EP1400325B1 - Method and device for seperating blanks in a machine for cutting sheet material - Google Patents
Method and device for seperating blanks in a machine for cutting sheet material Download PDFInfo
- Publication number
- EP1400325B1 EP1400325B1 EP20030020047 EP03020047A EP1400325B1 EP 1400325 B1 EP1400325 B1 EP 1400325B1 EP 20030020047 EP20030020047 EP 20030020047 EP 03020047 A EP03020047 A EP 03020047A EP 1400325 B1 EP1400325 B1 EP 1400325B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blanks
- suction cups
- sheet
- punches
- poses
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005520 cutting process Methods 0.000 title claims description 7
- 239000000463 material Substances 0.000 title description 5
- 238000009826 distribution Methods 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims 3
- 230000003213 activating effect Effects 0.000 claims 1
- 238000000926 separation method Methods 0.000 description 19
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011111 cardboard Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
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- 230000001464 adherent effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Images
Classifications
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- 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
- B26D7/18—Means for removing cut-out material or waste
- B26D7/1818—Means for removing cut-out material or waste by pushing out
-
- 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
- B26D7/18—Means for removing cut-out material or waste
- B26D7/1845—Means for removing cut-out material or waste by non mechanical means
- B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T225/00—Severing by tearing or breaking
- Y10T225/10—Methods
- Y10T225/12—With preliminary weakening
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T225/00—Severing by tearing or breaking
- Y10T225/30—Breaking or tearing apparatus
- Y10T225/307—Combined with preliminary weakener or with nonbreaking cutter
- Y10T225/321—Preliminary weakener
- Y10T225/325—With means to apply moment of force to weakened work
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T225/00—Severing by tearing or breaking
- Y10T225/30—Breaking or tearing apparatus
- Y10T225/371—Movable breaking tool
- Y10T225/379—Breaking tool intermediate spaced work supports
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/04—Processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/748—With work immobilizer
- Y10T83/7487—Means to clamp work
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8821—With simple rectilinear reciprocating motion only
- Y10T83/8828—Plural tools with same drive means
Definitions
- the present invention relates to a method and a device for separating poses in a machine for cutting plate elements such as, for example, sheets of paper, cardboard or plastic.
- the shaping of such sheets is generally carried out within a production line consisting mainly of a cutting station, a waste ejection station and a separation and reception station poses.
- the leaves are conveyed successively from one station to another by means of a bar of clamps, mounted on a chain train, gripping the front edge of the sheet.
- the chain train is stopped and each sheet undergoes a transformation constituting a new stage in the process of its shaping.
- These sheets are first introduced one by one cyclically in a platen press which will cut as many poses as the surface of the sheet may contain. To prevent the sheet from being dislocated once cut, it is planned to maintain all the poses to each other by attachment points, or small bridges of material, obtained by notches (not cutting) made in cutting nets of the press tool.
- the upper tool is constituted by a set of punches and the lower tool by a matrix with openings.
- the movable upper punches suddenly force all the poses through the apertures of the lower die and thus cause the breaking of the attachment points which connected each of the poses to the remainder of the sheet.
- the separation tools must therefore be adapted to the shape and layout of the poses of each new series of sheets to be worked.
- the punches are mounted in register with the cutting lines of the press, on a base plate attached to an upper tool holder frame of the separating station. Below and opposite each punch is a corresponding opening or mesh of the lower die. The latter being formed of bars defining the meshes, or a widely openwork board.
- this drop height generally of the order of 65 mm, can only be very difficult to reduce because of various dimensional constraints, either at the level of the bulk of the mechanical parts within the station, or at the level of the use and maintenance, where a certain space between the tools is necessary, for example in case of jamming, to be able to easily remove damaged leaves.
- US Patent 5,409,368 relates to an apparatus for separating an object from a support to which it is attached.
- the problem is to separate from a plastic support groups of four pellets containing an insecticide. Part of this plastic support forming the lower part of the pellets, after separation from said support. This is a simple separation of a group of objects from their support sheet, the problem of stacking these groups of objects is not mentioned.
- no elastic effect occurs during the separation.
- the object of the present invention is to eliminate the aforementioned drawbacks by describing a method and a device for separating and stacking poses allowing the control of the fall of the poses in order to avoid any reversal or other untimely disturbance of these during their stacking.
- the device of the present invention uses punches equipped with suction cups to capture the poses before starting the separation operation and hold them, by suction, until the punches have completely crossed the matrix and have descended preferentially as close as possible to the top of the stacks of poses.
- This device has the advantage of being able to control as long as possible the fall of all poses until the punches release them, then go back to perform a new cycle of separation of the poses.
- the subject of the present invention is a device for separating and stacking poses, as described in claim 1, and a method implemented by this device according to claim 6.
- Figures 1 to 3 show schematically the device 1 for separating and stacking the poses of the present invention in a simplified illustration. Certain proportions of the components of the component have deliberately not been respected in order to favor the clarity of the drawing and the understanding of the process applied to this device.
- FIG. 1 gives a representation of this device in a first situation corresponding to the beginning of a cycle which is continuously repeated in a station for separating and receiving poses working sheets 2 previously cut out. These sheets are conveyed, within the machine, according to the direction given by the arrow 3.
- the device 1 comprises an upper tool 10 movable in the vertical plane according to the arrow 4, a horizontal lower tool 30 on which stops the sheet 2 at the beginning of each cycle, and a pallet 35 receiving the poses 5 so as to form a stack 6.
- the upper tool 10 and the lower tool 30 have dimensions corresponding to the format of the sheet 2 whose poses must be separated by breaking their attachment points 7.
- the lower tool 30, also called die, includes apertures 31 whose size is slightly greater than that of the poses 5 so that they can easily pass therethrough.
