EP2036659B1 - Verfahren zur Herstellung einer Gegenmatritze für das Zuschneiden von Karton - Google Patents

Verfahren zur Herstellung einer Gegenmatritze für das Zuschneiden von Karton Download PDF

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Publication number
EP2036659B1
EP2036659B1 EP20070425562 EP07425562A EP2036659B1 EP 2036659 B1 EP2036659 B1 EP 2036659B1 EP 20070425562 EP20070425562 EP 20070425562 EP 07425562 A EP07425562 A EP 07425562A EP 2036659 B1 EP2036659 B1 EP 2036659B1
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EP
European Patent Office
Prior art keywords
die
insert
supporting plate
counter
grooves
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.)
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Application number
EP20070425562
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English (en)
French (fr)
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EP2036659A1 (de
Inventor
Mauro Albergoni
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.)
Cartoproject Srl
Foppa Fustelle Srl
Original Assignee
Cartoproject Srl
Foppa Fustelle Srl
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Publication date
Application filed by Cartoproject Srl, Foppa Fustelle Srl filed Critical Cartoproject Srl
Priority to EP20070425562 priority Critical patent/EP2036659B1/de
Publication of EP2036659A1 publication Critical patent/EP2036659A1/de
Application granted granted Critical
Publication of EP2036659B1 publication Critical patent/EP2036659B1/de
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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
    • 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
    • B26F2001/4445—Matrices, female dies, creasing tools

