EP0861204B1 - Stacking pressure control device for a horizontal book stacking device - Google Patents

Stacking pressure control device for a horizontal book stacking device Download PDF

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Publication number
EP0861204B1
EP0861204B1 EP96938304A EP96938304A EP0861204B1 EP 0861204 B1 EP0861204 B1 EP 0861204B1 EP 96938304 A EP96938304 A EP 96938304A EP 96938304 A EP96938304 A EP 96938304A EP 0861204 B1 EP0861204 B1 EP 0861204B1
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EP
European Patent Office
Prior art keywords
stacking
pressure
vertical wall
strain gauge
rod
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EP96938304A
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German (de)
French (fr)
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EP0861204A1 (en
Inventor
Jean-Pierre Bodereau
Gilles Bodereau
Laurent Vernon
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Realisations Etudes & Commercialisation De Materiel Pour L'industrie Sa
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Realisations Etudes & Commercialisation De Materiel Pour L'industrie Sa
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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
    • B65H31/30—Arrangements for removing completed piles
    • B65H31/3072—Arrangements for removing completed piles by moving a surface supporting the pile of articles on edge, e.g. by using belts or carriages
    • 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
    • B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
    • B65H31/06—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled on edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/421—Forming a pile
    • B65H2301/4214—Forming a pile of articles on edge
    • B65H2301/42146—Forming a pile of articles on edge by introducing articles from above
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/422—Handling piles, sets or stacks of articles
    • B65H2301/4226—Delivering, advancing piles
    • B65H2301/42265—Delivering, advancing piles by moving the surface supporting the pile of articles on edge, e.g. conveyor or carriage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/40—Movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/34—Pressure, e.g. fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/20—Sensing or detecting means using electric elements
    • B65H2553/21—Variable resistances, e.g. rheostats, potentiometers or strain gauges

