EP0505694B1 - Pretreatment installation for the pretreatment by spraying of objects to be coated in a subsequent coating installation - Google Patents
Pretreatment installation for the pretreatment by spraying of objects to be coated in a subsequent coating installation Download PDFInfo
- Publication number
- EP0505694B1 EP0505694B1 EP92101672A EP92101672A EP0505694B1 EP 0505694 B1 EP0505694 B1 EP 0505694B1 EP 92101672 A EP92101672 A EP 92101672A EP 92101672 A EP92101672 A EP 92101672A EP 0505694 B1 EP0505694 B1 EP 0505694B1
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- European Patent Office
- Prior art keywords
- take
- shaft
- pretreatment
- separating
- installation according
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-
- 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
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- 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
- B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
Definitions
- the invention relates to a pretreatment system for spray pretreatment according to the preamble of claim 1.
- Such pretreatment systems as e.g. are known from US-A-3 459 201, e.g. addition, components such as cladding elements, window frames or the like. free of grease and dirt in order to be able to coat these components, e.g. by powder coating, painting or anodizing.
- This pretreatment can include degreasing with a weakly alkaline medium in a first device, subsequent rinsing with water, neutralization with weak sulfuric acid, a further rinse cycle, the Chromating with weak chromic acid, rinsing with demineralized water and rinsing include, ie a total of seven operations, the respective medium being sprayed on and collected in a tub.
- the collected media can be reused, as long as it is not rinsing water. Accordingly, care must of course be taken to ensure that the media from different work processes do not mix.
- the individual pretreatment devices ie the spray nozzles and the associated drip pan, are conventionally arranged at large distances from one another. This means that such pretreatment systems take up considerable space in addition to the space required for the actual coating system and make large transport routes necessary.
- the object of the invention is to design a pretreatment system of the type mentioned at the outset in such a way that a compact, space-saving design is achieved with unchanged effectiveness, and that it is ensured that the individual spray media are separated from one another with absolute certainty, with nevertheless unimpeded transport should be possible by means of the transport device.
- the take-up shaft laterally protrudes laterally beyond the transport device and at the end there are toothed or friction wheels which wrap around a friction belt or chain belt or a toothed belt such that the one belt or belt end is stationary above it the transport device is mounted, while the other end of the belt or belt is shortened or lengthened by a drive, which can be arranged in the area of the building ceiling, wound up or unwound.
- An alternative constructive embodiment provides that at least one drive sits on each take-up shaft, which drive is connected to a take-up roll, around which a holding strap fastened above the transport device or retaining belt can be wound up in such a way that the winding shaft rotates and is lowered or raised during winding and at the same time the separating element is rolled up or unrolled.
- springs to the take-up shaft, similar to a fixed roller blind, which are wound when the take-up shaft is rotated when it is pulled up due to the unwinding process due to the fastening of the lower edge, and which then ensure that these when the take-up shaft is lowered rotated under the action of the springs and the separating element is wound up.
- the spray nozzles are arranged so that they can be moved up and down along the holding devices.
- the spray nozzles can be attached, for example, to a line encompassing the holding devices in a U-shape, a flexible hose line supplying the dimensionally stable U-shaped line with the spray medium and compensating for the up and down movement.
- a pretreatment system shown in the drawing comprises a plurality of collecting trays 1, only four trays 1a to 1d being shown in the drawing for the sake of simplicity, although for most practical applications several such trays, e.g. seven such tubs will be provided.
- a first pan for degreasing by means of a weakly alkaline solution e.g. a second pan for rinsing with water, a third pan for pickling (neutralizing) for weak, e.g. 10% sulfuric acid, a fourth tub for rinsing, a fifth tub for chromating with weak chromic acid, a sixth tub for rinsing with deionized water and a seventh tub for rinsing.
- weak e.g. 10% sulfuric acid
- a fourth tub for rinsing e.g. 10% sulfuric acid
- a fifth tub for chromating with weak chromic acid e.g. 10% sulfuric acid
- a sixth tub for rinsing with deionized water e.g. a sixth tub for rinsing with deionized water
- a seventh tub for rinsing e.g. a seventh tub for rinsing.
