EP2801455A1 - Machine for automatically cutting a loaf - Google Patents

Machine for automatically cutting a loaf Download PDF

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Publication number
EP2801455A1
EP2801455A1 EP14167454.9A EP14167454A EP2801455A1 EP 2801455 A1 EP2801455 A1 EP 2801455A1 EP 14167454 A EP14167454 A EP 14167454A EP 2801455 A1 EP2801455 A1 EP 2801455A1
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EP
European Patent Office
Prior art keywords
bread
holding plate
cutting
compartment
blades
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
EP14167454.9A
Other languages
German (de)
French (fr)
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EP2801455B1 (en
Inventor
Baudouin Van Cauwenberghe
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Jac SA
Original Assignee
Jac SA
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Publication date
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Publication of EP2801455A1 publication Critical patent/EP2801455A1/en
Application granted granted Critical
Publication of EP2801455B1 publication Critical patent/EP2801455B1/en
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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
    • B26D7/27—Means for performing other operations combined with cutting
    • B26D7/32—Means for performing other operations combined with cutting for conveying or stacking cut product
    • 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
    • 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

Definitions

  • the present invention relates to an automated cutting device sliced breads.
  • Automated cutting devices for sliced breads are well known. They are found in most bakeries and also in supermarkets. These devices or automatic bread slicers operate according to the following principle: the user of the device introduces bread he wants to slice by placing it in a loading compartment. This compartment is traditionally arranged between a bread pusher and a set of parallel blades for slicing said bread. The user then starts the device by switching on the switch provided for this purpose. This causes the reciprocating movement of the blades back and forth and in a translation movement transversely to the direction of the blades of the pusher. The bread is, therefore, moved by this pusher towards the blades and cutting begins when it comes in contact with them. The user retrieves his sliced bread in an unloading compartment disposed on the side of the blades opposite to that where the bread loading compartment is placed in the device. It only remains for this user to pack the cut bread.
  • a problem with this type of device is that slices of bread tend, during its cutting and even more once it is completed, to deviate from each other, so that it is then difficult for the user to collect them in order to proceed with the packaging of the cut bread.
  • This problem forces the user to watch for the sliced portion of the bread which, during cutting, emerges from all the blades in the unloading compartment and to manually grasp this sliced portion by its ends on either side of the set of slices to prevent them from deviating from one another until the end of the cutting operation.
  • Such manipulation therefore requires the user to focus his attention on the cutting operation for its duration, to lean forward to see the portion of the bread to be grasped, and to remain in this uncomfortable position until the end of the cutting operation.
  • the automated slice bread cutters are preferably each day provided with covers for covering the bread discharge compartment and arranged in such a way that that cutting is interrupted as soon as this lid is no longer closed.
  • covers for covering the bread discharge compartment and arranged in such a way that that cutting is interrupted as soon as this lid is no longer closed.
  • Another system has also been proposed, consisting of a curtain of rigid rods suspended from a rail and being able to move freely perpendicular thereto.
  • a curtain is arranged vertically in the bread discharge compartment, parallel to all the blades and at a distance from it.
  • the distance between the curtain of rigid rods and all blades of the cutting device being fixed this distance may be excessive to properly retain a small cut bread, or, on the contrary, insufficient to properly retain a bread large size.
  • the curtain rods are raised by the passage of the bread, they have their points towards the user, which may constitute a danger of injury, especially again for children.
  • the present invention solves the aforementioned problems by providing a device for automatically cutting a sliced bread comprising a frame, a loading compartment in the device of a bread to be cut and an unloading compartment thereof, each comprising a substantially flat base.
  • This device comprises a set of bread cutting blades arranged substantially parallel to each other between said loading and unloading compartments and a pusher arranged to be moved in the load compartment between a first position, in which a bread can be introduced. in this compartment, and a second position adjacent to all the blades, in which the cut bread can be removed from the compartment of unloading.
  • the bread can move in a cutting direction through all the blades during the cutting of the bread.
  • This device further comprises at least one holding plate, fixed on a movable support, which is driven by drive means for moving this holding plate in the unloading compartment, substantially parallel to its base and transversally to the direction movement of the pusher, between a first position, wherein the holding plate is located near a lateral edge of said base, and a second position, wherein the holding plate is in contact with the bread during its cutting .
  • the device according to the invention is characterized in that at least a portion of the holding plate is oriented obliquely with respect to said cutting direction and is elastically movable relative to its support.
  • the slices of the bread can be held against each other and do not deviate from one another during the cutting of the bread until it is removed from the unloading compartment.
  • the holding plate is advanced in the unloading compartment towards the cut portion of the bread in a direction substantially parallel to said base and substantially perpendicular to the cutting direction until the holding plate comes into contact. with the bread. Then, the direction of movement of the holding plate is reversed during the cutting of the bread by maintaining contact between the latter and the holding plate until its complete cut.
  • the figure 1 represents a device 1 for automated cutting of a sliced bread 2, according to the invention, comprising a frame 3, a compartment 4 for loading a bread to be cut and a compartment 5 for unloading the cut bread, each having a base 4a, 5a substantially planar.
  • This device further comprises bread cutting blades 6 arranged substantially parallel to each other between said loading and unloading compartments 4 and a pusher 7 which can be moved in the loading compartment 4 between a first position A1. , in which a bread can be introduced into this compartment, and a second position A2 adjacent to the set of blades 6, in which the cut bread 2 can be removed from the unloading compartment 5.
  • the bread 2 To introduce the bread 2 into the loading compartment 4, it is placed on the base 4a of this compartment 4, between the set of blades 6 and the pusher 7. Then, the pusher 7 is moved in the direction of the set of blades 6 to push the bread through the blades so as to cut it.
  • the width of the bread 2 is preferably determined according to the cutting direction.
  • means for determining the width of the bread 2 are present. These means for determining the width of the bread may comprise any system known to those skilled in the art.
  • the distance between the pusher 7 and the set of blades 6 is determined at the moment when the bread is clamped between this pusher 7 and the set of blades 6 after its introduction into the compartment loading 4 and before cutting. This distance corresponds to the width of the bread 2 according to the cutting direction.
  • the means for determining the width of the bread comprise, for example, a contact detector provided with the pusher 7. This detector is activated when the pusher 7 comes into contact with the bread 2 which is located against the assembly. blades 6.
  • the width of the bread 2 is determined by measuring the intensity of the electric current consumed by a motor that drives the pusher 7. This intensity increases when the bread is clamped between the pusher 7 and all 6. When this intensity reaches a predetermined value, the width of the bread is determined on the basis of the position at this moment of the pusher.
  • the figure 2 shows the loading compartments 4 and unloading 5 after the introduction of a bread 2 in the loading compartment 4.
  • the pusher 7 is advanced in its first position A1, wherein the bread 2 is sandwiched between the pusher 7 and the set of blades 6.
  • Holding plates 8 and 9 for the cut bread are provided in the unloading compartment 5.
  • Each holding plate 8 and 9 is fixed on a movable support 10 and 11, which is driven by drive means for moving the plate in the unloading compartment.
  • the supports 10 and 11 extend below the base 5a of the unloading compartment 5 where they are guided by rails 12 extending substantially parallel to the assembly of the blades 6.
  • the supports 10 and 11 and the corresponding holding plates 8 and 9 can move substantially parallel to the base 5a and transversely to the direction of movement of the pusher 7.
  • the holding plates 8 and 9 When the bread 2 is introduced into the loading compartment 4 the holding plates 8 and 9 are positioned in a first position B1 near the opposite lateral edges of said base 5a. In the example shown in the figure 2 this first position B1 of the holding plates 8 and 9 is located at each lateral end of the set of blades 6.
  • the holding plates 8 and 9 preferably extend substantially perpendicular to the base 5a of the unloading compartment 5 and are oriented obliquely with respect to the cutting direction of the bread 2.
  • the fact that the holding plates are obliquely oriented means that the distance between a first end 14 of each holding plate 8 and 9, directed towards the set of blades 6, and a plane of symmetry of the device extending in the cutting direction is greater than the distance between a second the opposite end 15 of the holding plate 8 and 9 and this plane of symmetry.
  • the distance between the first ends 14 is smaller than the distances between the second ends 15 of these plates 8 and 9.
  • the cutting direction is indicated in the figures by an arrow 13.
  • the cutting direction 13 extends in a plane which is perpendicular to the set of blades 6 and / or to the longitudinal direction of the pusher 7. It corresponds to the direction in which the bread 2 is advanced during its cutting.
  • the holding plates 8 and 9 are elastically movable relative to their associated support 10 and 11.
  • the holding plates can move resiliently, in particular resiliently, when they come into contact with the cut portion of the 2 in the embodiment of the invention shown in the figures, the holding plates 8 and 9 are formed by a metal or plastic plate which can flex resiliently .
  • this holding plate 8 or 9 is, for example, hinged relative to its support 10 or 11, while, for example, a compression spring is fixed between the holding plate and its support.
  • the holding plates 8 and 9 are preferably bent in the cutting direction, as shown in the figures.
  • the surface of the holding plates 8 and 9 on the side of the bread 2 has, in particular, a convex shape.
  • the surface of these plates 8 and 9 is preferably smooth, so that the bread 2 can slide unhindered against these surfaces.
  • the bread 2 is moved through all the blades 6 until it is completely cut into slices.
  • the supports 10 and 11 are moved in the direction of the bread 2 until the holding plates 8 and 9 come into contact with the bread in a second position B2 of the plates 8 and 9.
  • These supports 10 and 11 with the holding plates 8 and 9 are preferably set in motion to come into contact with the bread 2 when a portion of at least a quarter of it is cut.
  • the holding plates 8 and 9 come into contact with the bread when approximately half of its width is cut, as shown in FIG. figure 3 .
  • the device comprises, in an interesting manner, a first switch for triggering the drive means holding plates 8 and 9, when the bread 2 has moved a predetermined distance through all the blades 6 in the unloading compartment 5.
  • This first switch may, for example, include a timer that takes into account the speed of movement of the pusher 7 from its first position A1 to start a motor to bring the holding plates 8 and 9 of the bread 2 at the time where the predetermined portion of the bread has been cut.
  • the supports 10 and 11 can be driven by a system, which is for example described in the document EP 1 857 233 and in which the drive means are arranged to slide freely in a rail 16 fixed to the frame 3 under the base 5a of the unloading compartment 5.
  • This rail 10 is substantially parallel to the set of blades 6.
  • the driving means comprise two racks 17, which are each fixed to one of the holding plates 8 and 9 via the corresponding support 10 or 11 and a toothed wheel 18 whose teeth cooperate with those of the racks 17.
  • the driving means comprise a motor 19 which is provided for driving the toothed wheel 18 in a rotational movement to move each holding plate 8 and 9 between its first B1 and its respective second position B2.
  • the holding plates 8 and 9 are stopped in a third position B3, as shown in FIG. figure 5 .
  • the cut bread can then be removed from the unloading compartment 5.
  • the distance between the plates 8 and 9, in particular the supports 10 and 11, can also be stopped a little before the bread is cut completely into slices and before the pusher 7 is adjacent to the set of blades 6.
  • the plates 8 and 9 deform elastically by maintaining pressure against the ends of the bread 2 during the advancement of the bread 2 until it is completely cut.
  • a second switch is provided to trigger the drive means of the holding plates 8 and 9, when they have been brought into contact with the bread 2 in their second position B2. This second switch causes the holding plates 8 and 9 to move to their third position B3.
  • the second switch makes it possible, for example, to measure the intensity of the electric current consumed by the motor 19, which drives the movable supports 10 and 11 of the holding plates 8 and 9. This intensity increases at the moment when the bread is clamped between the holding plates 8 and 9. When this intensity reaches a predetermined value, this second switch engages the motor 19 to move the holding plates 8 and 9 to their third position B3.
  • this switch may, for example, comprise a sensor, which detects the presence of a contact between the holding plates and the bread or a sensor, which detects the arrival of the plates at the second position B2.
  • the loading compartment 4 may comprise any sensor to detect the position and the length of the bread 2. On the basis of the information obtained by this sensor, the second position B2 of the holding plates 8 and 9 is determined to enable these last in this B2 position.
  • the intensity of the current consumed by the motor 19 is measured and at the moment when this intensity is greater than a predetermined value, the motor is stopped as the position B3 is reached.
  • the holding plates 8 and 9 are moved from their second position B2 to their third position B3 under the action of the bread, which acts against the holding plates following the displacement of the bread 2 caused by the advancement of the pusher 7.
  • the action of the motor 19 is not required to move the plates of the second position B2 to the third position B3.
  • This third position of the holding plates 8 and 9 is shown schematically in the figure 5 .
  • the device comprises only a single holding plate in the unloading compartment 5.
  • the bread is clamped, for example, between a stop or side wall of the loading compartment and the holding plate. This has been described in the document EP 1 57 233 .
  • the invention is not limited to the embodiments described above but also covers any alternative form within the scope of those skilled in the art.
  • the device according to the invention is used for cutting into slices of loaves of similar size, it is possible that the first position B1 and the third position B3 of the holding plates 8 and 9 coincide.

