EP0369478B1 - Kammer für die verschiedenen Behandlungsstationen eines Gegenstandes beim elektrostatischen Pulverbeschichten - Google Patents
Kammer für die verschiedenen Behandlungsstationen eines Gegenstandes beim elektrostatischen Pulverbeschichten Download PDFInfo
- Publication number
- EP0369478B1 EP0369478B1 EP89121341A EP89121341A EP0369478B1 EP 0369478 B1 EP0369478 B1 EP 0369478B1 EP 89121341 A EP89121341 A EP 89121341A EP 89121341 A EP89121341 A EP 89121341A EP 0369478 B1 EP0369478 B1 EP 0369478B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- booth
- chamber
- treatment
- treatment unit
- area
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/40—Construction elements specially adapted therefor, e.g. floors, walls or ceilings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/90—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
Definitions
- the invention relates to a chamber for the various treatment stations of an object in the electrostatic powder coating of objects with side walls, a ceiling area and a floor area, the side walls being adjustable in the transverse direction of the cabin.
- the object In order to be able to coat an object with powder coating, it has to go through various treatment stations. First, the object must be degreased, cleaned, phosphated and rinsed, whereupon it is dried in a further treatment station before it can be introduced into a treatment station in which, with the aid of an electrostatic field, powder coating can be applied by means of spray nozzles, the excess powder being suctioned off and is reused. The object then arrives at a further treatment station, in which the uniformly adhering powder coating is gelled, cured and dried by means of infrared radiators.
- tunnel-shaped chambers into which the object is inserted and removed after the treatment, for which the chamber has frontal openings.
- a disadvantage of these known chambers is the fact that they are rigid in themselves, so that they are only suitable for objects up to a certain size.
- a cabin for spray coating objects is known in which the side walls can be adjusted transversely to the longitudinal axis of the cabin in order to be able to adapt the cabin volume to the size of the objects to be coated.
- the ceiling area provided that rigid ceiling walls are provided, and the floor area, which consists of a circumferential filter belt, remains unchanged.
- the spray device can be moved along with the side wall, but cannot be moved in the longitudinal direction of the chamber, so that the objects to be coated have to be guided past the spray device. In the case of long objects, this means that either very long chambers have to be formed or, in practice, the more common case is that the objects already leave the chamber before they are coated over their entire length.
- the object of the invention is to provide a chamber which can be adapted to different dimensions of the objects with changing space requirements and the objects introduced therein can be completely treated without leaving the chamber even partially.
- a chamber according to the preamble of claim 1 in that the chamber is divided in its entirety in the longitudinal direction in two parts, each part of which comprises a longitudinal wall and part of the ceiling area and part of the floor area, which form a part with the longitudinal wall and can be displaced relative to one another transversely to the longitudinal direction of the chamber, and that a treatment unit is guided to be movable in the longitudinal direction of the chamber at least along a side wall.
- the chamber is divided in its entirety in the longitudinal direction, and thus both chamber parts can be displaced relative to one another without the ceiling areas and floor areas remaining outside the chamber interior when the longitudinal walls are moved together, there is no risk of contamination of such outside chamber areas. If such chamber areas remain outside the chamber interior for a long time, they must be cleaned again before the chamber is enlarged, which is not necessary in the present invention due to the division of the chamber into two.
- the respective treatment unit can be moved within the working area of the chamber, very long objects, up to a length corresponding to the length of the working area, can be completely treated before they leave the chamber. This is For example, for the treatment station in which the object is cleaned, degreased, phosphated and rinsed off again, this is important since the degree of carryover of adhering liquid can be significantly reduced compared to a continuous treatment, but it is also more favorable in the other treatment stations if the object is only then it leaves the chamber when it is coated over its entire length or when the powder coating has hardened.
- the basic design of the chamber namely the divided design and thus the adaptability to objects of different sizes and the arrangement of the treatment unit as a mobile unit, are the same regardless of the use of the chamber at the individual stations. Only the individual treatment units that are adapted to the respective treatment process are different.