Definitions

  • the present invention relates to a regulation device stacking pressure in a stacker horizontal notebooks.
  • a stacking device horizontal notebook is described in FR-A-2 718 424 (patent application French n ° 94 04031 belonging to the applicant).
  • stacking devices do not have stacking pressure regulator and this is therefore fixed indirectly by the value the forward speed of the stacking table. In this type of device "blind", it is not possible to intervene in order to allow an adaptation of the stacking pressure during production. Only one varying the speed of the stacking table allows to adapt, a little bit, the stacking pressure between different productions.
  • a solution to allow adaptation of the stacking pressure is to use in the device stacking a floating stacking head as in EP-A-0 623 542, that is, you can get a point variable stacking allowing variation of pressure stacking.
  • the gravity sensing on the device floating stacking must be able to overcome its own inertia.
  • stacking can be disturbed because the pressure must be strong enough to defeat the inertia of the floating device, which risks damaging notebooks by marking on the fold (phenomenon of unwinding) or on the printed pattern (smudging phenomenon).
  • the stacking pressure depends on the arrival parameters and output of notebooks during stacking. So plus one flow of arrival of notebooks is great for a flow of constant output of notebooks and more stacking pressure is large and vice versa. However, for a debit of constant notebooks, plus the output rate of the larger the notebooks, the lower the stacking pressure and vice versa.
  • the plate interferes in the arrival of notebooks or rubs against said notebooks which disrupts the stacking which is no longer sufficient specific.
  • Document JP-A-07053119 describes a device pressure detection within the stack which has pressure sensing cells (thrust measurement bench) in the support member at the end of the stack in formation, several measuring cells placed in the vertical path to supply stacked notebooks and a measurement cell each fixing member.
  • Document US-A-5 253 859 describes a device stacker comprising a pressure regulating device stack consisting of a roller formed in the path stacking and which, under the effect of stacking pressure, linearly moves to a predetermined threshold where a switch is switched to control the advancement of the stacking table.
  • Document US-A-4,772,003 describes a device in which a vertical supply strap for the notebooks is fitted oscillating so as to constitute a pressure sensor, the oscillation being measured to regulate accordingly the speed of stacking avenacea.
  • a vertical supply strap for the notebooks is fitted oscillating so as to constitute a pressure sensor, the oscillation being measured to regulate accordingly the speed of stacking avenacea.
  • such device must first overcome its own inertia before ability to give a real measure of stacking pressure. As a result, the measurement is often imprecise or has the effect of threshold.
  • the present invention offers a pressure regulation device stacking allowing continuous measurement of this pressure in order to act on the output rate of the notebooks of the point stacking by changing the table speed while maintaining the most stacking point fixed possible while maintaining stacking pressure constant.
  • the invention relates to a device for stack pressure control for a device fixed horizontal stacking of notebooks on a table stacking with arrival along a vertical wall stacking notebooks, as defined in claim 1.
  • the strain gauge in as long as the stacking pressure sensor is placed way to measure directly, continuously and so linear, the pressure exerted on the vertical wall so to detect the variations occurring during a production in order to then intervene on the speed of the stacking table allowing to correct variations in pressure and keep it constant all along the stack.
  • the device comprises a potentiometer for electrically fixing a desired stacking pressure at the stacking point, in no longer acting physically on the pressure but on the electrical signal from the strain gauge which avoids any mechanical pressure adjustment in outside of a calibration at the installation of the device.
  • Pressure regulation is obtained in this way across the range of the strain gauge as well as a possibility to vary the pressure value desired stacking according to the wishes of users. So we can depending on the value of the stacking pressure fixed via the potentiometer get a variation in pressure between notebooks within the stack.
  • the strain gauge is placed behind the vertical wall and therefore directly measures the pressure exerted by stacking notebooks on said wall, transforming it into an electrical signal controlling the control means of the speed of the stacking table.
  • the axis of rotation of the pulleys on which at least the central stacking belts are wound, close to the stacking point on the stacking table is connected by a rod pivotally mounted around a second axis parallel to said axis of rotation.
  • the strain gauge is then placed so as to extend against said rod.
  • said pulley axis is free to pivot around the second axis through the rod.
  • the strain gauge extending against said rod is therefore positioned to directly measure the pressure exerted by notebooks on stacking belts and transforms this measurement into an electrical signal acting on the speed of the stacking table.
  • the device according to the invention advantageously allows measure the pressure at a single point thus avoiding disturbances even for a point shift minimal stacking and across the full range of the gauge constraint thus making it possible to obtain an analog measurement and linear suitable for accelerating or slowing down the advance of the stacking table without causing disturbances.
  • the device is sufficiently miniaturized so as not to disturb the stacking during the measurement of the pressure of said stacking, not causing a displacement d of the stacking point of more than 3 mm and in particular, the strain gauge advantageously allows measurements to be made for displacements d of the stacking point of less than 1 mm.
  • the horizontal stacking device for notebooks comprises, schematically, a stacking table 1 and a wall vertical stacking 2.
  • notebooks C arrive along the vertical wall 2, their backs first and come then abut against the stacking table 1.
  • a head stacking station (not shown) starts stacking.
  • the flow of arrival of notebooks C is preferably constant while the output rate of the stacking of notebooks C, depending on the speed of the stacking table 1 can be modified by the pressure regulation device according to the invention.
  • a strain gauge 3 placed behind the vertical wall 2 directly measures the pressure exerted by stacking notebooks C on said vertical wall 2 and transforms it into an electrical signal controlling table speed control means stacking 1.
  • FIG 2 there is shown a second mode of embodiment of the invention in which the vertical wall 2 consists of belts.
  • the Y axis of rotation of pulleys 4 around which the belts are wound is connected by a rod 5 to a parallel Z axis.
  • Rod 5 is pivotally mounted around said Z axis and fixed on the axis Y.
  • a strain gauge 6 extends along the rod 5, between said rod 5 and the vertical wall 2, and measure directly the pressure exerted by the notebooks on said vertical wall 2 due to the stress exerted by the rod 5 on said gauge 6 during pivoting of said rod 5.
  • the strain gauge 6 measures the stress exerted, varying as a function of the distance d of displacement of the stacking point, and transforms it into an electrical quantity which will act on the means for controlling the speed of the stacking table 1 .
  • the rod 5 forms an angle right at the Z axis and has a portion 7 extending perpendicularly.
  • This portion 7 of the stem 5 extends against a strain gauge 8 which measures the variations in the stress exerted by portion 7 of the rod 5 according to the displacement of said rod 5 directly under the pressure exerted by notebooks C on the vertical wall 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Fuel Cell (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Control Of Fluid Pressure (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)

Abstract

PCT No. PCT/FR96/01791 Sec. 371 Date Jul. 13, 1998 Sec. 102(e) Date Jul. 13, 1998 PCT Filed Nov. 13, 1996 PCT Pub. No. WO97/18152 PCT Pub. Date May 22, 1997A stacking pressure control device for a stationary horizontal book stacking device in which books (C) fed at a constant rate along a vertical wall (2) are stacked on a stacking table (1). The control device consists of a strain gauge used as a pressure sensor (3, 6, 8) for continuously measuring the stacking pressure exerted directly on the vertical wall (2), and controlling the speed of the stacking table (1). The control device may be used in a horizontal book stacking device.