- a transport device 3 which comprises rails 4, on which motor-driven carriers 5 run, on which likewise only schematically indicated holding devices 6 for those attached thereto treating objects 7 are attached.
- the transport device 3 transports the holding devices 6 in the direction of the arrow 8 in FIG. 1 in cycles in such a way that the holding devices 6 each remain above a tub 1 for the duration of a spray treatment to be described below, in order then to be transported on again in a further transport step, for example from tub 1a to tub 1b.
- each tub 1 there are spray nozzles 9 which are formed on a rectangular, annularly closed line 10, each line 10 having a central inflow 11 which is only schematically indicated in FIG.
- the ring lines 1o are provided in the vertical direction (arrow 14 in FIG. 1) via bearings 12 provided outside the respective trough 1 on holding devices 13 by means of drives (motor 23 ') not shown in the drawing, so that those to be treated Objects 7 seen in the vertical direction are sprayed from all sides and in this way spray shadows are avoided.
- the lines 10 are lowered so that the holding devices 6 for the objects 7 to be treated can pass freely therewith.
- Separating elements 15 in the form of curtains or blinds which are resistant to weak alkalis and acids are provided between the individual collecting trays 1.
- Wind-up shafts 18 are connected to the opposite end region 19 of the separating elements 15 and in turn are mounted in the area of the ceiling 2 via cable pulls 20.
- the ends of the winding shafts 18 are each rotatably mounted on a horizontal support 21, the two horizontal supports 21 being guided on both sides of the holding device 13 and being able to be raised and lowered by means of a cable 22 and an associated motor 23.
- a spiral spring is provided, which is pulled up like a spring roller blind when the carrier 21 and thus the winding shafts 18 are pulled upwards, so that these springs, not shown in the drawing, on the other hand when Lowering the carrier 21 and the take-up shafts 18 drive the take-up shafts 18 in the direction of arrow 24, so that when the take-up shafts 18 are lowered into the region immediately above the tubs 1, the separating elements 15 are wound up under the influence of the rotary action of these springs.
- the above-described system according to the invention thus works so that in the starting position the winding shafts 18 and the lines 10 are lowered to the area below the lower end 25 of the holding devices 6. Accordingly, the holding devices 6 with the objects 7 to be treated can be moved into the area of the Troughs 1 or are moved in cycles from a trough 1a to a trough 1b or 1c or 1d. After the transport device 3 has come to a standstill after such a cyclical transport movement, the winding shafts 18 with the carrier 21 are first moved upward, so that the separating elements 15 between their lower edge 16 and the one moved upwards, in FIG. 1 in their upper end position shown winding shaft 18 excited will. In spite of the spatial proximity of two adjacent collecting trays 1, the space above the same is hermetically separated from the adjacent tray.
- the lines 10 with the spray nozzles 9 can now be moved down and up in the direction of the arrow 14, so that the objects 7 are sprayed from different angles and thus very uniformly.
- the winding shafts 18 are also lowered again, the coil springs tensioned during the previous lifting now setting the winding shafts 18 into rotation, so that after complete lowering of the winding shafts 18, the separating elements 15 are located on the winding shafts 18 in the area below the lower end 25 of the holding devices 6.
- the transport device 3 can now initiate a further, cyclical transport step.
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- Spray Control Apparatus (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Cultivation Of Plants (AREA)
Abstract
Description
Die Erfindung richtet sich auf eine Vorbehandlungsanlage zur Sprüh-Vorbehandlung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a pretreatment system for spray pretreatment according to the preamble of claim 1.
Derartige Vorbehandlungsanlagen, wie sie z.B. aus der US-A-3 459 201 bekannt sind, dienen z.B. dazu, Bauteile, wie Verkleidungselemente, Fensterrahmen od.dgl. von Fett und Schmutz zu befreien, um diese Bauteile anschließend beschichten zu können, z.B. durch Pulverbeschichtung, Lackierung oder Eloxieren.Such pretreatment systems, as e.g. are known from US-A-3 459 201, e.g. addition, components such as cladding elements, window frames or the like. free of grease and dirt in order to be able to coat these components, e.g. by powder coating, painting or anodizing.
