+

WO2008034952A1 - Lame et procédé de production de la lame - Google Patents

Lame et procédé de production de la lame Download PDF

Info

Publication number
WO2008034952A1
WO2008034952A1 PCT/FI2007/050501 FI2007050501W WO2008034952A1 WO 2008034952 A1 WO2008034952 A1 WO 2008034952A1 FI 2007050501 W FI2007050501 W FI 2007050501W WO 2008034952 A1 WO2008034952 A1 WO 2008034952A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
base structure
wear
tips
edges
Prior art date
Application number
PCT/FI2007/050501
Other languages
English (en)
Inventor
Ilkka Eskelinen
Original Assignee
Ike-Service Oy
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 Ike-Service Oy filed Critical Ike-Service Oy
Publication of WO2008034952A1 publication Critical patent/WO2008034952A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/005—Doctor knifes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Definitions

  • This invention relates to a blade according to the preamble of claim 1 on the edge of the base structure of which is arranged at least one wear area.
  • the invention also relates to a method according to the preamble of claim 5 for manufacturing the blade, e.g. a composite doctor blade of a paper machine, as die pultrusion.
  • composite blades are used e.g. in the doctors of paper machines.
  • blades having a base structure and one wear edge arranged in the base structure.
  • wear many times the blade has to be replaced by a new one, which causes, inter alia, enormous material losses in the form of composite blade waste.
  • the object of this invention is to provide a novel and more versatile than earlier blade.
  • the blade according to the invention is characterised by that the wear area is arranged to be formed of at least two wear tips arranged on the same edge of the base structure.
  • the method according to the invention is characterised by that, in the method, a blade blank mat is manufactured from which blade blanks are cut.
  • Fig. 1 shows a crude principal view of an example of the manufacturing line of a blade according to the invention
  • Fig. 2 axonometrically shows the base structure of the blade manufactured according to the invention
  • Figs. 3a and 3b show an end view of the blade seen before and after a diagonal cut
  • Figs. 4a and 4b show another embodiment in which two separate blades are obtained from the diagonally cut base structure according to Fig. 3b,
  • Figs. 5a and 5b show an embodiment in which the used wear edges of the blade are cut to introduce unused wear edges for use
  • Fig. 6 shows the blade according to the invention in double-doctor operation.
  • Fig. 1 shows an example of the method according to the invention for manufacturing a composite blade 10.
  • the blade 10 according to the invention is manufactured at least partly using pultrusion technology in a process 20 which is also known as die pultrusion.
  • pultrusion technology in a process 20 which is also known as die pultrusion.
  • die pultrusion 20 as such is conventional technology, thus there is no need in this connection to describe it in great detail.
  • fibres/a fibre mat 11 are/is pulled through basic stages characteristic of the pultrusion technology, resulting in a blade blank 22, from which blades 10 can be detached, to be reeled onto a reel 27.
  • the fibres 11 can be e.g. carbon fibre and/or glass fibre and/or aramid fibre and/or boron fibre, this being in no way limited by the basic idea of the invention.
  • An example of the ratio forming a composite of carbon fibre and glass fibre is 40/60.
  • the direction of fibres in the composite can be arbitrary.
  • the glass-fibre layers can be oriented e.g. parallel to the longitudinal axis of the blade 10, while at least some of the layers containing carbon fibre can deviate from the direction of the longitudinal axis of the blade 10.
  • the blade blank 22 consists of a rigid base structure 15 having several fibre layers as a laminate structure.
  • the pull direction of the blank 22 is shown by an arrow.
  • the fibres 11 can be arranged in a preset battery of several reels 21. From there, guides (not shown) are used to lead them first to the impregnation stage 12. There, the fibres 11 are impregnated with an excess of some selected matrix material 23, such as e.g. polymer material. As examples of these can be mentioned possibly fluoridised thermoset plastic, duraplastic or (epoxy) resin. Impregnation is carried out to an excess, the excess then running out already in connection with the impregnation stage 12 or evaporating in the actual curing stage 14. The impregnation 12 is followed by the actual die pultrusion i.e. the curing stage 14.
  • the fibres 11 impregnated with the polymer 23 are pulled through a die 14' of a set kind.
  • a set temperature and pressure effect is also associated with the die pultrusion 14.
  • the polymer 23 dries and gains strength to its final hardness and the fibres 11 stiffen into the desired shape defined by the die 14'.
  • the curing stage 14 can be formed of zones with different temperatures/pressure effects, the arranging of which is obvious to those skilled in the art.
  • the completed blade blank 22 which is e.g. reeled on the reel 27 is pulled using pulling means 19.
  • the pulling means 19 can consist of e.g. a nip formed by at least two rolls through which the blade blank 22 travels onto the reel 27.
  • the narrowest blade type e.g. 100-150 metres of the blade blank 22 can be reeled onto the reel 27, after which it can be changed.
  • the finished blades 10 can be detached from the blanks 22 e.g. by cutting them into customer size in a later stage or also alternatively instead of reeling.
