EP3209470A1 - Dispositif de découpe au jet d'eau - Google Patents

Dispositif de découpe au jet d'eau

Info

Publication number
EP3209470A1
EP3209470A1 EP15771144.1A EP15771144A EP3209470A1 EP 3209470 A1 EP3209470 A1 EP 3209470A1 EP 15771144 A EP15771144 A EP 15771144A EP 3209470 A1 EP3209470 A1 EP 3209470A1
Authority
EP
European Patent Office
Prior art keywords
water jet
cutting device
cutting table
removable plate
jet 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.)
Granted
Application number
EP15771144.1A
Other languages
German (de)
English (en)
Other versions
EP3209470B1 (fr
Inventor
Michael Lohrmann
Daniel Kather
Malte Müller
Lutz-Thomas HERMANN
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
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP3209470A1 publication Critical patent/EP3209470A1/fr
Application granted granted Critical
Publication of EP3209470B1 publication Critical patent/EP3209470B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
    • 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
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
    • B26F3/008—Energy dissipating devices therefor, e.g. catchers; Supporting beds therefor

Definitions

  • the invention relates to a water jet cutting device for separating a strip from a running paper, board, tissue or another fibrous web, preferably a machine for producing and / or finishing the same, in particular according to claim 1.
  • Such separation devices have been in use for a long time.
  • a water jet is generated, which separates the fibrous web.
  • a water jet collecting device is provided, which is usually associated with a cutting table. On the cutting table to be separated and moved past this fibrous web is supported. For safety reasons, but also to protect against contamination, the water jet is thereby, after he has severed the fibrous web, taken up by the water jet collecting device.
  • the cutting table has for this purpose a collecting opening for the water jet. The latter, viewed in the direction of the application of the water after it has severed the fibrous web, passes through the collecting opening. The remaining energy of the water jet is absorbed by the water jet catcher. The latter also serves to catch the water of the water jet and supply it to a corresponding device for its reprocessing.
  • the collecting openings of the water jet collecting device are chosen to be relatively large, which, however, brings problems with regard to a sufficient support of the fibrous web in the cutting area and thus damage to the web edge.
  • the relatively large collecting openings require even relatively large cutting tables. A removal and installation of such a relatively large cutting table is connected in case of wear with relatively great effort. Often is for the installation and removal of special tools necessary. Since such a change of the cutting table is possible only at a standstill of an aforementioned machine, this is reflected in comparatively high downtime and costs.
  • the present invention relates to the aforementioned generic objects.
  • the present invention has for its object to provide a water jet cutting device of the type mentioned, with which the aforementioned problems can be eliminated in the simplest and most reliable way.
  • Distance in the sense of the invention may mean the smallest distance between the water jet (or its lateral surface) and (the lateral surface) of the boundary of the collecting opening. It can be measured in the plane parallel to the cutting table or the fibrous web which can be moved over it or a plane running parallel thereto. It can - in this level - preferably be on all sides of the water jet a maximum of 10 mm. Alternatively, the distance can also be described as follows: In a plan view of the cutting table-viewed in the direction of the ejection of the water jet-the projection of the outer contour of the water jet (or its lateral surface) results on the cutting table (or a plane parallel thereto). a theoretical impact surface of the water jet on the blasting table.
  • this incident surface is formed by all superimposed projections of the water jet along all positions of the water jet in the cutting direction and / or the cutting path traveled by the water jet.
  • said incident surface is always concentric with the surface, which is formed by the boundary of the collecting opening (hereinafter Aufffang Structure called).
  • Concentric Aufffang Structure and impact surface are when whose axes of symmetry coincide, but the surfaces are not the same surface, but the boundary contours are different in size.
  • the above-mentioned distance in this case is the distance that form the two boundary contours to each other in the above plan view, Favor to all sides.
  • the said distance corresponds to the gap between the water jet and the collecting opening.
  • the small expansion of the collecting opening compared to the expansion of the water jet brings an improved support of the fibrous web during cutting. Because the fibrous web is better supported in the cutting area. Damage to the edge of the web is thereby minimized. Overall, then a clean cut of the fibrous web or the strip to be separated to be achieved.
  • the collecting opening of the cutting table can also be produced by the water jet cutting device, more precisely by the water jet itself. In other words, this means that the Auffango réelle is still closed before the first impact of the water jet.
