EP2874790B1 - Dispositif de découpage et procédé de sectionnement transversal d'une bande de matière fibreuse en mouvement - Google Patents

Dispositif de découpage et procédé de sectionnement transversal d'une bande de matière fibreuse en mouvement Download PDF

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Publication number
EP2874790B1
EP2874790B1 EP13736801.5A EP13736801A EP2874790B1 EP 2874790 B1 EP2874790 B1 EP 2874790B1 EP 13736801 A EP13736801 A EP 13736801A EP 2874790 B1 EP2874790 B1 EP 2874790B1
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EP
European Patent Office
Prior art keywords
row
knives
web
cuts
perforation
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.)
Active
Application number
EP13736801.5A
Other languages
German (de)
English (en)
Other versions
EP2874790A1 (fr
Inventor
Christian Pringal
Hubert Brand
Michael Schmitz
Marco Peters
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 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
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Publication of EP2874790A1 publication Critical patent/EP2874790A1/fr
Application granted granted Critical
Publication of EP2874790B1 publication Critical patent/EP2874790B1/fr
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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
    • B26F1/20—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material with tools carried by a rotating drum or similar support
    • 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
    • B26F1/06—Perforating by punching, e.g. with relatively-reciprocating punch and bed with punching tools moving with the work
    • B26F1/08—Perforating by punching, e.g. with relatively-reciprocating punch and bed with punching tools moving with the work wherein the tools are carried by, and in operation move relative to, a rotative drum or similar support
    • 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
    • B26F1/14—Punching tools; Punching dies
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/02—Tearing
    • 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
    • B26D7/20—Cutting beds
    • B26D2007/202—Rollers or cylinders being pivoted during operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/10—Methods
    • Y10T225/12—With preliminary weakening
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/483—With cooperating rotary cutter or backup
    • Y10T83/4838—With anvil backup
    • Y10T83/4841—With resilient anvil surface

