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EP1667824A1 - Automatic bread slicing machine - Google Patents

Automatic bread slicing machine

Info

Publication number
EP1667824A1
EP1667824A1 EP04761500A EP04761500A EP1667824A1 EP 1667824 A1 EP1667824 A1 EP 1667824A1 EP 04761500 A EP04761500 A EP 04761500A EP 04761500 A EP04761500 A EP 04761500A EP 1667824 A1 EP1667824 A1 EP 1667824A1
Authority
EP
European Patent Office
Prior art keywords
bread
drive element
speed
motor
regulating means
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
EP04761500A
Other languages
German (de)
French (fr)
Other versions
EP1667824B1 (en
Inventor
Baudouin Van Cauwenberghe
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.)
Sa Jac Nv
Original Assignee
Sa Jac Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sa Jac Nv filed Critical Sa Jac Nv
Priority to EP20040761500 priority Critical patent/EP1667824B1/en
Publication of EP1667824A1 publication Critical patent/EP1667824A1/en
Application granted granted Critical
Publication of EP1667824B1 publication Critical patent/EP1667824B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0608—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by pushers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/10—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
    • B26D1/11—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge with a plurality of cutting members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/547—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a wire-like cutting member
    • B26D1/553—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a wire-like cutting member with a plurality of wire-like cutting members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/27—Means for performing other operations combined with cutting
    • B26D7/32—Means for performing other operations combined with cutting for conveying or stacking cut product
    • B26D2007/327—Means for performing other operations combined with cutting for conveying or stacking cut product the cut products being slices of bread
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D2210/00—Machines or methods used for cutting special materials
    • B26D2210/02—Machines or methods used for cutting special materials for cutting food products, e.g. food slicers
    • B26D2210/06—Machines or methods used for cutting special materials for cutting food products, e.g. food slicers for bread, e.g. bread slicing machines for use in a retail store
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/141—With means to monitor and control operation [e.g., self-regulating means]
    • Y10T83/148—Including means to correct the sensed operation

