EP1010503B1 - Dispositif de coupe ayant un premier et un deuxième alignement d'outils pouvant se déplacer l'un vis-à-vis de l'autre le long de directions parallèles - Google Patents

Dispositif de coupe ayant un premier et un deuxième alignement d'outils pouvant se déplacer l'un vis-à-vis de l'autre le long de directions parallèles Download PDF

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Publication number
EP1010503B1
EP1010503B1 EP99124524A EP99124524A EP1010503B1 EP 1010503 B1 EP1010503 B1 EP 1010503B1 EP 99124524 A EP99124524 A EP 99124524A EP 99124524 A EP99124524 A EP 99124524A EP 1010503 B1 EP1010503 B1 EP 1010503B1
Authority
EP
European Patent Office
Prior art keywords
row
knives
web
distance
cutting
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
EP99124524A
Other languages
German (de)
English (en)
Other versions
EP1010503A2 (fr
EP1010503A3 (fr
Inventor
Jens Dipl.-Ing. Brinkmann
Dirk Dipl.-Ing. Cramer
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.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
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 Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1010503A2 publication Critical patent/EP1010503A2/fr
Publication of EP1010503A3 publication Critical patent/EP1010503A3/fr
Application granted granted Critical
Publication of EP1010503B1 publication Critical patent/EP1010503B1/fr
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
    • 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

Definitions

  • the invention relates to a cutting device for a Web, in particular a paper or board web, with a crossbar to which a knife assembly attached is that a first row of knives that are over the width of the web extends and several knives has, spaced apart in a row next to each other are arranged, and a second row of Knife has, in the second knife at a distance from each other are arranged.
  • Such a cutting device is known from US 2 266 958 A known.
  • the knives of the two rows have a V-shaped Cross-section on. They are offset from each other arranged so that the perforation process two Rows of V-shaped cuts result.
  • a coherent one Area of the track remains between the Ends of the legs at the open end of the V of a row and the thighs at the V of the other row.
  • These remaining Sections are relatively narrow, so that the Track easily be torn along the perforation can.
  • GB 883 410 A describes a perforation device with two rows of knives facing each other Sides of the web are arranged. One Cut should only be made where the two knives from opposite sides dive together in the train. By moving the two rows of blades against each other can the ratio of cutting length and Length of the remaining bridge to be changed.
  • One way of cutting requires two steps.
  • the web is first with the help of Cutting device cut in the manner of a perforation, that a series of relatively short cuts is introduced in a row next to each other. Between the short cuts remain webs on which the web still going through.
  • This cut also called Perforation line can be referred to in one certain distance before the actual separation point be introduced.
  • the actual separation takes place then later, adding the web to a specific Position is subjected to increased tensile stress.
  • the procedure has the advantage that the already weakened or perforated web still go through a part of a processing device can, for example, locally with an adhesive application to be provided or an Anwickelposition to to reach.
  • the invention is based on the object, the weakening and the strength of a material web better each other to be able to vote.
  • This object is in a cutting device of mentioned type achieved in that the second Row of knives parallel to the first row of knives is displaceable.
  • the knives of the first row and the knives of the second row are initially arranged so that they are at least largely in the direction of the web, one behind the other. In this position, the remaining between the incisions webs have the largest width. If you now move the two rows of blades transversely to the direction of the web against each other, then come the knives of the second row behind the knives of the first row and reduce the gap, so that the webs that remain after perforation, have a smaller width. The smaller the width of the remaining webs, the weaker the web becomes and the lower the tension needed to tear the web.
  • the blades of the first row and the Knives of the second row each to each other.
  • the individual sections can be generated continuously, without that between the two rows of blades in the Web still webs remain.
  • the individual cuts do not differ from those those with a cutting device with only one Knife row are made.
  • the knives of the first row and the Knives of the second row each have a cutting edge and the cutting edges abut each other.
  • the danger that is attached to the Ends of the individual cuts give rise to cracks unintentional weakening of the web could be kept small.
  • At least one position of the second Row adjustable relative to the first row in which all Knife of the second row from the corresponding knives covered in the first row.
  • This position sets the lowest possible weakening of the web. This position can then, so to speak, on the weakest Can be optimized web. If then webs to be cut, which has a higher tensile strength have, then the two rows of blades just shifted against each other.
  • the knives of the first row and the knives of the second Each row the same width and the same pitch exhibit. You can, so to speak, identical rows of knives use. This embodiment is therefore constructive very easy and facilitates stockpiling for the knives.
  • the distance of the knives of the second row greater than the distance of the knives of the first row.
  • the blades are the first and the second Row arranged in groups, taking between groups a gap remains larger than the gap the single knife in a group.
  • This embodiment is especially advantageous if you have two rows of knives used with different width knives, their division is different to that. One can then make sure with the groupwise subdivision that in one position only the knives of the first row become active because they are the knives of the second row completely cover, and in the other extreme position with the knives of the second row with care, that the remaining webs narrow in the web become.
  • the embodiment is especially preferred when the knives interact with a counterholder, which has at least one bracing, whose position matches a gap.
  • Fig. 1 shows a cutting device 1 for cutting a web 2, for example, a web of paper or cardboard.
  • the cutting device has a rotary crosshead 3, to which a knife assembly 4 is attached. If the web 2 moves in the direction of an arrow 5 and the rotary crosshead 3 is rotated in the direction of an arrow 6 is, then the knife assembly 4 dives into the web and perforate them, as described below becomes. When the rotational speed of the rotary beam 3 on the feed rate of the web 2 is tuned, then arise only relatively narrow cuts.
  • a counter-holder 7 is provided, the recesses. 8 in which the blades of the knife assembly 4 enter can.
  • the knife assembly 4 a plurality of knives 9, each in Groups 10 are arranged. Between individual groups There are gaps 11 that are so wide that struts 12 fit in between the individual recesses 8 are provided in the anvil 7.
  • the knife 9 can be formed both as individual parts and, as shown, parts of an integrally formed one Cutter bar.
  • the knives 9 are, as shown in FIGS. 1 and 3, divided in two. So there are a number of first knives 14 and a series of second blades 15 which abut each other.
  • the first knife 14 a Cutting edge 16 at its "back”, while the second knife a cutting edge 17 at her Have "front”.
  • the two cutting edges 16, 17 lie on both sides of an imaginary plane and with each other.
  • Fig. 4a In the illustration of Fig. 4a are the first knife 14 and the second blade 15 congruent to each other. They are the same size and have the same Distance from each other. The sum of one blade width a and the distance b to the next knife also referred to as "division".
  • This cutting plan will be chosen for the web 2 with the lowest tear strength. As can be seen from the following explanation, namely the remaining webs 19 with the width b are the largest here. For example, one will select such a cutting plan if the web 2 is a paper having a basis weight of 40 g / m 2 . In this case, the width a of the knives 14, 15 is of the order of 5 mm and the width b of the webs 19 is of the order of 1 mm.
  • Fig. 4b now shows a setting in which the two blades 14, 15 are no longer congruent one above the other, but are displaced by a distance x parallel to each other.
  • the cuts 18 have the width a + x and the remaining webs 19 have the width b - x.
  • the tensile strength is greater, for example, cardboard with a basis weight of 250 g / m 2 .
  • Fig. 4c now shows an extreme example in which the displacement x equals the distance b between the individual Knives 14, 15 is. In this case arises continuous incision 18 without bridge. It remains however in the region of the gap 11 an area 20, the is sufficient to hold the web still. Therefore is in the knife assembly 4 of FIG. 4 such large adjustment allowed.
  • Fig. 5 shows an embodiment of a knife assembly 4 ', which largely corresponds to that of FIG. 4.
  • the knives 14, 15 are the same size and in the illustration arranged congruent to each other according to Fig. 5a.
  • the adjustment of the knife to each other is advantageously carried out with an eccentric, e.g. at an axial End of the rows of blades is arranged. Since the Adjustment in the millimeter range is one Such adjustment sufficient.
  • Fig. 6 shows a third embodiment in which the same and corresponding parts with the same reference numerals as shown in Figs. 4 and 5 are provided.
  • the knives 14 are not the same size as the knives 15.
  • the knives 15 in the second row have rather a reduced width and a greater distance to each other.
  • the division is different the knife 15 of the pitch of the knife 14. This leaves For example, in the left half of Fig. 6a detect.
  • Fig. 6a shows an operating state in which the knives 15 are completely covered by the blades 14. Accordingly results in the same cutting plan as in Fig. 4a with cuts 18 of the width a and webs 19th the width b.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (9)

