EP1010503B1 - Schneidvorrichtung mit einer ersten und einer zweiten Messerreihe, die parallel zueinander verschiebbar sind - Google Patents
Schneidvorrichtung mit einer ersten und einer zweiten Messerreihe, die parallel zueinander verschiebbar sind Download PDFInfo
- 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
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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)
Description
- Fig. 1
- eine schematische Seitenansicht einer Schneidvorrichtung,
- Fig. 2
- eine Ansicht aus Richtung A nach Fig. 1,
- Fig. 3
- eine vergrößerte Ansicht eines Details B nach Fig. 1,
- Fig. 4
- eine schematische Seitenansicht und Schneidplan eines ersten Ausführungsbeispiels einer Messeranordnung in verschiedenen Betriebszuständen,
- Fig. 5
- eine schematische Seitenansicht und Schneidplan einer zweiten Messeranordnung in verschiedenen Betriebszuständen und
- Fig. 6
- eine schematische Seitenansicht und Schneidplan einer dritten Messeranordnung in verschiedenen Betriebszuständen.
Claims (9)
- Schneidvorrichtung für eine Warenbahn, insbesondere eine Papier- oder Kartonbahn, mit einer Drehtraverse (3), an der eine Messeranordnung (4) befestigt ist, die eine erste Messerreihe, die sich über die Breite der Warenbahn erstreckt und mehrere Messer (14) aufweist, die mit Abstand zueinander in einer Reihe nebeneinander angeordnet sind, und eine zweite Reihe von Messern (15) aufweist, in der zweite Messer (15) mit Abstand zueinander angeordnet sind, dadurch gekennzeichnet, daß die zweite Reihe von Messern (15) parallel zur ersten Reihe von Messern (14) quer zur Laufrichtung der Warenbahn verschiebbar ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Messer (14) der ersten Reihe und die Messer (15) der zweiten Reihe jeweils aneinander anliegen.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Messer (14) der ersten Reihe und die Messer (15) der zweiten Reihe jeweils eine Schneidkante (16, 17) aufweisen und die Schneidkanten (16, 17) jeweils aneinander anliegen.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß mindestens eine Position der zweiten Reihe relativ zur ersten Reihe einstellbar ist, in der alle Messer (15) der zweiten Reihe von den entsprechenden Messern (14) der ersten Reihe abgedeckt sind.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Messer (14) der ersten Reihe und die Messer (15) der zweiten Reihe jeweils die gleiche Breite und die gleiche Teilung aufweisen.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Messer (14) der ersten Reihe breiter als die der zweiten Reihe sind und eine andere Teilung aufweisen.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß der Abstand der Messer (15) der zweiten Reihe größer als der Abstand der Messer (14) der ersten Reihe ist.
- Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Messer (14, 15) der ersten und der zweiten Reihe gruppenweise angeordnet sind, wobei zwischen Gruppen (10) eine Lücke (11) verbleibt, die größer ist als der Abstand (b) der einzelnen Messer (14, 15) in einer Gruppe (10).
- Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Messer (14, 15) mit einem Gegenhalter (7) zusammenwirken, der mindestens eine Verstrebung (12) aufweist, deren Position mit einer Lücke (11) übereinstimmt.
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 (de) | 2000-06-21 |
EP1010503A3 EP1010503A3 (de) | 2003-04-23 |
EP1010503B1 true EP1010503B1 (de) | 2005-03-30 |
Family
ID=7891627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99124524A Expired - Lifetime EP1010503B1 (de) | 1998-12-18 | 1999-12-09 | Schneidvorrichtung mit einer ersten und einer zweiten Messerreihe, die parallel zueinander verschiebbar sind |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1010503B1 (de) |
DE (2) | DE19858572C1 (de) |
Families Citing this family (14)
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 |
US20150165635A1 (en) | 2012-07-19 | 2015-06-18 | Voith Patent Gmbh | Cutting device and method for cross-cutting a moving fiber web |
WO2014201072A1 (en) | 2013-06-12 | 2014-12-18 | The Procter & Gamble Company | A nonlinear line of weakness formed by a perforating apparatus |
MX2015017171A (es) * | 2013-06-12 | 2016-03-16 | Procter & Gamble | Un aparato de perforacion para fabricar una linea de rasgadura no lineal. |
MX2015017166A (es) * | 2013-06-12 | 2016-04-06 | Procter & Gamble | El metodo para perforar una linea de rasgadura no lineal. |
WO2016148894A1 (en) | 2015-03-17 | 2016-09-22 | The Procter & Gamble Company | Method for perforating a nonlinear line of weakness |
WO2016148900A1 (en) | 2015-03-17 | 2016-09-22 | The Procter & Gamble Company | Apparatus for perforating a nonlinear line of weakness |
WO2016148899A1 (en) | 2015-03-17 | 2016-09-22 | The Procter & Gamble Company | Apparatus for perforating a web material |
DE102017112717A1 (de) * | 2017-06-09 | 2018-12-13 | Manroland Web Systems Gmbh | Perforiermesserleiste |
US11806889B2 (en) | 2017-09-11 | 2023-11-07 | The Procter & Gamble Company | Perforating apparatus and method for manufacturing a shaped line of weakness |
US11180892B2 (en) | 2017-09-11 | 2021-11-23 | The Procter & Gamble Company | Sanitary tissue product with 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)
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 |
-
1998
- 1998-12-18 DE DE19858572A patent/DE19858572C1/de not_active Expired - Fee Related
-
1999
- 1999-12-09 DE DE59911840T patent/DE59911840D1/de not_active Expired - Fee Related
- 1999-12-09 EP EP99124524A patent/EP1010503B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE19858572C1 (de) | 2000-10-05 |
EP1010503A3 (de) | 2003-04-23 |
EP1010503A2 (de) | 2000-06-21 |
DE59911840D1 (de) | 2005-05-04 |
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