EP0087341A2 - Unpiling device for flat articles such as mail - Google Patents

Unpiling device for flat articles such as mail Download PDF

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Publication number
EP0087341A2
EP0087341A2 EP83400247A EP83400247A EP0087341A2 EP 0087341 A2 EP0087341 A2 EP 0087341A2 EP 83400247 A EP83400247 A EP 83400247A EP 83400247 A EP83400247 A EP 83400247A EP 0087341 A2 EP0087341 A2 EP 0087341A2
Authority
EP
European Patent Office
Prior art keywords
objects
unstacking
face
speed
stock
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
EP83400247A
Other languages
German (de)
French (fr)
Other versions
EP0087341B1 (en
EP0087341A3 (en
Inventor
Michel Divoux
Hubert Bonansea
Marcel Ranchon
Louis Sabatier
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.)
Generale D'automatisme Cga Hbs A Cie Ste
Original Assignee
Hotchkiss Brandt Sogeme HBS SA
Compagnie Generale dAutomatisme CGA HBS 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.)
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Publication date
Application filed by Hotchkiss Brandt Sogeme HBS SA, Compagnie Generale dAutomatisme CGA HBS SA filed Critical Hotchkiss Brandt Sogeme HBS SA
Publication of EP0087341A2 publication Critical patent/EP0087341A2/en
Publication of EP0087341A3 publication Critical patent/EP0087341A3/en
Application granted granted Critical
Publication of EP0087341B1 publication Critical patent/EP0087341B1/en
Expired 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
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/02—Supports or magazines for piles from which articles are to be separated adapted to support articles on edge
    • B65H1/025—Supports or magazines for piles from which articles are to be separated adapted to support articles on edge with controlled positively-acting mechanical devices for advancing the pile to present the articles to the separating device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/48—Air blast acting on edges of, or under, articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/21—Angle
    • B65H2511/214—Inclination
    • 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
    • B65H2701/19—Specific article or web
    • B65H2701/1916—Envelopes and articles of mail

Definitions

  • the invention relates to a destacker for flat objects such as mail folds.
  • a postal ply sorting machine supply assembly essentially comprises a supply magazine acting as a buffer stock and as a unit for presentation to a speeding member and intended to speed up unitarily (the one after the other) each fold, finally a conveying device intended to convey the folds individually.
  • the distribution devices making it possible to take one by one and in the order in which they appear the objects of a stack or of a row to send them at constant pitch (as opposed to constant spacing systems) for example in an installation processing only work satisfactorily if the position of the objects at the time of unstacking is determined very precisely.
  • FIGS. 1 to 7 schematically represent the various means used in a destacker according to the invention.
  • FIGS 8, 9 and 10 schematically represent other operating faults that these means make it possible to avoid.
  • FIG. 1 schematically represents the position which has been found to be optimal and which the feet of the objects to be unstacked must take before reaching the unstacking face 2 of a speed-setting member (not shown). They must remain inclined at an angle Or which, for each determined application, must be kept constant until the fold concerned is caught up by the speed setting member.
  • a means 3 capable of ensuring this inclination of the letters prior to unstacking can consist of a set of motorized belts 33 which follows the drive path of the letters a food store located downstream (not shown in the figure) and which may be of the type described in French patent application 2,382,387.
  • the sets of letters are inserted between the pusher members driven in displacement as far as the unstacking member, where they are then retracted.
  • FIG. 3 such a pusher member is shown in 5 just before its retraction.
  • the positioning of the letter feet as defined by means of FIG. 1 is improved, using a blowing system 4 placed at the rear of the letter foot placed immediately after the zone d action of the last pusher member 5.
  • the arrows show the direction of blowing.
  • this same result can also be obtained by means of a pusher member 5 provided with tilting means making it possible to tilt it according to the angle ⁇ defined previously in the vicinity of the unstacking face 2.
  • a photoelectric cell CI is placed in position to detect the presence of the foot 9 of a letter, for example on motorized belts.
  • a new problem arises at this stage of unstacking namely; the separation of the letter 8 supported by the unstacking face 2 and the letter 7 which immediately follows it. This separation is ensured by the suction of the letter 8 against the unstacking face through the orifices 12, and accentuated by means of a blowing ramp 6 placed above the packet of letters brought to the speed setting member. This is a means of selecting the letter 8 pressed against the unstacking face 2 before it is speeded up in view of his training.
  • Such a speed setting member is schematically represented in FIG. 6. It essentially comprises the unstacking face 2 proper comprising suction orifices 12 cooperating with a speed setting drum II. According to the invention, a detection means C2 is placed as close as possible to the speed-setting drum 11. The function of the detection means will be explained in the following description.
  • the thickness of the letter to be speeded up can be entered before precisely this setting in vitese.
  • an image capture head 14 is placed as shown in Figure 7 on the path of the upper part of the letter so as to determine the thickness. The information collected then leads to an adjustment of the training parameters.
  • an operator fills the spaces between the pusher organs of the food store with letters.
  • the store is started.
  • the detection means CI gives positive information.
  • the store is stopped and the set of motorized belts 33 is, or is started, as well as possibly the first blowing means 4.
  • the pusher pushing the pile of ready letters to be unstacked and detected by the detection means C1 can also be put in a tilted back position. This is the instant To.
  • the store is then stopped until the separation and aspiration of the folds by the speed-setting member leads the cell C1 to no longer be obscured.
  • the letter is therefore in an inclined position, it is not pressed (pressed) by the feed magazine against the unstacking face.
  • To + Tl the starting of the vacuum box acting on the suction orifices 12 is started; this has the effect of pressing the first letter appearing at the unstacking against the unstacking face 2.
  • the second detection means C2 detects the plating of this first letter of the pile of letters which presents itself. It's time To + Tx.
  • the second upper blowing means 6 are then started at time To + T2. They have, as has been said previously, the function of allowing the plating on the unstacking face only of the single letter which must be put in speed. This instant may or may not coincide with the time To + Tx.
  • Regulatory actions can therefore relate to the level and frequency of pulsations of the upper air jets, the timing of the commissioning of the general letter supply and the speed of rotation of the conveyor belt of the letter feet against the unstacking face, the intensity of the depression of the speeding drum.
  • a destacker according to the invention thanks to the combination of means which characterizes it leads to maximum output at a determined rate. It makes it possible to reduce the double setting rate and even makes it tend towards zero, which is a fundamental constraint for this type of application. By limiting desynchronization, it dispenses with the use of an additional device at the entrance to the machine.
  • Cadence is understood to mean the number of folds set in speed in the conveying device per unit of time.
  • the unstacking performance corresponds to the number of folds correctly introduced into the conveying device, that is to say presenting itself in a unitary manner with a correct trim and a synchronization as desired, relative to the number of theoretical folds likely to be speeded up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Sorting Of Articles (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

