EP1889696B1 - Appareil pour le poinçonage et méthode utilisant un tel appareil - Google Patents

Appareil pour le poinçonage et méthode utilisant un tel appareil Download PDF

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Publication number
EP1889696B1
EP1889696B1 EP20060016952 EP06016952A EP1889696B1 EP 1889696 B1 EP1889696 B1 EP 1889696B1 EP 20060016952 EP20060016952 EP 20060016952 EP 06016952 A EP06016952 A EP 06016952A EP 1889696 B1 EP1889696 B1 EP 1889696B1
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EP
European Patent Office
Prior art keywords
punching
blade
plunger
blank
blades
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP20060016952
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German (de)
English (en)
Other versions
EP1889696A1 (fr
Inventor
Michael Engel
Stephan Stirnimann
Alex Schuhmacher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Blumer Maschinenbau AG
Original Assignee
Blumer Maschinenbau AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to ES06016952T priority Critical patent/ES2391978T3/es
Priority to EP20060016952 priority patent/EP1889696B1/fr
Publication of EP1889696A1 publication Critical patent/EP1889696A1/fr
Application granted granted Critical
Publication of EP1889696B1 publication Critical patent/EP1889696B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • 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
    • B26D2007/0012—Details, accessories or auxiliary or special operations not otherwise provided for
    • B26D2007/0093—Details, accessories or auxiliary or special operations not otherwise provided for for embossing, forming, creasing, flange forming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4472—Cutting edge section features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4481—Cutters therefor; Dies therefor having special lateral or edge outlines or special surface shapes, e.g. apertures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/002—Precutting and tensioning or breaking

Definitions

  • the present invention relates to a punching device according to the preamble of claim 1 and a method of operating it according to claim 12.
  • a generic punching device and a corresponding operating method are from the DE-A-103 17 015 known.
  • Other generic devices are also in the EP-B-0 773 856 , of the EP-A-1 378 330 and the WO-A-85/01241 and in the non-prepublished European patent application no. 05 020 381 ( EP-A-1 764 194 ).
  • the material sheet to be cut is placed between two wedge-shaped, hollow cylindrical punching blades in the profile.
  • the punching blades are movable against each other for punching. Stops or suitable control ensure that they can not touch each other in their final position. In this way, with the exception of a thin core, the sheet of material is symmetrically cut from two sides.
  • the blank is broken out of the sheet of material by means of a punch-like core, which is arranged in one of the knives.
  • a punch-like core which is arranged in one of the knives.
  • Such devices have the advantage that the punching blades do not wear as easily as, for example, the complete punching through the sheet of material.
  • the punching knife encounters a base.
  • burrs in the region of the top or bottom of the blank edges can be reduced.
  • Such ridges occur, for example, in die-die cutting due to the lateral displacement of the sheet material by the knife.
  • the knife contours defined by the knife crowns are identical in the known punching devices.
  • the contour cut at the top of the sheet of material is congruent with the contour cut at the bottom.
  • punched plastic cards e.g. As bank, credit or chip cards or as identity cards, data page in the passport or driver's license to be used, the generally normalized length and width must comply very closely.
  • the format of credit cards is described in ISO 7810 standard.
  • the cut edges must be smooth with no burrs and no tangible roughness. Because burrs can be used especially for hard plastics such as Polycarbonate during the manufacturing process, the other cards scratch, which should be avoided, since the function of the card can be affected. Furthermore, burrs may cause read errors in later use in card readers, e.g. by hanging the card. In addition, the card should feel comfortable to use. In practice, it has been shown that the quality of the cut edges often does not meet these requirements, even in the generic stamping methods described above.
  • the causes of impaired cutting edges are inter alia the ever-present flexibility of the sheet material or blank.
  • the sheet material bends easily when penetrating the punching knife. Even with precisely aligned first and second knives, therefore, it can not be pushed through the second knife so that the second knife only the soul is severed.
  • the knife edge of the second knife already touches and scratches the portion of the cutting edge already cut by the first knife, even with the smallest offset of the blank relative to the second knife, or planes off this material. This occurs especially in punching devices with an opening extending in the punching direction for piercing the blank, for example according to EP-A-1 378 330 , Because of the opening, the sheet support offers little resistance to the bending of the material sheet during punching.
