EP0658087B1 - Installation for cutting sheet material - Google Patents

Installation for cutting sheet material Download PDF

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Publication number
EP0658087B1
EP0658087B1 EP93917860A EP93917860A EP0658087B1 EP 0658087 B1 EP0658087 B1 EP 0658087B1 EP 93917860 A EP93917860 A EP 93917860A EP 93917860 A EP93917860 A EP 93917860A EP 0658087 B1 EP0658087 B1 EP 0658087B1
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EP
European Patent Office
Prior art keywords
cutting
suction
sheets
installation
installation according
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.)
Expired - Lifetime
Application number
EP93917860A
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German (de)
French (fr)
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EP0658087A1 (en
Inventor
Roland Bouvarel
Régis LALLEMENT
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Lectra SA
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Lectra Systemes SA
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Publication of EP0658087A1 publication Critical patent/EP0658087A1/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
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0675—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form specially adapted for piles of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • 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
    • B26D7/01—Means for holding or positioning work
    • B26D7/018—Holding the work by suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2215/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B2215/006—Suction tables

Definitions

  • the present invention relates to an installation for cutting sheet materials.
  • the invention relates to an installation for cutting piles or mattresses of sheets of materials, in particular of textile materials, using a cutting head (laser beam, vibrating blade, etc.) , the displacements of the cutting head being obtained by numerical control.
  • a cutting head laser beam, vibrating blade, etc.
  • the installation essentially comprises a cutting machine proper 10 and a so-called quilting table 12.
  • the quilting table is used to make a prior stacking of different sheets, in particular of textile materials, to perform a simultaneous cutting of parts from all of the stacked leaves.
  • the cutting machine 10 comprises a frame 14, the upper surface of which constitutes the working face.
  • On the working face there is successively a feed conveyor 18 which is used to transfer the sheet mattresses from the feed end of the machine to the next area referenced 20 which is the actual cutting area.
  • the useful length of this zone is indicated by L.
  • a cutting conveyor 24 which is used to drive the stack of sheets during the cutting operation when the length of the sheet is greater than the length useful for cutting the machine L.
  • the cutting is carried out using a cutting 22 which is mounted on displacement means and in particular a gantry 26 which moves along the length of the cutting zone, the cutting head 22 being able to be moved along the length of the gantry 26.
  • an unloading conveyor 30 which is used to transfer the stacks of sheets once they have been cut.
  • the installation also includes inside the frame 14 a turbine suction device 32.
  • This suction installation is used to create a vacuum at the level of the conveyor 24 to ensure the driving of the stacks of sheets and to keep the sheets stationary. to be cut during the cutting phase. It should also be specified that in order to obtain good suction efficiency, it is generally necessary to have a film of waterproof material above the stack of sheets to be cut.
  • the film of impervious material which is stored in the form of a roll 32 is mounted on a roll holder 36 arranged in the middle zone of the feed conveyor 18.
  • Document US-A-4 328 726 describes an automatic cutting machine for stacked sheet materials in which the cutting table has large feeding and unloading zones on either side of the actual cutting zone at above which the cutting head moves. This machine therefore has a large size.
  • An object of the present invention is to provide an installation for cutting sheet materials of the type described above which has a reduced bulk compared to the machines of the prior art and makes it possible to optimize the use of consumables (support paper , waterproof film ).
  • Another object of the invention is to provide a cutting installation which has a reduced sound level.
  • Another object of the invention is to provide a cutting installation of the type mentioned above which facilitates the interventions of the personnel during the manual operations to be carried out and to automate the transfer of material from the depositing machine to the cutting machine. .
  • the automatic cutting equipment for sheet materials which includes at least one cutting device and at least one device for stacking sheets to be cut, the cutting device comprising a frame having a feed end capable of cooperating with the outlet end of the stacking device and an end for discharging the cut sheets, a head cutting unit mounted on displacement means with respect to the frame, a suction cutting conveyor connected to turbine means and an unloading conveyor
  • the frame has an upper face which defines from its feed end up to '' at its discharge end a first zone for partially placing the stack of sheet to be cut, said zone having a reduced length, a cutting zone below which the suction cutting conveyor and a vacuum conveyor are mounted unloading, in that the turbine means for creating the suction are arranged below the unloading conveyor, in this that said cutting head is mounted on the face of the displacement means turned towards the supply end of the frame and in that means for supporting at least one roll of waterproof film are mounted above said upper face of the frame substantially at its feed end.
  • the length of the cutting device which will later be called a cutter, is significantly reduced due to the elimination of the feed conveyor which is replaced by a zone for partially placing the stack of sheets whose length is reduced.
  • the feed conveyor which is replaced by a zone for partially placing the stack of sheets whose length is reduced.
  • sufficient space is freed up to allow easy manual positioning of the stack of cut sheets and waterproof film.
  • the cutting machine furthermore comprises in the zone for placing means to perforate the support sheet as it advances with the stack of sheets to be cut.
  • This characteristic makes it possible to supply the quilting table with non-perforated support sheets (in particular of conventional type paper), to carry out the deposition of the stack of material on the support sheet, to transfer by levitation by means of a cushion. of air under the support sheet, impermeable to air, said stack towards said perforation means where the support sheet is made permeable to air in order to allow, subsequently at the level of the cutting zone, the suction of air through the pile between the support sheet and an airtight film arranged above the stack.
  • the operating cost of the machine is reduced accordingly due to the less expensive nature of non-perforated support sheets.
  • Another advantage which results from this resides in the improvement of the conditions of transfer of the stack between the quilting table and the cutting table insofar as the prior art provided that the support sheet was fed in perforated form and therefore permeable, which was detrimental to the quality of the lift.
  • the suction means by turbine comprise control means for producing a first suction level when using the conveyors and a second suction level higher than the first during the cutting operation. using the cutting head.
  • This arrangement allows on the one hand to reduce the electrical energy consumption linked to the supply of the suction turbine by providing a maximum operating speed only during the effective cutting period. On the other hand, this arrangement makes it possible to reduce on average the noise level resulting from the operation of the suction turbine. Finally, this arrangement makes it possible to use, for the drive of the cutting conveyor, a motor of lower power than that which is usually provided, which reduces the electrical consumption.
  • the cutting installation comprises a plurality of fixed stacking devices or quilting tables which are arranged parallel to each other and a single cutting device or cutter, means for guiding the movement of the cutting device perpendicular to the stacking devices, and means for controlling the movements of the cutting device and its stop successively in front of each stacking device.
  • this embodiment of the invention is particularly advantageous since it makes it possible to use only a single cutter, the cost of which is very substantially greater than that of the quilting tables in cooperation with a plurality of tables. quilting, which also makes it possible to prepare suitable stacks of sheets on each quilting table when the cutter works in cooperation with another quilting table.
  • the installation comprises on the one hand a cutting device or cutter 40 and on the other hand a quilting table or stacking device 42.
  • the cutter 40 comprises an elongated frame 44 having a feed end 46 and a unloading end 48.
  • the upper face of the frame 44 which is referenced 50 defines on the one hand a zone for depositing the front end of the sheet mattresses 52, then a cutting zone 54 of useful length L, then a zone of unloading 56 essentially constituted by an unloading conveyor 58.
  • a suction cutting conveyor 60 as well as the cutting head 62 have also been shown below the cutting zone 54.
  • This cutting head 62 is mounted on support and displacement means essentially constituted by the gantry 64 which moves according to the direction of the length of the frame in the cutting area.
  • the cutting head 62 is movable in the direction X perpendicular to the direction of the length of the frame.
  • the cutting head can reach any point in the cutting zone 54.
  • the actual cutting head 62 is mounted relative to the gantry 64 in such a way that its active part is disposed relative to the gantry 64 towards the supply end 46 of the frame of the machine.
  • FIGS. 2 and 3 a structure 68 has also been shown for supporting two rolls of waterproof film 70 and 72.
  • the two rollers are mounted in the same vertical plane and are parallel to each other. Either the two rollers 70 and 72 are identical, which allows the replacement of one roller during operation while the other is in use, or these two rolls of waterproof film have different widths for cutting sheets of different width possibly in combination with a device for reducing the useful cutting surface such as a mask of flexible material on the unused part of the cutting zone.