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

Abstract

L'invention concerne un dispositif et un procédé de découpe automatique d'un pain en tranches suivant lequel le pain (2) est introduit dans un compartiment de chargement (4) et déplacé suivant une direction de coupe (13) à travers un ensemble des lames (6) sur une base (4a,5a) sensiblement plane afin de découper le pain (2) en tranches, dans lequel le pain (2) entre dans un compartiment de déchargement (5) au fur et à mesure de sa découpe. Lorsqu'une partie du pain découpé est présente dans le compartiment de déchargement (5), au moins une plaque de maintien (8,9) montée sur un support mobile (10,11) est avancée dans le compartiment de déchargement (5) vers la partie découpée du pain (2) jusqu'à ce que la plaque de maintien (8,9) entre en contact avec le pain (2). Le sens du déplacement de la plaque de maintien (8,9) est ensuite inversé au cours de la découpe du pain (2) en maintenant un contact entre le pain (2) et la plaque de maintien (8,9) jusqu'à la découpe complète du pain.The invention relates to a device and a method for automatically cutting a sliced bread in which the bread (2) is introduced into a loading compartment (4) and moved in a cutting direction (13) through a set of blades (6) on a base (4a, 5a) substantially planar for slicing the bread (2), wherein the bread (2) enters an unloading compartment (5) as it is cut. When a portion of the cut bread is present in the unloading compartment (5), at least one holding plate (8,9) mounted on a movable support (10,11) is advanced in the unloading compartment (5) towards the cut portion of the bread (2) until the holding plate (8,9) comes into contact with the bread (2). The direction of movement of the holding plate (8, 9) is then reversed during the cutting of the bread (2) while maintaining contact between the bread (2) and the holding plate (8, 9) up to the complete cutting of the bread.

Description

La présente invention concerne un dispositif de découpe automatisée de pains en tranches.The present invention relates to an automated cutting device sliced breads.

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 de chargement. Ce compartiment est traditionnellement disposé entre un poussoir du pain et un ensemble des lames parallèles destinées à trancher ledit pain. L'utilisateur met ensuite le dispositif en marche en enclenchant l'interrupteur prévu à cet effet. Ceci entraîne la mise en un mouvement alternatif de va-et-vient des lames et en un mouvement de translation transversalement à la direction des lames du poussoir. Le pain est, dès lors, déplacé par ce poussoir 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 de déchargement disposé du côté des lames opposé à celui où est disposé le compartiment de chargement du pain dans le dispositif. Il ne reste alors plus à cet utilisateur qu'à emballer le pain découpé.Automated cutting devices for sliced breads are well known. They are found in most bakeries and also in supermarkets. These devices or automatic bread slicers operate according to the following principle: the user of the device introduces bread he wants to slice by placing it in a loading compartment. This compartment is traditionally arranged between a bread pusher and a set of parallel blades for slicing said bread. The user then starts the device by switching on the switch provided for this purpose. This causes the reciprocating movement of the blades back and forth and in a translation movement transversely to the direction of the blades of the pusher. The bread is, therefore, moved by this pusher towards the blades and cutting begins when it comes in contact with them. The user retrieves his sliced bread in an unloading compartment disposed on the side of the blades opposite to that where the bread loading compartment is placed in the device. It only remains for this user to pack the cut bread.