  • the material thickness of the water jet collecting device should be so low around the collecting opening and / or the material of the water jet collecting device to the embarkfango réelle be such that it - preferably in the intended Operation of the water jet cutting device - can be severed by the water jet.
  • the water jet cutting device is set up in such a way that, at least in the short term, it is capable of severing both the fibrous web and of being able to produce the receiving opening in the cutting table.
  • the water jet cutting device could be configured such that the pressure of the water jet for the first time creation of the collecting opening in the cutting table at least briefly above the cutting pressure to a separation pressure could be raised. The material or the thickness of the cutting table could then be selected such that it would be severable above the cutting pressure to separation pressure by means of the water jet to create the collecting opening.
  • the water jet cutting device could be associated with a pressure source which could be connected to the nozzle in a flow-conducting manner by means of a pressure line.
  • a pressure adjusting valve could be provided by means of which the pressure of the nozzle supplied water, so the pressure of the water jet would be adjustable.
  • the pressure could be raised by the pressure adjusting valve for a short time on the separation pressure to create the collecting opening in the cutting table - especially outside the intended operation of the water jet cutting device. After creating the collection opening in the cutting table, the pressure could be reset to cutting pressure.
  • the collecting opening is produced by the same for the first time.
  • This first-time production of the collecting opening has the advantage that no close tolerances with regard to the spacing of the nozzle or of the water jet emerging therefrom must be maintained to an already existing collecting opening in the cutting table.
  • the present invention relates to a corresponding method for producing a collecting opening in such a water jet cutting device with the steps just described.
  • the water jet cutting device in addition to the pressure source, could also be assigned a treatment device by means of which the water collected by the water jet collecting device could be cleaned by the fibers of the fibrous web entrained therein.
  • the removable plate In normal use, the removable plate is inserted into the cutting table and the detachable connection is closed, so that the cutting plate is held securely or captive in the cutting table.
  • holding means are preferably understood to be functioning, releasable connections according to the mode of action of the force and / or form fit, such as e.g. Clamping, sliding, snap connections. But bolt or screw connections or fits fall under this.
  • Locking means such means are understood by means of which the retaining means are secured against unintentional release of the connection in normal operation. Locking means are therefore arranged such that they cause a bias or biasing force on the retaining means in the closing direction - ie opposite to an opposite opening direction - the releasable connection.
  • An example of this are springs that brace the holding means against each other (in the closing direction) such that, for example, the at least one projection does not come out of the at least one recess (in the opening direction). If there is talk of the fact that the connection between the removable plate and cutting table is releasable and connectable free of tools, it is meant that this is releasable by hand and closed again by hand.
  • the water jet cutting device can be set up such that the force which is necessary to release the detachable connection and / or close, is dimensioned such that this force can still be applied by hand.
  • coplanar means that two or more surfaces (or upper sides) are arranged in space relative to one another (permanently), that they coincide or are flush with one another.
  • the collecting opening is formed by a separate, exchangeable removable plate of the cutting table. The removable disk can be exchanged so quickly on the one hand in wear and on the other hand, especially adapted to the requirements of their use in particular with regard to wear, susceptibility to contamination and size of the collecting opening.
  • the symmetrical outer contour may be axially symmetrical about the longitudinal axis and / or transverse axis of the removable disk.
  • longitudinal axis and / or transverse axis the respective central axis is meant.
  • the longitudinal axis describes the direction of the spatial length
  • the transverse axis the direction of the spatial width of the removable plate.
  • the replacement plate may be arranged in the cutting table such that its longitudinal or transverse axis runs parallel to the running direction of the fibrous web or the cutting direction.
  • the cutting table may have a length or the width in the range between 50 and 200 mm and a thickness between 1 and 30 mm.
  • the removable disk may be smaller in length and width than the cutting table. However, it can also have a thickness between 1 and 30 mm.