1. An unstacker device for unstacking flat objects (1) ensuring the link between a feed magazine acting as buffer stock and having drive means (5) for driving the stock of objects, and a conveyor device conveying the objects one by one, the unstacking device comprising at the end of the magazine an unstacking face (2) including suction means (12) and accelerating means (11) for accelerating one by one the objects leaving the magazine in order to be introduced into the conveyor device, and comprising means (3, 4, 5) for inclining the objects with the lower part forwards in front of the unstacking face, characterized in that said drive means (5) for driving the feed magazine are mounted in such a way that they ensure the movement of the stock of objects up to a position close to the unstacking face (2) and that the inclination means (3, 4, 5) only act on the terminal objects of the stock located close to the unstacking face (2) by ensuring the application of the foot of the terminal object against the unstacking face without any pressure being exerted by the stock of the magazine, and that it further comprises blowing means (6) located above the unstacking face (2) and directed in such a way that their effect is opposed to the application of the objects against the unstacking face, further comprising first detection means (C1) for detecting the presence of objects, these means being mounted close to said unstacking face and controlling the stop of the drive means (5) for driving the stock of objects in the magazine and releasing the suction means (12) of the unstacking face (2) as long as objects are detected there, and second detection means (C2) for detecting an object applied against the unstacking face (2), these means being mounted close to the accelerating means (11) which act on the blowing means (6) for retaining the objects which follow the object applied against the unstacking face as long as an object is still detected as being applied against this face.

Description

L'invention concerne un dépileur d'objets plats tels que des plis postaux.The invention relates to a destacker for flat objects such as mail folds.

Un ensemble d'alimentation de machine de tri de plis postaux comporte essentiellement un magasin d'alimentation jouant le rôle de stock tampon et d'unité de présentation à un organe de mise en vitesse et destinée à mettre en vitesse de manière unitaire (l'un après l'autre) chaque pli, enfin un dispositif de convoyage destiné à acheminer les plis unitairement.A postal ply sorting machine supply assembly essentially comprises a supply magazine acting as a buffer stock and as a unit for presentation to a speeding member and intended to speed up unitarily (the one after the other) each fold, finally a conveying device intended to convey the folds individually.