  • FIGs 2 and 3 there is also shown in a simplified manner a device 74 for perforating a sheet of paper intended to facilitate the movement of the sheet mattresses on the quilting table, while subsequently allowing the passage of the air sucked in at the cutting area to maintain the pile.
  • the chimney 80 for output of the suction system 66 has been shown in a simplified manner.
  • the length of the cutting machine is very significantly reduced since this conveyor is replaced by a simple zone for depositing the front part of the stack of sheets, the length can be very short.
  • the support structure of the rollers 68 is disposed at the feed end 46 of the machine and that, the cutting head 62 being turned towards the feed end, it is not no longer necessary to pass the material under the movable assembly 64 for the initial positioning of the stack of sheets to be cut. This makes it easier for the operator to place the cutting mat on the cutting conveyor.
  • FIG. 4 we will describe a preferred embodiment of the suction assembly.
  • a suction pipe 80 which opens into the frame 44 and allows to put under vacuum the cutting conveyor 60 and therefore the cutting zone 54.
  • This pipe is connected to the inlet of the turbine d suction 82 via a settling tank 84.
  • the outlet of the turbine is connected to line 86, itself connected to a silencer not shown in the figure.
  • the turbine 82 is driven by a preferably electric motor 88 via a transmission system 90 of conventional type.
  • the electric motor 88 can be controlled by the associated control circuit 92 so as to be able to rotate at at least two different speeds.
  • Either the control system comprises a frequency converter which thus makes it possible to vary the speed of rotation of the motor 88 and, consequently, the suction level of the turbine 82, or the motor 88 comprises two separate windings and the circuit of control 92 allows the switch to connect either of the two motor windings to the power supply.
  • the electrical consumption and the sound level associated with the motor 88 driving the turbine 82 are lower due to the reduction in speed of said motor 88 during the low vacuum phase.
  • the suction device also includes means for reducing the temperature of the air at the outlet of the turbine. Indeed, without special precautions, the air outlet temperature is around 80 ° C.
  • Another objective is to reduce the thermal shocks applied to the drive motor 88 of the turbine and also to reduce the temperature of the air discharged outside and therefore the nuisance that it can create.
  • This additional device bearing the general reference 94 consists essentially of a pipe 96 which recovers the air driven by the fan 98 of the motor 88.
  • this pipe 96 an additional fan 100 is provided.
  • the air thus leaving the pipe 96 has a temperature of the order of 40 ° C.
  • the outlet 102 of the pipe 96 is connected to the outlet pipe 86 of the turbine 82.
  • the mixture of the two gas streams makes it possible to have an overall outlet stream whose temperature is of the order of 50 ° C.
  • the machine uses a strip of paper 110 that is not perforated and the cutter includes a perforation device shown at 74 in FIG. 2. That is to say, this device is placed in the deposit area 52.
  • the perforation device consists of a cylinder 112 whose length is equal to the width of the cutting table. This cylinder is provided on its periphery with perforation tools such as 114. It is mounted for free rotation on an axis 116 engaged in a movable cover 118. In this zone, the upper surface of the cutting table is provided with a recessed area 120 forming a loop for the paper, the latter passing between the cylinder 112 and the recessed area 120.
  • a jack 122 or any other equivalent device makes it possible to control the raising or lowering of the cover and as a corollary that of the cylinder 112 with its perforation tools 114 .
  • the perforation device is in the raised inactive position to allow the introduction of the support sheet.
  • the cover 118 is lowered and the perforation device is therefore in the active position. It is understood that the sheet of paper 110 is driven at the same time as the sheet mattress, referenced 124 in FIG. 6. The entrainment of the paper simultaneously causes the rotation of the cylinder 112 and therefore the progressive perforation of the paper 110.
  • This characteristic of the cutter makes it possible to use a paper of conventional type whose cost is significantly lower than that of a pre-perforated paper and above all to improve the transfer of the stack to an air cushion at the level of the quilting tables.
  • FIGS. 7 and 8 show an alternative embodiment of the installation for cutting sheet materials.
  • this installation there is a single cutter 130 and a plurality of quilting tables 132, 134, etc.
  • the quilting tables are arranged parallel to each other and aligned.
  • the single cutter 130 is mounted mobile on rails 136, 138 which are arranged perpendicular to the quilting tables.
  • the cutter 130 is provided with a motor controlling rollers such as 140 to cause the cutter 130 to move along the rails 136, 138.
  • a reference 142, 144 which cooperates with an electric detector 146 mounted on the side of the cutter 130.
  • the detector 146 is activated and controls the stopping of the drive motor of the cutter 130.
  • the quilting tables may preferably include conveyors such as 148 or air cushion systems to ensure correct transfer of the sheet mattresses from the table to the cutting area of the cutter 130.
  • each table for example the table 132, is provided with an electrical connection element 150 which is able to cooperate with an element of electrical connection 152 mounted on the supply end of the cutter.
  • connection element 152 is associated with a motor device 154 making it possible to automatically engage the two connection elements.
  • connection element of the cutter 130 is preferably associated with a mechanical device for compensating for misalignment, thus making it possible to compensate for any positioning errors of the cutter 130 opposite the corresponding quilting table.
  • connection device consists of a first movable assembly 152 and a second fixed assembly 150.
  • the first assembly 152 comprises the female connector 234, as shown in FIG. 10
  • the fixed part 150 comprises the male connector 236.
  • the mobile assembly 152 comprises a base 238 which is integral with the cutting machine 10 while the fixed part 150 is integral with the tables 132, 134 for quilting.
  • the direction in which the female connection element 234 must be moved in order to snap in with the male connection element 236 will be called the direction of connection marked by the arrow C.
  • adjustment marked by arrow A in FIG. 9 the direction orthogonal to the direction of connection C, parallel to the direction of movement of the machine 10.
  • On the base 238 are mounted two slides 240 and 242 which are parallel to the direction of connection C.
  • On the runners 242 is slidably mounted a first carriage 244 which is therefore movable relative to the base in the direction C.
  • the carriage 244 can be moved in the direction C under the effect of a motor member such than a cylinder, preferably double-acting, 246.
  • the body 246a of the jack is integral with the base 238 while the end of its rod 246b is linked to the first carriage 44.
  • On the first carriage 244 is mounted movable in translation a second carriage 248 which is movable relative to the first carriage along the adjustment direction A.
  • the second carriage 248 is provided with two holes 254 and 256 in which the guide rods 250 and 252 are engaged.
  • balanced return springs 260 and 262 are engaged on at least the guide rod 250 on either side of the carriage 248.
  • the carriage 248 is maintained, in the absence of external forces, in a central reference position.
  • an indexing finger 264 which extends in the direction of connection C towards the fixed part 150.
  • the indexing finger ends in a beveled end 266.
  • the female connection element 234 which is itself connected to a suitable electrical conductor 270.
  • the fixed assembly 150 of the connection device comprises on the one hand a centering and position adjustment cam 272 and the male connection element 236.
  • the cam assembly 272 is preferably constituted by a vertical plate 274 on which is fixed the male connector 236.
  • a centering system constituted by a plate 278 whose active faces 282 and 284 form two vertical inclined surface portions symmetrical with respect to a vertical plane PP 'parallel to the connection direction C. These two inclined guide faces converge towards an orifice 288.
  • connection device is as follows: when the cutting machine on which the movable part 230 of the connection device is fixed arrives in the desired position, identified for example by a sensor, this detection controls the activation of the jack 246.
  • the jack 246 pushes the first carriage 244 in the direction of connection C.
  • the second carriage 248 in the case where there is a misalignment, is displaced by the cooperation of the finger 66 with one of the inclined surfaces 282 or 284. The displacement continues until, under the effect of this centering, the end of the finger enters the orifice 288 extending the inclined guide faces.
  • the female connector 234 is perfectly aligned with the male connector 236 secured to the plate 274. The locking of the two connection elements can then be carried out under very good conditions since these two elements are perfectly aligned.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Details Of Cutting Devices (AREA)

Abstract

The invention relates to an automatic cutting installation for cutting sheet material, and comprising at least one cutting device (40) and at least one device (42) for stacking the sheets (124) to be cut. The cutting device comprises a frame (44), a cutting head (62) mounted on displacement means (64). The frame comprises, from its infeed end to its discharge end, a cutting area (54) under which is mounted the suction cutting conveyor (60) and a discharge conveyor (58). The turbine means (66) for creating the suction are arranged under the discharge conveyor, and the cutting head (62) is mounted on the face of the displacement means (64) turned towards the infeed end of the frame.

Description

La présente invention a pour objet une installation de découpe de matériaux en feuille.The present invention relates to an installation for cutting sheet materials.

