EP0306759B1 - Means for controlling wires in a paper machine or cardboard machine - Google Patents

Means for controlling wires in a paper machine or cardboard machine Download PDF

Info

Publication number
EP0306759B1
EP0306759B1 EP88113618A EP88113618A EP0306759B1 EP 0306759 B1 EP0306759 B1 EP 0306759B1 EP 88113618 A EP88113618 A EP 88113618A EP 88113618 A EP88113618 A EP 88113618A EP 0306759 B1 EP0306759 B1 EP 0306759B1
Authority
EP
European Patent Office
Prior art keywords
strip
wires
strips
supporting table
bellows
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
Application number
EP88113618A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0306759A1 (en
Inventor
Tapani Nyman
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.)
Valmet Ahlstrom Oy
Original Assignee
Valmet Ahlstrom 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 Valmet Ahlstrom Oy filed Critical Valmet Ahlstrom Oy
Priority to AT88113618T priority Critical patent/ATE66027T1/de
Publication of EP0306759A1 publication Critical patent/EP0306759A1/en
Application granted granted Critical
Publication of EP0306759B1 publication Critical patent/EP0306759B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/36—Guiding mechanisms
    • D21F1/38—Pads
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type

Definitions

  • the present invention concerns a means for controlling wires in a paper machine or in a cardboard machine.
  • the means relates to the controlling of wires in a twin-wire section where the wires run parallel, one above the other, and where stock is introduced between said wires to be dewatered.
  • a dewatering box above the upper wire, partial vacuum prevailing in said dewatering box in order to suck up water that has been expressed from the stock.
  • a supporting table or equivalent Under the lower wire is provided a supporting table or equivalent, which is fixed relative to the dewatering box.
  • controlling members to urge the lower wire upwards in a direction against the upper wire, which in its turn lies against the dewatering box.
  • controlling members act between the supporting table and the lower wire.
  • a wire controlling track wherein is provided a number of strips positioned closely side by side and extending over the wire width, said strips lying against the lower wire and the pressure of said strips against the lower wire being adjustable.
  • the strips are displaceable towards the lower wire and away therefrom, but the angle of the top surfaces of said strips against the wire transport plane is not adjustable.
  • German Patent No. 3,153,305 another wire controlling track is disclosed wherein a number of mutually spaced strips are present, lying against the lower wire. These strips are individually regulated as regards their pressure against the lower wire, with the aid of a spring member. However, each strip is pivotally connected with the spring member coordinated with the particular strip, and therefore the position of the top surface of the strips relative to the horizontal plane cannot be adjusted. Thus, according to this patent, compensation of inclined position of the strips' top surfaces relative to the surface of the lower wire, owing to friction between the lower wire and the strips, is not feasible.
  • the present invention teaches a means by the aid of which it becomes possible to achieve what has just been said.
  • the present invention relates to a means for controlling wires in a twin-wire section in a paper or cardboard machine where the wires run one over the other, for dewatering stock that is present between the wires, where a dewatering box is provided on one side of the wires and where a number of strips disposed side by side are provided on the other side of the wires, said strips running across the transport direction of the wires and over the entire width of the wires and where the strips have been arranged to be pressed against the wire located nearest to the strips, with the aid of pressure elements, where the pressure elements are arranged to act between the strips and a supporting table fixedly mounted relative to said dewatering box and being characterized in that for each strip a separate pressure element is provided, where each one of the pressure elements comprises at least two force-supplying members provided between the respective strip and the supporting table, said members being arranged to displace the strip in the direction towards and away from said dewatering box, that a first one of the members has been arranged to act against the forward end of the strip
  • FIG. 1 an elevational view is shown of a twin-wire section 1 of a paper machine, where the upper wire 2 runs over deflection rolls 3, 4, 5 and 6 and where the lower wire 7 runs substantially parallel to the upper wire and under the upper wire 2.
  • the wires 2,7 define a wedge-shaped entrance portion 8, where the stock is successively compressed.
  • Fig. 1 are also shown a multitude of set-up members, which are of a kind known in the art and which therefore are not more closely described.
  • a dewatering run comprising a dewatering box 10 containing three chambers I, II and III, which carry different degrees of vacuum. Water from the stock is drawn up by ducts 11 into the chambers. The ducts 11 are included in the bottom 12 of the dewatering box 10. The upper wire 2 runs against this bottom.
  • a supporting table 13 mounted fixedly relative to the dewatering box 10, this table being carried on a stand which has been generally denoted with reference numeral 14.
  • a control member in the shape of a number of pressure elements 15 arranged to press the strips 16 upward in Fig. 1 and thereby to apply pressure against the lower wire 7, and thereby against the stock.
  • the strips 16 are provided with grooves 18 for carrying off water from the stock.
  • each one of the pressure elements comprising at least two force-supplying members 19, 20; 21, 22; 23, 24, between the respective strip 16, 31, 32 and the supporting table 13.