Il s'avère que, face à certaines contraintes telles qu'un élargissement important du spectre des caractéristiques des plis à traiter (au-delà des normes en usage), les dispositifs de types connus sont impropres à répondre intégralement aux objectifs de performances demandés. Parmi les contraintes prépondérantes à prendre en compte dans l'élargissement du spectre, on peut par exemple citer :

  • - le traitement de lots de plis de poids très différents (de très léger, inférieur à deux grammes, à très lourd, pour des plis postaux supérieurs à soixante grammes ;
  • - le traitement de plis postaux très poreux ; ou glacés
  • - le traitement de plis postaux aux caractéristiques géométriques altérées par le procédé de fabrication du pli lui-même (par exemple : simple feuille pliée en deux ou trois avec un scellement local) ;
  • - le traitement de plis postaux se présentant en série non normées.
It turns out that, faced with certain constraints such as a significant widening of the spectrum of the characteristics of the plies to be treated (beyond the standards in use), the devices of known types are unsuitable for fully meeting the required performance objectives. Among the preponderant constraints to be taken into account in the widening of the spectrum, one can for example quote:
  • - the treatment of lots of folds of very different weights (from very light, less than two grams, to very heavy, for postal folds greater than sixty grams;
  • - treatment of very porous postal envelopes; or frozen
  • - the processing of postal envelopes with geometric characteristics altered by the manufacturing process of the envelope itself (for example: simple sheet folded in two or three with a local seal);
  • - the treatment of postal folds presenting themselves in non-standard series.

Face à ces nouvelles contraintes, les dispositifs connus précédemment cités conduisent parfois à un niveau de performances insuffisant.Faced with these new constraints, the previously mentioned known devices sometimes lead to an insufficient level of performance.

En effet, les dispositifs de distribution permettant de prélever un à un et dans l'ordre où ils se présentent les objets d'une pile ou d'une rangée pour les envoyer a pas constant (par opposition aux systèmes à espacement constant) par exemple dans une installation de traitement n'ont un fonctionnement satisfaisant que si la position des objets au moment du dépilage est déterminée de façon très précise.In fact, the distribution devices making it possible to take one by one and in the order in which they appear the objects of a stack or of a row to send them at constant pitch (as opposed to constant spacing systems) for example in an installation processing only work satisfactorily if the position of the objects at the time of unstacking is determined very precisely.

C'est là précisément le but de l'invention. Elle concerne plus particulièrement un organe dépileur d'objets plats destiné à assurer la liaison entre un magasin d'alimentation jouant le rôle de stock tampon et d'unité de présentation et un organe de mise en vitesse destiné à mettre en vitesse l'un après l'autre chaque objet pour son introduction dans un dispositif de convoyage destiné à acheminer les objets unitairement, comportant des moyens de contrôle capables d'imposer aux objets arrivant du magasin d'alimentation une inclinaison selon un angle α vers l'arrière par rapport à la direction du magasin déterminant ainsi pour chaque objet un angle d'inclinaison maintenu constant jusqu'à sa prise en charge individuellement par une face de dépilage et comportant en outre des moyens de soufflage capables d'accentuer la séparation entre l'objet pris en charge par l'organe de mise en vitesse et l'objet qui le suit immédiatement, caractérisé en ce que les moyens de soufflage sont disposés au-dessus du chant supérieur des objets pris en charge.This is precisely the aim of the invention. It relates more particularly to a unit for unstacking flat objects intended to ensure the link between a food store acting as a buffer stock and presentation unit and a speed-up member intended to speed up one after the other each object for its introduction into a conveying device intended to convey the unitary objects, comprising control means capable of imposing on the objects arriving from the food store an inclination at an angle α towards the rear relative to the direction of the store thus determining for each object an angle of inclination kept constant until taken over individually by a unstacking face and further comprising blowing means capable of accentuating the separation between the supported object by the speed-setting member and the object which immediately follows it, characterized in that the blowing means are arranged above the upper edge of the objects picked up charge.

L'invention sera mieux comprise à l'aide des explications qui vont suivre et des figures jointes parmi lesquelles les figures 1 à 7 représentent schématiquement les différents moyens mis en oeuvre dans un dépileur conforme à l'invention.The invention will be better understood with the aid of the explanations which follow and from the appended figures among which FIGS. 1 to 7 schematically represent the various means used in a destacker according to the invention.

Les figures 8, 9 et 10 représentent schématiquement d'autres défauts de fonctionnement que ces moyens permettent d'éviter.Figures 8, 9 and 10 schematically represent other operating faults that these means make it possible to avoid.

Pour faciliter la compréhension les mêmes éléments portent les mêmes références dans toutes les figures.To facilitate understanding, the same elements are given the same references in all the figures.