Un problème rencontré avec ce type de dispositif est que les tranches de pain ont tendance, au cours de sa découpe et encore davantage une fois que celle-ci est terminée, à s'écarter les unes des autres, de sorte qu'il est alors difficile pour l'utilisateur de les rassembler afin de procéder à l'emballage du pain découpé. Ce problème oblige l'utilisateur à guetter la partie tranchée du pain qui, pendant la découpe, émerge de l'ensemble des lames dans le compartiment de déchargement et à saisir manuellement cette partie tranchée par ses extrémités de part et d'autre de l'ensemble de tranches pour éviter qu'elles ne s'écartent les unes des autres, et ce jusqu'à la fin de l'opération de découpe. Une telle manipulation demande donc à l'utilisateur de focaliser son attention sur l'opération de découpe pendant toute sa durée, de se pencher en avant pour apercevoir la partie du pain à saisir, et de rester dans cette position inconfortable jusqu'à la fin de l'opération de découpe. En outre, cette manipulation peut être dangereuse dans la mesure où l'utilisateur introduirait ses mains trop vers l'ensemble des lames et les ferait dès lors entrer en contact de celles-ci. Ceci risquerait de provoquer des blessures, en particulier chez des jeunes enfants, pour qui la découpe d'un pain par un tel dispositif peut représenter un jeu amusant. Par ailleurs, en vue de répondre à des normes officielles de sécurité de plus en plus strictes, les dispositif de découpe automatisée de pain en tranches sont chaque jour de préférence munis de couvercles destinés à recouvrir le compartiment de décharge du pain et agencés de telle sorte que la découpe est interrompue dès que ce couvercle n'est plus fermé. Ainsi, il n'est plus permis à l'utilisateur de saisir le pain en cours de découpe pour éviter que les tranches, qui le constituent, ne s'écartent les unes des autres tant que cette découpe n'est pas entièrement terminée, c'est-à-dire à un moment où les tranches se sont déjà bel et bien écartées. La généralisation de l'utilisation de tels couvercles de protection rend donc nécessaire de trouver des moyens alternatifs à une manipulation du pain en cours de découpe par l'utilisateur pour empêcher que les tranches de ce pain ne puissent s'écarter les unes des autres.A problem with this type of device is that slices of bread tend, during its cutting and even more once it is completed, to deviate from each other, so that it is then difficult for the user to collect them in order to proceed with the packaging of the cut bread. This problem forces the user to watch for the sliced portion of the bread which, during cutting, emerges from all the blades in the unloading compartment and to manually grasp this sliced portion by its ends on either side of the set of slices to prevent them from deviating from one another until the end of the cutting operation. Such manipulation therefore requires the user to focus his attention on the cutting operation for its duration, to lean forward to see the portion of the bread to be grasped, and to remain in this uncomfortable position until the end of the cutting operation. In addition, this manipulation can be dangerous insofar as the user would introduce his hands too to all blades and would make them come into contact with them. This could cause injury, especially in young children, for whom the cutting of a bread by such a device can be a fun game. Moreover, in order to meet increasingly stringent safety standards, the automated slice bread cutters are preferably each day provided with covers for covering the bread discharge compartment and arranged in such a way that that cutting is interrupted as soon as this lid is no longer closed. Thus, it is no longer allowed the user to enter the bread being cut to prevent the slices, which constitute it, do not deviate from each other as this cut is not fully completed, c that is, at a time when the slices have already spread well. The generalization of the use of such protective covers therefore makes it necessary to find alternative means for handling the bread being cut by the user to prevent the slices of this bread can deviate from each other.

Diverses solutions à ce problème ont été proposées. Par exemple, il est connu de disposer latéralement dans le compartiment de décharge du pain, verticalement de part et d'autre de l'ensemble des lames, un ensemble des lames en plastic semi-rigide orienté obliquement par rapport à l'ensemble des lames, vers l'avant du compartiment de déchargement. Lorsque le pain émerge de cet ensemble des lames dans le compartiment, il entre en contact avec chacun des ensembles de lames en plastic. Celles-ci se déforment pour s'adapter à la forme du pain découpé et dès lors exercent une pression de part et d'autre du pain, chacun en sens inverse et transversalement au plan de découpe des tranches du pain. Ainsi, l'ensemble des tranches tend à être maintenu en place. Un tel système présente néanmoins certains inconvénients. Tout d'abord, la flexibilité des lames en plastic ne peut pas être modifiée, de même que leur orientation au repos. Dès lors, selon la taille et la souplesse du pain à découper, elles peuvent soit ne pas suffire à éviter que ces tranches ne s'écartent les unes des autres en cours ou après la découpe, soit rendre difficile la préhension du pain découpé par l'utilisateur une fois la découpe terminée.Various solutions to this problem have been proposed. For example, it is known to dispose laterally in the bread discharge compartment, vertically on either side of all the blades, a set of semi-rigid plastic blades oriented obliquely with respect to all the blades. , towards the front of the unloading compartment. When the bread emerges from this set of blades in the compartment, it comes into contact with each of the sets of plastic blades. These deform to adapt to the shape of the cut bread and therefore exert pressure on both sides of the bread, each in the opposite direction and transversely to the cutting plane of the bread slices. Thus, all slices tend to be held in place. Such a system nevertheless has certain disadvantages. First, the flexibility of the plastic blades can not be changed, as can their rest orientation. Therefore, depending on the size and flexibility of the bread to be cut, they may either not be enough to prevent these slices from deviating from each other during or after cutting, or make it difficult to grip the bread cut by the once the cut is complete.

Un autre système a également été proposé, constitué d'un rideau de tiges rigides suspendues à un rail et pouvant se déplacer librement perpendiculairement à celui-ci. Un tel rideau est disposé verticalement dans le compartiment de décharge du pain, parallèlement à l'ensemble des lames et à une certaine distance de celui-ci. Lors de la sortie du pain dans le compartiment de décharge en cours de découpe, les tiges qu'il rencontre sont relevées sur son passage par la pression qu'il leur applique alors que celles se trouvant de part et d'autre du pain et que celui-ci ne touche pas conservent leur position verticale et de la sorte le retiennent de part et d'autre de ses deux tranches les plus extérieures, empêchant de la sorte les tranches de s'écarter les unes des autres. Un tel système présente cependant également certains inconvénients. En effet, la distance entre le rideau de tiges rigides et l'ensemble des lames du dispositif de découpe étant fixe, cette distance peut être excessive pour retenir convenablement un pain découpé de petite taille, ou, au contraire, insuffisante pour retenir convenablement un pain de grande taille. De plus, dès qu'une partie des tiges du rideau est relevée par le passage du pain, elles présentent leurs pointes en direction de l'utilisateur, ce qui peut constituer un danger de blessure, particulièrement à nouveau pour les enfants.Another system has also been proposed, consisting of a curtain of rigid rods suspended from a rail and being able to move freely perpendicular thereto. Such a curtain is arranged vertically in the bread discharge compartment, parallel to all the blades and at a distance from it. When removing the bread from the unloading compartment during cutting, the stalks it In this way, the pressure is applied to it, while those on either side of the bread, which do not touch the bread, retain their vertical position and thus hold it in place other of its two outermost slices, thus preventing the slices from deviating from each other. Such a system, however, also has certain disadvantages. Indeed, the distance between the curtain of rigid rods and all blades of the cutting device being fixed, this distance may be excessive to properly retain a small cut bread, or, on the contrary, insufficient to properly retain a bread large size. In addition, as soon as a portion of the curtain rods is raised by the passage of the bread, they have their points towards the user, which may constitute a danger of injury, especially again for children.

Un autre système est proposé dans US 1,790,022 . Un pain découpé est maintenu dans sa forme de miche par l'insertion d'agrafes à partir des extrémités opposées.Another system is proposed in US 1,790,022 . A cut bread is held in its loaf form by inserting staples from opposite ends.

On décrit dans le document EP 1 857 233 un système dans lequel la longueur du pain suivant la direction de l'ensemble des lames est déterminée et que des palettes sont déplacées dans le compartiment de déchargement jusqu'à ce que celles-ci enserrent latéralement le pain au cours de sa découpe pour éviter que les tranches du pain coupé ne s'écartent les unes des autres. Un tel arrangement présente l'inconvénient que, en fonction des propriétés du pain, ce dernier ne glisse plus ou ne glisse plus de façon suffisante entre les palettes, de sorte que le pain est comprimé par l'action du poussoir. De plus, il a été constaté que, dans certains cas, par exemple, dus à une forme irrégulière du pain, les tranches a ses extrémités ne sont pas tenues par les palettes et sont séparées lorsqu'elles entrent en contact avec les palettes.We describe in the document EP 1 857 233 a system in which the length of the bread in the direction of the set of blades is determined and that pallets are moved in the unloading compartment until they laterally grip the bread during its cutting to prevent that slices of cut bread do not separate from each other. Such an arrangement has the disadvantage that, depending on the properties of the bread, it no longer slips or slides more sufficiently between the pallets, so that the bread is compressed by the action of the pusher. In addition, it has been found that in some cases, for example, due to an irregular shape of the bread, the slices at its ends are not held by the pallets and are separated when they come into contact with the pallets.

La présente invention permet de résoudre les problèmes susmentionnés en offrant un dispositif de découpe automatisée d'un pain en tranches comprenant un bâti, un compartiment de chargement dans le dispositif d'un pain à découper et un compartiment de déchargement de ce dernier, comportant chacun une base sensiblement plane. Ce dispositif comprend un ensemble des lames de découpe du pain agencées sensiblement parallèlement les unes aux autres entre lesdits compartiments de chargement et de déchargement et un poussoir agencé pour être déplacé dans le compartiment de chargement entre une première position, dans laquelle un pain peut être introduit dans ce compartiment, et une seconde position adjacente à l'ensemble des lames, dans laquelle le pain découpé peut être retiré du compartiment de déchargement. Ainsi, le pain peut se déplacer suivant une direction de coupe à travers l'ensemble des lames au cours de la découpe du pain.The present invention solves the aforementioned problems by providing a device for automatically cutting a sliced bread comprising a frame, a loading compartment in the device of a bread to be cut and an unloading compartment thereof, each comprising a substantially flat base. This device comprises a set of bread cutting blades arranged substantially parallel to each other between said loading and unloading compartments and a pusher arranged to be moved in the load compartment between a first position, in which a bread can be introduced. in this compartment, and a second position adjacent to all the blades, in which the cut bread can be removed from the compartment of unloading. Thus, the bread can move in a cutting direction through all the blades during the cutting of the bread.