  • the symmetry mentioned has the following advantage: For example, if the top of the removable disk is severely worn, it can be solved by solving the invention Connection taken from the cutting table, (rotated about its longitudinal axis and / or transverse axis) and used to make the connection back into the cutting table. The new top is now formed by the actual back.
  • the replacement plate in the region of the collecting opening comprises an insert made of a wear-resistant and contamination-resistant material.
  • This may itself be releasably connectable to the removable plate, e.g. be held in force, form and / or cohesively in this. Because if the use contaminates or wears, usually only this, but not the removable plate must be replaced.
  • the distance between the nozzle and the water jet collecting device or the cutting table could be less than 10 mm.
  • the smallest distance could be meant, which results between an outer, for example, the water jet catcher or the cutting table side facing the nozzle and a corresponding, the nozzle facing side of the water jet collecting device and the cutting table.
  • the longitudinal axis of the nozzle is ideally parallel to the z axis or coincides with this.
  • the distance would then be the (smallest) distance measured in the z-axis direction between a side of the nozzle facing the water jet catching device or the cutting table and the corresponding side of the water jet catching device or the cutting table facing the nozzle. If the longitudinal axis of the nozzle is at an angle to the z-axis, the distance could be measured along an extension of the longitudinal axis of the nozzle.
  • the side of the nozzle facing the water jet collecting device or the cutting table may be that side of the nozzle which delimits or forms a nozzle outlet for the water jet into the environment.
  • the small distance of less than 10 mm also has the advantage that on the one hand the quality of the cut and on the other hand the risk of accidents due to the small distances are low. In the latter case, the likelihood that the operator places his fingers there is reduced.
  • the invention also relates to an aforementioned machine for producing and / or finishing a moving fibrous web, such as paper, cardboard, tissue or another with a water jet cutting device according to the invention. Furthermore, the invention also relates to a use of a water jet cutting device according to the invention in such a machine.
  • Figure 1 is a highly schematic representation of a device in a partially sectioned side view perpendicular to a direction of the fibrous web to be separated according to a first embodiment
  • Figure 2 is a highly schematic representation of a device in a partially sectioned view in the direction of the fibrous web to be separated according to a second embodiment
  • a strip such as marginal strips, is separated from a fibrous web 1 via a water jet 4 having a comparatively high pressure.
  • the edge strip can be separated parallel to the edge of the fibrous web 1 continuously from this. It can be removed to produce clean web edges, but also be required for the transfer of the fibrous web 1.
  • the fibrous web 1 here in the form of a running Paper web within a paper machine, for example, at a speed between 200 and 2,500 m / min on the water jet cutting device in the direction (indicated by the arrow) along.
  • the fibrous web 1 is supported at least in sections directly on a cutting table 2.
  • the water jet cutting device in each case has at least one nozzle 3, which directs a water jet 4 onto the fibrous web 1 for its separation into an edge strip.
  • the nozzle 3 can be connected in a flow-conducting manner to a pressure source (not shown), which may be associated with the water jet cutting device, via a pressure line.
  • the water jet 4 is received on the side of the fibrous web 1 opposite the nozzle 3 by a water-jet collecting device 5.
  • the cutting table 2 may be associated with the water jet collecting device 5 or, as shown, are formed directly from this. Seen in the direction of the application of the water jet, the water jet 4 first strikes the fibrous web 1 and then passes through a collecting opening 6 in the cutting table 2 into the interior of the water jet collecting device 5.
  • the water jet cutting device of Figure 1 is designed such that the nozzle 3 and water jet collecting device 5 and cutting table 2 are stationary to each other, so do not move relative to each other.
  • the illustration shows the water jet cutting device in side view, so that the fibrous web 1 moves from left to right past the water jet cutting device.
  • the water jet cutting device could then be set up such that water jet collecting device 5 and cutting table 2 move together relative to the fibrous web 2 in order to be able to set a predetermined width of the edge strip to be separated.
  • Such a movement can take place in the cutting direction, for example, perpendicular to the running direction of the fibrous web 2 - as seen in FIG. 1, for example, in the direction of the plane of the drawing.
  • the water jet 4 is substantially circular in its cross section, the result is a collecting opening 6, the is also substantially circular. It is then a corresponding through hole.
  • the nozzle 3 is movable relative to the water-jet collecting device 5 or the cutting table 2 fixed here.