Definitions

  • the present invention concerns a method for the set-up of a counter-die which can be combined with the corresponding die of an apparatus for die-cutting/perforating sheets of paper-based material, for example cardboard or card, and the counter-die directly obtained with said method.
  • a die and a counter-die cooperate to perform cutting and/or crease of the sheets according to a predefined pattern.
  • the die is provided with metal blades protruding from a supporting plate, generally made of wood or plywood.
  • the blades are arranged according to a predefined pattern and protrude vertically with respect to the sheet positioned between die and counter-die.
  • the counter-die comprises a plate positioned opposite the die and provided with appropriate grooves for housing, even only partially, blades protruding from the relative supporting plate.
  • Die and counter-die move with respect to each other to provide male-female coupling of the blades with the respective grooves and obtain cutting and/or crease of the sheet at the level of said grooves.
  • a traditional machine for die-cutting is described in the United States patent US 6,189,414 .
  • the traditional counter-dies comprise a supporting plate, generally made of steel, covered at least partly with an insert made of inexpensive material that can be milled.
  • the insert is applied on the surface of the supporting plate opposite the blades of the corresponding die.
  • the insert is generally made of a phenolic resin-based material, for example a multilayer comprising phenolic resin, paper or fabric.
  • PERTINAX One of the materials commonly used for producing the inserts of the counter-dies is known under the trade name PERTINAX.
  • the insert is milled and subsequently glued to the supporting plate. Milling of the insert provides the grooves for the temporary housing of at least one portion of the blades protruding from the corresponding die, when the die engages with the counter-die during cutting and/or crease of the sheet.
  • inserts means that the supporting plate material is not machined directly (which would be very costly). In this way the same plate can be re-used with different inserts, when necessary.
  • An example of counter-die provided with insert made of an easily machinable material for provision of the grooves corresponding to the blades of the die is given in the United States patent US 5,517,880 .
  • One of the main problems of the known technique consists in the fact that the fixing of one or more inserts on a supporting plate of a counter-die requires extreme precision, accuracy and experience and, therefore, negatively affects the times and costs of set-up of the counter-die and relative die-cutting equipment.
  • the set-up of a traditional counter-die initially involves the positioning of one or more inserts, already milled, on the surface of the supporting plate.
  • the lower surface of the inserts is adhesive, i.e. an adhesive layer is provided between the inserts and the supporting plate.
  • the adhesive fixes the inserts when they are pressed against the surface of the supporting plate.
  • the inserts must be positioned so that the relative grooves are all aligned with the corresponding blades protruding from the die.
  • the alignment or "centring" of the inserts is usually performed by specialist technicians and may take more than one hour, to the detriment of the production rate of the die-cutting equipment.
  • the technician checks the centring precision of the inserts glued to the relative supporting plate by performing a trial die-cutting operation, i.e. by engaging the die with the counter-die to die-cut a sheet of paper-based material.
  • a trial die-cutting operation i.e. by engaging the die with the counter-die to die-cut a sheet of paper-based material.
  • the blades of the die and the relative grooves obtained in the inserts are aligned and the cutting and crease lines obtained on the sheet correspond to the expected quality standards. If the centring is not satisfactory, the technician detaches the inserts from the supporting plate and re-positions them.
  • the object of the present invention is to make available a method for the set-up of counter-dies, which can be combined with the corresponding dies of equipment for die-cutting/crease, which provides high savings in terms of time and costs with respect to the traditional technical solutions.
  • a further object of the present invention is to make available a method for the set-up of counter dies, which can be combined with the corresponding dies of die-cutting/crease equipment, for maximising the quality of the cutting and crease lines that can be obtained on the relative blanks.
  • the method for set-up of a counter-die which can be combined with the die of apparatus for die-cutting/crease of sheets made of cardboard or card for example, comprises the phases of providing a supporting plate and at least one insert which can be fixed to the surface of the plate and obtaining one or more grooves on the surface of each insert.
  • Each groove has the function of accommodating at least partly a corresponding blade of the die at the level of a cutting or crease line of the relative blank.
