EP0453983A1 - Device for interception of sheets set down on top of a pile in a package forming machine - Google Patents

Device for interception of sheets set down on top of a pile in a package forming machine Download PDF

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Publication number
EP0453983A1
EP0453983A1 EP91106310A EP91106310A EP0453983A1 EP 0453983 A1 EP0453983 A1 EP 0453983A1 EP 91106310 A EP91106310 A EP 91106310A EP 91106310 A EP91106310 A EP 91106310A EP 0453983 A1 EP0453983 A1 EP 0453983A1
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EP
European Patent Office
Prior art keywords
pinion
stack
sheets
crown
movable part
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.)
Granted
Application number
EP91106310A
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German (de)
French (fr)
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EP0453983B1 (en
Inventor
Jean-Bernard De Dompierre
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Bobst Mex SA
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Bobst SA
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Publication of EP0453983A1 publication Critical patent/EP0453983A1/en
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Publication of EP0453983B1 publication Critical patent/EP0453983B1/en
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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
    • B65H31/00—Pile receivers
    • B65H31/32—Auxiliary devices for receiving articles during removal of a completed pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/30—Other features of supports for sheets
    • B65H2405/32—Supports for sheets partially insertable - extractable, e.g. upon sliding movement, drawer
    • B65H2405/323—Cantilever finger member, e.g. reciprocating in parallel to plane of handled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the present invention relates to a device which, in a machine for working elements in the form of plates or sheets, such as cutting, upsetting and / or printing for the production of packaging, allows, during a formation of a stack of sheets, to temporarily intercept and receive the sheets, while they are deposited one by one on the top of the stack.
  • a device comprises the characteristics defined in the preamble of claim 1.
  • Such a device can be used, for example, as shown in Figure 1 of the accompanying drawing, in a so-called sheet reception station and located at the outlet or following a cutting press.
  • the sheets F which come out one by one from the press P1 are transported by gripper bars B1 mounted on a chain of chains C3, and successively deposited one on the other to form a stack E1.
  • the stack is complete, it is known to insert very quickly, that is to say during the very short time which elapses between the last sheet deposited on the top of the stack and the next, an intermediate grid 45 which will cover the top of the stack and on which a new stack can temporarily start. During this time, the entire stack can be removed from the receiving station.
  • the station is equipped with a battery holder provided with a table T1 in the form of a vertically movable grid.
  • a table T1 in the form of a vertically movable grid.
  • the movable table T1 is mounted on the upper end of a vertical upright M1 located between two conveyor belts C1; once the stack is complete, it suffices to lower the vertical upright M1 enough so that the bottom sheet of the complete stack E2 can bear, through the openings of the grid forming the movable table T1, on the two conveyor belts Who will transport her out of the station. Once the E2 stack has been removed, the grid or table T1 is again moved upwards in contact with the new temporarily formed E1 stack resting on the interposed grid 45.
  • the grid elements of the latter T1 can project above the grid through corresponding openings (as shown 45 in broken lines T'1).
  • the intermediate grid 45 can be compared to a fork between the teeth from which the support elements of the table T1 protrude and which, once released from the weight of the new stack, can be easily removed from the bottom of the stack, this in the direction of the teeth to allow, between their free ends, the escape of the support elements of the table T1 relative to the fork or intermediate grid 45. It should be noted that all the above operations can be performed without stopping the machine.
  • the object of the present invention is to eliminate the drawbacks mentioned above. This object is achieved by a device according to claim 1.
  • the sheet interception device comprises a fixed horizontal rectangular frame C consisting of two side plates 10, 10 ', a transverse plate 11a and transverse profiles 11b-11h.
  • the plates 10, 10 ', 11a and the sections 11b-11h are joined together at their ends by means of screws 12. If, in FIG. 1, it is considered that the sheets arrive from an earlier station situated on the right, by example of a waste ejection station of a cutting machine, the dimensions of the frame C are large enough that the two side plates 10, 10 'are each on one side of the stack to be formed.
  • the frame C is provided with brackets 14 for fixing to the frame B of the machine.
  • a large crown with internal toothing 20 Inside the left end of the frame C, that is to say the far end of the stack, is mounted horizontally a large crown with internal toothing 20.
  • the crown 20 is fixed, using screw 15, on the underside of the transverse sections 11b-11h.
  • spacers 16 are interposed between sections 11b, 11g, 11f and the crown 20.
  • a movable pinion 30, the number of teeth of which is equal to half that of the crown 20, is mounted inside and in taken with the teeth of the latter.
  • the pinion 30 is mounted in free rotation on a pin 31 fixed on the first end of a horizontal lever 32 whose other end is fixed on a vertical output shaft R1 of a reduction gear R coupled to a motor M.
  • L ' assembly constituted by the reducer R and the motor M is fixed, by means of screws 33, to a plate 34 (not shown in Figure 1 to facilitate understanding) welded to the underside of two transverse sections 11g, 11f.
  • the carriage 40 movable horizontally in the left-right direction and vice versa.
  • the carriage 40 consists of a transverse section 41 provided at each of its ends with a horizontal bar 42, respectively 42 ', extending parallel to the corresponding side plates 10, 10'.
  • Each bar 42, 42 ' is provided with two rollers 48, 48' engaged with a guide groove formed by two bars 43, respectively 43 ', provided on each side plate 10, 10'.
  • Several U-shaped profiles 45 are mounted on the profile 41. The profiles are fixed at one end to the profile 41 so that together they have a support in the form of a fork (as mentioned above) intended to be moved over the entire stack to temporarily intercept and receive the sheets.
  • FIG. 1 shows the instant when the carriage 40 is at the end of its travel at the left end, ie at the moment when the U-shaped profiles 45 are completely out of the top of the stack, i.e. are not in a condition to intercept the sheets.
  • the two pins 44, 31 and the axis of rotation of the vertical shaft R1 of the pinion 30 are on a single straight line, namely on the central axis O1 of the machine, the axis the pin 44 located on the point of tangency of the pinion 30 relative to the crown 20.
  • the motor M is stopped, and the complete stack E2 situated below the profiles 45 is evacuated, that is to say removed from the movable table T1 of the battery holder mentioned above.
  • the table T1 is then moved upwards until its support elements (also mentioned above) protrude, between and over the U-shaped profiles 45 so as to release the latter from the pile E1 temporarily formed on them.
  • the motor M is restarted to bring the carriage 40 to the left, that is to say to bring said point of tangency to the starting point, that is to say to the left side of the crown 20 so that the U-profiles can no longer intercept the sheets.
  • all the sections 41, 45 constituting the carriage 40 are made of light material, for example, of aluminum alloy.
  • Figure 3 shows how the frame C of the device is arranged below the return location of a chain train C3 on which are clamped bars B1 engaged with the front edge of the sheets.
  • the sheets F are brought, from a cutting press P1, above the place where a stack E1 (or E2) is being formed.
  • the stack E2 is a complete stack which has just been lowered onto two conveyor belts C1.
  • a battery E3 is being evacuated on two bands C2.
  • the intermediate grid 45 is shown in solid lines in a first position where it is located completely outside the top of the stack E1. Until this moment, the leaves F have therefore fallen onto the pile E2. At the moment when the intermediate grid 45 is advanced into position 45 ′ (in broken lines), a new stack E1 is provisionally formed on it.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Packaging Of Special Articles (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Making Paper Articles (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Forming Counted Batches (AREA)
  • Secondary Cells (AREA)
  • Discharge By Other Means (AREA)