  • the invention is based on the object of specifying a punching device of the type mentioned, in which blanks with improved quality of the cut edges can be produced.
  • two hollow cylindrical punching knives are used.
  • One of the punching knives is stamped.
  • the second punching knife and its associated carrier device have in the punching direction a through opening through which the blank can be ejected by means of the punch. In this way succeeds an efficient removal of the blanks, without the blades must perform more than the necessary relative to the insertion and punching of the sheet relative stroke.
  • the knife crowns of the punching blades define a first or second knife contour, which essentially corresponds to the outline of the blank to be produced.
  • the knife contours are not exactly identical. Instead, the contour of the stamped knife (first knife contour) is slightly smaller than that of the counter knife (second knife contour).
  • first knife contour in the projection on the punching plane or perpendicular to the punching direction is at least partially, preferably completely, within the second knife contour.
  • the first knife contour at all points by 10-100 microns, more preferably spaced by 30-50 microns from the second knife contour.
  • the result is a blank which has a visible in the optical microscope, but not visible to the naked eye and not palpable lateral paragraph of 10-100 microns width in the cutting edge.
  • a plastic card with such a profile meets the requirements of ISO 7810.
  • the quality of the cut edge is further improved by the punch, which is preferably designed to be complementary to the punch knives, has a flat end face with a raised peripheral edge. This results in the force acting on the blank being concentrated on the edge of the blank.
  • the raised edge and the This hollow area formed between the card and stamp also serves not to damage the card surface during the stamping process. In particular on the card existing security features such as holograms are thereby spared.
  • the penetration depth of the first knife is preferably set by the stamp is lockable relative to the first punching knife at a predetermined distance from the knife crown. It therefore forms a stop for the material sheet, which prevents further penetration of the knife. At the same time it also prevents bending of the material sheet. This ensures that it is cut substantially perpendicular to the surface of the sheet, thus also improving the cut edge quality.
  • the stamp is designed such that air trapped between the stamp and the sheet of material or the blank can escape. This measure also serves to prevent the bending of the sheet and thus the improvement of the cut edge quality.
  • extending between a front surface and a rear surface of the punch vent holes are provided.
  • the sheet is preferably fed in such a way that it can interact with the punching knives largely unhindered and in particular does not bend before or during punching.
  • the punching device is designed so that the movement of the sheet in the punching direction in normal operation not limited by stops.
  • the drive of the punching blade relative to each other is preferably realized so that the punching depth or the stroke of the punching blade can be adjusted without stopping only by means of a suitable control of the drive.
  • a Wegbegrenzer is present as a safety feature, which prevents the collision of the punching blade in case of failure of the controller by ensuring a minimum distance of the punching knife. This minimum distance is preferably maintained solely by suitable control of the blade movement.
  • the punching method according to the invention comprises the production of a blank with a shoulder on the cutting edge. This is preferably circumscribing the blank and has a width of about 10-100 microns, preferably about 30-50 microns.
  • a plastic card preferably produced by the punching method according to the invention has an upper side, a lower side and side surfaces formed by the cutting edge, wherein the underside is larger than the upper side and the side surfaces in profile a paragraph or a step with a width of preferably about 10-100 microns exhibit.
  • Fig. 1 shows an overview punching device according to the invention with a punching tool 4'4, which is held in a frame 40 and a holder.
  • Fig. 2 shows the punching tool 44 in detail.
  • the Figures 3-6 represent the operation of the punching device.
  • the core of the punching device is the actual punching tool 44, which in Fig. 1 and 2 each comprises three pairs of blades, each consisting of an upper first punching knife 10 and a lower second punching knife 12. In Fig. 3-6 For the sake of simplicity, only one pair of knives 10, 12 is shown.
  • First and second punching blades 10, 12 are rigidly connected to a respective carrier device 20, 22, of which in Fig. 3-6 only the lower support device 22 is shown is.
  • the carrier device 22 comprises a blade receiving plate 22 '; the upper support device 20 is designed analogously with a knife-receiving plate 20 '.