Diese Vorbehandlung kann z.B. das Entfetten mit einem schwach alkalischen Medium in einer ersten Einrichtung, das anschließende Spülen mit Wasser, das Neutralisieren mit schwacher Schwefelsäure, einen weiteren Spülgang, das Chromatieren mit schwacher Chromsäure, das Spülen mit vollentsalztem Wasser und das Reinspülen umfassen, d.h. also insgesamt sieben Arbeitsgänge, wobei das jeweilige Medium aufgesprüht und in einer Wanne aufgefangen wird. Die aufgefangenen Medien können, soweit es sich nicht um Spülwasser handelt, wieder verwendet werden. Dementsprechend muß natürlich dafür Sorge getragen werden, daß sich nicht die Medien unterschiedlicher Arbeitsgänge vermischen. Um dies zu erreichen, werden herkömmlicherweise die einzelnen Vorbehandlungseinrichtungen, d.h. die Sprühdüsen und die zugeordnete Auffangwanne in großen Abständen voneinander angeordnet. Dies führt dazu, daß derartige Vorbehandlungsanlagen zusätzlich zu dem Platzbedarf für die eigentliche Beschichtungsanlage erheblichen Raum beanspruchen und große Transportwege erforderlich machen.This pretreatment can include degreasing with a weakly alkaline medium in a first device, subsequent rinsing with water, neutralization with weak sulfuric acid, a further rinse cycle, the Chromating with weak chromic acid, rinsing with demineralized water and rinsing include, ie a total of seven operations, the respective medium being sprayed on and collected in a tub. The collected media can be reused, as long as it is not rinsing water. Accordingly, care must of course be taken to ensure that the media from different work processes do not mix. In order to achieve this, the individual pretreatment devices, ie the spray nozzles and the associated drip pan, are conventionally arranged at large distances from one another. This means that such pretreatment systems take up considerable space in addition to the space required for the actual coating system and make large transport routes necessary.
Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, eine Vorbehandlungsanlage der eingangs genannten Art so auszugestalten, daS bei unveränderter Wirksamkeit eine kompakte, platzsparende Bauweise erreicht wird, und daß sichergestellt ist, daß die einzelnen Sprühmedien absolut sicher voneinander getrennt werden, wobei gleichwohl ein ungehinderter Transport mittels der Transporteinrichtung möglich sein soll.Proceeding from this, the object of the invention is to design a pretreatment system of the type mentioned at the outset in such a way that a compact, space-saving design is achieved with unchanged effectiveness, and that it is ensured that the individual spray media are separated from one another with absolute certainty, with nevertheless unimpeded transport should be possible by means of the transport device.
Diese Aufgabe wird erfindungsgemäß gelöst gemäß dem kennzeichnenden Teil des Anspruchs 1.This object is achieved according to the characterizing part of claim 1.
Dies bedeutet, daß die Heb- und Senkbewegung der Aufwickelwelle koordiniert mit der Auf- und Abwickelbewegung erfolgt, so daß im abgesenkten Zustand das Trennelement aufgewickelt ist und dementsprechend die oberhalb der Auffangwannen z.B. an der Gebäudedecke befestigte Transporteinrichtung die Halteeinrichtungen mit den zu behandelnden Teilen taktweise vorwärts transportieren kann, ohne daß die Trennelemente den Transport behindern würden. Beim Hochfahren der Aufwickelwellen wird das Trennelement abgewickelt und sorgt nun beim Ruhen der Transporteinrichtung für eine sichere Trennung.This means that the lifting and lowering movement of the winding shaft takes place in a coordinated manner with the winding and unwinding movement, so that the separating element is wound up in the lowered state and accordingly the above the collecting troughs e.g. transport device fastened to the ceiling of the building can transport the holding devices with the parts to be treated forward in cycles without the separating elements hindering the transport. When the winding shafts are raised, the separating element is unwound and now ensures safe separation when the transport device is at rest.
