EP3967512A1 - Dispositif d'estampage de feuilles - Google Patents

Dispositif d'estampage de feuilles Download PDF

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Publication number
EP3967512A1
EP3967512A1 EP20196045.7A EP20196045A EP3967512A1 EP 3967512 A1 EP3967512 A1 EP 3967512A1 EP 20196045 A EP20196045 A EP 20196045A EP 3967512 A1 EP3967512 A1 EP 3967512A1
Authority
EP
European Patent Office
Prior art keywords
embossing
plate
base
insert
inserts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20196045.7A
Other languages
German (de)
English (en)
Other versions
EP3967512B1 (fr
Inventor
Anton BURESCH
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.)
Gerhard Rauch GesMBH
Original Assignee
Gerhard Rauch GesMBH
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
Application filed by Gerhard Rauch GesMBH filed Critical Gerhard Rauch GesMBH
Priority to HRP20231738TT priority Critical patent/HRP20231738T1/hr
Priority to DK20196045.7T priority patent/DK3967512T3/da
Priority to PL20196045.7T priority patent/PL3967512T3/pl
Priority to EP20196045.7A priority patent/EP3967512B1/fr
Priority to US17/472,851 priority patent/US11524476B2/en
Publication of EP3967512A1 publication Critical patent/EP3967512A1/fr
Application granted granted Critical
Publication of EP3967512B1 publication Critical patent/EP3967512B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/0052—Machines or apparatus for embossing decorations or marks, e.g. embossing coins by pressing
    • B44B5/0057—Machines or apparatus for embossing decorations or marks, e.g. embossing coins by pressing using more than one die assembly simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/0004—Machines or apparatus for embossing decorations or marks, e.g. embossing coins characterised by the movement of the embossing tool(s), or the movement of the work, during the embossing operation
    • B44B5/0019—Rectilinearly moving embossing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories
    • B44B5/026—Dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0753—Roller supporting, positioning, driving means