De façon plus précise, l'invention concerne une installation pour la découpe de piles ou de matelas de feuilles de matériaux, notamment de matériaux textiles, à l'aide d'une tête de découpage (faisceau laser, lame vibrante,...), les déplacements de la tête de découpe étant obtenus par commande numérique.More specifically, the invention relates to an installation for cutting piles or mattresses of sheets of materials, in particular of textile materials, using a cutting head (laser beam, vibrating blade, etc.) , the displacements of the cutting head being obtained by numerical control.

De telles machines sont bien connues en elles-mêmes. Cependant, tout en donnant satisfaction, elles soulèvent certaines difficultés d'utilisation. D'une part, ces machines sont relativement encombrantes et il est donc nécessaire de disposer de surfaces importantes d'atelier pour les installer. En outre, ces machines sont le plus souvent relativement bruyantes du fait qu'elles font appel à des dispositifs d'aspiration puissants. Enfin, les interventions manuelles qui doivent être faites dans la chaîne opératoire mise en oeuvre par ces machines ne sont pas toujours aisées à effectuer par les opérateurs.Such machines are well known in themselves. However, while giving satisfaction, they raise certain difficulties of use. On the one hand, these machines are relatively bulky and it is therefore necessary to have large workshop areas to install them. In addition, these machines are most often relatively noisy because they use powerful suction devices. Finally, the manual interventions that must be made in the operating chain implemented by these machines are not always easy to perform by operators.

Pour mieux faire comprendre les problèmes qui se posent, on va décrire en référence à la figure 1 une installation de découpe de matériaux en feuille de type connu. L'installation comprend essentiellement une machine de découpe proprement dite 10 et une table dite de matelassage 12. La table de matelassage sert à réaliser un empilage préalable de différentes feuilles, notamment de matériaux textiles pour réaliser une découpe simultanée de pièces dans l'ensemble des feuilles empilées. La machine de découpe 10 comprend un bâti 14 dont la surface supérieure constitue la face de travail. Sur la face de travail, on trouve successivement un convoyeur d'alimentation 18 qui sert à transférer les matelas de feuilles de l'extrémité d'alimentation de la machine jusqu'à la zone suivante référencée 20 qui est la zone de découpe proprement dite. La longueur utile de cette zone est repérée par L. En-dessous de cette zone, on trouve un convoyeur de découpe 24 qui sert à entraîner la pile de feuilles durant l'opération de découpe lorsque la longueur de la feuille est supérieure à la longueur utile de découpe de la machine L. La découpe est réalisée à l'aide d'une tête de découpage 22 qui est montée sur des moyens de déplacement et notamment un portique 26 qui se déplace selon la longueur de la zone de découpe, la tête de découpe 22 pouvant être déplacée selon la longueur du portique 26. Enfin, on trouve un convoyeur de déchargement 30 qui sert à transférer les piles de feuilles une fois que celles-ci ont été découpées.To better understand the problems that arise, we will describe with reference to Figure 1 an installation for cutting sheet materials of known type. The installation essentially comprises a cutting machine proper 10 and a so-called quilting table 12. The quilting table is used to make a prior stacking of different sheets, in particular of textile materials, to perform a simultaneous cutting of parts from all of the stacked leaves. The cutting machine 10 comprises a frame 14, the upper surface of which constitutes the working face. On the working face, there is successively a feed conveyor 18 which is used to transfer the sheet mattresses from the feed end of the machine to the next area referenced 20 which is the actual cutting area. The useful length of this zone is indicated by L. Below this zone, there is a cutting conveyor 24 which is used to drive the stack of sheets during the cutting operation when the length of the sheet is greater than the length useful for cutting the machine L. The cutting is carried out using a cutting 22 which is mounted on displacement means and in particular a gantry 26 which moves along the length of the cutting zone, the cutting head 22 being able to be moved along the length of the gantry 26. Finally, there is an unloading conveyor 30 which is used to transfer the stacks of sheets once they have been cut.

L'installation comprend également à l'intérieur du bâti 14 un dispositif d'aspiration à turbine 32. Cette installation d'aspiration sert à créer une dépression au niveau du convoyeur 24 pour assurer l'entraînement des piles de feuilles et maintenir immobiles les feuilles à découper durant la phase de découpe. Il faut préciser en outre que pour obtenir une bonne efficacité de l'aspiration, il est généralement nécessaire de disposer au-dessus de la pile de feuilles à découper un film de matériau étanche. Dans les machines connues, le film de matériau étanche qui est stocké sous forme de rouleau 32 est monté sur un porte-rouleau 36 disposé dans la zone médiane du convoyeur d'alimentation 18.The installation also includes inside the frame 14 a turbine suction device 32. This suction installation is used to create a vacuum at the level of the conveyor 24 to ensure the driving of the stacks of sheets and to keep the sheets stationary. to be cut during the cutting phase. It should also be specified that in order to obtain good suction efficiency, it is generally necessary to have a film of waterproof material above the stack of sheets to be cut. In known machines, the film of impervious material which is stored in the form of a roll 32 is mounted on a roll holder 36 arranged in the middle zone of the feed conveyor 18.

Le document US-A-4 328 726 décrit une machine de découpe automatique de matériaux en feuilles empilées dans laquelle la table de découpe comporte des zones importantes d'alimentation et de déchargement de part et d'autre de la zone de découpe proprement dite au-dessus de laquelle se déplace la tête de découpe. Cette machine présente donc un encombrement important.Document US-A-4 328 726 describes an automatic cutting machine for stacked sheet materials in which the cutting table has large feeding and unloading zones on either side of the actual cutting zone at above which the cutting head moves. This machine therefore has a large size.

Un objet de la présente invention est de fournir une installation de découpe de matériaux en feuille du type décrit ci-dessus qui présente un encombrement réduit par rapport aux machines de l'art antérieur et permet d'optimiser l'utilisation des consommables (papier support, film étanche...).An object of the present invention is to provide an installation for cutting sheet materials of the type described above which has a reduced bulk compared to the machines of the prior art and makes it possible to optimize the use of consumables (support paper , waterproof film ...).

Un autre objet de l'invention est de fournir une installation de découpe qui présente un niveau sonore réduit.Another object of the invention is to provide a cutting installation which has a reduced sound level.

Un autre objet de l'invention est de fournir une installation de découpe du type mentionné ci-dessus qui facilite les interventions du personnel lors des opérations manuelles à effectuer et d'automatiser le transfert de matière de la machine de dépose à la machine de coupe.Another object of the invention is to provide a cutting installation of the type mentioned above which facilitates the interventions of the personnel during the manual operations to be carried out and to automate the transfer of material from the depositing machine to the cutting machine. .

Pour atteindre ce but, l'installation de découpe automatique de matériaux en feuille qui comprend au moins un dispositif de découpe et au moins un dispositif d'empilage de feuilles à découper, le dispositif de découpe comprenant un bâti présentant une extrémité d'alimentation apte à coopérer avec l'extrémité de sortie du dispositif d'empilage et une extrémité de déchargement des feuilles découpées, une tête de découpe montée sur des moyens de déplacement par rapport au bâti, un convoyeur de découpe à aspiration relié à des moyens par turbine et un convoyeur de déchargement se caractérise en ce que le bâti comporte une face supérieure qui définit depuis son extrémité d'alimentation jusqu'à son extrémité de déchargement une première zone de mise en place partielle de la pile de feuille à découper, ladite zone ayant une longueur réduite, une zone de découpe au-dessous de laquelle sont montés le convoyeur de coupe à aspiration et un convoyeur de déchargement, en ce que les moyens par turbine pour créer l'aspiration sont disposés en-dessous du convoyeur de déchargement, en ce que ladite tête de découpe est montée sur la face des moyens de déplacement tournée vers l'extrémité d'alimentation du bâti et en ce que des moyens de support d'au moins un rouleau de film étanche sont montés au-dessus de ladite face supérieure du bâti sensiblement à son extrémité d'alimentation.To achieve this goal, the automatic cutting equipment for sheet materials which includes at least one cutting device and at least one device for stacking sheets to be cut, the cutting device comprising a frame having a feed end capable of cooperating with the outlet end of the stacking device and an end for discharging the cut sheets, a head cutting unit mounted on displacement means with respect to the frame, a suction cutting conveyor connected to turbine means and an unloading conveyor is characterized in that the frame has an upper face which defines from its feed end up to '' at its discharge end a first zone for partially placing the stack of sheet to be cut, said zone having a reduced length, a cutting zone below which the suction cutting conveyor and a vacuum conveyor are mounted unloading, in that the turbine means for creating the suction are arranged below the unloading conveyor, in this that said cutting head is mounted on the face of the displacement means turned towards the supply end of the frame and in that means for supporting at least one roll of waterproof film are mounted above said upper face of the frame substantially at its feed end.

