EP0352440B1 - Dispositif pour l'enduction en continu d'un matériau en bande passant sur un contre-rouleau - Google Patents
Dispositif pour l'enduction en continu d'un matériau en bande passant sur un contre-rouleau Download PDFInfo
- Publication number
- EP0352440B1 EP0352440B1 EP89109895A EP89109895A EP0352440B1 EP 0352440 B1 EP0352440 B1 EP 0352440B1 EP 89109895 A EP89109895 A EP 89109895A EP 89109895 A EP89109895 A EP 89109895A EP 0352440 B1 EP0352440 B1 EP 0352440B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- doctor
- bar
- blade
- doctor blade
- clamping
- 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
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 13
- 238000000576 coating method Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000011111 cardboard Substances 0.000 claims abstract description 3
- 239000011087 paperboard Substances 0.000 claims abstract description 3
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
Images
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
- B05C11/042—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 allowing local positioning, loading or deforming along the blades
Definitions
- the invention relates to a device for the continuous coating of a web of material guided around a counter roller, in particular a paper or cardboard web, according to the preamble of claim 1.
- the contact pressure of the scraper knife against the counter roller required to set a desired coating weight is generated by an elastic deformation of the scraper knife between its foot clamped in the scraper knife and its tip, the change in the blade angle due to the deformation being kept as small as possible.
- a coating device which is very advantageous in this respect is described in DE-C-28 25 907.
- the deformation is achieved by the in a Clamping bar clamped scraper blade is moved linearly, the scraper knife being supported by a support bar which remains unchanged when the clamping bar is moved.
- relatively small movements of the clamping bar produce large changes in the contact pressure, so that the influence on the blade angle is so small that practically without exception there are no qualitative disadvantages.
- the S-shaped deformation of the scraper knife achieves very good transverse stability of the knife blade even with the slightest contact forces, which is of crucial importance for the quality of the line profiles transverse to the running direction of the material web.
- the invention is therefore based on the object of providing a generic coating device in which the constancy of the blade angle is further improved when the bias voltage changes.
- the material web 1 to be coated e.g. a paper web, in the direction of the arrow around a counter roller 2.
- the coating material applied in excess from a coating unit (not shown) to the material web 1 is metered to the desired coat weight by the metering system described in more detail below.
- the side frame 5, together with the scraper bar 4 can be pivoted away about the axis 7 from the counter roller 2 for cleaning or for changing a scraper knife.
- a clamping bar 8 is integrated in the scraper bar 4 and can be adjusted in a straight line by means of a screw jack 9 - in the swiveled-in position approximately in the horizontal direction.
- the scraper knife 3 is clamped with its foot in the clamping bar 8, an angle of 70 ° -80 °, preferably approximately 75 °, being established between the scraper knife 3 and the direction of movement of the clamping bar 8.
- a support bar 10 is fastened to the scraper bar 4, against which the scraper knife 3 rests and which can be adjusted to a specific transverse profile with adjusting screws 11 arranged at regular intervals over the working width.
- the pivoting of the scraper bar 4 for setting a specific bar angle is carried out by means of a screw jack 12.
- the straight adjustment of the clamping bar 8 is directly mechanically coupled to the bar angle setting.
- a second spindle lifting mechanism 13 is used, which sits above the first lifting mechanism 12 on the rotationally fixed spindle 14.
- the axial adjustment of the spindle 14 articulated on a lever-like extension 15 is carried out with worm wheels 16 and 17, respectively, the worm wheel 16 of the lower spindle lifting mechanism 12 being connected to a servomotor.
- the worm wheel 17 of the upper screw jack is coupled with a fixed transmission ratio to the driven worm wheel 18 of the screw jack 9 for the clamping bar adjustment.
- the coupling is carried out with toothed belt 19, and the use of cardan shafts or a bevel gear is also possible.
- the direct mechanical coupling of the clamping beam adjustment with the beam angle setting has the effect that when the clamping beam 8 is adjusted with the worm wheel 18, a proportional change in the beam angle with the spindle 14 corresponding to the selected transmission ratio takes place.
- the bar angle is adjusted by an electric motor as a function of the adjustment of the clamping bar 8.
- a microprocessor 21 is connected to a pulse counter with which the servomotor 20 of the spindle lifting mechanism 9 is controlled for the clamping beam adjustment, which controls the required correction of the beam angle depending on the clamping beam adjustment via the drive 22 of the spindle lifting mechanism 12.
- a corresponding correction of the bar angle is assigned to each position of the base point of the scraper knife 3, which compensates for a change in the blade angle due to the base point adjustment.
- This electronic solution which is more complex than the embodiment according to FIG. 1, has the advantage that time-dependent changes, e.g. the wear of the doctor blade 3, and other parameters that influence the blade angle - e.g. elastic deformation of the roll surface, support length, average beam angle - can be taken into account as parameters in the calculation of the beam angle correction and can be varied if necessary.
- the doctor bar 4 is pivoted in the direction of the counter roller 2 until the tip of the doctor knife 3 lies against the material web 1.
- the desired beam angle is then set with the screw jack 12.