  • the knife receiving plates 20 ', 22' can accommodate a plurality of blades 10, 12 side by side. In a blade change, the punching blades 10, 12 are removed and replaced together with their blade receiving plates 20 ', 22'.
  • the carrier device 22 is fixedly connected to the frame 40, while the first punching blade 10 and its carrier device 20 can be moved by means of a suitable drive 36 in the punching direction S and thereby executes a stroke H.
  • the stroke H is adjusted either via stops, not shown here, wherein the drive 36 in this case need not necessarily be adjustable to perform a predetermined stroke.
  • the drive is an electrically controllable, pneumatically or hydraulically operated lifting device whose stroke H is adjusted by means of a control device 42, and in small steps, e.g. in 0.02 mm increments, can be changed.
  • the stroke H is preferably between about 4 and 6 mm.
  • stops may also be present as a security feature, which ensure a predetermined minimum distance of the punching blades 10, 12.
  • the vertically oriented precision rolling guides 32 connected to the carrier devices 20, 22 serve to realize the precise vertical movement of the punching blades 10, 12.
  • the relative position of the punching blades 10, 12 is set in the horizontal direction.
  • the punching blades 10, 12 are oriented in the punching direction S aligned with each other.
  • Vertically oriented, between the carrier devices 20, 22 arranged compression springs 34 serve to stabilize the support devices 20, 22. In addition, their restoring force causes the upward movement of the upper support device 20 during or after the punching.
  • the punching blades 10, 12 are hollow cylindrical and have an in section a substantially in the punching direction S extending inner side 10 a, 12 a and an opposite angled outer side 10 b, 12 b. As a result, a wedge-shaped cutting edge 11, 13 is formed in the punching direction S, which is also called the knife crown.
  • the punching blades 10, 12 face each other in the punching direction S running vertically here.
  • the knife crowns 11, 13 define a first and second knife contour 11 ', 13', which corresponds substantially to the contour of the blank to be produced.
  • the blade crowns 11 ', 13' always located at a specified distance D 'D "from the bottom 21 and top 23 of the upper and lower support device 20, 22.
  • the blade receiving plate 20 ', 22' is preferably adjusted prior to installation in such a way that this distance D ', D "is given. Adjustment work on the punching device itself or on the drive of the upper support device 20, e.g. an adaptation of the stroke H, are therefore unnecessary in normal operation even when changing tools. If a knife must be reground, the loss of material by means of washers between the knife 10, 12 and the blade receiving plate 20 ', 22' can be compensated.
  • a flat sheet support 18 is connected to the lower support device 22 via springs 26 (see FIG. 3-6 ).
  • the support surface 19 of the sheet support 18 is located in Fig. 3 illustrated resting state above the knife crown 13 of the lower punch blade 12, for example, 0.5-1 mm apart to the sheet of material 16 to be able to introduce nondestructive between the two punching blades 10, 12.
  • a punch 14 is disposed within the upper punch blade 10, which can be with a further drive 38 in the vertical direction, ie in the punching direction S, can be moved.
  • the front surface 15 of the punch 14 is offset in the rest state relative to the knife crown 11 of the upper punch blade 10 by an amount D of about 1 mm upwards. This distance D can also be set exactly to the penetration depth T1 of the upper punching blade 10. In the latter case, the punch 14 serves as a stop when punching and helps to stabilize the sheet material 16 against bulging.
  • the lower punching blade 12, the blade receiving plate 22 'and the carrier device 22 enclose a channel-like opening 24 running in the punching direction S, through which the blank 30 can be pushed downwards. Furthermore, the sheet support 18 is provided with a recess 25 which is aligned in the punching direction S with the opening 24 and larger than this.
  • the knife contour 11 ', 13' has approximately the same shape and size for both punching knives 10, 12, but according to the invention the first knife contour 11 'lies in a projection in the punching direction S at least partially within the second knife contour 13'. This is also in Fig. 8 shown.
  • the first blade contour 11 at all points by an amount b of 10-100 microns, more preferably spaced by 30-50 microns from the second blade contour. It is about the naked eye on the punch and on the blank virtually invisible differences.
  • the Fig. 3-6 and 8th make the size difference greatly exaggerated to illustrate the principle.