Abstract

A device having a movable grid mounted on a movable carriage to temporarily intercept sheets being deposited from a machine for processing the sheets being discharged into a pile from a machine for processing the sheets includes an arrangement of a planetary system comprising a pinion movable in a circular arc coacting with a rim gear rigidly mounted on a frame and an arrangement for connecting the pinion to the carriage so that as the pinion rotates in the circular arc, the carriage is shifted between a retracted position and a second position for intercepting the sheets being deposited in pile. The device is particularly useful in a delivery station for a machine for die cutting package blanks in sheets of material.

Description

La présente invention concerne un dispositif qui, dans une machine de travail d'éléments en forme de plaque ou feuilles, tel que découpage, refoulage et/ou impression en vue de la production d'emballages, permet, lors d'une formation d'une pile de feuilles, d'intercepter et de recevoir provisoirement les feuilles, alors qu'elles sont déposées une à une sur le haut de la pile. Un tel dispositif comprend les caractéristiques définies dans le préambule de la revendication 1.The present invention relates to a device which, in a machine for working elements in the form of plates or sheets, such as cutting, upsetting and / or printing for the production of packaging, allows, during a formation of a stack of sheets, to temporarily intercept and receive the sheets, while they are deposited one by one on the top of the stack. Such a device comprises the characteristics defined in the preamble of claim 1.

