EP0627303B1 - Rotationsprägevorrichtung - Google Patents

Rotationsprägevorrichtung Download PDF

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Publication number
EP0627303B1
EP0627303B1 EP94401119A EP94401119A EP0627303B1 EP 0627303 B1 EP0627303 B1 EP 0627303B1 EP 94401119 A EP94401119 A EP 94401119A EP 94401119 A EP94401119 A EP 94401119A EP 0627303 B1 EP0627303 B1 EP 0627303B1
Authority
EP
European Patent Office
Prior art keywords
marking
profile
roller
cross
chamfer
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
EP94401119A
Other languages
English (en)
French (fr)
Other versions
EP0627303A1 (de
Inventor
Jean-Pierre Roux
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.)
Komori Chambon SA
Original Assignee
Komori Chambon SA
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 Komori Chambon SA filed Critical Komori Chambon SA
Publication of EP0627303A1 publication Critical patent/EP0627303A1/de
Application granted granted Critical
Publication of EP0627303B1 publication Critical patent/EP0627303B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/08—Creasing
    • B31F1/10—Creasing by rotary tools
    • 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
    • B31B50/25—Surface scoring
    • B31B50/254—Surface scoring using tools mounted on belts or chains

Definitions

  • the present invention relates to a rotary shaping device intended to produce a marking thread profile on a cardboard blank in order to facilitate its folding.
  • Such a device is known from document GB-A-2 176 720.
  • Certain cardboard blanks in particular those which are intended to constitute, after folding, boxes or packaging, are subjected according to their different fold lines, to a hollow marking.
  • One method of producing such a marking consists in passing the cardboard blank between a male imprint and a female imprint of substantially complementary shapes which are applied one against the other so as to repel the following cardboard the fold lines, towards the inside of what will form after folding, the packaging.
  • Packages are also known which are produced from a cardboard blank, one face of which, intended to constitute the internal wall of the package, is coated with a thin sheet of plastic material such as polyethylene, which ensures the tightness of the packaging, so that it can be used to store liquids.
  • polyethylene plastic material
  • this polyethylene sheet during folding during which the packaging is formed, is also subjected to the folding constraints so that it risks losing its sealing qualities.
  • the present invention proposes to remedy these drawbacks by proposing a device for forming a marking net on a cardboard blank making it possible to avoid breaking the external face and / or the internal face of the latter during the folding operation.
  • the present invention thus relates to a rotary shaping device intended to ensure the continuous formation of at least one marking net on a cardboard blank, by means of two rotary cylinders comprising marking profiles, namely a first profile.
  • embossed marking provided on a cylinder and a second hollow profile provided on the other cylinder, between which the cardboard blank is pressed, the cross section of the hollow profile having two opposite sides, notably substantially parallel, of the width of the net marking to be formed, the relief profile having a cross section consisting of two substantially radial sides spaced apart by a distance less than that of the sides of the hollow profile and which extend from the cylinder and are each followed by at least a chamfer inclined at an acute angle to each side.
  • each of the chamfers is inclined, with respect to each side, by an angle between 30 ° and 60 °.
  • the cross section of the hollow profile is connected at its upper part with the surface of the cylinder by at least one chamfer.
  • the rotary shaping device represented in FIGS. 1 and 2 consists of two rotary cylinders 1 and 2, on the surface of which are respectively etched, for example by mechanical means, a hollow profile 3 and a raised profile 5, and between which is pressed a cardboard blank 4 on which it is desired to form marking nets.
  • the cross section of the hollow profile 3 consists of two sides 7 of radial direction, substantially parallel, spaced by a distance a corresponding to the width of the thread which it is desired to form on the cardboard blank 4. Taking into account the small width a separating the two sides 7, in comparison with the diameter D of cylinders 1 and 2, it will be assumed in the present text that the sides 7 are parallel.
  • the cross section of the profit in relief 5 is formed by two parallel sides 9, in radial direction, spaced apart by a distance b less than the distance a , by two chamfers 11 forming an acute angle ⁇ with the respective sides 9, and by a top of the net 13 perpendicular to the sides 9.
  • the chamfer 11 may consist of several segments 11a, 11b of equal or different importance.
  • the Applicant has found that the quality of the net produced on the cardboard blank was further improved by giving the cross-section of the hollow profit 3, as shown in FIG. 4, a profit such that its walls 7 are connect, at their upper part, with the surface of the cylinder 2 by at least one chamfer 10.
  • the chamfer 10 may consist of a continuous line such as a rounded 10a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Claims (4)

