EP2551114B1 - Inductively heated cylinder having an embossing tool - Google Patents

Inductively heated cylinder having an embossing tool Download PDF

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Publication number
EP2551114B1
EP2551114B1 EP12177050.7A EP12177050A EP2551114B1 EP 2551114 B1 EP2551114 B1 EP 2551114B1 EP 12177050 A EP12177050 A EP 12177050A EP 2551114 B1 EP2551114 B1 EP 2551114B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
tool
embossing
induction coil
sleeve
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.)
Active
Application number
EP12177050.7A
Other languages
German (de)
French (fr)
Other versions
EP2551114A1 (en
Inventor
Thomas Demand
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.)
Gallus Druckmaschinen GmbH
Original Assignee
Gallus Druckmaschinen GmbH
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Publication date
Application filed by Gallus Druckmaschinen GmbH filed Critical Gallus Druckmaschinen GmbH
Publication of EP2551114A1 publication Critical patent/EP2551114A1/en
Application granted granted Critical
Publication of EP2551114B1 publication Critical patent/EP2551114B1/en
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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
    • B44B5/02—Dies; Accessories
    • B44B5/028—Heated dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/02—Apparatus or machines for carrying out printing operations combined with other operations with embossing
    • B41F19/06—Printing and embossing between a negative and a positive forme after inking and wiping the negative forme; Printing from an ink band treated with colour or "gold"
    • B41F19/062—Presses of the rotary type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/30—Printing dies
    • B41P2219/31—Heating means

Definitions

  • Device for heating at least one tool which is arranged on the circumference of a rotatable cylinder.
  • the invention relates to a device for heating at least one tool, which is arranged on the circumference of a rotatable cylinder.
  • GB 2 276 350 A describes a rotatable cylinder intended to be suitable for imparting fine structures to a substrate using a foil.
  • US 4,453,468 describes a holder for printheads in printing machines based on permanent magnets, which comprises a good heat conducting material.
  • WO 95/33575 A1 describes a device for coloring embossed sheets by means of a heated embossing roll.
  • the invention has for its object to provide a tool-carrying cylinder having a device for heating the tool.
  • the warm-up time for the tools is minimized, since only small masses must be heated.
  • a single heater in the form of an induction coil is provided, the windings are placed around the mantle surface of the cylinder.
  • a printing machine 1 in particular a label printing machine, in a row construction, with successive printing units 2, 3, 4 in the horizontal direction, has a roller feeder 6 and a roller extension 7.
  • the last printing unit 4 is followed by a stamping 8, which serves to emboss the labels.
  • the label printing machine essentially serves to machine a substrate 9 in web form.
  • the substrate 9 is unrolled in the roll feeder 6 by a substrate roll 11 and guided along a path through the printing machine 1.
  • the substrate web 9 is printed, dried, embossed and finally rolled up in a roller boom 7 on a label roll 12.
  • the printing unit 2 is constructed as a so-called flexographic printing unit and has, in addition to an inking roller 13 with chamber doctor blade 14 a printing form cylinder 16 and a counter-pressure cylinder 17.
  • a UV dryer 18 is disposed below the impression cylinder 17.
  • the printing unit 3 is also constructed as a flexographic printing unit, wherein the arrangement of the UV dryer 18 is provided laterally from the impression cylinder 17.
  • the printing unit 4 shows a flexographic printing unit with a hot air dryer 19 arranged below the impression cylinder 17.
  • the embossing unit 8 has two cooperating cylinders 21, 22, through the press nip of the substrate web 9 is passed.
  • a lower cylinder 21 serves as a counter-pressure cylinder for an upper embossing cylinder 22.
  • the embossing cylinder 22 has a cylinder body 23, which consists of a non-magnetizable material z. As aluminum, a ceramic composite material or a cubic face-centered steel is made.
  • an induction coil 24 is arranged, such that the coil winding is wound over the circumference of the cylinder.
  • the coil winding is connected to a power generator 25.
  • the embossing cylinder 22 carries a cylinder jacket 26 in the form of a sleeve which covers the induction coil 24.
  • the cylinder shell 26 is made of a non-magnetizable material.
  • a so-called “tool sleeve” 27 can be pushed laterally.
  • This consists of a sleeve which is made of a non-magnetizable material, for. As aluminum, ceramic composite or plastic.
  • the sleeve is a carrier body 27 for stamping tools 28, wherein the stamping tools of magnetizable material z.
  • B. cubic body-centered steel are made.