- the first operation is therefore to position the sheet 2 so as to obtain a perfect registration between the poses and the openings of the lower tool.
- the upper tool 10 comprises a base plate 11, generally made of wood or plastic, on both sides of which are mounted various organs useful for the separation of the poses.
- a base plate 11 generally made of wood or plastic, on both sides of which are mounted various organs useful for the separation of the poses.
- pressers 12 and punches 15 In order to simplify the drawing of Figures 1 to 3, only two pressers arranged on either side of a single punch have been shown. In reality, there are, of course, at least as many punches as there are poses 5 in the sheet 2.
- the squeezers are intended to keep the sheet against the lower tool 30 to prevent it from moving when the poses are detached from the skeleton of the sheet.
- Each of these pressers generally consists of a support heel 13 placed at the end of a telescopic axis, represented here schematically by a spring 14. The other end of this spring being integral with the base plate 11.
- these pressers may be preferably constituted by pads of parallelepiped shape, cut in compressible foam.
- the actual separation of the laying 5 will be performed by the punch 15, which is secured to the base plate 11 by a body 16 terminated at one end by a suction cup 17.
- a suction cup 17 The latter is advantageously expandable and presents itself for example in the form of a bellows.
- the body 16 of the punch and the base plate 11 of the upper tool are traversed by a conduit 18, one end of which opens into the suction cup 17, while the other end is extended by a pipe 19.
- the latter is connected to a pipe 20, arranged on the upper part of the base plate 11. As shown schematically in the figures, this pipe is finally connected to a source 23 suction air through at least one valve 21 and at least one member 22 regulating or measuring.
- these devices allow measurements of certain main characteristics of the air flow, such as its flow rate, its pressure or its speed, for example.
- the suction source 23 is preferably arranged outside the separation station, above the machine, for example.
- each punch 15 of the upper tool 10 is connected to a pipe 20 and all of these pipes form an air distribution network connected to the suction source 23 through at least one valve 21 and one or more regulating or measuring members 22.
- the suction cup is able to grip the pose 5 even before the pressers 12 come into contact with the adjacent sheet portions at the pose. Therefore, the pose is completely controlled and controlled by the punch 15, this before any other operation.
- control of the entire air distribution network is in turn managed electronically, or mechanically using cams, by a control unit 24 symbolized in the figures by the rectangle drawn in broken lines. It thus becomes possible for the operator to be able to act at any time on the suction device by means of this control unit.
- the latter could be materialized by a control console allowing, on the one hand to display and know the parameters of the suction flow, and secondly to act accordingly, if necessary, to correct this flow. It would also be possible to provide a storage of the various adjustment parameters used according to the different work carried out in the station separation of poses.
- Figure 2 shows the same device as that of Figure 1, but in another situation corresponding to a certain time later in the cycle of separation and stacking poses.
- the punch releases the pose 5 following the repressurization of the suction cup 17, ordered by the unit of control 24, and the free circulation of air in the ducts 18.
- the drop height h 2 of the laying 5 is minimal (of the order of 20 to 30 mm).
- the rupture of the attachment points 7 took place at a much higher height h 1 (of the order of 65 mm).
- the upper tool 10 rises, as indicated by the arrow 4 in FIG. 2, until the pressers 12 separate in turn from the rest. of the sheet 2 and that the lower level of the suction cup 17 reaches at least the top of the sheet 2. Therefore, the latter can be removed from the separation station of the poses, in the direction given by the arrow 3.
- a new The cycle can then begin again as soon as a new sheet 2 arrives.
- the pallet 35 descends so that the upper surface of the stack remains at a constant level. .
- the height of fall h 2 preferably remains also invariable.
- FIG. 3 shows a variant of the same device, but in a slightly different configuration.
- This variant suggests in particular another punch 45 in which the body 46 comprises a recess 40 allowing the folding of the suction cup 17 inside this recess.
- d separates the bottom of the suction cup 17 from the lower surface of the body 46.
- the suction cup 17 can therefore, even before the attachment points yield completely retract into the recess 40 when the punch 45 begins to press the pose 5.
- it is the lower surface of the body 46 which, by coming into contact with the pose 5, will inflect the latter 5. down to breaking the attachment points 7 which connect it to the sheet 2.
- the fall of this pose 5 remains under the control of the punch 45 until the control device 24 orders to cut off the suction flow and let the air in the pipes 20 again.
- the diameter of the pipes of the air distribution network is dimensioned according to the surface and the total number of poses per sheet.
- the power of the suction source is also adapted according to the work to be performed but, in many cases, tests have shown that the regulators 21 have a sufficient adjustment range to cover almost all needs.
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Details Of Cutting Devices (AREA)
Abstract
Description
La présente invention a pour objet un procédé et un dispositif de séparation de poses dans une machine de découpe d'éléments en plaque tels que, par exemple, des feuilles de papier, de carton ou de matière plastique.The present invention relates to a method and a device for separating poses in a machine for cutting plate elements such as, for example, sheets of paper, cardboard or plastic.
Le façonnage de telles feuilles s'effectue généralement au sein d'une ligne de production constituée principalement d'une station de découpage, d'une station d'éjection des déchets et d'une station de séparation et de réception des poses. Les feuilles sont convoyées successivement d'une station à l'autre par le biais d'une barre de pinces, montée sur un train de chaînes, saisissant le bord frontal de la feuille. A chaque station, le train de chaîne est stoppé et chaque feuille subit une transformation constitutive d'une nouvelle étape dans le processus de son façonnage.The shaping of such sheets is generally carried out within a production line consisting mainly of a cutting station, a waste ejection station and a separation and reception station poses. The leaves are conveyed successively from one station to another by means of a bar of clamps, mounted on a chain train, gripping the front edge of the sheet. At each station, the chain train is stopped and each sheet undergoes a transformation constituting a new stage in the process of its shaping.