  1. Rotationsprägevorrichtung zur fortlaufenden Ausbildung mindestens eines Einprägestegs auf einem Kartonzuschnitt (4) mittels zweier Prägeprofile aufweisender Drehzylinder (1, 2), zwischen denen der Kartonzuschnitt (4) eingeklemmt ist, wobei der eine Zylinder (1) ein erstes erhabenes Prägeprofil (5) und der andere Zylinder (2) ein zweites eingesenktes Prägeprofil (3) hat und der Querschnitt des eingesenkten Profils (3) zwei gegnüberliegende, insbesondere im wesentlichen parallele Seiten von der Breite (a) des zu bildenden Einprägestegs besitzt und das erhabene Profil (5) einen Querschnitt besitzt, der aus zwei im wesentlichen in radialer Richtung verlaufenden Seiten (9) besteht, die um eine geringere Distanz (b) als diejenige der Seiten des eingesenkten Profils (3) voneinander entfernt sind und sich vom Zylinder (1) weg erstrecken und auf die mindestens eine Fase (11, 11a, 11b) folgt, die um einen spitzen Winkel (α) gegenüber jeder Seite (9) geneigt ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jede der Fasen (11) bezüglich jeder Seite (9) um einen Winkel (α), der zwischen 30° und 60° beträgt, geneigt ist.
  3. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Querschnitt des eingesenkten Profils (3) an seiner Oberseite über mindestens eine Fase (10, 10a) mit der Zylinderoberseite (2) verbunden ist.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Fase eine durchgehen konvexe Linie (10a) bildet.
EP94401119A 1993-05-19 1994-05-19 Rotationsprägevorrichtung Expired - Lifetime EP0627303B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9306057A FR2705273B1 (fr) 1993-05-19 1993-05-19 Dispositif de façonnage rotatif et procédé de fabrication de ce dispositif.
FR9306057 1993-05-19

Publications (2)

Publication Number Publication Date
EP0627303A1 EP0627303A1 (de) 1994-12-07
EP0627303B1 true EP0627303B1 (de) 1997-12-10

Family

ID=9447296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94401119A Expired - Lifetime EP0627303B1 (de) 1993-05-19 1994-05-19 Rotationsprägevorrichtung

Country Status (4)

Country Link
EP (1) EP0627303B1 (de)
JP (1) JPH0724939A (de)
DE (1) DE69407217T2 (de)
FR (1) FR2705273B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6004251A (en) * 1997-08-06 1999-12-21 Klearfold, Inc. Plastic sheets with scoring lines
GB2375506A (en) * 2001-05-15 2002-11-20 Jeffery Charles Warner Former for creasing paper or card prior to folding
US7211796B2 (en) 2003-05-27 2007-05-01 Kabushiki Kaisha Toshiba Substrate inspection apparatus, substrate inspection method and method of manufacturing semiconductor device
EP2127860B1 (de) 2008-05-28 2016-03-30 Müller Martini Holding AG Vorrichtung zur Bildung einer Rille
JP2010284864A (ja) * 2009-06-11 2010-12-24 Nippon Die Steel Kk 罫線形成用溝部材
CA3227275A1 (en) * 2021-08-13 2023-02-16 Charles Boegli Method and tool for embossing of barrier paper

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS521696A (en) * 1975-06-24 1977-01-07 Mitsubishi Metal Corp Discharge groove machining method
US4226330A (en) * 1976-11-01 1980-10-07 Butler Robert W Rupture lines in flexible packages
US4080878A (en) * 1977-01-05 1978-03-28 The Brown-Bridge Mills Inc. Apparatus for forming a stripable backing material for pressure-sensitive adhesive carrying substrates
DE2851726A1 (de) * 1978-11-30 1980-06-04 Hans Hagner Verfahren zum praegen von thermoplastischen folien
JPS5858534B2 (ja) * 1979-06-27 1983-12-26 日鉄鉱業株式会社 スラスタ−制動装置の保持装置
IT1140786B (it) * 1980-03-28 1986-10-10 Montedison Spa Composti acaridici
CH666219A5 (fr) * 1985-06-19 1988-07-15 Bobst Sa Procede de fabrication d'un outillage de decoupage et outillage ainsi obtenu.
JPS62102976A (ja) * 1985-10-30 1987-05-13 Hitachi Ltd 高精度溝入切断装置
JPH0221933A (ja) * 1988-07-12 1990-01-24 Sansei Giken Kk 静的泡発生装置および静的泡発生方法
JPH02277620A (ja) * 1989-04-20 1990-11-14 Mitsubishi Heavy Ind Ltd 段ボールシートの加工方法
JPH0444351U (de) * 1990-08-15 1992-04-15
US5158525A (en) * 1992-01-22 1992-10-27 Westvaco Corporation Adjustable wear pads for slotting head yoke plates

Also Published As

Publication number Publication date
DE69407217T2 (de) 1998-07-09
DE69407217D1 (de) 1998-01-22
FR2705273A1 (fr) 1994-11-25
FR2705273B1 (fr) 1995-07-21
JPH0724939A (ja) 1995-01-27
EP0627303A1 (de) 1994-12-07

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