EP0426980A2 - Procédé et arrangement de fonctionnement d'un dispositif d'application - Google Patents
Procédé et arrangement de fonctionnement d'un dispositif d'application Download PDFInfo
- Publication number
- EP0426980A2 EP0426980A2 EP90117798A EP90117798A EP0426980A2 EP 0426980 A2 EP0426980 A2 EP 0426980A2 EP 90117798 A EP90117798 A EP 90117798A EP 90117798 A EP90117798 A EP 90117798A EP 0426980 A2 EP0426980 A2 EP 0426980A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- doctor element
- doctor
- coating edge
- signal
- 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
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 46
- 238000000576 coating method Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 7
- 230000005291 magnetic effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims 1
- 239000000969 carrier Substances 0.000 claims 1
- 230000005855 radiation Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000002604 ultrasonography Methods 0.000 claims 1
- 239000011324 bead Substances 0.000 abstract description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052753 mercury Inorganic materials 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000010408 sweeping Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- 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
Definitions
- the invention relates to a method for operating a coating device and suitable arrangements therefor.
- the setting accuracy of blade coaters can be checked and the movements of the blade can be measured under production conditions.
- This enables a closed control loop to be set up for the blade coater, so that under all operating conditions - blade wear, influence of the counter roller, pressure from the coating ink on the blade - a specified target angle of the blade blade can be exactly maintained.
- This constant angularity of the blade at the tip of the blade is the most important prerequisite for maintaining a constant line quality and quantity.
- the aim of the invention is to detect and correct all changes in the blade angle.
- a desired setpoint angle can be measured precisely and maintained via a control under all operating conditions.
- FIG. 1b in principle show the side view of the application and in FIG. 1 the doctor element, which is known in the known manner as a coating blade, is designated by 1 and its coating edge, by means of which it wipes and doses a coating compound, with 18.
- An angle a to a horizontal line H of the coating edge 18 is indicated.
- An inclination switch 2 is used to detect this angle or deviations from this angle.
- This consists of a glass bulb 3 in which a mercury bead 4 is located.
- Two parallel wire electrodes 5 and 6 are inserted into the glass bulb with approximately the same length. If the coating blade deviates in its area close to the coating edge 18, the tilt switch 2 also deviates from the exactly horizontal position, so that the mercury bead either moves in the direction of the two electrodes or away from them.
- the inclination switches are fastened to a permanent magnet 7 by means of an adhesive 8, which then adheres to the metallic doctor blade in a simple manner.
- an adhesive 8 which then adheres to the metallic doctor blade in a simple manner.
- coating blades are made of spring steel.
- FIG. 2 shows a section of a coating device in which a coating blade 1 of the type described in FIG. 1 is installed.
- the counter roller to which the coating blade 1 can be pressed by means of a pressure hose 11, is indicated by 15 in dash-dot lines.
- the pneumatic pressure hose 11 is held in a holder 9 which is fastened to a supporting beam 28 which carries the entire coating device.
- the doctor blade 1 is pressed against a counter piece 12 by means of a further pneumatic pressure hose 10.
- a mouth 14 for coating slip is indicated, which is either applied directly to a roller 15 or to a paper web guided by the latter and then scraped off the coating edge of the coating blade 1.
- the tilt switch 2 is on an angle-adjustable holding frame which has two mutually angle-adjustable arms 16 and 17, of which one arm 16 is attached to a permanent magnet 7 '.
- the angular position of the arm 17 and thus also of the inclination switch 2 relative to the arm 16 is set by means of a joint 19, which can preferably be designed to be lockable.
- This device is also favorable for particularly tight spaces in the area of the brush edge 18 of the coating blade 1
- a sleeve (glass bulb) with an electrolyte fluid could also be used as the tilt switch, a circuit also being closed via electrodes.
- Magnetic liquids or magnetic solids are also suitable.
- the movement is measured with coils or Hall probes.
- the angle piece 21 can, for example, be a ferromagnetic, magnetized material so that it adheres to the metal leaf spring (blade) 1. Its corner angle in the area of the coating blade 1 can be dimensioned according to the specified positions of the horizontal H and the tangent T in the contact point of the coating surface on the counter roller 15.