Definitions

  • the present invention relates to an automated cutting device for sliced breads.
  • Automatic devices for cutting slices of bread are well known. They are found in most artisan bakeries and also in supermarkets. These devices, or automatic bread slicers, operate according to the following principle: The user of the device introduces the bread he wishes to cut into slices by placing it in a compartment disposed between a bread driving element and a set of parallel blades for slicing said bread. The user then switches on the device by activating the switch provided for this purpose, which causes the blades to alternate and to move in translation transversely to the direction of the blades of the bread drive element. The bread is therefore moved by this drive element towards the blades and the cutting begins when it comes into contact with the latter.
  • the user collects his bread cut into slices in a compartment arranged on the side of the blades opposite to that where the bread loading compartment is arranged in the device. It then remains for this user to pack the cut bread.
  • the power of the motor driving the bread drive element is constant and therefore cannot be adapted to the type of bread whose slicing is desired, depending on the speed of movement of the bread driving element during the operation of cutting. This poses a problem with the quality of the bread cut.
  • a system for controlling the power of a first motor actuating the bread driving element comprising a second motor comprising at least one spring or a counterweight that can slide on a tilting guide, so as to oppose the action of the first depending on the force exerted by the bread driving element on the cutting blades of the latter and therefore the speed and / or acceleration of said drive element.
  • a system for controlling the power of a first motor actuating the bread driving element comprising a second motor comprising at least one spring or a counterweight that can slide on a tilting guide, so as to oppose the action of the first depending on the force exerted by the bread driving element on the cutting blades of the latter and therefore the speed and / or acceleration of said drive element.
  • Such a system is however mechanically complex in its design and unreliable and precise in its operation.
  • the present invention solves the aforementioned problem and overcomes the disadvantages associated therewith by providing an automated slicing device for sliced breads in which the speed of the bread driving element is automatically adapted
  • the invention consists of an automated device for cutting a sliced bread comprising a bread drive element arranged to be moved by means of a displacement means coupled to said element between a first recoil position in which the bread to be cut can be loaded into the device and a second advance position in which the cut bread can be removed from the device, the latter further comprising a set of bread cutting blades arranged substantially parallel to each other and arranged to be reciprocated back and forth, the bread driving element being arranged so that, when the device is in operation, driving the bread in a translational movement towards and through the set of blades between the first and second position of said element, the device further comprising a regulating means arranged to regulate automatically the power supplied by the displacement means as a function of the speed and / or of the acceleration of the translational movement of the bread driving element during the cutting operation thereof, by comparing the displacement speed of the driving element at a predetermined speed and respectively increasing or decreasing the power of the moving
  • the cutting of a bread is always optimized according to the type of bread in question. Indeed, when the bread opposes a significant resistance to the blades at the start of cutting, i.e.
  • the speed of movement of the drive element will be quickly and greatly reduced and this strong and rapid deceleration will be identified by means of regulation which will reduce the power supplied by the means of displacement of the drive element and the crust will therefore be cut without it being broken by crushing the bread on the blades due to too high a speed and / or acceleration of movement of the bread driving element.
  • the resistance of the bread to the blades decreases and the speed of movement of the bread driving element increases. If this speed does not exceed a predetermined threshold value, the power supplied by the means for moving the drive element is increased in stages until said threshold value is reached.
  • the device 1 comprises a frame 2 comprising a cutting table 3 for a loaf 4 which is placed in a loading compartment 5 of the device.
  • This further comprises a bread driving element 7 and a set of blades 8 arranged substantially parallel to each other and arranged to be driven in an alternating movement back and forth to cut the bread 4 into slices.
  • a bread press 6 is also provided, consisting of a blade exerting a pressure on the top of the bread to avoid its thrill during the cutting operation
  • On the side of the blade assembly 8 opposite the loading compartment 5 of the bread 4 is provided a compartment 9 for unloading bread 4 cut into slices.
  • the drive element 7 of the bread 4 is arranged to be moved in a translational movement parallel to the cutting table 3 and transversely to the blade assembly 8 between a first recoil position in which a bread 4 can be introduced in the loading compartment 5 and a second advancing position in which the bread driving element 7 is adjacent to the blade assembly 8 and the bread 4 cut into slices and placed in the unloading compartment 9 can be removed from the device 1.
  • the drive element 7 is moved by means of an electric motor 10 comprising a rotor and a stator, coupled to said drive element 7 by a jack 11 actuating an articulated arm 12 comprising a first element 12a articulated by a hinge or a ball joint to a second element 12b, a first end of the arm 12 being able to pivot around a pivot 13 and a second end of said br as 12 being connected to the drive element 7.
  • an electric motor 10 comprising a rotor and a stator, coupled to said drive element 7 by a jack 11 actuating an articulated arm 12 comprising a first element 12a articulated by a hinge or a ball joint to a second element 12b, a first end of the arm 12 being able to pivot around a pivot 13 and a second end of said br as 12 being connected to the drive element 7.
  • another means of moving the drive element 7 can be provided, for example a source or a reservoir of compressed air actuating for example a pneumatic cylinder.
  • the power supplied by the motor 10 coupled to the drive element 7 of the bread 4 during the operation of the device 1 is automatically regulated by a regulating means 14 as a function of the speed of said drive element 7, which is conditioned by the resistance that the bread 4 and the bread press 6 oppose to the assembly of blades 8 during the cutting operation of said bread.
  • the bread press 6 by exerting a pressure on said bread 4 increases the resistance which the latter opposes by itself to the set of blades 8.
  • the regulating means 14 is arranged to measure the speed of rotation of the rotor in the stator of the motor 10 to determine the speed of the translational movement of the drive element 7 of the bread 4 and is also arranged to compare the speed measured with a predetermined speed and to increase or decrease the power of the motor 10 when this measured speed is respectively lower or higher than the predetermined speed. If another means of moving the drive element 7 is used, such as a source or a reservoir of compressed air, it is the speed of movement of the drive element 7 itself which can be directly measured by the regulating means 14, for example by means of position sensors such as photoelectric cells arranged on the path of the drive element 7. Thus, whatever the type of bread cut, the speed of this cutting is continuously optimized by the device according to the invention.
  • This intensity peak corresponds to a predetermined value and can be measured and the current and therefore the power of the motor 10 can in reaction be greatly reduced to another predetermined value so that the crust of the bread is cut from optimally without crushing.
  • the regulating means 14 of the device 1 according to the invention is also arranged to reduce the intensity of the current consumed by the motor 10 to a first predetermined value when this intensity exceeds a second predetermined value.
  • a means of displacement other than the motor 10 such as a source or a reservoir of compressed air
  • the aforementioned intensity peak is replaced by a peak of air pressure used to move the drive element 7.
  • the regulated power is also in this case the air pressure in question.
  • the blade assembly 8 attacks the cut of the bread crumb 4. If the speed of movement of the drive element 7 and therefore of the bread cut 4 is then lower at a predetermined value, the regulating means 14 will increase the power of the motor 10 until this value is reached, so as to prevent too slow a speed leading to excessive friction of the blade assembly 8 on the crumb of the bread 4 and the subsequent appearance of a pilling of this crumb. If by chance, in the case for example of a very light sandwich bread, the predetermined value of the bread cutting speed was exceeded, the regulating means 14 would command a reduction in the power of the motor 10 to avoid any tearing crumb due to an excessive speed or acceleration of movement of the drive element 7.
  • the regulating means 14 is further arranged to cause an inversion of the direction of movement of the drive element 7 of the bread 4 when it reaches its first or its second position.
  • This reversal can be caused in several ways It can be controlled by at least one photoelectric cell (not shown) arranged to identify the arrival of the drive element 7 in its first or second position or alternatively by providing that the means regulator 14 is arranged to measure the number of revolutions made by the rotor of the motor 10 in its stator and to cause said inversion from one of the first or second positions of the drive element 7 when said number of revolutions reaches a predetermined value from the other of the first or second positions of the drive element 7.
  • the inversion in question can be caused from one of the first or second positions of the drive element 7 when the intensity of the current consumed by the motor 10 exceeds a predetermined threshold value appearing when the element stops drive 7 against a stop arranged at its first and or second positions.
  • the regulating means 14 may comprise a circuit for controlling the power supplied by the motor 10 controlled by an electronic chip programmed to, from a measurement by an ammeter of the intensity of the current consumed by the motor 10 and of the number of revolutions per unit time of the rotor of said motor 10 in its stator, indicated for example by means of a counting disc coupled to said rotor, calculating the speed and / or acceleration of the driving element 7 and control the aforementioned power control circuit.
  • the regulating means 14 is connected to the motor 10 by a first electric cable 15 transmitting the current intensity and motor speed information mentioned above and a second electric cable 16 supplying the motor 10 with electricity.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food-Manufacturing Devices (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)

Abstract

The device has an electrical motor (10) moving a bread driving unit (7) in translation, transversal to a set of blades (8), between a backward position in which the bread (4) is loaded in the device and a forward position in which the sliced bread is removed from the device. A regulation unit (14) automatically adjusts power supplied by the motor based on a speed/acceleration of the unit, during cutting operation.

