter and outside the less than the peripheral surface of the drum to be deviated by at least 90 ° and then be directed, by the endless moving belts, towards the stacking stop.

La machine suivant l'invention est pourvue d'un appreil de commande centrale qui synchronise le fonctionnement des divers organes d'actionnement, tels que des vérins, et qui permet de déclencher automatiquement le cycle de libération et d'évacuation latérale d'une pile lorsque cette pile a atteint le nombre de flans désiré. Du fait que les flans constituant chaque pile arrivent successivement par le dessous de cette pile, la hauteur des piles n'est pas limitée.The machine according to the invention is provided with a central control device which synchronizes the operation of the various actuating members, such as jacks, and which makes it possible to automatically initiate the release and lateral discharge cycle of a battery. when this stack has reached the desired number of blanks. Because the blanks constituting each stack arrive successively from below this stack, the height of the stacks is not limited.

La machine suivant l'invention offre ainsi l'avantage qu'elle peut être utilisée très commodément de deux façons différentes, à savoir en fournissant, à sa sortie, une file continue de flans en "écailles", dans le sens horizontal et longitudinal, ou bien en fournissant, après déviation des flans, des piles de flans de hauteur variable ces piles étant évacuées latéralement, ce qui facilite leur utilisation ultérieure sur des machines d'emballage. Le premier cas, c'est-à-dire à sortie horizontale dans l'axe de la machine, est particulièrement intéressant lorsqu'il s'agit de séries courtes de flans; en effet on évite ainsi d'avoir à modifier les réglages de la machine. Par ailleurs on peut intervenir facilement sur le tambour, lorsque le châssis pivotant s'étend horizontalement, dans le cas d'un bourrage des flans.The machine according to the invention thus offers the advantage that it can be used very conveniently in two different ways, namely by providing, at its outlet, a continuous line of blanks in "scales", in the horizontal and longitudinal direction, or by supplying, after deflection of the blanks, stacks of blanks of variable height, these stacks being removed laterally, which facilitates their subsequent use on packaging machines. The first case, that is to say with a horizontal outlet in the axis of the machine, is particularly interesting when it comes to short series of blanks; indeed, this avoids having to modify the machine settings. Furthermore, it is easy to intervene on the drum, when the pivoting frame extends horizontally, in the case of jamming of the blanks.

La machine suivant l'invention se prête également bien à la formation de piles de flans croissant dans le sens horizontal (avec déviation de la file de flans de 90°) ou suivant une direction inclinée d'un angle quelconque supérieur à 90° par rapport à la direction horizontale d'alimentation des flans.The machine according to the invention lends itself equally ment well to the formation of stacks of blanks increasing in the horizontal direction (with deviation of the blank line by 90 °) or in an inclined direction of any angle greater than 90 ° relative to the horizontal direction of feeding blanks.

On décrira ci-après à titre d'exemples non limitatifs, diverses formes d'exécution de la présente invention, en référence au dessin annexé sur lequel:

  • Les figures 1A et 1B, raccordées entre elles le long de la ligne A-B, constituent une vue en coupe verticale et longitudinale d'une machine de réception et d'empilage de flans découpés suivant l'invention.
  • La figure 2 est une vue en plan partielle de la machine.
  • La figure 3 est une vue en coupe verticale et longitudinale d'une variante d'exécution du dispositif d'évacuation latérale des piles de flans prévu à la partie supérieure de la machine.
  • Les figures 4 et 5 sont des schémas de variantes d'exécution de la machine.
Various embodiments of the present invention will be described below, by way of nonlimiting examples, with reference to the appended drawing in which:
  • Figures 1A and 1B, connected together along the line AB, constitute a vertical and longitudinal sectional view of a machine for receiving and stacking blanks cut according to the invention.
  • Figure 2 is a partial plan view of the machine.
  • Figure 3 is a vertical and longitudinal sectional view of an alternative embodiment of the device for lateral discharge of the blank stacks provided at the upper part of the machine.
  • Figures 4 and 5 are diagrams of alternative embodiments of the machine.

La machine suivant l'invention qui est représentée sur les figures 1A et 1B, comprend un tapis transporteur amont 1, du type sans fin, sur le brin supérieur duquel sont déplacés, de la droite vers la gauche, des lans 2 se chevauchant les uns les autres. Ces flans 2 qui peuvent être par exemple des flans de carton prédécoupés pour constituer ultérieurement des emballages et imprimés sur leurs faces supérieures, forment des "écailles" sur le brin supérieur du transporteur 1, autrement dit le bord antérieur 2a d'un flan 2 quelconque se trouve placé au-dessus d'un flan 2 précédent tandis que son bord postérieur 2b, qui est en contact avec le tapis transporteur, est situé sous le flan 2 suivant. Ces flans 2 sont obtenus par découpge, en amont, d'une nappe continue, au moyen d'un appareil de découpage de tout type connu. Ils constituent, sur le transporteur amont, une seule file longitudinale ou plusieurs files parallèles et distantes les unes des autres.The machine according to the invention which is represented in FIGS. 1A and 1B, comprises an upstream conveyor belt 1, of the endless type, on the upper strand of which lans 2 overlapping one move from right to left. others. These blanks 2 which can be, for example, blanks of cardboard precut to later form packaging and printed on their upper faces, form "scales" on the upper strand of the conveyor 1, in other words the front edge 2a of any blank 2 is placed above a previous blank 2 while its rear edge 2b, which is in contact with the conveyor belt, is located under the next blank 2. These blanks 2 are obtained by cutting, upstream, a continuous sheet, by means of a cutting device of any known type. They constitute, on the upstream conveyor, a single longitudinal row or several parallel rows distant from each other.