Landscapes

  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Rotary Presses (AREA)
  • General Induction Heating (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Description

Vorrichtung zum Erwärmen mindestens eines Werkzeuges, welches am Umfang eines rotierbaren Zylinders angeordnet ist.Device for heating at least one tool, which is arranged on the circumference of a rotatable cylinder.

Die Erfindung betrifft eine Vorrichtung zum Erwärmen mindestens eines Werkzeuges, welches am Umfang eines rotierbaren Zylinders angeordnet ist.The invention relates to a device for heating at least one tool, which is arranged on the circumference of a rotatable cylinder.

Durch die DE 4401448 B4 ist es bereits bekannt eine Induktions-Heizungs-Wickelstruktur im Inneren eines Zylinders vorzusehen, der die gesamte Manteloberfläche des Zylinders, sowie dessen Flansche erwärmt.By the DE 4401448 B4 It is already known to provide an induction heating winding structure inside a cylinder which heats the entire shell surface of the cylinder and its flanges.

Durch die DE 202008016510 U1 ist es bekannt, am Mantelumfang einer Walze verteilt mehrere Induktionsheizungen anzuordnen, um eine regionale Erwärmung von Mantelabschnitten erzielen zu können.By the DE 202008016510 U1 It is known to arrange distributed on the circumference of a roll a plurality of induction heaters in order to achieve a regional heating of shell sections can.

GB 2 276 350 A beschreibt einen drehbaren Zylinder, der zum Aufprägen von feinen Strukturen auf ein Substrat unter Verwendung einer Folie geeignet sein soll. GB 2 276 350 A describes a rotatable cylinder intended to be suitable for imparting fine structures to a substrate using a foil.

US 4,453,468 beschreibt eine Halterung für Druckköpfe in Druckmaschinen auf Grundlage von Permanentmagneten, welche ein gut wärmeleitendes Material umfasst. US 4,453,468 describes a holder for printheads in printing machines based on permanent magnets, which comprises a good heat conducting material.

WO 95/33575 A1 beschreibt eine Vorrichtung zum Einfärben von geprägten Blechen mittels einer beheizten Prägewalze. WO 95/33575 A1 describes a device for coloring embossed sheets by means of a heated embossing roll.

Der Erfindung liegt die Aufgabe zugrunde, einen Werkzeug tragenden Zylinder zu schaffen, der eine Vorrichtung zum Erwärmen des Werkzeuges aufweist.The invention has for its object to provide a tool-carrying cylinder having a device for heating the tool.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.The object is achieved by the features of claim 1.

Es ist ein besonderer Vorteil der Erfindung, dass im Wesentlichen ausschließlich die Werkzeuge erwärmt werden, wogegen die übrige Zylinderstruktur unbeheizt ist. Durch diese Maßnahme kann eine Abkühlungszeit die zum Wechseln der Werkzeuge eingehalten werden muss wesentlich verkürzt werden.It is a particular advantage of the invention that essentially only the tools are heated whereas the remaining cylinder structure is unheated. By this measure, a cooling time to be met to change the tools must be significantly shortened.

Auch die Aufwärmzeit für die Werkzeuge wird minimiert, da nur geringe Massen erwärmt werden müssen.The warm-up time for the tools is minimized, since only small masses must be heated.

In vorteilhafter Ausgestaltung ist eine einzige Heizung in Form einer Induktionsspule vorgesehen, deren Wickelungen um die Manteloberfläche des Zylinders gelegt sind.In an advantageous embodiment, a single heater in the form of an induction coil is provided, the windings are placed around the mantle surface of the cylinder.