  • the punching device works as follows: As in Fig. 1 shown, a sheet of material 16 is introduced on the sheet support 18 between the punching blades 10, 12.
  • the sheet support 18 is held by the springs 26, of which a total of preferably four, at a distance from the blade receiving plate 22 '.
  • the punch 14 is located in a relation to the knife crown 11 of the upper punch blade 10 retracted position.
  • a control pulse of the control device 42 actuates the drive 36 and causes the upper support device 20 to move down.
  • a stroke H is made, which is controlled by the control device or adjusted by means of stops.
  • Fig. 4 the lowered position of the upper punch blade 10 is shown in solid lines and the rest position according to Fig. 3 indicated by dashed lines.
  • the punch 14 is still coupled to the upper support device 20 and therefore also moved downwards. Due to the pressure of the upper punching blade 10 on the material sheet 16, the upper punching blade 10 cuts into the sheet of material 16.
  • a blank 30 having an upper-side contour which corresponds to the first knife contour 11 ' is produced.
  • the spring constant of the sheet support 18 supporting springs 26 is chosen so low that the down to press the
  • Sheet support 18 necessary force is many times less than the force exerted by the upper punch blade 10, preferably by a factor of 100-500.
  • the force required to push down the sheet support 18 by typically 2-3 mm is approximately between 50 and 150 N.
  • the sheet support 18 offers virtually no resistance.
  • the movement of the sheet support 18 down preferably is not limited by stops, in particular remains between the lower support device 22 and the blade receiving plate 22 'and the sheet support 18, a gap 48.
  • the recess 25 in the sheet support 18 is so large that the Sheet support 18 when pressing down does not come into contact with the punching blade 12 or the blade receiving plate 22 'or even jammed.
  • the stroke H is selected with the control device 42 or adjusted with stops so that both punches 10, 12 penetrate into a depth T1 or T2, wherein the ratio T1: T2 is about 1: 2 to 1: 3, and a core 28 with a measured in the punching direction S thickness d of about 0.05 to 0.15 mm, preferably about 0.1 mm between the knife edges 11, 13 remains.
  • the core 28 Transverse to the punching direction, the core 28 has a width which corresponds to the above-mentioned distance b of the blade crowns 11, 13.
  • Fig. 5 shows how the blank 30 is pressed out of the material sheet 16 by means of the punch 14.
  • the control device 42 causes the further drive 38 to move the punch 14 relative to the upper punching blade 10.
  • the stroke of the punch 14 relative to the punching blade 10 is for this purpose preferably 10 to 20 mm.
  • An unillustrated lifting cylinder with fixed end positions serves to realize the movement of the punch.
  • Fig. 7 shows a preferred form of the punch 14, in which the outer edges are offset from the rest of the end face 15 in the punching direction S to the front. It is a peripheral edge 14 'is formed. By this edge 14 ', the force acting on the blank 30 force is concentrated on the edges. Air trapped between face 15 and blank 30 may escape via vents 52.
  • the core 28 is severed mainly by the lower punch blade 12. Since the lower punching knife 13 is already cut to a depth T2, the thus defined slides bottom portion 30 "of the blank 30 along the inner surface 12a of the lower punch blade 12 and thereby moves away from the sharp blade crown 13 'without coming into contact with it.”
  • the upper portion 30' of the upper punch blade 10 defined by the penetration depth T1 of the upper punch blade 10
  • the blank 30 is spaced apart from the lower knife edge 13 'on pushing out because of the smaller upper punching blade 11.
  • the intermediate edge of the thickness d is thereby severed cleanly by the lower punching knife 12 when pressed out by the lower punching knife 12.
  • the result is a blank 30 having a top 30a, a bottom 30b and a peripheral circumferential shoulder 50 in the side edge or cutting edge 31.
  • This paragraph 50 has a width that corresponds approximately to the distance b of the knife contours 11 ', 13'. It is detectable by light microscopy, but as a rule not visible or palpable with the naked eye. It also does not affect the function of blanks used as chip, bank or other cards. In particular, ISO standard 7810 is met.
  • the blank 30 falls down through the opening 24 and can be removed there or removed with a suitable transport means 46. Subsequently, the upper support device 20 and the punch 14 are again in their in Fig. 3 brought shown rest position, so that the spring 26 relaxed and the support surface 19 of the sheet support 18 is again arranged above the knife edge 13.