On comprend que, grâce aux dispositions de l'invention, la longueur du dispositif de découpe, qui sera ultérieurement appelé découpeur, est sensiblement réduite du fait de la suppression du convoyeur d'alimentation qui est remplacé par une zone de mise en place partielle de la pile de feuilles dont la longueur est réduite. Cependant, grâce à l'inversion du positionnement de la tête de découpe par rapport à ses moyens d'entraînement et grâce au report des moyens support de rouleau de film étanche, une place suffisante est dégagée pour autoriser une mise en place manuelle aisée de la pile de feuilles à découper ainsi que du film étanche.It is understood that, thanks to the provisions of the invention, the length of the cutting device, which will later be called a cutter, is significantly reduced due to the elimination of the feed conveyor which is replaced by a zone for partially placing the stack of sheets whose length is reduced. However, thanks to the reversal of the positioning of the cutting head relative to its drive means and thanks to the postponement of the waterproof film roll support means, sufficient space is freed up to allow easy manual positioning of the stack of cut sheets and waterproof film.

Selon un mode de réalisation préféré qui correspond au cas où une feuille support perforée doit être disposée en-dessous de la pile de feuilles à découper pour en faciliter le déplacement, la machine de découpe comporte en outre dans la zone de mise en place des moyens pour perforer la feuille support au fur et à mesure de son avance avec la pile de feuilles à découper.According to a preferred embodiment which corresponds to the case where a perforated support sheet must be placed below the stack of sheets to be cut to facilitate movement, the cutting machine furthermore comprises in the zone for placing means to perforate the support sheet as it advances with the stack of sheets to be cut.

Cette caractéristique permet d'alimenter la table de matelassage avec des feuilles support non perforées (notamment en papier de type classique), d'effectuer la dépose de la pile de matière sur la feuille support, de transférer par sustentation au moyen d'un coussin d'air sous la feuille support, imperméable à l'air, ladite pile vers lesdits moyens de perforation où la feuille support est rendue perméable à l'air en vue de permettre, par la suite au niveau de la zone de coupe, l'aspiration de l'air au travers de la pile entre la feuille support et un film étanche à l'air disposé au-dessus de la pile. Le coût de fonctionnement de la machine est diminué d'autant du fait du caractère moins onéreux de feuilles support non perforées. Un autre avantage qui en découle réside dans l'amélioration des conditions de transfert de la pile entre la table de matelassage et la table de découpe dans la mesure où l'art antérieur prévoyait que la feuille support était alimentée sous forme perforée et donc perméable, ce qui nuisait à la qualité de la sustentation.This characteristic makes it possible to supply the quilting table with non-perforated support sheets (in particular of conventional type paper), to carry out the deposition of the stack of material on the support sheet, to transfer by levitation by means of a cushion. of air under the support sheet, impermeable to air, said stack towards said perforation means where the support sheet is made permeable to air in order to allow, subsequently at the level of the cutting zone, the suction of air through the pile between the support sheet and an airtight film arranged above the stack. The operating cost of the machine is reduced accordingly due to the less expensive nature of non-perforated support sheets. Another advantage which results from this resides in the improvement of the conditions of transfer of the stack between the quilting table and the cutting table insofar as the prior art provided that the support sheet was fed in perforated form and therefore permeable, which was detrimental to the quality of the lift.

Selon une autre caractéristique préférée, les moyens d'aspiration par turbine comportent des moyens de commande pour produire un premier niveau d'aspiration lors de l'utilisation des convoyeurs et un deuxième niveau d'aspiration supérieur au premier lors de l'opération de découpe à l'aide de la tête de découpe.According to another preferred characteristic, the suction means by turbine comprise control means for producing a first suction level when using the conveyors and a second suction level higher than the first during the cutting operation. using the cutting head.

Cette disposition permet d'une part de réduire la consommation d'énergie électrique liée à l'alimentation de la turbine d'aspiration en ne prévoyant un régime de fonctionnement maximal que pendant la période effective de découpe. D'autre part, cette disposition permet de réduire en moyenne le niveau sonore résultant du fonctionnement de la turbine d'aspiration. Enfin, cette disposition permet d'utiliser, pour l'entraînement du convoyeur de coupe, un moteur de plus faible puissance que celui qui est prévu habituellement, ce qui diminue la consommation électrique.This arrangement allows on the one hand to reduce the electrical energy consumption linked to the supply of the suction turbine by providing a maximum operating speed only during the effective cutting period. On the other hand, this arrangement makes it possible to reduce on average the noise level resulting from the operation of the suction turbine. Finally, this arrangement makes it possible to use, for the drive of the cutting conveyor, a motor of lower power than that which is usually provided, which reduces the electrical consumption.

Selon encore un mode préféré de mise en oeuvre de l'invention, l'installation de découpe comporte une pluralité de dispositifs d'empilage fixe ou tables de matelassage qui sont disposés parallèlement les uns aux autres et un seul dispositif de découpe ou découpeur, des moyens pour guider le déplacement du dispositif de découpe perpendiculairement aux dispositifs d'empilage, et des moyens pour commander les déplacements du dispositif de découpe et son arrêt successivement devant chaque dispositif d'empilage.According to yet a preferred embodiment of the invention, the cutting installation comprises a plurality of fixed stacking devices or quilting tables which are arranged parallel to each other and a single cutting device or cutter, means for guiding the movement of the cutting device perpendicular to the stacking devices, and means for controlling the movements of the cutting device and its stop successively in front of each stacking device.

On comprend que ce mode de mise en oeuvre de l'invention est particulièrement intéressant puisqu'il permet de n'utiliser qu'un seul découpeur dont le coût est très sensiblement supérieur à celui des tables de matelassage en coopération avec une pluralité de tables de matelassage, ce qui permet également de préparer les empilements de feuilles convenables sur chaque table de matelassage lorsque le découpeur travaille en coopération avec une autre table de matelassage.It is understood that this embodiment of the invention is particularly advantageous since it makes it possible to use only a single cutter, the cost of which is very substantially greater than that of the quilting tables in cooperation with a plurality of tables. quilting, which also makes it possible to prepare suitable stacks of sheets on each quilting table when the cutter works in cooperation with another quilting table.

D'autres caractéristiques et avantages de la présente invention apparaîtront mieux à la lecture de la description qui suit de plusieurs modes de réalisation de l'invention donnés à titre d'exemples non limitatifs. La description se réfère aux figures annexées sur lesquelles :

  • la figure 1, déjà décrite, montre de façon simplifiée une installation de découpe selon l'art antérieur ;
  • la figure 2 montre une installation de découpe conforme à l'invention en vue en élévation ;
  • la figure 3 est une vue de dessus de l'installation de découpe représentée sur la figure 2 ;
  • la figure 4 est un schéma montrant le dispositif d'aspiration de la machine de découpe ;
  • les figures 5 et 6 représentent un dispositif de perforation de papier en position de repos et en position active utilisable dans la machine de découpe selon l'invention ;
  • les figures 7 et 8 représentent respectivement en vue de dessus et en vue en élévation une installation de découpe comportant un seul découpeur et une pluralité de tables de matelassage ; et
  • les figures 9 et 10 montrent en vue de dessous et en vue de côté un dispositif de connexion utilisable dans l'installation des figures 7 et 8.
Other characteristics and advantages of the present invention will appear better on reading the following description of several embodiments of the invention given by way of nonlimiting examples. The description refers to the appended figures in which:
  • Figure 1, already described, shows in a simplified manner a cutting installation according to the prior art;
  • Figure 2 shows a cutting installation according to the invention in elevation view;
  • Figure 3 is a top view of the cutting installation shown in Figure 2;
  • Figure 4 is a diagram showing the suction device of the cutting machine;
  • Figures 5 and 6 show a paper punching device in the rest position and in the active position usable in the cutting machine according to the invention;
  • Figures 7 and 8 show respectively in top view and in elevational view a cutting installation comprising a single cutter and a plurality of quilting tables; and
  • FIGS. 9 and 10 show in bottom view and in side view a connection device usable in the installation of FIGS. 7 and 8.