Un tel dispositif peut être utilisé, par exemple, comme représenté à la figure 1 du dessin annexé, dans une station dite de réception des feuilles et située à la sortie ou à la suite d'une presse de découpage. Dans cette station, les feuilles F, qui sortent une a une de la presse P₁, sont transportées par des barres à pinces B₁ montées sur un train de chaînes C₃, et déposées successivement l'une sur l'autre pour former une pile E₁. Quand la pile est complète, il est connu d'intercaler très rapidement, c'est-à-dire durant le temps très court qui s'écoule entre la dernière feuille déposée sur le haut de la pile et la suivante, une grille intercalaire 45 qui va couvrir le haut de la pile et sur laquelle une nouvelle pile peut provisoirement débuter. Pendant ce temps, la pile complète peut être évacuée hors de la station de réception. Pour la formation de la pile, la station est équipée d'un porte-pile muni d'une table T₁ sous forme de grille mobile verticalement. En vue de la réception des feuilles (ou flancs, dans le cas où la station de réception est associée à l'opération de séparation des poses qui consiste à briser les points d'attache qui maintienent entre elles les différentes poses d'une même feuille à la sortie de la presse de découpage), la table T₁ qui, en début de formation de pile, se trouve plus bas que la feuille F qui arrive de la presse, s'abaisse ensuite, au fur et à mesure que la hauteur de la pile E₁ augmente, de manière à maintenir son sommet à hauteur constante. Pour faciliter l'évacuation de la pile, la table mobile T₁ est montée sur l'extrémité supérieure d'un montant vertical M₁ situé entre deux bandes transporteuses C₁; une fois que la pile est complète, il suffit d'abaisser suffisamment le montant vertical M₁ pour que la feuille inférieure de la pile complète E₂ puisse prendre appui, au travers des ouvertures de la grille formant la table mobile T₁, sur les deux bandes transporteuses C₁ qui vont la transporter hors de la station. Une fois la pile E₂ évacuée, la grille ou table T₁ est à nouveau déplacée vers le haut au contact de la nouvelle pile E₁ provisoirement formée et prenant appui sur la grille intercalée 45. Pour pouvoir substituer à l'effet d'appui de la grille intercalaire 45 celui de la table T₁, il est connu de prévoir que les éléments de grille de cette dernière T₁ peuvent faire saillie par dessus la grille au travers d'ouvertures correspondantes (comme représenté 45 en traits discontinus T'₁). En réalité, la grille intercalaire 45 peut être comparée à une fourche entre les dents de laquelle les éléments d'appui de la table T₁ font saillie et qui, une fois libérée du poids de la nouvelle pile, peut être aisément retirée du dessous de la pile, ceci dans le sens des dents pour permettre, entre leurs extrémités libres, l'échappement des éléments d'appui de la table T₁ par rapport à la fourche ou grille intercalaire 45. Il est à remarquer que toutes les opérations mentionnées ci-dessus peuvent être effectuées sans arrêter la machine.Such a device can be used, for example, as shown in Figure 1 of the accompanying drawing, in a so-called sheet reception station and located at the outlet or following a cutting press. In this station, the sheets F, which come out one by one from the press P₁, are transported by gripper bars B₁ mounted on a chain of chains C₃, and successively deposited one on the other to form a stack E₁. When the stack is complete, it is known to insert very quickly, that is to say during the very short time which elapses between the last sheet deposited on the top of the stack and the next, an intermediate grid 45 which will cover the top of the stack and on which a new stack can temporarily start. During this time, the entire stack can be removed from the receiving station. For the formation of the battery, the station is equipped with a battery holder provided with a table T₁ in the form of a vertically movable grid. In view of the reception of the sheets (or sides, in the case where the reception station is associated with the separation operation of the poses which consists in breaking the attachment points which hold together the different poses of the same sheet the output of the cutting press), the table T₁ which, at the start of stack formation, is lower than the sheet F which arrives from the press, then lowers, as the height of the stack E₁ increases, so as to maintain its top at constant height. To facilitate the evacuation of the battery, the movable table T₁ is mounted on the upper end of a vertical upright M₁ located between two conveyor belts C₁; once the stack is complete, it suffices to lower the vertical upright M₁ enough so that the bottom sheet of the complete stack E₂ can bear, through the openings of the grid forming the movable table T₁, on the two conveyor belts Who will transport her out of the station. Once the E₂ stack has been removed, the grid or table T₁ is again moved upwards in contact with the new temporarily formed E₁ stack resting on the interposed grid 45. To be able to substitute for the support effect of the grid insert 45 that of the table T₁ , it is known to provide that the grid elements of the latter T₁ can project above the grid through corresponding openings (as shown 45 in broken lines T'₁). In reality, the intermediate grid 45 can be compared to a fork between the teeth from which the support elements of the table T₁ protrude and which, once released from the weight of the new stack, can be easily removed from the bottom of the stack, this in the direction of the teeth to allow, between their free ends, the escape of the support elements of the table T₁ relative to the fork or intermediate grid 45. It should be noted that all the above operations can be performed without stopping the machine.

Les brevets CH-A-359593 et DE-A-1611776 décrivent aussi un tel dispositif destiné à intercepter des feuilles en cours de distribution sur le haut d'une pile. Ici, à la grille intercalaire solide est substituée un écran souple déroulable par dessus la pile et sur lequel peut provisoirement prendre appui la nouvelle pile. Une fois la pile complète évacuée, l'écran souple est enroulable dans l'autre sens afin d'être retiré du dessous de la nouvelle pile pour qu'elle puisse prendre appui, par exemple, sur une table mobile verticalement, telle que décrite ci-dessus.The patents CH-A-359593 and DE-A-1611776 also describe such a device intended to intercept sheets being dispensed on the top of a stack. Here, the solid intermediate grid is replaced by a flexible screen that can be rolled out over the stack and on which the new stack can temporarily rest. Once the complete stack has been removed, the flexible screen can be rolled up in the other direction in order to be removed from under the new stack so that it can rest, for example, on a vertically movable table, as described below. -above.

Que ce soit dans le cas de la grille solide ou de l'écran souple, leur déplacement dans un sens ou dans un autre a toujours été jusqu'à ce jour essentiellement réalisé au moyen de chaînes entraînées par un moteur. Toutefois, étant donnée la course relativement grande à effectuer qui peut aller jusqu'à 1200mm et les cadences actuelles élevées de production qui peuvent exiger, pour la grille ou l'écran, des vitesses maximales de déplacement de 6m/sec, la commande de tels moyens à chaînes pour des mouvements alternés dans un sens et dans l'autre est difficile, source d'ennuis par rupture de chaînes, et imprécise puisqu'il est difficile de maîtriser les points d'arrêt ou d'inversion.Whether in the case of the solid grid or the flexible screen, their displacement in one direction or another has always been to date essentially carried out by means of chains driven by a motor. However, given the relatively large stroke to be carried out which can go up to 1200mm and the current high production rates which may require, for the grid or the screen, maximum displacement speeds of 6m / sec, the control of such chain means for alternating movements in one direction and the other is difficult, a source of trouble by breaking chains, and imprecise since it is difficult to control stopping or reversing points.