Les flans 2 en "écailles" sont amenés à un tapis transporteur horizontal sans fin intermédiaire 3. Le tapis transporteur amont 1 et le tapis transporteur intermédiaire 3 sont tous les deux entraînes, à la même vitesse linéaire V, par un moteur 4 accouplé, par l'intermédiaire d'un mécanisme de transmission 5, à des rouleaux 6 et 7 assurant respectivement l'entraînement du tapis transporteur amont 1 et du tapis transporteur intermédiaire 3.The blanks 2 in "scales" are brought to a horizontal endless conveyor belt 3. The upstream conveyor belt 1 and the intermediate conveyor belt 3 are both driven, at the same linear speed V, by a motor 4 coupled, by via a transmission mechanism 5, to rollers 6 and 7 respectively driving the upstream conveyor belt 1 and the intermediate conveyor belt 3.

Au-dessus des rouleaux d'entraînement 6 et 7 des tapis transporteurs 1 et 3 est disposé un dispositif de taquage transversal 8 de tout type connu, lequel comporte, par file de flans 2, une paire de platines verticales et longitudinales 9, aminées d'un mouvement transversal alternatif et venant en contact avec les bords longitudinaux des flancs 2, pour aligner chaque file de flaps 2.Above the drive rollers 6 and 7 of the conveyor belts 1 and 3 is disposed a transverse jogging device 8 of any known type, which comprises, by row of blanks 2, a pair of vertical and longitudinal plates 9, aminated with 'an alternating transverse movement and coming into contact with the longitudinal edges of the flanks 2, to align each row of flaps 2.

Les flans 2 qui sont transportés en "écailles" de la droite vers la gauche sur le brin supérieur du tapis transporteur intermédiaire 3, arrivent ensuite à un dispositif 11 qui est prévu pour séparer la file continue de flans 2 en groupes de flans successifs correspondant chacun à un nombre de flans prédéterminé destinés à former ultérieurement une pile individuelle. Ce dispositif 11 est placé à la jonction du tapis transporteur intermédiaire 3 et d'un transporteur aval de retournement 12 qui comprend un tapis transporteur sans fin 13 passant sur un rouleau de renvoi amont 14 d'axe horizontal et transversal, lequel s'étend en regard et au même niveau qu'un autre rouleau de renvoi aval 15, d'axe horizontal et transversal, prévu pour le tapis transporteur intermédiaire 3.The blanks 2 which are transported in "scales" from right to left on the upper strand of the intermediate conveyor belt 3, then arrive at a device 11 which is provided for separating the continuous line of blanks 2 into groups of successive blanks each corresponding to a predetermined number of blanks intended to subsequently form an individual stack. This device 11 is placed at the junction of the intermediate conveyor belt 3 and a downstream reversing conveyor 12 which comprises an endless conveyor belt 13 passing over an upstream deflection roller 14 of horizontal and transverse axis, which extends in manhole and at the same level as another downstream deflection roller 15, of horizontal and transverse axis, provided for the intermediate conveyor belt 3.

Le dispositif 11 qui est prévu pour la séparation d'articles minces tels que des flans de carton, comprend un taquet inférieur 16, situé normalement, entre les deux rouleaux 14, 15, à fleur avec les brins supérieurs des deux tapis transporteurs 3 et 13 ou sous ces brins et qui peut être soulevé par un vérin 17. Au-dessus des rouleaux de renvoi 14 et 15 est articulé, autour d'un axe horizontal et transversal 18, un premier levier pivotant 19 qui porte, à sa partie inférieure, une platine horizontale 19a et qui est sollicité dans le sens des aiguilles d'une montre, c'est-à-dire vers le bas, par un ressort 22. Le dispositif 11 comporte également un second levier 20 qui est également articulé autour de l'axe 18, qui porte au moins un galet presseur ou cylindre 23, disposé au-dessus du tapis transporteur 13, et une butée 21 réglable en hauteur par rapport au cylindre 23, et qui peut être abaissé sous la commande d'un vérin 24. Le premier levier 19 est arrêté, dans son mouvement vers le bas, par une butée appropriée prévue sur le second levier 20.The device 11 which is provided for the separation of thin articles such as cardboard blanks, comprises a lower cleat 16, normally located, between the two rollers 14, 15, flush with the upper strands of the two conveyor belts 3 and 13 or under these strands and which can be lifted by a jack 17. Above the deflection rollers 14 and 15 is articulated, around a horizontal and transverse axis 18, a first pivoting lever 19 which carries, at its lower part, a horizontal plate 19a and which is urged clockwise, that is to say downwards, by a spring 22. The device 11 also includes a second lever 20 which is also articulated around the axis 18, which carries at least one pressure roller or cylinder 23, disposed above the conveyor belt 13, and a stop 21 adjustable in height relative to the cylinder 23, and which can be lowered under the control of a jack 24 The first lever 19 is stopped, in s it is moved downwards, by an appropriate stop provided on the second lever 20.