En se référant tout d'abord aux figures 2 et 3, on va décrire l'ensemble de l'installation de découpe selon un premier mode de mise en oeuvre de l'invention. L'installation comporte d'une part un dispositif de découpe ou découpeur 40 et d'autre part une table de matelassage ou dispositif d'empilage 42. Le découpeur 40 comporte un bâti de forme allongée 44 présentant une extrémité d'alimentation 46 et une extrémité de déchargement 48. La face supérieure du bâti 44 qui est référencée 50 définit d'une part une zone de dépose de l'extrémité avant des matelas de feuilles 52, puis une zone de découpe 54 de longueur utile L, puis une zone de déchargement 56 essentiellement constituée par un convoyeur de déchargement 58. Sur la figure 2, on a également fait apparaître en-dessous de la zone 54 de découpe un convoyeur de découpe à aspiration 60 ainsi que la tête de découpe 62. Cette tête de découpe 62 est montée sur des moyens de support et de déplacement essentiellement constitués par le portique 64 qui se déplace selon la direction de la longueur du bâti dans la zone de découpe. La tête de découpe 62 est mobile selon la direction X perpendiculaire à la direction de la longueur du bâti. Ainsi, comme cela est bien connu, la tête de découpe peut atteindre n'importe quel point de la zone de découpe 54. Comme le montre clairement la figure, la tête de découpe proprement dite 62 est montée par rapport au portique 64 de telle manière que sa partie active soit disposée par rapport au portique 64 vers l'extrémité d'alimentation 46 du bâti de la machine.Referring first to Figures 2 and 3, we will describe the entire cutting installation according to a first embodiment of the invention. The installation comprises on the one hand a cutting device or cutter 40 and on the other hand a quilting table or stacking device 42. The cutter 40 comprises an elongated frame 44 having a feed end 46 and a unloading end 48. The upper face of the frame 44 which is referenced 50 defines on the one hand a zone for depositing the front end of the sheet mattresses 52, then a cutting zone 54 of useful length L, then a zone of unloading 56 essentially constituted by an unloading conveyor 58. In FIG. 2, a suction cutting conveyor 60 as well as the cutting head 62 have also been shown below the cutting zone 54. This cutting head 62 is mounted on support and displacement means essentially constituted by the gantry 64 which moves according to the direction of the length of the frame in the cutting area. The cutting head 62 is movable in the direction X perpendicular to the direction of the length of the frame. Thus, as is well known, the cutting head can reach any point in the cutting zone 54. As clearly shown in the figure, the actual cutting head 62 is mounted relative to the gantry 64 in such a way that its active part is disposed relative to the gantry 64 towards the supply end 46 of the frame of the machine.

On a également représenté sur la figure 2 le caisson de l'ensemble à turbine d'aspiration 66 qui est disposé en-dessous du convoyeur de déchargement 58. Comme cela est bien connu, à partir du caisson 66 partent des conduites pour créer une aspiration au niveau du convoyeur de découpe 60, et donc de la zone de découpe 54. Sur les figures 2 et 3, on a également fait apparaître une structure 68 de support de deux rouleaux de film étanche 70 et 72. Les deux rouleaux sont montés dans un même plan vertical et sont parallèles entre eux. Soit les deux rouleaux 70 et 72 sont identiques, ce qui permet en cours de fonctionnement le remplacement d'un rouleau alors que l'autre est en cours d'utilisation, soit ces deux rouleaux de film étanche ont des largeurs différentes pour la découpe de feuilles de largeur différente éventuellement en association avec un dispositif de réduction de la surface utile de coupe tel qu'un masque en matériau souple sur la partie non utilisée de la zone de coupe.Also shown in Figure 2 the box of the suction turbine assembly 66 which is arranged below the unloading conveyor 58. As is well known, from the box 66 leave the pipes to create a suction at the cutting conveyor 60, and therefore at the cutting zone 54. In FIGS. 2 and 3, a structure 68 has also been shown for supporting two rolls of waterproof film 70 and 72. The two rollers are mounted in the same vertical plane and are parallel to each other. Either the two rollers 70 and 72 are identical, which allows the replacement of one roller during operation while the other is in use, or these two rolls of waterproof film have different widths for cutting sheets of different width possibly in combination with a device for reducing the useful cutting surface such as a mask of flexible material on the unused part of the cutting zone.

Sur les figures 2 et 3, on a également représenté de façon simplifiée un dispositif 74 de perforation d'une feuille de papier destinée à faciliter le déplacement des matelas de feuilles sur la table de matelassage, tout en permettant par la suite le passage de l'air aspiré au niveau de la zone de coupe pour le maintien de la pile. Enfin, sur cette figure, on a fait apparaître de façon simplifiée la cheminée 80 de sortie du système d'aspiration 66.In Figures 2 and 3, there is also shown in a simplified manner a device 74 for perforating a sheet of paper intended to facilitate the movement of the sheet mattresses on the quilting table, while subsequently allowing the passage of the air sucked in at the cutting area to maintain the pile. Finally, in this figure, the chimney 80 for output of the suction system 66 has been shown in a simplified manner.

On comprend dès à présent que, grâce à la suppression du convoyeur d'alimentation, la longueur de la machine de découpe est très sensiblement réduite puisque ce convoyeur est remplacé par une simple zone de dépose de la partie avant de la pile de feuilles dont la longueur peut être très réduite. Il faut noter également que, pour permettre la mise en place manuelle aisée de l'empilement de feuilles et du film étanche dans la zone de coupe 54, la structure de support des rouleaux 68 est disposée à l'extrémité d'alimentation 46 de la machine et que, la tête de découpe 62 étant tournée vers l'extrémité d'alimentation, il n'est plus nécessaire de passer la matière sous l'ensemble mobile 64 pour la mise en place initiale de la pile de feuilles à découper. Cela facilite, pour l'opérateur, la mise en place du matelas à découper sur le convoyeur de coupe.We can understand now that, thanks to the elimination of the feed conveyor, the length of the cutting machine is very significantly reduced since this conveyor is replaced by a simple zone for depositing the front part of the stack of sheets, the length can be very short. It should also be noted that, to allow easy manual placement of the stack of sheets and film sealed in the cutting zone 54, the support structure of the rollers 68 is disposed at the feed end 46 of the machine and that, the cutting head 62 being turned towards the feed end, it is not no longer necessary to pass the material under the movable assembly 64 for the initial positioning of the stack of sheets to be cut. This makes it easier for the operator to place the cutting mat on the cutting conveyor.

En se référant maintenant à la figure 4, on va décrire un mode préféré de réalisation de l'ensemble d'aspiration. Sur cette figure, on a représenté une conduite d'aspiration 80 qui débouche dans le bâti 44 et permet de mettre sous dépression le convoyeur de découpe 60 et donc la zone de découpe 54. Cette conduite est raccordée à l'entrée de la turbine d'aspiration 82 par l'intermédiaire d'une boîte de décantation 84. La sortie de la turbine est raccordée à la conduite 86, elle-même raccordée à un silencieux non représenté sur la figure. La turbine 82 est entraînée par un moteur de préférence électrique 88 par l'intermédiaire d'un système de transmission 90 de type classique. Selon un mode préféré de mise en oeuvre de l'invention, le moteur électrique 88 peut être commandé par le circuit de commande associé 92 afin de pouvoir tourner à au moins deux vitesses différentes. Soit le système de commande comporte un variateur de fréquence qui permet ainsi de faire varier la vitesse de rotation du moteur 88 et, en conséquence, le niveau d'aspiration de la turbine 82, soit le moteur 88 comporte deux enroulements distincts et le circuit de commande 92 permet au commutateur de raccorder à l'alimentation électrique l'un ou l'autre des deux enroulements du moteur.Referring now to Figure 4, we will describe a preferred embodiment of the suction assembly. In this figure, there is shown a suction pipe 80 which opens into the frame 44 and allows to put under vacuum the cutting conveyor 60 and therefore the cutting zone 54. This pipe is connected to the inlet of the turbine d suction 82 via a settling tank 84. The outlet of the turbine is connected to line 86, itself connected to a silencer not shown in the figure. The turbine 82 is driven by a preferably electric motor 88 via a transmission system 90 of conventional type. According to a preferred embodiment of the invention, the electric motor 88 can be controlled by the associated control circuit 92 so as to be able to rotate at at least two different speeds. Either the control system comprises a frequency converter which thus makes it possible to vary the speed of rotation of the motor 88 and, consequently, the suction level of the turbine 82, or the motor 88 comprises two separate windings and the circuit of control 92 allows the switch to connect either of the two motor windings to the power supply.