La présente invention a pour but d'éliminer les inconvénients mentionnés ci-dessus. Ce but est atteint grâce à un dispositif selon la revendication 1.The object of the present invention is to eliminate the drawbacks mentioned above. This object is achieved by a device according to claim 1.

D'autres caractéristiques et avantages de l'invention vont maintenant ressortir d'un mode de réalisation de l'invention décrit en référence au dessin annexé dans lequel :

  • la figure 1 est une vue de dessus d'un dispositif selon l'invention;
  • la figure 2 est une vue de côté en coupe selon A - A de la figure 1; et
  • la figure 3 est une vue de côté en coupe partielle d'une station de réception de feuilles, située à la suite d'une presse de découpage.
Other characteristics and advantages of the invention will now emerge from an embodiment of the invention described with reference to the appended drawing in which:
  • Figure 1 is a top view of a device according to the invention;
  • Figure 2 is a side sectional view along A - A of Figure 1; and
  • Figure 3 is a side view in partial section of a sheet receiving station, located after a cutting press.

Le dispositif d'interception des feuilles comprend un cadre rectangulaire horizontal fixe C constitué de deux plaques latérales 10, 10', d'une plaque transversale 11a et de profilés transversaux 11b-11h. Les plaques 10, 10', 11a et les profilés 11b-11h sont assemblés entre eux à leurs extrémités au moyen de vis 12. Si, dans la figure 1, on considère que les feuilles arrivent d'une station antérieure située à droite, par exemple d'une station d'éjection de déchets d'une machine de découpage, les dimensions du cadre C sont suffisamment grandes pour que les deux plaques latérales 10, 10' se trouvent chacune d'un côté de la pile à former. A ses quatre extrémités, le cadre C est muni d'équerres 14 de fixation au bâti B de la machine. A l'intérieur de l'extrémité gauche du cadre C, c'est-à-dire l'extrémité éloignée de la pile, est montée horizontalement une grande couronne à denture intérieure 20. La couronne 20 est fixée, à l'aide de vis 15, à la face inférieure des profilés transversaux 11b-11h. Pour des raisons de construction, des entretoises 16 sont interposées entre des profilés 11b, 11g, 11f et la couronne 20. Un pignon mobile 30, dont le nombre de dents est égal à la moitié de celui de la couronne 20, est monté à l'intérieur et en prise avec les dents de cette dernière. Le pignon 30 est monté en rotation libre sur un tourillon 31 fixé sur la première extrémité d'un levier horizontal 32 dont l'autre extrémité est fixée sur un arbre vertical de sortie R₁ d'un réducteur R accouplé à un moteur M. L'ensemble constitué par le réducteur R et le moteur M est fixé, au moyen de vis 33, sur une plaque 34 (non représentée dans la figure 1 pour en faciliter la compréhension) soudée à la face inférieure de deux profilés transversaux 11g, 11f.The sheet interception device comprises a fixed horizontal rectangular frame C consisting of two side plates 10, 10 ', a transverse plate 11a and transverse profiles 11b-11h. The plates 10, 10 ', 11a and the sections 11b-11h are joined together at their ends by means of screws 12. If, in FIG. 1, it is considered that the sheets arrive from an earlier station situated on the right, by example of a waste ejection station of a cutting machine, the dimensions of the frame C are large enough that the two side plates 10, 10 'are each on one side of the stack to be formed. At its four ends, the frame C is provided with brackets 14 for fixing to the frame B of the machine. Inside the left end of the frame C, that is to say the far end of the stack, is mounted horizontally a large crown with internal toothing 20. The crown 20 is fixed, using screw 15, on the underside of the transverse sections 11b-11h. For reasons of construction, spacers 16 are interposed between sections 11b, 11g, 11f and the crown 20. A movable pinion 30, the number of teeth of which is equal to half that of the crown 20, is mounted inside and in taken with the teeth of the latter. The pinion 30 is mounted in free rotation on a pin 31 fixed on the first end of a horizontal lever 32 whose other end is fixed on a vertical output shaft R₁ of a reduction gear R coupled to a motor M. L ' assembly constituted by the reducer R and the motor M is fixed, by means of screws 33, to a plate 34 (not shown in Figure 1 to facilitate understanding) welded to the underside of two transverse sections 11g, 11f.