Il est ainsi possible de produire, par exemple, des boîtes d'emballage, des étiquettes ou tout autre article généralement pré-imprimé, à partir de chacune de ces feuilles. Développés à plat lors de leur façonnage, ces articles sont communément appelés poses par l'homme du métier.It is thus possible to produce, for example, packaging boxes, labels or any other generally pre-printed article from each of these sheets. Developed flat during their shaping, these items are commonly called poses by those skilled in the art.
Ces feuilles sont tout d'abord introduites une à une cycliquement dans une presse à platine qui découpera autant de poses que la surface de la feuille peut en contenir. Pour éviter que la feuille ne se disloque une fois découpée, il est prévu de maintenir toutes les poses les unes aux autres par des points d'attache, ou petits ponts de matière, obtenus par des encoches (non coupantes) réalisés dans les filets coupeurs de l'outil de la presse.These sheets are first introduced one by one cyclically in a platen press which will cut as many poses as the surface of the sheet may contain. To prevent the sheet from being dislocated once cut, it is planned to maintain all the poses to each other by attachment points, or small bridges of material, obtained by notches (not cutting) made in cutting nets of the press tool.
Bien que les poses aient fait l'objet d'une disposition judicieuse sur la feuille, il n'est généralement pas possible d'éviter la formation de déchets interstitiels. De ce fait, il convient de faire passer chacune de ces feuilles dans une autre station, appelée station d'éjection des déchets, afin d'en retirer toutes les parties indésirables, par pincement entre une pluralité d'éjecteurs. Suite à cette opération, la feuille est encore emmenée par la barre de pinces vers une station dite de séparation et de réception des poses, où ces poses seront précisément détachées les unes des autres et soigneusement empilées sur une palette pour former autant de piles qu'il y a de poses dans une feuille. Finalement, la feuille résiduelle, ou squelette, dont fait partie son bord frontal, est relâchée par la barre de pinces dans une station de sortie.Although the poses have been judiciously disposed on the sheet, it is generally not possible to avoid the formation of interstitial wastes. Therefore, it is appropriate to pass each of these sheets in another station, called waste ejection station, to remove all the unwanted parts, by pinching between a plurality of ejectors. Following this operation, the sheet is still taken by the clamp bar to a so-called separation and receiving station poses, where these poses will be precisely detached from each other and carefully stacked on a pallet to form as many piles as there are poses in a leaf. Finally, the residual leaf, or skeleton, which includes its front edge, is released by the clip bar into an output station.
C'est dans la station de séparation et de réception des poses que l'objet de la présente invention trouve son utilisation.It is in the station for separating and receiving poses that the object of the present invention finds its use.
Il est connu d'utiliser, dans une station de séparation et de réception des poses, un outil supérieur mobile et un outil inférieur fixe. L'outil supérieur est constitué par un ensemble de poinçons et l'outil inférieur par une matrice à ouvertures. Dans un mouvement vertical dirigé vers le bas, les poinçons supérieurs mobiles forcent d'un coup toutes les poses au travers des ouvertures de la matrice inférieure et provoquent ainsi la rupture des points d'attache qui reliaient chacune des poses au reste de la feuille. Les outils de séparation doivent donc être adaptés à la forme et à la disposition des poses de chaque nouvelle série de feuilles à travailler. En général, les poinçons sont montés en repérage par rapport aux lignes de découpage de la presse, sur une plaque de base fixée à un cadre porte-outil supérieur de la station de séparation des poses. Au-dessous et en regard de chaque poinçon, se trouve une ouverture ou maille correspondante de la matrice inférieure. Cette dernière étant formée de barrettes définissant les mailles, ou d'une planche largement ajourée.It is known to use, in a station for separating and receiving poses, a mobile upper tool and a fixed lower tool. The upper tool is constituted by a set of punches and the lower tool by a matrix with openings. In a downward vertical movement, the movable upper punches suddenly force all the poses through the apertures of the lower die and thus cause the breaking of the attachment points which connected each of the poses to the remainder of the sheet. The separation tools must therefore be adapted to the shape and layout of the poses of each new series of sheets to be worked. In general, the punches are mounted in register with the cutting lines of the press, on a base plate attached to an upper tool holder frame of the separating station. Below and opposite each punch is a corresponding opening or mesh of the lower die. The latter being formed of bars defining the meshes, or a widely openwork board.
Les brevets CH682651 et EP763407 décrivent plus en détail de tels dispositifs qui fonctionnent à satisfaction pour des poses de grande ou de moyenne dimension. Or, lorsqu'il convient de séparer des poses de petite taille, ou de faible largeur comme des languettes, ces poses ont tendance à pivoter ou à se retourner lorsqu'elles sont éjectées de la feuille. De ce fait, leur empilement ne peut donc plus être assuré et devient aléatoire et incorrect. Lorsque les poses ont une surface suffisamment importante, ce qui est généralement le cas lors de la confection d'emballages, ces poses tombent naturellement en planant et en s'empilant correctement sur la palette. On constate alors que le quotient de la hauteur de chute par la surface de la pose est suffisamment petit pour que la pose n'ait pas le temps de se retourner. Or cette hauteur de chute, généralement de l'ordre de 65mm, ne peut être que très difficilement réduite en raison de diverses contraintes dimensionnelles, soit au niveau de l'encombrement des pièces mécaniques au sein de la station, soit au niveau de l'utilisation et de la maintenance, où un certain espace entre les outils est nécessaire, par exemple en cas de bourrage, pour pouvoir retirer aisément des feuilles endommagées.The patents CH682651 and EP763407 describe in greater detail such devices that function satisfactorily for large or medium-sized poses. However, when it is necessary to separate poses of small size, or small width such as tabs, these poses tend to rotate or turn when they are ejected from the sheet. As a result, their stacking can no longer be assured and becomes random and incorrect. When the poses have a sufficiently large surface, which is generally the case when making packaging, these poses fall naturally by hovering and stacking correctly on the pallet. It can be seen that the quotient of the drop height by the surface of the pose is small enough so that the pose does not have time to turn around. However, this drop height, generally of the order of 65 mm, can only be very difficult to reduce because of various dimensional constraints, either at the level of the bulk of the mechanical parts within the station, or at the level of the use and maintenance, where a certain space between the tools is necessary, for example in case of jamming, to be able to easily remove damaged leaves.