La possibilité d'avoir deux niveaux d'aspiration est intéressante. En effet, lors des phases d'entraînement du matelas à découper, il n'est pas nécessaire d'avoir une dépression très importante. En revanche, lors des phases de coupe, il est nécessaire de disposer d'une aspiration importante afin d'assurer une immobilisation parfaite de la pile de matériau en feuilles à découper.The possibility of having two suction levels is interesting. Indeed, during the training phases of the cutting mattress, it is not necessary to have a very high depression. On the other hand, during the cutting phases, it is necessary to have a large suction in order to ensure perfect immobilization of the stack of material in sheets to be cut.

Il faut également noter qu'en réduisant le niveau d'aspiration lors de l'utilisation du convoyeur de découpe, il est possible d'utiliser un moteur de puissance réduite et donc de diminuer la consommation électrique.It should also be noted that by reducing the suction level when using the cutting conveyor, it is possible to use a motor with reduced power and therefore reduce electrical consumption.

Par ailleurs, la consommation électrique et le niveau sonore liés au moteur 88 d'entraînement de la turbine 82 sont plus faibles du fait de la réduction de vitesse dudit moteur 88 lors de la phase de faible dépression.Furthermore, the electrical consumption and the sound level associated with the motor 88 driving the turbine 82 are lower due to the reduction in speed of said motor 88 during the low vacuum phase.

Comme on le voit sur la figure 4, le dispositif d'aspiration comporte également des moyens pour réduire la température de l'air à la sortie de la turbine. En effet, sans précaution particulière, la température de sortie de l'air est de l'ordre de 80°C.As seen in Figure 4, the suction device also includes means for reducing the temperature of the air at the outlet of the turbine. Indeed, without special precautions, the air outlet temperature is around 80 ° C.

Un autre objectif est de réduire les chocs thermiques appliqués au moteur d'entraînement 88 de la turbine et également de réduire la température de l'air refoulé à l'extérieur et donc la nuisance qu'il peut créer.Another objective is to reduce the thermal shocks applied to the drive motor 88 of the turbine and also to reduce the temperature of the air discharged outside and therefore the nuisance that it can create.

Ce dispositif additionnel portant la référence générale 94 est constitué essentiellement par une conduite 96 qui récupère l'air entraîné par le ventilateur 98 du moteur 88. Dans cette conduite 96, un ventilateur additionnel 100 est prévu. L'air sortant ainsi de la conduite 96 a une température de l'ordre de 40°C. La sortie 102 de la conduite 96 est raccordée sur la conduite 86 de sortie de la turbine 82. Le mélange des deux flux gazeux permet d'avoir un flux de sortie global dont la température est de l'ordre de 50°C.This additional device bearing the general reference 94 consists essentially of a pipe 96 which recovers the air driven by the fan 98 of the motor 88. In this pipe 96, an additional fan 100 is provided. The air thus leaving the pipe 96 has a temperature of the order of 40 ° C. The outlet 102 of the pipe 96 is connected to the outlet pipe 86 of the turbine 82. The mixture of the two gas streams makes it possible to have an overall outlet stream whose temperature is of the order of 50 ° C.

Dans certains cas, on a vu qu'il était intéressant de disposer en-dessous du matelas de feuilles à découper une feuille support pour faciliter le déplacement du matelas et éviter les déformations de la pile lors des transferts. Cependant, il faut bien entendu que cette feuille soit perforée pour qu'elle permette le maintien par dépression du matelas de feuilles au niveau de la zone de coupe.In some cases, we have seen that it was advantageous to have a sheet of cut-out sheets below the mattress to facilitate the movement of the mattress and avoid deformation of the stack during transfers. However, it must of course be that this sheet is perforated so that it allows the vacuum mattress to hold the sheet at the cutting zone.

Selon un mode préféré de réalisation, la machine utilise une bande de papier 110 non perforée et le découpeur comporte un dispositif de perforation représenté en 74 sur la figure 2. C'est-à-dire que ce dispositif est placé dans la zone de dépose 52. Comme le montrent mieux les figures 5 et 6, le dispositif de perforation est constitué par un cylindre 112 dont la longueur est égale à la largeur de la table de découpe. Ce cylindre est muni sur sa périphérie d'outils de perforation tels que 114. Il est monté libre en rotation sur un axe 116 engagé dans un capot mobile 118. Dans cette zone, la surface supérieure de la table de découpe est munie d'une zone en creux 120 formant une boucle pour le papier, celui-ci passant entre le cylindre 112 et la zone en creux 120. Un vérin 122 ou tout autre dispositif équivalent permet de commander la montée ou la descente du capot et corollairement celle du cylindre 112 avec ses outils de perforation 114.According to a preferred embodiment, the machine uses a strip of paper 110 that is not perforated and the cutter includes a perforation device shown at 74 in FIG. 2. That is to say, this device is placed in the deposit area 52. As FIGS. 5 and 6 show better, the perforation device consists of a cylinder 112 whose length is equal to the width of the cutting table. This cylinder is provided on its periphery with perforation tools such as 114. It is mounted for free rotation on an axis 116 engaged in a movable cover 118. In this zone, the upper surface of the cutting table is provided with a recessed area 120 forming a loop for the paper, the latter passing between the cylinder 112 and the recessed area 120. A jack 122 or any other equivalent device makes it possible to control the raising or lowering of the cover and as a corollary that of the cylinder 112 with its perforation tools 114 .

Sur la figure 5, le dispositif de perforation est en position levée inactive pour permettre l'introduction de la feuille support. Au contraire, sur la figure 6, le capot 118 est abaissé et le dispositif de perforation est donc en position active. On comprend que la feuille de papier 110 est entraînée en même temps que le matelas de feuille, référencé 124 sur la figure 6. L'entraînement du papier provoque simultanément la rotation du cylindre 112 et donc la perforation progressive du papier 110.In FIG. 5, the perforation device is in the raised inactive position to allow the introduction of the support sheet. On the contrary, in FIG. 6, the cover 118 is lowered and the perforation device is therefore in the active position. It is understood that the sheet of paper 110 is driven at the same time as the sheet mattress, referenced 124 in FIG. 6. The entrainment of the paper simultaneously causes the rotation of the cylinder 112 and therefore the progressive perforation of the paper 110.

Cette caractéristique du découpeur permet d'utiliser un papier de type classique dont le coût est sensiblement inférieur à celui d'un papier pré perforé et surtout d'améliorer le transfert de la pile sur coussin d'air au niveau des tables de matelassage.This characteristic of the cutter makes it possible to use a paper of conventional type whose cost is significantly lower than that of a pre-perforated paper and above all to improve the transfer of the stack to an air cushion at the level of the quilting tables.

Sur les figures 7 et 8, on a représenté une variante de réalisation de l'installation de découpe de matériaux en feuille. Dans cette installation, on trouve un seul découpeur 130 et une pluralité de tables de matelassage 132, 134, etc. Les tables de matelassage sont disposées parallèlement les unes aux autres et alignées. Le découpeur unique 130 est monté mobile sur des rails 136, 138 qui sont disposés perpendiculairement aux tables de matelassage. Le découpeur 130 est muni d'un moteur commandant des galets tels que 140 pour provoquer les déplacements du découpeur 130 le long des rails 136, 138. En regard de chaque table de matelassage est prévu un repère 142, 144 qui coopère avec un détecteur électrique 146 monté sur le côté du découpeur 130. Ainsi, lorsque le découpeur arrive en regard de la table de matelassage avec laquelle il doit coopérer, le détecteur 146 est activé et commande l'arrêt du moteur d'entraînement du découpeur 130.FIGS. 7 and 8 show an alternative embodiment of the installation for cutting sheet materials. In this installation, there is a single cutter 130 and a plurality of quilting tables 132, 134, etc. The quilting tables are arranged parallel to each other and aligned. The single cutter 130 is mounted mobile on rails 136, 138 which are arranged perpendicular to the quilting tables. The cutter 130 is provided with a motor controlling rollers such as 140 to cause the cutter 130 to move along the rails 136, 138. Next to each quilting table is provided a reference 142, 144 which cooperates with an electric detector 146 mounted on the side of the cutter 130. Thus, when the cutter comes opposite the quilting table with which it must cooperate, the detector 146 is activated and controls the stopping of the drive motor of the cutter 130.

On comprend qu'ainsi le coût de l'ensemble de l'installation est réduit puisque sa partie la plus onéreuse, à savoir le découpeur, est unique. Cependant, la présence de différentes tables de matelassage 132, 134 permet de préparer le matelas de feuilles sur une table pendant que le découpeur travaille avec une autre table.It is understood that thus the cost of the entire installation is reduced since its most expensive part, namely the cutter, is unique. However, the presence of different quilting tables 132, 134 makes it possible to prepare the sheet mattress on a table while the cutter is working with another table.