Description

La présente invention concerne un dispositif de régulation de la pression d'empilage dans un dispositif d'empilage horizontal de cahiers. Un tel dispositif d'empilage de cahier horizontal est décrit dans FR-A-2 718 424 (demande de brevet français n°94 04031 appartenant au demandeur).The present invention relates to a regulation device stacking pressure in a stacker horizontal notebooks. Such a stacking device horizontal notebook is described in FR-A-2 718 424 (patent application French n ° 94 04031 belonging to the applicant).

On a pu observer que l'obtention d'un empilage de bonne qualité dépend en grande partie de la constance de la pression d'empilage. Cependant, cette pression d'empilage constante pour un cahier donné d'une production donnée change d'une production à une autre du fait du changement des conditions de production, compte tenu des variations propres aux paramètres de production qui sont l'épaisseur du papier, l'épaisseur de l'encre, la variation du grammage, du pas de nappe, etc..It has been observed that obtaining a stack of good quality largely depends on the consistency of the stacking pressure. However, this stacking pressure constant for a given notebook of a given production changes from one production to another due to the change production conditions, taking into account variations specific to the production parameters which are the thickness of paper, the thickness of the ink, the variation of grammage, pitch, etc.

On a observé également que ces conditions de production peuvent changer également à l'intérieur d'une même production. En conséquence, il est nécessaire de pouvoir adapter la pression d'empilage entre deux productions différentes mais également au sein d'une même production afin de réaliser un empilage de bonne qualité. Il est de ce fait nécessaire de pouvoir mesurer en permanence cette pression d'empilage afin de l'adapter.It has also been observed that these production conditions can also change within the same production. Consequently, it is necessary to be able adapt the stacking pressure between two productions different but also within the same production in order to achieve good quality stacking. It is from this makes it necessary to be able to continuously measure this stacking pressure to adapt it.

La plupart des dispositifs d'empilage ne comportent pas de dispositif de régulation de la pression d'empilage et celle-ci est donc fixée de manière indirecte par la valeur de la vitesse d'avancement de la table d'empilage. Dans ce type de dispositif "aveugle", il n'est pas possible d'intervenir afin de permettre une adaptation de la pression d'empilage en cours de production. Seule une variation de la vitesse de la table d'empilage permet d'adapter, un tant soit peu, la pression d'empilage entre des productions différentes.Most stacking devices do not have stacking pressure regulator and this is therefore fixed indirectly by the value the forward speed of the stacking table. In this type of device "blind", it is not possible to intervene in order to allow an adaptation of the stacking pressure during production. Only one varying the speed of the stacking table allows to adapt, a little bit, the stacking pressure between different productions.

Une solution visant à permettre une adaptation de la pression d'empilage consiste à utiliser dans le dispositif d'empilage une tête d'empilage flottante telle que dans EP-A-0 623 542, c'est-à-dire qu'on peut obtenir un point d'empilage variable permettant une variation de la pression d'empilage. Cependant, dans ce cas, le dispositif de détection fonctionnant par gravité sur le dispositif d'empilage flottant doit pouvoir vaincre sa propre inertie. En outre, l'empilage peut être perturbé car la pression d'empilage doit être suffisamment forte pour vaincre l'inertie du dispositif flottant, ce qui risque d'abímer les cahiers par marquage sur le pli (phénomène de déroulage) ou sur le motif imprimé (phénomène de maculage).A solution to allow adaptation of the stacking pressure is to use in the device stacking a floating stacking head as in EP-A-0 623 542, that is, you can get a point variable stacking allowing variation of pressure stacking. However, in this case, the gravity sensing on the device floating stacking must be able to overcome its own inertia. In addition, stacking can be disturbed because the pressure must be strong enough to defeat the inertia of the floating device, which risks damaging notebooks by marking on the fold (phenomenon of unwinding) or on the printed pattern (smudging phenomenon).

La pression d'empilage dépend des paramètres d'arrivée et de sortie de cahiers lors de l'empilage. Ainsi, plus un débit d'arrivée de cahiers est grand pour un débit de sortie de cahiers constant et plus la pression d'empilage est grande et vice-versa. Par contre, pour un débit d'arrivée de cahiers constant, plus le débit de sortie de cahiers est grand et plus la pression d'empilage est faible et inversement. The stacking pressure depends on the arrival parameters and output of notebooks during stacking. So plus one flow of arrival of notebooks is great for a flow of constant output of notebooks and more stacking pressure is large and vice versa. However, for a debit of constant notebooks, plus the output rate of the larger the notebooks, the lower the stacking pressure and vice versa.

