EP0835181B1 - Embossing roller for an embossing device - Google Patents

Embossing roller for an embossing device Download PDF

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Publication number
EP0835181B1
EP0835181B1 EP19960909045 EP96909045A EP0835181B1 EP 0835181 B1 EP0835181 B1 EP 0835181B1 EP 19960909045 EP19960909045 EP 19960909045 EP 96909045 A EP96909045 A EP 96909045A EP 0835181 B1 EP0835181 B1 EP 0835181B1
Authority
EP
European Patent Office
Prior art keywords
embossing
roller
die ring
stamping
ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19960909045
Other languages
German (de)
French (fr)
Other versions
EP0835181A1 (en
Inventor
Reinwald Mitsam
Johannes Georg Schaede
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.)
Kurz Leonhard Stiftung and Co KG
Koenig and Bauer AG
Original Assignee
Kurz Leonhard Stiftung and Co KG
Koenig and Bauer 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
Priority to DE1995123441 priority Critical patent/DE19523441A1/en
Priority to DE19523441 priority
Application filed by Kurz Leonhard Stiftung and Co KG, Koenig and Bauer AG filed Critical Kurz Leonhard Stiftung and Co KG
Priority to PCT/DE1996/000649 priority patent/WO1997001442A1/en
Publication of EP0835181A1 publication Critical patent/EP0835181A1/en
Application granted granted Critical
Publication of EP0835181B1 publication Critical patent/EP0835181B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44BMACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02Dies; Accessories
    • B44B5/026Dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44BMACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/0004Machines 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
    • B44B5/0009Rotating embossing tools

Abstract

A stamping roller (10) for a stamping device has a central supporting roller (12) and stamping dies (24) mutually spaced apart around the circumference of the central supporting roller (12). At least one stamping ring with two marginal sections spaced apart in the axial direction that support at least one associated pressing roller (28) with spacing rings (26) in a defined position is secured to the supporting roller. The size and material of the stamping ring (20) are adapted to the supporting roller (12) so that each stamping ring (20) may be adjusted on the supporting roller (12) at room temperature and fixed by thermal expansion on the supporting roller (12) at the increased stamping or operation temperature of the stamping roller (10). Each stamping ring (20) has a heat insulating part arranged between both lateral spacing rings (26) and between adjacent stamping dies (24). Lateral caps (34) adjacent to each die (20) are provided.

Description

The invention relates to an embossing device intended embossing roller, which has a central carrier roller and Embossing dies spaced apart in the circumferential direction has, at least one on the carrier roller Stamp ring is attached, both of which are axially apart spaced edge sections to the defined system with at least one associated pressure roller Spacer rings are formed, and the at least one Stamp ring between the two associated spacer rings is formed with the dies.

An embossing roller of the type mentioned above is from CH-A 322 275 and known from US-A 3,217,637. With the from the first known CH-A 322 275 known embossing roller act with this several cylinders different Printing process together. The contact pressure of the different cylinders on the embossing roller, i.e. on the single impression cylinder, be different. At the out of the aforementioned embossing roller known from US Pat. No. 3,217,637 are the Embossing stamps only along a portion of the circumference of the Embossing roller provided.

An embossing roller is known from WO 94/13487 A1, in which a separate embossing roller is required for different substrates to be embossed in accordance with the division of the benefits. This means that such a known embossing roller is only suitable for embossing large embossing runs, because such embossing rollers are expensive and, as it were, have no flexibility. In addition, there may be large dimensions of such a known embossing roller due to minimal deviations from the ideal cylindrical shape, such as
For example, due to the temperature, there may be significant quality problems in the embossing process, i.e. the respective decor transfer from the embossing film to the substrate, because the pressure rollers that press against the embossing roller only compensate for the above-mentioned deviations from the ideal cylindrical shape of the embossing roller or compensate for tolerances is possible.