- the light from this diode - or from a laser - can also be used as a light pointer, or its intensity deviations, which occur when the blade angle is changed in a light receiver, such as a photodiode, can be used as a signal.
- FIG. 4 shows a counter roller 15 around which a paper web 32 runs.
- An application roller 33 applies coating compound to the web 32.
- a doctor blade 1 wipes off excess coating compound. It is held by a blade holder 35.
- a rod-shaped pressure element 36 presses against the doctor blade 1, so that its free end 37 is pressed into the coating material on the web 32.
- the free blade end 37 is provided on the end face with the blade sweeping surface 18, which runs essentially parallel to the web surface in the direction of web travel. This can be seen from Figures 2 and 3.
- the blade holder 35 is seated on a beam support 30 and can be pivoted together with the latter about an axis 41, the pivot axis of which, viewed in a side view, is essentially flush with the front blade sweeping surface 18.
- the pivoting takes place via a linkage element 42 by a motor 43 with a gear 44.
- the motor 43 with the gear 44 and the blade holder 35 are seated on a further pivot axis 45 and can be pivoted away from the counter roller 15 about this pivot axis 45.
- one end of a pivot lever 46 is attached to the pivot axis 45, the other end of which carries the first-mentioned pivot axis 41.
- the force exerted by the pressure element 36 on the doctor blade 1 results from the pressure difference between two compressed gas hoses 47.
- the pressure difference is set by a differential pressure measuring device 51 via hose 49, controlled by a control apparatus 60.
- One of the respective angular positions of the coating blade is determined by the signal sensor or receiver 25 1 corresponding signal given via line 50 to a signal processor 51; whose output signal reaches a controller 53 via line 52, which is a function of the measured Win kel changes on a line 54 outputs appropriate control signals to the servomotor 43.
- the motor 43 pivots the blade holder 35 about the pivot axis 41 in such a way that the front blade sweeping surface 9 always remains parallel to the web surface, even when the contact pressure changes, as seen in the direction of movement of the web 32.
- the center line of the pivot axis 41 is essentially aligned with the end face of the blade sweeping surface 18.
Landscapes
- Coating Apparatus (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Sink And Installation For Waste Water (AREA)
- Photographic Developing Apparatuses (AREA)
- Transplanting Machines (AREA)
- Fixing For Electrophotography (AREA)
- Road Signs Or Road Markings (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Manufacturing Of Electric Cables (AREA)
- Threshing Machine Elements (AREA)
- Push-Button Switches (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Saccharide Compounds (AREA)
- General Preparation And Processing Of Foods (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3937322 | 1989-11-09 | ||
DE3937322A DE3937322A1 (de) | 1989-11-09 | 1989-11-09 | Verfahren zum betrieb einer streicheinrichtung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0426980A2 true EP0426980A2 (fr) | 1991-05-15 |
EP0426980A3 EP0426980A3 (en) | 1991-11-06 |
EP0426980B1 EP0426980B1 (fr) | 1995-03-29 |
Family
ID=6393199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90117798A Expired - Lifetime EP0426980B1 (fr) | 1989-11-09 | 1990-09-15 | Procédé et arrangement de fonctionnement d'un dispositif d'application |
Country Status (9)
Country | Link |
---|---|