Ein weiterer Vorteil ergibt sich durch den leichten Aufbau des Zylinderkörpers bzw. eines auf dem Zylinderkörper angeordneten hülsenförmigen Trägerkörper, einem sogenannten "sleeve" aus einem nicht magnetisierbaren Material, wie z. B. Aluminium. Diese Maßnahme führt zu einer erheblichen Gewichtsreduzierung.Another advantage results from the lightweight construction of the cylinder body or arranged on the cylinder body sleeve-shaped carrier body, a so-called "sleeve" of a non-magnetizable material, such as. As aluminum. This measure leads to a significant weight reduction.

Weitere Vorteile sind in den Unteransprüchen beschrieben.Further advantages are described in the subclaims.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im Folgenden beschrieben. Es zeigen

Figur 1
eine Rollenrotationsdruckmaschine im Schnitt mit Prägewerk in schematischer Darstellung,
Figur 2
einen Schnitt durch den erfindungsgemäßen Werkzeug tragenden Zylinder des Prägewerkes in schematischer Darstellung.
An embodiment of the invention is illustrated in the drawings and will be described below. Show it
FIG. 1
a web-fed rotary printing press in section with embossing machine in a schematic representation,
FIG. 2
a section through the inventive tool-carrying cylinder of the embossing in a schematic representation.

Eine Druckmaschine 1, insbesondere eine Etikettendruckmaschine, in Reihenbauweise, mit in horizontaler Richtung aufeinanderfolgenden Druckwerken 2, 3, 4, weist einen Rollenanleger 6 und einen Rollenausleger 7 auf. Dem letzten Druckwerk 4 nachgeordnet ist ein Prägewerk 8, welches dem Prägen der Etiketten dient. Die Etikettendruckmaschine dient im Wesentlichen der Bearbeitung eines Substrats 9 in Bahnform. Das Substrat 9 wird im Rollenanleger 6 von einer Substratrolle 11 abgerollt und entlang eines Weges durch die Druckmaschine 1 geführt. Hierbei wird die Substratbahn 9 bedruckt, getrocknet, geprägt und letztlich im Rollenausleger 7 auf eine Etikettenrolle 12 aufgerollt. Das Druckwerk 2 ist als sogenanntes Flexodruckwerk aufgebaut und weist neben einer Farbauftragswalze 13 mit Kammerrakel 14 einen Druckformzylinder 16 und einen Gegendruckzylinder 17 auf.A printing machine 1, in particular a label printing machine, in a row construction, with successive printing units 2, 3, 4 in the horizontal direction, has a roller feeder 6 and a roller extension 7. The last printing unit 4 is followed by a stamping 8, which serves to emboss the labels. The label printing machine essentially serves to machine a substrate 9 in web form. The substrate 9 is unrolled in the roll feeder 6 by a substrate roll 11 and guided along a path through the printing machine 1. Here, the substrate web 9 is printed, dried, embossed and finally rolled up in a roller boom 7 on a label roll 12. The printing unit 2 is constructed as a so-called flexographic printing unit and has, in addition to an inking roller 13 with chamber doctor blade 14 a printing form cylinder 16 and a counter-pressure cylinder 17.

Ein UV-Trockner 18 ist unterhalb des Gegendruckzylinders 17 angeordnet.A UV dryer 18 is disposed below the impression cylinder 17.

Das Druckwerk 3 ist ebenfalls als Flexodruckwerk aufgebaut, wobei die Anordnung des UV-Trockners 18 seitlich vom Gegendruckzylinder 17 vorgesehen ist.The printing unit 3 is also constructed as a flexographic printing unit, wherein the arrangement of the UV dryer 18 is provided laterally from the impression cylinder 17.

Das Druckwerk 4 zeigt ein Flexodruckwerk mit einem unterhalb des Gegendruckzylinders 17 angeordneten Heißlufttrockners 19.The printing unit 4 shows a flexographic printing unit with a hot air dryer 19 arranged below the impression cylinder 17.