Le brevet US 5,409,368 se rapporte quant à lui à un appareil pour séparer un objet d'un support auquel il est attaché. Dans ce brevet, le problème consiste à détacher, d'un support en plastique des groupes de quatre pastilles contenant un insecticide. Une partie de ce support en plastique formant la partie inférieure des pastilles, cela après leur séparation dudit support. Il s'agit ici d'une simple séparation d'un groupe d'objets de leur feuille support, le problème de l'empilage de ces groupes d'objets n'étant pas évoqué. De plus dans ce brevet, aucun effet d'élasticité n'intervient lors de la séparation.US Patent 5,409,368 relates to an apparatus for separating an object from a support to which it is attached. In this patent, the problem is to separate from a plastic support groups of four pellets containing an insecticide. Part of this plastic support forming the lower part of the pellets, after separation from said support. This is a simple separation of a group of objects from their support sheet, the problem of stacking these groups of objects is not mentioned. In addition, in this patent, no elastic effect occurs during the separation.
Le problème d'un empilement incorrect des poses est d'autant plus marqué lorsque ces dernières sont issues d'une feuille en matière plastique. En effet, ce genre de matériau confère souvent aux poses une bonne élasticité lorsqu'on tente de les incurver. Or, c'est précisément le cas lors de l'opération de la séparation des poses. Lorsque le poinçon appuie sur la pose, celle-ci s'infléchit de plus en plus jusqu'à ce que ses points d'attache cèdent soudainement. A ce moment, la pose est projetée vers le bas à très haute vitesse sous l'effet de détente qui se produit brusquement lors de la rupture des ponts de matière. La vitesse de propulsion de la pose étant bien supérieure à celle du mouvement du poinçon, sa chute devient totalement incontrôlable. On a également constaté que cet "effet ressort" de détente est d'autant plus marqué que la matière utilisée est résistante à la rupture (c'est le cas du plastique comparativement au carton). L'épaisseur (de l'ordre de 0.2 à 0.6 mm) et la géométrie de la pose contribuent également à renforcer cette réaction, notamment lorsque les poses sont particulièrement étroites et allongées et se présentent sous la forme de petites languettes par exemple.The problem of improper stacking poses is even more marked when these are derived from a plastic sheet. Indeed, this kind of material often gives the poses a good elasticity when trying to bend them. However, this is precisely the case during the operation of the separation of the poses. When the punch presses on the pose, it bends more and more until its attachment points suddenly give way. At this time, the pose is projected down at very high speed under the effect of relaxation which occurs abruptly during the rupture of the material bridges. The speed of propulsion of the pose being much higher than that of the movement of the punch, its fall becomes totally uncontrollable. It has also been found that this "spring effect" of relaxation is all the more marked that the material used is resistant to breakage (this is the case of plastic compared to cardboard). The thickness (of the order of 0.2 to 0.6 mm) and the geometry of the pose also contribute to reinforcing this reaction, especially when the poses are particularly narrow and elongated and are in the form of small tongues for example.
Un autre inconvénient réside dans le fait que, parfois, les points d'attache ne se rompent pas tous en même temps lors du passage du poinçon au travers de l'outil inférieur. Cela arrive régulièrement lorsque les poses traitées sont en matière synthétique, tel que du polypropylène, de faible épaisseur (typiquement entre 40 µm et 0,1 mm). Ainsi, si tous les points d'attache d'un même côté de la pose ne se rompent pas alors que ceux situés de l'autre côté se rompent correctement, cette pose ne pourra pas être complètement détachée et restera pendue sous la feuille par les points d'attache persistants. Dans ce cas, il se produit soit un bourrage de la machine, soit un dérangement dans l'empilement lorsque cette pose tombera au moment du retrait du reste de la feuille.Another disadvantage lies in the fact that sometimes the attachment points do not all break at the same time during the passage of the punch through the lower tool. This occurs regularly when the poses are treated in synthetic material, such as polypropylene, thin (typically between 40 microns and 0.1 mm). Thus, if all the points of attachment on the same side of the pose do not break while those on the other side break properly, this pose can not be completely detached and will remain hanging under the sheet by the persistent attachment points. In this case, there is either a jam of the machine, or a disturbance in the stack when the pose will fall when removing the rest of the sheet.
L'objet de la présente invention vise à supprimer les inconvénients précités en décrivant un procédé et un dispositif de séparation et d'empilage des poses permettant le contrôle de la chute des poses afin d'éviter tout retournement ou autre dérangement intempestif de celles-ci lors de leur empilement. A ces fins, le dispositif de la présente invention utilise des poinçons équipés de ventouses permettant de saisir les poses avant de commencer l'opération de séparation et de les maintenir, par aspiration, jusqu'à ce que les poinçons aient totalement traversé la matrice et soient descendus préférentiellement le plus près possible du sommet des piles de poses. Ce dispositif présente l'avantage de pouvoir ainsi contrôler le plus longtemps possible la chute de toutes les poses jusqu'à ce que les poinçons les relâchent, puis remontent pour effectuer un nouveau cycle de séparation des poses.The object of the present invention is to eliminate the aforementioned drawbacks by describing a method and a device for separating and stacking poses allowing the control of the fall of the poses in order to avoid any reversal or other untimely disturbance of these during their stacking. For these purposes, the device of the present invention uses punches equipped with suction cups to capture the poses before starting the separation operation and hold them, by suction, until the punches have completely crossed the matrix and have descended preferentially as close as possible to the top of the stacks of poses. This device has the advantage of being able to control as long as possible the fall of all poses until the punches release them, then go back to perform a new cycle of separation of the poses.