Description

"Dispositif de découpe automatisée de pain en tranches" "Automated slicing device for bread"
La présente invention concerne un dispositif de découpe automatisée de pains en tranches. Des dispositifs de découpe automatisée de pains en tranches sont bien connus. On les rencontre dans la plupart des boulangeries artisanales et également en grandes surfaces. Ces dispositifs, ou trancheuses automatiques de pains, fonctionnent selon le principe suivant : L'utilisateur du dispositif y introduit le pain qu'il désire couper en tranches en le plaçant dans un compartiment disposé entre un élément d'entraînement du pain et un ensemble de lames parallèles destinées à trancher ledit pain. L'utilisateur met ensuite le dispositif en marche en enclenchant l'interrupteur prévu à cet effet, ce qui entraîne la mise en mouvement alternatif des lames et en mouvement de translation transversalement à la direction des lames de l'élément d'entraînement du pain. Le pain est dès lors déplacé par cet élément d'entraînement en direction des lames et la découpe commence lorsqu'il entre en contact avec ces dernières. L'utilisateur récupère son pain découpé en tranches dans un compartiment disposé du côté des lames opposé à celui où est disposé le compartiment de chargement du pain dans le dispositif. Il ne reste plus alors à cet utilisateur qu'à emballer le pain découpé. Dans les dispositifs traditionnels de tranchage automatique de pains, la puissance du moteur animant l'élément d'entraînement du pain est constante et par conséquent ne peut être adaptée au type de pain dont le tranchage est souhaité, en fonction de la vitesse de déplacement de l'élément d'entraînement du pain pendant l'opération de découpe. Ceci pose un problème quant à la qualité de la découpe du pain. En effet, dans le cas d'un pain à croûte souple et mie molle, une puissance trop élevée fournie par le moteur et donc une vitesse trop importante de l'élément d'entraînement du pain engendreront une pression trop forte sur le pain lors du début de sa découpe et dès lors un écrasement de ce dernier sur les lames ainsi qu'un déchirement de la mie en cours de découpe. La qualité de la découpe du pain sera dès lors pauvre puisque les tranches présenteront un aspect écrasé du côté de leur bord d'attaque par les lames ainsi que des déchirures de leur mie. Il en va de même avec un pain présentant une croûte dure et une mie molle car dans ce cas, une puissance trop élevée du moteur et donc une vitesse trop importante de l'élément d'entraînement du pain lors du début de la découpe entraîneront également un excès de pression sur la croûte lors de son attaque par les lames et par conséquent une brisure de la croûte contre les lames et un émiettement consécutif de cette dernière, suivi d'un déchirement de la mie comme exposé ci-dessus en cours de découpe. A l'opposé, dans le cas d'un pain à croûte et mie fermes, une puissance trop faible de moteur et donc une vitesse trop lente du dispositif de pousse du pain pourra avoir pour conséquence un défaut de pression sur le pain en cours de découpe et dès lors un frottement des lames de la machine trop prolongé sur la mie du pain qui entraînera un émiettement et un boulochage de cette dernière par les lames. Ceci sera également le cas lorsqu'un pain à croûte dure et mie ferme est découpé puisque la découpe de la croûte en début de découpe sera elle correcte mais celle de la mie par la suite sera également trop lente et pourra donc entraîner l'apparition des émiettement et boulochage susmentionnées. On a tenté de résoudre ce problème d'inadaptation de la puissance du moteur animant l'élément d'entraînement du pain à la nature de celui-ci en munissant l'élément d'entraînement d'un système de contrôle de la puissance de son moteur et donc de la vitesse de l'élément d'entraînement du pain et consécutivement de la pression qu'il exerce sur le pain en cours de découpe. Un tel système peut consister en un levier permettant à l'utilisateur du dispositif de commander manuellement l'élément d'entraînement du pain dans la machine ou en une commande électrique permettent d'augmenter ou de réduire la puissance du moteur animant l'élément d'entraînement durant la découpe dudit pain. Néanmoins, ces systèmes posent un autre problème puisqu'ils demandent toujours une intervention de l'utilisateur pour les commander et par conséquent d'une part une certaine expérience de celui-ci en matière de types de pains et de conditions de découpe optimales associées à chacun de ces types et d'autre part une mobilisation de l'utilisateur pendant tout le temps de découpe du pain pour commander le système de contrôle de l'élément d'entraînement de ce pain dans le dispositif. On a également tenté de résoudre ce problème en proposant selon les enseignements du brevet US 3 875 840, un système de contrôle de la puissance d'un premier moteur actionnant l'élément d'entraînement du pain, comprenant un second moteur comprenant au moins un ressort ou un contrepoids pouvant coulisser sur un guide inclinable, de sorte à s'opposer à l'action du premier en fonction de la force exercée par l'élément d'entraînement du pain sur les lames de découpe de ce dernier et donc de la vitesse et/ou de l'accélération dudit élément d'entraînement. Un tel système est cependant mécaniquement complexe dans sa conception et peu fiable et précis dans son fonctionnement. La présente invention résout les problème susmentionnés et pallie les inconvénients qui y sont associés en proposant un dispositif de découpe automatisée de pains en tranches dans lequel la vitesse de l'élément d'entraînement du pain est adaptée de manière automatique au type de pain à découper et en particulier à la dureté de sa croûte et la fermeté de sa mie, et ce tout au long de l'opération de découpe. Dès lors, l'invention consiste en un dispositif de découpe automatisée d'un pain en tranches comprenant un élément d'entraînement du pain agencé pour être déplacé au moyen d'un moyen de déplacement couplé audit élément entre une première position de recul dans laquelle le pain à découper peut être chargé dans le dispositif et une seconde position d'avancement dans laquelle le pain découpé peut être retiré du dispositif, celui-ci comprenant en outre un ensemble de lames de découpe du pain disposées sensiblement parallèlement les unes aux autres et agencées pour être animées d'un mouvement alternatif de va-et-vient, l'élément d'entraînement du pain étant agencé pour, lorsque le dispositif est en fonctionnement, entraîner le pain dans un mouvement de translation vers et au travers de l'ensemble de lames entre la première et la seconde position dudit élément, le dispositif comprenant encore un moyen de régulation agencé pour réguler automatiquement la puissance fournie par le moyen de déplacement en fonction de la