Definitions

  • the invention relates to a device for embossing foils, with a basic embossing plate and a counter-embossing plate, the mutually facing surfaces of which are each at least partially flat and which, for embossing a foil lying between them, have their at least partially flat surfaces aligned parallel to one another on the one hand towards one another and on the other hand from one another are arranged such that they can be moved away, the base stamping plate being provided on its side facing the counter-stamping plate with a plurality of stamping inserts for stamping a plurality of blanks to be stamped out of the foil, and the stamping inserts being designed and arranged in such a way that when the foil is stamped they each have a interact with the corresponding embossing area arranged on the side of the counter-embossing plate facing the base embossing plate.
  • Films in the packaging sector typically have a thickness between 10 and 150 ⁇ m and can be provided with a wide variety of embossing.
  • This embossing can be full-surface, partial or edge embossing.
  • the reason for these embossings is typically to ensure the separation of the foils when they are presented in the form of a stack of foils for their attachment to, for example, a container, as explained below.
  • sealing films are used in the packaging industry for a large number of different products, for example as closures for corresponding packaging containers such as cups or boxes.
  • the sealing foils are often obtained by punching out appropriate shapes from a strip-shaped material.
  • the material used can be, for example, aluminum foil, plastic foil or composite materials made of plastic and aluminum.
  • the material is often printed on at least one or both sides.
  • the sealing foils are typically glued or welded onto the containers.
  • the slides on the the side facing the packaging container can be provided, for example, with a layer of heat-sealing lacquer.
  • the shaped pieces obtained are usually stacked.
  • the shaped pieces e.g. provided as lids
  • suitable gripping systems such as vacuum grippers
  • the shaped pieces provided as lids are then connected to the packaging container under the action of pressure and/or heat.
  • embossing is partially omitted in order to achieve better readability by barcode scanners.
  • methods using engraved rollers or embossing plates are known. This embossing can also be carried out in a controlled manner using tactile marks for the printed image.
  • a problem that frequently occurs is that the foils used to be embossed can have differences in material thickness of up to 5 ⁇ m across the embossing width. As a rule, 2 to 18 blanks to be punched are arranged across the embossing width. Therefore, in many cases, there are different embossing depths for the different blanks that are punched out. This has negative effects on the ability to unstack and the stability of a stack of blanks manufactured in this way. If, for example, the embossing depth of the individual blanks varies greatly in the case of pure edge embossing, a stable stack of blanks cannot be formed, which can lead to considerable problems on the filling system - targeted removal is often not possible.
  • a device for embossing foils with a base embossing plate and a counter-embossing plate, the mutually facing surfaces of which are each at least partially flat and which, for embossing a foil lying between them, have their at least partially flat surfaces aligned parallel to one another on the one hand towards one another and on the other hand are arranged to be movable away from one another, with the base stamping plate being provided on its side facing the counter-stamping plate with a plurality of stamping inserts for stamping a plurality of blanks to be stamped out of the film, and with the stamping inserts being designed and arranged in such a way that when the film is stamped they each a corresponding embossing area arranged on the side of the counter-embossing plate facing the base embossing plate, characterized in that each embossing insert can be held by means of its own embossing insert retainer in the direction normal to the w surface of
  • an otherwise conventionally constructed device for embossing foils is provided with such embossing inserts on its base embossing plate, each of which has its own embossing insert retainer, its own embossing insert spring and its own embossing insert guide.
  • each embossing insert is provided with its own embossing insert retainer, with its own embossing insert spring and with its own embossing insert guide means that such devices are provided separately for each embossing insert that interact only with this embossing insert and with no other. In this way, the invention allows the movement of each die when embossing the foil to be independent of the movements of the other dies.
  • embossing inserts to behave in such a way that they are independent of one another "react" to different foil thicknesses, so that the embossing depth is essentially the same despite the different thicknesses. So if the foil to be embossed shows differences in its material thickness across its surface, this can be compensated for by the separate storage, springing and guidance of the individual embossing inserts. Fluctuations in the film thickness, which would otherwise have led to different embossing depths, can thus be compensated. In the best case, practically the same embossing depth can be achieved in this way with every embossing insert.
  • the embossing insert retainer ensures the basic attachment of the embossing insert to the base embossing plate.
  • This fastening is such that the embossing insert can basically be moved relative to the base embossing plate, namely a movement in the normal direction to the at least partially planar surface of the base embossing plate is possible.
  • each embossing insert during embossing namely when the film is pressed between a respective embossing insert and a corresponding embossing area on the counter-embossing plate, allows the respective embossing insert to "pull back" to a certain extent towards the base support plate.
  • This evasion or retreat of the respective embossing insert takes place in a controlled manner due to the embossing insert resilience assigned to the respective embossing insert in combination with the respective embossing insert guide, so that even with different material thicknesses over the surface of the foil to be embossed, there are differences in the embossing depths for the different Embossing inserts can be reduced or avoided entirely.
  • the embossing insert retainers can be designed in different ways. According to a preferred development of the invention, however, the embossing insert retainers each have a damping device for damping the possible movement of the respective embossing insert relative to the base embossing plate. Such a damping device therefore offers a certain resistance to the movement of the respective embossing insert, which makes the movement of the embossing insert relative to the base die plate more controllable.
  • the damping device comprises a spring bolt and/or a damping disk. It is particularly preferred that the embossing inserts are each held on the base embossing plate by means of a fastening device, the fastening device being guided through the damping device. If, for example, a spring bolt in combination with a damping disk is provided as the damping device in connection with this preferred embodiment of the invention, a screw is preferably passed through these components, with which the respective embossing insert is fastened to the base embossing plate.
  • the embossing insert guides each have a column guided in a bushing. It is preferably also the case here that the column of a respective embossing insert guide is fastened in the respective embossing insert and the sleeve is fastened in the base die plate.
  • each embossing insert is provided with a plurality of embossing insert guides and/or with a plurality of embossing insert springs.
  • the shape of the embossing inserts is essentially round, with the embossing insert retainer being arranged centrally in each embossing insert. In this way, a particularly stable mounting and guiding of the embossing inserts on the base embossing plate is ensured.