Bei einer denkbaren konstruktiven Ausgestaltung ist vorgesehen, daß die Aufwickelwelle in Querrichtung seitlich über die Transporteinrichtung hinausragt und an dieser endseitig Zahn- oder Reibräder angeordnet sind, die ein Reibband oder Kettenband oder einen Zahnriemen derart umschlingt, daß das eine Band- bzw. Riemenende ortsfest oberhalb der Transporteinrichtung gelagert ist, während das andere Band- oder Riemenende unter Verkürzung bzw. Verlängerung von einem Antrieb, der im Bereich der Gebäudedecke angeordnet sein kann, auf- bzw. abgewickelt wird.In a conceivable design, it is provided that the take-up shaft laterally protrudes laterally beyond the transport device and at the end there are toothed or friction wheels which wrap around a friction belt or chain belt or a toothed belt such that the one belt or belt end is stationary above it the transport device is mounted, while the other end of the belt or belt is shortened or lengthened by a drive, which can be arranged in the area of the building ceiling, wound up or unwound.
Eine alternative konstruktive Ausführungsform sieht vor, daß auf jeder Aufwickelwelle wenigstens ein Antrieb sitzt, der mit einer Aufwickelrolle verbunden ist, um die ein oberhalb der Transporteinrichtung befestigter Halteriemen oder Haltegurt derart aufwickelbar ist, daß sich beim Aufwickeln die Wickelwelle dreht und absenkt bzw. angehoben wird und gleichzeitig das Trennelement auf- bzw. abgerollt wird.An alternative constructive embodiment provides that at least one drive sits on each take-up shaft, which drive is connected to a take-up roll, around which a holding strap fastened above the transport device or retaining belt can be wound up in such a way that the winding shaft rotates and is lowered or raised during winding and at the same time the separating element is rolled up or unrolled.
Bei dieser Lösung zieht sich also die Aufwickelwelle aufgrund des dort angeordneten Antriebes praktisch selbst nach oben in die trennende Position.With this solution, the winding shaft practically pulls itself upwards into the separating position due to the drive arranged there.
Grundsätzlich würde es vorteilhaft sein, die Unterkante des Trennelements mit dem Bereich zwischen den Längskanten zweier Auffangwannen fest zu verbinden, um eine Desorientierung der Unterkante zu verhindern. Hierdurch kann auch mit verhältnismäßig dünnen Trennelementen gearbeitet werden.In principle, it would be advantageous to firmly connect the lower edge of the separating element to the area between the longitudinal edges of two collecting trays in order to prevent the lower edge from being disoriented. As a result, it is also possible to work with relatively thin separating elements.
In diesem Zusammenhang ist es auch möglich, an der Aufwickelwelle ähnlich wie bei einem Festerrollo Federn anzubringen, die beim Drehen der Aufwickelwelle beim Hochziehen derselben bedingt durch den Abrollvorgang aufgrund der Befestigung der Unterkante aufgezogen werden und die dann beim Absenken der Aufwickelwelle dafür sorgen, daß diese unter der Einwirkung der Federn in Drehung versetzt und das Trennelement aufgewickelt wird.In this context, it is also possible to attach springs to the take-up shaft, similar to a fixed roller blind, which are wound when the take-up shaft is rotated when it is pulled up due to the unwinding process due to the fastening of the lower edge, and which then ensure that these when the take-up shaft is lowered rotated under the action of the springs and the separating element is wound up.