Ce dispositif comprend, en outre, au moins une plaque de maintien, fixée sur un support mobile, qui est entrainée par des moyens d'entrainement pour déplacer cette plaque de maintien dans le compartiment de déchargement, sensiblement parallèlement à sa base et transversalement au sens de déplacement du poussoir, entre une première position, dans laquelle la plaque de maintien est située auprès d'un bord latéral de ladite base, et une seconde position, dans laquelle la plaque de maintien est en contact avec le pain au cours de sa découpe.This device further comprises at least one holding plate, fixed on a movable support, which is driven by drive means for moving this holding plate in the unloading compartment, substantially parallel to its base and transversally to the direction movement of the pusher, between a first position, wherein the holding plate is located near a lateral edge of said base, and a second position, wherein the holding plate is in contact with the bread during its cutting .

Le dispositif suivant l'invention se caractérise par le fait qu'au moins une partie de la plaque de maintien est orientée obliquement par rapport à ladite direction de coupe et est mobile élastiquement par rapport à son support.The device according to the invention is characterized in that at least a portion of the holding plate is oriented obliquely with respect to said cutting direction and is elastically movable relative to its support.

Par la présence de cette plaque de maintien, les tranches du pain peuvent être maintenues les unes contre les autres et ne s'écartent pas l'une de l'autre au cours de la découpe du pain jusqu'à ce que celui-ci est enlevé du compartiment de déchargement.By the presence of this holding plate, the slices of the bread can be held against each other and do not deviate from one another during the cutting of the bread until it is removed from the unloading compartment.

Suivant l'invention, la plaque de maintien est avancée dans le compartiment de déchargement vers la partie découpée du pain suivant une direction sensiblement parallèle à ladite base et sensiblement perpendiculairement à la direction de coupe jusqu'à ce que la plaque de maintien entre en contact avec le pain. Ensuite, le sens du déplacement de la plaque de maintien est inversé au cours de la découpe du pain en maintenant un contact entre ce dernier et la plaque de maintien jusqu'à sa découpe complète.According to the invention, the holding plate is advanced in the unloading compartment towards the cut portion of the bread in a direction substantially parallel to said base and substantially perpendicular to the cutting direction until the holding plate comes into contact. with the bread. Then, the direction of movement of the holding plate is reversed during the cutting of the bread by maintaining contact between the latter and the holding plate until its complete cut.

Le contact entre le pain et la plaque de maintien, lors du déplacement inversé, est assuré par le fait que cette plaque est orientée obliquement par rapport à la direction de coupe et qu'elle est mobile élastiquement par rapport à son support. Grâce à l'élasticité de la plaque de maintien, cette dernière reste serrée contre le côté latéral de la partie du pain qui est découpée.The contact between the bread and the holding plate, during the inverted movement, is ensured by the fact that this plate is oriented obliquely with respect to the cutting direction and is elastically movable relative to its support. Thanks to the elasticity of the holding plate, the latter remains tight against the lateral side of the portion of the bread that is cut.

D'autres détails et particularités de l'invention ressortiront de la description donnée ci-après à titre d'exemple non limitatif de quelques formes de réalisation particulières de l'invention avec référence aux dessins annexés.

  • La figure 1 représente en coupe verticale schématiquement un dispositif selon l'invention.
  • La figure 2 est une vue de dessus d'une partie du dispositif de la figure 1, suivant une première forme de réalisation de l'invention, représentant le poussoir, l'ensemble des lames et les plaques de maintien, lorsqu'un pain est introduit dans le compartiment de chargement.
  • La figure 3 représente une vue analogue à celle de la figure 2 au moment où la découpe du pain est plus avancée.
  • La figure 4 montre une vue analogue à celle des figures 2 et 3 au moment où le pain est presque découpé complètement en tranches.
  • La figure 5 montre une vue analogue à celle des figures 2 à 4 au moment où le pain est découpé complètement et peut être retiré du compartiment de déchargement.
  • La figure 6 est une vue de face d'une partie du dispositif représenté à la figure 1, selon un mode de réalisation intéressant de invention.
  • La figure 7 représente une vue du dessus de la partie du dispositif représentée à la figure 6.
Other details and features of the invention will emerge from the description given below by way of non-limiting example of some particular embodiments of the invention with reference to the accompanying drawings.
  • The figure 1 represents in vertical section schematically a device according to the invention.
  • The figure 2 is a top view of a part of the device of the figure 1 , according to a first embodiment of the invention, showing the pusher, the set of blades and the holding plates, when a bread is introduced into the loading compartment.
  • The figure 3 represents a view similar to that of the figure 2 when the cutting of the bread is more advanced.
  • The figure 4 shows a view similar to that of Figures 2 and 3 at the moment the bread is almost completely sliced.
  • The figure 5 shows a view similar to that of Figures 2 to 4 at the moment the bread is cut completely and can be removed from the unloading compartment.
  • The figure 6 is a front view of a part of the device shown in figure 1 according to an advantageous embodiment of the invention.
  • The figure 7 represents a view from above of the part of the device shown in figure 6 .

Dans les différentes figures, les mêmes chiffres de référence se rapportent à des éléments analogues ou identiques.In the different figures, the same reference numerals refer to similar or identical elements.

La figure 1 représente un dispositif 1 de découpe automatisée d'un pain 2 en tranches, selon l'invention, comprenant un bâti 3, un compartiment 4 de chargement d'un pain à découper et un compartiment 5 de déchargement du pain découpé, comportant chacun une base 4a, 5a sensiblement plane. Ce dispositif comprend, en outre, des lames 6 de découpe du pain 2 agencées sensiblement parallèlement les unes aux autres entre lesdits compartiments de chargement 4 et de déchargement 5 et un poussoir 7 pouvant être déplacé dans le compartiment de chargement 4 entre une première position A1, dans laquelle un pain peut être introduit dans ce compartiment, et une seconde position A2 adjacente à l'ensemble des lames 6, dans laquelle le pain 2 découpé peut être retiré du compartiment de déchargement 5.The figure 1 represents a device 1 for automated cutting of a sliced bread 2, according to the invention, comprising a frame 3, a compartment 4 for loading a bread to be cut and a compartment 5 for unloading the cut bread, each having a base 4a, 5a substantially planar. This device further comprises bread cutting blades 6 arranged substantially parallel to each other between said loading and unloading compartments 4 and a pusher 7 which can be moved in the loading compartment 4 between a first position A1. , in which a bread can be introduced into this compartment, and a second position A2 adjacent to the set of blades 6, in which the cut bread 2 can be removed from the unloading compartment 5.

Pour introduire le pain 2 dans le compartiment de chargement 4, celui-ci est posé sur la base 4a de ce compartiment 4, entre l'ensemble des lames 6 et le poussoir 7. Ensuite, le poussoir 7 est déplacé dans la direction de l'ensemble des lames 6 pour pousser le pain à travers les lames de manière à découper celui-ci.To introduce the bread 2 into the loading compartment 4, it is placed on the base 4a of this compartment 4, between the set of blades 6 and the pusher 7. Then, the pusher 7 is moved in the direction of the set of blades 6 to push the bread through the blades so as to cut it.

L'on détermine, de préférence, la largeur du pain 2 suivant la direction de coupe. A cet effet, des moyens de détermination de la largeur du pain 2 sont présents. Ces moyens de détermination de la largeur du pain peuvent comprendre tout système connu par l'homme du métier.The width of the bread 2 is preferably determined according to the cutting direction. For this purpose, means for determining the width of the bread 2 are present. These means for determining the width of the bread may comprise any system known to those skilled in the art.

Suivant une forme de réalisation préférée de l'invention, la distance entre le poussoir 7 et l'ensemble des lames 6 est déterminée au moment où le pain est serré entre ce poussoir 7 et l'ensemble des lames 6 après son introduction dans le compartiment de chargement 4 et avant sa découpe. Cette distance correspond à la largeur du pain 2 suivant la direction de coupe. Dans un tel cas, les moyens de détermination de la largeur du pain comprennent, par exemple, un détecteur de contact pourvu au poussoir 7. Ce détecteur est activé lorsque le poussoir 7 vient en contact avec le pain 2 qui se situe contre l'ensemble des lames 6.According to a preferred embodiment of the invention, the distance between the pusher 7 and the set of blades 6 is determined at the moment when the bread is clamped between this pusher 7 and the set of blades 6 after its introduction into the compartment loading 4 and before cutting. This distance corresponds to the width of the bread 2 according to the cutting direction. In such a case, the means for determining the width of the bread comprise, for example, a contact detector provided with the pusher 7. This detector is activated when the pusher 7 comes into contact with the bread 2 which is located against the assembly. blades 6.

