EP0897889A1 - Appareil de coup en pointe - Google Patents

Appareil de coup en pointe Download PDF

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Publication number
EP0897889A1
EP0897889A1 EP98115113A EP98115113A EP0897889A1 EP 0897889 A1 EP0897889 A1 EP 0897889A1 EP 98115113 A EP98115113 A EP 98115113A EP 98115113 A EP98115113 A EP 98115113A EP 0897889 A1 EP0897889 A1 EP 0897889A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
material web
web
jet
drying cylinder
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
EP98115113A
Other languages
German (de)
English (en)
Other versions
EP0897889B1 (fr
Inventor
Karlheinz Straub
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 Sulzer Papiermaschinen 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 Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0897889A1 publication Critical patent/EP0897889A1/fr
Application granted granted Critical
Publication of EP0897889B1 publication Critical patent/EP0897889B1/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
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers

Definitions

  • the invention relates to a tip cutter for a machine for producing a material web, in particular paper or cardboard web, according to the preamble of claim 1.
  • the threading strip is used after a demolition Material web or after starting up the machine from the new one entering the machine respectively Material web still present in the machine to cut a so-called threading strip.
  • the threading strip the width of which is essential is less than the width of the remaining web threaded through the machine while the Remaining web is usually recycled becomes.
  • the tip cutter becomes crosswise shifted to the direction of travel of the material web, that the threading strip becomes wider and wider until finally the entire web of material through the machine passed.
  • the well-known lace cutters have the disadvantage that the emerging from the nozzle In many cases, the jet jet is cut off Threading strips so moistened that this can no longer be continued safely.
  • a tailor is used to solve this task proposed that mentioned in claim 1 Features. This is characterized by it from that the nozzle opposite one in the direction of travel the straight line running at an angle ⁇ is inclined, which is in a range of 0 ° ⁇ ⁇ 45 °, preferably from 10 ° to 30 °.
  • the jet strikes it at an acute angle on the circumference of the roller, for example a drying cylinder or a web guide roller Material web on, being due to the inclination of the nozzle opposite to that running in the running direction of the web
  • the liquid reflected by the material web at least essentially, preferably exclusively, only moistened the remaining web.
  • the nozzle diameter 0.05 mm to 0.3 mm, preferably 0.08 mm to Is 0.2 mm. This can reduce fluid consumption of the tip cutter kept very low which reduces the operating costs of the machine can be.
  • the degraded Amount of fluid becomes less fluid from the Material web reflects, so that it is still ensured can be that the moisture content of the Threading strip after separation from the material web at least essentially the moisture content before disconnection.
  • the diameter the nozzle can vary depending on the basis weight the material web can be selected.
  • Figure 1 shows a highly schematic part of a Machine 1 for producing a material web 3, namely a drying cylinder 5 around which the material web 3 together with one also as a dryer fabric or felt designated conveyor belt 7 out becomes.
  • the drying cylinder 5 is part of at least one a dryer section comprising a drying section the machine 1.
  • the material web 3, for example a paper web is over a circumferential area of the Drying cylinder 5 between this and the conveyor belt 7 led.
  • the conveyor belt 7 lifted from the drying cylinder 5 and around a deflection roller 9 returned to the beginning of the drying group.
  • the material web 3 is thus over a Circumferential area of the drying cylinder 5 without that Conveyor belt 7 out.
  • the material web 3 is from the drying cylinder 5 to a web guide roller 11 led and arrives from this in the following Part of the machine 1.
  • a tip cutter 19 arranged of a nozzle device 21 has.
  • the nozzle device 21 is along a extending transversely to the direction of travel (arrow 25) Support beam 27 slidably mounted.
  • the web of material 3 is torn off with its entire web Width led to the drying cylinder 5.
  • the material web 3 is around the drying cylinder 5 led around, by means of a scraper 29 from the Detached outer surface of the drying cylinder 5 and - as indicated by dashed lines - towards one Arrow 31 led into the basement of machine 1.