Les tables de matelassage peuvent comprendre de préférence des convoyeurs tels que 148 ou des systèmes à coussin d'air pour assurer un transfert correct des matelas de feuilles depuis la table jusqu'à la zone de coupe du découpeur 130. Pour assurer la synchronisation du convoyeur de coupe 60 du découpeur 130 et des moyens de transfert du matelas depuis les différentes tables de matelassage 132, 134, chaque table, par exemple la table 132, est munie d'un élément de connexion électrique 150 qui est apte à coopérer avec un élément de connexion électrique 152 monté sur l'extrémité d'alimentation du découpeur.The quilting tables may preferably include conveyors such as 148 or air cushion systems to ensure correct transfer of the sheet mattresses from the table to the cutting area of the cutter 130. To ensure synchronization of the conveyor cutting 60 of the cutter 130 and means for transferring the mattress from the different quilting tables 132, 134, each table, for example the table 132, is provided with an electrical connection element 150 which is able to cooperate with an element of electrical connection 152 mounted on the supply end of the cutter.

De préférence, l'élément de connexion 152 est associé à un dispositif moteur 154 permettant de réaliser automatiquement l'encliquetage des deux éléments de connexion. En outre, l'élément de connexion du découpeur 130 est de préférence associé à un dispositif mécanique de rattrapage de désalignement permettant ainsi de compenser les éventuelles erreurs de positionnement du découpeur 130 en face de la table de matelassage correspondante.Preferably, the connection element 152 is associated with a motor device 154 making it possible to automatically engage the two connection elements. In addition, the connection element of the cutter 130 is preferably associated with a mechanical device for compensating for misalignment, thus making it possible to compensate for any positioning errors of the cutter 130 opposite the corresponding quilting table.

Les figures 9 et 10 illustrent un tel dispositif de connexion électrique Le dispositif de connexion se compose d'un premier ensemble mobile 152 et d'un deuxième ensemble fixe 150. Le premier ensemble 152 comporte le connecteur femelle 234, comme le montre la figure 10, tandis que la partie fixe 150 comporte le connecteur mâle 236. L'ensemble mobile 152 comporte une embase 238 qui est solidaire de la machine de découpe 10 tandis que la partie fixe 150 est solidaire des tables 132, 134 de matelassage.Figures 9 and 10 illustrate such an electrical connection device. The connection device consists of a first movable assembly 152 and a second fixed assembly 150. The first assembly 152 comprises the female connector 234, as shown in FIG. 10 , while the fixed part 150 comprises the male connector 236. The mobile assembly 152 comprises a base 238 which is integral with the cutting machine 10 while the fixed part 150 is integral with the tables 132, 134 for quilting.

Dans la suite de la description, on appellera direction de connexion repérée par la flèche C la direction selon laquelle l'élément de connexion femelle 234 doit être déplacé pour venir s'encliqueter avec l'élément de connexion mâle 236. On appellera direction d'ajustement repérée par la flèche A sur la figure 9 la direction orthogonale à la direction de connexion C, parallèle à la direction de déplacement de la machine 10. Sur l'embase 238 sont montées deux glissières 240 et 242 qui sont parallèles à la direction de connexion C. Sur les glissières 242 est monté à coulissement un premier chariot 244 qui est donc mobile par rapport à l'embase selon la direction C. Le chariot 244 peut être déplacé selon la direction C sous l'effet d'un organe moteur tel qu'un vérin, de préférence à double effet, 246. Le corps 246a du vérin est solidaire de l'embase 238 tandis que l'extrémité de sa tige 246b est liée au premier chariot 44. Sur le premier chariot 244 est monté mobile en translation un deuxième chariot 248 qui lui est mobile par rapport au premier chariot selon la direction d'ajustement A. Pour cela, deux tiges de guidage 250 et 252 parallèles à la direction A et disposées dans un même plan vertical, si l'on considère que l'embase 238 est horizontale, ont leurs extrémités qui sont solidaires des parties 244a et 244b du premier chariot 244. Le deuxième chariot 248 est muni de deux perçages 254 et 256 dans lesquels sont engagées les tiges de guidage 250 et 252. En outre, des ressorts de rappel équilibrés 260 et 262 sont engagés sur au moins la tige de guidage 250 de part et d'autre du chariot 248. Ainsi, sous l'effet de ces deux ressorts, le chariot 248 est maintenu, en l'absence de forces extérieures, dans une position médiane de référence. Sur le deuxième chariot 248 est monté un doigt d'indexage 264 qui s'étend selon la direction de connexion C vers la partie fixe 150. Le doigt d'indexage se termine par une extrémité en biseau 266. Sur le deuxième chariot 248 est également monté l'élément femelle de connexion 234 qui est lui-même relié à un conducteur électrique convenable 270.In the following description, the direction in which the female connection element 234 must be moved in order to snap in with the male connection element 236 will be called the direction of connection marked by the arrow C. adjustment marked by arrow A in FIG. 9 the direction orthogonal to the direction of connection C, parallel to the direction of movement of the machine 10. On the base 238 are mounted two slides 240 and 242 which are parallel to the direction of connection C. On the runners 242 is slidably mounted a first carriage 244 which is therefore movable relative to the base in the direction C. The carriage 244 can be moved in the direction C under the effect of a motor member such than a cylinder, preferably double-acting, 246. The body 246a of the jack is integral with the base 238 while the end of its rod 246b is linked to the first carriage 44. On the first carriage 244 is mounted movable in translation a second carriage 248 which is movable relative to the first carriage along the adjustment direction A. For this, two guide rods 250 and 252 parallel to the direction A and arranged in the same vertical plane, if we consider that the base 238 is horizontal, have their ends which are integral parts 244a and 244b of the first carriage 244. The second carriage 248 is provided with two holes 254 and 256 in which the guide rods 250 and 252 are engaged. In addition, balanced return springs 260 and 262 are engaged on at least the guide rod 250 on either side of the carriage 248. Thus, under the effect of these two springs, the carriage 248 is maintained, in the absence of external forces, in a central reference position. On the second carriage 248 is mounted an indexing finger 264 which extends in the direction of connection C towards the fixed part 150. The indexing finger ends in a beveled end 266. On the second carriage 248 is also mounted the female connection element 234 which is itself connected to a suitable electrical conductor 270.

L'ensemble fixe 150 du dispositif de connexion comprend d'une part une came de centrage et d'ajustement de position 272 et l'élément de connexion mâle 236. L'ensemble formant came 272 est de préférence constitué par une plaque verticale 274 sur laquelle est fixé le connecteur mâle 236. Dans cette plaque 274 qui est percée d'un orifice 276 est monté un système de centrage constitué par une plaque 278 dont les faces actives 282 et 284 forment deux portions de surface inclinées verticales symétriques par rapport à un plan vertical PP' parallèle à la direction de connexion C. Ces deux faces de guidage inclinées convergent vers un orifice 288.The fixed assembly 150 of the connection device comprises on the one hand a centering and position adjustment cam 272 and the male connection element 236. The cam assembly 272 is preferably constituted by a vertical plate 274 on which is fixed the male connector 236. In this plate 274 which is pierced with an orifice 276 is mounted a centering system constituted by a plate 278 whose active faces 282 and 284 form two vertical inclined surface portions symmetrical with respect to a vertical plane PP 'parallel to the connection direction C. These two inclined guide faces converge towards an orifice 288.

Le fonctionnement du dispositif de connexion est le suivant : lorsque la machine de découpe sur laquelle est fixée la partie mobile 230 du dispositif de connexion arrive dans la position voulue, repérée par exemple par un capteur, cette détection commande l'activation du vérin 246. Le vérin 246 pousse le premier chariot 244 selon la direction de connexion C. Lorsque l'extrémité 266 du doigt d'indexage 264 arrive en contact avec la pièce 278 formant came, le deuxième chariot 248, dans le cas où il y a un désalignement, est déplacé par la coopération du doigt 66 avec l'une des surfaces inclinées 282 ou 284. Le déplacement se poursuit jusqu'à ce que, sous l'effet de ce centrage, l'extrémité du doigt pénètre dans l'orifice 288 prolongeant les faces inclinées de guidage. Dans cette situation, le connecteur femelle 234 est parfaitement aligné avec le connecteur mâle 236 solidaire de la plaque 274. L'encliquetage des deux éléments de connexion peut alors se réaliser dans de très bonnes conditions puisque ces deux éléments sont parfaitement alignés.The operation of the connection device is as follows: when the cutting machine on which the movable part 230 of the connection device is fixed arrives in the desired position, identified for example by a sensor, this detection controls the activation of the jack 246. The jack 246 pushes the first carriage 244 in the direction of connection C. When the end 266 of the indexing finger 264 comes into contact with the part 278 forming a cam, the second carriage 248, in the case where there is a misalignment, is displaced by the cooperation of the finger 66 with one of the inclined surfaces 282 or 284. The displacement continues until, under the effect of this centering, the end of the finger enters the orifice 288 extending the inclined guide faces. In this situation, the female connector 234 is perfectly aligned with the male connector 236 secured to the plate 274. The locking of the two connection elements can then be carried out under very good conditions since these two elements are perfectly aligned.