D'une manière intéressante, la largeur du pain 2 est déterminée en mesurant l'intensité du courant électrique consommé par un moteur qui entraîne le poussoir 7. Cette intensité augmente au moment où le pain est serré entre le poussoir 7 et l'ensemble des lames 6. Lorsque cette intensité atteint une valeur prédéterminée, la largeur du pain est donc déterminée sur base de la position à ce moment du pousseur.Interestingly, the width of the bread 2 is determined by measuring the intensity of the electric current consumed by a motor that drives the pusher 7. This intensity increases when the bread is clamped between the pusher 7 and all 6. When this intensity reaches a predetermined value, the width of the bread is determined on the basis of the position at this moment of the pusher.

La figure 2 montre les compartiments de chargement 4 et de déchargement 5 après l'introduction d'un pain 2 dans le compartiment de chargement 4. Le poussoir 7 est avancé dans sa première position A1, dans laquelle le pain 2 est enserré entre ce poussoir 7 et l'ensemble des lames 6.The figure 2 shows the loading compartments 4 and unloading 5 after the introduction of a bread 2 in the loading compartment 4. The pusher 7 is advanced in its first position A1, wherein the bread 2 is sandwiched between the pusher 7 and the set of blades 6.

Des plaques de maintien 8 et 9 pour le pain coupé sont prévues dans le compartiment de déchargement 5. Chaque plaque de maintien 8 et 9 est fixée sur un support mobile 10 et 11, qui est entraîné par des moyens d'entrainement pour déplacer la plaque de maintien correspondante dans le compartiment de déchargement. Les supports 10 et 11 s'étendent jusqu'en dessous de la base 5a du compartiment de déchargement 5 où ils sont guidés par des rails 12 s'étendant sensiblement parallèlement à l'ensemble des lames 6. Ainsi, les supports 10 et 11 et les plaques de maintien 8 et 9 correspondantes peuvent se déplacer sensiblement parallèlement à la base 5a et transversalement au sens de déplacement du poussoir 7.Holding plates 8 and 9 for the cut bread are provided in the unloading compartment 5. Each holding plate 8 and 9 is fixed on a movable support 10 and 11, which is driven by drive means for moving the plate in the unloading compartment. The supports 10 and 11 extend below the base 5a of the unloading compartment 5 where they are guided by rails 12 extending substantially parallel to the assembly of the blades 6. Thus, the supports 10 and 11 and the corresponding holding plates 8 and 9 can move substantially parallel to the base 5a and transversely to the direction of movement of the pusher 7.

Lorsque le pain 2 est introduit dans le compartiment de chargement 4 les plaques de maintien 8 et 9 sont positionnées dans une première position B1 auprès des bords latéraux opposés de ladite base 5a. Dans l'exemple représenté dans la figure 2, cette première position B1 des plaques de maintien 8 et 9 est située à chaque extrémité latérale de l'ensemble des lames 6.When the bread 2 is introduced into the loading compartment 4 the holding plates 8 and 9 are positioned in a first position B1 near the opposite lateral edges of said base 5a. In the example shown in the figure 2 this first position B1 of the holding plates 8 and 9 is located at each lateral end of the set of blades 6.

Les plaques de maintien 8 et 9 s'étendent, de préférence, sensiblement perpendiculairement par rapport à la base 5a du compartiment de déchargement 5 et sont orientées obliquement par rapport à la direction de coupe du pain 2. Le fait que les plaques de maintien sont orientées obliquement implique que la distance entre une première extrémité 14 de chaque plaque de maintien 8 et 9, dirigée vers l'ensemble des lames 6, et un plan de symétrie du dispositif s'étendant suivant la direction de coupe est supérieure à la distance entre une deuxième l'extrémité 15 opposée de cette plaque de maintien 8 et 9 et ce plan de symétrie.The holding plates 8 and 9 preferably extend substantially perpendicular to the base 5a of the unloading compartment 5 and are oriented obliquely with respect to the cutting direction of the bread 2. The fact that the holding plates are obliquely oriented means that the distance between a first end 14 of each holding plate 8 and 9, directed towards the set of blades 6, and a plane of symmetry of the device extending in the cutting direction is greater than the distance between a second the opposite end 15 of the holding plate 8 and 9 and this plane of symmetry.

Ainsi, dans le cas où deux plaques de maintien 8 et 9 sont présentes, la distance entre les premières extrémités 14 est inférieure à la distances entre les deuxièmes extrémités 15 de ces plaques 8 et 9.Thus, in the case where two holding plates 8 and 9 are present, the distance between the first ends 14 is smaller than the distances between the second ends 15 of these plates 8 and 9.

La direction de coupe est indiquée dans les figures par une flèche 13. En général, la direction de coupe 13 s'étend dans un plan qui est perpendiculaire à l'ensemble des lames 6 et/ou à la direction longitudinale du poussoir 7. Elle correspond à la direction dans laquelle le pain 2 est avancé au cours de sa découpe.The cutting direction is indicated in the figures by an arrow 13. In general, the cutting direction 13 extends in a plane which is perpendicular to the set of blades 6 and / or to the longitudinal direction of the pusher 7. It corresponds to the direction in which the bread 2 is advanced during its cutting.

Les plaques de maintien 8 et 9 sont mobile élastiquement par rapport à leur support associé 10 et 11. Ainsi, les plaques de maintien peuvent se déplacer de manière élastique, en particulier de manière résiliente, lorsqu'elles entrent en contact avec la partie coupée du pain 2 pendant qu'elles exercent une force de poussée contre le pain 2. Dans la forme de réalisation de l'invention représentée aux figures, les plaques de maintien 8 et 9 sont formées par une plaque métallique ou plastique qui peut fléchir de manière résiliente.The holding plates 8 and 9 are elastically movable relative to their associated support 10 and 11. Thus, the holding plates can move resiliently, in particular resiliently, when they come into contact with the cut portion of the 2 in the embodiment of the invention shown in the figures, the holding plates 8 and 9 are formed by a metal or plastic plate which can flex resiliently .

Dans une autre forme de réalisation de l'invention, cette plaque de maintien 8 ou 9 est, par exemple, articulée par rapport à son support 10 ou 11, tandis que, par exemple, un ressort de compression est fixé entre la plaque de maintien et son support.In another embodiment of the invention, this holding plate 8 or 9 is, for example, hinged relative to its support 10 or 11, while, for example, a compression spring is fixed between the holding plate and its support.

Les plaques de maintien 8 et 9 sont de préférence courbées suivant la direction de coupe, comme représenté aux figures. La surface des plaques de maintien 8 et 9 du côté du pain 2 a, en particulier, une forme convexe.The holding plates 8 and 9 are preferably bent in the cutting direction, as shown in the figures. The surface of the holding plates 8 and 9 on the side of the bread 2 has, in particular, a convex shape.

Afin d'assurer que le pain puisse se déplacer sensiblement librement entre les plaques de maintien 8 et 9 suivant la direction de coupe, la surface de ces plaques 8 et 9 est de préférence lisse, de sorte que le pain 2 peut glisser sans entraves contre ces surfaces.In order to ensure that the bread can move substantially freely between the holding plates 8 and 9 in the cutting direction, the surface of these plates 8 and 9 is preferably smooth, so that the bread 2 can slide unhindered against these surfaces.

Par l'action du poussoir 7, le pain 2 est déplacé à travers l'ensemble des lames 6 jusqu'à sa découpe complète en tranches. Lorsqu'une partie prédéterminée du pain 2 a été découpée, les supports 10 et 11 sont déplacés dans la direction du pain 2 jusqu'à ce que les plaques de maintien 8 et 9 entrent en contact avec le pain dans une deuxième position B2 des plaques de maintien 8 et 9.By the action of the pusher 7, the bread 2 is moved through all the blades 6 until it is completely cut into slices. When a predetermined portion of the bread 2 has been cut, the supports 10 and 11 are moved in the direction of the bread 2 until the holding plates 8 and 9 come into contact with the bread in a second position B2 of the plates 8 and 9.

Ces supports 10 et 11 avec les plaques de maintien 8 et 9 sont, de préférence, mis en mouvement afin d'entrer en contact avec le pain 2 lorsqu'une partie d'au moins un quart de celui-ci est découpée. Avantageusement, les plaques de maintien 8 et 9 viennent en contact avec le pain lorsqu'environ la moitié de sa largeur est coupée, comme représenté à la figure 3.These supports 10 and 11 with the holding plates 8 and 9 are preferably set in motion to come into contact with the bread 2 when a portion of at least a quarter of it is cut. Advantageously, the holding plates 8 and 9 come into contact with the bread when approximately half of its width is cut, as shown in FIG. figure 3 .