From DE-PS 233 239 is one for an embossing device intended embossing roller known that a central Carrier roller and spaced apart in the circumferential direction Has embossing stamp, with a number on the carrier roller Stamp rings are attached closely adjacent. The Stamp rings are between two side spacer rings arranged. These two side spacer rings are used not there for the defined creation of an associated one Pinch roller but for pushing through and setting Attachment rods to the closely spaced To hold stamp rings together.

DE 27 53 296 C2 describes a bearer ring arrangement to achieve a defined center distance between two Printing unit cylinders of a rotary printing unit with two each on one end of the two printing unit cylinders attached bearer rings, with the printing unit cylinders to run around and under tension and constant mutual contact can roll, and at least one with its central bore attached to the axis of the associated printing unit cylinder is. To avoid wear of the bearer ring, there proposed that at the on the axis of the Printing unit cylinder attached the bearer ring Support surface convex on the axis of the printing unit cylinder and the bearing surface in the central bore of the The bearer is concavely curved.

From DE 85 18 933 U1 is an embossing roller with a heated roller core and a supported on it its circumferential surface engraved roll shell known, wherein the roller core at least in the area of its support the roller shell made of a material with a larger Coefficient of thermal expansion exists as the roll shell.

The invention has for its object an embossing roller of the type mentioned at the beginning, in which a variable arrangement of the dies as required is possible, and at which tolerances or possible Deviations from the ideal cylinder shape of the embossing roller and their concentricity can be compensated with simple means are.

This task is the beginning of an embossing roller mentioned type according to the invention solved by the / everyone Stamp ring on the carrier roller dimension and is materially adjusted so that the / everyone Stamp ring at room temperature on the carrier roller is adjustable and with increased embossing or Operating temperature of the embossing roller the thermal expansion the / each stamp ring fixed to the carrier roller that the / each stamp ring between the two lateral ones Spacer rings and between adjacent dies Has heat insulating part, and that to the / each stamp ring Connect covers on the side.

The dies are expediently in The circumferential direction of the stamp ring is provided equidistant. A stamp ring can be attached to the central carrier roller his; but are preferably on the central carrier roller several stamp rings attached. Because of that Embossing stamps are formed on stamp rings, it is possible, a corresponding on the central embossing roller Arrange the number of stamp rings as required. Here is the axial distance between the adjacent stamp rings easily adjustable as required. Through the Selection of a suitable stamp ring is for example also the division of the dies in the circumferential direction of the Embossing roller can be selected as required. Because the respective pressure roller defined on the two side Spacer rings is present, between which the dies are provided, there is the advantage that tolerances or deviations of the embossing roller from the exact Cylindrical shape and thus deviations from the exact concentricity the embossing roller can be compensated in a simple manner. Of course it is also possible to appropriate stamp ring not just a pressure roller but a number of pressure rollers - similar to one Formation of an embossing device, as in DE 32 10 551 C2 is disclosed.

At normal room temperature is between each Stamp ring and the central carrier roller a sliding or Given sliding seat tolerance, so that the respective Stamp ring in the axial direction of the central carrier roller is adjustable as desired. The material selection for the Stamp ring and the central carrier roller is like this met that the central carrier roller at increased operating or embossing temperature of the embossing roller expands more than the / each stamp ring, so that at the embossing or operating temperature of the embossing roller between the central carrier roller and the / each stamp ring Press fit results in what the / each stamp ring on the central carrier roller is fixed.

The / each stamp ring is expediently provided with a Provide heating device. This heater can it is an electric heater. With Using such a heater is an accurate one Regulation of the temperature on the dies of each Stamp ring and in particular a precise regulation of the Temperature on the front or stamp surfaces of the individual Embossing stamp possible. For precise temperature control of the The individual stamp of the / each stamp ring is the appropriate stamp ring with Temperature measurement sensors provided with a Control device are connected, which to the said Use a suitable heating device.

