EP0278373B1 - Lance pour balayer de façon continue des surfaces en mouvement - Google Patents
Lance pour balayer de façon continue des surfaces en mouvement Download PDFInfo
- Publication number
- EP0278373B1 EP0278373B1 EP88101512A EP88101512A EP0278373B1 EP 0278373 B1 EP0278373 B1 EP 0278373B1 EP 88101512 A EP88101512 A EP 88101512A EP 88101512 A EP88101512 A EP 88101512A EP 0278373 B1 EP0278373 B1 EP 0278373B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- gas
- slot
- covering elements
- mouthpiece
- 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 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 1
- 230000009969 flowable effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
Definitions
- the invention relates to a coating device with the features of the preamble of patent claim 1.
- nozzles are arranged on both sides of the strip sheet running out of the coating bath, the nozzle slots of which extend over the full working width of the device, the nozzle slots of the opposing nozzles lying opposite one another. They are covered against each other by the band plate running between them.
- strip material is processed, the width of which is less than the maximum working width of the device, gas is blown out of the opposing nozzles on at least one side of the strip material, which gas is ineffective for stripping or blowing off coating agents from the surfaces of the strip material.
- This not only leads to unnecessary gas consumption and thus energy expenditure for gas production, but also to turbulence in the gas streams that meet the strip material.
- the unnecessary gas consumption also plays an economic role for cost reasons. This is all the more true since coating devices for strip material can rarely be used over the full working width, but the strip to be coated, such as strip plate, often fluctuate in width.
- Such a coating device is known for example from US-A 3,941,086 and from FR-A 2 208 003 by the same applicant.
- the outlet width of the nozzle slot can be adapted to the width of the material passing through, namely, that two screens are provided, which are arranged on each side of the nozzle slot so that it can move along the nozzle slot.
- the screens are profiled so that they are adapted to the upper edge and to the lower edge of the nozzle slot, which form the guide for the screens.
- a disadvantage of this type of orifice plate is that the position within the nozzle slot can be determined directly only with difficulty. If the diaphragm drive is not automatically monitored, it cannot be quickly adapted to the width of the sheet material passing through.
- a coating device is also known from the subsequently published EP-A 0 249 234, in which the width of the nozzle slot is variable.
- a cover element in the form of a guide band is provided which is guided by the drain nozzle, grooves being provided in the drain nozzle for the purpose of this guide.
- the coating device in the area of the nozzle slot in a special way, namely to provide it with grooves, which makes it difficult to retrofit the coating device, it is also necessary to ensure that an additional drive and control mechanism is provided the guide band is in the desired position.
- the cover elements can be designed, for example, as plates or as flexible sheets and can be kept in stock in different widths.
- the working width of the nozzle gap or of the nozzle slot is limited in a simple manner or adjusted to the desired working area by placing simple platelets at the points from which a gas is to escape, in particular in the area immediately next to the side edges of the strip material to be stripped or puts on sheets, which can also be variable in size.
- These relatively light cover elements which are loosely placed on the generally vertical or approximately vertical face of the mouthpiece of the nozzle, adhere to the nozzle mouthpiece due to the suction effect emanating from the gas blown out of the nozzle and cover the slot at the points at which no gas should escape .
- cover elements such as plates, sheets or the like are expedient. chosen so wide that the same gas can escape from the slot on both sides, because in this way the gas flowing around the ends of the cover elements causes a suction effect, which the plate, sheet or the like. holds with sufficient strength on the nozzle slot and thus covers it in the desired manner.
- the cover elements provided according to the invention drop off, but this does not play an important economic role because the cover elements can be produced inexpensively and, accordingly, can also be kept in large numbers in stock.
- the cover elements can also be captively attached to a guide.
- the cover elements to be provided according to the invention are easy to install since they can be designed extremely easily. They can also be conveniently adjusted and readjusted while the system is running.
- the plates, leaves or the like are expedient. dimensioned so that they protrude at least on the top over the mouthpiece, where they are sucked in by the pressure prevailing in the nozzle. They can thus be easily gripped or held and, accordingly, can be attached and readjusted particularly advantageously.