La figure 1 représente schématiquement la position qui s'est avérée optimale et que doivent prendre les pieds des objets à dépiler avant d'atteindre la face de dépilage 2 d'un organe de mise en vitesse (non représenté) . Ils doivent rester inclinés d'un angle Or qui, pour chaque application déterminée, doit être maintenu constant jusqu'à ce que le pli concerné soit happé par l'organe de mise en vitesse.FIG. 1 schematically represents the position which has been found to be optimal and which the feet of the objects to be unstacked must take before reaching the unstacking face 2 of a speed-setting member (not shown). They must remain inclined at an angle Or which, for each determined application, must be kept constant until the fold concerned is caught up by the speed setting member.

Les objets pris comme exemple dans la suite de la description sont des lettres ou plis plats 1.The objects taken as an example in the following description are letters or flat folds 1.

Comme le montre la figure 2, à titre d'exemple non limitatif, un moyen 3 capable d'assurer cette inclinaison des lettres préalablement au dépilage peut être constitué d'un jeu de courroies motorisées 33 qui fait suite au chemin d'entraînement des lettres d'un magasin d'alimentation situé en aval (non représenté sur la figure) et qui peut être du type de celui qui est décrit dans la demande de brevet français 2 382 387.As shown in FIG. 2, by way of nonlimiting example, a means 3 capable of ensuring this inclination of the letters prior to unstacking can consist of a set of motorized belts 33 which follows the drive path of the letters a food store located downstream (not shown in the figure) and which may be of the type described in French patent application 2,382,387.

Dans un tel dispositif, on insère les ensembles de lettres entre les organes pousseurs entraînés en déplacement jusqu'à proximité de l'organe de dépilage, où ils sont alors escamotés.In such a device, the sets of letters are inserted between the pusher members driven in displacement as far as the unstacking member, where they are then retracted.

Sur la figure 3, un tel organe pousseur est représenté en 5 juste avant son escamotage. Conformément à l'invention, on améliore le positionnement des pieds de lettres tels que défini au moyen de la figure 1, à l'aide d'un système de soufflage 4 placé à l'arrière du pied de lettre placé immédiatement après la zone d'action du dernier organe pousseur 5. Les flèches montrent le sens du soufflage.In Figure 3, such a pusher member is shown in 5 just before its retraction. According to the invention, the positioning of the letter feet as defined by means of FIG. 1 is improved, using a blowing system 4 placed at the rear of the letter foot placed immediately after the zone d action of the last pusher member 5. The arrows show the direction of blowing.

Comme le montre la figure 4, ce même résultat peut également être obtenu au moyen d'un organe pousseur 5 muni de moyens d'inclinaison permettant de l'incliner selon l'angle α défini précédemment au voisinage de la face de dépilage 2.As shown in FIG. 4, this same result can also be obtained by means of a pusher member 5 provided with tilting means making it possible to tilt it according to the angle α defined previously in the vicinity of the unstacking face 2.

. Comme le montre la figure 5, une cellule photoélectrique CI est placée en position pour détecter la présence du pied 9 d'une lettre par exemple sur les courroies motorisées.. As shown in FIG. 5, a photoelectric cell CI is placed in position to detect the presence of the foot 9 of a letter, for example on motorized belts.

Un nouveau problème se pose à ce stade du dépilage, à savoir ; la séparation de la lettre 8 prise en charge par la face de dépilage 2 et de la lettre 7 qui la suit immédiatement. Cette séparation est assurée par l'aspiration de la lettre 8 contre la face de dépilage grâce aux orifices 12, et accentuée au moyen d'une rampe de soufflage 6 placée au dessus du paquet de lettres amenées à l'organe de mise en vitesse. Il s'agit là d'un moyen de sélection de la lettre 8 plaquée contre la face de dépilage 2 avant sa mise en vitesse en vue de son entraînement.A new problem arises at this stage of unstacking, namely; the separation of the letter 8 supported by the unstacking face 2 and the letter 7 which immediately follows it. This separation is ensured by the suction of the letter 8 against the unstacking face through the orifices 12, and accentuated by means of a blowing ramp 6 placed above the packet of letters brought to the speed setting member. This is a means of selecting the letter 8 pressed against the unstacking face 2 before it is speeded up in view of his training.

Un tel organe de mise en vitesse est schématiquement représentée sur la figure 6. Elle comporte essentiellement la face de dépilage 2 proprement dite comportant des orifices d'aspiration 12 coopérant avec un tambour Il de mise en vitesse. Conformément à l'invention un moyen de détection C2 est placé le plus près possible du tambour 11 de mise en vitesse. La fonction du moyen de détection sera explicité dans la suite de la description.Such a speed setting member is schematically represented in FIG. 6. It essentially comprises the unstacking face 2 proper comprising suction orifices 12 cooperating with a speed setting drum II. According to the invention, a detection means C2 is placed as close as possible to the speed-setting drum 11. The function of the detection means will be explained in the following description.