Il est donc important que la mesure de la pression d'empilage au cours d'une production permette de modifier certains paramètres de l'empilage, en particulier le débit de sortie des cahiers, afin d'obtenir une pression d'empilage constante tout en préservant les conditions d'empilage qui ne doivent pas être perturbées par cette mesure. En effet, il est important de conserver un point d'empilage le plus fixe possible.It is therefore important that the measurement of the pressure stacking during production allows modification some stacking parameters, especially the flow output of notebooks, in order to obtain pressure constant stacking while preserving the conditions stacking which should not be disturbed by this measured. Indeed, it is important to keep a point as fixed as possible.

Une solution consiste alors à proposer un dispositif de régulation de la pression d'empilage dans lequel on mesure cette pression. Ainsi, on peut positionner une plaque dans le chemin d'arrivée verticale des cahiers sur la table d'empilage telle que dans EP-A-0 339 002. Cette plaque est montée pivotante à son extrémité supérieure et est reliée à un levier raccordé à son autre extrémité à un ressort. Lors de l'arrivée des cahiers sur la table, la plaque pivote en fonction de la pression desdits cahiers et le levier entre en mouvement également. Un capteur décèle le mouvement dudit levier et commande la régulation de la vitesse d'avancée de la table en fonction des informations reçues.One solution then consists in proposing a device for regulation of the stacking pressure in which we measure this pressure. So we can position a plate in the vertical path of the notebooks on the table stacking as in EP-A-0 339 002. This plate is swivel mounted at its upper end and is connected to a lever connected at its other end to a spring. When the arrival of the notebooks on the table, the plate swivels in depending on the pressure of said notebooks and the lever between also in motion. A sensor detects movement said lever and controls the speed regulation table advance based on the information received.

Cependant, dans un tel dispositif, la plaque interfère dans l'arrivée des cahiers ou bien frotte contre lesdits cahiers ce qui perturbe l'empilage qui n'est plus suffisamment précis.However, in such a device, the plate interferes in the arrival of notebooks or rubs against said notebooks which disrupts the stacking which is no longer sufficient specific.

Dans le document JP-A-59102761, on propose de placer un capteur de pression dans le chemin d'arrivée verticale des cahiers qui entraíne l'avancée de la table d'empilage d'une certaine valeur lorsqu'il détecte une valeur de pression au-dessus d'une valeur prédéterminée. Un tel dispositif ne permet pas une régulation en continu de la pression d'empilage et est plutôt destiné à régler, par à coup, l'avance des cahiers sur une table d'empilage. De ce fait, on obtient un empilage de précision moyenne et perturbé. In document JP-A-59102761, it is proposed to place a pressure sensor in the vertical arrival path of notebooks which lead to the advancement of the stacking table certain value when it detects a pressure value above a predetermined value. Such a device does not not allow continuous pressure regulation stacking and is rather intended to settle, suddenly, advance the notebooks on a stacking table. Thereby, we obtain a stacking of medium precision and disturbed.

Le document JP-A-07053119 décrit un dispositif de détection de la pression au sein de l'empilage qui comporte des cellules de détection de pression (banc de mesure de poussée) dans l'organe de support à l'extrémité de l'empilage en formation, plusieurs cellules de mesure placées dans le chemin vertical d'amenée des cahiers à empiler et une cellule de mesure de chaque organe de fixation.Document JP-A-07053119 describes a device pressure detection within the stack which has pressure sensing cells (thrust measurement bench) in the support member at the end of the stack in formation, several measuring cells placed in the vertical path to supply stacked notebooks and a measurement cell each fixing member.

Le document US-A-5 253 859 décrit un dispositif d'empilage comportant un dispositif de régulation de la pression d'empilage constitué d'un rouleau ménagé dans le chemin d'empilage et qui, sous l'effet de la pression d'empilage, se déplace linéairement jusqu'à un seuil prédéterminé où un interrupteur est commuté pour commander l'avancement de la table d'empilage. Document US-A-5 253 859 describes a device stacker comprising a pressure regulating device stack consisting of a roller formed in the path stacking and which, under the effect of stacking pressure, linearly moves to a predetermined threshold where a switch is switched to control the advancement of the stacking table.

Le document US-A-4 772 003 décrit un dispositif dans lequel une courroie d'amenée verticale des cahiers est montée oscillante de manière à constituer un capteur de pression, l'oscillation étant mesurée pour réguler en conséquence la vitesse d'avnacée de l'empilage. Cependant, un tel dispositif doit d'abord vaincre sa propre inertie avant de pouvoir donner une réelle mesure de la pression d'empilage. De ce fait, la mesure est souvent imprécise ou à effet de seuil.Document US-A-4,772,003 describes a device in which a vertical supply strap for the notebooks is fitted oscillating so as to constitute a pressure sensor, the oscillation being measured to regulate accordingly the speed of stacking avenacea. However, such device must first overcome its own inertia before ability to give a real measure of stacking pressure. As a result, the measurement is often imprecise or has the effect of threshold.