A cet effet, la présente invention a pour objet un dispositif de séparation et d'empilage des poses, conforme à ce qu'énonce la revendication 1, et un procédé mis en oeuvre par ce dispositif conforme à ce qu'énonce la revendication 6.To this end, the subject of the present invention is a device for separating and stacking poses, as described in claim 1, and a method implemented by this device according to
L'invention sera mieux comprise à l'étude d'un mode de réalisation pris à titre nullement limitatif et illustré par les figures annexées dans lesquelles :
- la figure 1 représente une vue schématique en coupe partielle du dispositif de séparation et d'empilage des poses de la présente invention, dans une première situation conforme au début du cycle de séparation des poses ;
- la figure 2 représente le même dispositif dans une seconde situation proche de la fin du cycle de séparation des poses ;
- la figure 3 représente une variante du dispositif illustré à la figure 1.
- Figure 1 shows a schematic partial sectional view of the separating device and stacking of the poses of the present invention, in a first situation according to the beginning of the separation cycle of the poses;
- Figure 2 shows the same device in a second situation near the end of the blank separation cycle;
- FIG. 3 represents a variant of the device illustrated in FIG.
Les figures 1 à 3 représentent schématiquement le dispositif 1 de séparation et d'empilage des poses de la présente invention dans une illustration simplifiée. Certaines proportions des organes le composant n'ont volontairement pas été respectées afin de privilégier la clarté du dessin et la compréhension du procédé appliqué à ce dispositif.Figures 1 to 3 show schematically the device 1 for separating and stacking the poses of the present invention in a simplified illustration. Certain proportions of the components of the component have deliberately not been respected in order to favor the clarity of the drawing and the understanding of the process applied to this device.
La figure 1 donne une représentation de ce dispositif dans une première situation correspondant au début d'un cycle continuellement répété dans une station de séparation et de réception des poses travaillant des feuilles 2 préalablement découpées. Ces feuilles sont convoyées, au sein de la machine, conformément au sens donné par la flèche 3.FIG. 1 gives a representation of this device in a first situation corresponding to the beginning of a cycle which is continuously repeated in a station for separating and receiving
Le dispositif 1 comprend un outil supérieur 10 mobile dans le plan vertical selon la flèche 4, un outil inférieur 30 horizontal sur lequel vient s'arrêter la feuille 2 au début de chaque cycle, et une palette 35 réceptionnant les poses 5 de façon à former une pile 6. L'outil supérieur 10 et l'outil inférieur 30 ont des dimensions correspondant au format de la feuille 2 dont les poses doivent être séparées par rupture de leurs points d'attache 7.The device 1 comprises an
L'outil inférieur 30, appelé aussi matrice, comprend des ouvertures 31 dont la taille est légèrement supérieure à celle des poses 5 de façon à ce qu'elles puissent facilement passer au travers de celles-ci. La première opération consiste donc à positionner la feuille 2 de façon à obtenir un parfait repérage entre les poses et les ouvertures de l'outil inférieur.The
L'outil supérieur 10 comprend une plaque de base 11, généralement en bois ou en matière synthétique, sur les deux faces de laquelle sont montés divers organes utiles à la séparation des poses. A cet effet, on y trouve essentiellement des presseurs 12 et des poinçons 15. Afin de simplifier le dessin des figures 1 à 3, seuls deux presseurs disposés de part et d'autre d'un seul poinçon ont été représentés. En réalité, il y a bien sûr au moins autant de poinçons 15 qu'il y a de poses 5 dans la feuille 2.The
Les presseurs ont pour but de maintenir la feuille contre l'outil inférieur 30 afin d'éviter qu'elle ne bouge lorsque les poses sont détachées du squelette de la feuille. Chacun de ces presseurs est généralement constitué d'un talon d'appui 13 placé au bout d'un axe télescopique, représenté ici schématiquement par un ressort 14. L'autre extrémité de ce ressort étant solidaire de la plaque de base 11. Dans une autre réalisation connue, ces presseurs peuvent être préférentiellement constitués par des plots de forme parallélépipédique, taillés dans de la mousse compressible.The squeezers are intended to keep the sheet against the
La séparation proprement dite de la pose 5 sera effectuée par le poinçon 15, lequel est rendu solidaire de la plaque de base 11 par un corps 16 terminé en l'une de ses extrémités par une ventouse 17. Cette dernière est avantageusement expansible et se présente par exemple sous la forme d'un soufflet. Le corps 16 du poinçon ainsi que la plaque de base 11 de l'outil supérieur sont traversés par un conduit 18 dont l'une des extrémités débouche à l'intérieur de la ventouse 17, alors que l'autre extrémité se prolonge par un tuyau 19. Ce dernier est raccordé à une canalisation 20, agencée sur la partie supérieure de la plaque de base 11. Telle que représentée schématiquement dans les figures, cette canalisation est enfin connectée à une source 23 d'aspiration d'air par l'intermédiaire d'au moins une vanne 21 et d'au moins un organe 22 de régulation ou de mesure. Avantageusement, ces organes permettent des mesures de certaines caractéristiques principales du flux d'air, comme son débit, sa pression ou sa vitesse, par exemple. La source 23 d'aspiration est préférentiellement agencée à l'extérieur de la station de séparation des poses, au dessus de la machine, par exemple. Utilement, chaque poinçon 15 de l'outil supérieur 10 est connecté à une canalisation 20 et l'ensemble de ces canalisations forme un réseau de distribution d'air relié à la source 23 d'aspiration au travers d'au moins une vanne 21 et d'un ou plusieurs organes 22 de régulation ou de mesure.The actual separation of the laying 5 will be performed by the