  • the members 19-24 are disposed to displace the strips in the direction toward and away from the dewatering box 10.
  • a first one of the members 19; 21; 23 is disposed to act against the forward end 25; 26; 27 of the respective strip 16, 31, 32 in the transport direction of the wires, and a second one of the members 20; 22; 24, to act against the rear end 28; 29; 30 of the strip in the transport direction of the wires.
  • the force-supplying members 19-24 are individually controllable so that on one hand the pressure of the strip against the lower wire, and on the other hand the angle of the top surface of the strip with reference to the lower wire, can be adjusted.
  • the strips 16, 31, 32 are placed parallelling each other, and spaced from each other.
  • the distance between strips amounts only to a fraction of the width of one strip in the transport direction of the wires.
  • the present invention therefore results in every strip being individually adjustable so that optimum control of the controlling track in the twin-wire section can be obtained.
  • the force-supplying members comprise rubber bellows or equivalent, arranged to be controlled with the aid of compressed air.
  • Fig. 2 a first embodiment of the invention, corresponding to the embodiment depicted in Fig. 1.
  • the supporting table comprises a supporting heel 33, mounted on the carrying frame 34 of the supporting table 13.
  • each one of the force-supplying members consists of a rubber bellows 19, 20, where the two bellows 19, 20, seen in section transversal to the longitudinal direction of the pressure element, are wedge-shaped and are placed against and upon each other so that together they constitute a substantially rectangular pillow between the strip 16 and the supporting table 13.
  • the rubber bellows are preferably made of fabric-reinforced rubber, or of material having equivalent properties.
  • a fixing element 37 in the shape of a plate.
  • One marginal part 38 of the fixing element is integrally connected with the supporting table 13 (33), and the other marginal part 39 of the fixing element is integrally connected with the strip 16.
  • FIG. 3 the fixing which is on the left in Fig. 2 is shown on a larger scale.
  • Fig. 3 is also shown the left margin of the lower bellows 20, fixed in place with a screwed joint to the supporting table.
  • the reference numeral 40 indicates a clamp of plastic or metal and numeral 41, a screw.
  • the fixing element may likewise be made of fabric-reinforced rubber, but it may also be made of sheet metal.
  • interrupted lines schematically indicate nipples 42, 42′ for introducing and carrying off compressed air to the bellows 19, 20.
  • the nipples are preferably placed on the respective end of the bellows.
  • the surfaces of the bellows adjoining the underside surface of the strip 16 and the top surface of the supporting heel 33 have been affixed to the respective surface. This may be done with mechanical junctures or by cementing the bellows to the respective surface.
  • the strip 31; 32 respectively the supporting table 44; 45, partly embrace each other so that the strip 31; 32 has only limited mobility relative to the supporting table 44; 45. Due to this embodiment there is no need for any fixing element of the type just described in connection with Fig. 2.
  • a further bellows 46 has been provided which holds within itself the two bellows 21 and 22 already mentioned.
  • These inner bellows 21, 22 are fixed to the outer bellows 46, which in turn is preferentially affixed to the strip 31, respectively to the supporting table 44, by means of mechanical junctures or by cementing.
  • a duct 47,48 serving introduction and evacuation of compressed air is provided to each inner bellows 21, 22.
  • the strip is restrictedly displaceable through a very short distance in the left/right direction in Fig. 4.
  • the strip is further restrictedly displaceable upward/downward in Fig. 4, though through a longer distance than in the left/right direction.
  • the free play which is present between the strip and the supporting table is merely conducive to easier upward/downward displacement and inclined positioning of the top surface of the strip.
  • a duct 49 between the outer bellows and free atmosphere must be provided.
  • the ends of the outer bellows may be open.
  • Fig. 5 is shown an embodiment equivalent to that of Fig. 4, featuring two bellows 23, 24 fixed in a carrying member 50, 51, for the strip 32, and a portion 45 belonging to the supporting table.
  • the strip is restrictedly displaceable relative to the supporting table.
  • Ducts 52, 53 have been provided for supplying and carrying off compressed air.
  • the bellows 21, 22, 46, 23, 24 are preferably made of fabric-reinforced rubber material.
  • the strips are made of some suitable, wear-resistant material.
  • every rubber bellows 19 has a length consistent with the total length of the strips 16.
  • one bellows or both bellows carrying a strip 16 may consist of two or more bellows 19′, 19 ⁇ , 19′′′ located after each other in their longitudinal direction, so that the bellows 19′, 19 ⁇ , 19′′′ in combination constitute a force-supplying member having a length consistent with the total length of the strips 16, see Fig. 7.
  • every bellows 19′,19 ⁇ ,19′′′ is provided with a nipple for supplying and letting off compressed air.
  • Each bellows 19′, 19 ⁇ , 19′′′ is individually adjustable.
  • This embodiment implies that it is even possible to control the pressure profile across the width of the wire 7.
  • a long bellows extending over the entire width of the wire may be subdivided into different sections.
  • the bellows may have other shapes and cover a greater or smaller part of the underside of the strips and of the top surface of the supporting table as seen in section according to Figs 2, 3 and 4. Futhermore, the bellows may be made of materials other than have been mentioned in the foregoing and which are suitable in the application in hand.
  • the fixing element 37 may constitute a spring element in case it is made of metal.