US (1) | US5221351A (fr) |
EP (1) | EP0426980B1 (fr) |
JP (1) | JPH03267168A (fr) |
AT (1) | ATE120387T1 (fr) |
BR (1) | BR9005523A (fr) |
CA (1) | CA2029663C (fr) |
DE (2) | DE3937322A1 (fr) |
FI (1) | FI107028B (fr) |
NO (1) | NO176127C (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4313889A1 (de) * | 1993-04-28 | 1993-10-21 | Voith Gmbh J M | Streicheinrichtung für laufende Bahnen aus Papier oder Karton |
DE19731947A1 (de) * | 1997-07-24 | 1999-01-28 | Voith Sulzer Papiermasch Gmbh | Verfahren zum Steuern bzw. Regeln einer Vorrichtung zum Auftragen eines flüssigen oder pastösen Mediums auf eine Gegenfläche |
WO2001020077A1 (fr) * | 1999-09-14 | 2001-03-22 | Metso Paper, Inc. | Unite de racloir dans une machine a papier |
EP2789734A1 (fr) * | 2013-04-09 | 2014-10-15 | Valmet Technologies, Inc. | Ensemble pour un dispositif de ligne de production de bande de fibre |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4124988C2 (de) * | 1991-07-27 | 1995-06-22 | Voith Gmbh J M | Streicheinrichtung mit Klingennachstellung |
SE469034B (sv) * | 1991-09-02 | 1993-05-03 | Valmet Karlstad Ab | Anordning foer justering av kraeppningsbetingelserna |
SE469035B (sv) * | 1991-09-16 | 1993-05-03 | Valmet Karlstad Ab | Foerfarande och anordning foer justering av kraeppningsbetingelserna |
US5242498A (en) * | 1992-08-04 | 1993-09-07 | The Kohler Coating Machinery Corporation | Adjustable blade coater |
DE4302373A1 (de) * | 1993-01-28 | 1994-08-04 | Voith Gmbh J M | Streicheinrichtung für laufende Bahnen aus Papier oder Karton |
US5496407A (en) * | 1993-04-19 | 1996-03-05 | Mcaleavey; Michael E. | System and method for monitoring and controlling thickness |
US5500641A (en) * | 1994-07-22 | 1996-03-19 | Glens'son | Safety switch device for use in manufacture of round cylindrical vessels |
DE19715117A1 (de) * | 1997-04-11 | 1998-10-15 | Voith Sulzer Papiermasch Gmbh | Vorrichtung und Verfahren zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn |
DE29707991U1 (de) * | 1997-05-03 | 1997-07-03 | EMWE GmbH, 97483 Eltmann | Vorrichtung zum Messen der relativen Positionierung einer Schaberklinge zu einer Walze einer Papiermaschine |
DE19751098C2 (de) * | 1997-11-18 | 2003-02-20 | Voith Paper Patent Gmbh | Verfahren und Vorrichtung zum Verstellen eines langgestreckten, sich in Breitenrichtung einer laufenden Materialbahn erstreckenden Bauteils |
DE10358221A1 (de) * | 2003-12-12 | 2005-07-07 | Voith Paper Patent Gmbh | Rakelvorrichtung |
US7676298B2 (en) * | 2005-06-08 | 2010-03-09 | Crc For Advanced Composite Structures Limited | Method and apparatus for surface shaping of polymer composite components |
EP2883999B1 (fr) | 2013-12-11 | 2016-04-20 | Garcia Xabier Echeverria | Racle pour une machine à papier |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2046137A (en) * | 1979-04-04 | 1980-11-12 | Voith Gmbh J M | Automatically adjustable doctor blade |
CH669996A5 (en) * | 1986-04-14 | 1989-04-28 | Felix Artho | Instrument for measuring surface inclination - has mobile arm with internal source emitting light along arm axis and array of photodetectors giving signal related to arm position |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2555669C3 (de) * | 1975-12-11 | 1984-10-18 | J.M. Voith Gmbh, 7920 Heidenheim | Vorrichtung zum Abstreifen überschüssiger Streichmasse |
US4493158A (en) * | 1981-10-13 | 1985-01-15 | Koninklijke Nederlandse Papierfabrieken N.V. | Method and apparatus for removing condensate from a cylinder, in particular a cylinder for drying paper |
SE447545B (sv) * | 1985-06-12 | 1986-11-24 | Inventing Ab | Sett och anordning vid bladbestrykning av en lopande materialbana |