Telle que représentée dans la figure 1, et grâce à la mise en route de l'aspiration dans la ventouse 17, cette ventouse est apte à saisir la pose 5 avant même que les presseurs 12 n'entrent en contact avec les parties de feuille adjacentes à la pose. De ce fait, la pose est totalement contrôlée et maîtrisée par le poinçon 15, ceci avant toute autre opération.As shown in Figure 1, and thanks to the startup of the suction in the
Le contrôle de l'ensemble du réseau de distribution d'air est quant à lui géré électroniquement, ou mécaniquement à l'aide de cames, par une unité de contrôle 24 symbolisée dans les figures par le rectangle dessiné en trait interrompu. Il devient ainsi possible à l'opérateur de pouvoir agir à tout moment sur le dispositif d'aspiration par le biais de cette unité de contrôle. Cette dernière pourrait être matérialisée par une console de commande permettant, d'une part d'afficher et de connaître les paramètres du flux aspirant, et d'autre part d'agir en conséquence, si besoin est, pour corriger ce flux. Il serait également possible de prévoir une mémorisation des différents paramètres de réglage utilisés en fonction des différents travaux réalisés dans la station de séparation des poses.The control of the entire air distribution network is in turn managed electronically, or mechanically using cams, by a
La figure 2 représente le même dispositif que celui de la figure 1, mais dans une autre situation correspondant à un certain laps de temps plus tard dans le cycle de la séparation et d'empilage des poses. Ainsi dans l'intervalle, une fois que le poinçon 15 a pris le contrôle de la pose 5 par aspiration de l'air au travers de la ventouse 17, les presseurs 12 prennent appui contre la feuille 2 au voisinage direct de l'ouverture 31. Grâce au déplacement continu vers le bas de l'outil supérieur 10, le soufflet de la ventouse 17 se comprime progressivement jusqu'à ce que cette force de compression excède la résistance mécanique des points d'attache 7. Dès cet instant, la pose n'est pas éjectée en avant de manière brutale, mais au contraire reste sous le contrôle du poinçon 15 qui, continuellement, poursuit sa descente en direction de la pile 6. Arrivé au plus bas niveau de sa course, le poinçon relâche la pose 5 à la suite de la repressurisation de la ventouse 17, ordonnée par l'unité de contrôle 24, et de la remise en circulation libre de l'air dans les conduits 18. A cet instant, la hauteur de chute h2 de la pose 5 est minimale (de l'ordre de 20 à 30 mm). Comparativement, la rupture des points d'attache 7 a eu lieu à une hauteur h1 beaucoup plus importante (de l'ordre de 65 mm).Figure 2 shows the same device as that of Figure 1, but in another situation corresponding to a certain time later in the cycle of separation and stacking poses. Thus in the meantime, once the
Une fois que la ventouse 17 s'est séparée de la pose 5, l'outil supérieur 10 remonte, tel qu'indiqué par la flèche 4 dans la figure 2, jusqu'à ce que les presseurs 12 se séparent à leur tour du reste de la feuille 2 et que le niveau inférieur de la ventouse 17 atteigne au moins le dessus de la feuille 2. Dès lors, cette dernière peut être évacuée de la station de séparation des poses, dans la direction donnée par la flèche 3. Un nouveau cycle peut alors recommencer dès l'arrivée d'une nouvelle feuille 2. Au fur et à mesure que la pile 6 de feuilles s'amoncelle, la palette 35 descend de façon à ce que la surface supérieure de la pile reste à un niveau constant. De ce fait, la hauteur de chute h2 reste, de préférence, également invariable.Once the
La figure 3 représente une variante du même dispositif, mais dans une configuration légèrement différente. Cette variante suggère notamment un autre poinçon 45 dans lequel le corps 46 comprend un évidement 40 autorisant le repli de la ventouse 17 à l'intérieur de cet évidement. Selon cet agencement, seule une très faible distance d sépare le bas de la ventouse 17 de la surface inférieure du corps 46. Etant constituée d'un soufflet suffisamment souple, la ventouse 17 peut donc, avant même que les points d'attache ne cèdent, se rétracter complètement dans l'évidement 40 lorsque le poinçon 45 commence à appuyer sur la pose 5. De ce fait, c'est la surface inférieure du corps 46 qui, en entrant en contact avec la pose 5, va faire infléchir cette dernière vers le bas jusqu'à rompre les points d'attache 7 qui la relient à la feuille 2. Maintenue sous constante aspiration, la chute de cette pose 5 reste sous le contrôle du poinçon 45 jusqu'à ce que le dispositif de contrôle 24 ordonne de couper le flux d'aspiration et laisse à nouveau repasser l'air dans les canalisations 20.Figure 3 shows a variant of the same device, but in a slightly different configuration. This variant suggests in particular another
Dans cette variante, on a imaginé que les presseurs entrent en contact avec la feuille 2 avant que la ventouse 17 du poinçon 15 ne saisisse la pose 5 par aspiration. Le restant du processus se faisant comme décrit précédemment lors de la poursuite de la descente du poinçon, et dans un ordre rigoureusement inverse lors de la remontée de l'outil supérieur 10.In this variant, it has been imagined that the pressers come into contact with the
Quelle que soit la variante choisie, le diamètre des canalisations du réseau de distribution d'air est dimensionné en fonction de la surface et du nombre total de poses par feuille. La puissance de la source d'aspiration est aussi adaptée en fonction du travail à exécuter mais, dans de nombreux cas, des tests ont montré que les organes de régulation 21 avaient une plage de réglage suffisante pour couvrir la quasi totalité des besoins.Whatever the variant chosen, the diameter of the pipes of the air distribution network is dimensioned according to the surface and the total number of poses per sheet. The power of the suction source is also adapted according to the work to be performed but, in many cases, tests have shown that the
