EP0132938A1 - Dispositif de coupe à matrice rotative avec éjection des chutes - Google Patents

Dispositif de coupe à matrice rotative avec éjection des chutes Download PDF

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Publication number
EP0132938A1
EP0132938A1 EP84303821A EP84303821A EP0132938A1 EP 0132938 A1 EP0132938 A1 EP 0132938A1 EP 84303821 A EP84303821 A EP 84303821A EP 84303821 A EP84303821 A EP 84303821A EP 0132938 A1 EP0132938 A1 EP 0132938A1
Authority
EP
European Patent Office
Prior art keywords
spike
roll
scrap
plate
forme
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.)
Withdrawn
Application number
EP84303821A
Other languages
German (de)
English (en)
Inventor
David John Garfield Bishop
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.)
Deritend Engineering Co Ltd
Original Assignee
Deritend Engineering Co 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
Application filed by Deritend Engineering Co Ltd filed Critical Deritend Engineering Co Ltd
Publication of EP0132938A1 publication Critical patent/EP0132938A1/fr
Withdrawn legal-status Critical Current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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1836—Means for removing cut-out material or waste by pulling out
    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/146—Cutting, e.g. perforating, punching, slitting or trimming using tools mounted on a drum
    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming

Definitions

  • This invention relates to rotary die-cutting of card and like material from blanks or web.
  • This die-cutting is used for example to produce blanks of complex shape which can be erected into cartons or boxes.
  • a carton may have a base, sides and a lid, with flaps to interconnect the parts, and all the rest of the blank (or web portion) is scrap.
  • the object of the present invention is to provide improved means for dealing with the scrap capable of utilisation at different parts of the blank.
  • a rotary die-cutter comprises a roll pair and a stripping mechanism comprises a headed spike mounted on one roll of the pair and for impaling scrap, an ejector plate normally located between the head of the spike and the roll which supports the spike, the plate being associated with the spike and extending at least on two opposite lateral sides of the spike, and means for displacing the plate in the direction of the length of the spike so as to lift the scrap from impalement when so moved at a point displaced from the rolls nip.
  • the spike is mounted on the roll which carries the cutting knives.
  • the cutting knives are held to a forme mounted on the roll and the spike is mounted on the same forme closely adjacent to the knife.
  • the knife may be arranged to cut onto a yielding anvil which may also serve to cause the scrap to be impaled by the spike, or alternatively the impression roll (the anvil) may have a hole to receive the spike to the same purpose.
  • the ejector plate may be mounted on a rod extending parallel to the roll surface and associated with lever means, for example cam operated, to cause it to be displaced in one or both directions. Where cam displaced in one direction, the plate may be spring displaced in the opposite direction.
  • the upper roll 10 is provided with a yielding surface to act as an anvil, and the lower roll 12 carries a sheet metal forme 14 on its surface.
  • the forme carries a pattern of cutting rule 16 held in place by studs 18 welded to the torme.
  • the general construction and arrangement of forme with various kinds of studs is explained in our previous patent No. GB-1074291-A.
  • the rule is also provided with a number of stripping studs 20 each having a head 22 and a reduced dimension shank 24, and such stripping studs (as explained in said previous patent) are intended to impale the scrap and carry it about the axis of the roll for removal at an angularly spaced location.
  • the problem is similar to that in connection with the actual severance of the scrap portion from the remaining portion as explained hereinbefore, in that the better is impaled on the spike 20 22 24, the more difficult it is to remove at the angularly spaced location.
  • the present invention solves this problem by using the ejector plate such as 26 in the accompanying drawing.
  • the plate is normally located between the blank and the roll and may be apertured so that the stripping spike extends through the aperture 28.
  • the plate is fast with a shaft 30 journalled in further studs 32 welded to the forme.
  • the shaft 30 can be turned angularly by means not shown in the figure so as to displace the plate clockwise and hence lift an impaled piece of scra l ) off the spike, allowing it to fall or be drawn by an air current for safe removal at a position well clear of the plane of the blank.
  • the figure shows the leading edge of the blank 34 approaching the nip travelling in the direction of the arrow B, but it shows it spaced from what would be its normal true position in relation to the rule 16 and spike, in the interests of clarity in the drawing.
  • Figure 2 shows the position after the nip (it is assumed that the roll is travelling in the direction of the arrow A in the figures) when a scrap piece 36 is impaled on the spike having been cut-off by the pattern of rule embedding on the impression roll 10, and impaled by the spike 22 also embedding in the surface of the roll 10 or perhaps engaging in an appropriate aperture provided in the surface for the purpose.
  • the plates 26 is located between the scrap 36 and the forme 14.
  • the shaft 30 can be provided with a square end connected by a lever or link to a cam follower running in a simple cam track on the cylinder end, so that at a position further angularly displaced and preferably more than 90° spaced from the roll nip as illustrated in Figure 3, the shaft is turned angularly to displace scrap off the spike. At a further angularly spaced position (not shown) the ejector plate is returned to the illustrated position in the drawing.
  • the cam may be used for the ejection movement and spring return provided, or vice versa, as an alternative to using cam movement in both directions.
  • front edge stripping is to say a strip along the leading edge of the blank or web is to be cut off
  • the leading edge is not straight but may comprise a series of straight portions lying on two or more parallel lines and connected by slots extending along the length of the blank, that is in the direction of the arrow B.
  • a series of plates 26 may be made of different lengths, but all be operated by the same shaft.
  • two or more shafts may be provided at different angular locations each carrying its own set of plates to engage against the scrap at different positions.
  • leading edge scrap may be where "dead lay" cutting is involved, that is to say the front edge of the blank is not cut over the whole of its width, but there are merely a series of slot-like parts cut from the leading edge, and in this case a separate plate may be provided for each such part.
  • Side edge scrap may be treated in generally the same way, possibly using relatively short shafts similar to 30 extending inwardly from opposite end portions of the roll towards the laterally located cutting edges provided on the roll.
  • the invention can also be used to deal with what might be called internal scrap: that is to say hand-holes and the like which are located within the area of the blank rather than scrap portions located exterior to the area of the blank.
  • internal scrap that is to say hand-holes and the like which are located within the area of the blank rather than scrap portions located exterior to the area of the blank.
  • the equivalent of the shaft 30 may be necessary for the equivalent of the shaft 30 to extend across the line of the rule, and the rule may bridge between a pair of studs so as to have a clearance between the inner and non-cutting edge of the rule and the adjacent area of the sheet metal forme to allow the shaft to pass through, or alternatively where the shaft extends parallel to the rule, to allow the plate 26 to pass below the rule into the hand-hole or like area.
  • the stud combines the features of the ones 18 and 32.
  • each individual forme made to produce a particular shaped and sized blank requires a particular stripping pattern, and effectively the stripping may be built into the same forme, and attached to the die-cutting machine and removed from the same with the forme when the present invention is used.
  • This is in distinction from other known stripping arrangements where after attaching a forme for a particular blank it is necessary to make adjustments to existing stripping apparatus to make it match the forme, and hence the invention provides particularly auick setting up times.
  • a very important advantage of the invention is that an area designated as scrap is impaled and fixed in position before it is cut out of the blank.
  • any scrap piece must include a cut line behind the spike 22, for example cut by rule 16 in Figure 1. Consequently the cut around the scrap piece can be continuous and complete.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
EP84303821A 1983-07-07 1984-06-06 Dispositif de coupe à matrice rotative avec éjection des chutes Withdrawn EP0132938A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8318444 1983-07-07
GB838318444A GB8318444D0 (en) 1983-07-07 1983-07-07 Apparatus for rotary die-cutting and stripping