- the nozzle (1) has a hollow base body (2) of approximately teardrop-shaped cross section, the inner cavity (3) of which can be connected to a compressed gas source (not shown), so that gas under pressure flows into the cavity (3) and is evenly distributed therein .
- the base body (2) is equipped with a narrowed mouthpiece (4), the flat end face (5) of which contains a slot (6) extending over the entire length of the nozzle (1), from which the slot (3) of the base body (2) located, pressurized gas can flow out in the form of a narrow curtain-like jet.
- the width of the slot (6) is selected so that more pressurized gas can flow into the cavity (3) than can flow out of the slot (6), the gas located in the cavity (3) will extend over the entire length of the slot (6 ) blown out with uniform thickness and with the desired nozzle effect.
- small cover plates (7) are placed on the end face (5) of the mouthpiece (4), which, according to FIG. 1, have the upper edge (7a) over the end face (5 ) protrude from the mouthpiece (4) so that they can be comfortably gripped and positioned and / or moved or removed by hand.
- FIG. 2 shows that the plates (7) are held by the gas flowing out of the slot (6) on the end face (5) of the mouthpiece (4).
- the arrows (8) drawn in FIG. 2 symbolize the gas flow. It can be seen that the gas flow in the edge region of a placed plate (7) loses its normally straight direction and is deflected more or less strongly when flowing around the side edges (7b) of the plate (7), and forms vortices (8a) which form the plate (7) on the face (5) of the mouthpiece (4).
- platelets (7) in the edge region of the working width of the nozzle (1) are expedient if no blowing action is desired there. In this way the gas consumption can be reduced, just as undesired blowing effects can be avoided where the nozzle is not supposed to work.
- the platelets (7) are each fastened to a slide (10) which is mounted on a rod (11) running parallel to the nozzle (1) in the longitudinal direction of the rod and thus along the nozzle slot (6 ) are movable.
- connection between the plate (7) and the respective carriage (10) is, for example, by a wire (12) or another connecting element, if necessary. also a thread or the like. produced.
- the plates (7) can be adjusted particularly well because you do not have to reach close to the nozzle slot (6) by hand. In addition, the plates (7) do not fall off even when the nozzle is at a standstill and are therefore immediately available again when the operation starts again.
- two nozzles (1a and 1b) lying opposite one another are provided, the slots (6) of which lie opposite one another at a short distance.
- Bow-like plates (13) are provided which hang on a carriage (14) which can be moved on parallel rods (15 and 16).
- a bracket (17) is used to connect the plate (13) and the carriage (14).
- the saddle-like plate (13) has two legs (13a and 13b) which lie against the opposing nozzle slots (6) of the nozzles (1a and 1b) when they are working.
- the plates (7 and 13) are attached to a holder in the embodiments according to FIGS. 3 and 4, they are in the same way on the end face (5) of the mouthpiece (4 ) held the nozzles, as explained above in connection with FIGS. 1 and 2.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating Apparatus (AREA)
- Coating With Molten Metal (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Claims (5)
- Dispositif d'enduction, comportant une buse pour faire disparaître par soufflage le produit d'enduction fluide ou similaire en excédent de surfaces déplacées en continu, par exemple d'une bande de tôle galvanisée, la buse comportant un corps de base creux qui s'étend sur toute la largeur du dispositif d'enduction et dans lequel peut se répartir le gaz sous pression à souffler, et une partie d'embouchure allongée qui s'étend sur toute la longueur du corps de base et qui contient, dans une face frontale plane, une fente de buse par laquelle est soufflé le gaz,
caractérisé en ce qu'afin de limiter la largeur de sortie de la fente de buse (6), des éléments de recouvrement (7) peuvent être posés librement, par le côté frontal, sur la face frontale de la partie d'embouchure (4). - Dispositif selon la revendication 1, caractérisé en ce que les éléments de recouvrement (7) sont réalisés en forme de plaquettes.
- Dispositif selon la revendication 1, caractérisé en ce que les éléments de recouvrement (7) sont réalisés en forme de feuilles flexibles.
- Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les éléments de recouvrement (7; 13) sont accrochés à un guide (11; 15, 16) s'étendent parallèlement à la buse (1).