- the clamping bar 8 is now moved in a straight line away from the counter roller 2 with the spindle lifting mechanism 9. Since the support bar 10 remains unchanged during this movement, the scraper knife 3 curves in an S-shape and its tip is pressed against the material web 2. Due to the deformation, a slight change in the blade angle occurs in the area between the support bar 10 and the metering line 6.
- a deviation of 15 ° compared to a doctor blade 3 clamped perpendicularly against the adjustment direction of the clamping bar 8 has the effect that the change in the blade angle due to the deformation is approximately proportional to the usable clamping bar displacement. It can therefore be compensated for by a proportional change in the beam angle. In the embodiment according to FIG. 1, this is carried out with a simple mechanical coupling.
- the pulse counter reports a corresponding number of travel pulses to the microprocessor 21, which at the same time controls the drive 22 of the screw jack 12 according to a previously defined correction curve and thus likewise swivels the scraper bar 4 by the required angle correction .
Landscapes
- Coating Apparatus (AREA)
- Paper (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Claims (6)
- Dispositif pour l'enduisage continu d'une bande de matière (1), en particulier d'une bande de papier ou de carton, guidée autour d'un contre-cylindre (2),- avec un racloir élastique (3), qui est fixé par son pied dans une barre de serrage (8), laquelle est montée réglable sur un barreau porte-lame (4) inclinable,- avec un élément (10) pour appuyer le racloir (3) au-dessus de la barre de serrage (8) sur la face située à l'opposé du contre-cylindre (2),- dans lequel pour le réglage de la pression d'application du racloir sur le contre-cylindre (2) la barre de serrage (8) est déplaçable par rapport au barreau porte-lame (4) indépendamment de l'élément d'appui (10),caractérisé par des moyens qui, lors d'un déplacement de la barre de serrage (8), compensent la variation de l'angle du sommet du racloir qui en résulte par inclinaison du barreau porte-lame (4).
- Dispositif suivant la revendication 1, caractérisé en ce que le barreau porte-lame (4) est inclinable autour de la ligne d'application (6) du racloir (3) sur le contre-cylindre (2).
- Dispositif suivant la revendication 1 ou 2, caractérisé en ce que le dispositif de déplacement de la barre de serrage (8) est couplé mécaniquement au dispositif d'inclinaison du barreau porte-lame (4).
- Dispositif suivant la revendication 1 ou 2, caractérisé par un couplage électronique des dispositifs de déplacement de la barre de serrage (8) et d'inclinaison du barreau porte-lame (4).
- Dispositif suivant l'une ou l'autre des revendications 1 à 4, caractérisé en ce que le point du pied du racloir est déplaçable en ligne droite sous un angle aigu par rapport au racloir (3).
- Dispositif suivant la revendication 5, caractérisé en ce que l'angle entre le racloir (3) non déformé et le sens du mouvement du point du pied vaut 70° - 80°, et de préférence environ 75°, et caractérisé en plus par des moyens pour le réglage proportionnel de l'angle du barreau porte-lame en fonction du déplacement de la barre de serrage.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3825816A DE3825816A1 (de) | 1988-07-29 | 1988-07-29 | Vorrichtung zum kontinuierlichen beschichten einer um eine gegenwalze gefuehrten materialbahn |
DE3825816 | 1988-07-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0352440A2 EP0352440A2 (fr) | 1990-01-31 |
EP0352440A3 EP0352440A3 (fr) | 1991-05-08 |
EP0352440B1 true EP0352440B1 (fr) | 1992-10-28 |
Family
ID=6359846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89109895A Expired - Lifetime EP0352440B1 (fr) | 1988-07-29 | 1989-06-01 | Dispositif pour l'enduction en continu d'un matériau en bande passant sur un contre-rouleau |
Country Status (5)
Country | Link |
---|---|
US (1) | US4966093A (fr) |
EP (1) | EP0352440B1 (fr) |
AT (1) | ATE81803T1 (fr) |
DE (2) | DE3825816A1 (fr) |
FI (1) | FI100312B (fr) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3927329A1 (de) * | 1989-08-18 | 1991-02-21 | Jagenberg Ag | Vorrichtung zum beschichten einer um eine gegenwalze gefuehrten materialbahn |
FI90319C (fi) * | 1989-10-09 | 1994-01-25 | Valmet Paper Machinery Inc | Menetelmä paperi- tai kartonkiradan kosteusprofiilin säätämiseksi liimapuristimessa ja menetelmän toteuttava filmiliimapuristin |