  • the phase of obtaining the grooves on the insert is performed after fixing of the insert to the supporting plate of the counter-die and not before fixing of the insert to the plate.
  • the grooves are machined using automatic machines.
  • the position of each groove to be machined is determined according to one or more geometric references on the supporting plate.
  • the method does not involve other phases for gluing of the inserts apart from the one cited, i.e. the inserts are not glued to a second supporting plate for the removal of excess material after machining of the grooves.
  • the supporting plate on which the insert has been machined is provided directly in the die-cutting equipment, without the need to transfer one or more machined inserts onto other supporting plates.
  • the insert is a plastic blade, having a surface hardness equivalent to or higher than that of PERTINAX, which can be fixed to the surface of said supporting plate by gluing.
  • the inserts can be sheets made of PERTINAX or a material known under the trade name VINILPRINT, or a phenolic resin-based material or another plastic material.
  • the thickness of the inserts is chosen according to the traditional criteria and depends on the thickness of the cardboard or card to be die-cut by the die and counter-die.
  • the inserts are fixed to the surface of the counter-die supporting plate (the surface that will interact with the corresponding die) by means of double-sided tape.
  • the insert is obtained by applying, with uniform thickness, a resin or a plastic substance in liquid form on the counter-die supporting plate. As it dries, the resin or plastic substance hardens and adheres to the surface of the supporting plate, forming a rigid insert.
  • the grooves are obtained on the free surface of the relative insert by machining, which preferably comprises at least one milling phase.
  • the milling is performed, for example, with a micro-milling cutter of a computer numeric control (CNC) machine directly on the inserts integral with the relative supporting plate.
  • CNC computer numeric control
  • One particular aspect of the present invention is therefore that of machining the inserts with automatic numeric control machines when said inserts are integral with the supporting plate of the counter-die to be set up.
  • This allows the geometric references on the supporting plate to be used for initialisation or "pre-setting" of the numeric control machine.
  • operation of the machine that machines the grooves of the inserts requires detection of the machine datum point, i.e. a reference point for measurement of the machining dimensions. Since the inserts are integral with the supporting plate, the computer numeric control (CNC) machine uses the reference points present on the plate to define the machine datum point, enormously simplifying the pre-setting phase.
  • CNC computer numeric control
  • the numeric control machine operates automatically, on the basis of the processing of electronic files, obtaining the inserts rapidly and with extreme dimensional precision.
  • the geometric reference points of the supporting plate can be various, for example they can be the centring holes of the plate on the die-cutting equipment or the edges or corners of the plate itself, etc..
  • the numeric control machine After the numeric control machine has acquired the geometric references necessary for definition of the machine datum point, it performs milling of the insert or inserts fixed to the supporting plate, removing part of the material of the insert to obtain the grooves corresponding to the blades of the die.
  • the data relative to the geometry of each groove for example the data relative to the length, depth, curvature, form in cross section etc., are stored electronically in the form of files that can be accessed by the machine control unit.
  • said files can be the same CAD files as those used for laser cutting of the wooden supporting plate of the die, or specific CAD files for the counter-die.
  • the method according to the present invention permits a saving of 30 to 60 minutes for set-up of the counter-die with respect to the known solutions.
  • Figure 1 shows, in a perspective view, a counter-die 1 for set-up with the method according to the present invention to operate in combination with the die of a die-cutting machine (not shown).
  • the counter-die 1 in general comprises a supporting plate 2, preferably made of metal, for example steel or aluminium, on the upper surface 22 of which one or more inserts 3 can be fixed.
  • the upper surface 22 of the supporting plate 2 is positioned opposite the corresponding die of the equipment and the sheets to be die-cut are fed in an intermediate position between the die and the counter-die 1.
  • the dimensions of the supporting plate can vary according to the use of the counter-die 1, i.e. according to the type of blanks to be produced.
  • the supporting plate 2 can have dimensions equal to 60x50x0.5 cm, respectively along the reference axes X, Y and Z shown in figure 1 .
  • the supporting plate 2 there is at least one geometric reference, for example an assembly hole 23, a notch 24, a groove, or one of the corners 25 of the plate itself, etc.