Sur les figures 9 et 10, on a représenté les chariots 244 et 248 en traits pleins dans une première position de repos et en pointillés ces mêmes chariots dans la position qu'ils occupent lorsque la connexion électrique est réalisée.In Figures 9 and 10, there is shown the carriages 244 and 248 in solid lines in a first rest position and in dotted lines these same carriages in the position they occupy when the electrical connection is made.

On comprend que, selon ce mode de réalisation, on obtient ainsi une automatisation complète du fonctionnement de l'installation de découpe des matelas de feuilles.It is understood that, according to this embodiment, a complete automation of the operation of the installation for cutting sheet mattresses is thus obtained.

Claims (10)

  1. An installation for automatically cutting sheet material, the installation comprising at least one cutting device (40, 130) and at least one stacking device (42, 132, 134) for stacking sheets (124) to be cut, the cutting device comprising a bench (44) having a feed end (46) suitable for co-operating with the outlet end of the stacking device and an end (48) for unloading sheets that have been cut out, a cutting head (62) mounted on means (64) for displacing it relative to the bench, a cutting conveyor (60) using suction created by turbine means (66) and an unloading conveyor (58), the installation being characterized in that the bench includes a top face (50) that, running from its feed end to its unloading end, defines a cutting zone (54) beneath which the suction cutting conveyor (60) and an unloading conveyor (58) are mounted, in that the turbine means (66) for creating suction are disposed beneath the unloading conveyor, in that said cutting head (62) is mounted on the face of the displacement means (64) that faces towards the feed end of the bench, and in that means (68) for supporting at least one roll of impermeable film (70) are mounted about said top face of the bench, substantially at its feed end (46).
  2. The automatic cutting installation according to calm 1, characterized in that said means for supporting rolls of film are suitable for simultaneously supporting two rolls (70, 72), optionally of different width.
  3. The automatic cutting installation according to any one of claims 1 and 2, characterized in that to allow a support sheet (110) to be placed on the spreading table (42, 130) beneath the stack of sheets (124) to be transferred, the installation further includes, between the feed end and the cutting zone (54) a zone (52) for receiving the stack of sheets to be cut, said zone being short and being provided with perforating means (74) for perforating said support sheet as it advances together with said stack of sheets (124) towards the cutting zone (54).
  4. The automatic cutting installation according to claim 3, characterized in that said perforation means (74) comprise a cylinder (112) provided on its lateral face with perforation tools (114), said cylinder being mounted free to rotate about a horizontal axis (116) perpendicular to the displacement direction of the stacks of sheets, and means (122) for displacing the axis of said cylinder between an active position in which it perforates the support sheet (110) and an open position in which it is possible to insert said support sheet.
  5. The automatic cutting installation according to any one of claims 1 to 4, characterized in that the turbine suction means (82) include control means (88, 92) for producing a first level of suction while said conveyors (58, 60) are in use, and a second level of suction, higher than the first, during the operation of cutting by means of said cutting head.
  6. The automatic cutting installation according to claim 5, characterized in that said turbine suction means include silencer-forming means (80) and additional means (96, 100, 102) for cooling the motor (88) which means are also designed to deliver a flow of air into the duct (86) connecting the outlet of the turbine (82) to the silencer, which flow of air is at a temperature that is lower than the temperature of the air at the outlet from the turbine.
  7. The automatic cutting installation according to any one of claims 1 to 6, characterized in that it comprises a plurality of stationary stacking devices (132, 134) disposed parallel to one another, a cutting device (130), means (136, 138) for guiding displacement of the cutting device perpendicularly to said stacking devices, and means (142, 144, 146) for controlling the displacement of the cutting device and for stopping it successively in register with each stacking device.
  8. The automatic cutting installation according to any one of the preceding claims, characterized in that said cutting device (130) includes a first electrical connection assembly (152), and in that each stacking device (132, 134) includes a second electrical connection assembly (150) designed to co-operate with the first electrical connection assembly when the cutting device is in register with the corresponding stacking device.
  9. The automatic cutting installation according to claim 8, characterized in that said first electrical connection assembly (152) includes means (154) for adjusting its position along the displacement direction of the cutting device relative to the second electrical connection assembly (150) of the corresponding stacking device.
  10. The automatic cutting installation according to claim 9, characterized in that the first connection assembly (150) includes a first connector portion (236) and a cam-forming assembly (272), and in that the second connection assembly (152) includes an indexing element (264), said two members being mounted on a set of two moving supports (244, 248) suitable for enabling said two members to move in two orthogonal directions, said indexing element being suitable for co-operating with said cam-forming assembly.
EP93917860A 1992-09-01 1993-08-10 Installation for cutting sheet material Expired - Lifetime EP0658087B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9210453 1992-09-01
FR9210453A FR2695059B1 (en) 1992-09-01 1992-09-01 Plant for cutting sheet materials.
PCT/FR1993/000801 WO1994005174A1 (en) 1992-09-01 1993-08-10 Installation for cutting sheet material

Publications (2)

Publication Number Publication Date
EP0658087A1 EP0658087A1 (en) 1995-06-21
EP0658087B1 true EP0658087B1 (en) 1997-01-08

Family

ID=9433127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93917860A Expired - Lifetime EP0658087B1 (en) 1992-09-01 1993-08-10 Installation for cutting sheet material

Country Status (5)

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EP (1) EP0658087B1 (en)
DE (1) DE69307326T2 (en)
ES (1) ES2099966T3 (en)
FR (1) FR2695059B1 (en)
WO (1) WO1994005174A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2893271B1 (en) * 2005-11-16 2008-02-08 Lectra Sa Sa AUTOMATIC CUTTING MACHINE OF SHEET MATERIALS WITH BOMB DEPRESSION HOUSING
CN108823953B (en) * 2018-09-18 2019-09-24 浙江仕雅达纺织有限公司 A kind of Cloth Cutting optimization method in textile technology
CN110000422B (en) * 2019-05-05 2024-01-30 张家港润盛科技材料有限公司 A cut out device fast for aluminium flake

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2819441A1 (en) * 1978-05-03 1979-11-08 Guenter O Stumpf Separating device for a cutting out machine - using raised pins to lift the pattern out of the material
ES8101972A1 (en) * 1979-01-31 1980-12-16 Gerber Garment Technology Inc Apparatus and method for working on successive segments of sheet material
US4514246A (en) * 1982-11-03 1985-04-30 Gerber Garment Technology, Inc. Method of cutting and labeling sheet material
FR2601346B1 (en) * 1986-07-10 1989-03-31 Aerospatiale AUTOMATIC MACHINE FOR PROCESSING A STRIP MATERIAL AND PARTICULARLY FOR CUTTING SUCH A MATERIAL
US4836072A (en) * 1988-04-21 1989-06-06 Gerber Garment Technology, Inc. Vacuum supply system for movable cutter
FR2647764B1 (en) * 1989-06-02 1992-04-10 Lectra Systemes Sa PROCESS FOR FACILITATING THE EVACUATION OF A MATTRESS OF CUT FABRIC PIECES ON AUTOMATIC CUTTING MACHINES WITH CONVEYOR
DE4112644C2 (en) * 1991-04-18 1995-04-13 Jun Erich Scheiter Cutting system especially for the clothing industry

Also Published As

Publication number Publication date
ES2099966T3 (en) 1997-06-01
FR2695059B1 (en) 1994-12-16
FR2695059A1 (en) 1994-03-04
DE69307326T2 (en) 1997-05-15
DE69307326D1 (en) 1997-02-20
WO1994005174A1 (en) 1994-03-17
EP0658087A1 (en) 1995-06-21

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