- the movable treatment unit on a movable carriage has at least one spray nozzle, which can optionally be connected to a source for cleaning or treatment liquid and a source for rinsing liquid, and a collecting channel is tiltably mounted on the bottom of the chamber, which the Depending on the tilted position, the liquid collected either flows into a container for treatment liquid or a container for rinsing liquid.
- the objects to be coated are cleaned, degreased, phosphated and then rinsed off, so that they are then dried in the next treatment station can.
- the movable treatment unit comprises at least one unit equipped with infrared radiators and reflectors, which extends approximately over the entire inner circumference along a chamber section.
- the object to be treated is subjected to heat treatment from all sides.
- a chamber designed in this way is also used for curing the powder coating applied to the object.
- air blowing nozzles are provided on the movable unit in addition to the infrared radiators in order to accelerate the drying process.
- the movable treatment unit comprises at least one spray nozzle for the powder and one suction device opposite the spray nozzle for coating the pretreated article.
- the chamber has an opening in its upper region, which is used for inserting and removing the object to be treated and this opening has a length that corresponds at least to the length of the object to be treated, this can be particularly useful long objects are brought into the respective chamber from above and removed again.
- This configuration enables the chambers to be set up with their longitudinal direction transverse to the transport direction of the objects, as a result of which a significantly smaller space requirement is required compared to an arrangement of the individual chambers in their longitudinal direction behind one another. This arrangement then leads to a cyclical conveying of the objects from one chamber to another. This arrangement is particularly suitable for very long objects.
- the chamber can have inlet and outlet openings for the objects to be treated at the front ends in order to lead them through the chamber in the longitudinal direction.
- a tunnel-shaped chamber generally designated 1
- the respective chamber has an essentially rectangular cross section with rounded transitions 5 and 6 between the side walls 7 and the ceiling area 8 on the one hand and between the side walls 7 and the floor area 9 on the other hand.
- an opening 10 which extends in the longitudinal direction and which serves for the insertion and removal of elongated objects, for example pipes 11.
- the displaceable part 3 of the chamber 1 has in its bottom region 9 a pivotably mounted cover plate 12, which rests on the bottom of the fixed chamber part 2 and moves when the Chamber part 3 can adapt to the sloping floor of the fixed chamber part.
- This basic chamber structure is the same for all chambers, regardless of which treatment station they are assigned to.
- the chamber is divided into a treatment area 13 and a preparation area 14 provided at the end of the chamber, in which the individual treatment units to be described in more detail can be moved if the chamber is to be cleaned, for example.
- a transport system for the objects to be treated is provided, the transport direction being transverse to the longitudinal direction of the chamber.
- the individual chambers are set up parallel to one another and the articles to be treated are transported in cycles from one chamber to the other, the articles being lowered into the chamber from above through the opening 11 and removed again after the treatment.
- the objects can also be transported in the longitudinal direction through the chambers, since the ends of the chambers are open. This is useful for small opponents.
- the different treatment units within the chambers that are necessary to pretreat, dry and coat the article and then harden the applied layer are described below.
- each treatment unit for each inside the chamber 1 on each side wall
- Each treatment unit can be moved on rails 17 in the longitudinal direction of the chamber and has pipelines 18 and spray nozzles 19. From these spray nozzles, treatment liquid is optionally sprayed for cleaning, degreasing and phosphating the objects or rinsing liquid in order to rinse off the object after the treatment.
- a tiltable channel 20 which, depending on its tilting position, firstly directs the treatment liquid into a collecting container and, in the other tilting position, the washing liquid into another collecting container, which are not shown in the drawing. So that the liquid can reach the tipping channel 20 despite the bottom plate 12, the bottom plate 12 rests on ramps 21 which are arranged on the bottom of the fixed part, so that a certain gap remains between the bottom of the fixed part and the bottom plate.
- the chamber 1 is designed as a drying station.
- a treatment unit can be moved along rails along the side wall of the chamber, which has infrared radiators 22 and air-blowing nozzles 23 in order to dry the object coming from the chamber according to FIG. 1.
