FI72364C - SCREW FOR PAPER PAPERS. - Google Patents

SCREW FOR PAPER PAPERS. Download PDF

Info

Publication number
FI72364C
FI72364C FI842626A FI842626A FI72364C FI 72364 C FI72364 C FI 72364C FI 842626 A FI842626 A FI 842626A FI 842626 A FI842626 A FI 842626A FI 72364 C FI72364 C FI 72364C
Authority
FI
Finland
Prior art keywords
blade
hose
scraper
width
support
Prior art date
Application number
FI842626A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI72364B (en
FI842626A0 (en
FI842626A (en
Inventor
Dan Eklund
Original Assignee
Waertsilae Oy Ab
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 Waertsilae Oy Ab filed Critical Waertsilae Oy Ab
Priority to FI842626A priority Critical patent/FI72364C/en
Publication of FI842626A0 publication Critical patent/FI842626A0/en
Priority to GB08516443A priority patent/GB2162771A/en
Priority to DE19853523450 priority patent/DE3523450A1/en
Priority to IT8509450A priority patent/IT8509450A0/en
Publication of FI842626A publication Critical patent/FI842626A/en
Application granted granted Critical
Publication of FI72364B publication Critical patent/FI72364B/en
Publication of FI72364C publication Critical patent/FI72364C/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/10—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/041—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for positioning, loading, or deforming the blades
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/005—Doctor knifes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/0005—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating
    • D21H5/006—Controlling or regulating
    • D21H5/0062—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper
    • D21H5/0065—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper with blades

Description

7236472364

Paperin päällystyslaitteen kaavin Tämän keksinnön kohteena on patenttivaatimuksen 1 johdannon mukainen paperin päällystyslaitteen kaavin.The present invention relates to a scraper for a paper coating device according to the preamble of claim 1.

Tällainen kaavin käsittää yleensä rungon ja tähän yhdistetyn kannattimen, johon puolestaan kaavinterä on toisesta reunastaan kiinnitetty. Kaavin on varustettu kannattimen ja terän väliin sovitetulla kuormitusletkulla, joka pullistuessaan pyrkii puristamaan terän kaavinreunaa telan yli kulkevaa käsiteltävää rainaa vasten.Such a scraper generally comprises a body and a bracket connected thereto, to which in turn a scraper blade is attached at one edge. The scraper is provided with a load hose arranged between the support and the blade, which, when bulged, tends to press the scraper edge of the blade against the web to be processed passing over the roll.

Tavanomaisessa kaavinpäällystyksessä voidaan päällystysai-neen määrää (päällystyskerroksen paksuutta) säätää mm. seu-raavilla menetelmillä: 1) Käytetään terään suoraan vaikuttavaa letkua, jonka kosketuspinta (vaikutuspinta) terän kanssa on hyvin kapea terän vapaaseen leveyteen verrattuna ja joka puristaa terää rainaa vasten eri voimalla aina sen mukaan, mikä paine letkuun kytketään. Puristusvoima voidaan myös aikaansaada epäsuorasti siten, että letku saa vaikuttaa jäykkään elementtiin, joka puolestaan siirtää voiman terään.In conventional scraper coating, the amount of coating material (thickness of the coating layer) can be adjusted e.g. by the following methods: 1) A hose acting directly on the blade is used, the contact surface (contact surface) of which with the blade is very narrow compared to the free width of the blade and which presses the blade against the web with different force depending on the pressure applied to the hose. The compressive force can also be provided indirectly so that the hose is allowed to act on a rigid element, which in turn transmits the force to the blade.

2) Terä voidaan taivuttaa jäykkää kiinteää elementtiä vasten, jolloin terän jäykkyys määrää rainaa vasten kohdistuvan voiman.2) The blade can be bent against a rigid fixed element, whereby the rigidity of the blade determines the force against the web.

3) Voidaan käyttää terän taakse vaikuttavaa alipainetta niin, että terä imeytyy rainaa vasten.3) A vacuum acting behind the blade can be used so that the blade is absorbed against the web.

Tämän keksinnön mukainen kaavin on yllä mainitun tyypin 1 mukaisen laitteen parannus.The scraper according to the present invention is an improvement of the above-mentioned type 1 device.

Keksintö perustuu siihen, että käytetään sellaista kuormi-tusletkua, jonka vaikutuspinta on terän leveyssuunnassa huomattava .The invention is based on the use of a load hose whose action surface is considerable in the width direction of the blade.

2 72364 Täsmällisemmin sanottuna keksinnön mukaiselle kaapimelle on tunnusomaista se, mikä on esitetty patenttivaatimuksen 1 tunnusmerkkiosassa.2 72364 More specifically, the scraper according to the invention is characterized by what is set forth in the characterizing part of claim 1.