Par conséquent, lorsqu'un dispositif de comptage approprié a détecté le passage, à l'aplomb du dispositif de séparation 11, du nombre voulu de flans 2 destinés à constituer ultérieurement une pile, un appareil de commande centrale provoque l'abaissement, par suite de l'alimentation du vérin 24, des deux leviers 19 et 20 et par conséquent de la butée 21 et du galet ou cylindre presseur 23. Simultanément le taquet inférieur 16 est soulevé par le vérin 17, ce taquet soulevant à son tour des flans 2 en provoquant leur arrêt contre la butée 21 abaissée et en laissant s'éloigner les autres flans situés en avant. La butée 21 arrête ainsi le premier flan du groupe de flans suivant, destinés à constituer la pile suivante, en formant ainsi un espace vide ou "trou" a dans la file de flans. Dans le même temps le vérin 24 a abaissé le ou les galets presseurs 23 au contact des derniers flans 2 du groupe précédent pour favoriser l'entraînement de ces derniers flans du groupe précédent par le tapis transporteur 13. Ce tapis transporteur 13 est alors déplacé, après un temps réglable, à une vitesse V1 supérieure à la vitesse V du tapis transporteur intermédiaire 3, afin d'éviter une accumulation de flans trop importante contre la butée 21, lors de la formation du trou.Consequently, when an appropriate counting device has detected the passage, plumb with the separation device 11, of the desired number of blanks 2 intended to subsequently constitute a stack, a central control device causes the lowering, consequently of the supply to the jack 24, of the two levers 19 and 20 and consequently of the stop 21 and of the pressure roller or cylinder 23. Simultaneously the lower cleat 16 is lifted by the jack 17, this cleat in turn raising the blanks 2 by causing them to stop against the lowered stop 21 and letting the other blanks located forward move away. The stop 21 thus stops the first blank of the following group of blanks, intended to constitute the next stack, thus forming an empty space or "hole" a in the row of blanks. At the same time, the jack 24 has lowered the pressure roller (s) 23 in contact with the last blanks 2 of the previous group to promote the drive of these last blanks of the previous group by the conveyor belt 13. This conveyor belt 13 is then moved, after an adjustable time, at a speed V1 greater than the speed V of the intermediate conveyor belt 3, in order to avoid excessive accumulation of blanks against the stop 21, during the formation of the hole.

L'arrêt de la file de flans par la butée 21 s'effectue ainsi par "cissaillement" ou rupture de la continuité dans le sens vertical, et non pas par pincement de cette file de flans.The stop of the line of blanks by the stop 21 is thus effected by "shearing" or breaking of the continuity in the vertical direction, and not by pinching this line of blanks.

Après l'écoulement d'une période de temps prédéterminée, l'appareil de commande centrale provoque l'abaissement du taquet 16 et la remontée de la butée 21 ainsi que du galet presseur 23, ce qui a pour effet de libérer les premiers flans du groupe suivant qui ont été retenus en amont de la butée 21, en s'empilant progressivement. Ces premiers flans sont maintenus vers le bas par la platine 19a au début de la remontée de la butée 21. Le groupe suivant de flans 2 continue alors son déplacement vers la gauche en passant du tapis transporteur intermédiaire 3 au tapis transporteur aval de déviation des flans 13 (de retournement de 180° dans cette forme d'exécution particulière), ce groupe étant alors séparé du groupe précédent par un espace vide ou "trou" a.After the expiration of a predetermined period of time, the central control device causes the cleat 16 to be lowered and the stop 21 as well as the pressure roller 23 to be raised, which has the effect of releasing the first blanks from the following group which have been retained upstream of the stop 21, gradually stacking. These first blanks are held down by the plate 19a at the start of the ascent of the stop 21. The next group of blanks 2 then continues its movement to the left, passing from the intermediate conveyor belt 3 to the downstream conveyor belt for deflecting the blanks 13 (180 ° reversal in this particular embodiment), this group then being separated from the previous group by an empty space or "hole" a.

L'entraînement du tapis transporteur sans fin 13 est réalisé au moyen d'un moteur 25 qui est accouplé à un rouleau 26 d'entraînement du tapis transporteur 13, par l'intermédiaire d'un mécanisme de transmission 25a.The drive of the endless conveyor belt 13 is carried out by means of a motor 25 which is coupled to a drive roller 26 of the conveyor belt 13, by means of a transmission mechanism 25a.