Pour entamer le déplacement des plaques de maintien 8 et 9 à partir de leur position initiale B1 jusqu'à leur seconde position B2, le dispositif, suivant l'invention, comprend, de façon intéressante, un premier interrupteur pour déclencher les moyens d'entraînement des plaques de maintien 8 et 9, lorsque le pain 2 s'est déplacé d'une distance prédéterminée à travers l'ensemble des lames 6 dans le compartiment de déchargement 5.To initiate the movement of the holding plates 8 and 9 from their initial position B1 to their second position B2, the device according to the invention comprises, in an interesting manner, a first switch for triggering the drive means holding plates 8 and 9, when the bread 2 has moved a predetermined distance through all the blades 6 in the unloading compartment 5.

Ce premier interrupteur peut, par exemple, comprendre un timer qui tient compte de la vitesse de déplacement du poussoir 7 à partir de sa première position A1 afin de mettre un moteur en marche pour rapprocher les plaques de maintien 8 et 9 du pain 2 au moment où la partie prédéterminée du pain a été découpée.This first switch may, for example, include a timer that takes into account the speed of movement of the pusher 7 from its first position A1 to start a motor to bring the holding plates 8 and 9 of the bread 2 at the time where the predetermined portion of the bread has been cut.

Les supports 10 et 11 peuvent être entrainés par un système, qui est par exemple décrit dans le document EP 1 857 233 et dans lequel les moyens d'entraînement sont agencés pour pouvoir coulisser librement dans un rail 16 fixé au bâti 3 sous la base 5a du compartiment de déchargement 5. Ce rail 10 est sensiblement parallèle à l'ensemble des lames 6. Dans ce système, qui est représenté schématiquement dans les figures 6 et 7, les moyens d'entrainement comprennent deux crémaillères 17, qui sont fixées chacune à une des plaques de maintien 8 et 9 par l'intermédiaire du support 10 ou 11 correspondant et une roue dentée 18, dont les dents coopèrent avec celles des crémaillères 17. Les moyens d'entrainement comprennent un moteur 19 qui est prévu pour entraîner la roue dentée 18 suivant un mouvement de rotation pour déplacer chaque plaque de maintien 8 et 9 entre sa première B1 et sa seconde position B2 respective.The supports 10 and 11 can be driven by a system, which is for example described in the document EP 1 857 233 and in which the drive means are arranged to slide freely in a rail 16 fixed to the frame 3 under the base 5a of the unloading compartment 5. This rail 10 is substantially parallel to the set of blades 6. In this system, which is schematically represented in the Figures 6 and 7 , the driving means comprise two racks 17, which are each fixed to one of the holding plates 8 and 9 via the corresponding support 10 or 11 and a toothed wheel 18 whose teeth cooperate with those of the racks 17. The driving means comprise a motor 19 which is provided for driving the toothed wheel 18 in a rotational movement to move each holding plate 8 and 9 between its first B1 and its respective second position B2.

Quand les plaques de maintien 8 et 9 sont toutes les deux en contact avec le pain 2, comme représenté dans la figure 3, le sens de déplacement des plaques de maintien 8 et 9 est inversé, de sorte qu'elles se déplacent dans la direction de leur première position B1. Lors de ce mouvement inversé, un contact est maintenu entre le pain et les plaques de maintien jusqu'à sa découpe complète pour qu'il reste enserré latéralement par les plaques de maintien 8 et 9. Ces plaques 8 et 9 sont, par conséquent, déformées quelque peu de manière élastique ou résiliente au fur et à mesure que le pain avance dans le compartiment de déchargement 5 et au fur et à mesure que les plaques de maintien 8 et 9 s'éloignent l'une de l'autre. Ainsi, une pression est exercée latéralement par les plaques de maintien 8 et 9 sur le pain afin de tenir les tranches du pain l'une contre l'autre.When the holding plates 8 and 9 are both in contact with the bread 2, as shown in FIG. figure 3 , the direction of movement of the plates 8 and 9 is reversed, so that they move in the direction of their first position B1. During this inverted movement, a contact is maintained between the bread and the holding plates until it is completely cut so that it remains clasped laterally by the holding plates 8 and 9. These plates 8 and 9 are, therefore, deformed somewhat resiliently or resiliently as the bread advances into the unloading compartment 5 and as the holding plates 8 and 9 move away from each other. Thus, pressure is exerted laterally by the holding plates 8 and 9 on the bread to hold the slices of the bread against each other.

Au moment où le pain 2 est découpé complètement en tranches et le poussoir 7 se trouve dans sa deuxième position A2, les plaques de maintien 8 et 9 sont arrêtées dans une troisième position B3, comme montré dans la figure 5. Le pain découpé peut, ensuite, être enlevé du compartiment de déchargement 5.At the moment when the bread 2 is cut completely into slices and the pusher 7 is in its second position A2, the holding plates 8 and 9 are stopped in a third position B3, as shown in FIG. figure 5 . The cut bread can then be removed from the unloading compartment 5.

Evidemment, l'éloignement des plaques 8 et 9, en particulier des supports 10 et 11, peut également être arrêté quelque peu avant que le pain est découpé complètement en tranches et avant que le poussoir 7 est adjacent à l'ensemble des lames 6. Dans un tel cas, les plaques 8 et 9 se déforment de manière élastique en maintenant un pression contre les extrémités du pain 2 lors de l'avancement du pain 2 jusqu'à sa découpe complète.Of course, the distance between the plates 8 and 9, in particular the supports 10 and 11, can also be stopped a little before the bread is cut completely into slices and before the pusher 7 is adjacent to the set of blades 6. In such a case, the plates 8 and 9 deform elastically by maintaining pressure against the ends of the bread 2 during the advancement of the bread 2 until it is completely cut.

Pour déclencher les moyens d'entraînement des plaques de maintien 8 et 9, lorsque celles-ci ont été mises en contact avec le pain 2 dans leur seconde position B2, un deuxième interrupteur est prévu. Ce deuxième interrupteur provoque le déplacement des plaques de maintien 8 et 9 vers leur troisième position B3.To trigger the drive means of the holding plates 8 and 9, when they have been brought into contact with the bread 2 in their second position B2, a second switch is provided. This second switch causes the holding plates 8 and 9 to move to their third position B3.

Le deuxième interrupteur permet, par exemple, de mesurer l'intensité du courant électrique consommé par le moteur 19, qui entraîne les supports mobiles 10 et 11 des plaques de maintien 8 et 9. Cette intensité augmente au moment où le pain est serré entre les plaques de maintien 8 et 9. Lorsque cette intensité atteint une valeur prédéterminée, ce deuxième interrupteur enclenche le moteur 19 pour déplacer les plaques de maintien 8 et 9 vers leur troisième position B3.The second switch makes it possible, for example, to measure the intensity of the electric current consumed by the motor 19, which drives the movable supports 10 and 11 of the holding plates 8 and 9. This intensity increases at the moment when the bread is clamped between the holding plates 8 and 9. When this intensity reaches a predetermined value, this second switch engages the motor 19 to move the holding plates 8 and 9 to their third position B3.

Il va de soi que l'homme du métier peut considérer plusieurs alternatives pour ce deuxième interrupteur. Ainsi, cet interrupteur peut, par exemple, comprendre un capteur, qui détecte la présence d'un contact entre les plaques de maintien et le pain ou un capteur, qui détecte l'arrivée des plaques à la deuxième position B2.It goes without saying that the skilled person can consider several alternatives for this second switch. Thus, this switch may, for example, comprise a sensor, which detects the presence of a contact between the holding plates and the bread or a sensor, which detects the arrival of the plates at the second position B2.

Alternativement, le compartiment de chargement 4 peut comprendre un capteur quelconque pour détecter la position et la longueur du pain 2. Sur base des informations obtenus par ce capteur, la seconde position B2 des plaques de maintien 8 et 9 est déterminée pour permettre de déplacer ces dernières dans cette position B2.Alternatively, the loading compartment 4 may comprise any sensor to detect the position and the length of the bread 2. On the basis of the information obtained by this sensor, the second position B2 of the holding plates 8 and 9 is determined to enable these last in this B2 position.