  • the device according to the invention for embossing foils can also be designed differently with regard to the transport of the foil to be embossed and the arrangement of the embossing inserts. According to a preferred development of the invention, however, it has a transport device with which the film to be embossed can be moved in a transport direction relative to the base embossing plate, with at least some of the plurality of embossing inserts next to one another in a direction perpendicular to the transport direction are arranged. In other words, this means that according to this preferred development of the invention, at least some of the embossing inserts are arranged widthwise perpendicular to the working direction given by the transport direction of the film.
  • the embossing inserts which are arranged next to one another in a direction perpendicular to the transport direction, are at least partially offset from one another in the transport direction.
  • Such a staggered arrangement makes it possible to arrange as large a number of embossing inserts as possible on the surface provided by the base embossing plate, for example in the case of essentially round embossing inserts in the form of a practically hexagonal arrangement of the embossing inserts relative to one another, which leads to practically optimal utilization of the available surface.
  • the embossing areas in the counter-plate that correspond to the embossing inserts provided in the base embossing plate can basically be configured in a conventional manner.
  • the embossing areas corresponding to the embossing inserts provided in the base embossing plate are configured as inserts that are detachably fastened in the counter-plate.
  • the embossed areas designed as such inserts can be screwed into the counter-plate.
  • the inserts are mounted in the counter-plate in an unsprung manner, preferably screwed in an unsprung manner in the counter-plate.
  • An embossing and punching system 100 can be seen schematically, with which sealing lids can be embossed and punched out of a sheet-like foil 17, such as an aluminum foil or an aluminum/plastic composite foil.
  • the system 100 has a transport device 16 which firstly feeds the sheet-like film 17 to an embossing device 1 .
  • the embossing device 1 is explained in detail below.
  • the foil 17 embossed by means of the embossing device 1 is then fed to a punching device 19, by means of which embossed foil elements, also referred to as blanks, are punched out.
  • the embossed and punched film elements are finally stacked in a stack 20 and are thus available for further processing.
  • FIG Figure 2a shows the embossing device 1 in a section
  • Figure 2b shows the embossing device 1 in a plan view
  • Figure 2c shows the embossing device 1 in a side view along its long side
  • Fig. 2d 12 showing the embossing device 1 in a side setup along its short side.
  • the embossing device has a base embossing plate 2 and a counter embossing plate 3 .
  • the largest part of the surfaces of the base die 2 and the counter die 3 are formed by planar sections that are parallel to each other, in which in Figure 2a sectional view shown, namely run horizontally.
  • the base die plate 2 is connected to the counter die plate 3 by means of die guides 21 in such a way that the base die plate 2 and the counter-stamping plate 3 can be moved towards one another on the one hand and away from one another on the other hand in a parallel orientation to one another.
  • the embossing device 1 is practically opened so that the foil 17 to be embossed can be guided between the base embossing plate 2 and the counter embossing plate 3 .
  • the base embossing plate 2 and the counter embossing plate 3 are moved towards one another, so that finally the actual embossing process of the film 17 between the base embossing plate 2 and the counter embossing plate 3 occurs.
  • the base embossing plate 2 is provided with a plurality of embossing inserts 4, in this case eight, which correspond to eight embossing areas 5 in the counter-embossing plate.
  • embossing areas 5 in the counter-embossing plate 3 are in the present case in the form of inserts which are unsprung screwed into the counter-embossing plate 3 with the aid of screws 18.
  • the mutually facing surfaces of the embossing areas 5 and the embossing inserts 4 are the same as in conventional embossing devices known, designed in such a way that the desired embossing occurs during the actual embossing process on the film lying between the embossing inserts 4 and the embossing areas 5 .
  • the embossing inserts 4 and thus also the embossing areas 5 are perpendicular to the in Figure 2b Transport direction T marked with an arrow arranged side by side.
  • the embossing inserts 4 and thus also the embossing areas are also offset from one another in the transport direction. This leads to a practically optimal utilization of the available space.
  • embossing device 1 according to the preferred exemplary embodiment of the invention described here has such embossing inserts 4, each of which can be held by its own embossing insert retainer 6 in the normal direction, in Figure 2b i.e. perpendicular to the plane of the drawing, are held on the base die 2 so that they can be moved by a predetermined amount relative to the planar surfaces of the base die 2, being cushioned in relation to the base die 2 by means of their own die insert spring system 7 and by means of their own die insert guide 8 in the cushioned movement thus made possible are led to the base stamping plate 2.
  • the embossing insert retainer 6 ensures the basic attachment of the embossing insert 4 to the base die plate 2 in such a way that a certain movement of the embossing insert 4 remains possible. This corresponds to a movement of the embossing insert 4 relative to the base embossing plate 2 in a direction parallel or anti-parallel to the direction in which the base embossing plate 2 and the counter embossing plate 3 are moved towards one another for embossing the foil 17 .
  • each embossing insert 4 during embossing namely when the film 17 is pressed between a respective embossing insert 4 and a corresponding embossing area 5 on the counter-embossing plate 3, allows the respective embossing insert 4 to "pull back" to a certain extent towards the base support plate 2 will.
  • each of the eight embossing inserts 4 has a centrally arranged embossing insert retainer, three embossing insert guides 8 and six embossing insert springs 7 . In the present case, these are configured as described below.
  • the embossing insert retainer 6 has a damping device 9 for dampening the possible movement of the embossing insert 4 on which it is provided relative to the base embossing plate 2 .
  • the damping device 9 includes a spring bolt 10 and a damping disk 11 . The fact that this holder allows a certain movement of the embossing insert 4 relative to the base embossing plate 2 is due to the spring bolt 10 and the damping disk 11 .
  • embossing insert guide 8 also in section. It can be seen here that the embossing insert guide 8 has a column 14 guided in a bushing 13 . The column 14 is fastened in the respective embossing insert 4 while the bush 13 is held in the base embossing plate 2 .
  • embossing insert spring 7 used here can be seen. It can be seen that the embossing insert spring mechanism 7 has an elastic element 15 fastened to the respective embossing insert 4 .
  • This elastic element is preferably made of a rubber material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
EP20196045.7A 2020-09-14 2020-09-14 Dispositif d'estampage de feuilles Active EP3967512B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
HRP20231738TT HRP20231738T1 (hr) 2020-09-14 2020-09-14 Uređaj za utiskivanje filma
DK20196045.7T DK3967512T3 (da) 2020-09-14 2020-09-14 Anordning til prægning af folier
PL20196045.7T PL3967512T3 (pl) 2020-09-14 2020-09-14 Urządzenie do wytłaczania folii
EP20196045.7A EP3967512B1 (fr) 2020-09-14 2020-09-14 Dispositif d'estampage de feuilles
US17/472,851 US11524476B2 (en) 2020-09-14 2021-09-13 Device for embossing foils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20196045.7A EP3967512B1 (fr) 2020-09-14 2020-09-14 Dispositif d'estampage de feuilles

