Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F27/00—Devices for attaching printing elements or formes to supports
  • B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
• • 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

Definitions

• the invention relates to a Regery l i nder according to the preamble of claim 1.
• the invention has for its object to provide an embossing cylinder.
• dies can be exchanged individually. This option makes it possible to avoid replacing an expensive stamping ring with a large number of fixed stamps. It is particularly advantageous that the dies can be individually adjusted. So that the embossing stamp individually on occurring distortion of the material to be embossed, for. B. the paper sheet can be adjusted.
• This setting possibility of the embossing stamp is of particular advantage in the case of hot stamping cylinders, with which patterns of a hot stamping foil are applied to a sheet of paper. With these paper sheets, the risk of paper warping due to high mechanical pressure and simultaneous exposure to heat is particularly great.
• a dovetail-like guidance of the embossing stamp enables easy adjustment or Exchange and is easy and inexpensive to manufacture.
• Fig. 1 is a schematic side view of the embossing cylinder
• FIG. 2 shows a schematic plan view of a section of the embossing cylinder
• Fig. 3 shows a schematic section through an embossing stamp of an embossing cylinder.
• An embossing cylinder 1 in particular a hot embossing cylinder 1 for the rotary hot embossing of patterns from a film onto a sheet of paper or a paper web in a foil embossing machine is provided with at least one retaining ring 2 for receiving embossing dies 3. Seen in the axial direction of the hot stamping cylinder 1, a plurality of these retaining rings 2 can be arranged next to one another on the hot stamping cylinder 1.
• the retaining ring 2 has a horizontal H profile running in cross section in the circumferential direction of the hot stamping cylinder 1.
• U-shaped groove 6 of the retaining ring 2 which faces a lateral surface 4 of the hot stamping cylinder 1, electrically heated heating elements 7 are attached.
• An outwardly facing U-shaped groove 8 of the retaining ring 2 is delimited by two parallel opposite side walls 9, 11 and a base area 12.
• This bore 13 continues in a threaded bore 14.
• a threaded screw 16 is screwed into the threaded bore 14.
• the threaded screws 16 in the left side wall 9 each press directly onto a first end of a pressure piece 17, e.g. B. a cylindrical pin 17.
• a pressure piece 18 In the right side wall 11 is between the threaded screw 16 and a pressure piece 18, z. B. a cylinder pin 18 a compression spring 19, for. B. in the form of a package of Te l Ierfedern arranged.
• An in the U-shaped groove 8 protruding end of the cylindrical pin 17, 1 ⁇ is wedge-shaped, z. B. with an oblique provided clamping surface 21.
• This clamping surface 21 closes with a longitudinal axis 22 of the Zy 11 nderst1 ftes 17, 1 ⁇ an angle alpha, z. B. alpha «45 °, a.
• this clamping surface 21 instead of this clamping surface 21 thus formed, other shapes are also possible, such as, for. B. a conical end of the cylindrical pin 17, 1 ⁇ .
• At least one stamp 3 is arranged in the U-shaped groove ⁇ .
• the height h3 of the die 3 is greater than the depth t ⁇ of the U-shaped groove ⁇ and the width b3 of the die is smaller than the width b ⁇ of the U-shaped groove ⁇ in the exemplary embodiment. But it is also possible that the height h3 and the depth t ⁇ are the same.
• the embossing die 3 is provided on its radially outward-facing surface 23 with one or more raised protruding surfaces 24. This transmission surface 24 is designed as an equilateral pentagon in the present example.
• a base surface 31 of the die 3 lies on the base surface 12 of the U-shaped groove ⁇ . This base area 31 is on the curvature of the base area 12 adapted to the U-shaped groove ⁇ of the die 3 and therefore slightly curved. Due to the arrangement of the two axially symmetrically arranged clamping surfaces 28, 29 and the base surface 31, a cross section of the embossing die 3 is approximately black in the lower region.
• the stamping die 3 thus has a dovetail-like guide 32 which is curved in accordance with the curvature of the cold ring 2.
• four pressure pieces 17, 18 are arranged, which cooperate with the clamping surfaces 28, 29 of this dovetail-like guide 32.
• the two pressure pieces 1 ⁇ arranged without spring in the left side wall 9 act as adjustable stops.
• a bore 33 is made in the base 12 of the U-shaped groove 8, into which a pin serving as a stop can be inserted. It is also possible to provide the retaining ring with a number scale in the circumferential direction.
• the two right threaded screws 16 loosened until the compression springs 19 are relaxed.
• the stamp 3 can now be moved in the circumferential direction into the desired position.
• the two threaded screws 16 are then screwed in again until the compression springs 19 generate a predetermined pretensioning force on the pressure pieces 17, 1 ⁇ .
• the embossing stamp 3 is pressed against the opposing pressure pieces 17, 18. If the stamping die 3 is now to be moved in the axial direction of the hot stamping cylinder 1, the two threaded screws 16 of the unsprung pressure pieces 17 are rotated uniformly. If necessary, the biasing force of the compression springs 19 of the sprung, opposing pressure pieces 18 is readjusted.

Landscapes

• Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
• Shaping Of Tube Ends By Bending Or Straightening (AREA)
• Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
• Treatment Of Fiber Materials (AREA)
• Paper (AREA)
• Jellies, Jams, And Syrups (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7789710

Family Applications (1)

Country Status (6)

Families Citing this family (25)

Family Cites Families (5)

• 1996
  • 1996-03-28 DE DE19612314A patent/DE19612314C1/de not_active Expired - Fee Related
• 1997
  • 1997-03-20 DE DE59701175T patent/DE59701175D1/de not_active Expired - Fee Related
  • 1997-03-20 EP EP97920531A patent/EP0889789B1/fr not_active Expired - Lifetime
  • 1997-03-20 AT AT97920531T patent/ATE190014T1/de not_active IP Right Cessation
  • 1997-03-20 WO PCT/DE1997/000569 patent/WO1997036756A1/fr active IP Right Grant
  • 1997-03-20 US US09/155,027 patent/US6062134A/en not_active Expired - Fee Related
  • 1997-03-20 JP JP53479697A patent/JP4173548B2/ja not_active Expired - Fee Related

Non-Patent Citations (1)

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