DE3934986A1 (de) * | 1989-10-20 | 1991-04-25 | Jagenberg Ag | Vorrichtung zum beschichten einer um eine gegenwalze gefuehrten materialbahn |
DE3937322A1 (de) * | 1989-11-09 | 1991-05-16 | Zanders Feinpapiere Ag | Verfahren zum betrieb einer streicheinrichtung |
SE9102783L (sv) * | 1991-09-25 | 1992-12-21 | Btg Kaelle Inventing Ab | Anordning och foerfarande foer bladbestrykning av en loepande bana |
FI91298C (fi) * | 1992-04-10 | 1994-06-10 | Valmet Paper Machinery Inc | Menetelmä materiaalirainan päällystämiseksi |
US5242498A (en) * | 1992-08-04 | 1993-09-07 | The Kohler Coating Machinery Corporation | Adjustable blade coater |
CA2136185C (fr) * | 1992-08-14 | 2002-11-05 | Robert J. Marinack | Augmentation de la charge au crepage avec maintien du rapport angulaire |
US6077352A (en) * | 1992-09-02 | 2000-06-20 | Consolidated Papers, Inc. | Mounting assembly for a single backing roll coating station |
FI94269C (fi) * | 1993-04-16 | 1995-08-10 | Valmet Paper Machinery Inc | Menetelmä ja sovitelma kaavinterän kuormittamiseksi |
DE4418464C2 (de) * | 1994-05-27 | 1995-07-06 | Voith Ag J M | Klingenhalterung |
DE19619250A1 (de) * | 1996-05-13 | 1997-11-20 | Voith Sulzer Papiermasch Gmbh | Vorrichtung und Verfahren zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton |
DE19734718A1 (de) * | 1997-08-11 | 1999-02-18 | Voith Sulzer Papiermasch Gmbh | Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn |
DE19812929A1 (de) * | 1998-03-24 | 1999-09-30 | Voith Sulzer Papiertech Patent | Vorrichtung zum Egalisieren oder/und Dosieren einer auf einen Untergrund aufgebrachten Schicht eines flüssigen oder pastösen Auftragsmediums |
CN104069992B (zh) * | 2014-07-04 | 2016-11-02 | 深圳市泰仁恩科技有限公司 | 一种涂布刮刀的组装结构 |
CN110976134B (zh) * | 2019-11-17 | 2020-11-27 | 杨滋垚 | 一种复合材料纺织布制造设备 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3113890A (en) * | 1961-06-26 | 1963-12-10 | Kimberly Clark Co | Apparatus for smoothing coating materials on a paper web |
US3128207A (en) * | 1961-09-07 | 1964-04-07 | Beloit Iron Works | Trailing blade coater blade loading mechanism |
US4153865A (en) * | 1977-06-27 | 1979-05-08 | The Bendix Corporation | Dynamically compensated servo monitor |
DE2825907B2 (de) * | 1978-06-13 | 1981-02-26 | Jagenberg-Werke Ag, 4000 Duesseldorf | Vorrichtung zum Aufbringen einer Beschichtung auf eine Materialbahn |
DE2845036A1 (de) * | 1978-10-16 | 1980-04-17 | Jagenberg Werke Ag | Vorrichtung zum kontinuierlichen gleichzeitigen aufbringen von beschichtungen konstanter dicken auf beide seiten einer materialbahn |
DE2913421C3 (de) * | 1979-04-04 | 1982-04-29 | J.M. Voith Gmbh, 7920 Heidenheim | Verfahren und Vorrichtung zum Abstreifen von überschüssiger Streichmasse von einer laufenden Bahn |
DE3017274C2 (de) * | 1980-05-06 | 1985-07-18 | Jagenberg-Werke AG, 4000 Düsseldorf | Vorrichtung zum Streichen von Papierbahnen |
DE3236755A1 (de) * | 1982-10-05 | 1984-04-12 | J.M. Voith Gmbh, 7920 Heidenheim | Streicheinrichtung fuer laufende warenbahnen, insbesondere papierbahnen |
DE3311999A1 (de) * | 1983-04-02 | 1984-10-11 | J.M. Voith Gmbh, 7920 Heidenheim | Streicheinrichtung zur beschichtung laufender warenbahnen |
DE3313972A1 (de) * | 1983-04-18 | 1984-10-18 | Jagenberg AG, 4000 Düsseldorf | Vorrichtung zum ein- und vorspannen eines elastischen streichmessers |
DE3513063A1 (de) * | 1985-04-12 | 1986-10-16 | Jagenberg AG, 4000 Düsseldorf | Streicheinrichtung zur beschichtung von entlang einer gegenwalze gefuehrten warenbahn, insbesondere papierbahnen |
-
1988
- 1988-07-29 DE DE3825816A patent/DE3825816A1/de not_active Withdrawn
-
1989
- 1989-06-01 DE DE8989109895T patent/DE58902546D1/de not_active Expired - Fee Related
- 1989-06-01 EP EP89109895A patent/EP0352440B1/fr not_active Expired - Lifetime
- 1989-06-01 AT AT89109895T patent/ATE81803T1/de not_active IP Right Cessation
- 1989-07-25 US US07/385,345 patent/US4966093A/en not_active Expired - Lifetime
- 1989-07-28 FI FI893620A patent/FI100312B/fi not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0352440A3 (fr) | 1991-05-08 |
ATE81803T1 (de) | 1992-11-15 |
DE3825816A1 (de) | 1990-02-01 |
FI100312B (fi) | 1997-11-14 |
US4966093A (en) | 1990-10-30 |
FI893620A0 (fi) | 1989-07-28 |
FI893620A (fi) | 1990-01-30 |
DE58902546D1 (de) | 1992-12-03 |
EP0352440A2 (fr) | 1990-01-31 |
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