In that, according to the invention, the / each stamp ring between the two side spacer rings and between the neighboring stamps has a heat insulating part, there is a thermal separation between the Embossing stamps or their front or embossing surfaces. This Heat insulating parts expediently have a Outer surface on that of the outer surface of the embossing roller corresponds. In this way, there is the advantage that the substrate to be embossed and on the substrate simultaneously between the embossing roller and the at least one associated pressure roller introduced stamping foil in the There are no gaps between adjacent dies unwanted wrinkles that affect the quality of the embossing can arise. The heat insulation parts mentioned such insulating properties that the Surface temperature of the heat insulating parts no effect, d. H. has no influence on the stamping foil, so that no undesirable due to the heat insulating parts Preactivation of the adhesive layer and / or stretching of the Carried the stamping foil.

While with a smooth embossing roller like her for example in the above-mentioned DE 32 10 551 C2 is disclosed, the pinch rollers continuously and roll evenly on the cylinder jacket is one Embossing roller with spaced apart, individual Stamping the rolling process accordingly discontinuous. That means the pinch rollers can be used the necessary to carry out the embossing process Press in the gaps between neighboring ones Embossing stamps are moved into it. The between heat-insulating parts provided adjacent stamps are not suitable for the necessary counterforces to raise; They give slightly due to the material after. Especially in the case of a so-called delay of Embossing roller, which is often not due to the temperature can be reliably excluded, can be serious Problems arise. This is where the present invention provides with simple means reliable remedy that on the side next to the spaced stamps the two spacer rings are provided against which the at least one associated pressure roller of the Embossing device presses. For sensitive to be stamped Substrates and / or at higher line pressures between the Embossing roller and the at least one pressure roller can Spacer rings on the embossed substrate clearly Leave impressions, which then the overprintability can restrict. To remedy this shortage, you can the two in the embossing roller according to the invention Spacer rings of the / each stamp ring with chamfer surfaces be trained. By training each Pair of spacer rings with such chamfer surfaces there is the advantage that the overprintability is not is restricted.

The covers can in the embossing roller according to the invention each consist of a metal sheet. They don't serve only a suitable design of the embossing cylinder, but also to the outside of the central carrier roller heat insulate. The carrier roller is namely expediently also with a heating device Mistake. This heater can, for example, from commercially available electric heating cartridges.

It has proven to be useful if the embossing roller according to the invention, d. H. from the outer shell of her central carrier roller at least one elongated Strip element protrudes that in the axial direction of Carrier roller oriented and laterally next to the at least a stamp ring with suction openings is formed. With Help of the suction openings that have suitable Hose lines with a vacuum source fluid are connectable, it is reliably possible to get one to fix the embossing substrate on the embossing roller. In which Minting a so-called endless substrate Feed movement of the substrate in particular by a corresponding clamping between the spacer rings of the / each stamp ring and the associated pressure rollers guaranteed. When stamping sheet, i.e. H. The substrate transport becomes arc-shaped substrates especially of the elongated ledge elements with their Suction openings taken over. With the help of the above Suction openings are expediently the leaf or Defined arc start adopted. The Sheets or sheets, for example, from one of the Embossing station upstream contact roller on the at least pushed a last element. About this feed movement to limit precisely defined, it is preferred if at an embossing roller of the last-mentioned type, at least a strip element has stop ribs on the side are provided in addition to the at least one stamp ring and project radially beyond the at least one stamp ring. On these stop ribs come the one to be stamped Bow with its leading edge precisely defined to the system and is formed by the elongated last element Suction openings on the last element and thus on the Embossing roller sucked in. After performing the The corresponding embossing process is the negative pressure canceled. Then can through the suction openings Compressed air is blown out, causing the embossed Substrate sheets or sheets from the stop ribs or from the embossing roller repelled and for example by Conveyor belts are taken over.