Le brin horizontal supérieur du tapis transporteur aval de retournement 13 passe autour de la moitié gauche de la périphérie d'un tambour de retournement 36, d'axe horizontal et transversal, situé au-dessus du tapis transporteur 13 et entraîné en rotation par le moteur 25, par l'intermédiaire d'un mécanisme de liaison approprié non représenté. Il passe ensuite sur un premier rouleau de renvoi supérieur 27 tangent à la partie supérieure du tambour 36, puis successivement sur un deuxième rouleau de renvoi supérieur 28, situé au même niveau que le précédent mais décalé vers la gauche, un troisième rouleau de renvoi 29 inférieur, situé sous le brin horizontal du tapis 13, puis sur le rouleau d'entraînement 26 et sur un rouleau de renvoi de tension inférieur 31, à position réglable pour ajuster la tension du tapis transporteur 13, pour revenir au rouleau de renvoi amont 14. Le rouleau de renvoi de tension inférieur 31 est porté par une paire de bras parallèles 32 articulés autour d'un axe horizontal et transversal, à leur partie supérieure, et qui sont actionnés par un vérin de tension horizontal et longitudinal 33 monté à la partie inférieure du bâti de la machine.The upper horizontal strand of the downstream conveyor belt 13 passes around the left half of the periphery of a turn drum 36, of horizontal and transverse axis, located above the conveyor belt 13 and rotated by the motor. 25, via an appropriate linkage mechanism not shown. It then passes over a first upper deflection roller 27 tangent to the upper part of the drum 36, then successively over a second upper deflection roller 28, located at the same level as the previous one but shifted to the left, a third deflection roller 29 lower, located under the horizontal strand of the belt 13, then on the drive roller 26 and on a lower tension return roller 31, with an adjustable position to adjust the tension of the conveyor belt 13, to return to the upstream return roller 14 The lower tension return roller 31 is carried by a pair of parallel arms 32 articulated around a horizontal and transverse axis, at their upper part, and which are actuated by a horizontal and longitudinal tension cylinder 33 mounted to the part bottom of the machine frame.

Les premier et deuxième rouleaux de renvoi supérieurs 27 et 28 pour le tapis transporteur 13 sont montés à rotation sur un châssis 34 qui est monté pivotant sur le bâti de la machine, autour d'un axe horizontal et transversal confondu avec celui du rouleau de renvoi inférieur 29. Le mouvement de pivotement du châssis 34 est commandé par un mécanisme 30, prévu d'un côté de la machine et qui peut être actionné manuellement ou par un moteur.The first and second upper deflection rollers 27 and 28 for the conveyor belt 13 are rotatably mounted on a frame 34 which is pivotally mounted on the machine frame, around a horizontal and transverse axis coincident with that of the deflection roller lower 29. The pivoting movement of the chassis 34 is controlled by a mechanism 30, provided on one side of the machine and which can be actuated manually or by a motor.

Le châssis 34 peut être amené dans une position horizontale, comme il est indiqué dans la partie gauche de la figure 1A, et dans ce cas les groupes de flans 2 sortent horizontalement, à l'extrémité gauche ou aval de la machine, en étant séparés ou non les uns des autres par des trous a formés antérieurement par le dispositif de séparation 11 et sans être retournés, autrement dit avec les faces imprimées des flans tournées vers le haut. Cette position horizontale du châssis 34 convient lorsqu'il s'agit de séries courtes de flans ou de flans ayant une forme irrégulière se prêtant mal à un empilage automatique.The frame 34 can be brought into a horizontal position, as indicated in the left part of FIG. 1A, and in this case the groups of blanks 2 come out horizontally, at the left or downstream end of the machine, being separated or not from each other by holes previously formed by the separation device 11 and without being turned over, in other words with the printed faces of the blanks facing upwards. This horizontal position of the frame 34 is suitable in the case of short series of blanks or blanks having an irregular shape which do not lend themselves to automatic stacking.

Le châssis 34 peut être également amené dans une position verticale, ainsi qu'il est également représenté sur la figure 1A. Dans cette position verticale la partie aval du brin supérieur du tapis transporteur 13 vient se plaquer contre un ensemble de courroies sans fin parallèles 35, passant autour de la moitié gauche du tambour de retournement 36. Les courroies 35 peuvent être constituées par des courroies cylindriques s'engageant dans des gorges, à section droite semi-circulaire, du tambour 36. Le brin supérieur du tapis transporteur s'applique ainsi sur la moitié de la surface périphérique du tambour 36 située à gauche du plan diamétral vertical et sur laquelle sont enroulées les courroies sans fin 35. Par conséquent, lorsque le châssis 34 est en position verticale, les flans 2 qui sont déplacés de la droite vers la gauche sur le brin supérieur du tapis transporteur 13, sont pris en pincés entre les courroies 35 d'une part et le tapis transporteur 13 d'autre part et ils sont ainsi entraînés, tout en restant pincés et maintenus avec leurs espacements respectifs, de la génératrice la plus basse du tambour 36 à sa génératrice la plus haute.The frame 34 can also be brought into a vertical position, as it is also shown in FIG. 1A. In this vertical position, the downstream part of the upper strand of the conveyor belt 13 is pressed against a set of parallel endless belts 35, passing around the left half of the turning drum 36. The belts 35 can be constituted by cylindrical belts s 'engaging in grooves, in semi-circular cross section, of the drum 36. The upper strand of the conveyor belt thus applies to half of the peripheral surface of the drum 36 located to the left of the vertical diametral plane and on which are wound the endless belts 35. Consequently, when the chassis 34 is in the vertical position, the blanks 2 which are moved from right to left on the upper strand of the conveyor belt 13, are clamped between the belts 35 on the one hand and the conveyor belt 13 on the other hand and they are thus driven, while remaining pinched and maintained with their respective spacings, of the generator the lowest of the drum 36 at its highest generatrix.