  • Fig. 2 shows the base structure 15 of the blade according to the invention as an axonometric illustration.
  • a first embodiment in the manufacturing method according to the invention when forming the blade blank 22, in the continuous composite base structure 15 of the blade is formed in the pultrusion process 20 on at least one edge or even on both edges a groove 16.1, 16.2 in the longitudinal direction of the blade.
  • the die 14' there are shapings for this by means of which in the base structure 15 is formed on its both narrow edges such a recess groove 16.1, 16.2.
  • FIG. 2 shows an example of the base structure 15 provided with grooves 16.1, 16.2 being produced in the process according to Fig. 1.
  • An example of the depth of the groove 16.1, 16.2 can be 5-75 mm (or even 100 mm).
  • the total width of the base structure 15 of the blade 10 can be e.g. 50-200 mm.
  • the width of the groove 16.1, 16.2 i.e. the distance between the tips 17.1, 17.2 can be e.g. 1-300 mm.
  • a diagonal cut Ci onto both edges of the base structure 15 provided with the grooves 16.1, 16.2 is directed a diagonal cut Ci, whereby in the base structure 15 are interestingly formed according to Fig. 3b four tips 17.1-17.4, two on both of its longitudinal edges.
  • the tips can also be provided in the pultrusion process 20 with a die enabling the forming of tips.
  • the tips 17.1, 17.2 and 17.3, 17.4 on the same edge are suitably on different levels in relation to each other, whereby in one base structure 15 there are four wear edges.
  • the levels and the shape of the tips 17.1-17.4 can be affected.
  • the tips 17.1-17.4 are cut along a parallel cutting line Ci, but the cutting line Ci can also be divergent.
  • Figs. 4a and 4b show another embodiment of the blade according to the invention.
  • the base structure 15 of the blade is cut along the line C 2 either diagonally or straight through in the middle.
  • Such blades 10.1, 10.2 can be used e.g. in different doctoring positions.
  • Figs. 5a and 5b show a first embodiment in which the originally longer wear edges 17.1, 17.3 of the blade 10 in Fig. 5a have been worn out.
  • a surface being doctored such as e.g. with a roll or a cylinder.
  • the original appearance of the wear edges 17.1, 17.2 is shown with dashed lines and the worn tip with designation W.
  • both worn-out wear edge stubs are cut according to Fig. 5a along the line C3.
  • the diagonal cuts Ci performed to the base structure 15 provided with the grooves 16.1, 16.2 enable an interestingly versatile utilisation of the blade 10, 10.1, 10.2. Now the same blade can be used even four times. Then, the blade can be turned in a desired direction when the wear margin of one wear edge has been worn out. On the other hand, the blade blank can also be split in two in the direction of its longitudinal axis when manufacturing blades. Then, three blades are obtained of one blank stub. The work edge of the blade provided with the groove is then provided with two wear areas and the opposite edge possibly with one wear area.
  • Fig. 6 shows another embodiment of a possibility to arrange doctor operation provided by the blade 10.1 according to the invention.
  • the blade 10.1 according to the invention can be interestingly utilised also in arranging double-doctor operation. Then, both wear tips 17.1, 17.2 on the longitudinal edge of the blade 10.1 are simultaneously in doctor contact with the surface being doctored, now with a roll 26.
  • the blade 10 is set in the blade holder 27, of which only one is now required. It should be understood that the blade holder is described here as extremely simplified and tailoring different blade holders for the blade 10.11 according to the invention is obvious to those skilled in the art.
  • Into the groove between the tips 17.1, 17.2 can be directed different sprays or blows or suctions for removing impurities.
  • the blows can be e.g. at the ends of the blade 10.1 or even inside it in the groove. With the suitable diagonal cut and the suitable positioning of the blade holder 27 in relation to the roll 26 is obtained desired contact between the wear tips 17.1, 17.2 and the roll 26.
  • the base structure 15 can be, instead of the laminar structure shown in Figs. 2-6, also a shaped profile in which e.g. the joining point of the tips 17.1, 17.2 to the base structure 15 can be locally reinforced. Then, the base structure 15 still fits as thin in its doctor holder 27 and, on the other hand, also the distance between the tips 17.1, 17.2 (groove 16.1) is obtained large enough e.g. for enabling viable dirt removal.
  • blades 10 for several different operating positions from the blade blank 22 manufactured in the manner according to the invention.
  • the blade 10 can also be applied in coating machines/devices, pulp machines, printing machines, tissue machines or generally in applications related to web formation, paper-making and closely related fields and finishing/processing sites in which doctoring is performed for one or more purposes.
  • the blade 10 can be further used in the above- mentioned machines as a cleaning blade maintaining runnability and paper quality and/or as a servicing blade in which the surface being doctored is serviced (e.g. ground/polished) by the blade in order to maintain the original state of the roll or to achieve it.
  • a cleaning blade undesirable materials which have adhered on the surface of the roll are removed from it.
  • the fibre- reinforced reinforced plastic composite blade 10 according to the invention is applicable for use as a paper-web transfer doctor.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