Afin de pallier ces inconvénients, la présente invention propose un dispositif de régulation de la pression d'empilage permettant la mesure continue de cette pression afin d'agir sur le débit de sortie des cahiers du point d'empilage en modifiant la vitesse d'avancement de la table d'empilage tout en maintenant le point d'empilage le plus fixe possible en maintenant la pression d'empilage constante.In order to overcome these drawbacks, the present invention offers a pressure regulation device stacking allowing continuous measurement of this pressure in order to act on the output rate of the notebooks of the point stacking by changing the table speed while maintaining the most stacking point fixed possible while maintaining stacking pressure constant.

A cet effet, l'invention a pour objet un dispositif de régulation de la pression d'empilage pour un dispositif fixe d'empilage horizontal de cahiers sur une table d'empilage avec arrivée le long d'une paroi verticale d'empilage des cahiers, tel que défini dans la revendication 1.To this end, the invention relates to a device for stack pressure control for a device fixed horizontal stacking of notebooks on a table stacking with arrival along a vertical wall stacking notebooks, as defined in claim 1.

Ainsi, la jauge de contrainte en tant que capteur de pression d'empilage est placée de manière à mesurer directement, en continu et de manière linéaire, la pression exercée sur la paroi verticale afin de détecter les variations intervenant au cours d'une production afin d'intervenir ensuite sur la vitesse de la table d'empilage permettant ainsi de corriger les variations de la pression et de la maintenir constante tout au long de l'empilage. So the strain gauge in as long as the stacking pressure sensor is placed way to measure directly, continuously and so linear, the pressure exerted on the vertical wall so to detect the variations occurring during a production in order to then intervene on the speed of the stacking table allowing to correct variations in pressure and keep it constant all along the stack.

En outre, de manière avantageuse, le dispositif comporte un potentiomètre permettant de fixer électriquement une pression d'empilage désirée au point d'empilage, en agissant non plus physiquement sur la pression mais sur le signal électrique issu de la jauge de contrainte ce qui permet d'éviter tout réglage mécanique de pression en dehors d'un tarage à l'installation du dispositif.In addition, advantageously, the device comprises a potentiometer for electrically fixing a desired stacking pressure at the stacking point, in no longer acting physically on the pressure but on the electrical signal from the strain gauge which avoids any mechanical pressure adjustment in outside of a calibration at the installation of the device.

On obtient de cette manière une régulation de la pression sur toute la plage de la jauge de contrainte ainsi qu'une possibilité de faire varier la valeur de la pression d'empilage recherchée en fonction des souhaits des utilisateurs. Ainsi, on peut en fonction de la valeur de la presssion d'empilage fixée par l'intermédiaire du potentiomètre obtenir une variation de la pression entre cahiers au sein de l'empilage.Pressure regulation is obtained in this way across the range of the strain gauge as well as a possibility to vary the pressure value desired stacking according to the wishes of users. So we can depending on the value of the stacking pressure fixed via the potentiometer get a variation in pressure between notebooks within the stack.

Selon un premier mode de réalisation de l'invention, la jauge de contrainte est placée derrière la paroi verticale et mesure donc directement la pression exercée par l'empilage de cahiers sur ladite paroi, la transformant en un signal électrique commandant le moyen de commande de la vitesse de la table d'empilage.According to a first embodiment of the invention, the strain gauge is placed behind the vertical wall and therefore directly measures the pressure exerted by stacking notebooks on said wall, transforming it into an electrical signal controlling the control means of the speed of the stacking table.

Lorsque la paroi verticale est constituée par des courroies d'empilage, l'axe de rotation des poulies sur lesquelles sont enroulées au moins les courroies centrales d'empilage, proche du point d'empilage sur la table d'empilage est relié par une tige montée pivotante autour d'un second axe parallèle audit axe de rotation.When the vertical wall consists of belts stacking, the axis of rotation of the pulleys on which at least the central stacking belts are wound, close to the stacking point on the stacking table is connected by a rod pivotally mounted around a second axis parallel to said axis of rotation.

Selon un second mode de réalisation de l'invention, la jauge de contrainte est alors placée de manière à s'étendre contre ladite tige.According to a second embodiment of the invention, the strain gauge is then placed so as to extend against said rod.