Le vérin 33 de réglage de la tension du tapis transporteur 13 est prévu pour tenir compte de la variation de la longueur de la partie du tapis transporteur 13 s'étendant entre la génératrice inférieure du tambour 36 et le premier rouleau de renvoi supérieur 27, respectivement dans les deux positions horizontale et verticale du châssis pivotant 34. Le vérin 33 ajuste la position du rouleau de renvoi mobile 31 de telle façon que le tapis transporteur 13 ait toujours une tension correcte, quelle que soit la position du châssis pivotant 34.The cylinder 33 for adjusting the tension of the conveyor belt 13 is provided to take account of the variation in the length of the part of the conveyor belt 13 extending between the lower generator of the drum 36 and the first upper deflection roller 27, respectively in the two horizontal and vertical positions of the pivoting frame 34. The jack 33 adjusts the position of the movable deflection roller 31 so that the conveyor belt 13 always has the correct tension, whatever the position of the pivoting frame 34.

Après leur retournement à 180° les flans 2 sont libérés à la partie supérieure du tambour 36, à l'endroit où celui-ci est tangent au premier rouleau de renvoi supérieur 27 du tapis transporteur 13. A partir de ce moment les flans 2 qui ont été ainsi retournés de 180°, sont déplacés de la gauche vers la droite par les courroies 35, en direction d'un dispositif d'empilage 37 prévu à la partie supérieure de la machine. Ces flans 2 se présentent alors avec une disposition en "écailles" inverse de leur disposition à la partie inférieure de la machine, c'est-à-dire que le bord antérieur 2a d'un flan 2 se trouve placé sous un flan précédent et le bord postérieur 2b de ce même flan 2 se trouve placé au-dessus du flan 2 suivant, comme il appraît sur le dessin. Les flans 2, ainsi retournés de 180°, sont déplacés par les brins supérieurs des courroies 35 jusqu'à une butée transversale d'empilage 38 faisant partie du dispositif d'empilage 37 et qui peut être escamotée verticalement sous les courroies 35, sous l'action d'un mécanisme commandé par un vérin 39.After their 180 ° reversal the blanks 2 are released at the upper part of the drum 36, at the place where it is tangent to the first upper deflection roller 27 of the conveyor belt 13. From this moment the blanks 2 which have thus been turned 180 °, are moved from left to right by the belts 35, in the direction of a stacking device 37 provided at the top of the machine. These blanks 2 are then presented with an arrangement in "scales" opposite to their arrangement at the lower part of the machine, that is to say that the front edge 2a of a blank 2 is placed under a previous blank and the rear edge 2b of the same blank 2 is placed above the next blank 2, as it appears in the drawing. The blanks 2, thus turned 180 °, are moved by the upper strands of the belts 35 to a transverse stacking stop 38 forming part of the stacking device 37 and which can be retracted vertically under the belts 35, under the action of a mechanism controlled by a jack 39.

Pour faciliter la formation des piles la machine peut comporter, en amont de la butée d'empilage 38, au moins un galet (ou platine) de pressage 49 monté sur un support 51 réglable longitudinalement, ce galet pouvant être pressé vers le bas par un vérin ou ressort 52. Ce galet 49 est destiné à exercer une pression sur les flans 2 se trouvant sur le brin supérieur des courroies 35, dans une position appropriée variant longitudinalement en fonction du format des flans 2, pour faciliter leur introduction à la base de la pile. Le support 51 est également aménagé pour constituer un guidage du côté amont de la pile au cours de sa formation.To facilitate the formation of the batteries, the machine may comprise, upstream of the stacking stop 38, at least one pressing roller (or plate) 49 mounted on a support 51 adjustable longitudinally, this roller being able to be pressed downwards by a cylinder or spring 52. This roller 49 is intended to exert pressure on the blanks 2 located on the upper strand of the belts 35, in an appropriate position varying longitudinally as a function of the format of the blanks 2, to facilitate their introduction to the base of the battery. The support 51 is also arranged to constitute a guide on the upstream side of the stack during its formation.

Par conséquent les groupe de flans 2 qui sont amenés par les brins supérieurs des courroies 35, en se déplacant de la gauche vers la droite sur la figure 1B, viennent au contact de la butée transversale 38 par laquelle ils sont arrêtés et du fait de leur disposition en "écailles" sur les courroies 35, il s'engagent successivement les uns sous les autres en formant une pile de hauteur progressivement croissante. Lorsque une cellule photoélectrique 40, montée à la partie supérieure de la machine, au-dessus des courroies 35, par exemple à proximité du tambour de renvoi 36, détecte le passage d'un trou a entre deux groupes de flans 2 successifs, cette cellule envoie un signal à un appareil de commande centrale non représenté qui déclenche, avec une temporisation appropriée, le processus d'évacuation. Autrement dit tous les flans du groupe en cours d'empilage, jusqu'au dernier de ce groupe, sont autorisés à se déplacer de la gauche vers la droite jusqu'à la butée d'empilage 38, pour former la pile de flans arrêtés au contact de cette butée.Consequently the groups of blanks 2 which are brought by the upper strands of the belts 35, moving from the left to the right in FIG. 1B, come into contact with the transverse stop 38 by which they are stopped and because of their arrangement in "scales" on the belts 35, they engage successively one under the other by forming a pile of progressively increasing height. When a photoelectric cell 40, mounted at the top of the machine, above the belts 35, for example near the deflection drum 36, detects the passage of a hole a between two successive groups of blanks 2, this cell sends a signal to a central control unit (not shown) which initiates, with an appropriate delay, the evacuation process. In other words, all the blanks in the group being stacked, up to the last of this group, are allowed to move from left to right until the stacking stop 38, to form the stack of blanks stopped at contact of this stop.