Pour améliorer la séparation individuelle de la lettre de tête du lot de plis incliné vers l'arrière, au moment de l'entrée en action de l'aspiration par effacement de la lettre précédente, l'épaisseur de la lettre à mettre en vitesse peut être saisie avant précisément cette mise en vitese. Pour cela une tête de saisie d'image 14 est placée comme le montre la figure 7 sur le trajet de la partie supérieure de la lettre de manière à en déterminer l'épaisseur. L'information recueillie conduit alors à un ajustement des paramètres d'entraînement.To improve the individual separation of the leading letter from the set of folds inclined towards the rear, at the moment when suction starts by erasing the previous letter, the thickness of the letter to be speeded up can be entered before precisely this setting in vitese. For this an image capture head 14 is placed as shown in Figure 7 on the path of the upper part of the letter so as to determine the thickness. The information collected then leads to an adjustment of the training parameters.

Le fonctionnement d'un dépileur conforme à l'invention est décrit ci-dessous.The operation of a destacker according to the invention is described below.

Dans un premier temps un opérateur remplit de lettres les espaces compris entre les organes pousseurs du magasin d'alimentation. Quant cette opération est terminée, le magasin est mis en route. Dès qu'un premier tas de lettres est arrivé à proximité de la face de dépilage 2, le moyen de détection CI donne une information positive. A ce moment le magasin est arrêté et le jeu de courroies motorisées 33 est, ou est mis, en marche ainsi qu'éventuellement le premier moyen de soufflage 4. Comme cela à été dit précédemment, l'organe pousseur poussant le tas de lettres prêtes à être dépilées et détectées par le moyen de détection Cl peut également être mis en position inclinée vers l'arrière. C'est l'instant To. Le magasin est alors arrêté jusqu'à ce que la séparation et l'aspiration des plis par l'organe de mise en vitesse conduise la cellule Cl à ne plus être occultée.First, an operator fills the spaces between the pusher organs of the food store with letters. When this operation is finished, the store is started. As soon as a first pile of letters has arrived near the unstacking face 2, the detection means CI gives positive information. At this time the store is stopped and the set of motorized belts 33 is, or is started, as well as possibly the first blowing means 4. As has been said previously, the pusher pushing the pile of ready letters to be unstacked and detected by the detection means C1 can also be put in a tilted back position. This is the instant To. The store is then stopped until the separation and aspiration of the folds by the speed-setting member leads the cell C1 to no longer be obscured.

Contrairement à ce qui se passe dans les dispositifs connus, la lettre est alors donc en position inclinée, elle n'est pas appuyée (pressée) par le magasin d'alimentation contre la face de dépilage. A l'instant To + Tl la mise en route du caisson à dépression agissant sur les orifices d'aspiration 12 est mis en route ; ceci a pour effet de plaquer la première lettre se présentant au dépilage contre la face de dépilage 2. Le second moyen de détection C2 détecte le plaquage de cette première lettre du tas de lettres qui se présente. C'est l'instant To + Tx. Les seconds moyens de soufflage supérieurs 6 sont alors mis en route au temps To + T2. Ils ont, comme cela a été dit précédemment, pour fonction de ne permettre le plaquage sur la face de dépilage que de la seule lettre qui doit être mise en vitesse. Cet instant peut ou non coïncider avec le temps To + Tx. La transition de l'état occulté de la cellule Cl, avec l'état non occulté de cette même cellule se traduit par un signal de commande qui assure la remise en marche du magasin et le commencement d'un nouveau cycle. On peut donc dans le cas de chaque application introduire une commande sélective des différents moyens de détection et de commande, éventuellement par des moyens de temporisation, de manière à tenir compte de la nature des objets à dépiler. La mise en vitesse d'une lettre de 6mm se traduit par une modification de l'état du stock de lettres à proximité de l'organe de mise en vitesse très différent du cas où la lettre mise en vitesse a une épaisseur de quelques dizaines de mm. L'interprétation des informations venant du moyen de détection C2 permet de tenir compte de cette différence. Il est également assez habituel que des lots de courrier de caractéristiques générales équivalentes se présentent à l'entrée d'une machine. La répétitivité des informations des deux moyens de détection Cl et C2 permet un ajustement automatique des procédures de dépilage à la catégorie de courrier concerné.Contrary to what happens in known devices, the letter is therefore in an inclined position, it is not pressed (pressed) by the feed magazine against the unstacking face. At the instant To + Tl, the starting of the vacuum box acting on the suction orifices 12 is started; this has the effect of pressing the first letter appearing at the unstacking against the unstacking face 2. The second detection means C2 detects the plating of this first letter of the pile of letters which presents itself. It's time To + Tx. The second upper blowing means 6 are then started at time To + T2. They have, as has been said previously, the function of allowing the plating on the unstacking face only of the single letter which must be put in speed. This instant may or may not coincide with the time To + Tx. The transition from the occulted state of cell C l , with the non-occulted state of this same cell results in a control signal which ensures the restarting of the magazine and the start of a new cycle. In the case of each application, it is therefore possible to introduce selective control of the various detection and control means, possibly by means of timing, so as to take account of the nature of the objects to be unstacked. The speeding up of a 6mm letter results in a modification of the state of the stock of letters near the speeding device very different from the case where the letter speeding up has a thickness of a few tens of mm. The interpretation of the information coming from the detection means C2 makes it possible to take this difference into account. It is also quite common for batches of mail of equivalent general characteristics to appear at the entrance to a machine. The repetitivity of the information from the two detection means C1 and C2 allows an automatic adjustment of the unstacking procedures to the category of mail concerned.