  • an electro-hydraulic or electropneumatic Drive can also be used an eccentric drive, with which also a non-stop movement of the punching knife can be realized with a predetermined stroke.
  • the drive 38 for the punch 14 can also be integrated in the drive 36 for the upper punching blade 10 and the upper support device 20.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Making Paper Articles (AREA)

Claims (14)

  1. Dispositif d'estampage de découpes (30) d'une feuille de matériau (16) en particulier de cartes, dans un matériau de carton, plastique ou composite, comprenant des première et deuxième lames d'estampage (10, 12) en cylindre creux coopérant l'une avec l'autre pour l'estampage, se faisant face l'une à l'autre et disposées sur respectivement un dispositif porteur (20, 22), dont les crêtes de lame (11, 13) définissent un premier, respectivement, un deuxième contour de lame (11', 13'), un entraînement (36) pour au moins un dispositif porteur (20) dans un sens d'estampage (S) arrivant verticalement dans sa direction, des moyens pour régler la profondeur de coupe (T1, T2) des lames d'estampage (10, 12) de telle sorte que les lames d'estampage (10, 12) soient à distance l'une de l'autre pendant la procédure d'estampage, en formant une âme (28) dans la feuille de matériau (16) dans le sens d'estampage (S), et un poinçon (14) disposé à l'intérieur de la première lame d'estampage (10) et mobile par rapport à la première lame d'estampage (10), sachant que la deuxième lame d'estampage (12) et le dispositif porteur (22) qui lui correspond présentent une ouverture traversante (24) dans le sens d'estampage (S), à travers laquelle la découpe (30) peut être estampée au moyen du poinçon (14), caractérisé en ce que le premier contour de lame (11') repose au moins partiellement à l'intérieur du deuxième contour de lame (13') dans une projection dans le sens d'estampage (S).
  2. Dispositif d'estampage selon la revendication 1, caractérisé en ce que le premier contour de lame (11') est distant de 10-100 µm, de préférence de 30-50 µm du deuxième contour de lame (13').
  3. Dispositif d'estampage selon la revendication 1 ou 2, caractérisé en ce que le pourtour du poinçon (14) est formé de manière complémentaire au premier contour de lame (11').
  4. Dispositif d'estampage selon l'une des revendications précédentes, caractérisé en ce que le poinçon présente une surface frontale plane (15) avec un bord périphérique surélevé (14').
  5. Dispositif d'estampage selon l'une des revendications précédentes, caractérisé en ce que le poinçon (14) est ainsi formé que de l'air contenu entre le poinçon (14) et la feuille de matériau (16) respectivement la découpe (30) peut s'échapper, de préférence en ce que des ouvertures d'aération (52) partant d'une surface frontale plane (15) du poinçon (14) sont prévues.
  6. Dispositif d'estampage selon l'une des revendications précédentes, caractérisé en ce que le poinçon (14) peut être bloqué par rapport à la première lame d'estampage (10) à une distance prédéfinie (D) de sa crête de lame (11).
  7. Dispositif d'estampage selon l'une des revendications précédentes, caractérisé par un support de feuille (18) disposé entre les dispositifs porteurs (20, 22) pour introduire la feuille de matériau (16) entre la première et deuxième lame d'estampage (10, 12), sachant que le support de feuille (18) présente un évidement (25) au niveau de la lame d'estampage (10, 12).
  8. Dispositif d'estampage selon la revendication 7, caractérisé en ce que le dispositif porteur (22) pour la deuxième lame d'estampage (12) est fixe et le support de feuille (18) est relié à celui-ci par au moins un ressort (26), sachant que la feuille de matériau (16) reposant sur le support de feuille (18) peut être poussée à l'intérieur de la deuxième lame (12) par le mouvement de la première lame (10).
  9. Dispositif d'estampage selon la revendication 7 ou 8, caractérisé en ce que la constante de rappel du ressort (26) est ainsi choisie que la force nécessaire à l'abaissement du support de feuille (18) est inférieure à la force nécessaire à l'estampage, de préférence inférieure d'un multiple.