Lorsque le dernier flan 2 du groupe de flans considéré a été engagé sous la pile déjà formée, l'appareil de commande centrale provoque l'alimentation du vérin 39, pour abaisser la butée d'empilage escamotable 38. Cette butée 38 libère alors la pile de flans formée contre elle, cette pile étant entraînée, par les courroies 35, vers la droite sur la figure 1B, jusqu'à ce qu'elle vienne rencontrer une butée 42 d'arrêt des piles. A ce moment la vitesse des courroies 35 a été réduite à la valeur V du transporteur 3, afin de ne pas transporter les piles à une vitesse trop grande risquant de provoquer leur déformation.When the last blank 2 of the group of blanks considered has been engaged under the already formed stack, the central control device causes the supply of the jack 39, to lower the retractable stacking stop 38. This stop 38 then releases the stack blanks formed against it, this stack being driven, by the belts 35, to the right in FIG. 1B, until it comes to meet a stop 42 for stopping the stacks. At this time the speed of the belts 35 has been reduced to the value V of the conveyor 3, so as not to transport the batteries at too high a speed, risking their deformation.

Cette butée 42 est située juste après un dispositif d'évacuation latérale 43 comprenant un ensemble de rouleaux 44 s'étendant longitudinalement et qui sont portés par un support 45 mobile verticalement sous la commande d'un vérin 46. Ces rouleaux 44 du dispositif d'évacuation latérale 43 peuvent être entraînés en rotation sur eux-mêmes au moyen de bandes sans fin d'entraînement 47 qui sont en contact avec les parties inférieures des rouleaux 44 et qui sont mues par un moteur 48 par l'intermédiaire d'un mécanisme de transmission approprié. Au moment où la pile de flans arrive au contact de la butée d'évacuation des piles 42, l'appareil de commande centrale provoque le soulèvement du support 45 et de l'ensemble des rouleaux d'évacuation 44, puis l'écartement de la butée d'évacuation 42 au moyen d'un vérin 42a, puis l'alimentation électrique du moteur 48 pour faire tourner ces rouleaux 44. Du fait que les rouleaux 44 sont soulevés au-dessus des courroies 35, ils viennent en contact avec la face inférieure du dernier flan de la pile formée, ils soulèvent quelque peu cette pile et par leur rotation ils provoquent l'évacuation de la pile dans le sens transversal d'un côté ou de l'autre de la machine. La pile de flans peut être alors reprise par une chaîne de manutention quelconque.This stop 42 is located just after a lateral discharge device 43 comprising a set of rollers 44 extending longitudinally and which are carried by a support 45 movable vertically under the control of a jack 46. These rollers 44 of the device lateral discharge 43 can be rotated on themselves by means of endless drive belts 47 which are in contact with the lower parts of the rollers 44 and which are driven by a motor 48 by means of a mechanism appropriate transmission. When the stack of blanks comes into contact with the battery discharge stop 42, the central control device causes the support 45 and the assembly of discharge rollers 44 to be raised, then the spacing of the evacuation stop 42 by means of a jack 42a, then the electrical supply of the motor 48 to rotate these rollers 44. Because the rollers 44 are lifted above the belts 35, they come into contact with the face bottom of the last blank of the stack formed, they lift this stack somewhat and by their rotation they cause the evacuation of the stack in the transverse direction on one side or the other of the machine. The stack of blanks can then be taken up by any handling chain.

Dans la variante d'exécution de l'invention représentée sur la figure 3 la machine ne comporte plus le dispositif il destiné à former des "trous" de séparation entre les groupes de flans successifs formant ultérieurement des piles individuelles. Autrement dit les flans 2 arrivent sur les brins supérieurs des courroies 35 en formant un flot continu, le tapis 13 se déplaçant alors toujours à la même vitesse. De ce fait ces flans forment, au contact de la butée d'empilage 38, une pile croissant sans interruption.In the variant embodiment of the invention shown in FIG. 3, the machine no longer includes the device 11 intended to form "holes" of separation between the groups of successive blanks subsequently forming individual stacks. In other words, the blanks 2 arrive on the upper strands of the belts 35 by forming a continuous stream, the belt 13 then always moving at the same speed. As a result, these blanks form, in contact with the stacking stop 38, a continuously increasing stack.