L'invention a trait à une lame (10), dotée d'une structure de base (15) sur le bord de laquelle se trouve au moins une zone d'usure (17.1, 17.2). La zone d'usure est agencée de manière à être formée d'au moins deux pointes d'usure (17.1, 17.2) agencées sur le même bord de la structure de base (15). L'invention a également trait à un procédé de production de la lame.
PCT/FI2007/050501 2006-09-20 2007-09-19 Lame et procédé de production de la lame WO2008034952A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20065573 2006-09-20
FI20065573A FI20065573A0 (fi) 2006-09-20 2006-09-20 Terä ja menetelmä terän valmistamiseksi

Publications (1)

Publication Number Publication Date
WO2008034952A1 true WO2008034952A1 (fr) 2008-03-27

Family

ID=37067224

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2007/050501 WO2008034952A1 (fr) 2006-09-20 2007-09-19 Lame et procédé de production de la lame

Country Status (2)

Country Link
FI (1) FI20065573A0 (fr)
WO (1) WO2008034952A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2510152A4 (fr) * 2009-12-11 2013-05-01 Metso Paper Inc Racle pour une machine de formation de voile de carde et agencement de raclage dans une machine de formation de voile de carde
DE102021133212A1 (de) 2021-12-15 2023-06-15 Voith Patent Gmbh Schaber und Beschichtungsvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4036726A1 (de) * 1990-11-17 1992-05-21 Hauni Werke Koerber & Co Kg Beschichtungsvorrichtung
US5628250A (en) * 1994-12-29 1997-05-13 Koenig & Bauer-Albert Aktiengesellschaft Chamber doctor blade assembly
EP1123751A1 (fr) * 2000-02-08 2001-08-16 Metso Paper, Inc.(Reg.No. 763281) Lame composite et procede pour sa fabrication
DE10303464A1 (de) * 2003-01-29 2004-09-30 Voith Paper Patent Gmbh Verfahren und Doppelsiebformer einer Maschine zur Herstellung einer Faserstoffbahn
US20050284363A1 (en) * 2004-06-16 2005-12-29 Christoph Henninger Doctor bed
WO2007036606A1 (fr) * 2005-09-28 2007-04-05 Ike-Service Oy Lame, composants de structure d’une lame et procédé pour fabriquer une lame et les composants de structure d’une lame