- Fig. 3 shows the chamber as a coating station.
- a unit is arranged on each side wall along the rails 17, the spray nozzles 26 and one Has suction device 25.
- spray nozzles and suction device are arranged in mirror image, so that the suction nozzles each have a suction device directly opposite.
- This chamber is also in the transition area 5, ie in the transition between the side wall and the ceiling area with a spray device 28, which consists of a water pipe and spray nozzles, which are used to rinse off the entire inner wall surfaces, which is necessary for each color change to the rinse off powder particles adhering to the wall, which get to the wall despite the suction device.
- the chamber serves as a curing station for the applied lacquer layer.
- movable treatment units 29 are arranged on both side walls, which have infrared radiators 30 in order to cause the applied powder layer to gel by the action of heat and to activate the hardener contained in the powder.
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3838926 | 1988-11-17 | ||
DE3838926A DE3838926A1 (de) | 1988-11-17 | 1988-11-17 | Kammer fuer die verschiedenen behandlungsstationen eines gegenstandes beim elektrostatischen pulverbeschichten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0369478A1 EP0369478A1 (de) | 1990-05-23 |
EP0369478B1 true EP0369478B1 (de) | 1993-08-11 |
Family
ID=6367365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89121341A Expired - Lifetime EP0369478B1 (de) | 1988-11-17 | 1989-11-17 | Kammer für die verschiedenen Behandlungsstationen eines Gegenstandes beim elektrostatischen Pulverbeschichten |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0369478B1 (da) |
DE (1) | DE3838926A1 (da) |
DK (1) | DK575089A (da) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3940085A1 (de) * | 1989-12-04 | 1991-06-06 | Columbus System Patent Ag | Vorrichtung fuer das elektrostatische pulverbeschichten von gegenstaenden |
SE464222B (sv) * | 1990-03-19 | 1991-03-25 | Erik Von Gertten Ab | Foer sprutmaalning avsedd sprutkammare |
FR2687082A1 (fr) * | 1992-02-11 | 1993-08-13 | Sitonet Sa | Tunnel de traitement de surface et son procede de realisation. |
IT1257689B (it) * | 1992-11-20 | 1996-02-01 | Impianto di verniciatura a polveri con cabina a sezione variabile | |
DE19523319A1 (de) * | 1995-06-27 | 1997-01-09 | Tegometall Int Ag | Vorrichtung zur Sprühbeschichtung von Werkstücken mit Farbe |
GB9606431D0 (en) * | 1996-03-27 | 1996-06-05 | Paint & Powder Sys Ltd | Spray booths |
FR2849397B1 (fr) * | 2002-12-31 | 2005-08-05 | Laplace Ets | Dispositif pour le traitement de surface par projection d'un fluide |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH611184A5 (da) * | 1975-09-29 | 1979-05-31 | Gema Ag | |
GB2091858B (en) * | 1980-12-11 | 1984-09-26 | Infraroedteknik Ab | Surface treatment of objects |
DE8314662U1 (de) * | 1983-05-18 | 1986-05-28 | Becker, Martin, 3108 Winsen | Einrichtung zum Beschichten von Gegenständen |
CH668008A5 (de) * | 1985-04-30 | 1988-11-30 | H U Ramseier Fa | Elektrostatische pulverbeschichtungsanlage. |
DE3640699A1 (de) * | 1986-11-28 | 1988-06-09 | Gema Ransburg Ag | Kabine zum spruehbeschichten von objekten |
-
1988
- 1988-11-17 DE DE3838926A patent/DE3838926A1/de not_active Withdrawn
-
1989
- 1989-11-16 DK DK575089A patent/DK575089A/da not_active Application Discontinuation
- 1989-11-17 EP EP89121341A patent/EP0369478B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3838926A1 (de) | 1990-05-23 |
EP0369478A1 (de) | 1990-05-23 |
DK575089A (da) | 1990-05-18 |
DK575089D0 (da) | 1989-11-16 |
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