Pour séparer cette pile, croissant d'une manière continue, en paquets de flans comprenant chacun un nombre de flans prédéterminé, il est prévu, en arrière de la butée 38, au moins une lame horizontale 53, pouvant être déplacée horizontalement et longitudinalement, au-dessus de la butée 38, par un vérin longitudinal 54. Cette lame 53, à bout arrondi, est destinée à être introduite horizontalement et longitudinalement dans la pile en cours de formation, pour la séparer en deux parties à savoir une partie inférieure P1 et une partie supérieure P2. Pour faciliter l'introduction de la lame 53 on prévoit un pousseur 55, actionné par un vérin 56 ou tout autre dispositif de commande approprié, et qui est disposé, en arrière de la butée 38, de manière à soulever la partie supérieure P2 de la pile en cours de formation, par son côté postérieur ou droit qui se trouve en regard de l'extrémité de la lame 53. Pour que le pousseur écarteur 55 puisse fonctionner correctement, son inclinaison par rapport à la verticale doit être comprise entre 15 et 30°. De ce fait, lorsqu'on alimente le vérin 56, le pousseur écarteur 55 est déplacé vers le haut et vers la gauche, il vient en contact avec le côté droit d'un flan de la pile en cours de formation, et il soulève légèrement ce flan, ainsi que la partie supérieure P2 de la pile. A ce moment le vérin 54 déplace la lame 53 vers la gauche si bien que cette lame 53 s'engage entre la partie inférieure P1 de la pile comportant les flans 2 arrivant en continu, et la partie supérieure P2 qui comprend le paquet de flans reposant sur la lame 53. Il est alors possible de reprendre, par tous moyens appropriés, le paquet supérieur de flans P2 qui se trouve être ainsi séparé du paquet inférieur P1 qui constitue une pile toujours en cours de formation.To separate this stack, growing continuously, into blanket packs each comprising a predetermined number of blanks, there is provided, behind the stop 38, at least one horizontal blade 53, which can be moved horizontally and longitudinally, at above the stop 38, by a longitudinal cylinder 54. This blade 53, with rounded tip, is intended to be introduced horizontally and longitudinally into the stack being formed, to separate it into two parts, namely a lower part P1 and an upper part P2. To facilitate the introduction of the blade 53 is provided a pusher 55, actuated by a jack 56 or any other suitable control device, and which is arranged, behind the stop 38, so as to raise the upper part P2 of the pile being formed, by its rear or right side which is opposite the end of the blade 53. For the spreader pusher 55 to function properly, its inclination relative to the vertical must be between 15 and 30 °. Therefore, when feeding the jack 56, the spreader pusher 55 is moved up and to the left, it comes into contact with the right side of a blank of the stack being formed, and it lifts slightly this blank, as well as the upper part P2 of the stack. At this moment the jack 54 moves the blade 53 to the left so that this blade 53 engages between the lower part P1 of the stack comprising the blanks 2 arriving continuously, and the upper part P2 which comprises the packet of blanks resting on the blade 53. It is then possible to take up, by any appropriate means, the upper pack of blanks P2 which is thus separated from the lower pack P1 which constitutes a pile still being formed.

Le dispositif de séparation représenté sur la figure 3 pourrait être utilisé également avec un dispositif assurant non plus un retournement à 180°, comme il est représenté sur la figure 1A, mais simplement une déviation de la file de flans de 90° (figure 4), pour former ainsi une file de flans ascendante, ou encore d'un autre angle supérieur à 90°, par exemple de 120° (figure 5).The separation device shown in FIG. 3 could also be used with a device no longer ensuring a 180 ° reversal, as it is shown in FIG. 1A, but simply a 90 ° deviation from the blank file (FIG. 4), thus forming an ascending blank file, or from another angle greater than 90 °, for example 120 ° (FIG. 5).

Claims (9)