  10. Dispositif d'estampage selon l'une des revendications précédentes, caractérisé en ce que les moyens pour régler la profondeur de coupe des lames de coupe comprennent un dispositif de commande (42) qui commande l'entraînement (36) de telle sorte que le sens du mouvement relatif des lames de coupe (10, 12) soit inversé lorsqu'une position de fin prédéfinie est atteinte.
  11. Dispositif d'estampage selon la revendication 10, caractérisé en ce que l'entraînement (36) comprend un dispositif de levage fonctionnant de manière pneumatique ou hydraulique, dont le levage est réglable au moyen du dispositif de commande (42).
  12. Procédé destiné au fonctionnement d'un dispositif d'estampage selon l'une des revendications précédentes, caractérisé par les étapes :
    - d'introduction d'une feuille de matériau (16) entre la première lame d'estampage (10) présentant un premier contour de lame (11'), et la deuxième lame d'estampage (12), qui présente un deuxième contour de lame (13') qui repose au moins partiellement hors du premier contour de lame (11') dans une projection dans le sens d'estampage (S) ;
    - de déplacement l'une sur l'autre de la première et/ou deuxième lame d'estampage (10, 12) dans le sens d'estampage (S) de telle manière que les lames d'estampage (10, 12) soient distantes l'une de l'autre dans le sens d'estampage (S) dans leur position de fin en formant une âme (28) dans la feuille de matériau (16) ;
    - de déplacement du poinçon (14) par rapport à la première lame d'estampage (10) dans le sens d'estampage (S), sachant que la découpe (30) est déplacée le long de la deuxième lame d'estampage (12) au moyen du poinçon, afin de séparer l'âme (28) de sorte qu'une arête de coupe (31) soit produite avec un épaulement (50) présent au moins par tronçons ;
    - d'estampage de la découpe (30) par la deuxième lame d'estampage (12) au moyen du poinçon (14) ;
    - de retrait du poinçon (14) et de retour des lames d'estampage (10, 12) dans leur position de départ.
  13. Découpe (31) fabriquée au moyen d'un dispositif d'estampage selon la revendication 1, en particulier une carte, dans un matériau de carton, plastique ou composite, comprenant une face supérieure (30a), une face inférieure (30b) et une face latérale située à l'extérieur formée par l'arête de coupe (31), caractérisée en ce que la face inférieure (30b) est plus grande que la face supérieure (30a) et que la face latérale située à l'extérieur présente dans le profil un épaulement (50) respectivement un étage.
  14. Découpe selon la revendication 13, caractérisée en ce que l'épaulement (50) respectivement l'étage, présente une largeur de 10-100 µm, de préférence de 30-50 µm.
EP20060016952 2006-08-14 2006-08-14 Appareil pour le poinçonage et méthode utilisant un tel appareil Not-in-force EP1889696B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES06016952T ES2391978T3 (es) 2006-08-14 2006-08-14 Dispositivo de troquelado y proceso para la operación del mismo
EP20060016952 EP1889696B1 (fr) 2006-08-14 2006-08-14 Appareil pour le poinçonage et méthode utilisant un tel appareil

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EP3016786B1 (fr) 2013-07-01 2019-03-06 IDEMIA France Outillage et procede de fragilisation d'un contour dans une carte plastique mince
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EP3016786B1 (fr) 2013-07-01 2019-03-06 IDEMIA France Outillage et procede de fragilisation d'un contour dans une carte plastique mince
DE102015210679A1 (de) * 2015-06-11 2016-12-15 Trumpf Sachsen Gmbh Verfahren zum trennenden Bearbeiten eines plattenartigen Werkstücks sowie Werkzeugmaschine und Bearbeitungsprogramm zum Durchführen des Verfahrens
DE102015210679B4 (de) * 2015-06-11 2018-06-21 Trumpf Sachsen Gmbh Verfahren zum trennenden Bearbeiten eines plattenartigen Werkstücks sowie Werkzeugmaschine und Bearbeitungsprogramm zum Durchführen des Verfahrens
EP3566834B1 (fr) 2018-05-07 2021-04-07 Industrias Tecnológicas de Mecanización y Automatizaciòn, S.A. Outil de découpe de récipient

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