Lors du déplacement des plaques de maintien 8 et 9 vers la position B3 un contact résilient est maintenu entre le pain 2 et les plaques 8 et 9. L'arrivée à la position B2 peut être détectée par la présence d'un capteur qui détecte l'intensité de la pression entre le pain et la surface des plaques de maintien 8 et 9. Lorsque cette pression est inférieure à un valeur prédéterminée, il est constaté que la troisième position B3 est atteinte, et le déplacement des plaques de maintien est terminé par l'arrêt des moyens d'entrainement, en particulier par l'arrêt du moteur 19.During the displacement of the holding plates 8 and 9 to the position B3 a resilient contact is maintained between the bread 2 and the plates 8 and 9. The arrival at the position B2 can be detected by the presence of a sensor which detects the the intensity of the pressure between the bread and the surface of the holding plates 8 and 9. When this pressure is lower than a predetermined value, it is found that the third position B3 is reached, and the displacement of the holding plates is terminated by stopping the drive means, in particular by stopping the engine 19.

Alternativement, l'intensité du courant consommé par le moteur 19 est mesurée et au moment où cette intensité est supérieure à une valeur prédéterminée, le moteur est arrêté étant donné que la position B3 est atteinte.Alternatively, the intensity of the current consumed by the motor 19 is measured and at the moment when this intensity is greater than a predetermined value, the motor is stopped as the position B3 is reached.

Dans une autre forme de réalisation de l'invention, les plaques de maintien 8 et 9 sont déplacées de leur seconde position B2 vers leur troisième position B3 sous l'action du pain, qui agit contre les plaques de maintien suite au déplacement du pain 2 causé par l'avancement du poussoir 7. Ainsi, l'action du moteur 19 n'est pas requise pour mouvoir les plaques de la seconde position B2 vers la troisième position B3. Lorsque le poussoir 7 arrive dans sa deuxième position A2, l'avancement du pain 2 est terminée et le déplacement des plaques de maintien 8 et 9 est automatiquement arrêté dans la troisième position B3.In another embodiment of the invention, the holding plates 8 and 9 are moved from their second position B2 to their third position B3 under the action of the bread, which acts against the holding plates following the displacement of the bread 2 caused by the advancement of the pusher 7. Thus, the action of the motor 19 is not required to move the plates of the second position B2 to the third position B3. When the pusher 7 arrives in its second position A2, the advancement of the bread 2 is completed and the displacement of the holding plates 8 and 9 is automatically stopped in the third position B3.

Cette troisième position des plaques de maintien 8 et 9 est représentée schématiquement dans la figure 5.This third position of the holding plates 8 and 9 is shown schematically in the figure 5 .

Nonobstant que l'invention a été décrite ci-dessus avec référence à un dispositif comprenant deux plaques de maintien 8 et 9, qui sont agencées de part et d'autre du pain 2 ou du compartiment de déchargement 5, il est également possible que le dispositif comprend seulement une seule plaque de maintien dans le compartiment de déchargement 5. Dans un tel cas, le pain est serré, par exemple, entre un arrêt ou une paroi latérale du compartiment de chargement et la plaque de maintien. Ceci a d'ailleurs été décrit dans le document EP 1 57 233 .Notwithstanding that the invention has been described above with reference to a device comprising two holding plates 8 and 9, which are arranged on either side of the bread 2 or the unloading compartment 5, it is also possible that the device comprises only a single holding plate in the unloading compartment 5. In such a case, the bread is clamped, for example, between a stop or side wall of the loading compartment and the holding plate. This has been described in the document EP 1 57 233 .

L'invention n'est pas limitée aux formes de réalisation décrites ci-dessus mais couvre également toute forme alternative à la portée de l'homme du métier. Lorsque, par exemple, le dispositif suivant l'invention est utilisé pour découper en tranches des pains de taille similaire, il est possible que la première position B1 et la troisième position B3 des plaques de maintien 8 et 9 coïncident.The invention is not limited to the embodiments described above but also covers any alternative form within the scope of those skilled in the art. When, for example, the device according to the invention is used for cutting into slices of loaves of similar size, it is possible that the first position B1 and the third position B3 of the holding plates 8 and 9 coincide.

Claims (14)