  • the fibrous web 1 moves relative to the fixed water-jet collecting device 5 (or to the cutting table 2) into the plane of the drawing.
  • the movement of the nozzle relative to the water jet collecting device 5 is in this case a purely translational. It is, as in Figure 1, perpendicular to the direction, ie in the width direction of the fibrous web. 1
  • the collecting opening 6 can extend over part or the entire width of the fibrous web 1 to be produced by the paper machine.
  • the water jet cutting device can be set up such that the cutting path essentially corresponds to the width of the fibrous web 1. If the water jet 4 is substantially circular in its cross section, then the collecting opening 6 is a continuous oblong hole.
  • FIGS. 1 and 2 have in common that the collecting opening 6 is formed by a separate, exchangeable exchangeable plate 8 of the cutting table 2.
  • This replacement plate 8 may for example be made of a wear-resistant and / or pollution-resistant material, such as plastic.
  • the removable plate 8 is formed separately from the cutting table 2. It is by means of a detachable connection of this non-destructive separable and not connectable with this.
  • the water jet cutting device is set up such that the upper side of the removable plate 8 and the upper side of the cutting table 2 are substantially coplanar. This prevents again dirt deposits on the removable plate 8 and reduces the risk of breaking the fibrous web 1 at this point.
  • FIG. 3 shows an enlarged and partially sectioned spatial representation of a connection of the exchangeable plate 8 and the cutting table 2.
  • a replaceable plate 8 could be used in the objects illustrated in FIGS. 1 and 2.
  • the collecting opening 6 is designed as a circle in accordance with FIG.
  • the releasable connection may comprise holding means, here in the form of exactly two projections 9.
  • the projections 9 are formed in the present example of the cutting table 2, more precisely one of its end faces. However, they do not have to be one-piece, but could also be designed separately from one another.
  • the projections 9 are here designed such that they engage in corresponding recesses 10, which engage a corresponding, the cutting table facing front side of the removable plate 8.
  • protrusions 9 and recesses 10 shown here could be provided. Also, these could be attached to other than the positions shown.
  • the recesses 10 may be incorporated in the cutting table 2, whereas the projections 9, for example, formed integrally with the removable plate 8 or could be provided separately thereto.
  • retaining means that is to say the projections 9 and recesses 10, are axisymmetric with respect to a longitudinal axis L or to a transverse axis Q (or to both axes L and Q).
  • the two axes L and Q can represent corresponding center or symmetry axes of the removable plate 8. Because the top of the removable plate 8 is severely worn, it can be removed by loosening the compound of the invention from the cutting table 2, rotated about its longitudinal axis L and / or transverse axis Q and used to make the connection back into the cutting table 2. The new top is now formed by the actual back of the removable disk 8. To remove the removable plate 8, this is in the opening direction, here e.g.
  • the replacement plate 8 may be arranged in the cutting table 2 such that the fibrous web 1 relatively moves past the cutting table 2 in the longitudinal direction L. If the nozzle 3, as stated with reference to FIG. 3, has a relatively movable design, then the cutting path of the water jet shown in FIG. 3 can run parallel to the transverse axis Q.
  • the locking means may be associated with a locking means to protect the removable plate 8 against accidental release from the cutting table 2 during normal operation of the water jet cutting device.
  • a locking means may exert a force on e.g. Carry out the removable plate 8 in the direction of the closing direction. This can e.g. done by means of a spring.
  • the fibrous web 1 can represent a locking means in this sense.
  • the removable plate 8 and preferably the holding means are arranged such that the relative thereto in the direction of moving past the fibrous web 1 and the closing direction of the releasable connection coincide. An accidental release of the connection between the cutting table 2 and the removable plate 8 is then prevented by the passing fibrous web 1.
  • the removable plate 8 may be assigned to the collecting opening 6 an insert 1 1.
  • the latter may be integrally or releasably connected to the removable plate 8. Its surface - or the insert 1 1 itself - may consist of a wear-resistant and contamination-resistant material (see the hatched area in Figure 3).
  • the receiving opening 6 can be designed as small as possible.
  • the distance between the collecting opening 6 and the water jet 4 on all sides of the collecting opening 6 in a plane parallel to the cutting table 2 and the fibrous web 1 can be a maximum of 10 mm.
  • the collection opening 6 thus produced is hardly wider than the water jet 4, which has a comprehensive support of the fibrous web 1 result.
  • the leakage of spray from the water jet collecting device 5 can be greatly reduced.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Catching Or Destruction (AREA)