Au-dessous de la couronne 20 se trouve un chariot 40 mobile horizontalement dans le sens gauche-droite et inversément. Le chariot 40 est constitué d'un profilé transversal 41 muni à chacune de ses extrémités d'une barre horizontale 42, respectivement 42', s'étendant parallèlement aux plaques latérales correspondantes 10, 10'. Chaque barre 42, 42' est munie de deux galets 48, 48' en prise avec une rainure de guidage formée par deux barres 43, respectivement 43', prévues sur chaque plaque latérale 10, 10'. Sur le profilé 41 sont montés plusieurs profilés en U 45. Les profilés sont fixés par une seule extrémité sur le profilé 41 de manière à ce qu'ensemble ils présentent un support sous la forme d'une fourche (comme mentionné plus haut) destiné à être déplacé par dessus la pile complète pour intercepter et recevoir provisoirement les feuilles.Below the crown 20 is a carriage 40 movable horizontally in the left-right direction and vice versa. The carriage 40 consists of a transverse section 41 provided at each of its ends with a horizontal bar 42, respectively 42 ', extending parallel to the corresponding side plates 10, 10'. Each bar 42, 42 'is provided with two rollers 48, 48' engaged with a guide groove formed by two bars 43, respectively 43 ', provided on each side plate 10, 10'. Several U-shaped profiles 45 are mounted on the profile 41. The profiles are fixed at one end to the profile 41 so that together they have a support in the form of a fork (as mentioned above) intended to be moved over the entire stack to temporarily intercept and receive the sheets.

Sur le milieu du profilé transversal 41 est monté en rotation libre, à l'aide d'un palier 47, un tourillon vertical 44 dont l'extrémité supérieure est en prise avec un bloc de fixation 35 fixé sur la face inférieure du pignon 30. La figure 1 montre l'instant où le chariot 40 se trouve en fin de course à l'extrémité gauche, soit à l'instant où les profilés en U 45 sont totalement hors du dessus de la pile, c'est-à-dire ne sont pas en état d'intercepter les feuilles. A cet instant, les deux tourillons 44, 31 et l'axe de rotation de l'arbre vertical R₁ du pignon 30 se trouvent sur une seule et même ligne droite, à savoir sur l'axe central O₁ de la machine, l'axe du tourillon 44 se trouvant sur le point de tangence du pignon 30 par rapport à la couronne 20. Lorsque le levier 32 est entraîné en rotation, par exemple dans le sens des aiguilles d'une montre, par l'arbre R₁ entraîné par le moteur M, la réaction de la couronne 20 fixe sur le pignon 30 mobile force ce dernier à tourner dans le sens inverse des aiguilles d'une montre. Etant donné que le diamètre du pignon 30 est égal à la moitié de celui de la couronne 20, le tourillon 44 va se déplacer sur la droite en suivant l'axe central O₁ et en entraînant aussi avec lui le chariot 40 dont le guidage est assuré par les galets 48, 48' et les guidages 43, 43'. La fin de course vers la droite du chariot 40 a lieu lorsque le point de tangence entre le pignon 30 et la couronne 20 se trouve à nouveau sur l'axe central O₁ mais sur le côté droite de la couronne 20. Cet instant correspond donc à l'instant où les profilés en U 45 sont avancés au maximum par dessus la pile et prêts à intercepter et recevoir provisoirement les feuilles.On the middle of the transverse section 41 is mounted in free rotation, using a bearing 47, a vertical pin 44 whose upper end is in engagement with a fixing block 35 fixed on the underside of the pinion 30. FIG. 1 shows the instant when the carriage 40 is at the end of its travel at the left end, ie at the moment when the U-shaped profiles 45 are completely out of the top of the stack, i.e. are not in a condition to intercept the sheets. At this instant, the two pins 44, 31 and the axis of rotation of the vertical shaft R₁ of the pinion 30 are on a single straight line, namely on the central axis O₁ of the machine, the axis the pin 44 located on the point of tangency of the pinion 30 relative to the crown 20. When the lever 32 is rotated, for example clockwise, by the shaft R₁ driven by the motor M, the reaction of the crown 20 fixed on the movable pinion 30 forces the latter to rotate in an anticlockwise direction. Since the diameter of the pinion 30 is equal to half that of the crown 20, the pin 44 will move to the right along the central axis O₁ and also carrying with it the carriage 40 whose guidance is ensured by the rollers 48, 48 'and the guides 43, 43'. The end of travel to the right of the carriage 40 takes place when the point of tangency between the pinion 30 and the crown 20 is again on the central axis O₁ but on the right side of the crown 20. This instant therefore corresponds to the moment when the U 45 profiles are advanced as far as possible over the stack and ready to intercept and temporarily receive the sheets.

A cet instant, le moteur M est arrêté, et la pile complète E₂ située au-dessous des profilés 45 est évacuée, c'est-à-dire ôtée de la table mobile T₁ du porte-pile mentionnée plus haut. La table T₁ est ensuite déplacée vers le haut jusqu'à ce que ses éléments d'appui (aussi mentionnés plus haut) fassent saillie, entre et par dessus les profilés en U 45 de manière à libérer ces derniers de la pile E₁ provisoirement formée sur eux. Ensuite, le moteur M est remis en marche pour ramener le chariot 40 sur la gauche, c'est-à-dire ramener ledit point de tangence au point de départ, c'est-à-dire sur le côté gauche de la couronne 20 de manière que les profilés en U ne puissent plus intercepter les feuilles.At this instant, the motor M is stopped, and the complete stack E₂ situated below the profiles 45 is evacuated, that is to say removed from the movable table T₁ of the battery holder mentioned above. The table T₁ is then moved upwards until its support elements (also mentioned above) protrude, between and over the U-shaped profiles 45 so as to release the latter from the pile E₁ temporarily formed on them. Then, the motor M is restarted to bring the carriage 40 to the left, that is to say to bring said point of tangency to the starting point, that is to say to the left side of the crown 20 so that the U-profiles can no longer intercept the sheets.