  • the inserts 3 can be made of a plastic material which can be easily fixed to the upper surface 22 of the supporting plate 2.
  • the inserts 3 are plastic sheets having a gauged thickness.
  • the material of the inserts 3 is chosen to obtain a surface hardness equivalent to or higher than that of PERTINAX. Suitable materials for the purpose are, for example, PERTINAX and VINILPRINT. The hardness of the material is important to prevent rapid wear of the inserts following die-cutting. For this reason, pressboard, for example, is not suitable.
  • the inserts 3 shown in figure 1 are intact, as the counter-die 1 is not completed. In other words, the inserts 3 shown in figure 1 still have to be machined to obtain the grooves necessary for accommodating, even only partially, the blades of a corresponding die and to remove the excess material.
  • the inserts 3 are fixed to the supporting plate 2 by interposition of an adhesive material, preferably double-sided tape, i.e. tape with two opposite adhesive surfaces.
  • an adhesive material preferably double-sided tape, i.e. tape with two opposite adhesive surfaces.
  • the inserts 3 can be obtained by depositing a layer of plastic in liquid form which, as it dries, solidifies and fixes to the supporting plate 2.
  • Figure 2 shows the counter-die 1 during machining of the grooves.
  • the counter-die 1 shown in section along the line A-A of figure 1 , is positioned fixed on the work surface 7 of an automatic manufacturing machine 9.
  • the inserts 3 and the double-sided tape 8 for fixing to the supporting plate 2 can be seen.
  • the dimensions of the inserts 3, of the tape 8 and plate 2 shown in figures 1 and 2 are not real, since said elements are shown enlarged for greater clarity.
  • the machine 9 is preferably a computer numeric control (CNC) machine provided with at least one tool 10, which can move on the surface along the axes X, Y and height-wise along the Z axis (three-axis machine).
  • the tool 10 is a milling cutter or a micro milling cutter, for example.
  • set-up of the counter-die 1 entails the machine 9 operating automatically for machining of the grooves and removal of the excess material from the inserts 3. In this way set-up times and costs are minimised.
  • the machine 9 detects at least one geometric reference present on the supporting plate 2, for example the position and/or direction of an assembly hole 23, notch 24, one of the corners 25, etc., and on the basis of said detection operates the tool 10 to obtain one or more grooves in the inserts 3.
  • the geometric references 23, 24, 25 present on the supporting plate 2 are acquired by the CNC machine 9 for definition of the machine datum point during pre-setting of said machine 9, i.e. for definition of the machining dimensions.
  • This characteristic permits machining of the inserts 3, obtaining the grooves and removing the material with extreme positioning precision. The result obtained is shown in figure 3 .
  • Figure 3 is a perspective view of the counter-die 1 set up, i.e. completed and ready for the production of blanks.
  • the numeric control machine 9 has machined a plurality of grooves 31 on the surface of the inserts 3 and has removed excess material at the edges 32 of the inserts 3.
  • Said grooves 31 can be oriented in various ways on the surface, and can be straight or curved.
  • the position of the grooves 31 with respect to the geometric references taken into consideration on the plate 2 is extremely accurate and is equal to the positioning precision of the tool 10 of the machine 9, for example in the order of one hundredth of a millimetre.
  • Figure 4 shows the counter-die 1 in cross section along the line B-B of figure 3 , combined with a corresponding die 11 of a machine for die-cutting sheets of cardboard or card 12.
  • the counter-die 1 is fixed on a work surface and the die 11 moves vertically in an alternating manner on the Z axis to die-cut sheets 12 fed in an intermediate position.
  • the die 11 can be fixed and the counter-die can move along the Z axis.
  • the die 11 comprises a supporting plate 14, preferably made of wood or plywood, and a plurality of blades 13, for example metal strips vertically inserted in slots obtained in the wood, protruding from the lower surface.
  • a groove 31 in the insert 3 of the opposite counter-die 1 corresponds to each blade 13.
  • the numeric control machine 9 operates on the basis of processing of information in electronic form, for example information relative to the geometry of the die 11 and/or of the counter-die 1, coded in CAD files.
  • the set-up method according to the present invention permits realisation of the counter-die 1 with the inserts 3 fixed on the surface 22 already centred with respect to the corresponding blades 13, i.e. without the need for a specialist technician to intervene to check or correct the centring (positioning of the inserts 3 with respect to the blades 13), with evident savings in terms of time and cost and an increase in production rate.
  • the counter-die set up in this way is ready for use without further delays or machining operations.