The embossing roller according to the invention consequently has a number of advantages, such as:

  • time-saving interchangeability of a complete stamp ring with another stamp ring of the desired stamp shape and division,
  • Embossing roller diameter and circumference variable within certain limits,
  • rapid reaching of a stable operating temperature by separate heating of the carrier roller and the at least one stamp ring,
  • reliable and secure attachment and fixation of the at least one stamp ring on the central carrier roller as a result of the press fit at the increased operating temperature of the embossing roller,
  • reliable, safe substrate transport both with endless substrate material and with sheet or sheet-shaped substrate material, because the clamping takes place directly to the side next to the individual stamp surfaces or stamps,
  • no problems due to warping of the embossing roller,
  • problem-free embossing of substrates of different thicknesses, because the associated spacer rings are provided right next to the individual embossing dies, so that defined conditions are not only given at the eye edges of the embossing roller, but also directly to the side of the embossing dies, and
  • Avoidance of undesired changes in the print image when the embossing temperature and consequently the embossing roller diameter have changed.
  • There are further advantages of the embossing roller according to the invention in that the temperature on the front or stamp surfaces the die is very precise and easy to adjust, and dag between the stamping surfaces mentioned and the non-defining spaces between the Stamping through thermal separation Heat insulation parts is easy to implement. The Heat insulating parts are to be given the cylindrical shape around the Length of the film to be peeled off according to the Keep arc length because without such heat insulation parts follow the polygon shape from stamp to stamp would. This would reduce the length of the film the division of the stamp spacing on the cylinder or Imprints on the paper sheet to be embossed or the like. That would the controllability is severely impaired. Through the Heat insulation parts will have the last mentioned shortcomings easily eliminated.

    Further details, features and advantages result from the following description of an embodiment of the embossing roller according to the invention shown in the drawing. Show it:

  • FIG. 1 largely cut open an embodiment of the embossing roller with four stamp rings,
  • FIG. 2 shows a cross section through the embossing roller according to FIG. 1,
  • FIG. 3 shows a side view of a stamp ring of the embossing roller according to FIG. 1,
  • 4 shows an angled section through the stamp ring according to FIG. 3, and
  • FIG. 5 shows a section of a stamp ring and an associated pressure roller in a strongly distorted, not to scale representation.
  • Figure 1 shows an embodiment of the for an embossing device provided embossing roller 10 with a central carrier roller 12, which is designed as a tubular sleeve. On each of the two axial ends of the central carrier roller 12 is a flange 14, 16 attached. The flange 14 is the drive-side flange. About this is the embossing roller 10 driven. This drive takes place via a non-rotatable divisible coupling, which is not in Figure 1 is drawn. Through such training with divisible Coupling has the advantage that the embossing roller 10th time-saving interchangeability.

    At the two axial ends of the embossing roller 10 and at the Flanges 14, 16 are spacer rings or bearer rings 18 attached, which determine the diameter of the embossing roller 10.

    These spacer or bearer rings 18 are used for support a (not shown) pinch roller carrier of Embossing device.

    There are four on the tubular central carrier roller 12 Stamp rings 20 attached, one of which is shown in the figures 3 and 4 in a side view and shown in section is. The stamp rings 20 are in the axial direction spaced from one another and to the central carrier roller 12 adapted in terms of dimensions and materials so that each stamp ring 20 at room temperature on the central one Carrier roller 12 is adjustable and displaceable and at increased embossing or operating temperature of the embossing roller 10 the thermal expansion of the respective stamp ring 20 on the central carrier roller 12 fixed. The central carrier roller So 12 is made of a material that is larger Has thermal expansion coefficient as the material for the Stamp rings 20.

    Each stamp ring 20 is provided with a heating device 22 Mistake. These heaters are expediently to electrical resistance heaters. The Power is measured so that the entire process heat can be applied. Each of the stamp rings 20 has its own electrical control circuit so that the individual stamp rings are not only interchangeable, but also independently controllable as desired are.

    As can be seen from Figures 1 and 3, everyone is Stamp ring 20 with a series of stamps 24 formed, which are spaced apart. Laterally In addition to the stamping dies 24, the / each stamping ring 20 is also included Spacer rings 26 are formed, on each of which associated pressure roller 28 (see FIG. 5). To everybody the two spacer rings 26 are laterally integrally included Side section 30. Each of the two side sections 30 has a circumferential annular groove 32 trained to lay down an associated side cover 34 is provided.