1. Machine for receiving and stacking blanks (2) of cardboard or like material, of variable shape and format, cut out successively from a continuous web by a cutting-out apparatus located upstream of the machine, supplied in "scales" on an endless conveyor belt (13), overlapping one another so that the front edge of one blank is located above a former blank and its rear edge (2b) is engaged with the conveyor belt (13), comprising a device for deviating the blanks through at least 90°, parallel, mobile endless belts (35) extending between the outlet of the blank deviating device (2) and a transverse stacking stop (38) which stops the successive blanks (2) which engage one after the other under the stack of blanks already formed, the blank deviating device comprising a drum (36) of horizontal and transverse axis around which pass the mobile endless belts (35) extending up to the stacking stop (38), the conveyor belt (13) being tangential to the drum, therebeneath, and passing around a motorized drive roller (26) and guide rollers (14, 27, 28, 29, 31) of horizontal and transverse axes, characterized in that at least one of the guide rollers (27, 28) is borne by a chassis (34) mounted to pivot about the axis of a lower guide roller (29), close to the drum, so that the pivoting chassis (34) may occupy two positions, namely a first horizontal position in which it extends longitudinally in the axis of the machine, so that the conveyor belt (13) extends horizontally outside the machine, to allow a continuous outlet, in the horizontal direction, of the line of blanks (2), and a second vertical position in which the conveyor belt (13) is maintained applied against at least the lower quarter of the peripheral surface of the drum (36) located outside the machine with respect to a vertical diametral plane of the drum, so that, when the pivoting chassis (34) is in this second vertical position, each line of blanks (2) is driven between the conveyor belt (13) and the mobile endless belts (35) along the lower and outer quarter at least of the peripheral surface of the drum to be deviated through at least 90° and then be directed, by the mobile endless belts (35), towards the stacking stop (38).
2. Machine according to Claim 1 characterized in that the endless conveyor belt (13) passes over first and second upper guide rollers (27, 28), borne by the pivoting chassis (34), then over the third lower guide roller (29) about the axis of which the chassis (34) may pivot, then over the drive roller (26) and over a fourth lower tension guide roller (31), with adjustable position, in order to adjust the tension of the conveyor belt (13), to return to a fifth upstream guide roller (14).
3. Machine according to Claim 2 characterized in that the lower tension guide roller (31) is borne by a pair of parallel arms (32) articulated about a horizontal and transverse axis, and which are actuated by a horizontal and longitudinal tension jack (33) mounted in the lower part of the frame of the machine.
4. Machine according to any of Claims 1 to 3 comprising, upstream of the deviating device, a device (11) separating the continuous line of blanks (2) into successive groups of blanks each corresponding to a predetermined number of blanks intended subsequently to form an individual stack, this device provoking, between two successive groups, a "hole" (a) whose passage is then detected by a photoelectric sensor (46) placed at the outlet of the deviation device and upstream of the stacking stop (38), the stacking stop (38) being mounted on a support vertically mobile under the control of a jack (39) so as to be able to be lowered beneath the plane of the belts (35) when a stack of blanks has been formed, characterized in that a transverse evacuation stop (42) is disposed downstream of the stacking stop (38) to stop the individual stacks, and, upstream of the evacuation stop (42), there is provided a device for lateral evacuation of the stacks of blanks comprising, between the stacking stop (38) and the stack evacuation stop (42), a support (45) mobile vertically on the frame of the machine, means (46) for vertically displacing this support (45), longitudinal rollers (44) mounted to rotate on the support (45), being located between the mobile endless belts (35), and means (47, 48) for driving the longitudinal rollers (44) in rotation.
5. Machine according to Claim 4 characterized in that means (42a) are provided for spacing the evacuation stop (42) from a stack of blanks formed before the longitudinal rollers (44) are driven in rotation.
6. Machine according to any of Claims 4 and 5 characterized in that the separating device (11) is placed at the join of an intermediate conveyor belt (3) and of the endless conveyor belt (13), in contact with the drum (36), passing over an upstream guide roller (14) of horizontal and transverse axis, which extends opposite and at the same level as another downstream guide roller (15), of horizontal and transverse axis, provided for the intermediate conveyor belt (3), the device (11) comprising a lower catch (16), located normally, between the two guide rollers (14, 15), flush with the upper sides of the two conveyors (3, 13) or under these sides and which may be raised by a jack (17) and, above the guide rollers (14, 15), a first lever (19) which bears a lower horizontal plate (19a), and a second lever (20) which bears a stop (21) and against which is applied the first lever (19), under the action of a spring (22), these two levers (19, 20) being mounted to pivot about a horizontal and transverse axis (18), the second lever (20) being adapted to be lowered by a jack (22), the second lever (20) also bearing at least one presser roller (23) disposed above the conveyor belt (13) and which may be lowered jointly with the second lever (20), so as to create, by lowering the stop (21) and raising the catch (16), a rupture of the continuity of the line of blanks (2) in the vertical direction and consequent a "hole" in this line.
7. Machine according to any of Claims 1 to 3 characterized in that it comprises, to the rear of the stacking stop (38) and in a position thereadja- cent, a device for separating a stack in the course of formation, this device comprising at least one blade (53) adapted to be displaced longitudinally and in reciprocating manner in a horizontal plane, so as to be introduced, above the stop (38), between two superposed blanks (2) of a continuously forming stack, so as to isolate, from this stack, an upper part (P2) containing a predetermined number of blanks and which may be taken up by lateral evacuation means.
8. Machine according to Claim 7, characterized in that the separating device comprises a pusher (55) actuated by a jack (56) and which is disposed so as to be able to raise the rear part of one of the blanks of the continuously forming stack, in order to facilitate introduction of the separating blade (53), this pusher being inclined by an angle of 15° to 30° with respect to the vertical, in the direction of the stack of blanks.
9. Machine according to any of the preceding Claims characterized in that it comprises, in its upper part, at least one roller or plate (49) mounted on a longitudinally adjustable support (51) and adapted to be pressed downwardly by a jack (52), this roller or plate (49) being intended to exert a pressure on the blanks (2) located on the upper side of the belts (35), in an appropriate position varying longitudinally as a function of the format of the blanks (2), the support serving (51) as vertical guide for the upstream side of the stack in the course of formation.
EP87400941A 1986-04-29 1987-04-23 Machine for receiving and piling cut sheets Expired - Lifetime EP0244308B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87400941T ATE54289T1 (en) 1986-04-29 1987-04-23 MACHINE FOR PICKING AND STACKING CUT SHEETS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8606244A FR2597847B1 (en) 1986-04-29 1986-04-29 MACHINE FOR RECEIVING AND STACKING CUT BLANKS
FR8606244 1986-04-29

Publications (2)

Publication Number Publication Date
EP0244308A1 EP0244308A1 (en) 1987-11-04
EP0244308B1 true EP0244308B1 (en) 1990-07-04

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EP87400941A Expired - Lifetime EP0244308B1 (en) 1986-04-29 1987-04-23 Machine for receiving and piling cut sheets

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US (1) US4810153A (en)
EP (1) EP0244308B1 (en)
JP (1) JPS62264158A (en)
AT (1) ATE54289T1 (en)
DE (1) DE3763530D1 (en)
FR (1) FR2597847B1 (en)

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Also Published As

Publication number Publication date
US4810153A (en) 1989-03-07
DE3763530D1 (en) 1990-08-09
ATE54289T1 (en) 1990-07-15
FR2597847A1 (en) 1987-10-30
JPS62264158A (en) 1987-11-17
FR2597847B1 (en) 1989-04-21
EP0244308A1 (en) 1987-11-04

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