  1. Dispositif de coupe pour une bande de matériau, notamment une bande de papier ou de carton, comprenant une traverse rotative (3) sur laquelle est fixée l'agencement de lames de coupe (4) qui présente une première rangée de lames de coupe qui s'étend sur la largeur de la bande de matériau et présente plusieurs lames de coupe (14), qui sont disposées en rangée de manière juxtaposée et espacée les unes des autres, et qui présente une deuxième rangée de lames de coupe (15) dans laquelle sont disposées à distance les unes des autres des deuxièmes lames de coupe (15), caractérisé en ce que la deuxième rangée de lames de coupe (15) peut être déplacée parallèlement à la première rangée de lames de coupe (14) transversalement à la direction d'avance de la bande de matériau.
  2. Dispositif selon la revendication 1, caractérisé en ce que les lames de coupe (14) de la première rangée et les lames de coupe (15) de la deuxième rangée sont respectivement en appui les unes contre les autres.
  3. Dispositif selon la revendication 2, caractérisé en ce que les lames de coupe (14) de la première rangée et les lames de coupe (15) de la deuxième rangée présentent à chaque fois une arête de coupe (16, 17) et les arêtes de coupe (16, 17) sont respectivement en appui l'une contre l'autre.
  4. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'au moins une position de la deuxième rangée peut être ajustée par rapport à la première rangée, dans laquelle toutes les lames de coupe (15) de la deuxième rangée sont recouvertes par les lames de coupe correspondantes (14) de la première rangée.
  5. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les lames de coupe (14) de la première rangée et les lames de coupe (15) de la deuxième rangée présentent à chaque fois la même largeur et la même répartition.
  6. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les lames de coupe (14) de la première rangée sont plus larges que celles de la deuxième rangée et présentent une répartition différente.
  7. Dispositif selon la revendication 6, caractérisé en ce que la distance entre les lames de coupe (15) de la deuxième rangée est plus grande que la distance entre les lames de coupe (14) de la première rangée.
  8. Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les lames de coupe (14, 15) de la première et de la deuxième rangée sont disposées en groupes, un vide (11) subsistant entre les groupes (10), lequel est supérieur à la distance (b) entre les lames de coupe individuelles (14, 15) dans un groupe (10).
  9. Dispositif selon la revendication 8, caractérisé en ce que les lames de coupe (14, 15) coopèrent avec une contre-butée (7) qui présente au moins une entretoise (12) dont la position coïncide avec un vide (11).
EP99124524A 1998-12-18 1999-12-09 Dispositif de coupe ayant un premier et un deuxième alignement d'outils pouvant se déplacer l'un vis-à-vis de l'autre le long de directions parallèles Expired - Lifetime EP1010503B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19858572A DE19858572C1 (de) 1998-12-18 1998-12-18 Schneidvorrichtung
DE19858572 1998-12-18

