EP2311611A2 - Procédé et outil de production de pièces découpées de matériau en forme de bande - Google Patents

Procédé et outil de production de pièces découpées de matériau en forme de bande Download PDF

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Publication number
EP2311611A2
EP2311611A2 EP10405193A EP10405193A EP2311611A2 EP 2311611 A2 EP2311611 A2 EP 2311611A2 EP 10405193 A EP10405193 A EP 10405193A EP 10405193 A EP10405193 A EP 10405193A EP 2311611 A2 EP2311611 A2 EP 2311611A2
Authority
EP
European Patent Office
Prior art keywords
blanks
tool
blade
partial
notches
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Withdrawn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
EP10405193A
Other languages
German (de)
English (en)
Other versions
EP2311611A3 (fr
Inventor
Martin Kropf
Andreas Hofer
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.)
Elag Verpackungen AG
Original Assignee
Elag Verpackungen 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
Application filed by Elag Verpackungen AG filed Critical Elag Verpackungen AG
Publication of EP2311611A2 publication Critical patent/EP2311611A2/fr
Publication of EP2311611A3 publication Critical patent/EP2311611A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • B31B50/16—Cutting webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • 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
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/14—Forming notches in marginal portion of work by cutting
    • 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
    • B26D9/00—Cutting apparatus combined with punching or perforating apparatus or with dissimilar cutting apparatus
    • 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
    • B26D11/00—Combinations of several similar cutting apparatus
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/12—Perforating by punching, e.g. with relatively-reciprocating punch and bed to notch margins of work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • B26F1/22—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material to form non-rectilinear cuts, e.g. for tabs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4481—Cutters therefor; Dies therefor having special lateral or edge outlines or special surface shapes, e.g. apertures
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming

Definitions

  • the invention relates to a method for producing blanks from sheet material, wherein the blanks are separated from the web by successively attached partial cuts.
  • Blanks of sheet material are needed, for example in the packaging industry, for example in the manufacture of boxes, envelopes or bags.
  • movable tools are used for cutting the web-like material, which successively attach partial cuts in the web-shaped material.
  • the position of the partial cuts with respect to the web is subject to a tolerance, both in the longitudinal and in the transverse direction of the web. Consequently, it is unavoidable that partial cuts do not exactly meet where this would actually be desirable. This can result in blanks not being separated from the web as desired, or that part cuts intersect, thereby undesirably cutting adjacent blanks.
  • Another possible effect of these tolerances is that blanks contain unwanted pieces of material that would actually belong to an adjacent blank.
  • the invention is based on the object to propose a method for producing blanks of sheet material, in which blanks arise with minimal loss of material, which are safely separated and contain no unwanted material parts.
  • the recesses have rounded contours. This creates an unwanted notch formed by the recesses in the blanks prevents outgoing and notch effect based tearing of the blanks.
  • the recesses are pointed to form a tear notch.
  • Another embodiment provides that at least one of the partial cuts is executed bent. This embodiment is particularly suitable for the production of blanks with rounded corners.
  • the invention also relates to a tool for producing blanks, having at least one blade with a free end and at least one blade arranged on the blade.
  • This aspect of the invention is based on the object of providing a tool with which blanks of the described type can be produced efficiently.
  • the blade has an extension with a cutting edge at its free end.
  • This solution has the advantage that a partial cut and a recess are produced in a single operation by the cutting edge and the extension with the cutting edge.
  • the position of the relevant section is subject to the associated recess no tolerance fluctuation.
  • the extension has rounded contours. This prevents unwanted tearing of the blanks starting from notches formed in the blanks through the recesses in the blanks and based on notch effect.
  • the extension has a tip arranged at an angle to the cutting edge. This allows you to make blanks with tear notches with the tool.
  • two blades are arranged on the blade. As a result, two partial cuts can be made simultaneously.
  • Another embodiment provides that the blades run towards each other against the free end of the blade. Such a tool is advantageous when corners of adjacent blanks are to be chamfered.
  • At least one cutting edge is concavely bent.
  • Such a tool is advantageous, for example, when corners of adjacent blanks are to be rounded.
  • a further embodiment provides that the tool has at least two blades which are arranged at an angle to each other. This allows editing multiple blanks simultaneously.
  • FIG. 1 shows schematically and exemplarily, as in a known manner from a material web 1, which moves in the web direction 2 will, blanks 3 and 4 are produced.
  • first oblique sections 5 are produced, whereupon the sections 3, 4 are separated from the lane 1 by further sections 6.
  • the partial cut 5 is made so long that it intersects the partial cut 6. So that an adjacent blank 3, 4 is not damaged by the section of the partial section 5 crossing the partial section 6, a further partial section 8 is executed parallel to the partial section 6, whereby a waste strip 7 is formed.
  • An injury of blanks 3, 4 by short incisions is not only undesirable for aesthetic reasons, but also because such incisions may act unintentionally like tear scores. If the blanks are bags, the incisions may also cause the bags to leak.
  • One of the objects of the invention is to eliminate the need for said waste strips 7.
  • FIG. 2 shows schematically how blanks 3, 4 can be made from a web 1 moved in the web direction 2 according to a method according to the invention blanks.
  • the sections 5 and 6 meet are previously in the web 1 recesses 9 attached, for example by punching.
  • the recesses 9 are round in this example, so that no notch effect emanates from them.
  • the diameter of the recesses 9 preferably corresponds at least to the tolerance of the positioning inaccuracy of the partial cuts.
  • the partial cuts 5, 6 for a secure separation of the blanks 3, 4 from the material web 1 no longer be designed so that they cross each other. Rather, the sections are 5, 6 always meet in a recess 9 within the positioning accuracy.
  • leave the recesses 9 in the blanks 3, 4 after the separation of the material web 1 notches 10 but it was found that such notches 10 are not visually disturbing. And because the notches have 10 round contours, they do not have a notch effect.
  • FIGS. 3 to 5 12 schematically show details of the production of blanks 15, 16 according to a method known from the prior art.
  • FIG. 3 is a section of a tool 11 for producing partial cuts on the edge of a material web shown schematically.
  • Two rounded blades 12 and 13 are intended to apply partial cuts from the edge of the web to round the corners of blanks 16, 17 to be formed. Since for reasons of strength, the blade 14 between the two cutting edges 12 and 13 can not be designed quite acute, the blade 14 at its free end has a width 15. After attaching the shape of the tool 11 corresponding partial cuts at the edge of the web, the blanks 16, 17 separated by another partial section of the web, as in FIG. 4 sees.
  • edge section 18, 19 forming partial section is performed exactly at the desired location, resulting in the blanks 16, 17 small paragraphs 20, which are due to the mentioned width 15 and generally not disturbing.
  • the position of the further partial section is shifted in the direction of the blank 17 due to the described tolerance.
  • a barely visible edge 21 at the transition from the radius to the edge 19 has arisen on the blank 17.
  • a material part 22 remain, which would actually belong to the blank 17.
  • Such pieces of material 22 are referred to in the art as flags.
  • flags are undesirable because they can hinder the further processing of the blanks, for example by interlocking with each other. Especially in the production of packaging flags are very feared because they fall off and can subsequently fall into the interior of the package.
  • FIGS. 6 to 8 show an embodiment of the production of blanks according to the invention.
  • the blanks 24 to 27 are packing bags in this example.
  • FIG. 6 the contour of a tool 23 for producing partial cuts in a material web is shown schematically.
  • the tool 23 is intended to simultaneously round the corners of four blanks 24 to 27 adjacent to one another in a material web, as will be described hereinafter with reference to FIGS FIGS. 7 and 8 will be described in more detail.
  • the tool 23 has four star-shaped blades 32, 33, 36 and 37, between each of which an arcuate cutting edge 28 to 31 extends. At the end of each blade an extension 34, 35, 38 and 39 is arranged, wherein the extensions 34 and 35 are rounded and the extensions 38 and 39 have a tapered contour.
  • FIGS. 7 and 8 each showed a section of a material web, in which the corners of four blanks 24 to 27 meet.
  • the four blanks are separated by a partial horizontal section 40 in the figures and a partial vertical section 41 in the figures.
  • the blanks are shown apart from each other. During production, when attaching the partial cuts 40 and 41, the edges of adjacent blanks are adjacent to each other. The difference between the FIGS.
  • FIG. 7 and 8 is that at FIG. 7 the partial cuts 40 and 41 are positioned exactly at the desired location, whereas in the illustration to FIG. 8 the partial section 40 in the figure down and the partial section 41 is shifted in the figure to the right, as may occur due to the mentioned positioning tolerances.
  • How to get in FIG. 7 sees end to the horizontal part of section 40 adjacent curves of the blanks 24 to 27 in notches 42 to 45, which do not interfere with the finished product and also form due to their round shape not unwanted starting points of cracks in the blanks.
  • the curves of the blanks 24 to 27 which adjoin the vertical partial section 41 terminate in notches 46 to 49, which taper to a point on their side facing away from the partial section 41.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
EP10405193A 2009-10-14 2010-10-13 Procédé et outil de production de pièces découpées de matériau en forme de bande Withdrawn EP2311611A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01579/09A CH702012A1 (de) 2009-10-14 2009-10-14 Verfahren und Werkzeug zum Herstellen von Zuschnitten aus bahnförmigem Material.