Um zu vermeiden, daS bei der Sprühbehandlung an den zu behandelnden Gegenständen Sprühschatten entstehen, ist mit besonderem Vorteil weiterhin vorgesehen, daß die Sprühdüsen längs der Halteeinrichtungen auf- und abfahrbar angeordnet sind. Die Sprühdüsen können beispielsweise an einer die Halteeinrichtungen U-förmig umgreifenden Leitung angebracht sein, wobei eine flexible Schlauchleitung die formfeste U-förmige Leitung mit dem Sprühmedium versorgt und die Auf- und Abbewegung ausgleicht.In order to avoid spray shadows being formed on the objects to be treated during the spray treatment, it is particularly advantageously provided that the spray nozzles are arranged so that they can be moved up and down along the holding devices. The spray nozzles can be attached, for example, to a line encompassing the holding devices in a U-shape, a flexible hose line supplying the dimensionally stable U-shaped line with the spray medium and compensating for the up and down movement.
Nachfolgend wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels in Verbindung mit der Zeichnung näher beschrieben. Dabei zeigen
- Fig. 1
- eine schematische Seitenansicht bzw. Schnittdarstellung und
- Fig. 2
- eine Aufsicht einer erfindungsgemäßen Vorbehandlungsanlage.
- Fig. 1
- a schematic side view or sectional view and
- Fig. 2
- a supervision of a pretreatment plant according to the invention.
Eine in der Zeichnung dargestellte Vorbehandlungsanlage umfaßt eine Mehrzahl von Auffangwannen 1, wobei in der Zeichnung der Einfachheit halber nur vier Wannen 1a bis 1d dargestellt sind, obwohl für die meisten praktischen Anwendungen mehrere derartiger Wannen, z.B. sieben solche Wannen vorgesehen sein werden.A pretreatment system shown in the drawing comprises a plurality of collecting trays 1, only four
In der Praxis kann z.B. eine erste Wanne zum Beizentfetten mittels einer schwach alkalischen Lösung, eine zweite Wanne zum Spülen mit Wasser, eine dritte Wanne zum Dekapieren (Neutralisieren) für schwache, z.B. 1o%ige Schwefelsäure, eine vierte Wanne zum Spülen, eine fünfte Wanne zum Chromatieren mit schwacher Chromsäure, eine sechste Wanne zum Spülen mit vollentsalztem Wasser und eine siebte Wanne zum Reinspülen vorgesehen sein.In practice, e.g. a first pan for degreasing by means of a weakly alkaline solution, a second pan for rinsing with water, a third pan for pickling (neutralizing) for weak, e.g. 10% sulfuric acid, a fourth tub for rinsing, a fifth tub for chromating with weak chromic acid, a sixth tub for rinsing with deionized water and a seventh tub for rinsing.
Im Bereich der Decke 2 des Gebäudes, in dem die erfindungsgemäße Anlage untergebracht ist, ist eine Transporteinrichtung 3 vorgesehen, welche Schienen 4 umfaßt, auf welchen motorisch taktweise angetrieben Träger 5 laufen, an welchen ebenfalls nur schematisch angedeutete Halteeinrichtungen 6 für die daran hängenden, zu behandelnden Gegenstände 7 angebracht sind.In the area of the
Die Transporteinrichtung 3 transportiert die Halteeinrichtungen 6 in Richtung des Pfeils 8 in Fig. 1 taktweise derart, daß die Halteeinrichtungen 6 jeweils über einer Wanne 1 für die Dauer einer nachfolgend noch zu beschreibenden Sprühbehandlung verbleiben, um dann jeweils wieder einen weiteren Transportschritt, z.B. von der Wanne 1a zur Wanne 1b, weitertransportiert zu werden.The
Im Bereich jeder Wanne 1 sind Sprühdüsen 9 angeordnet, welche an einer rechteckigen, ringförmig geschlossenen Leitung 1o ausgebildet sind, wobei jede Leitung 1o einen in Fig. 2 nur schematisch angedeuteten zentralen Zufluß 11 aufweist.In the area of each tub 1 there are
Die Ring-Leitungen 1o sind über außerhalb der jeweiligen Wanne 1 vorgesehene Lager 12 an Halteeinrichtungen 13 mittels in der Zeichnung im einzelnen nicht dargestellten Antrieben (Motor 23') in vertikaler Richtung verfahrbar (Pfeil 14 in Fig. 1), so daß die zu behandelnden Gegenstände 7 in vertikaler Richtung gesehen von allen Seiten besprüht werden und auf diese Weise Sprühschatten vermieden werden.The ring lines 1o are provided in the vertical direction (