Publications (2)

Publication Number Publication Date
EP3967512A1 true EP3967512A1 (fr) 2022-03-16
EP3967512B1 EP3967512B1 (fr) 2023-12-06

Family

ID=72603311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20196045.7A Active EP3967512B1 (fr) 2020-09-14 2020-09-14 Dispositif d'estampage de feuilles

Country Status (5)

Country Link
US (1) US11524476B2 (fr)
EP (1) EP3967512B1 (fr)
DK (1) DK3967512T3 (fr)
HR (1) HRP20231738T1 (fr)
PL (1) PL3967512T3 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08281340A (ja) * 1995-04-11 1996-10-29 Amada Metrecs Co Ltd パンチプレスにおける刻印方法および刻印装置
EP1099509A1 (fr) * 1999-10-14 2001-05-16 Mate Precision Tooling Inc. Méthode et appareil pour marquer des pièces de travail
EP1457275A1 (fr) * 2003-03-12 2004-09-15 UNIMET GmbH Outil à suivre pour presse d'emboutissage
EP3197616A1 (fr) * 2015-10-07 2017-08-02 Pass Stanztechnik AG Outil multiple pour un dispositif d'estampage
DE102016114026A1 (de) * 2016-07-29 2018-02-01 Tox Pressotechnik Gmbh & Co. Kg Vorrichtung zum Prägen und Durchstanzen eines Werkstücks
EP3321097A1 (fr) * 2016-11-10 2018-05-16 Gerhard Rauch Ges.m.b.H. Dispositif et procédé d'estampage de feuilles multifonction

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7096709B2 (en) * 2004-05-21 2006-08-29 Universal Engraving, Inc. Graphic arts die and support plate assembly
US8146494B2 (en) * 2007-04-27 2012-04-03 Universal Engraving, Inc. Magnetic chase and graphic arts die assembly with selectively actuatable means for raising and supporting the die plate during alignment
DE102015201325A1 (de) * 2014-02-21 2015-08-27 Heidelberger Druckmaschinen Ag Verfahren und Vorrichtung zum Niederhalten eines Bogens auf dem Zuführtisch einer Bogen verarbeitenden Maschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08281340A (ja) * 1995-04-11 1996-10-29 Amada Metrecs Co Ltd パンチプレスにおける刻印方法および刻印装置
EP1099509A1 (fr) * 1999-10-14 2001-05-16 Mate Precision Tooling Inc. Méthode et appareil pour marquer des pièces de travail
EP1457275A1 (fr) * 2003-03-12 2004-09-15 UNIMET GmbH Outil à suivre pour presse d'emboutissage
EP3197616A1 (fr) * 2015-10-07 2017-08-02 Pass Stanztechnik AG Outil multiple pour un dispositif d'estampage
DE102016114026A1 (de) * 2016-07-29 2018-02-01 Tox Pressotechnik Gmbh & Co. Kg Vorrichtung zum Prägen und Durchstanzen eines Werkstücks
EP3321097A1 (fr) * 2016-11-10 2018-05-16 Gerhard Rauch Ges.m.b.H. Dispositif et procédé d'estampage de feuilles multifonction

Also Published As

Publication number Publication date
PL3967512T3 (pl) 2024-04-29
DK3967512T3 (da) 2024-03-11
HRP20231738T1 (hr) 2024-03-15
EP3967512B1 (fr) 2023-12-06
US11524476B2 (en) 2022-12-13
US20220080694A1 (en) 2022-03-17

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