Publications (2)

Publication Number Publication Date
EP2311611A2 true EP2311611A2 (fr) 2011-04-20
EP2311611A3 EP2311611A3 (fr) 2011-06-15

Family

ID=41529868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10405193A Withdrawn EP2311611A3 (fr) 2009-10-14 2010-10-13 Procédé et outil de production de pièces découpées de matériau en forme de bande

Country Status (2)

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EP (1) EP2311611A3 (fr)
CH (1) CH702012A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3014725A1 (fr) * 2013-12-13 2015-06-19 Terrateck Sas Dispositif de perforation des films de paillage par matrice en etoile
ITUA20162321A1 (it) * 2016-04-05 2017-10-05 Ica Spa Produzione di confezioni di materiale flessibile aventi uno o più spigoli arrotondati e una o più indentature per l`apertura facilitata
EP3978378A1 (fr) * 2020-10-01 2022-04-06 MULTIVAC Sepp Haggenmüller SE & Co. KG Dispositif de coupe et procédé de fabrication d'un poinçon de coupe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958051A (en) * 1972-08-07 1976-05-18 Monarch Marking Systems, Inc. Composite label web and method of making same
FR2596033B1 (fr) * 1986-03-19 1989-03-31 Auvergne Sa Carton Installation de transformation de materiau en bande tel que carton ondule, comportant une pluralite de postes fonctionnant en synchronisme
US5022297A (en) * 1990-05-25 1991-06-11 E. I. Du Pont De Nemours And Company Method and apparatus for preparing sheet stacks
DE502004009593D1 (de) * 2004-10-26 2009-07-23 Bhs Corr Masch & Anlagenbau Verfahren zum Formatwechsel in einer Wellpappe-Anlage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3014725A1 (fr) * 2013-12-13 2015-06-19 Terrateck Sas Dispositif de perforation des films de paillage par matrice en etoile
ITUA20162321A1 (it) * 2016-04-05 2017-10-05 Ica Spa Produzione di confezioni di materiale flessibile aventi uno o più spigoli arrotondati e una o più indentature per l`apertura facilitata
WO2017175127A1 (fr) * 2016-04-05 2017-10-12 Ica S.P.A. Production d'emballages en matériau souple comprenant un ou plusieurs coins arrondis et une ou plusieurs indentations pour une ouverture facile
EP3978378A1 (fr) * 2020-10-01 2022-04-06 MULTIVAC Sepp Haggenmüller SE & Co. KG Dispositif de coupe et procédé de fabrication d'un poinçon de coupe
US12030208B2 (en) 2020-10-01 2024-07-09 Multivac Sepp Haggenmueller Se & Co. Kg Cutting device and method for manufacturing a cutting punch

Also Published As

Publication number Publication date
CH702012A1 (de) 2011-04-15
EP2311611A3 (fr) 2011-06-15

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