US4755806A (en) * | 1987-03-09 | 1988-07-05 | Villarreal Juan M | Movement sensor |
US4906335A (en) * | 1987-06-08 | 1990-03-06 | Thermo Electron Web System, Inc. | Doctoring apparatus |
US4884067A (en) * | 1987-08-13 | 1989-11-28 | Talkie Tooter (Canada) Ltd. | Motion and position sensing alarm |
FI82733C (fi) * | 1987-09-07 | 1991-04-10 | Valmet Paper Machinery Inc | Vinkelkompensationsanordning foer schaberblad. |
DE3825816A1 (de) * | 1988-07-29 | 1990-02-01 | Jagenberg Ag | Vorrichtung zum kontinuierlichen beschichten einer um eine gegenwalze gefuehrten materialbahn |
US4919756A (en) * | 1988-08-26 | 1990-04-24 | The Procter & Gamble Company | Method of and apparatus for compensatingly adjusting doctor blade |
-
1989
- 1989-11-09 DE DE3937322A patent/DE3937322A1/de not_active Withdrawn
-
1990
- 1990-09-15 AT AT90117798T patent/ATE120387T1/de not_active IP Right Cessation
- 1990-09-15 EP EP90117798A patent/EP0426980B1/fr not_active Expired - Lifetime
- 1990-09-15 DE DE59008798T patent/DE59008798D1/de not_active Expired - Fee Related
- 1990-10-25 BR BR909005523A patent/BR9005523A/pt not_active IP Right Cessation
- 1990-10-31 FI FI905384A patent/FI107028B/fi not_active IP Right Cessation
- 1990-11-07 JP JP2302288A patent/JPH03267168A/ja active Pending
- 1990-11-07 NO NO904836A patent/NO176127C/no unknown
- 1990-11-09 CA CA002029663A patent/CA2029663C/fr not_active Expired - Fee Related
- 1990-11-09 US US07/612,114 patent/US5221351A/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2046137A (en) * | 1979-04-04 | 1980-11-12 | Voith Gmbh J M | Automatically adjustable doctor blade |
CH669996A5 (en) * | 1986-04-14 | 1989-04-28 | Felix Artho | Instrument for measuring surface inclination - has mobile arm with internal source emitting light along arm axis and array of photodetectors giving signal related to arm position |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4313889A1 (de) * | 1993-04-28 | 1993-10-21 | Voith Gmbh J M | Streicheinrichtung für laufende Bahnen aus Papier oder Karton |
EP0622492A2 (fr) * | 1993-04-28 | 1994-11-02 | J.M. Voith GmbH | Dispositif d'enduction pour une bande en mouvement de papier ou carton |
EP0622492A3 (en) * | 1993-04-28 | 1994-11-17 | Voith Gmbh J M | Coating device for a travelling web of paper or cardboard. |
US5453128A (en) * | 1993-04-28 | 1995-09-26 | J. M. Voith Gmbh | Coating system for running webs of paper or cardboard |
DE19731947A1 (de) * | 1997-07-24 | 1999-01-28 | Voith Sulzer Papiermasch Gmbh | Verfahren zum Steuern bzw. Regeln einer Vorrichtung zum Auftragen eines flüssigen oder pastösen Mediums auf eine Gegenfläche |
WO2001020077A1 (fr) * | 1999-09-14 | 2001-03-22 | Metso Paper, Inc. | Unite de racloir dans une machine a papier |
US7108766B1 (en) | 1999-09-14 | 2006-09-19 | Metso Paper, Inc. | Doctor unit in a paper machine |
EP2789734A1 (fr) * | 2013-04-09 | 2014-10-15 | Valmet Technologies, Inc. | Ensemble pour un dispositif de ligne de production de bande de fibre |
Also Published As
Publication number | Publication date |
---|---|
EP0426980B1 (fr) | 1995-03-29 |
NO904836D0 (no) | 1990-11-07 |
US5221351A (en) | 1993-06-22 |
CA2029663C (fr) | 1996-11-26 |
NO176127C (no) | 1995-02-08 |
BR9005523A (pt) | 1991-09-17 |
DE3937322A1 (de) | 1991-05-16 |
FI905384A0 (fi) | 1990-10-31 |
FI107028B (fi) | 2001-05-31 |
DE59008798D1 (de) | 1995-05-04 |
ATE120387T1 (de) | 1995-04-15 |
JPH03267168A (ja) | 1991-11-28 |
NO176127B (no) | 1994-10-31 |
CA2029663A1 (fr) | 1991-05-10 |
NO904836L (no) | 1991-05-10 |
EP0426980A3 (en) | 1991-11-06 |
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