Das Prägewerk 8 weist zwei zusammenwirkende Zylinder 21, 22 auf, durch deren Druckspalt die Substratbahn 9 hindurchgeführt ist. Ein unterer Zylinder 21 dient als Gegendruckzylinder für einen oberen Prägezylinder 22. Der Prägezylinder 22 weist einen Zylinderkörper 23 auf, welcher aus einem nicht magnetisierbaren Material z. B. Aluminium, einem Keramikverbundwerkstoff oder einem kubisch flächenzentrierten Stahl gefertigt ist.The embossing unit 8 has two cooperating cylinders 21, 22, through the press nip of the substrate web 9 is passed. A lower cylinder 21 serves as a counter-pressure cylinder for an upper embossing cylinder 22. The embossing cylinder 22 has a cylinder body 23, which consists of a non-magnetizable material z. As aluminum, a ceramic composite material or a cubic face-centered steel is made.

Auf dem Zylinderumfang ist eine Induktionsspule 24 angeordnet, derart, dass die Spulenwicklung über den Zylinderumfang gewickelt ist. Die Spulenwicklung ist mit einem Stromerzeuger 25 verbunden.On the cylinder circumference, an induction coil 24 is arranged, such that the coil winding is wound over the circumference of the cylinder. The coil winding is connected to a power generator 25.

Der Prägezylinder 22 trägt einen Zylindermantel 26 in Form einer Hülse, welche die Induktionsspule 24 abdeckt.The embossing cylinder 22 carries a cylinder jacket 26 in the form of a sleeve which covers the induction coil 24.

Der Zylindermantel 26 ist aus einem nicht magnetisierbaren Material hergestellt.The cylinder shell 26 is made of a non-magnetizable material.

Auf dem Zylindermantel 26 ist ein sogenannter "Werkzeugsleeve" 27 seitlich aufschiebbar. Dieser besteht aus einer Hülse, die aus einem nicht magnetisierbarem Material hergestellt ist, z. B. Aluminium, Keramikverbundwerkstoff oder Kunststoff.On the cylinder jacket 26, a so-called "tool sleeve" 27 can be pushed laterally. This consists of a sleeve which is made of a non-magnetizable material, for. As aluminum, ceramic composite or plastic.

Die Hülse ist ein Trägerkörper 27 für Prägewerkzeuge 28, wobei die Prägewerkzeuge aus magnetisierbarem Material z. B. kubisch raumzentriertem Stahl hergestellt sind.The sleeve is a carrier body 27 for stamping tools 28, wherein the stamping tools of magnetizable material z. B. cubic body-centered steel are made.

Bei einer Strombeaufschlagung der Induktionsspule 24 wird in bekannter Weise ein Magnetfeld erzeugt, welches zur Erwärmung der im Magnetfeld befindlichen magnetisierbaren Werkstoffe führt. Erfindungsgemäß sind das die Prägewerkzeuge 28. Sämtliche weiteren Zylinderbauteile sind aus nicht magnetisierbaren Materialien hergestellt und werden daher nicht durch das Magnetfeld erwärmt.When a current is applied to the induction coil 24, a magnetic field is generated in a known manner, which leads to the heating of the magnetizable materials in the magnetic field. According to the invention, these are the embossing tools 28. All other cylinder components are made of non-magnetizable materials and are therefore not heated by the magnetic field.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Druckmaschine (Etikettenrollendruckmaschine)Printing machine (label roll printing machine)
22
Druckwerkprinting unit
33
Druckwerkprinting unit
44
Druckwerkprinting unit
55
./../.
66
Rollenanlegerroll feeder
77
Rollenauslegerroller extension
88th
Prägewerkstamping
99
Substratbahnsubstrate web
1010
./../.
1111
Substratrollesubstrate roll
1212
Etikettenrollelabel roll
1313
FarbauftragswalzeInking roller
1414
Kammerrakelchambered doctor blade
1515
./../.
1616
DruckformzylinderPlate cylinder
1717
GegendruckzylinderImpression cylinder
1818
UV-TrocknerUV dryer
1919
HeißlufttrocknerHot air dryer
2020
./../.
2121
Zylinder (Gegendruckzylinder)Cylinder (impression cylinder)
2222
Prägezylinderembossing cylinders
2323
Zylinderkörper (22)Cylinder body (22)
2424
Induktionsspuleinduction coil
2525
Stromerzeugerpower generator
2626
Zylindermantel (22)Cylinder jacket (22)
2727
Werkzeugsleeve (Trägerkörper)Tool sleeve (carrier body)
2828
Prägewerkzeugembossing tool