- Dispositif selon la revendication 4, caractérisé en ce que les éléments de recouvrement (13) sont réalisés doubles, pour deux buses en vis-à-vis (1a et 1b).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88101512T ATE78878T1 (de) | 1987-02-11 | 1988-02-03 | Duese zum abblasen kontinuierlich bewegter oberflaechen. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3704199 | 1987-02-11 | ||
DE19873704199 DE3704199A1 (de) | 1987-02-11 | 1987-02-11 | Duese zum abblasen kontinuierlich bewegter oberflaechen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0278373A2 EP0278373A2 (fr) | 1988-08-17 |
EP0278373A3 EP0278373A3 (en) | 1989-03-15 |
EP0278373B1 true EP0278373B1 (fr) | 1992-07-29 |
Family
ID=6320737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88101512A Expired - Lifetime EP0278373B1 (fr) | 1987-02-11 | 1988-02-03 | Lance pour balayer de façon continue des surfaces en mouvement |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0278373B1 (fr) |
AT (1) | ATE78878T1 (fr) |
DE (2) | DE3704199A1 (fr) |
ES (1) | ES2033945T3 (fr) |
GR (1) | GR3005694T3 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT393237B (de) * | 1989-04-11 | 1991-09-10 | Lisec Peter | Duese fuer das trocknen von glastafeln |
DE19707157B4 (de) * | 1997-02-22 | 2006-04-06 | Weitmann & Konrad Gmbh & Co Kg | Vorrichtung zum Bestäuben von bewegten flächigen Produkten |
DE10245074A1 (de) * | 2002-09-27 | 2004-04-01 | Voith Paper Patent Gmbh | Rakeleinrichtung |
EP2140944A1 (fr) * | 2008-07-03 | 2010-01-06 | Linde AG | Déflecteurs réglables pour essuyage au gaz |
CN102527588A (zh) * | 2010-12-31 | 2012-07-04 | 深圳市海太阳实业有限公司 | 一种极片涂布边缘宽度调节夹具 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3314163A (en) * | 1964-02-21 | 1967-04-18 | Kohler Coating Machinery Corp | Nozzle construction for coating machines and the like |
US3687103A (en) * | 1971-01-28 | 1972-08-29 | Youngstown Sheet And Tube Co | Controlled-width fluid doctor |
IT1005507B (it) * | 1972-11-27 | 1976-09-30 | Italsider Spa | Dispositivo perfezionato per la regolazione continua del rivestimen to di zinco di un lamierino d accia io e simili |
US3941086A (en) * | 1973-08-08 | 1976-03-02 | Italsider S.P.A. | Fluid doctor blade |
US4392613A (en) * | 1980-12-22 | 1983-07-12 | Armco Inc. | Discharge gap cleaning device |
GB2096490B (en) * | 1981-04-13 | 1984-12-05 | Davey Loewy Ltd | Spraying apparatus |
ES2009820T5 (es) * | 1986-06-12 | 1995-08-16 | Duma Konstruktionsburo | Dispositivo de evacuacion para la cubricion continua bilateral de una banda de metal. |
-
1987
- 1987-02-11 DE DE19873704199 patent/DE3704199A1/de active Granted
-
1988
- 1988-02-03 EP EP88101512A patent/EP0278373B1/fr not_active Expired - Lifetime
- 1988-02-03 ES ES198888101512T patent/ES2033945T3/es not_active Expired - Lifetime
- 1988-02-03 AT AT88101512T patent/ATE78878T1/de active
- 1988-02-03 DE DE8888101512T patent/DE3873108D1/de not_active Expired - Lifetime
-
1992
- 1992-09-14 GR GR920402026T patent/GR3005694T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
GR3005694T3 (fr) | 1993-06-07 |
DE3704199A1 (de) | 1988-08-25 |
ATE78878T1 (de) | 1992-08-15 |
DE3873108D1 (de) | 1992-09-03 |
DE3704199C2 (fr) | 1990-09-27 |
EP0278373A2 (fr) | 1988-08-17 |
ES2033945T3 (es) | 1993-04-01 |
EP0278373A3 (en) | 1989-03-15 |
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