Il est évident que, pour réduire les inerties de masse, tous les profilés 41, 45 constituant le chariot 40 sont en matériau léger, par exemple, en alliage d'aluminium.It is obvious that, in order to reduce the mass inertias, all the sections 41, 45 constituting the carriage 40 are made of light material, for example, of aluminum alloy.

La figure 3 montre de quelle manière le cadre C du dispositif est disposé au-dessous de l'endroit de renvoi d'un train de chaînes C₃ sur lequel sont montées des barres à pinces B₁ en prise avec le bord frontal des feuilles. Les feuilles F sont amenées, à partir d'une presse de découpage P₁, au-dessus de l'endroit où une pile E₁ (ou E₂) est en cours de formation. La pile E₂ est une pile complète qui vient d'être descendue sur deux bandes transporteuses C₁. Une pile E₃ est en cours d'évacuation sur deux bandes C₂. La grille intercalaire 45 est représentée en traits continus dans une première position où elle est située complètement hors du dessus de la pile E₁. Jusqu'à cet instant, les feuilles F sont donc tombées sur la pile E₂. A l'instant où la grille intercalaire 45 est avancée dans la position 45' (en traits discontinus), une nouvelle pile E₁ est provisoirement formée sur elle. Quand la pile E₂ a été transportée par les bandes C₁ sur les bandes C₂, c'est-à-dire hors de la table T₁, celle-ci peut être transportée vers le haut à la position T' (en traits discontinus) de manière à émerger légèrement au-dessus de la grille intercalaire 45' pour reprendre le poids de la pile E₁. A cet instant, la grille intercalaire peut être ramenée à la position 45. Ensuite, la table T₁ va être progressivement abaissée au fur et à mesure que l'épaisseur de la pile E₁ augmente, pour que son sommet soit toujours maintenu à hauteur constante.Figure 3 shows how the frame C of the device is arranged below the return location of a chain train C₃ on which are clamped bars B₁ engaged with the front edge of the sheets. The sheets F are brought, from a cutting press P₁, above the place where a stack E₁ (or E₂) is being formed. The stack E₂ is a complete stack which has just been lowered onto two conveyor belts C₁. A battery E₃ is being evacuated on two bands C₂. The intermediate grid 45 is shown in solid lines in a first position where it is located completely outside the top of the stack E₁. Until this moment, the leaves F have therefore fallen onto the pile E₂. At the moment when the intermediate grid 45 is advanced into position 45 ′ (in broken lines), a new stack E₁ is provisionally formed on it. When the stack E₂ has been transported by the bands C₁ on the bands C₂, that is to say outside the table T₁, this can be transported upwards to the position T '(in broken lines) so as to emerge slightly at above the intermediate grid 45 'to take up the weight of the stack E₁. At this time, the intermediate grid can be brought back to position 45. Then, the table T₁ will be gradually lowered as the thickness of the stack E₁ increases, so that its top is always kept at constant height.

Le dispositif décrit ci-dessus présente donc les avantages suivants :

  • pas de transmission par chaînes;
  • grande précision dans le positionnement en fin de course du chariot 40; en effet, même une légère erreur angulaire dans le positionnement du pignon 30 lors des deux positions extrêmes de la course du chariot 40, c'est-à-dire à l'instant où le point de tangence du pignon 30 avec la couronne 20 doit se trouver sur l'axe central O₁, n'entraîne qu'une infime erreur linéaire de positionnement du chariot 40;
  • grande simplicité de construction pour un fonctionnement rapide et sûr.
The device described above therefore has the following advantages:
  • no chain transmission;
  • high accuracy in positioning the end of travel of the carriage 40; indeed, even a slight angular error in the positioning of the pinion 30 during the two extreme positions of the stroke of the carriage 40, that is to say at the moment when the point of tangency of the pinion 30 with the crown 20 must being on the central axis O₁, causes only a tiny linear positioning error of the carriage 40;
  • great simplicity of construction for fast and safe operation.

Claims (8)