Keksinnön avulla saavutetaan huomattavia etuja. Niinpä sitä voimaa, jolla terän reuna puristuu rainaa vasten, voidaan huomattavasti suurentaa, mikä mahdollistaa vähäisempien päällystyspaksuuksien käytön suurilla nopeuksilla, suuren puristuspinnan vuoksi puristusletkun elastisessa materiaalissa ja kaavinterän teräsmateriaalis-sa esiintyvien vaihteluiden haitat voidaan minimoida, mikä vähentää profilointiruuvien käytön tarvetta tai eliminoi tämän tarpeen kokonaisuudessaan, ja - perinteiseen rakenteeseen verrattuna voidaan saavuttaa suurempi terän deformoitumisaste letkun samanas-teisella venymisellä.The invention provides considerable advantages. Thus, the force with which the edge of the blade presses against the web can be greatly increased, allowing lower coating thicknesses to be used at high speeds, , and - compared to the conventional construction, a higher degree of deformation of the blade can be achieved by the same elongation of the hose.

Keksintöä ryhdytään seuraajassa lähemmin tarkastelemaan oheisen liitteen mukaisen piirustuksen avulla.The invention will be examined in more detail in the following by means of the drawing according to the appended appendix.

Kuvio 1 esittää osittain kaaviollisena profiilikuvantona yhtä keksinnön mukaisen kaapimen suoritusmuotoa.Figure 1 shows a partially schematic profile view of one embodiment of a scraper according to the invention.

Kuvio 2 esittää osittain kaaviollisena profiilikuvantona toista keksinnön mukaisen kaapimen suoritusmuotoa.Figure 2 shows a partially schematic profile view of another embodiment of a scraper according to the invention.

Kuvion 1 mukainen rakenne käsittää rungon 5, johon on yhdistetty kannatin 3. Kannattimen 3 etureunaan on sinänsä tunnetulla tavalla kiinnitetty kaavinterän 8 toinen reuna kiin-nityselimien avulla. Nämä kiinnityselimet käsittävät esimerkkitapauksessa läpimitaltaan pienehkön letkun 1, puristus-kappaleen 7 sekä vastekappaleen 6, jolloin terän 8 alareuna puristuu puristuskappaleen 7 ja vastekappaleen 6 väliin.The structure according to Figure 1 comprises a body 5 to which a bracket 3 is connected. The other edge of the scraper blade 8 is fastened to the front edge of the bracket 3 in a manner known per se by means of fastening means. These fastening members comprise, by way of example, a hose 1 of smaller diameter, a compression piece 7 and a stop piece 6, whereby the lower edge of the blade 8 is pressed between the press piece 7 and the stop piece 6.

Kannattimeen 3 on tehty terän 8 alle syvennys 4, joka on profiililtaan likimain suorakaiteen muotoinen ja ulottuu terän li 3 72364 8 leveyssuunnassa ainakin puolen teräleveyden yli. Syvennykseen eli istukkaan 4 on sovitettu kumista, elastisesta materiaalista, esim. valmistettu kuormitusletku 2, jonka profiili myötäilee istukan 4 profiilia niin, että letkun 2 terää 8 vasten tuleva pinta tasaisesti painaa terää 8 vasten. Kun kuormitusletkun 2 painetta lisätään, puristusvoima tulee näin ollen vaikuttamaan terän 8 pintaan yli puolen teräleveyden matkalta.The bracket 3 is made of blade 8 under the recess 4, which is approximately rectangular in profile and extends in the shape of a blade li 3 72364 8 in the width direction at least over half the width of the blade. A recess, i.e. a seat 4, made of a rubber, elastic material, is arranged in the recess, i.e. the seat 4, the profile of which follows the profile of the seat 4 so that the surface of the hose 2 against the blade 8 evenly presses against the blade 8. When the load pressure is increased tube 2, the clamping force will, therefore, affect the surface of the blade 8 than half the width of the blade length.

Kuviossa 2 esitetty vaihtoehtoinen ratkaisu on edellistä sikäli yksinkertaisempi, että siinä runko 5 ja kannatin 3 ovat samaa kappaletta ja kiinnityslaitteena on rungossa oleva ura 9, johon terän 8 alareuna on työnnetty. Istukkaosa 4 on tässä tapauksessa sisäosastaan jonkin verran pyöristetty, mutta kuormitusletkun 2 toiminta on tässä analoginen kuvion 1 kanssa.The alternative solution shown in Fig. 2 is simpler than the previous one in that the body 5 and the support 3 are the same piece and the fastening device is a groove 9 in the body into which the lower edge of the blade 8 is inserted. In this case, the seat part 4 is somewhat rounded from its inner part, but the operation of the load hose 2 is here analogous to Fig. 1.

Kun keksinnön mukaisesti kuormitusletkun vaikutusalue ulottuu vähintään puolen vapaan teräleveyden yli, tämä vaikutusalue on sopivasti noin 70...80 % tuosta vapaasta teräleveydestä, sopivimmin noin 75 %.When the loading hose in accordance with the scope of the invention extends at least over the width of the free edge side, this impact area is suitably from about 70 ... 80% of that on the free edge of the width, preferably about 75%.