Sans que cela ne soit pour autant une exclusion, il n'est pas prévu d'inverser la pressurisation dans les conduits afin d'injecter un flux d'air soufflant dans la ventouse en vue de décoller plus rapidement la pose de la surface inférieure de la ventouse. Cela pourrait être toutefois utile dans le cas où l'on serait amené à traiter de très petites poses, très légères et ayant une surface quelque peu trop adhérente. En effet, une telle pose pourrait alors montrer une certaine peine à se séparer naturellement de la ventouse par simple effet de la gravité. Dans ce cas, la source 23 d'aspiration serait transformée en une source 23 de refoulement d'air, par simple inversion des polarités du moteur la constituant.Without this being an exclusion, it is not planned to reverse the pressurization in the ducts to inject a flow of air blowing into the suction cup in order to take off more quickly the laying of the lower surface of the sucker. This could be useful, however, if one were to deal with very small poses, very light and having a somewhat too adherent surface. Indeed, such a pose could then show some difficulty in separating naturally from the suction cup by simple effect of gravity. In this case, the
Il serait également possible de couper l'effet aspirant dans la ventouse, dans l'intervalle situé entre la rupture des points d'attache et le point le plus bas de la course de l'outil supérieur 10. Dans ce cas, l'effet bénéfique du contrôle de la pose durant son détachement de la feuille serait toujours conservé et cette pose ne serait dans tous les cas jamais éjectée à une vitesse supérieure à celle du mouvement du poinçon la détachant.It would also be possible to cut the suction effect in the suction cup, in the interval between the breaking of the attachment points and the lowest point of the stroke of the
Des tests en atelier ont également montré qu'il était avantageux de privilégier une ventouse à soufflet plutôt qu'une ventouse à cloche comme on en trouve généralement dans les groupes suceurs introduisant les feuilles dans une ligne de production. En effet, l'avantage de la caractéristique expansible de la ventouse à soufflet réside principalement dans le fait qu'elle permette de saisir la pose dans tous les cas, même lorsque qu'il existe un certain travers entre le plan de la surface inférieure de la ventouse et le plan de la pose, ou lorsque cette dernière ne présente pas une surface parfaitement plane. Néanmoins, il serait bien sûr possible de prévoir l'agencement d'un autre type de ventouse dans le dispositif de séparation des poses tel que présenté ci-avant.Workshop tests have also shown that it is advantageous to favor a bellows suction cup rather than a bell pad as generally found in sucking groups introducing the leaves into a production line. Indeed, the advantage of the expandable characteristic of the bellows suction cup lies mainly in the fact that it allows to enter the pose in all cases, even when there is a certain gap between the plane of the lower surface of the suction cup and the plane of the installation, or when the latter does not have a perfectly flat surface. Nevertheless, it would of course be possible to provide the arrangement of another type of suction cup in the device for separating poses as presented above.
Le procédé de séparation et d'empilage des poses appliqué à ce dispositif comprend donc successivement les principales étapes suivantes :
- a) mise en repérage des poses 5 de la feuille pré-découpée face aux ouvertures 31 de l'outil inférieur 30 ;
- b) activation de l'aspiration de l'air dans les ventouses 17 des poinçons 15 ;
- c) saisie des poses 5 par les ventouses 17 avant la rupture des points d'attache 7 par les poinçons 15 ;
- d) séparation des poses 5 et contrôle de ces dernières par le maintien d'une dépression dans les ventouses 17 durant la rupture des points d'attache 7 ;
- e) modification de la pression de l'air dans les ventouses 17 de façon à décoller les poses 5 des ventouses 17 ;
- f) empilage des poses (5) décollées des ventouses (17);
- g) remontée de l'outil supérieur 10 vers sa position initiale;
- h) évacuation de la feuille 2 hors du dispositif 1 de séparation des poses.
- a) locating the
poses 5 of the pre-cut sheet facing theopenings 31 of thelower tool 30; - b) activation of the suction of the air in the
suction cups 17 of thepunches 15; - c) gripping of the
poses 5 by thesuction cups 17 before the breaking of the attachment points 7 by thepunches 15; - d) separation of the
poses 5 and control of the latter by maintaining a vacuum in thesuction cups 17 during the breaking of the attachment points 7; - e) modifying the pressure of the air in the
suction cups 17 so as to take off theposes 5 of thesuction cups 17; - f) stacking the poses (5) detached from the suction cups (17);
- g) raising the
upper tool 10 to its initial position; - h) evacuation of the
sheet 2 from the device 1 for separation of the poses.
Dans ce processus, il convient aussi de remarquer que l'on pourrait également ajouter une étape stipulant que les presseurs 12 entrent en contact avec la feuille 2, soit avant la saisie des poses par les ventouses, soit après cette saisie.In this process, it should also be noted that one could also add a step stipulating that the
On rappellera finalement que les agencements des différents organes du dispositif objet de la présente invention ont été illustrés de façon très schématisée dans les figures et que l'invention ne se limite nullement à de telles illustrations mais peut comprendre de nombreuses améliorations apportées dans le cadre des revendications.Finally, it will be recalled that the arrangements of the various organs of the device which are the subject of the present invention have been illustrated very schematically in the figures and that the invention is not limited to such illustrations but may include numerous improvements made in the context of the invention. claims.