Sous l'effet de la pression exercée par les cahiers lors de l'empilage, ledit axe des poulies est libre de pivoter autour du second axe par l'intermédiaire de la tige. La jauge de contrainte s'étendant contre ladite tige est donc positionnée pour mesurer directement la pression exercée par les cahiers sur les courroies d'empilage et transforme cette mesure en un signal électrique agissant sur la vitesse de la table d'empilage.Under the effect of the pressure exerted by the notebooks during stacking, said pulley axis is free to pivot around the second axis through the rod. The strain gauge extending against said rod is therefore positioned to directly measure the pressure exerted by notebooks on stacking belts and transforms this measurement into an electrical signal acting on the speed of the stacking table.

Le dispositif selon l'invention permet avantageusement de mesurer la pression en un seul point évitant ainsi des perturbations et ce, même pour un déplacement du point d'empilage minimal et sur toute la plage de la jauge de contrainte permettant ainsi d'obtenir une mesure analogique et linéaire propre à accélérer ou à ralentir l'avance de la table d'empilage sans provoquer de perturbations.The device according to the invention advantageously allows measure the pressure at a single point thus avoiding disturbances even for a point shift minimal stacking and across the full range of the gauge constraint thus making it possible to obtain an analog measurement and linear suitable for accelerating or slowing down the advance of the stacking table without causing disturbances.

De préférence, le dispositif est suffisamment miniaturisé pour ne pas perturber l'empilage lors de la mesure de la pression dudit empilage, n'entraínant pas un déplacement d du point d'empilage de plus de 3 mm et en particulier, la jauge de contrainte permet avantageusement de réaliser des mesures pour des déplacements d du point d'empilage inférieurs à 1 mm.Preferably, the device is sufficiently miniaturized so as not to disturb the stacking during the measurement of the pressure of said stacking, not causing a displacement d of the stacking point of more than 3 mm and in particular, the strain gauge advantageously allows measurements to be made for displacements d of the stacking point of less than 1 mm.

Ainsi, la force exercée par la pression des cahiers est suffisamment détectable par une jauge de contrainte pour permettre une mesure de la variation de la pression mais également suffisamment minime pour permettre d'éviter toute perturbation dans l'empilage. En outre, toute variation de pression influant sur ledit point d'empilage est immédiatement compensée par le dispositif selon l'invention du fait de la mesure continue de cette pression.So the force exerted by the pressure of the notebooks is sufficiently detectable by a strain gauge to allow a measurement of the pressure variation but also minimal enough to avoid any disturbance in stacking. In addition, any variation in pressure influencing said stacking point is immediately compensated by the device according to the invention due to the continuous measurement of this pressure.

On décrira maintenant plus en détail la présente invention en référence au dessin annexé dans lequel :

  • la figure 1 représente une vue en élévation latérale du premier mode de réalisation du dispositif de régulation de l'invention ;
  • la figure 2 représente une vue en élévation latérale du second mode de réalisation du dispositif de régulation de l'invention ; et
  • la figure 3 représente une vue en élévation latérale d'une variante de la figure 2.
    • The present invention will now be described in more detail with reference to the accompanying drawing in which:
  • Figure 1 shows a side elevational view of the first embodiment of the regulating device of the invention;
  • FIG. 2 represents a side elevation view of the second embodiment of the regulation device of the invention; and
  • FIG. 3 represents a side elevation view of a variant of FIG. 2.

    • Le dispositif d'empilage horizontal de cahiers comporte, de manière schématique, une table d'empilage 1 et une paroi verticale d'empilage 2. Les cahiers C arrivent le long de la paroi verticale 2, leur dos en premier et viennent ensuite buter contre la table d'empilage 1. Une tête d'empilage fixe (non représentée) démarre l'empilage. Le débit d'arrivée des cahiers C est, de préférence, constant tandis que le débit de sortie de l'empilage des cahiers C, dépendant de la vitesse de la table d'empilage 1 peut être modifié par le dispositif de régulation de la pression selon l'invention.The horizontal stacking device for notebooks comprises, schematically, a stacking table 1 and a wall vertical stacking 2. Notebooks C arrive along the vertical wall 2, their backs first and come then abut against the stacking table 1. A head stacking station (not shown) starts stacking. The flow of arrival of notebooks C is preferably constant while the output rate of the stacking of notebooks C, depending on the speed of the stacking table 1 can be modified by the pressure regulation device according to the invention.

    Selon la figure 1, une jauge de contrainte 3, placée derrière la paroi verticale 2 mesure directement la pression exercée par l'empilage de cahiers C sur ladite paroi verticale 2 et la transforme en un signal électrique commandant le moyen de commande de la vitesse de la table d'empilage 1.According to FIG. 1, a strain gauge 3, placed behind the vertical wall 2 directly measures the pressure exerted by stacking notebooks C on said vertical wall 2 and transforms it into an electrical signal controlling table speed control means stacking 1.