Claims (4)

4 723644 72364 1. Paperin päällystyslaitteen kaavin (1 - 8), joka käsittää rungon (5), runkoon (5) yhdistetyn kannattimen (3), kannattimeen (3) kiinnitetyn terän (8), kiinnityselimet (1, 6, 7) terän rungon (5) puoleisen reunan kiinnittämiseksi kannattimeen (3) sekä kannattimen (3) ja terän (8) väliin sovitetun pneumaattisen kuormitusletkun (2) terän (8) kuormittamiseksi, tunnettu siitä, että kuormitusletku (2) ulottuu terän (8) leveyssuunnassa ainakin puolen vapaan teräleveyden yli.A scraper (1-8) of a paper coating device comprising a body (5), a support (3) connected to the body (5), a blade (8) attached to the support (3), fastening means (1, 6, 7) and a blade body (5) ) to the side edge of the carrier (3) and the support (3) arranged between the knife (8) of the pneumatic loading tube (2) of the blade (8) for loading, characterized in that the loading hose (2) extends from the blade (8) has a width and depth at least beyond the free edge width of the side . 2. Patenttivaatimuksen 1 mukainen kaavin, tunnettu siitä, että kuormitusletkun (2) ja terän (8) välinen kosketuspinta on 70...80 ja sopivimmin n. 75 % teräleveydestä.Scraper according to Claim 1, characterized in that the contact surface between the load hose (2) and the blade (8) is 70 to 80 and preferably about 75% of the blade width. 3. Patenttivaatimuksen 1 mukainen kaavin, tunnettu siitä, että kannattimessa (3) on kuormitusletkun (2) profiilia myötäilevä istukka (4).Scraper according to Claim 1, characterized in that the support (3) has a seat (4) which follows the profile of the load hose (2). 4. Patenttivaatimuksen 3 mukainen kaavin, tunnettu siitä, että istukka (4) ja kuormitusletku (2) ovat profiililtaan ainakin likimain suorakulmion muotoiset.Scraper according to Claim 3, characterized in that the seat (4) and the load hose (2) have an at least approximately rectangular profile.
FI842626A 1984-06-29 1984-06-29 SCREW FOR PAPER PAPERS. FI72364C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI842626A FI72364C (en) 1984-06-29 1984-06-29 SCREW FOR PAPER PAPERS.
GB08516443A GB2162771A (en) 1984-06-29 1985-06-28 Doctor blade mounting assembly
DE19853523450 DE3523450A1 (en) 1984-06-29 1985-06-29 DEVICE FOR ATTACHING SPRAY BLADES FOR PAPER COATING MACHINES
IT8509450A IT8509450A0 (en) 1984-06-29 1985-07-01 ASSEMBLY ASSEMBLY FOR SCRAPER BLADE IN PAPER COATING MACHINES

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI842626 1984-06-29
FI842626A FI72364C (en) 1984-06-29 1984-06-29 SCREW FOR PAPER PAPERS.

Publications (4)

Publication Number Publication Date
FI842626A0 FI842626A0 (en) 1984-06-29
FI842626A FI842626A (en) 1985-12-30
FI72364B FI72364B (en) 1987-01-30
FI72364C true FI72364C (en) 1987-05-11

Family

ID=8519326

Family Applications (1)

Application Number Title Priority Date Filing Date
FI842626A FI72364C (en) 1984-06-29 1984-06-29 SCREW FOR PAPER PAPERS.

Country Status (4)

Country Link
DE (1) DE3523450A1 (en)
FI (1) FI72364C (en)
GB (1) GB2162771A (en)
IT (1) IT8509450A0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH676694A5 (en) * 1987-07-06 1991-02-28 Juerg Holderegger
DE102005029613A1 (en) * 2005-06-23 2007-01-04 Voith Patent Gmbh Device for metering and / or leveling

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4532158A (en) * 1981-04-09 1985-07-30 St. Regis Paper Company Apparatus for and a method of metering of coating on a moving web
US4405661A (en) * 1981-09-10 1983-09-20 Beloit Corporation Blade type fountain coater and method
DE3313972A1 (en) * 1983-04-18 1984-10-18 Jagenberg AG, 4000 Düsseldorf DEVICE FOR PRELOADING AND PRELOADING AN ELASTIC METAL KNIFE

Also Published As

Publication number Publication date
GB2162771A (en) 1986-02-12
GB8516443D0 (en) 1985-07-31
IT8509450A0 (en) 1985-07-01
FI72364B (en) 1987-01-30
DE3523450A1 (en) 1986-01-09
FI842626A0 (en) 1984-06-29
FI842626A (en) 1985-12-30

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Owner name: VALMET PAPER MACHINERY INC