Claims (9)
- Device for separating and piling up blanks in a machine for cutting plate or sheet (2) elements, such as plastic plates or sheets, which have been previously cut in several blanks (5) that are held together by a number of nicks (7), comprising a horizontal and fixed lower tool (30) in which are provided as many openings (31) as there are blanks (5), an upper tool (10) cyclically movable in the vertical plane and having a plurality of telescopic pressing devices (12) on its lower surface for holding the said sheet (2) on the lower tool (30) and a plurality of punches to release the blanks (5) from the sheet (2) during the vertical movement of the punches (15, 45) passing through the plane of the lower tool (30) through said openings (31), so that said blanks (5) can be piled up, characterized in that said punches (15, 45) are equipped with suction cups (17) which are connected, by a distribution network (18, 19, 20) located above the upper tool (10), to a vaccum or a pressure source (23) able to generate changes in the air pressure within the suction cup (17), at least one part of each suction cup (17) projects below the lower end (46) of the punch (15, 45) to which it is fixedly attached, and in that said punches (15, 45), which are equipped with suction cups (17) and have passed through the lower tool (30), are arranged for being lowered to the vicinity of the top of the piles of the previously piled up blanks; and in that the device comprises a control unit (24) which controls the vaccum in the suction cups (17) so that the blanks are held by suction, until the punches (15, 45) have completely passed through the plane of the lower tool (30) and have been lowered to the vicinity of the top of the piles of the previously piled up blanks.
- Device according to claim 1, characterized in that the suction cups (17) are expansible.
- Device according to claim 1, characterized in that the distribution network (18, 19, 20) includes at least one valve (21) and/or at least one air regulation or measuring member (22).
- Device according to claim 3, characterized in that the distribution network (18, 19, 20) and/or the vaccum or pressure source (23) are operated by a control unit (24).
- Method for separating and piling up blanks according to claim 1, characterized in that it successively includes the following steps:a) Registering the blanks (5) of the pre-cut sheet (2) opposite to the openings (31) of the lower tool (30);b) Activating the vaccum in the suction cups (17) of the punches (15, 45);c) Gripping the blanks (5) by the suction cups (17) before the rupture of the nicks (7) by the punches (15, 45);d) Separating the blanks (5) and controlling them by keeping the suction cups (17) under low pressure during the rupture of the nicks (7);e) Lowering the punches (15, 45) to the vicinity of the top of the piles of the previously piled up blanks;f) Changing the air pressure in the suction cups (17) so as to release the blanks (5) from the suction cups (17);g) Piling up the blanks (5) released from the suction cups (17);h) Returning the upper tool (10) upward to its initial position;i) Evacuating the sheet (2) outside of the device (1) for separating blanks.
- Method according to claim 5, characterized in that the pressing devices (12) contact the sheet (2) before the blanks (5) are gripped by the suction cups (17).
- Method according to claim 5, characterized in that the pressing devices (12) contact the sheet (2) after the blanks (5) have been gripped by the suction cups (17).
- Method according to claim 5, characterized in that the changing of the air pressure in the suction cups (17) comprises equalizing the value of this pressure with that of the ambient pressure in the vicinity of the device (1).
- Method according to claim 5, characterized in that the changing of the air pressure in the suction cups (17) comprises increasing the value of this pressure to be above the value of the ambient pressure in the vicinity of the device (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CH15482002 | 2002-09-12 | ||
CH01548/02A CH695854A5 (en) | 2002-09-12 | 2002-09-12 | Method and blank separating device in a plate member cutting machine. |
Publications (2)
Publication Number | Publication Date |
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EP1400325A1 EP1400325A1 (en) | 2004-03-24 |
EP1400325B1 true EP1400325B1 (en) | 2007-03-28 |
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EP20030020047 Expired - Lifetime EP1400325B1 (en) | 2002-09-12 | 2003-09-04 | Method and device for seperating blanks in a machine for cutting sheet material |
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US (1) | US6913177B2 (en) |
EP (1) | EP1400325B1 (en) |
AT (1) | ATE357999T1 (en) |
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DE (1) | DE60312787T2 (en) |
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CN107030757A (en) * | 2017-04-28 | 2017-08-11 | 浙江飞达机械有限公司 | A kind of paper bicker |
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US20060174736A1 (en) * | 2005-02-10 | 2006-08-10 | Aaron Bloy | Slitter knife system and method |
US20080113150A1 (en) * | 2006-11-13 | 2008-05-15 | Calvin Chunliang Lee | Suction tape |
US8157947B2 (en) * | 2007-04-27 | 2012-04-17 | Applied Ft Composite Solutions Inc. | Method and apparatus for fabricating composite protective material |
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-
2002
- 2002-09-12 CH CH01548/02A patent/CH695854A5/en not_active IP Right Cessation
-
2003
- 2003-09-04 DE DE2003612787 patent/DE60312787T2/en not_active Expired - Lifetime
- 2003-09-04 EP EP20030020047 patent/EP1400325B1/en not_active Expired - Lifetime
- 2003-09-04 AT AT03020047T patent/ATE357999T1/en not_active IP Right Cessation
- 2003-09-12 US US10/661,255 patent/US6913177B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107030757A (en) * | 2017-04-28 | 2017-08-11 | 浙江飞达机械有限公司 | A kind of paper bicker |
Also Published As
Publication number | Publication date |
---|---|
EP1400325A1 (en) | 2004-03-24 |
CH695854A5 (en) | 2006-09-29 |
ATE357999T1 (en) | 2007-04-15 |
US6913177B2 (en) | 2005-07-05 |
DE60312787T2 (en) | 2007-12-13 |
DE60312787D1 (en) | 2007-05-10 |
US20040050225A1 (en) | 2004-03-18 |
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