    A la figure 2, on a représenté un second mode de réalisation de l'invention dans lequel la paroi verticale 2 est constituée de courroies. L'axe Y de rotation des poulies 4 autour desquelles les courroies sont enroulées est relié par une tige 5 à un axe Z parallèle. La tige 5 est montée pivotante autour dudit axe Z et fixe sur l'axe Y. Une jauge de contrainte 6 s'étend le long de la tige 5, entre ladite tige 5 et la paroi verticale 2, et mesure directement la pression exercée par les cahiers sur ladite paroi verticale 2 du fait de la contrainte exercée par la tige 5 sur ladite jauge 6 lors du pivotement de ladite tige 5. In Figure 2, there is shown a second mode of embodiment of the invention in which the vertical wall 2 consists of belts. The Y axis of rotation of pulleys 4 around which the belts are wound is connected by a rod 5 to a parallel Z axis. Rod 5 is pivotally mounted around said Z axis and fixed on the axis Y. A strain gauge 6 extends along the rod 5, between said rod 5 and the vertical wall 2, and measure directly the pressure exerted by the notebooks on said vertical wall 2 due to the stress exerted by the rod 5 on said gauge 6 during pivoting of said rod 5.

    En effet, du fait de la pression d'empilage contre la paroi verticale 2 ou plus précisément contre les poulies, ledit axe Y des poulies est libre de pivoter autour du second axe Z par l'intermédiaire de la tige 5 et donc de se déplacer. La jauge de contrainte 6 mesure la contrainte exercée, variant en fonction de la distance d de déplacement du point d'empilage, et la transforme en une grandeur électrique qui va agir sur le moyen de commande de la vitesse de la table d'empilage 1.Indeed, due to the stacking pressure against the vertical wall 2 or more precisely against the pulleys, said axis Y of the pulleys is free to pivot around the second axis Z via the rod 5 and therefore to move . The strain gauge 6 measures the stress exerted, varying as a function of the distance d of displacement of the stacking point, and transforms it into an electrical quantity which will act on the means for controlling the speed of the stacking table 1 .

    Selon la variante de la figure 3, la tige 5 forme un angle droit au niveau de l'axe Z et présente une portion 7 s'étendant perpendiculairement. Cette portion 7 de la tige 5 s'étend contre une jauge de contrainte 8 qui mesure les variations de la contrainte exercée par la portion 7 de la tige 5 selon le déplacement de ladite tige 5 directement sous l'effet de la pression exercée par les cahiers C sur la paroi verticale 2.According to the variant of Figure 3, the rod 5 forms an angle right at the Z axis and has a portion 7 extending perpendicularly. This portion 7 of the stem 5 extends against a strain gauge 8 which measures the variations in the stress exerted by portion 7 of the rod 5 according to the displacement of said rod 5 directly under the pressure exerted by notebooks C on the vertical wall 2.

    Claims (6)

    1. Stacking pressure control device for a fixed horizontal book stacking device on a stacking table (1) with arrival of the books (B) along a vertical wall (2),
      characterised in that it consists of a strain gauge (3, 6, 8) as pressure sensor suited to measuring, continuously and linearly, the stacking pressure exerted directly on the vertical wall (2) and to converting each pressure measurement into an electrical signal controlling the speed control means for the stacking table (1) so as to exercise continuous control of the forward speed of the stacking table (1).
    2. Device according to Claim 1,
      characterised in that the strain gauge is positioned behind the vertical wall (2) and directly measures the pressure exerted by stacking books (B) on the said wall (2).
    3. Device according to Claim 1,
      characterised in that, when the vertical wall (2) consists of stacking belts, the rotary shaft Y of the pulleys around which at least the central stacking belts are wrapped, close to the stacking point on the stacking table (1), is connected by a rod (5) pivotally mounted about a second shaft Z parallel to the said rotary shaft Y and the strain gauge (6, 8) is then positioned so as to extend in contact with the said rod (5).
    4. Device according to Claim 3,
      characterised in that the strain gauge (6) extends along the rod (5), between the rod (5) and the vertical wall (2).
    5. Device according to Claim 3,
      characterised in that the rod (5) forms a right angle at the height of the shaft Z and has a portion (7) extending perpendicularly, a strain gauge (8) extending along the said portion (7).
    6. Device according to one of Claims 1 to 5,
      characterised in that it contains a potentiometer for electrically setting the desired pressure at the stacking point.
    EP96938304A 1995-11-13 1996-11-13 Stacking pressure control device for a horizontal book stacking device Expired - Lifetime EP0861204B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    FR9513408 1995-11-13
    FR9513408A FR2741055B1 (en) 1995-11-13 1995-11-13 DEVICE FOR REGULATING THE STACKING PRESSURE FOR A HORIZONTAL STACKING DEVICE OF NOTEBOOKS
    PCT/FR1996/001791 WO1997018152A1 (en) 1995-11-13 1996-11-13 Stacking pressure control device for a horizontal book stacking device

