EP0444814A1 - Rotation-Schneid-Stanzvorrichtung - Google Patents

Rotation-Schneid-Stanzvorrichtung Download PDF

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Publication number
EP0444814A1
EP0444814A1 EP91301314A EP91301314A EP0444814A1 EP 0444814 A1 EP0444814 A1 EP 0444814A1 EP 91301314 A EP91301314 A EP 91301314A EP 91301314 A EP91301314 A EP 91301314A EP 0444814 A1 EP0444814 A1 EP 0444814A1
Authority
EP
European Patent Office
Prior art keywords
forme
die cutting
cutting apparatus
cylinder
rotary die
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
EP91301314A
Other languages
English (en)
French (fr)
Other versions
EP0444814B1 (de
Inventor
Barrie Hardisty
Robert Collins
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.)
SCM Container Machinery Ltd
Original Assignee
Simon Container Machinery Ltd
SCM Container Machinery Ltd
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 claimed from GB909004513A external-priority patent/GB9004513D0/en
Application filed by Simon Container Machinery Ltd, SCM Container Machinery Ltd filed Critical Simon Container Machinery Ltd
Publication of EP0444814A1 publication Critical patent/EP0444814A1/de
Application granted granted Critical
Publication of EP0444814B1 publication Critical patent/EP0444814B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D2007/2607—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member for mounting die cutters

Definitions

  • THIS INVENTION concerns rotary die cutting apparatus of the kind comprising a cylinder driven in rotation and carrying on its surface a removable forme having knives projecting radially therefrom.
  • rotary die cutting apparatus of the kind comprising a cylinder driven in rotation and carrying on its surface a removable forme having knives projecting radially therefrom.
  • flat board is transported tangentially past the cylinder so that the knives perform a predetermined cut on the board.
  • the forme which is usually made from timber and preformed, is attached to the surface of the cylinder by screws which must be aligned with threaded apertures in the cylinder.
  • a lengthy procedure is required to remove and replace a considerable number of screws.
  • the forme may be mechanically clamped onto the cylinder wall using cumbersome clamping arrangements so that the cylinder requires careful balancing.
  • An object of the present invention is to provide, in rotary die cutting apparatus, a means for removably mounting a forme such that it may be easily and rapidly removed from the cylinder for replacement.
  • rotary die cutting apparatus comprising a driven rotary cylinder on which is circumferentially mounted a removable forme having knives projecting radially therefrom, characterised in that the forme is magnetically retained on the surface of said cylinder.
  • a rotatable cylinder 10 which is driven in rotation by conventional means (not shown) and on which is circumferentially mounted a wooden forme 11 constituted, in this example, by a pair of separately mounted substantially semi-circular sections which are in edge-to-edge abutting relationship at one side as illustrated at 12 with a gap 13 at the other side.
  • Each forme section carries, in accordance with a predetermined cutting pattern, an arrangement of radially projecting knives 14.
  • each forme section Extending longitudinally of each forme section on the inner surface thereof are a plurality of spaced steel bars 15, 16 and 17. These may be attached to the forme by countersunk machine screws as illustrated at 18.
  • the steel bars 15, 16 and 17 are so positioned as to be received within complementary longitudinal grooves 19 in the outer surface of the cylinder 10.
  • a plurality of permanent electric holding magnets 20 retained within housings 21 and arranged to be energised by power means (not shown) external to the cylinder.
  • Such magnets are energised to change their polarity, but may be an operative or inoperative mode with the power turned off.
  • the steel bar 17 has one edge chamfered as illustrated at 17a such that the forme may be mounted on the cylinder by initially locating bars 15 and 16 in their respective grooves 19, and, by virtue of the flexibility of the forme 11 and the assistance of the chamfered edge 17a, finally locating bar 17 in its respective groove.
  • the magnets 20 retain the steel bars 15, 16 and 17 in their respective slots 19 to overcome the centrifugal force which would otherwise tend to free the formes from the cylinder 10. Once the magnets are de-energised the forme may be readily removed by initially removing bars 17 from their slots and subsequently the bars 16 and 15.
  • the forme may consist of one or several sections according to the required length of cut and may be removed from its associated cylinder in a matter of seconds and replaced so that machine down-time is considerably reduced when compared with the conventional techniques of bolting or clamping formes in place.
  • the magnets 20 may be by permanent magnets thus avoiding the need for a power supply. In this case however a special tool may be required to release at least an initial one of the steel bars before the forme may be removed by hand.

Landscapes

  • 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)
EP91301314A 1990-02-28 1991-02-19 Rotation-Schneid-Stanzvorrichtung Expired - Lifetime EP0444814B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB909004513A GB9004513D0 (en) 1990-02-28 1990-02-28 A rotary die cutting apparatus
GB9004513 1990-02-28
GB9021701A GB2241460B (en) 1990-02-28 1990-10-05 A rotary die cutting apparatus
GB9021701 1990-10-05

Publications (2)

Publication Number Publication Date
EP0444814A1 true EP0444814A1 (de) 1991-09-04
EP0444814B1 EP0444814B1 (de) 1995-12-27

Family

ID=26296732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91301314A Expired - Lifetime EP0444814B1 (de) 1990-02-28 1991-02-19 Rotation-Schneid-Stanzvorrichtung

Country Status (4)

Country Link
EP (1) EP0444814B1 (de)
AT (1) ATE132068T1 (de)
DE (1) DE69115734T2 (de)
ES (1) ES2083518T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7131378B2 (en) 2002-12-10 2006-11-07 Heidelberger Druckmaschinen Ag Device for processing a printing substrate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE949212C (de) * 1955-01-09 1956-09-13 Jagenberg Werke Ag Befestigung von Schneidbuechsen auf Walzenkoerpern an Rollenschneidemaschinen
DE2126018A1 (de) * 1971-05-26 1972-12-07 Eickhoff, Universal Wellpappenmaschinen GmbH, 4630 Bochum Spannkörper für Kreismesser od.dgl
EP0220432A1 (de) * 1985-10-03 1987-05-06 Peters Maschinenfabrik GmbH Schneid- und Rillvorrichtung für Papier- oder Pappebahnen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE949212C (de) * 1955-01-09 1956-09-13 Jagenberg Werke Ag Befestigung von Schneidbuechsen auf Walzenkoerpern an Rollenschneidemaschinen
DE2126018A1 (de) * 1971-05-26 1972-12-07 Eickhoff, Universal Wellpappenmaschinen GmbH, 4630 Bochum Spannkörper für Kreismesser od.dgl
EP0220432A1 (de) * 1985-10-03 1987-05-06 Peters Maschinenfabrik GmbH Schneid- und Rillvorrichtung für Papier- oder Pappebahnen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7131378B2 (en) 2002-12-10 2006-11-07 Heidelberger Druckmaschinen Ag Device for processing a printing substrate

Also Published As

Publication number Publication date
ATE132068T1 (de) 1996-01-15
EP0444814B1 (de) 1995-12-27
ES2083518T3 (es) 1996-04-16
DE69115734D1 (de) 1996-02-08
DE69115734T2 (de) 1996-07-04

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