Definitions

  • the invention relates to a cutting device for perforating a running fibrous web transverse to its web running direction with a first row of knives with a plurality of tips, which is equipped with a displacement device which makes the row of knives movable with a movement component in the web running direction and a movement component perpendicular to the web running direction.
  • the invention further relates to a method for cross-cutting a fibrous web in the direction of web travel in front of or on a finished fibrous web roll, the fibrous web being perforated and then a tensile stress being applied to the fibrous web so that the web tears at the perforation.
  • the web is first cut with the aid of a perforation-type cutting device in such a way that a series of relatively short cuts is made in a row next to one another. Between the short cuts there are webs on which the web still runs. This cut, which can also be called the perforation line, can be made at a certain distance in front of the actual separation point. The actual separation then takes place later by subjecting the material web to increased tensile stress at a specific position. The remaining webs then tear off here.
  • a procedure has the advantage, for example, that the already weakened or perforated material web can still pass through part of a processing device in order, for example, to be provided locally with an adhesive application or to reach a winding position.
  • the object of the invention is therefore to improve the cross-separation by perforation and subsequent tearing, in particular in the case of heavy fibrous webs (> 250 g / mm 2 ).
  • a second row of knives which has several tips and which can also be adjusted by a displacement device, can be used to make perforation cuts in the running fibrous web approximately simultaneously with the first row of knives in such a way that the spacing of the perforation cuts of the first row of cuts and that of the second row of cuts in the direction of web travel is at least 1 mm, preferably at least 3 mm.
  • the said movement component in the direction of web travel should at least correspond to the web speed at least as long as the knife tips are immersed in the web. This results in fine, generally straight cuts across the web running direction, without exerting excessive forces on the tips in the web running direction.
  • This component is particularly preferred in Web direction can be adjusted in order to be able to adapt to different web speeds if necessary.
  • the tips of both rows of knives are not aligned in the majority in the direction of web travel.
  • the perforation cuts of the second row of knives then end roughly where the perforation cuts start the first row of knives.
  • the notch effect can be exploited in such a way that the tear runs in the direction of web travel and connects the ends of the cuts.
  • the torn edge is a little jagged, but this does not cause any problems when winding onto a new winding core or when gluing to the circumference of the finished roll.
  • the rows of knives are preferably arranged such that they are parallel during the perforation of the fibrous web. This ensures that no different tensile forces have to be applied across the web width, which in turn can contribute to the formation of folds.
  • the tips are preferably arranged in a height-adjustable manner on the row of knives. With such an adjustability, the cutting widths of the individual perforation cuts can be made variable in their length.
  • the distance between the rows of knives is adjustable. You can react very well to different fiber web thicknesses.
  • At least one row of knives is preferably arranged on a roller.
  • the row of knives can be rotated into the web via a rotary drive while it touches the circumference of the roller.
  • the knife row is returned to the starting position in a simple manner a 360 ° rotation of the roller.
  • the circumferential speed of the roller can also be easily adjusted to the web speed.
  • other displacement devices such as a lever arm or a four-bar linkage, are not excluded from the scope of protection.
  • an elastic element is provided on which the running fibrous web can be supported and into which at least some knife tips can be immersed when the fibrous web is perforated. This ensures that the running fibrous web is not pushed aside by the knife tips during perforation. The fibrous web is therefore supported, while the knife tips make short cuts.
  • the elastic element is preferably arranged such that it can be moved by a displacement device. Like the knives when immersed in the web, it can be moved on the opposite side of the web.
  • the at least one row of knives and the elastic element preferably run synchronously on the opposite sides of the fibrous web at web speed, at least as long as the knife tips are immersed in the fibrous web and effect the perforation cuts.
  • the elastic element is very particularly preferably formed by a brush. It has been found that such a brush supports the fibrous web very well during cutting, but the knives do not damage the elastic element because they can be immersed between the bristles.
  • the object of the invention is achieved in that the perforation produced by knife tips is in two rows transverse to the fibrous web running direction.
  • the connection cracks caused by the train can be produced more easily and the entire fibrous web can be separated more easily in width. Trying to tear the remaining crossbars of a row of knives is surprisingly much more problematic than creating the cracks from the first row of knives to the second row of knives.
  • the cutting device is preferably used for perforating a running fibrous web according to one of claims (1 to 11).
  • the tension is preferably generated by moving the fibrous web roll roll.
  • the wrap When the wrap is finished, it must be removed from the winder anyway. By ejecting the full winding roll, a tensile stress is automatically generated, which tears the fibrous web at the perforated point. A separate step can thus be saved, which benefits the high number of cycles required.
  • the perforation is particularly preferably designed in such a way that shear stresses, which are decisive for the tearing of the fibrous web, result from the generation of the tensile stress. These shear forces act from the perforation cuts made by the first row of knives first row of cuts to the perforation cuts of the second row of cuts produced by the second row of knives and allow the least effort to separate the web.
  • Fig. 1 shows a roll winding device 1.
  • a roll winding 2 is mounted on two rotatable support rollers 3.1, 3.2.
  • the supplied fibrous web 4 passes through the gap between the support rollers 3.1, 3.2 and is finally wound onto the roll roll 2 driven by the support rollers 3.1, 3.2.
  • the fibrous web passes through the cutting station 10 according to the invention before it is wound up and after it has passed an adjustable guide roller 9.
  • the cutting device 10 is in Fig. 2 shown enlarged. It comprises two displacement devices in the form of rollers 12, 14, between which the fibrous web 4 runs.
  • the first displacement device 12 carries two rows of knives 11.1, 11.2. These have according to the invention a minimum distance of 1 mm, preferably at least 3 mm.
  • the second displacement device 14 (also a roller) carries an elastic element 13. Both rollers 12, 14 can reach a peripheral speed which essentially corresponds to the fiber web speed. Accordingly, the two knife rows 11.1, 11.2 dip in the web running direction 5 while the fibrous web 4 is running and cut them transversely to the web running direction 5.
  • the knives pierce the elastic element 13, which is preferably formed by a brush 18.
  • the rows of knives therefore carry out a movement component in the web running direction (at least approximately the same speed as the fibrous web) and a movement component perpendicular to the web running direction.
  • Fig. 3 the two rows of knives are shown.
  • the second row of knives 11.2 lies behind the first row of knives 11.1.
  • a distance adjusting device 17 of the rows of knives 11.1, 11.2 is indicated by an adjusting screw 19.
  • a height adjustment device 16 of at least one knife tip 15 is realized in this exemplary embodiment.
  • each perforation cut 7 can be defined by the latter height adjustment device 16 of the knife tip 15. This is particularly evident in Fig. 4 , One recognizes the two parallel rows of cuts 6.1, 6.2 with the perforation cuts 7.
  • the webs 8 between the perforation cuts of a row of cuts are short, but they nevertheless offer too high resistance when separating the Fibrous web due to applied tensile stresses. In fact, the web then breaks due to generated shear stresses on connection cracks 22 (one of which is shown as an example). These cracks are very easy to produce due to the resulting shear forces that build up due to the tension in the web and lead to a simple separation of even heavy fibrous web weights. It should be emphasized that the invention can of course also comprise more than two rows of knives 11.1, 11.2.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (14)