vitesse et/ou de l'accélération du mouvement de translation de l'élément d'entraînement du pain pendant l'opération de découpe de celui-ci, en comparant la vitesse de déplacement de l'élément d'entraînement à une vitesse prédéterminée et respectivement augmentant ou diminuant la puissance du moyen de déplacement dudit élément d'entraînement lorsque ladite vitesse de déplacement est respectivement inférieure ou supérieure à la vitesse prédéterminée. Grâce au moyen de régulation automatique de puissance du moteur en fonction de la vitesse et/ou de l'accélération de l'élément d'entraînement du pain du dispositif selon l'invention par comparaison de la vitesse de déplacement de l'élément d'entraînement à une vitesse prédéterminée et ajustage de la puissance du moyen de déplacement en fonction de la différence entre la vitesse de déplacement en question et la vitesse prédéterminée, la découpe d'un pain est toujours optimisée selon le type de pain en question. En effet, lorsque le pain oppose une résistance importante aux lames en début de découpe, c'est à dire lorsque la croûte du pain est dure, la vitesse de déplacement de l'élément d'entraînement sera rapidement et fortement réduite et cette décélération forte et rapide sera repérée par le moyen de régulation qui diminuera la puissance fournie par le moyen de déplacement de l'élément d'entraînement et la croûte sera dès lors découpée sans qu'elle ne soit brisée par écrasement du pain sur les lames en raison d'une trop grande vitesse et/ou accélération de déplacement de l'élément d'entraînement du pain. Une fois l'épaisseur de la croûte franchie par les lames et la découpe de la mie entamée, la résistance du pain aux lames diminue et la vitesse de déplacement de l'élément d'entraînement du pain augmente. Si cette vitesse ne dépasse pas une valeur seuil prédéterminée, la puissance fournie par le moyen de déplacement de l'élément d'entraînement est augmentée par paliers jusqu'à ce que ladite valeur seuil soit atteinte. Ainsi, quelle que soit la consistance molle ou ferme du pain, la vitesse et/ou l'accélération de déplacement de l'élément d'entraînement dudit pain sont contrôlées pour éviter un déchirement de la mie en raison d'une vitesse ou une accélération excessive ou au contraire l'apparition d'un boulochage de cette mie de par un déplacement trop lent de l'élément d'entraînement du pain et au frottement consécutif excessif des lames sur la mie. Dès lors, plus aucun phénomène d'écrasement de croûte ni de déchirure de mie n'est observé grâce au dispositif selon l'invention. L'invention va à présent être décrite plus en détails au moyen d'un exemple illustrant un mode de réalisation non limitatif de sa portée et en référence à la figure 1 jointe représentant une vue schématique en coupe transversale d'un dispositif selon l'invention. Le dispositif 1 selon l'invention comporte un châssis 2 comprenant une table de découpe 3 d'un pain 4 que l'on dispose dans un compartiment de chargement 5 du dispositif. Celui-ci comprend encore un élément d'entraînement 7 du pain 4 et un ensemble de lames 8 disposées sensiblement parallèlement les unes aux autres et agencées pour être animées d'un mouvement alternatif de va-et-vient pour découper le pain 4 en tranches. Un presse pain 6 est également prévu, constitué d'une lame exerçant une pression sur le dessus du pain pour éviter son tressaillement pendant l'opération de découpe Du côté de l'ensemble de lames 8 opposé au compartiment de chargement 5 du pain 4 est prévu un compartiment 9 de déchargement du pain 4 coupé en tranches. L'élément d'entraînement 7 du pain 4 est agencé pour être déplacé selon un mouvement de translation parallèlement à la table de découpe 3 et transversalement à l'ensemble de lames 8 entre une première position de recul dans laquelle un pain 4 peut être introduit dans le compartiment de chargement 5 et une seconde position d'avancement dans laquelle l'élément d'entraînement 7 du pain est adjacent à l'ensemble de lames 8 et le pain 4 coupé en tranches et disposé dans le compartiment 9 de déchargement peut être retiré du dispositif 1. Le déplacement de l'élément d'entraînement 7 est effectué au moyen d'un moteur électrique 10 comprenant un rotor et un stator, couplé audit élément d'entraînement 7 par un vérin 11 actionnant un bras articulé 12 comprenant un premier élément 12a articulé par une charnière ou une rotule à un second élément 12b, une première extrémité du bras 12 pouvant pivoter autour d'un pivot 13 et une seconde extrémité dudit bras 12 étant connectée à l'élément d'entraînement 7. Alternativement au moteur électrique 10, un autre moyen de déplacement de l'élément d'entraînement 7 peut être prévu, par exemple une source ou un réservoir d'air comprimé actionnant par exemple un vérin pneumatique. La puissance fournie par le moteur 10 couplé à l'élément d'entraînement 7 du pain 4 pendant le fonctionnement du dispositif 1 est régulée automatiquement par un moyen de régulation 14 en fonction de la vitesse dudit élément d'entraînement 7, laquelle est conditionnée par la résistance que le pain 4 et le presse pain 6 opposent à l'ensemble de lames 8 pendant l'opération de découpe dudit pain. En effet, le presse pain 6 en exerçant une pression sur ledit pain 4 augmente la résistance que celui-ci oppose par lui-même à l'ensemble de lames 8. Le moyen de régulation 14 est agencé pour mesurer la vitesse de rotation du rotor dans le stator du moteur 10 pour déterminer la vitesse du mouvement de translation de l'élément d'entraînement 7 du pain 4 et est également agencé pour comparer la vitesse mesurée à une vitesse prédéterminée et pour augmenter ou diminuer la puissance du moteur 10 lorsque cette vitesse mesurée est respectivement inférieure ou supérieure à la vitesse prédéterminée. Si un autre moyen de déplacement de l'élément d'entraînement 7 est utilisé, tel qu'une source ou un réservoir d'air comprimé, c'est la vitesse de déplacement de l'élément d'entraînement 7 elle-même qui pourra être directement mesurée par le moyen de régulation 14, par exemple grâce à des capteurs de position tels que des cellules photoélectriques disposées sur le parcours de l'élément d'entraînement 7. Ainsi, quel que soit le type de pain découpé, la vitesse de cette découpe est en permanence optimisée par le dispositif selon l'invention. Lorsqu'un pain à croûte dure ou au contraire très souple est mis à découper dans le dispositif selon l'invention et que la croûte atteint l'ensemble de lames 8, une résistance très importante au mouvement de translation de l'élément d'entraînement 7 du pain est opposée par la croûte à la découpe par l'ensemble de lames B, soit en raison de la dureté de ladite croûte ou de la compression du pain à croûte souple. Même dans le cas d'un pain d'un autre type, une telle résistance peut