Dispositif de découpe automatisée d'un pain (2) en tranches, comprenant un bâti (3), un compartiment de chargement (4) d'un pain à découper et un compartiment de déchargement (5) du pain découpé, ces compartiments (4,5) comportant chacun une base (4a,5a) sensiblement plane, le dispositif comprenant un ensemble des lames (6) de découpe du pain (2) agencées sensiblement parallèlement les unes aux autres entre lesdits compartiments de chargement (4) et de déchargement (5) et un poussoir (7) pouvant être déplacé dans le compartiment de chargement (4) entre une première position (A1), dans laquelle un pain (2) peut être introduit dans ce compartiment (4), et une seconde position (A2) adjacente à l'ensemble des lames, dans laquelle le pain découpé peut être retiré du compartiment de déchargement (5), de sorte que le pain (2) puisse se déplacer suivant une direction de coupe (13) à travers l'ensemble des lames (6) au cours de la découpe, ce dispositif comprenant également au moins une plaque de maintien (8,9) fixée sur un support mobile (10,11) qui est entraîné par des moyens d'entrainement pour déplacer ladite plaque de maintien (8,9) dans le compartiment de déchargement (5), sensiblement parallèlement à sa base (5a) et transversalement au sens de déplacement du poussoir (7), entre une première position (B1), dans laquelle la plaque de maintien (8,9) est située auprès d'un bord latéral de ladite base (5), et une seconde position (B2), dans laquelle la plaque de maintien (8,9) est en contact avec le pain (2) au cours de sa découpe, ce dispositif étant caractérisé en ce qu'au moins une partie de la plaque de maintien (8,9) est orientée obliquement par rapport à ladite direction de coupe (13) et est mobile élastiquement par rapport à son support (10,11).A device for automatically cutting a sliced bread (2) comprising a frame (3), a loading compartment (4) of a slicing bread and an unloading compartment (5) of the sliced bread, these compartments (4) 5) each having a substantially planar base (4a, 5a), the device comprising a set of bread cutting blades (6) arranged substantially parallel to each other between said loading and unloading compartments (4). (5) and a pusher (7) movable in the loading compartment (4) between a first position (A1), in which a bread (2) can be introduced into this compartment (4), and a second position ( A2) adjacent to the blade assembly, wherein the cut bread can be removed from the unloading compartment (5), so that the bread (2) can move in a cutting direction (13) across the assembly blades (6) during cutting, this device comprising ega at least one holding plate (8,9) fixed on a movable support (10,11) which is driven by drive means for moving said holding plate (8,9) into the unloading compartment (5) , substantially parallel to its base (5a) and transversely to the direction of movement of the pusher (7), between a first position (B1), in which the holding plate (8,9) is situated near a lateral edge of said base (5), and a second position (B2), in which the holding plate (8,9) is in contact with the bread (2) during its cutting, this device being characterized in that at least one part of the holding plate (8,9) is oriented obliquely with respect to said cutting direction (13) and is elastically movable relative to its support (10,11). Dispositif suivant la revendication 1, dans lequel la distance entre une extrémité (14) de la plaque de maintien (8,9), dirigée vers l'ensemble des lames (6), et un plan de symétrie du dispositif s'étendant suivant ladite direction de coupe (13) est supérieure à la distance entre l'extrémité opposée (15) de cette plaque de maintien (8,9) et ce plan de symétrie.Device according to Claim 1, in which the distance between one end (14) of the holding plate (8, 9), directed towards the set of blades (6), and a plane of symmetry of the device extending along said cutting direction (13) is greater than the distance between the opposite end (15) of this holding plate (8,9) and this plane of symmetry. Dispositif suivant la revendication 1 ou 2, dans lequel sont prévus des moyens de détermination de la largeur du pain (2) présent dans le compartiment de chargement (4), ces moyens étant tels à permettre de déterminer la largeur du pain (2) suivant la direction de coupe (13).Device according to Claim 1 or 2, in which means for determining the width of the bread (2) present in the loading compartment (4) are provided, these means being such as to make it possible to determine the width of the bread (2) according to the cutting direction (13). Dispositif suivant l'une quelconque des revendications 1 à 3, comprenant un premier interrupteur pour déclencher les moyens d'entrainement lorsque le pain (2) est avancé d'une distance prédéterminée à travers l'ensemble des lames (6) dans le compartiment de déchargement (5), de telle sorte à déplacer la plaque de maintien (8,9) de sa première position (B1) jusqu'à sa seconde position (B2).Device according to any one of claims 1 to 3, comprising a first switch for triggering the drive means when the bread (2) is advanced by a predetermined distance through all the blades (6) in the compartment of unloading (5), so as to move the holding plate (8,9) from its first position (B1) to its second position (B2). Dispositif suivant l'une quelconque des revendications 1 à 4, dans lequel un deuxième interrupteur est prévu pour déclencher les moyens d'entrainement lorsque le pain (2) a été avancé d'une distance prédéterminée à travers l'ensemble des lames (6) dans le compartiment de déchargement (5) et lorsque la plaque de maintien (8,9) est en contact avec le pain (2), de manière à déplacer le support mobile (10,11) de la plaque de maintien (8,9) dans la direction de sa première position (B1) jusqu'à ce que le poussoir (7) susdit est dans ladite seconde position (A2) adjacente à l'ensemble des lames (6) ou jusqu'à ce que le poussoir (7) est positionné à une distance prédéterminée de l'ensemble des lames (6).Device according to any one of claims 1 to 4, wherein a second switch is provided for triggering the drive means when the bread (2) has been advanced a predetermined distance through all the blades (6) in the unloading compartment (5) and when the holding plate (8,9) is in contact with the bread (2), so as to displace the movable support (10,11) of the holding plate (8,9). ) in the direction of its first position (B1) until the aforesaid pusher (7) is in said second position (A2) adjacent to all of the blades (6) or until the pusher (7) ) is positioned at a predetermined distance from the set of blades (6). Dispositif suivant l'une quelconque des revendications 1 à 5, comprenant un timer coopérant avec les moyens d'entrainement pour déplacer le support mobile (10,11) de la plaque de maintien (8,9) dans la direction de sa première position (B1) pendant un temps correspondant au temps nécessaire pour déplacer le poussoir (7) dans sa position (A2) adjacente à l'ensemble des lames (6) à partir de sa position dans laquelle la plaque de maintien (8,9) est mise en contact avec le pain (2).Device according to any one of claims 1 to 5, comprising a timer cooperating with the drive means for moving the movable support (10,11) of the holding plate (8,9) in the direction of its first position ( B1) for a time corresponding to the time required to move the pusher (7) in its position (A2) adjacent to the set of blades (6) from its position in which the holding plate (8,9) is placed in contact with the bread (2). Dispositif suivant l'une quelconque des revendications 1 à 6, dans lequel ladite plaque de maintien (8,9) est élastique.Apparatus according to any one of claims 1 to 6, wherein said holding plate (8,9) is resilient. Dispositif suivant l'une quelconque des revendications 1 à 7, dans lequel un ressort de compression est monté entre la plaque de maintien (8,9) et son support (10,11).Device according to any one of claims 1 to 7, wherein a compression spring is mounted between the holding plate (8,9) and its support (10,11). Dispositif suivant l'une quelconque des revendications 1 à 8, dans lequel ladite plaque de maintien (8,9) avec le support mobile (10,11) correspondant sont prévus à chaque bord latéral de ladite base (5a), de sorte que la partie du pain découpé puisse être enserrée latéralement entre ces deux plaques de maintien (8,9).Device according to any one of claims 1 to 8, wherein said holding plate (8,9) with the corresponding movable support (10,11) are provided at each lateral edge of said base (5a), so that the part of the cut bread can be clamped laterally between these two holding plates (8,9). Dispositif suivant l'une quelconque des revendications 1 à 9, dans lequel ladite plaque de maintien (8,9) est courbée suivant la direction de coupe (13).Device according to any one of claims 1 to 9, wherein said holding plate (8,9) is curved in the cutting direction (13). Dispositif suivant l'une quelconque des revendications 1 à 10, dans lequel les moyens d'entrainement sont agencés d'une manière telle à pouvoir coulisser librement dans un rail (16) fixé au bâti (3) sous la base (5a) du compartiment de déchargement (5), sensiblement parallèlement à l'ensemble des lames (6), ces moyens d'entrainement comprenant au moins une crémaillère (17) qui est fixée à la plaque de maintien (8,9), une roue dentée (18) dont les dents coopèrent avec celles de la crémaillère (17), et un moteur (19) conçu pour entraîner la roue dentée (18) suivant un mouvement de rotation en vue de déplacer chaque plaque de maintien (8,9) entre sa première (B1) et sa deuxième position (B2) respective.Device according to any one of claims 1 to 10, wherein the drive means are arranged in such a way as to slide freely in a rail (16) fixed to the frame (3) under the base (5a) of the compartment unloading device (5), substantially parallel to the assembly of the blades (6), these drive means comprising at least one rack (17) which is fixed to the holding plate (8,9), a toothed wheel (18) whose teeth cooperate with those of the rack (17), and a motor (19) designed to drive the toothed wheel (18) in a rotational movement in order to moving each holding plate (8,9) between its first (B1) and its respective second (B2) position. Procédé de découpe automatique d'un pain en tranches suivant lequel le pain (2) est introduit dans un compartiment de chargement (4) d'un dispositif d'un pain à découper et déplacé suivant une direction de coupe (13) à travers un ensemble des lames (6) sur une base (4a,5a) sensiblement plane afin de découper le pain (2) en tranches, dans lequel le pain (2) entre dans un compartiment de déchargement (5) au fur et à mesure de sa découpe, caractérisé en ce que, lorsqu'une partie du pain découpé est présente dans le compartiment de déchargement (5), au moins une plaque de maintien (8,9) montée sur un support mobile (10,11) est avancée dans le compartiment de déchargement (5) vers la partie découpée du pain (2) suivant une direction sensiblement parallèle à ladite base (5a) et sensiblement perpendiculairement à la direction de coupe (13) jusqu'à ce que la plaque de maintien (8,9) entre en contact avec le pain (2) et en ce que le sens du déplacement de la plaque de maintien (8,9) est ensuite inversé au cours de la découpe du pain (2) en maintenant un contact entre le pain (2) et la plaque de maintien (8,9) jusqu'à la découpe complète du pain.A method of automatically cutting a sliced bread in which the bread (2) is introduced into a loading compartment (4) of a device of a bread to be cut and moved in a cutting direction (13) through a set of blades (6) on a base (4a, 5a) substantially planar for slicing the bread (2), wherein the bread (2) enters an unloading compartment (5) as and when cutting, characterized in that , when a portion of the cut bread is present in the unloading compartment (5), at least one holding plate (8,9) mounted on a movable support (10,11) is advanced in the unloading compartment (5) towards the cut portion of the bread (2) in a direction substantially parallel to said base (5a) and substantially perpendicular to the cutting direction (13) until the holding plate (8,9 ) comes into contact with the bread (2) and that the direction of movement of the plate holding (8,9) is then inverted during the cutting of the bread (2) maintaining a contact between the bread (2) and the holding plate (8,9) until the complete cutting of the bread. Procédé suivant la revendication 12, suivant lequel la largeur du pain (2), suivant la direction de coupe (13), est mesurée lorsque le pain (2) est dans le compartiment de chargement (4) et suivant lequel la plaque de maintien (8,9) est mise en contact avec la partie coupée du pain (2) lorsque au moins un quart de la largeur du pain est découpé et, de préférence, lorsque approximativement la moitié du pain est découpée.Method according to Claim 12, in which the width of the bread (2) in the cutting direction (13) is measured when the bread (2) is in the loading compartment (4) and in which the holding plate ( 8, 9) is brought into contact with the cut portion of the bread (2) when at least a quarter of the width of the bread is cut and, preferably, when approximately half of the bread is cut. Procédé suivant la revendication 12 ou 13, suivant lequel on fait glisser le pain (2) contre la plaque de maintien (8,9) au cours de sa découpe, de sorte que cette dernière se déforme élastiquement au fur et à mesure de l'avancement du pain (2) dans le compartiment de déchargement (5) pendant que le support (10,11) de la plaque de maintien (8,9) est éloigné du pain (2).Method according to Claim 12 or 13, in which the bread (2) is slid against the holding plate (8, 9) during its cutting, so that the latter is deformed elastically as it goes along. advancing the bread (2) in the unloading compartment (5) while the support (10,11) of the holding plate (8,9) is away from the bread (2).
EP14167454.9A 2013-05-07 2014-05-07 Machine for automatically cutting a loaf Active EP2801455B1 (en)

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BE1024083B1 (en) * 2015-10-21 2017-11-13 Jac S.A. Bread slicer with a pressure medium and a pushing member
CN107627348A (en) * 2016-07-19 2018-01-26 天津市圣红宝食品科技有限公司 A kind of enriched bread automatic splitting machine
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US1790022A (en) 1928-01-26 1931-01-27 Mac Roh Sales & Mfg Co Bread-handling machine
US2056134A (en) * 1931-11-05 1936-09-29 First Trust & Savings Bank Bread slicing machine
EP0157233A2 (en) 1984-04-05 1985-10-09 Dr. Hahn GmbH & Co. KG Sleeve for pins of fittings for doors, windows or the like
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BE1024083B1 (en) * 2015-10-21 2017-11-13 Jac S.A. Bread slicer with a pressure medium and a pushing member
US10081115B2 (en) 2015-10-21 2018-09-25 Jac S.A. Bread slicer with a thrust means and a pusher device
CN107627348A (en) * 2016-07-19 2018-01-26 天津市圣红宝食品科技有限公司 A kind of enriched bread automatic splitting machine
BE1027928B1 (en) * 2019-12-03 2021-08-03 Jac S A Machine for automatically slicing bread with a blockage sensor

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EP2801455B1 (en) 2016-06-29

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