  1. Dispositif de coupe (10) destiné à perforer une bande de matière fibreuse continue (4) transversalement à sa direction de défilement de bande (5), ledit dispositif de coupe comprenant une première rangée de couteaux (11.1), pourvue d'une pluralité de pointes (15), qui est équipée au moyen d'un dispositif de déplacement (12) qui peut déplacer la rangée de couteaux (11.1) avec une composante de mouvement dans la direction de défilement de bande (5) et une composante de mouvement perpendiculaire à la direction de défilement de bande (5), des perforations (7) pouvant être ménagées dans la bande de matière fibreuse continue (4) par une deuxième rangée de couteaux (11.2), qui dispose d'une pluralité de pointes (15) et qui peut également être déplacée par le biais d'un dispositif de déplacement (12), à peu près en même temps que la première rangée de couteaux (11.1) de telle sorte que la distance entre les perforations (7) de la première rangée de découpe (6.1) et celle de la deuxième rangée de découpe (6.2) dans la direction de défilement de bande (5) soit d'au moins 1 mm, de préférence d'au moins 3 mm, caractérisé en ce que les pointes (15) des deux rangées de couteaux (11.1, 11.2) ne sont pas alignées pour la plupart d'entre elles dans la direction de défilement (5).
  2. Dispositif de coupe (10) selon la revendication 1, caractérisé en ce que les perforations (7) de la deuxième rangée de découpe (6.2) recouvrent les nervures (8) restant entre les perforations (7) de la première rangée de découpe (6.1).
  3. Dispositif de coupe (10) selon l'une des revendications 1 ou 2, caractérisé en ce que les rangées de couteaux (11.1, 11.2) sont disposées de manière à être parallèles lors de la perforation de la bande de matière fibreuse (4).
  4. Dispositif de coupe (10) selon l'une des revendications 1 à 3, caractérisé en ce qu'un seul dispositif de déplacement (12) est présent pour la première rangée de couteaux (11.1) et la deuxième rangée de couteaux (11.2).
  5. Dispositif de coupe (10) selon l'une des revendications 1 à 4, caractérisé en ce que les pointes (15) sont disposées de manière réglable en hauteur sur la rangée de couteaux (11.1, 11.2).
  6. Dispositif de coupe (10) selon l'une des revendications 1 à 5, caractérisé en ce que la distance entre les rangées de couteaux (11.1, 11.2) est réglable.
  7. Dispositif de coupe (10) selon l'une des revendications 1 à 6, caractérisé en ce qu'au moins une rangée de couteaux (11.1, 11.2) est disposée sur un rouleau (12).
  8. Dispositif de coupe (10) selon l'une des revendications 1 à 7, caractérisé en ce qu'un élément élastique (13) est prévu sur lequel la bande de matière fibreuse continue (4) peut s'appuyer et dans lequel au moins quelques pointes de couteau (15) peuvent pénétrer dans la perforation de la bande de matière fibreuse (4).
  9. Dispositif de coupe (10) selon la revendication 8, caractérisé en ce que l'élément élastique (13) est disposé de manière à pouvoir être déplacé par un dispositif de déplacement (14).
  10. Dispositif de coupe (10) selon la revendication 8 ou 9, caractérisé en ce que l'élément élastique (13) est formé par une brosse (18).
  11. Procédé de coupe transversale d'une bande de matière fibreuse (4) dans la direction de défilement de bande avant un rouleau de bande de matière fibreuse fini (2) ou au niveau de celui-ci, la bande de matière fibreuse (4) étant perforée puis une contrainte de traction étant appliquée sur la bande de matière fibreuse (4) de sorte que la bande de matière fibreuse (4) se déchire au niveau des perforations, caractérisée en ce que les perforations réalisées par les pointes de couteau (15) sont sur deux rangées (6.1, 6.2) transversalement à la direction de la bande de matière fibreuse (5), la distance entre les perforations (7) de la première rangée de découpe (6.1) et celle de la deuxième rangée de découpe (6.2) dans la direction de défilement de bande (5) étant d'au moins 1 mm, de préférence d'au moins 3 mm.
  12. Procédé selon la revendication 11, caractérisé en ce que les perforations sont réalisées par un dispositif de coupe (10) selon l'une des revendications 1 à 11.
  13. Procédé selon l'une des revendications 11 ou 12, caractérisé en ce que la contrainte de traction est générée par déplacement du rouleau de bande de matière fibreuse (2).
  14. Procédé selon l'une des revendications 11 à 13, caractérisé en ce que les perforations sont formées de telle sorte que des contraintes de cisaillement, qui sont déterminantes pour la déchirure de la bande de matière fibreuse (4), sont obtenues par génération de la contrainte de traction.
EP13736801.5A 2012-07-19 2013-06-21 Dispositif de découpage et procédé de sectionnement transversal d'une bande de matière fibreuse en mouvement Active EP2874790B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012212656 2012-07-19
PCT/EP2013/063002 WO2014012743A1 (fr) 2012-07-19 2013-06-21 Dispositif de découpage et procédé de sectionnement transversal d'une bande de matière fibreuse en mouvement