Il peut arriver qu'un incident se produise en cours de fonctionnement. C'est le cas par exemple lorque se présente au dépilage un pas (espace entre deux organes pousseur 50 et 51) non rempli (figure 8). Ainsi contre la face de taquage des lettres (A), une cellule capacitive peut être prévue pour détecter la densité de lettres par pas. Le doigt avant 50 associé à ce pas est alors arrêté avant escamotage de manière à éviter une inclinaison arrière exagérée correspondant en fait à un étalement complet sur deux pas (figure 9) des plis (A). En effet le doigt suivant, 51 leur imprimerait alors, lors de son avance, une déformation inacceptable (figure 10) interdisant ensuite un plaquage contre la face de plaquage 2. Après cet arrêt, une procédure complète de démarrage est reprise comme décrite ci- dessus.It may happen that an incident occurs during operation. This is the case, for example, when unstacking presents itself with a pitch (space between two pusher members 50 and 51) that is not filled (FIG. 8). Thus against the jogging face of the letters (A), a cell capacitive may be provided to detect the density of letters per step. The front finger 50 associated with this step is then stopped before retraction so as to avoid an exaggerated rear tilt corresponding in fact to a complete spreading over two steps (FIG. 9) of the folds (A). Indeed, the next finger, 51 would then imprint upon them, during its advance, an unacceptable deformation (FIG. 10) then prohibiting a plating against the plating face 2. After this stop, a complete start-up procedure is resumed as described above. .

Les actions de régulation, grâce aux moyens mis en oeuvre dans la présente invention peuvent donc porter sur le niveau et la fréquence de pulsations des jets d'air supérieurs, la temporisation de la mise en service de l'alimentation générale des lettres et la vitesse de rotation du tapis d'amené des pieds de lettres contre la face de dépilage, l'intensité de la dépression du tambour de mise en vitesse.Regulatory actions, thanks to the means used in the present invention can therefore relate to the level and frequency of pulsations of the upper air jets, the timing of the commissioning of the general letter supply and the speed of rotation of the conveyor belt of the letter feet against the unstacking face, the intensity of the depression of the speeding drum.

Un dépileur conforme à l'invention grâce à la combinaison de moyens qui la caractérise conduit à un rendement maximal à cadence déterminée. Il permet de réduire le taux de prise double et le fait même tendre vers zéro, ce qui est une contrainte fondamentale pour ce type d'application. En limitant la désynchronisation, il dispense de mettre en oeuvre un dispositif complémentaire à l'entrée de la machine.A destacker according to the invention thanks to the combination of means which characterizes it leads to maximum output at a determined rate. It makes it possible to reduce the double setting rate and even makes it tend towards zero, which is a fundamental constraint for this type of application. By limiting desynchronization, it dispenses with the use of an additional device at the entrance to the machine.

On entend par cadence le nombre de plis mis en vitesse dans le dispositif de convoyage par unité de temps. Le rendement au dépilage, quant à lui, correspond au nombre de plis correctement introduits dans le dispositif de convoyage, c'est à dire se présentant de manière unitaire avec une assiette correcte et une synchronisation telle que souhaitée, par rapport au nombre de plis théoriques susceptibles d'être mis en vitesse.Cadence is understood to mean the number of folds set in speed in the conveying device per unit of time. The unstacking performance, meanwhile, corresponds to the number of folds correctly introduced into the conveying device, that is to say presenting itself in a unitary manner with a correct trim and a synchronization as desired, relative to the number of theoretical folds likely to be speeded up.