être provoquée, principalement alors par la pression exercée par le presse pain sur ledit pain. Cette résistance entraîne un pic d'intensité du courant consommé par le moteur 10 qui indique que la puissance de ce moteur et donc le courant consommé doivent être réduits pour éviter que la croûte du pain ne soit écrasée contre les lames en raison d'une pression trop forte exercée par l'élément d'entraînement 7 sur le pain. Ce pic d'intensité correspond à une valeur prédéterminée et peut être mesuré et le courant ainsi donc que la puissance du moteur 10 peuvent en réaction être fortement réduits jusqu'à une autre valeur prédéterminée pour que la découpe de la croûte du pain soit effectuée de manière optimale sans écrasement. C'est pourquoi, le moyen de régulation 14 du dispositif 1 selon l'invention est également agencé pour diminuer l'intensité du courant consommé par le moteur 10 jusqu'à une première valeur prédéterminée lorsque cette intensité dépasse une seconde valeur prédéterminée. Dans le cas où un autre moyen de déplacement que le moteur 10 est utilisé, tel qu'une source ou un réservoir d'air comprimé, le pic d'intensité susmentionné est remplacé par un pic de pression de l'air utilisé pour déplacer l'élément d'entraînement 7. La puissance régulée est également dans ce cas la pression de l'air en question. Une fois la découpe de la croûte du pain effectuée, l'ensemble de lames 8 attaque la découpe de la mie du pain 4. Si la vitesse de déplacement de l'élément d'entraînement 7 et donc de découpe du pain 4 est alors inférieure à une valeur prédéterminée, le moyen de régulation 14 augmentera la puissance du moteur 10 jusqu'à ce que cette valeur soit atteinte, de sorte à éviter qu'une vitesse trop lente ne conduise à un frottement excessif de l'ensemble de lames 8 sur la mie du pain 4 et à l'apparition consécutive d'un boulochage de cette mie. Si d'aventure, dans le cas par exemple d'un pain à mie très légère, la valeur prédéterminée de la vitesse de découpe du pain était dépassée, le moyen de régulation 14 commanderait une diminution de la puissance du moteur 10 pour éviter tout déchirement de la mie dû à une vitesse ou à une accélération de déplacement de l'élément d'entraînement 7 excessive. Le moyen de régulation 14 est de plus agencé pour provoquer une inversion du sens de déplacement de l'élément d'entraînement 7 du pain 4 lorsqu'il atteint sa première ou sa seconde position. Cette inversion peut être provoquée de plusieurs manières Elle peut être commandée par au moins une cellule photoélectrique (non illustrée) agencée pour repérer l'arrivée de l'élément d'entraînement 7 dans sa première ou sa seconde position ou alternativement en prévoyant que le moyen de régulation 14 soit agencé pour mesurer le nombre de tours effectués par le rotor du moteur 10 dans son stator et pour provoquer ladite inversion depuis l'une des première ou seconde positions de l'élément d'entraînement 7 lorsque ledit nombre de tours atteint une valeur prédéterminée depuis l'autre des première ou seconde positions de l'élément d'entraînement 7. Alternativement encore, ou concomitamment, l'inversion en question peut être provoquée depuis l'une des première ou seconde positions de l'élément d'entraînement 7 lorsque l'intensité du courant consommé par le moteur 10 dépasse une valeur seuil prédéterminée apparaissant lors de la butée de l'élément d'entraînement 7 contre un arrêt disposé au niveau de sa première et ou seconde positions. En pratique, le moyen de régulation 14 pourra comprendre un circuit de contrôle de la puissance fournie par le moteur 10 commandé par une puce électronique programmée pour, à partir d'une mesure par un ampèremètre de l'intensité du courant consommé par le moteur 10 et du nombre de tours par unité de temps du rotor dudit moteur 10 dans son stator, indiqué par exemple au moyen d'un disque de comptage couplé audit rotor, calculer la vitesse et/ou l'accélération de l'élément d'entraînement 7 et commander le circuit de contrôle de puissance susmentionné. Le moyen de régulation 14 est relié au moteur 10 par un premier câble électrique 15 transmettant les informations d'intensité de courant et de vitesse de moteur mentionnées ci-dessus et un second câble électrique 16 alimentant le moteur 10 en électricité. The present invention relates to an automated cutting device for sliced breads. Automatic devices for cutting slices of bread are well known. They are found in most artisan bakeries and also in supermarkets. These devices, or automatic bread slicers, operate according to the following principle: The user of the device introduces the bread he wishes to cut into slices by placing it in a compartment disposed between a bread driving element and a set of parallel blades for slicing said bread. The user then switches on the device by activating the switch provided for this purpose, which causes the blades to alternate and to move in translation transversely to the direction of the blades of the bread drive element. The bread is therefore moved by this drive element towards the blades and the cutting begins when it comes into contact with the latter. The user collects his bread cut into slices in a compartment arranged on the side of the blades opposite to that where the bread loading compartment is arranged in the device. It then remains for this user to pack the cut bread. In traditional automatic bread slicing devices, the power of the motor driving the bread drive element is constant and therefore cannot be adapted to the type of bread whose slicing is desired, depending on the speed of movement of the bread driving element during the operation of cutting. This poses a problem with the quality of the bread cut. In fact, in the case of a bread with a soft, soft crust, a too high power supplied by the motor and therefore an excessively high speed of the bread driving element will cause too much pressure on the bread during beginning of its cutting and therefore crushing of the latter on the blades and a tearing of the crumb during cutting. The quality of the bread cut will therefore be poor since the slices will have a crushed appearance on the side of their leading edge by the blades as well as tears in their crumbs. The same goes for a bread with a hard crust and a soft crumb because in this case, too high a motor power and therefore too high a speed of the bread driving element during the start of cutting will also lead an excess of pressure on the crust during its attack by the blades and consequently a breakage of the crust against the blades and a subsequent crumbling of the latter, followed by a tearing of the crumb as exposed above during cutting . Conversely, in the case of a firm crust and crumb bread, too low a motor power and therefore a too slow speed of the bread pushing device could