Abstract

L'invention concerne un dispositif de découpe au jet d'eau servant à séparer un ruban d'une bande de matériau fibreux (1) en mouvement, comprenant : au moins une buse (3) pouvant être alimentée en eau et servant à produire un jet d'eau (4), ladite buse (3) étant conçue de façon à permettre de diriger le jet d'eau (4) sur la bande de matériau fibreux (1) ; un dispositif récepteur de jet d'eau (5) auquel est associée une table de coupe (2) destinée à soutenir au moins dans certaines zones la bande de matériau fibreux (1). La table de coupe (2) forme ou délimite une ouverture réceptrice (6) pour le jet d'eau (4) lors du fonctionnement conforme aux spécifications du dispositif de découpe au jet d'eau. L'ouverture réceptrice (6) est formée par une plaque interchangeable séparée (8) de la table de coupe (2), pouvant être raccordée de manière libérable à cette dernière.
EP15771144.1A 2014-10-24 2015-09-30 Dispositif de découpe au jet d'eau Not-in-force EP3209470B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014221644 2014-10-24
PCT/EP2015/072563 WO2016062509A1 (fr) 2014-10-24 2015-09-30 Dispositif de découpe au jet d'eau

Publications (2)

Publication Number Publication Date
EP3209470A1 true EP3209470A1 (fr) 2017-08-30
EP3209470B1 EP3209470B1 (fr) 2019-01-23

Family

ID=54199692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15771144.1A Not-in-force EP3209470B1 (fr) 2014-10-24 2015-09-30 Dispositif de découpe au jet d'eau

Country Status (4)

Country Link
EP (1) EP3209470B1 (fr)
CN (1) CN107073738A (fr)
CA (1) CA2965557C (fr)
WO (2) WO2016062508A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107244003A (zh) * 2017-07-20 2017-10-13 苏州晓炎自动化设备有限公司 一种汽车天窗玻璃用的切割机
CN111015826A (zh) * 2019-12-04 2020-04-17 合肥博克斯医疗科技有限公司 医疗器械盒生产用硅胶支架加工方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4651476A (en) * 1986-05-07 1987-03-24 Flow Systems, Inc. Compact receptacle with automatic feed for dissipating a high-velocity fluid jet
DE8710495U1 (de) * 1987-07-31 1987-10-01 G. Siempelkamp GmbH & Co.KG, 47803 Krefeld Vorrichtung zum Formattrennen und Längsbesäumen einer Preßgutmatte
AU2399288A (en) * 1987-11-30 1989-06-01 Flow Systems Inc. Energy-dissipating receptacle for high velocity fluid jet
US5269211A (en) * 1992-02-28 1993-12-14 Flaming Max L Method and apparatus for severing work objects
DE10017288A1 (de) * 2000-04-06 2001-10-31 Koenig & Bauer Ag Vorrichtung zum Schneiden von Papierbahnen
SG121700A1 (en) * 2001-12-28 2006-05-26 Jetsis Int Pte Ltd A method and related apparatus for cutting a product from a sheet material
DE102005018769A1 (de) * 2005-04-22 2006-10-26 Voith Patent Gmbh Schneideinrichtung
JP5063908B2 (ja) * 2006-03-20 2012-10-31 Ｔｏｗａ株式会社 アブレイシブウォータージェットによる切断装置
JP2009045718A (ja) * 2007-08-22 2009-03-05 Kid:Kk ワーク加工方法及びワーク支持装置
US20100064870A1 (en) * 2008-09-18 2010-03-18 Omax Corporation Fluid jet cutting system with bed slat caps
JP5000019B1 (ja) * 2011-07-05 2012-08-15 一徳 飯盛 反射鏡、及び当該反射鏡の加工方法
ES2435394B1 (es) * 2012-05-21 2014-09-10 Urtasun Tecnologia Alimentaria, S.L. Maquina para formar bloques de productos vegetales
US9358668B2 (en) * 2012-07-19 2016-06-07 Ascent Aerospace, Llc Fluid jet receiving receptacles and related fluid jet cutting systems

Also Published As

Publication number Publication date
CA2965557C (fr) 2018-07-31
EP3209470B1 (fr) 2019-01-23
CN107073738A (zh) 2017-08-18
WO2016062508A1 (fr) 2016-04-28
WO2016062509A1 (fr) 2016-04-28
CA2965557A1 (fr) 2016-04-28

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