Landscapes

  • Paper (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Sewing Machines And Sewing (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
EP88113618A 1987-09-07 1988-08-22 Means for controlling wires in a paper machine or cardboard machine Expired - Lifetime EP0306759B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88113618T ATE66027T1 (de) 1987-09-07 1988-08-22 Vorrichtung zur kontrolle der siebe in einer papier- oder kartonmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8703468A SE456590B (sv) 1987-09-07 1987-09-07 Anordning for styrning av viror i en pappersmaskin eller kartongmaskin
SE8703468 1987-09-07

Publications (2)

Publication Number Publication Date
EP0306759A1 EP0306759A1 (en) 1989-03-15
EP0306759B1 true EP0306759B1 (en) 1991-08-07

Family

ID=20369499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88113618A Expired - Lifetime EP0306759B1 (en) 1987-09-07 1988-08-22 Means for controlling wires in a paper machine or cardboard machine

Country Status (13)

Country Link
EP (1) EP0306759B1 (pt)
JP (1) JP2691913B2 (pt)
KR (1) KR970008599B1 (pt)
AT (1) ATE66027T1 (pt)
AU (1) AU2303188A (pt)
BR (1) BR8807192A (pt)
CA (1) CA1335632C (pt)
CH (1) CH676257A5 (pt)
DE (1) DE3864105D1 (pt)
ES (1) ES2025747T3 (pt)
FI (1) FI90572C (pt)
SE (1) SE456590B (pt)
WO (1) WO1989002499A1 (pt)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823966C2 (de) * 1988-07-15 1995-03-16 Voith Gmbh J M Vorrichtung zum Führen der Siebe einer Doppelsiebpartie einer Papier- oder Kartonmaschine
FI885607A (fi) * 1988-12-01 1990-06-02 Ahlstroem Valmet Anordning foer styrning av viror i en pappersmaskins former.
US5389206A (en) * 1989-08-22 1995-02-14 J. M. Voith Gmbh Twin wire former
DE3929265C2 (de) * 1989-09-02 1997-05-07 Voith Sulzer Papiermasch Gmbh Leiste für Blattbildungszone einer Papiermaschine
DE4002304A1 (de) * 1990-01-26 1991-08-14 Escher Wyss Gmbh Former in einer papiermaschine
DE4026953C2 (de) * 1990-01-26 1995-11-30 Escher Wyss Gmbh Entwässerungsvorrichtung und Verfahren zur Entwässerung an einem Doppelsiebformer
DE4005420C2 (de) * 1990-02-21 1995-06-08 Voith Gmbh J M Doppelsiebformer
DE4009628C2 (de) * 1990-03-26 1994-11-03 Voith Gmbh J M Druckmittel-Stützeinrichtung
DE4014403C2 (de) * 1990-05-04 1994-03-10 Escher Wyss Gmbh Vertikalformer
DE4019884A1 (de) * 1990-06-22 1992-01-09 Voith Gmbh J M Leiste zur nachgiebigen stuetzung eines siebbandes
DE4107653A1 (de) * 1991-03-09 1992-09-10 Escher Wyss Gmbh Entwaesserungseinrichtung fuer die nasspartie einer papiermaschine
FI920228A0 (fi) * 1992-01-17 1992-01-17 Valmet Paper Machinery Inc Banformningsparti foer pappersmaskin.
FI103995B1 (fi) * 1993-06-17 1999-10-29 Valmet Paper Machinery Inc Menetelmä ja laite sekä säätöjärjestely paperikoneessa paperirainan poikittaisen profiilin hallinnassa
FI96623C (fi) 1994-08-31 1996-07-25 Valmet Paper Machinery Inc Kaksiviiraformeri, etenkin nopeille paperikoneille
DE29504419U1 (de) * 1995-03-15 1995-05-11 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Leisteneinheit zur nachgiebigen Unterstützung eines Siebbandes einer Papiermaschine
DE10333201A1 (de) * 2003-07-22 2005-02-24 Voith Paper Patent Gmbh Leiste zur nachgiebigen Stützung eines endlos umlaufenden Siebbands und Doppelsiebformer
JP6199136B2 (ja) * 2013-09-17 2017-09-20 三菱重工業株式会社 液中固体物取出装置および液中固体物取出方法
DE202014103256U1 (de) * 2014-07-15 2014-07-23 Valmet Technologies, Inc. Belastungsvorrichtung für eine Maschine zur Herstellung von Faserbahnen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027940A (en) * 1958-12-31 1962-04-03 Lodding Engineering Corp Adjustable supports for fourdrinier screen wires
US3357881A (en) * 1964-10-15 1967-12-12 Fitchburg Paper Wire support for papermaking machines
US3772145A (en) * 1971-03-31 1973-11-13 Black Clawson Co Pivotal mounting structures for vertical twin-wire papermaking machine
DE3406217C1 (de) * 1984-02-21 1985-10-31 O. Dörries GmbH, 5160 Düren Vorrichtung zum Führen der Siebe einer Doppelsiebpartie einer Papier- oder Kartonmaschine
DE3503242A1 (de) * 1985-01-31 1986-08-07 O. Dörries GmbH, 5160 Düren Vorrichtung zum fuehren der siebe einer doppelsiebpartie einer papier- oder kartonmaschine
GB2174120B (en) * 1985-04-26 1988-08-10 Doerries Gmbh Apparatus for guiding the wires of a twin wire forming section of a paper or cardboard machine
FI861811A (fi) * 1986-04-30 1987-10-31 Viljo Klemetti Foerfarande foer reglering av tvaersnitt profilen hos en pappersbana samt en anordning foer tillaempning av foerfarandet.