result in a pressure defect on the bread being cutting and therefore too long friction of the machine blades on the bread crumb which will cause crumbling and pilling of the latter by the blades. This will also be the case when a hard crust and firm crumb bread is cut since the crust cutting at the start of cutting will be correct but that of the crumb thereafter will also be too slow and could therefore lead to the appearance of crumbling and pilling above. Attempts have been made to resolve this problem of the power of the motor driving the bread drive element being unsuitable for the nature of the bread by providing the drive element with a sound power control system. motor and therefore the speed of the bread driving element and consequently the pressure it exerts on the bread being cut. Such a system may consist of a lever allowing the user of the device to manually control the bread driving element in the machine or an electric control making it possible to increase or reduce the power of the motor driving the element d training during the cutting of said bread. However, these systems pose another problem since they always require user intervention to control them and therefore, on the one hand, some experience of the latter in terms of types of bread and optimal cutting conditions associated with each of these types and on the other hand a mobilization of the user during the whole time of cutting the bread to control the control system of the drive element of this bread in the device. We have also tried to solve this problem by proposing, according to the teachings of US Pat. No. 3,875,840, a system for controlling the power of a first motor actuating the bread driving element, comprising a second motor comprising at least one spring or a counterweight that can slide on a tilting guide, so as to oppose the action of the first depending on the force exerted by the bread driving element on the cutting blades of the latter and therefore the speed and / or acceleration of said drive element. Such a system is however mechanically complex in its design and unreliable and precise in its operation. The present invention solves the aforementioned problem and overcomes the disadvantages associated therewith by providing an automated slicing device for sliced breads in which the speed of the bread driving element is automatically adapted to the type of bread to be cut. and in particular the hardness of its crust and the firmness of its crumb, throughout the cutting operation. Therefore, the invention consists of an automated device for cutting a sliced bread comprising a bread drive element arranged to be moved by means of a displacement means coupled to said element between a first recoil position in which the bread to be cut can be loaded into the device and a second advance position in which the cut bread can be removed from the device, the latter further comprising a set of bread cutting blades arranged substantially parallel to each other and arranged to be reciprocated back and forth, the bread driving element being arranged so that, when the device is in operation, driving the bread in a translational movement towards and through the set of blades between the first and second position of said element, the device further comprising a regulating means arranged to regulate automatically the power supplied by the displacement means as a function of the speed and / or of the acceleration of the translational movement of the bread driving element during the cutting operation thereof, by comparing the displacement speed of the driving element at a predetermined speed and respectively increasing or decreasing the power of the moving means of said driving element when said moving speed is respectively lower or higher than the predetermined speed. By means of automatic engine power regulation as a function of the speed and / or acceleration of the bread drive element of the device according to the invention by comparison of the speed of movement of the element training at a predetermined speed and adjusting the power of the displacement means as a function of the difference between the displacement speed in question and the predetermined speed, the cutting of a bread is always optimized according to the type of bread in question. Indeed, when the bread opposes a significant resistance to the blades at the start of cutting, i.e. when the crust of the bread is hard, the speed of movement of the drive element will be quickly and greatly reduced and this strong and rapid deceleration will be identified by means of regulation which will reduce the power supplied by the means of displacement of the drive element and the crust will therefore be cut without it being broken by crushing the bread on the blades due to too high a speed and / or acceleration of movement of the bread driving element. Once the thickness of the crust has been crossed by the blades and the cutting of the crumb started, the resistance of the bread to the blades decreases and the speed of movement of the bread driving element increases. If this speed does not exceed a predetermined threshold value, the power supplied by the means for moving the drive element is increased in stages until said threshold value is reached. Thus, whatever the soft or firm consistency of the bread, the speed and / or the acceleration of movement of the drive element of said bread are controlled to avoid tearing of the crumb due to a speed or an acceleration excessive or on the contrary the appearance of pilling of this crumb by a too slow movement of the bread driving element and excessive excessive friction of the blades on the crumb. Consequently, no more phenomenon of crust crushing or crumb tearing is observed using the device according to the invention. The invention will now be described in more detail by means of an example illustrating an embodiment without limitation of its scope and with reference to the attached FIG. 1 representing a schematic view in cross section of a device according to the invention . The device 1 according to the invention comprises a frame 2 comprising a cutting table 3 for a loaf 4 which is placed in a loading compartment 5 of the device. This further comprises a bread driving element 7 and a set of blades 8 arranged substantially parallel to each other and arranged to be driven in an alternating movement back and forth to cut the bread 4 into slices. A bread press 6 is also provided, consisting of a blade exerting a pressure on the top of the bread to avoid its thrill during the cutting operation On the side of the blade assembly 8 opposite the loading compartment 5 of the bread 4 is provided a compartment 9 for unloading bread 4 cut into slices. The drive element 7 of the bread 4 is arranged to be moved in a translational