  • the nozzle device 21 is activated and the jet 23 on the circumference of the drying cylinder 5 lying material web 3 directed. Of the Nozzle jet 23 separates the threading strip that by means of an example here on the scraper 29 attached blowing device 33 to the web guide roller 11 is transferred. Then the threading strip passed through the machine 1, while the rest of the track continues down to the basement.
  • the threading strip By moving the nozzle device 21 along of the support beam 27, that is transverse to the direction of travel the material web 3, the threading strip is always wider until finally the entire material web 3 over the web guide roller 11 and further through the machine 1 is performed.
  • the nozzle If the nozzle is inclined in such a way that the jet 23 at the 36th strikes and one in the running direction of the material web 3 has directional speed component, becomes the angle ⁇ with a positive sign Mistake. In the embodiment shown in Figure 1 the angle ⁇ is approximately 42 °. If the nozzle is inclined, the nozzle jet 23 hits at point 36 and one against Direction of the material web 3 directional speed component is the angle ⁇ with a negative sign. Thereby, that the nozzle or the nozzle jet 23 opposite the normals 34 of the nozzle jet tangent 35 is inclined, wear of the Drying cylinder 5 through the impinging jet 23 avoided, but at least reduced.
  • Figure 2 shows a part of the drying cylinder 5 in Cross-section, namely the edge area, that of the driver's side the drying cylinder 5 is facing.
  • How 2 shows the nozzle of the nozzle device 21 compared to one in the running direction (arrow 25) of the material web 3 extending straight line G is inclined at an angle ⁇ in a range from 0 ° ⁇ ⁇ 45 °, preferably from 10 ° to 30 ° lies. This advantageously ensures that reflected from the drying cylinder 5 Liquid of the jet stream 23 essentially, preferably only the dashed indicated remaining web 42 of material web 3 moistened.
  • the nozzle of the nozzle device 21 has a diameter from 0.05 mm to 0.3 mm, preferably from 0.08 mm to 0.2 mm. This can reduce fluid consumption the tip cutter 19 reduced and prevents moistening of the threading strip become.
  • the nozzle is under pressure Liquid, for example water, which under a pressure of 400 bar to 2000 bar, preferably from 600 bar to 1200 bar stands. The pressure can vary depending on the basis weight the material web 3 can be selected.
  • FIG. 3 shows another embodiment of the Tip cutter 19. Same parts are the same Provide reference numerals so that the description of which is referred to FIG. 1 can.
  • the nozzle device 21 has a nozzle 43 which to the surface of the drying cylinder 5 respectively to the one lying on the drying cylinder
  • Material web 3 has a distance y, which in a Range from 1 mm to 50 mm, preferably from 10 mm to 25 mm.
  • the nozzle 43 points to the drain point 17, on which the material web 3 or the threading strip from the drying cylinder 5 expires, a distance x that is in a Range from 1 mm to 500 mm, preferably from 20 mm is up to 100 mm.
  • the threading strip is here too, as in the embodiment shown in FIG. 1, separated from the material web, while it rests on the drying cylinder 5 and is supported by this. This allows the threading strip exactly separated by means of the nozzle jet 23 become.
  • By varying the nozzle spacing y from the surface of the material web 3 can the effect of the jet 23, for example at a constant pressure of the liquid or be weakened.
  • the tip cutter 19 can be used with a drying cylinder of course with another one Roll interact over which the material web 3 is guided, for example with a web guide roller.
  • the Inclination of the nozzle 43 with respect to the nozzle device 21 one running in the running direction of the material web Straight line G is a moistening of the nozzle jet 23 separate threading strips reduced or can be prevented. Thereby can safely guide the threading strip by the downstream of the tip cutter 19 Area of machine 1 can be guaranteed. Deposits on the nozzle that by liquid reflected from the material web and pieces / fibers separated from the material web caused. Because of the inclination the nozzle is a splash back of the reflected Prevents liquid and the material to be cut.
  • the tip cutter described with reference to Figures 1 to 3 exhibits a high level of functional reliability on.
EP98115113A 1997-08-16 1998-08-11 Appareil de coup en pointe Expired - Lifetime EP0897889B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19735643 1997-08-16
DE19735643A DE19735643A1 (de) 1997-08-16 1997-08-16 Spitzenschneider