Publications (1)

Publication Number Publication Date
EP0132938A1 true EP0132938A1 (fr) 1985-02-13

Family

ID=10545392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84303821A Withdrawn EP0132938A1 (fr) 1983-07-07 1984-06-06 Dispositif de coupe à matrice rotative avec éjection des chutes

Country Status (3)

Country Link
EP (1) EP0132938A1 (fr)
DK (1) DK333584A (fr)
GB (1) GB8318444D0 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2243798A (en) * 1990-05-09 1991-11-13 Amcor Packaging Rotary cutting die
WO2016030830A1 (fr) * 2014-08-26 2016-03-03 Highcon Systems Ltd. Procédé et appareil de décapage de substrat
US10556415B2 (en) 2015-08-26 2020-02-11 Highcon Systems Ltd Method and apparatus for building a 3D object from layers of pre-stripped substrate
CN118514386A (zh) * 2024-07-19 2024-08-20 晋江市现代彩色印刷有限公司 纸箱生产的环保型印刷机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116121957B (zh) * 2023-02-27 2023-10-13 江苏豪悦实业有限公司 一种无纺布生产工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1074291A (en) * 1965-01-14 1967-07-05 Deritend Eng Co Improvements relating to the die cutting of blanks
DE3045095A1 (de) * 1979-12-31 1981-08-06 The Ward Machinery Co., Cockeysville, Md. Vorrichtung zum abstreifen von abfallstuecken von zuschnitten
US4331053A (en) * 1979-07-31 1982-05-25 Mitsubishi Jukogyo Kabushiki Kaisha Rotary die cutter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1074291A (en) * 1965-01-14 1967-07-05 Deritend Eng Co Improvements relating to the die cutting of blanks
US4331053A (en) * 1979-07-31 1982-05-25 Mitsubishi Jukogyo Kabushiki Kaisha Rotary die cutter
DE3045095A1 (de) * 1979-12-31 1981-08-06 The Ward Machinery Co., Cockeysville, Md. Vorrichtung zum abstreifen von abfallstuecken von zuschnitten

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2243798A (en) * 1990-05-09 1991-11-13 Amcor Packaging Rotary cutting die
GB2243798B (en) * 1990-05-09 1994-02-02 Amcor Packaging Rotary cutting die
WO2016030830A1 (fr) * 2014-08-26 2016-03-03 Highcon Systems Ltd. Procédé et appareil de décapage de substrat
US10556415B2 (en) 2015-08-26 2020-02-11 Highcon Systems Ltd Method and apparatus for building a 3D object from layers of pre-stripped substrate
CN118514386A (zh) * 2024-07-19 2024-08-20 晋江市现代彩色印刷有限公司 纸箱生产的环保型印刷机

Also Published As

Publication number Publication date
DK333584D0 (da) 1984-07-06
DK333584A (da) 1985-01-08
GB8318444D0 (en) 1983-08-10

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19851014

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Inventor name: BISHOP, DAVID JOHN GARFIELD