    Publications (2)

    Publication Number Publication Date
    EP0861204A1 EP0861204A1 (en) 1998-09-02
    EP0861204B1 true EP0861204B1 (en) 2000-07-26

    Family

    ID=9484497

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96938304A Expired - Lifetime EP0861204B1 (en) 1995-11-13 1996-11-13 Stacking pressure control device for a horizontal book stacking device

    Country Status (7)

    Country Link
    US (1) US6142464A (en)
    EP (1) EP0861204B1 (en)
    AT (1) ATE194968T1 (en)
    DE (1) DE69609520T2 (en)
    ES (1) ES2151679T3 (en)
    FR (1) FR2741055B1 (en)
    WO (1) WO1997018152A1 (en)

    Families Citing this family (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE10236952B3 (en) * 2002-08-13 2004-03-25 Siemens Ag Device for stacking flat items in a stack holder
    DE102004010102B4 (en) * 2004-02-27 2010-09-09 Mathias Bäuerle GmbH Control for automatic adjustment of the pressure of a feeder in the inlet area of upright stack displays
    DE102004012379B4 (en) * 2004-03-13 2006-01-19 Siemens Ag Method and device for stacking flat items

    Family Cites Families (14)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    JPS59102761A (en) * 1982-12-01 1984-06-13 Miyakoshi Kikai Seisaku Kk Paper handling device
    DD236074A1 (en) * 1985-04-08 1986-05-28 Polygraph Leipzig PRINT RELIEF DEVICE FOR CONTROLLING THE TRANSPORT SPEED OF STACKS
    US4772003A (en) * 1987-02-24 1988-09-20 Dainihon Insatsu Kabushiki Kaisha Apparatus for stacking signatures or the like
    IT1217429B (en) * 1988-04-18 1990-03-22 Omg Pessina Perobelli STACKING MACHINE OF SIGNATURES, WITH CONTINUOUS OPERATION, PROVIDED WITH A SPECIAL DEVICE FOR THE EXPULSION, IN TRANSVERSAL SENSE, OF THE PACKAGE FORMED
    DE8808242U1 (en) * 1988-06-27 1988-11-17 Carl Neuburger & Co GmbH, Wien Device for dividing a stack of printed products
    JPH0295627A (en) * 1988-09-30 1990-04-06 Omron Tateisi Electron Co Paper sheet takeup and accumulation device
    US5064185A (en) * 1989-01-18 1991-11-12 Bell & Howell Phillipsburg Company Method and apparatus for feeding and stacking articles
    FR2647425B1 (en) * 1989-05-25 1992-04-17 Mainnette Jean Marc TEMPORARY STORAGE DEVICE FOR FLAT OBJECTS, IN PARTICULAR FOR MAIL ENVELOPES
    FR2674837B1 (en) * 1991-04-04 1993-07-30 Darchis Pierre DEVICE FOR FORMING A STACK OF FLAT OBJECTS, ESPECIALLY MAIL ENVELOPES.
    US5253859A (en) * 1991-06-07 1993-10-19 Mario Ricciardi Apparatus and method for stacking sheet-like articles
    JP4318322B2 (en) * 1993-05-07 2009-08-19 グラプハ−ホルディング・アクチエンゲゼルシヤフト Apparatus for forming a stack oriented in a vertical direction with respect to papers standing in parallel
    JPH0753110A (en) * 1993-08-19 1995-02-28 Dainippon Printing Co Ltd Printed sheet accumulating device
    FR2718424B1 (en) * 1994-04-06 1996-05-15 Realisations Etu Commerc Mat I Method and device for stacking printed or unprinted notebooks with vertical arrival.
    JPH082780A (en) * 1994-06-22 1996-01-09 Dainippon Printing Co Ltd Accumulating load measuring device for printed sheet accumulating device

    Also Published As

    Publication number Publication date
    FR2741055A1 (en) 1997-05-16
    WO1997018152A1 (en) 1997-05-22
    US6142464A (en) 2000-11-07
    FR2741055B1 (en) 1998-01-02
    EP0861204A1 (en) 1998-09-02
    ATE194968T1 (en) 2000-08-15
    DE69609520D1 (en) 2000-08-31
    ES2151679T3 (en) 2001-01-01
    DE69609520T2 (en) 2001-04-19

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