Immer dann, wenn die Transporeinrichtung 3 einen taktweisen Transport in den Bereich der Behandlungsanlage hinein bzw. von einer Wanne zur nächsten bewerkstelligt, werden die Leitungen 1o nach unten abgesenkt, so daß die Halteeinrichtungen 6 für die zu behandelnden Gegenstände 7 mit denselben frei passieren können.Whenever the
Zwischen den einzelnen Auffangwannen 1 sind Trennelemente 15 in Form von gegenüber schwachen Laugen und Säuren beständigen Vorhängen bzw. Rollos vorgesehen.Separating
Diese Trennelement sind mit ihrer Unterkante 16 mit dem Bereich 17 zwischen zwei Auffangwannen 1 bzw. mit dem Randbereich der jeweils äußersten Auffwangwannen verbunden. Aufwickelwellen 18 sind mit dem entgegengesetzten Endbereich 19 der Trennelemente 15 verbunden und ihrerseits im Bereich der Decke 2 über Seilzüge 2o gelagert. Die Enden der Wickelwellen 18 sind jeweils an einem horizontalen Träger 21 drehbar gelagert, wobei die beiden horizontalen Träger 21 an der Halteeinrichtung 13 beiderseits geführt sind und mittels eines Seilzuges 22 und eines zugeordneten Motors 23 anhebbar und absenkbar sind.These separating elements are connected with their
Im Bereich des Trägers 21 bzw. der Enden der Aufwickelwellen 18 ist eine Spiralfeder vorgesehen, welche wie bei einem Springrollo aufgezogen wird, wenn der Träger 21 und damit die Aufwickelwellen 18 nach oben gezogen werden, so daß diese in der Zeichnung nicht dargestellten Federn andererseits beim Absenken des Trägers 21 und der Aufwickelwellen 18 die Aufwickelwellen 18 in Richtung des Pfeils 24 antreiben, so daß beim Absenken der Aufwickelwellen 18 bis in den Bereich unmittelbar oberhalb der Wannen 1 die Trennelemente 15 unter dem Einfluß der Drehwirkung dieser Federn aufgewickelt werden.In the area of the
Die vorstehend beschriebene erfindungsgemäße Anlage arbeitet also so, daß in der Ausgangsposition die Aufwickelwellen 18 und die Leitungen 1o abgesenkt sind bis in den Bereich unterhalb des unteren Endes 25 der Halteeinrichtungen 6. Dementsprechend können die Halteeinrichtungen 6 mit den zu behandelnden Gegenständen 7 in den Bereich der Wannen 1 bzw. taktweise von einer Wanne 1a zu einer Wanne 1b bzw. 1c bzw. 1d verfahren werden. Nachdem die Transporteinrichtung 3 nach einer derartigen taktweisen Transportbewegung zum Stillstand gekommen ist, werden zunächst die Aufwickelwellen 18 mit dem Träger 21 nach oben gefahren, so daß die Trennelemente 15 zwischen deren Unterkante 16 und der nach oben bewegten, in Fig. 1 in ihrer oberen Endlage dargestellten Aufwickelwelle 18 gespannt werden. Damit ist trotz der räumlichen Nähe zweier benachbarter Auffangwannen 1 der Raum oberhalb derselben hermetisch von der jeweils benachbarten Wanne getrennt.The above-described system according to the invention thus works so that in the starting position the
Es können nun die Leitungen 1o mit den Sprühdüsen 9 in Richtung des Pfeils 14 nach unten und oben verfahren werden, so daß die Gegenstände 7 aus unterschiedlichen Winkeln und damit sehr gleichmäßig besprüht werden.The
Nachdem die Leitungen 1o wieder sämtlich abgesenkt sind, was nach einer oder mehreren Auf- und Abbewegungen der Fall sein kann, werden auch die Aufwickelwellen 18 wieder abgesenkt, wobei die beim vorherigen Anheben gespannten Spiralfedern nun die Aufwickelwellen 18 in Drehung setzen, so daß nach dem vollständigen Absenken der Aufwickelwellen 18 die Trennelemente 15 sich auf den Aufwickelwellen 18 im Bereich unterhalb des unteren Endes 25 der Halteeinrichtungen 6 befinden.After the lines 1o are all lowered again, which can be the case after one or more up and down movements, the
Die Transporteinrichtung 3 kann nun einen weiteren, taktweisen Transportschritt veranlassen.The
Dementsprechend ist es aufgrund der erfindungsgemäßen Lösung möglich, auf engstem Raum eine sehr intensive Behandlung vorzunehmen.Accordingly, it is possible on the basis of the solution according to the invention to carry out a very intensive treatment in a confined space.