movement parallel to the cutting table 3 and transversely to the blade assembly 8 between a first recoil position in which a bread 4 can be introduced in the loading compartment 5 and a second advancing position in which the bread driving element 7 is adjacent to the blade assembly 8 and the bread 4 cut into slices and placed in the unloading compartment 9 can be removed from the device 1. The drive element 7 is moved by means of an electric motor 10 comprising a rotor and a stator, coupled to said drive element 7 by a jack 11 actuating an articulated arm 12 comprising a first element 12a articulated by a hinge or a ball joint to a second element 12b, a first end of the arm 12 being able to pivot around a pivot 13 and a second end of said br as 12 being connected to the drive element 7. Alternatively to the electric motor 10, another means of moving the drive element 7 can be provided, for example a source or a reservoir of compressed air actuating for example a pneumatic cylinder. The power supplied by the motor 10 coupled to the drive element 7 of the bread 4 during the operation of the device 1 is automatically regulated by a regulating means 14 as a function of the speed of said drive element 7, which is conditioned by the resistance that the bread 4 and the bread press 6 oppose to the assembly of blades 8 during the cutting operation of said bread. Indeed, the bread press 6 by exerting a pressure on said bread 4 increases the resistance which the latter opposes by itself to the set of blades 8. The regulating means 14 is arranged to measure the speed of rotation of the rotor in the stator of the motor 10 to determine the speed of the translational movement of the drive element 7 of the bread 4 and is also arranged to compare the speed measured with a predetermined speed and to increase or decrease the power of the motor 10 when this measured speed is respectively lower or higher than the predetermined speed. If another means of moving the drive element 7 is used, such as a source or a reservoir of compressed air, it is the speed of movement of the drive element 7 itself which can be directly measured by the regulating means 14, for example by means of position sensors such as photoelectric cells arranged on the path of the drive element 7. Thus, whatever the type of bread cut, the speed of this cutting is continuously optimized by the device according to the invention. When a bread with a hard crust or, on the contrary, very flexible, is cut into the device according to the invention and the crust reaches the set of blades 8, a very high resistance to the translational movement of the drive element 7 of the bread is opposed by the crust to the cutting by the set of blades B, either because of the hardness of said crust or the compression of the bread with flexible crust. Even in the case of a bread of another type, such resistance can be caused, mainly then by the pressure exerted by the bread press on said bread. This resistance causes a peak in the intensity of the current consumed by the motor 10 which indicates that the power of this motor and therefore the current consumed must be reduced to prevent the crust of the bread from being crushed against the blades due to a excessive pressure exerted by the drive element 7 on the bread. This intensity peak corresponds to a predetermined value and can be measured and the current and therefore the power of the motor 10 can in reaction be greatly reduced to another predetermined value so that the crust of the bread is cut from optimally without crushing. This is why, the regulating means 14 of the device 1 according to the invention is also arranged to reduce the intensity of the current consumed by the motor 10 to a first predetermined value when this intensity exceeds a second predetermined value. In the case where a means of displacement other than the motor 10 is used, such as a source or a reservoir of compressed air, the aforementioned intensity peak is replaced by a peak of air pressure used to move the drive element 7. The regulated power is also in this case the air pressure in question. Once the crust of the bread has been cut, the blade assembly 8 attacks the cut of the bread crumb 4. If the speed of movement of the drive element 7 and therefore of the bread cut 4 is then lower at a predetermined value, the regulating means 14 will increase the power of the motor 10 until this value is reached, so as to prevent too slow a speed leading to excessive friction of the blade assembly 8 on the crumb of the bread 4 and the subsequent appearance of a pilling of this crumb. If by chance, in the case for example of a very light sandwich bread, the predetermined value of the bread cutting speed was exceeded, the regulating means 14 would command a reduction in the power of the motor 10 to avoid any tearing crumb due to an excessive speed or acceleration of movement of the drive element 7. The regulating means 14 is further arranged to cause an inversion of the direction of movement of the drive element 7 of the bread 4 when it reaches its first or its second position. This reversal can be caused in several ways It can be controlled by at least one photoelectric cell (not shown) arranged to identify the arrival of the drive element 7 in its first or second position or alternatively by providing that the means regulator 14 is arranged to measure the number of revolutions made by the rotor of the motor 10 in its stator and to cause said inversion from one of the first or second positions of the drive element 7 when said number of revolutions reaches a predetermined value from the other of the first or second positions of the drive element 7. Alternatively alternatively, or concomitantly, the inversion in question can be caused from one of the first or second positions of the drive element 7 when the intensity of the current consumed by the motor 10 exceeds a predetermined threshold value appearing when the element stops drive 7 against a stop arranged at its first and or second positions. In practice, the regulating means 14 may comprise a circuit for controlling the power supplied by the motor 10 controlled by an electronic chip programmed to, from a measurement by an ammeter of the intensity of the current consumed by the motor 10 and of the number of revolutions per unit time of the rotor of said motor 10 in its stator, indicated for example by means of a counting disc coupled to said rotor, calculating the speed and / or acceleration of the driving element 7 and control the aforementioned power control circuit. The regulating means 14 is connected to the motor 10 by a first electric cable 15 transmitting the current intensity and motor speed information mentioned above and a second electric cable 16 supplying the motor 10 with electricity.