Publications (2)

Publication Number Publication Date
EP2874790A1 EP2874790A1 (fr) 2015-05-27
EP2874790B1 true EP2874790B1 (fr) 2020-02-26

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EP13736801.5A Active EP2874790B1 (fr) 2012-07-19 2013-06-21 Dispositif de découpage et procédé de sectionnement transversal d'une bande de matière fibreuse en mouvement

Country Status (4)

Country Link
US (1) US20150165635A1 (fr)
EP (1) EP2874790B1 (fr)
CN (1) CN104540651B (fr)
WO (1) WO2014012743A1 (fr)

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CN203768712U (zh) * 2013-11-08 2014-08-13 株式会社瑞光 织物切断装置
US10330449B2 (en) * 2015-07-24 2019-06-25 Raytheon Company Dispenser and dispensing system for radar jamming material
CN105248010A (zh) * 2015-09-23 2016-01-20 界首市鲜天下家庭农场 一种黄瓜种子的催芽方法
DE102020130360A1 (de) 2020-11-17 2022-05-19 Manroland Goss Web Systems Gmbh Messerzylinder und Messerbalken

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Also Published As

Publication number Publication date
CN104540651B (zh) 2017-03-01
CN104540651A (zh) 2015-04-22
EP2874790A1 (fr) 2015-05-27
US20150165635A1 (en) 2015-06-18
WO2014012743A1 (fr) 2014-01-23

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