Claims (9)
- Pretreatment installation for the pretreatment by spraying of objects (7) to be coated in a subsequent coating installation, a plurality of such objects (7) being arranged on retaining devices (6) of a conveying equipment (3) and being supplied one after the other in cycles to a plurality of devices for the pretreatment by spraying with collecting basins (1) for the treatment agent, the collecting basins (1) being arranged directly adjacent, and a separating device with separating elements (15) removable from the conveying path thus clearing the latter being arranged in the zone (17) of the edges between two collecting basins (1a and 1b and 1c and 1d, respectively), characterized in that the separating devices comprise a take-up shaft (18), which is movable upwards and downwards by the transmission of rotation to the shaft (18), the separating element (15) being wound on the take-up shaft (18) in such a direction of winding that the separating element (15) is wound up when the take-up shaft (18) is lowered driven in rotation and that the separating element (15) is unwound the take-up shaft (18) is raised driven in rotation.
- Installation according to claim 1, characterized in that for clearing the conveying path, the separating elements (15) are windable.
- Installation according to claim 2, characterized in that the separating elements (15) are formed by foils, coated tissues, blind-like lamellar structures or the like.
- Installation according to claim 3, characterized in that the separating elements (15) are formed by PVC tissue.
- Installation according to claim 1, characterized in that the take-up shaft (18) extends crosswise beyond the sides of the conveying equipment and in that toothed gears or friction gears are arranged on the latter's ends, which are looped by a friction belt or a chain or a toothed belt such that one end of the belt or chain is positioned to be stationary above the conveying equipment (3), whereas the other end of the belt or chain is being wound up or unwound by shortening or lengthening by means of a drive.
- Installation according to claim 1, characterized in that at least one drive is located on each take-up shaft (18) and is connected with a take-up reel, around which a retaining strap or a retaining belt fixed above the conveying equipment is windable such that the take-up shaft (18) rotates during the winding-up operation and is lowered or raised and that the separating element (15) is simultaneously wound up or unwound, respectively.
- Installation according to claim 1, characterized in that the lower edge (16) of the separating element (15) is joined to the zone (17) between two collecting basins (1), in that the take-up shaft (18) is movable upward or downward by an overhead drive (23), and in that spring units are arranged on the take-up shaft (18) such that they are tensed by the upward motion and that they drive the take-up shaft (18) to wind up the separating element (15) during the downward motion.
- Installation according to claim 1, characterized in that spraying nozzles (9) are arranged to be movable upward and downward along the retaining devices (13).