Also Published As

Publication number Publication date
CA1335632C (en) 1995-05-23
JP2691913B2 (ja) 1997-12-17
BR8807192A (pt) 1989-10-17
CH676257A5 (pt) 1990-12-28
WO1989002499A1 (en) 1989-03-23
FI884109A0 (fi) 1988-09-06
SE456590B (sv) 1988-10-17
KR890005347A (ko) 1989-05-13
SE8703468D0 (sv) 1987-09-07
FI90572C (fi) 1994-02-25
AU2303188A (en) 1989-04-17
EP0306759A1 (en) 1989-03-15
ES2025747T3 (es) 1992-04-01
ATE66027T1 (de) 1991-08-15
KR970008599B1 (ko) 1997-05-27
DE3864105D1 (de) 1991-09-12
FI884109A (fi) 1989-03-08
FI90572B (fi) 1993-11-15
JPH01104895A (ja) 1989-04-21

Similar Documents

Publication Publication Date Title
EP0306759B1 (en) Means for controlling wires in a paper machine or cardboard machine
US5185064A (en) Means for controlling wires in a paper machine or cardboard machine
FI76008C (fi) Belaeggningsanordning.
JPH0364636B2 (pt)
US5561918A (en) Web holdown and drive for corrugator double backer
CA2104230A1 (en) Twin-wire former
CA2034993C (en) Forming section of a papermaking machine and method of use thereof
US5706994A (en) Vacuum assisted web drive for corrugator double backer
US4818330A (en) One-sided corrugated board machine having replacable corrugating rollers
FI90673B (fi) Paperikoneen kaksiviirainen rainanmuodostusosa
US5857605A (en) Vacuum assisted web drive for corrugator double backer
JP3059673B2 (ja) 抄紙機の脱水装置用リブ
FI97697B (fi) Kaksoisviirapuristin
EP1215336B1 (en) Drainage foil for a paper machine
FI95058B (fi) Paperikoneen vedenpoistolaitteen listasto
EP0668394B1 (en) Method and apparatus for sheet formation
FI104192B (fi) Vyöhykesäädettävä kuormituslaatikko paperi- tai kartonkikoneen formeria varten
US1936609A (en) Paper making apparatus
CA2325855A1 (en) Apparatus for removing fluid from a fibrous web
US6214167B1 (en) Twin-wire former and process for separating upper and lower wires of HTE twin-wire former
KR910002617Y1 (ko) 초지기 (秒紙機) 의 웨브 성형부의 탈수 유니트용 지지 장치
KR200151173Y1 (ko) 프레스기용 철판공급장치
JP2844904B2 (ja) 製紙機械のツインワイヤ装置
FI57138C (fi) Sned formningsdel
ES2029458T3 (es) Dispositivo para el moldeo continuo de placas de sustancias minerales, especialmente de placas de fibras de yeso, a partir de una suspension.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE ES FR GB IT

17P Request for examination filed

Effective date: 19890823

17Q First examination report despatched

Effective date: 19891106

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES FR GB IT

REF Corresponds to:

Ref document number: 66027

Country of ref document: AT

Date of ref document: 19910815

Kind code of ref document: T

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19910830

Year of fee payment: 4

REF Corresponds to:

Ref document number: 3864105

Country of ref document: DE

Date of ref document: 19910912

ITF It: translation for a ep patent filed
ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2025747

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19920824

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19970717

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970813

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980822

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990430

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19991007

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20010828

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010905

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050822