Claims (7)

1. Dépileur d'objets plats destiné à assurer la liaison entre un magasin d'alimentation jouant le rôle de stock tampon et d'unité de présentation et un organe (2) de mise en vitesse destiné à mettre en vitesse l'un après l'autre chaque objet pour son introduction dans un dispositif de convoyage destiné à acheminer les objets unitairement, comportant des moyens de contrôle (3) capables d'imposer aux objets arrivant du magasin d'alimentation une inclinaison selon un angle pC vers l'arrière par rapport à la direction du magasin déterminant ainsi pour chaque objet un angle d'inclinaison maintenu constant jusqu'à sa prise en charge individuellement par une face de dépilage (2) et comportant en outre des moyens (6) de soufflage capables d'accentuer la séparation entre l'objet (8) pris en charge par l'organe (2) de mise en vitesse et l'objet (7) qui le suit immédiatement, caractérisé en ce que les moyens de soufflage sont disposés au-dessus du chant supérieur des objets pris en charge.1. Unstacker of flat objects intended to ensure the connection between a food store playing the role of buffer stock and presentation unit and a speed-setting member (2) intended to speed up one after the other each object for its introduction into a conveyor device intended to convey the objects individually, comprising control means (3) capable of imposing on the objects arriving from the food store an inclination at an angle pC towards the rear by relative to the direction of the store thus determining for each object an angle of inclination kept constant until it is taken over individually by a unstacking face (2) and further comprising blowing means (6) capable of accentuating the separation between the object (8) supported by the speed-setting member (2) and the object (7) which immediately follows it, characterized in that the blowing means are arranged above the upper edge supported objects. 2. Dépileur selon la revendication précédente, caractérisé en ce qu'il comporte en outre des moyens d'appréciation (14) de l'épaisseur de l'objet pris en charge par l'organe de mise en vitesse capables d'agir sur la mise en vitesse de l'objet dépilé.2. Unstacker according to the preceding claim, characterized in that it further comprises means of appreciation (14) of the thickness of the object supported by the speed-up member capable of acting on the setting speed of the unstacked object. 3. Dépileur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un premier moyen de détection (CI), de l'arrivée du pied (9) de la première lettre à dépiler capable de déclencher le fonctionnement des moyens de contrôle (3) de l'angle α.3. Unstacker according to any one of the preceding claims, characterized in that it comprises a first detection means (CI), of the arrival of the foot (9) of the first letter to be unstacked capable of triggering the operation of the means control (3) of the angle α. 4. Dépileur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend en outre des seconds moyens de détection (C2) capables d'agir sur les moyens (6) de soufflage capables d'accentuer la séparation entre l'objet pris en charge et l'objet qui le suit immédiatement.4. Unstacker according to any one of the preceding claims, characterized in that it further comprises second detection means (C2) capable of acting on the blowing means (6) capable of accentuating the separation between the supported object and the object immediately following it. 5. Dépileur selon l'une quelconque des revendications 3 ou 4, caractérisé en ce qu'il comprend des moyens de commandes sélectives actionnées en fonction des signaux fournis par les moyens de détection (C1, C2).5. Unstacker according to any one of claims 3 or 4, characterized in that it comprises selective control means actuated as a function of the signals supplied by the detection means (C1, C2). 6. Dépileur selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens de contrôle (3) de l'angle α sont constitués par un jeu de courroies motorisées (33).6. Unstacker according to any one of the preceding claims, characterized in that the control means (3) of the angle α consist of a set of motorized belts (33). 7. Dépileur selon la revendication 6, caractérisé en ce que les moyens de contrôle (3) de l'angle α comportent en outre un moyen de soufflage inférieur (4).7. Unstacker according to claim 6, characterized in that the control means (3) of the angle α further comprises a lower blowing means (4).
EP19830400247 1982-02-19 1983-02-04 Unpiling device for flat articles such as mail Expired EP0087341B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8202794A FR2521962B1 (en) 1982-02-19 1982-02-19 FLAT OBJECT DEPLOYER SUCH AS POSTAL FOLD
FR8202794 1982-02-19

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EP0087341A2 true EP0087341A2 (en) 1983-08-31
EP0087341A3 EP0087341A3 (en) 1985-04-10
EP0087341B1 EP0087341B1 (en) 1988-04-06

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EP19830400247 Expired EP0087341B1 (en) 1982-02-19 1983-02-04 Unpiling device for flat articles such as mail