    Between adjacent dies 24 and the two lateral spacer rings 26 is one Heat insulating part 36 arranged. In Figure 3 is one of these Heat insulating parts 36 indicated by hatching. The Heat insulating parts 36 are for example between the screwed two spacer rings 26, what with Reference numbers 38 is clarified.

    As can be seen from Figure 5, the two are Spacer rings 26 of the corresponding stamp ring 20 with Chamfer surfaces 40 are formed.

    From the outer jacket 42 of the central carrier roller 12 Embossing roller 10 are - as can be seen from Figure 2 - four elongated strip elements 44 away, the side next to the stamp rings 20 are formed with suction openings 46, as Figure 1 shows. The elongated last elements 44 also have stop ribs 48 (see FIG. 2), the are provided laterally next to the stamp rings 20 and project radially beyond the stamp rings 20. The Stop ribs 48 are used to precisely define the respective leading edge of a sheet or arcuate substrate.

    Claims (5)

    1. Embossing roller (10) provided for an embossing device, having a central carrier roll (12) and embossing dies (24) spaced apart from one another in the circumferential direction, there being fixed to the carrier roll (12) at least one die ring (20), whose two edge portions, spaced apart from each other axially, are formed with spacer rings (26) for defined contact with at least one associated pressure roller (28), and the at least one die ring (20) being formed with the embossing dies (24) between the two spacer rings (26), characterized in that the dimensions and material of the/each die ring (20) are matched to the carrier roll (12) in such a way that the/each die ring (20) is adjustable on the carrier roll (12) when at room temperature and, at an elevated embossing or operating temperature of the embossing roller (10), the thermal expansion fixes the/each die ring (20) to the carrier roll (12), in that the/each die ring (20) has a heat-insulating part (36) between the two lateral spacer rings (26) and between adjacent embossing dies (24), and in that covers (34) adjoin the/each die ring (20) at the sides.
    2. Embossing roller according to Claim 1, characterized in that the/each die ring (20) is provided with a heating device (22).
    3. Embossing roller according to Claim 1 or 2, characterized in that the two spacer rings (26) of the/each die ring (20) are formed with chamfering surfaces (40).
    4. Embossing roller according to one of the preceding claims, characterized in that from the outer cover (42) of the carrier roll (12) there projects at least one elongated strip element (44), which is oriented in the axial direction of the carrier roll (12) and is formed with suction openings (46) laterally alongside the at least one die ring (20).
    5. Embossing roller according to Claim 4, characterized in that the at least one strip element (44) has stop ribs (48), which are provided laterally alongside the at least one die ring (20) and project radially beyond the at least one die ring (20).
    EP19960909045 1995-06-28 1996-04-06 Embossing roller for an embossing device Expired - Lifetime EP0835181B1 (en)

    Priority Applications (3)

    Application Number Priority Date Filing Date Title
    DE1995123441 DE19523441A1 (en) 1995-06-28 1995-06-28 Embossing roller for an embossing device
    DE19523441 1995-06-28
    PCT/DE1996/000649 WO1997001442A1 (en) 1995-06-28 1996-04-06 Stamping roller for a stamping device

    Publications (2)

    Publication Number Publication Date
    EP0835181A1 EP0835181A1 (en) 1998-04-15
    EP0835181B1 true EP0835181B1 (en) 1999-12-22

    Family

    ID=7765428

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP19960909045 Expired - Lifetime EP0835181B1 (en) 1995-06-28 1996-04-06 Embossing roller for an embossing device

    Country Status (16)