Claims

REVENDICATIONS
1. Dispositif 1 de découpe automatisée d'un pain 4 en tranches comprenant un élément d'entraînement 7 du pain 4 et un ensemble de lames 8 de découpe du pain 4 disposées sensiblement parallèlement les unes aux autres et agencées pour être animées d'un mouvement alternatif de va-et-vient, l'élément d'entraînement 7 du pain 4 étant agencé pour être déplacé selon un mouvement de translation transversalement à l'ensemble de lames 8 par un moyen de déplacement 10 couplé audit élément d'entraînement 7, entre une première position de recul dans laquelle le pain 4 à découper peut être chargé dans le dispositif 1 et une seconde position d'avancement dans laquelle l'élément d'entraînement 7 du pain 4 est adjacent à l'ensemble de lames 8 et le pain découpé peut être retiré du dispositif 1 , celui-ci le comprend en outre un moyen de régulation 14 agencé pour réguler automatiquement la puissance fournie par le moyen de déplacement 10 en fonction de la vitesse et/ou de l'accélération du mouvement de translation de l'élément d'entraînement 7 du pain 4 pendant l'opération de découpe de celui-ci, caractérisé en ce que ledit moyen de régulation 14 est agencé pour comparer la vitesse de déplacement de l'élément d'entraînement 7 à une vitesse prédéterminée et pour respectivement augmenter ou diminuer la puissance du moyen de déplacement 10 dudit élément d'entraînement 7 lorsque ladite vitesse de déplacement est respectivement inférieure ou supérieure à la vitesse prédéterminée. 1. Device 1 for automatically cutting a sliced loaf 4 comprising a drive element 7 for the loaf 4 and a set of blades 8 for slicing the loaf 4 arranged substantially parallel to one another and arranged to be driven by a reciprocating back and forth movement, the drive element 7 of the bread 4 being arranged to be moved in a translational movement transversely to the blade assembly 8 by a displacement means 10 coupled to said drive element 7 , between a first retreating position in which the bread 4 to be cut can be loaded into the device 1 and a second advancing position in which the drive element 7 of the bread 4 is adjacent to the blade assembly 8 and the cut bread can be removed from the device 1, the latter further comprises a regulating means 14 arranged to automatically regulate the power supplied by the displacement means 10 as a function of the speed e and / or the acceleration of the translational movement of the drive element 7 of the bread 4 during the cutting operation thereof, characterized in that said regulating means 14 is arranged to compare the speed of displacement of the drive element 7 at a predetermined speed and for respectively increasing or decreasing the power of the displacement means 10 of said drive element 7 when said displacement speed is respectively lower or greater than the predetermined speed.
2. Dispositif 1 selon la revendication 1, caractérisé en ce que ledit moyen de déplacement 10 est un moteur électrique comprenant un rotor et un stator et en ce que ledit moyen de régulation 14 est agencé pour mesurer la vitesse de rotation du rotor dans le stator pour déterminer la vitesse du mouvement de translation de l'élément d'entraînement 7 du pain 4. 2. Device 1 according to claim 1, characterized in that said displacement means 10 is an electric motor comprising a rotor and a stator and in that said regulating means 14 is arranged to measure the speed of rotation of the rotor in the stator to determine the speed of the translational movement of the drive element 7 of the bread 4.
3. Dispositif 1 selon la revendication 2, caractérisé en ce que ledit moyen de régulation 14 est agencé pour diminuer l'intensité du courant consommé par ledit moteur 10 jusqu'à, une première valeur prédéterminée lorsque cette intensité dépasse une seconde valeur prédéterminée. 3. Device 1 according to claim 2, characterized in that said regulating means 14 is arranged to decrease the intensity of the current consumed by said motor 10 to a first predetermined value when this intensity exceeds a second predetermined value.
4. Dispositif 1 selon l'une quelconque des revendications 2 ou 3, caractérisé en ce que ledit moyen de régulation 14 est agencé pour provoquer une inversion du sens de déplacement de l'élément d'entraînement 7 du pain 4 lorsqu'il atteint sa première ou sa seconde position. 4. Device 1 according to any one of claims 2 or 3, characterized in that said regulating means 14 is arranged to cause an inversion of the direction of movement of the drive element 7 of the bread 4 when it reaches its first or second position.
5. Dispositif 1 selon la revendication 4 caractérisé en ce que ladite inversion est commandée par au moins une cellule photoélectrique agencée pour repérer l'arrivée de l'élément d'entraînement 7 dans sa première ou sa seconde position. 5. Device 1 according to claim 4 characterized in that said reversal is controlled by at least one photoelectric cell arranged to identify the arrival of the drive element 7 in its first or second position.
6. Dispositif 1 selon la revendication 4 caractérisé en ce que ledit moyen de régulation 14 est agencé pour mesurer le nombre de tours effectués par le rotor du moteur 10 dans son stator et pour provoquer ladite inversion depuis l'une des première ou seconde positions de l'élément d'entraînement 7 lorsque ledit nombre de tours atteint une valeur prédéterminée depuis l'autre des première ou seconde positions de l'élément d'entraînement 7. 6. Device 1 according to claim 4 characterized in that said regulating means 14 is arranged to measure the number of revolutions made by the rotor of the motor 10 in its stator and to cause said inversion from one of the first or second positions of the drive element 7 when said number of turns reaches a predetermined value from the other of the first or second positions of the drive element 7.
7. Dispositif 1 selon la revendication 4, caractérisé en ce que ladite inversion est provoquée depuis l'une des première ou seconde positions de l'élément d'entraînement 7 lorsque l'intensité du courant consommé par le moteur 10 dépasse une valeur seuil prédéterminée. 7. Device 1 according to claim 4, characterized in that said inversion is caused from one of the first or second positions of the drive element 7 when the intensity of the current consumed by the motor 10 exceeds a predetermined threshold value .
8. Dispositif 1 selon l'une quelconque des revendications 2 à 7, caractérisé en ce que le moteur 10 est couplé à l'élément d'entraînement 7 par l'intermédiaire d'un vérin 11 et d'un bras articulé 12. 8. Device 1 according to any one of claims 2 to 7, characterized in that the motor 10 is coupled to the drive element 7 via a jack 11 and an articulated arm 12.
9. Dispositif 1 selon la revendication 1 caractérisé en ce que ledit moyen de déplacement 10 est une source ou un réservoir d'air comprimé. 9. Device 1 according to claim 1 characterized in that said displacement means 10 is a source or a reservoir of compressed air.
EP20040761500 2003-10-02 2004-10-04 Automatic bread slicing machine Expired - Lifetime EP1667824B1 (en)

Priority Applications (1)

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EP20040761500 EP1667824B1 (en) 2003-10-02 2004-10-04 Automatic bread slicing machine

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Application Number Priority Date Filing Date Title
EP20030447243 EP1520665A1 (en) 2003-10-02 2003-10-02 Automatic bread slicing machine
EP20040761500 EP1667824B1 (en) 2003-10-02 2004-10-04 Automatic bread slicing machine
PCT/BE2004/000139 WO2005030445A1 (en) 2003-10-02 2004-10-04 Device for cutting bread into slices in an automated manner

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EP1667824A1 true EP1667824A1 (en) 2006-06-14
EP1667824B1 EP1667824B1 (en) 2007-11-07

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EP20040761500 Expired - Lifetime EP1667824B1 (en) 2003-10-02 2004-10-04 Automatic bread slicing machine

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AT (1) ATE377490T1 (en)
DE (1) DE602004009946T2 (en)
WO (1) WO2005030445A1 (en)

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DE102011109997A1 (en) * 2011-08-11 2013-02-14 S.A. Jac N.V. Slicer
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WO2005030445A1 (en) 2005-04-07
EP1520665A1 (en) 2005-04-06
EP1667824B1 (en) 2007-11-07
DE602004009946T2 (en) 2008-08-21
ATE377490T1 (en) 2007-11-15
DE602004009946D1 (en) 2007-12-20
US20110056352A1 (en) 2011-03-10

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