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EP (1) EP0087341B1 (en)
AU (1) AU1164883A (en)
CA (1) CA1205503A (en)
DE (1) DE3376205D1 (en)
FR (1) FR2521962B1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0387476A1 (en) * 1989-03-17 1990-09-19 Guy Martin Device to pick-up flat sheets separated form each other by an air blast
EP0562954A1 (en) * 1992-03-27 1993-09-29 Compagnie Generale D'automatisme Cga-Hbs Device for feeding a stack of flat objects arranged on edge to an unstacking head of an automatic sorting system and method for implementing this device
EP0582869A2 (en) * 1992-08-10 1994-02-16 FINMECCANICA S.p.A. Mail sorting device
FR2925474A1 (en) * 2007-12-20 2009-06-26 Solystic Sas DEVICE FOR DEPILING MULTI-MODE POSTAL SHIPMENTS
EP2143676A1 (en) * 2007-04-26 2010-01-13 Kabushiki Kaisha Toshiba Paper sheet taking-out device
CN114476697A (en) * 2022-01-28 2022-05-13 上海美诺福科技有限公司 Plate sample separating device

Citations (5)

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Publication number Priority date Publication date Assignee Title
BE554615A (en) * 1954-08-23
US2361907A (en) * 1942-08-08 1944-11-07 Dexter Folder Co Sheet feeding
DE1217405B (en) * 1964-04-18 1966-05-26 Standard Elektrik Lorenz Ag Device for peeling off stacked cards and similar objects at high speed
US3253825A (en) * 1962-07-12 1966-05-31 Int Standard Electric Corp Arrangement for individually extracting flat items from a conveyor system
FR2124716A5 (en) * 1972-01-07 1972-09-22 Giavazzi Marco

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2361907A (en) * 1942-08-08 1944-11-07 Dexter Folder Co Sheet feeding
BE554615A (en) * 1954-08-23
US3253825A (en) * 1962-07-12 1966-05-31 Int Standard Electric Corp Arrangement for individually extracting flat items from a conveyor system
DE1217405B (en) * 1964-04-18 1966-05-26 Standard Elektrik Lorenz Ag Device for peeling off stacked cards and similar objects at high speed
FR2124716A5 (en) * 1972-01-07 1972-09-22 Giavazzi Marco

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0387476A1 (en) * 1989-03-17 1990-09-19 Guy Martin Device to pick-up flat sheets separated form each other by an air blast
EP0562954A1 (en) * 1992-03-27 1993-09-29 Compagnie Generale D'automatisme Cga-Hbs Device for feeding a stack of flat objects arranged on edge to an unstacking head of an automatic sorting system and method for implementing this device
FR2689038A1 (en) * 1992-03-27 1993-10-01 Cga Hbs Device for arranging a pile of flat objects on edge toward an unloading head of an automatic sorting system and method for implementing this device.
US5308052A (en) * 1992-03-27 1994-05-03 Compagnie Generale D'automatisme Cga-Hbs Device for feeding a stack of flat articles on edge to de-stacker head of an automatic sorting machine and a method of operating this device
EP0582869A2 (en) * 1992-08-10 1994-02-16 FINMECCANICA S.p.A. Mail sorting device
EP0582869A3 (en) * 1992-08-10 1995-04-05 Finmeccanica Spa Mail sorting device.
EP2143676A1 (en) * 2007-04-26 2010-01-13 Kabushiki Kaisha Toshiba Paper sheet taking-out device
EP2143676A4 (en) * 2007-04-26 2011-12-07 Toshiba Kk Paper sheet taking-out device
WO2009080929A2 (en) * 2007-12-20 2009-07-02 Solystic Device for unstacking multimodal postal items
WO2009080929A3 (en) * 2007-12-20 2009-08-20 Solystic Device for unstacking multimodal postal items
FR2925474A1 (en) * 2007-12-20 2009-06-26 Solystic Sas DEVICE FOR DEPILING MULTI-MODE POSTAL SHIPMENTS
US8235377B2 (en) 2007-12-20 2012-08-07 Solystic Multi-mode unstacker device for unstacking mailpieces
CN114476697A (en) * 2022-01-28 2022-05-13 上海美诺福科技有限公司 Plate sample separating device
CN114476697B (en) * 2022-01-28 2023-10-27 上海美诺福科技有限公司 Sheet sample separating device

Also Published As

Publication number Publication date
EP0087341B1 (en) 1988-04-06
CA1205503A (en) 1986-06-03
EP0087341A3 (en) 1985-04-10
FR2521962B1 (en) 1985-12-27
AU1164883A (en) 1983-08-25
DE3376205D1 (en) 1988-05-11
FR2521962A1 (en) 1983-08-26

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