Claims (4)

  1. Device for heating at least one tool (28) disposed on the circumference of a rotatable cylinder (22) wherein an induction coil (24) is provided to create a magnetic field,
    characterized in that
    the tool (28) is disposed on a sleeve-shaped carrier body (27) that is slidable onto a cylinder jacket (26) of the cylinder (22),
    the tool (28) is made of a magnetisable material,
    the cylinder jacket (26) and the sleeve-shaped carrier body (27) are made of a non-magnetisable material, and
    a cylinder body (23) of the cylinder (22) is made of a non-magnetisable material, wherein the magnetic field for heating the tool (28) is generatable by applying power to the induction coil (24).
  2. Device according to claim 1,
    characterized in that
    the cylinder (22) is an embossing cylinder for embossing a web-shaped or sheet-shaped printing material, in particular made of paper and/or plastic.
  3. Device according to claim 1,
    characterized in that
    the turns of the induction coil (24) are wound around the circumference of the cylinder body (23).
  4. Device according to claim 3,
    characterized in that
    the turns of the induction coil (24) are covered by the cylinder jacket (26).
EP12177050.7A 2011-07-27 2012-07-19 Inductively heated cylinder having an embossing tool Active EP2551114B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011108665A DE102011108665A1 (en) 2011-07-27 2011-07-27 Induction heated cylinder

Publications (2)

Publication Number Publication Date
EP2551114A1 EP2551114A1 (en) 2013-01-30
EP2551114B1 true EP2551114B1 (en) 2019-05-22

Family

ID=46551403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12177050.7A Active EP2551114B1 (en) 2011-07-27 2012-07-19 Inductively heated cylinder having an embossing tool

Country Status (5)

Country Link
US (1) US9038533B2 (en)
EP (1) EP2551114B1 (en)
CN (1) CN102896881B (en)
DE (1) DE102011108665A1 (en)
DK (1) DK2551114T3 (en)

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CN104417039A (en) * 2013-09-11 2015-03-18 南通希罗精密机械科技有限公司 Electromagnetic induction digital control heating device
EP3046151B1 (en) * 2015-01-16 2019-04-03 Somont GmbH Method and apparatus of fabricating an interconnector assembly
US10045082B2 (en) * 2015-07-02 2018-08-07 The Nielsen Company (Us), Llc Methods and apparatus to correct errors in audience measurements for media accessed using over-the-top devices
CN107794508A (en) * 2017-11-15 2018-03-13 中山市创科科研技术服务有限公司 A kind of optical coating device base plate carrying mechanism
US11806986B2 (en) * 2018-04-05 2023-11-07 Essity Hygiene And Health Aktiebolag Flexographic printing device and a method of simultaneously printing at least two material webs having different thicknesses
IT201800009548A1 (en) * 2018-10-17 2020-04-17 Bobst Firenze Srl ROTARY HOT FORGING MACHINE

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Also Published As

Publication number Publication date
US20130025478A1 (en) 2013-01-31
DK2551114T3 (en) 2019-07-15
DE102011108665A1 (en) 2013-01-31
US9038533B2 (en) 2015-05-26
EP2551114A1 (en) 2013-01-30
CN102896881A (en) 2013-01-30
CN102896881B (en) 2016-08-24

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