Publications (2)

Publication Number Publication Date
EP0897889A1 true EP0897889A1 (fr) 1999-02-24
EP0897889B1 EP0897889B1 (fr) 2002-12-04

Family

ID=7839230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98115113A Expired - Lifetime EP0897889B1 (fr) 1997-08-16 1998-08-11 Appareil de coup en pointe

Country Status (2)

Country Link
EP (1) EP0897889B1 (fr)
DE (2) DE19735643A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002028605A1 (fr) * 2000-10-02 2002-04-11 Metso Paper, Inc. Equipement permettant de couper en particulier une bande de papier a l'aide d'un jet d'eau
DE10159360A1 (de) * 2001-12-04 2003-06-12 Voith Paper Patent Gmbh Verfahren zum Aufwickeln einer laufenden Materialbahn sowie Wickelmaschine zur Durchführung des Verfahrens
DE10343419A1 (de) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Vorrichtung und Verfahren zum Entfernen von Ausschuss einer Materialbahn von einem Wickeltambour

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106142222A (zh) * 2015-04-17 2016-11-23 上海东冠纸业有限公司 一种利用高压水处理纸卷的方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4931140A (en) * 1987-12-09 1990-06-05 Oy Tampella Ab Method and a device for cutting a web in a paper machine by means of a water jet
WO1991003359A1 (fr) * 1989-09-08 1991-03-21 Fibron Machine Corp. Appareil de coupe d'une feuille de papier mobile au moyen d'un jet d'eau
US5758556A (en) * 1991-11-19 1998-06-02 Valmet Corporation Method and arrangement for cutting a leader of the web in a paper or board machine in the drying section of the machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996825A (en) * 1975-12-18 1976-12-14 Johns-Manville Corporation Method and apparatus for cutting a web fibrous non-woven mat
DE2656242C2 (de) * 1976-12-11 1978-12-21 J.M. Voith Gmbh, 7920 Heidenheim Vorrichtung zum Trennen einer Faserbahn
DE3039028A1 (de) * 1980-10-13 1982-05-06 Mannesmann AG, 4000 Düsseldorf Verfahren und vorrichtung zum reinigen und entzundern der oberflaeche von heissem gut
DE4440483A1 (de) * 1993-11-15 1995-05-18 Mike Buettner Anlage zum Reinigen und/oder Abtragen der Oberfläche eines Werkstücks
FR2736563B1 (fr) * 1995-07-11 1997-08-22 Comadur Sa Buse de decoupage a jet de fluide devie

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4931140A (en) * 1987-12-09 1990-06-05 Oy Tampella Ab Method and a device for cutting a web in a paper machine by means of a water jet
WO1991003359A1 (fr) * 1989-09-08 1991-03-21 Fibron Machine Corp. Appareil de coupe d'une feuille de papier mobile au moyen d'un jet d'eau
US5758556A (en) * 1991-11-19 1998-06-02 Valmet Corporation Method and arrangement for cutting a leader of the web in a paper or board machine in the drying section of the machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002028605A1 (fr) * 2000-10-02 2002-04-11 Metso Paper, Inc. Equipement permettant de couper en particulier une bande de papier a l'aide d'un jet d'eau
US6955107B2 (en) 2000-10-02 2005-10-18 Metso Paper, Inc. Equipment for cutting particularly a paper web with a water jet
DE10159360A1 (de) * 2001-12-04 2003-06-12 Voith Paper Patent Gmbh Verfahren zum Aufwickeln einer laufenden Materialbahn sowie Wickelmaschine zur Durchführung des Verfahrens
DE10343419A1 (de) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Vorrichtung und Verfahren zum Entfernen von Ausschuss einer Materialbahn von einem Wickeltambour

Also Published As

Publication number Publication date
DE59806501D1 (de) 2003-01-16
EP0897889B1 (fr) 2002-12-04
DE19735643A1 (de) 1999-02-18

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