    Country Link
    US (1) US5937759A (en)
    EP (1) EP0835181B1 (en)
    JP (1) JP3095081B2 (en)
    CN (1) CN1077504C (en)
    AT (1) AT187927T (en)
    AU (1) AU693680B2 (en)
    BG (1) BG62799B1 (en)
    BR (1) BR9608948A (en)
    CA (1) CA2224815C (en)
    CZ (1) CZ285936B6 (en)
    DE (3) DE19523441A1 (en)
    ES (1) ES2140836T3 (en)
    NO (1) NO310336B1 (en)
    NZ (1) NZ304826A (en)
    TW (1) TW330858B (en)
    WO (1) WO1997001442A1 (en)

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    US6694872B1 (en) 1999-06-18 2004-02-24 Holographic Label Converting, Inc. In-line microembossing, laminating, printing, and diecutting
    US6694873B1 (en) * 1999-06-18 2004-02-24 Holographic Label Converting, Inc. Microembosser for faster production of holographic labels
    TWI253389B (en) * 2003-07-25 2006-04-21 Bobst Sa Method for tightening an embossing plate ring on a chuck
    EP1588865A1 (en) * 2004-04-22 2005-10-26 Kba-Giori S.A. Embossing cylinder
    EP1837202B1 (en) 2006-03-21 2013-02-27 Hueck Folien Ges.m.b.H. Method for manufacturing a seamless embossing cylinder
    EP1961578A1 (en) 2007-02-26 2008-08-27 Kba-Giori S.A. Method and installation for applying foil material onto successive sheets
    EP2100736A1 (en) 2008-03-14 2009-09-16 Kba-Giori S.A. Method and installation for applying foil material onto successive sheets
    DE102008019720A1 (en) * 2008-04-18 2009-10-22 Leonhard Kurz Stiftung & Co. Kg Heated embossing roll
    EP2141027A1 (en) 2008-07-03 2010-01-06 Kba-Giori S.A. Method and installation for applying foil material onto successive sheets
    EP2275259A1 (en) * 2009-07-14 2011-01-19 Pantec GS Systems AG Press or embossing unit and work cylinder therefor
    CN102837496B (en) * 2012-09-24 2015-05-27 武汉虹之彩包装印刷有限公司 Device for carrying out hot stamping for multiple times on one impression roller
    US10486459B2 (en) 2013-01-22 2019-11-26 Unilin, Bvba Method and device for manufacturing products having a surface provided with embossments, and products obtained thereby
    EP3489016A1 (en) * 2014-07-31 2019-05-29 Unilin, BVBA Method for manufacturing a floor covering product
    CN104191835B (en) * 2014-08-22 2017-05-03 上海应用技术学院 Mechanical production process for series large high-velocity roller

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    FR2726786B1 (en) * 1994-11-14 1997-02-07

    Also Published As

    Publication number Publication date
    CN1189128A (en) 1998-07-29
    WO1997001442A1 (en) 1997-01-16
    DE19680498D2 (en) 1998-07-23
    CZ285936B6 (en) 1999-11-17
    EP0835181A1 (en) 1998-04-15
    CN1077504C (en) 2002-01-09
    AT187927T (en) 2000-01-15
    NO310336B1 (en) 2001-06-25
    NO975825L (en) 1997-12-16
    NO975825D0 (en) 1997-12-11
    BG62799B1 (en) 2000-08-31
    BR9608948A (en) 1999-03-02
    ES2140836T3 (en) 2000-03-01
    JPH11509144A (en) 1999-08-17
    CZ415497A3 (en) 1998-08-12
    CA2224815A1 (en) 1997-01-16
    TW330858B (en) 1998-05-01
    DE19523441A1 (en) 1997-01-02
    BG102128A (en) 1998-07-31
    DE59603987D1 (en) 2000-01-27
    AU693680B2 (en) 1998-07-02
    US5937759A (en) 1999-08-17
    KR19990028650A (en) 1999-04-15
    NZ304826A (en) 1999-02-25
    CA2224815C (en) 2004-09-14
    JP3095081B2 (en) 2000-10-03
    AU5269996A (en) 1997-01-30

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