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4036726A1 (de) * 1990-11-17 1992-05-21 Hauni Werke Koerber & Co Kg Beschichtungsvorrichtung
US5628250A (en) * 1994-12-29 1997-05-13 Koenig & Bauer-Albert Aktiengesellschaft Chamber doctor blade assembly
EP1123751A1 (fr) * 2000-02-08 2001-08-16 Metso Paper, Inc.(Reg.No. 763281) Lame composite et procede pour sa fabrication
DE10303464A1 (de) * 2003-01-29 2004-09-30 Voith Paper Patent Gmbh Verfahren und Doppelsiebformer einer Maschine zur Herstellung einer Faserstoffbahn
US20050284363A1 (en) * 2004-06-16 2005-12-29 Christoph Henninger Doctor bed
WO2007036606A1 (fr) * 2005-09-28 2007-04-05 Ike-Service Oy Lame, composants de structure d’une lame et procédé pour fabriquer une lame et les composants de structure d’une lame

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2510152A4 (fr) * 2009-12-11 2013-05-01 Metso Paper Inc Racle pour une machine de formation de voile de carde et agencement de raclage dans une machine de formation de voile de carde
DE102021133212A1 (de) 2021-12-15 2023-06-15 Voith Patent Gmbh Schaber und Beschichtungsvorrichtung

Also Published As

Publication number Publication date
FI20065573A0 (fi) 2006-09-20

Similar Documents

Publication Publication Date Title
US6991757B2 (en) Caring doctor blade and method for manufacture of same
JP7095771B2 (ja) 繊維強化樹脂成形材料の製造方法
US6926855B1 (en) Method of making composite doctor blades
MX2009000928A (es) Cuchilla de crepado con una superficie biselada muy lisa.
US5408720A (en) Mounting assembly for a scraper blade
US20020189777A1 (en) Arrangement for doctoring a belt or a soft roll surfacing in a paper or board machine
EP0855463A1 (fr) Procédé et dispositif pour le finissage de papier
KR20050012780A (ko) 톱니형 닥터 블레이드
EP1920112A1 (fr) Dispositif et procédé de couchage
WO2008034952A1 (fr) Lame et procédé de production de la lame
KR20040071777A (ko) 복합체 닥터 블레이드
KR101283000B1 (ko) 제지 또는 판지 기계의 롤용 닥터 블레이드 및 닥터블레이드의 제조방법
CN101331013A (zh) 刀片、刀片结构部件及制造刀片和刀片结构部件的方法
US7669331B2 (en) Roll and method for the manufacture of such a roll
EP1078128B1 (fr) Procede et dispositif permettant de diviser une bande papier et machine papier comprenant un tel dispositif
US7438784B2 (en) Method and apparatus for calendering a paper or paperboard web
DE102021105618A1 (de) Schaberklinge und Walzenvorrichtung
CN114197244B (zh) 施胶机
WO2006118556A1 (fr) Lame et son procede de fabrication
FI87476C (fi) Stavbestrykningsanordning
FI110705B (fi) Menetelmä ja sovitelma kaavaroinnissa paperi- tai kartonkikoneella
CA2194940C (fr) Methode et appareil de finition du papier
FI101636B1 (fi) Paperi/kartonkikoneen kaavarinterä ja menetelmä sen valmistamiseksi
US20120279407A1 (en) Paper coater apparatus and process

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07823138

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07823138

Country of ref document: EP

Kind code of ref document: A1

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载