Dispositif pour machine de travail d'éléments en forme de plaque ou feuilles, tel que découpage, refoulage, impression, en vue de la production d'emballages, permettant, lors d'une formation d'une pile de feuilles, d'intercepter et de recevoir provisoirement les feuilles à l'instant où elles sont disposées une à une par le haut de la pile, en vue d'autoriser l'évacuation de la pile complète, et comprenant une partie fixe (C) montée sur le bâti (B) de la machine et une partie mobile (40) munie d'un support (41, 45) en forme de fourche et pouvant occuper une première position dans laquelle le support (41, 45) se trouve sur un côté de la pile en formation, et une deuxième position dans laquelle le support (41, 45) se trouve au-dessus de la pile en vue d'intercepter les feuilles, des moyens de déplacement de la partie mobile (40) de ladite première à ladite deuxième position, et des moyens de guidage (43, 48) de la partie mobile (40) par rapport à la partie fixe (C), caractérisé en ce que lesdits moyens de déplacement comprennent : - une couronne (20) horizontale à denture intérieure, montée sur la partie fixe (C); - un pignon mobile (30) dont la denture est en prise constante avec celle de la couronne (20) et dont le nombre de dents est égal à la moitié de celui de la couronne (20); - des moyens (32, R, M) de déplacement du pignon (30) de manière que son axe (31) décrive un arc circulaire centré sur l'axe de la couronne (20); et - des moyens de liaison (47, 44, 35) entre le pignon (30) et la partie mobile (40) de manière à ce que, lorsque le pignon (30) est déplacé selon ledit arc circulaire, il provoque le déplacement de la partie mobile (40) de ladite première à ladite deuxième position. Device for working with plate or sheet-like elements, such as cutting, upsetting, printing, for the production of packaging, making it possible, during the formation of a stack of sheets, to intercept and to temporarily receive the sheets at the time when they are arranged one by one from the top of the pile, in order to allow the evacuation of the complete pile, and comprising a fixed part (C) mounted on the frame (B ) of the machine and a movable part (40) provided with a support (41, 45) in the form of a fork and able to occupy a first position in which the support (41, 45) is located on one side of the stack being formed , and a second position in which the support (41, 45) is located above the stack in order to intercept the sheets, means for moving the movable part (40) from said first to said second position, and guide means (43, 48) of the movable part (40) relative to the fixed part (C), ca characterized in that said displacement means comprise: - a horizontal crown (20) with internal toothing, mounted on the fixed part (C); - A movable pinion (30) whose teeth are in constant engagement with that of the crown (20) and whose number of teeth is equal to half that of the crown (20); - Means (32, R, M) for moving the pinion (30) so that its axis (31) describes a circular arc centered on the axis of the crown (20); and - connecting means (47, 44, 35) between the pinion (30) and the movable part (40) so that that, when the pinion (30) is moved along said circular arc, it causes the moving part (40) to move from said first to said second position. Dispositif selon la revendication 1, caractérisé en ce que lesdits moyens de déplacement du pignon (30) comprennent un levier horizontal (32) sur une première extrémité duquel est monté en rotation libre le pignon (30), l'autre extrémité étant fixée sur un arbre vertical (R₁) centré sur l'axe de la couronne (20) et des moyens (R, M) d'entraînement en rotation dudit arbre vertical (R₁) de manière à ce que l'axe (31) du pignon (30) décrive ledit arc de cercle.Device according to claim 1, characterized in that said means for moving the pinion (30) comprise a horizontal lever (32) on a first end of which the pinion (30) is mounted in free rotation, the other end being fixed on a vertical shaft (R₁) centered on the axis of the crown (20) and means (R, M) for rotating said vertical shaft (R₁) so that the axis (31) of the pinion (30 ) describes said arc. Dispositif selon la revendication 2, caractérisé en ce que ledit arbre vertical (R₁) est l'arbre de sortie d'un réducteur accouplé à un moteur (M).Device according to claim 2, characterized in that said vertical shaft (R₁) is the output shaft of a reduction gear coupled to a motor (M). Dispositif selon la revendication 3, dans lequel ledit déplacement de la partie mobile (40) s'effectue dans une direction parallèle à celle de l'arrière des feuilles sur la pile, c'est-à-dire selon l'axe central (O₁) de la machine, caractérisé en ce que l'axe de la couronne (20) se trouve sur ledit axe central (O₁) et lesdites première et deuxième positions de la partie mobile (40) sont déterminées par les deux positions du pignon (30) dans lesquelles son point de tangence avec la couronne (20) se trouve aussi sur ledit axe central (O₁).Device according to claim 3, in which said displacement of the movable part (40) takes place in a direction parallel to that of the rear of the sheets on the stack, that is to say along the central axis (O₁ ) of the machine, characterized in that the axis of the crown (20) is on said central axis (O₁) and said first and second positions of the movable part (40) are determined by the two positions of the pinion (30 ) in which its point of tangency with the crown (20) is also on said central axis (O₁). Dispositif selon la revendication 4, caractérisé en ce que : - la partiè fixe est constituée d'un cadre rectangulaire (C) situé du côté de la pile opposé à celui d'arrivée des feuilles et formé de traverses latérales (10, 10') et transversales (11a, 11b), la couronne (20) étant située du côté du cadre (C) le plus éloigné de la pile de manière que lesdites première et deuxième positions de la partie mobile (40) correspondent à celles la plus éloignée, respectivement la plus proche, du pignon (30) par rapport à la pile. Device according to claim 4, characterized in that: - the fixed part consists of a rectangular frame (C) located on the side of the stack opposite that of the arrival of the sheets and formed of lateral (10, 10 ') and transverse (11a, 11b) crosspieces, the crown ( 20) being located on the side of the frame (C) the further from the stack so that said first and second positions of the movable part (40) correspond to those farthest, respectively closest, from the pinion (30) relative to the stack. Dispositif selon l'une des revendications précédentes, caractérisé en ce que ledit support en forme de fourche de la partie mobile (40) est constitué d'une traverse transversale (41) munie desdits moyens de liaison (47) en prise avec des moyens correspondants (44, 35) prévus sur le pignon (30), et de plusieurs profilés (45) horizontaux fixés par une extrémité à ladite traverse transversale (41) et s'étendant, essentiellement parallèlement à l'axe central (O₁) de la machine, en direction de la pile.Device according to one of the preceding claims, characterized in that said fork-shaped support of the movable part (40) consists of a transverse crosspiece (41) provided with said connecting means (47) engaged with corresponding means (44, 35) provided on the pinion (30), and of several horizontal profiles (45) fixed by one end to said transverse crosspiece (41) and extending, essentially parallel to the central axis (O₁) of the machine , towards the pile. Dispositif selon la revendication 6, caractérisé en ce que lesdits moyens de guidage comprennent des galets (48, 48') montés sur des supports latéraux (42, 42') fixés à chaque extrémité de la traverse (41) formant la partie mobile (40), ces galets (48, 48') étant en prise avec des guidages correspondants (43, 43') prévus sur le cadre fixe (C).Device according to claim 6, characterized in that said guide means comprise rollers (48, 48 ') mounted on lateral supports (42, 42') fixed to each end of the crosspiece (41) forming the movable part (40 ), these rollers (48, 48 ') being engaged with corresponding guides (43, 43') provided on the fixed frame (C). Dispositif selon la revendication 7, caractérisé en ce que les profilés horizontaux (45) sont des profilés en U en alliage d'aluminium.Device according to claim 7, characterized in that the horizontal sections (45) are U-shaped sections of aluminum alloy.
EP91106310A 1990-04-26 1991-04-19 Device for interception of sheets set down on top of a pile in a package forming machine Expired - Lifetime EP0453983B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1420/90 1990-04-26
CH1420/90A CH682995A5 (en) 1990-04-26 1990-04-26 Device intercepting sheets deposited on top of a stack in a machine for producing packaging.