- Installation according to claim 1, characterized in that the conveyance in cycles is controlled such that a conveying cycle takes place when and solely when the separating elements (15) and possibly the spraying nozzles (9) are in their lowermost position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4110032A DE4110032A1 (en) | 1991-03-27 | 1991-03-27 | PRE-TREATMENT PLANT FOR SPRAY-PRE-TREATMENT OF OBJECTS TO BE COATED IN A PORTRAIT COATING PLANT |
| DE4110032 | 1991-03-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0505694A1 EP0505694A1 (en) | 1992-09-30 |
| EP0505694B1 true EP0505694B1 (en) | 1994-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92101672A Expired - Lifetime EP0505694B1 (en) | 1991-03-27 | 1992-02-01 | Pretreatment installation for the pretreatment by spraying of objects to be coated in a subsequent coating installation |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0505694B1 (en) |
| AT (1) | ATE110303T1 (en) |
| DE (2) | DE4110032A1 (en) |
| DK (1) | DK0505694T3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19819486B4 (en) * | 1997-05-17 | 2009-01-15 | Volkswagen Ag | Carrier assembly for painting and painting |
| DE10033616A1 (en) * | 2000-07-11 | 2002-01-24 | Thomas Merkenschlager | Pre-treatment system for spray pre-treatment of objects to be coated in coating system has spray nozzle arrangement integrated into separating elements, removable/lowerable with separating elements |
| DE10210943B4 (en) * | 2002-03-13 | 2006-05-11 | Eisenmann Maschinenbau Gmbh & Co. Kg | Plant for treating objects |
| ITBG20130001A1 (en) * | 2013-01-18 | 2014-07-19 | Trasmetal Spa | PRETREATMENT DEVICE. |
| CN103174832A (en) * | 2013-03-07 | 2013-06-26 | 浙江华立涂装设备有限公司 | Water mist sealing device for coating line |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0230147A2 (en) * | 1985-12-31 | 1987-07-29 | Protectaire Systems Company | Air curtain housing for conveyor mechanism |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1786084A (en) * | 1926-01-12 | 1930-12-23 | George A Phinn | Porch curtain |
| DE743733C (en) * | 1938-09-25 | 1943-12-31 | Ludwig Franz Ludowici | Housing with injection openings for nozzles |
| GB887159A (en) * | 1959-11-09 | 1962-01-17 | Du Pont | Degreasing and coating apparatus and process |
| DE1621679A1 (en) * | 1966-02-04 | 1971-06-09 | Wilhelm Wache Gmbh | Arrangement for the treatment of metal workpieces with the help of at least two different fluids |
| US3952698A (en) * | 1973-09-27 | 1976-04-27 | Kaiser Aluminum & Chemical Corporation | Can treating system |
| US3906958A (en) * | 1974-06-21 | 1975-09-23 | Abbott Lab | Catheter adapter having filtered air vent |
| DE2823958C2 (en) * | 1978-06-01 | 1984-03-08 | Fritz Schäfer GmbH, 5908 Neunkirchen | Method and device for spray treatment, in particular for spray painting objects |
| US4506687A (en) * | 1982-06-10 | 1985-03-26 | Circuit Services Corporation | Printed circuit processing apparatus |
| DE8525625U1 (en) * | 1985-09-09 | 1985-10-24 | Schieffer GmbH & Co KG, 4780 Lippstadt | rolling gate |
| DE3806547A1 (en) * | 1987-04-30 | 1988-11-17 | Erich Kraemer | Electrostatic powder coating system |
| DK514587D0 (en) * | 1987-09-30 | 1987-09-30 | Moldow A S H | TREATMENT ROOMS AND PROCEDURES TO PREVENT THE DISPOSAL OF CONTAMINATED SUBSTANCES FROM THE SAME |
-
1991
- 1991-03-27 DE DE4110032A patent/DE4110032A1/en not_active Withdrawn
-
1992
- 1992-02-01 EP EP92101672A patent/EP0505694B1/en not_active Expired - Lifetime
- 1992-02-01 AT AT92101672T patent/ATE110303T1/en not_active IP Right Cessation
- 1992-02-01 DK DK92101672.1T patent/DK0505694T3/en active
- 1992-02-01 DE DE59200394T patent/DE59200394D1/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0230147A2 (en) * | 1985-12-31 | 1987-07-29 | Protectaire Systems Company | Air curtain housing for conveyor mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4110032A1 (en) | 1992-10-01 |
| DE59200394D1 (en) | 1994-09-29 |
| DK0505694T3 (en) | 1995-02-13 |
| ATE110303T1 (en) | 1994-09-15 |
| EP0505694A1 (en) | 1992-09-30 |
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