Publications (3)

Publication Number Publication Date
EP1010503A2 EP1010503A2 (fr) 2000-06-21
EP1010503A3 EP1010503A3 (fr) 2003-04-23
EP1010503B1 true EP1010503B1 (fr) 2005-03-30

Family

ID=7891627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99124524A Expired - Lifetime EP1010503B1 (fr) 1998-12-18 1999-12-09 Dispositif de coupe ayant un premier et un deuxième alignement d'outils pouvant se déplacer l'un vis-à-vis de l'autre le long de directions parallèles

Country Status (2)

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EP (1) EP1010503B1 (fr)
DE (2) DE19858572C1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6838040B2 (en) * 2001-12-28 2005-01-04 Kimberly-Clark Worldwide, Inc. Method for weakening a portion of a web
US7059505B2 (en) 2002-12-02 2006-06-13 Kimberly-Clark Worldwide, Inc. Method and system for breaking a web perforation
CN102002845B (zh) * 2010-11-26 2012-02-29 厦门易凯得工贸有限公司 一种双刀裁剪机
CN104540651B (zh) * 2012-07-19 2017-03-01 福伊特专利有限公司 用于横向分断运行的纤维料幅的裁切设备和方法
MX2015017166A (es) * 2013-06-12 2016-04-06 Procter & Gamble El metodo para perforar una linea de rasgadura no lineal.
CA2915047A1 (fr) * 2013-06-12 2014-12-18 The Proctor & Gamble Company Appareil de perforation pour la fabrication d'une ligne de faiblesse non lineaire
WO2014201072A1 (fr) 2013-06-12 2014-12-18 The Procter & Gamble Company Ligne de faiblesse non-linéaire formée par un appareil de perforation
WO2016148899A1 (fr) 2015-03-17 2016-09-22 The Procter & Gamble Company Appareil de perforation d'un matériau en bande
WO2016148900A1 (fr) 2015-03-17 2016-09-22 The Procter & Gamble Company Appareil permettant de perforer une ligne de moindre résistance non linéaire
WO2016148894A1 (fr) 2015-03-17 2016-09-22 The Procter & Gamble Company Procédé de perforation d'une ligne de faiblesse non linéaire
DE102017112717A1 (de) * 2017-06-09 2018-12-13 Manroland Web Systems Gmbh Perforiermesserleiste
CA3072361A1 (fr) 2017-09-11 2019-03-14 The Procter & Gamble Company Papier hygienique dote une ligne de faiblesse faconnee
US11806889B2 (en) 2017-09-11 2023-11-07 The Procter & Gamble Company Perforating apparatus and method for manufacturing a shaped line of weakness
US11806890B2 (en) 2017-09-11 2023-11-07 The Procter & Gamble Company Perforating apparatus and method for manufacturing a shaped line of weakness

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2266958A (en) * 1939-04-01 1941-12-23 Scott Paper Co Perforated web
GB883410A (en) * 1960-03-08 1961-11-29 Goebel Gmbh Maschf Apparatus for the cross- or dash-line perforation of moving sheets or webs of paper,synthetic resin, or the like
DE4431645A1 (de) * 1994-09-06 1996-03-07 Koenig & Bauer Albert Ag Perforiermesser
JP4035863B2 (ja) * 1997-07-29 2008-01-23 川上産業株式会社 ミシン目加工刃

Also Published As

Publication number Publication date
DE59911840D1 (de) 2005-05-04
EP1010503A2 (fr) 2000-06-21
DE19858572C1 (de) 2000-10-05
EP1010503A3 (fr) 2003-04-23

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