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EP0453983A1 true EP0453983A1 (en) 1991-10-30
EP0453983B1 EP0453983B1 (en) 1994-06-01

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US (1) US5244342A (en)
EP (1) EP0453983B1 (en)
JP (2) JPH04223967A (en)
AT (1) ATE106357T1 (en)
CA (1) CA2041220C (en)
CH (1) CH682995A5 (en)
DE (1) DE69102196T2 (en)
DK (1) DK0453983T3 (en)
ES (1) ES2054393T3 (en)

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EP0768261A1 (en) * 1995-10-12 1997-04-16 Solipat Ag Device and method for continuous zig-zag folding and stacking of web-shaped goods
EP0798253A1 (en) * 1996-03-28 1997-10-01 Heidelberger Druckmaschinen Aktiengesellschaft Delivery system for flat products
CZ297110B6 (en) * 2000-09-14 2006-09-13 Heidelberger Druckmaschinen Aktiengesellschaft Delivery apparatus for a machine processing flat printed materials

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US5888599A (en) * 1993-04-19 1999-03-30 E. I. Du Pont De Nemours And Company Multi-layer lidding film having improved heat seal properties and methods relating thereto
US6053695A (en) * 1997-12-02 2000-04-25 Ite, Inc. Tortilla counter-stacker
BR0002821A (en) * 2000-05-11 2001-12-04 Net 2 Net Empresa Paulista De User interconnection system to the Internet, computers, internet, without using traditional telephone lines or coaxial cable television cables
ITBO20010728A1 (en) * 2001-11-29 2003-05-29 Ima Spa METHOD FOR THE FEEDING OF DIE CUTS TO A CARTONING MACHINE
DE102011000583A1 (en) * 2010-08-16 2012-02-16 Joachim Jakob Non-stop device
CN101934944B (en) * 2010-09-03 2012-09-12 河北玉田兴业印刷机械有限公司 Digital high-speed paper-pile feeding device

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FR1519699A (en) * 1967-02-06 1968-04-05 Transformation: rectilinear movements into rotary movements, rotary movements into rectilinear movements
US4162649A (en) * 1977-05-18 1979-07-31 Wiggins Teape Limited Sheet stack divider
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EP0768261A1 (en) * 1995-10-12 1997-04-16 Solipat Ag Device and method for continuous zig-zag folding and stacking of web-shaped goods
US5820539A (en) * 1995-10-12 1998-10-13 Solipat Ag Device and method for continuous plaiting of web-shaped material
EP0798253A1 (en) * 1996-03-28 1997-10-01 Heidelberger Druckmaschinen Aktiengesellschaft Delivery system for flat products
US6155559A (en) * 1996-03-28 2000-12-05 Heidelberger Druckmaschinen Aktiengesellschaft Delivery system for flat products
CZ297110B6 (en) * 2000-09-14 2006-09-13 Heidelberger Druckmaschinen Aktiengesellschaft Delivery apparatus for a machine processing flat printed materials

Also Published As

Publication number Publication date
EP0453983B1 (en) 1994-06-01
CH682995A5 (en) 1993-12-31
ES2054393T3 (en) 1994-08-01
DE69102196D1 (en) 1994-07-07
DK0453983T3 (en) 1994-10-03
JP2530214Y2 (en) 1997-03-26
ATE106357T1 (en) 1994-06-15
DE69102196T2 (en) 1994-09-29
JPH08647U (en) 1996-04-16
JPH04223967A (en) 1992-08-13
US5244342A (en) 1993-09-14
CA2041220C (en) 1995-01-17

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