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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)

Claims (10)

  1. Verfahren zur Herstellung einer Gegenmatrize (1), welche mit einer Matrize (11) einer Vorrichtung zum Ausstanzen/Falten von Materialbögen (12) zusammenwirken kann, umfassend den Schritt des Bereitstellens einer Grundplatte (2) und wenigstens eines Formteils (3), das an der Oberfläche der Grundplatte (2) befestigt werden kann, und den Schritt des Bereitstellens einer oder mehrerer Ausnehmungen (31) in der Oberfläche des wenigstens einen Formteils (3), wobei jede Ausnehmung (31) zur wenigstens teilweisen Aufnahme einer entsprechenden Schneide (13) der Matrize (11) ausgebildet ist, entsprechend einer Schnitt- oder Perforationslinie des entsprechenden Materialbogens,
    dadurch gekennzeichnet, dass
    der Schritt des Bereitstellens der Ausnehmungen (31) am entsprechenden Formteil (3) nach dem Befestigen des Formteils (3) an der Grundplatte (2) durchgeführt wird, wobei ein oder mehrere auf der Grundplatte (2) vorhandene geometrische Bezüge (23, 24, 25) zur Bestimmung der Lage jeder Ausnehmung (3) genutzt werden.
  2. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, dass
    das Formteil (3) eine Kunststoffplatte ist, welche durch Kleben mit der Oberfläche (22) der Grundplatte (2) befestigt werden kann.
  3. Verfahren gemäß Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass
    die Ausnehmungen (31) auf der freien Oberfläche des entsprechenden Formteils (3) mittels eines Maschinenbearbeitungsvorgangs bereitgestellt werden.
  4. Verfahren gemäß Anspruch 3,
    dadurch gekennzeichnet, dass
    der Maschinenbearbeitungsvorgang mit automatischen Maschinen (9) durchgeführt wird und wenigstens einen Fräsvorgang umfasst.
  5. Verfahren nach Anspruch 3 oder 4,
    dadurch gekennzeichnet, dass
    der Maschinenbearbeitungsvorgang direkt an dem wenigstens einen mit der Grundplatte (2) verbundenen Formteil (3) mittels einer oder mehrerer compurisierter numerischer Steuerungsmaschinen (CNC) durchgeführt wird.
  6. Verfahren gemäß Anspruch 5,
    dadurch gekennzeichnet, dass
    es den Schritt des kodierens der Informationen entsprechend der geometrischen Eigenschaften der Ausnehmungen (31) in Dateien in elektronischem Format umfasst.
  7. Verfahren gemäß Anspruch 6,
    dadurch gekennzeichnet, dass
    die numerische Steuerungsmaschine (9) die Voreinstellung vornimmt und auf Basis des Verarbeitens der Dateien arbeitet.
  8. Verfahren gemäß Anspruch 6 oder Anspruch 7,
    dadurch gekennzeichnet, dass
    es den Schritt des Initialisierens der numerischen Steuerungsmaschine (9) umfasst, oder Vorbereiten dieser zum Bearbeiten des Formteils (3) auf Grundlage der geometrischen Bezüge (23, 24, 25) auf der Grundplatte (2).
  9. Verfahren gemäß einem der vorgehenden Ansprüche 1 bis 8,
    dadurch gekennzeichnet, dass
    das Material des wenigstens einen Formteils (3) eine Oberflächenhärte gleich oder größer als der von der PERTINAX aufweist.
  10. Verfahren gemäß einem der vorhergehenden Ansprüche 1 bis 9,
    dadurch gekennzeichnet, dass
    das wenigstens eine Formteil (3) aus einem Material hergestellt ist, ausgewählt aus PERTINAX, VINILPRINT, einem phenolharzbasierten Material, FORMICA.
EP20070425562 2007-09-12 2007-09-12 Verfahren zur Herstellung einer Gegenmatritze für das Zuschneiden von Karton Active EP2036659B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20070425562 EP2036659B1 (de) 2007-09-12 2007-09-12 Verfahren zur Herstellung einer Gegenmatritze für das Zuschneiden von Karton

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Application Number Priority Date Filing Date Title
EP20070425562 EP2036659B1 (de) 2007-09-12 2007-09-12 Verfahren zur Herstellung einer Gegenmatritze für das Zuschneiden von Karton

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EP2036659A1 EP2036659A1 (de) 2009-03-18
EP2036659B1 true EP2036659B1 (de) 2010-12-01

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008034764A1 (de) * 2008-07-25 2010-01-28 Heidelberger Druckmaschinen Ag Werkzeug für eine Bogenstanzmaschine
US9102818B2 (en) 2010-05-17 2015-08-11 Highcon Systems Ltd. Method and system for surface adhesive rule technology
US20110294913A1 (en) 2010-05-17 2011-12-01 Michael Zimmer Flexible material for surface adhesive rule
ITUA20163721A1 (it) * 2016-05-24 2017-11-24 Pro Form S R L Metodo di realizzazione di una controfustella, unità di adeguamento per una fresatrice e fresatrice comprendente tale unità
CN108237581B (zh) * 2016-12-23 2024-04-02 上海昊佰智造精密电子股份有限公司 一种用于单面胶的冲孔套孔一体式模切装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831393A1 (de) * 1988-09-15 1990-03-22 Wolfgang Prof Dr Ing Grebe Traegerplatte
DE9214654U1 (de) * 1992-10-28 1994-03-03 Pce Paper Converting Equipment Matrizenbogen für ein Stanzwerkzeug zum Herstellen von Kartonagenzuschnitten
US6189414B1 (en) * 1995-12-19 2001-02-20 Yoshizawa Industry Inc. Counter plate and cutting die for die cutting machine
NO311560B1 (no) * 1996-02-16 2001-12-10 Marbach Gmbh Karl Fremgangsmåte til fremstilling av rillede, stansede deler fra en materialplate
DE19800374A1 (de) * 1998-01-09 1999-07-15 Juergen Zimmel Verfahren zur Herstellung einer Gegenstanzplatte einer Stanzvorrichtung

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