EP0779107A1 - Powder spray coating device - Google Patents

Powder spray coating device Download PDF

Info

Publication number
EP0779107A1
EP0779107A1 EP96115508A EP96115508A EP0779107A1 EP 0779107 A1 EP0779107 A1 EP 0779107A1 EP 96115508 A EP96115508 A EP 96115508A EP 96115508 A EP96115508 A EP 96115508A EP 0779107 A1 EP0779107 A1 EP 0779107A1
Authority
EP
European Patent Office
Prior art keywords
cabin
powder
spray device
spray
wall opening
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
Application number
EP96115508A
Other languages
German (de)
French (fr)
Other versions
EP0779107B1 (en
Inventor
Silvano Gelain
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nordson Corp
Original Assignee
Gema Switzerland GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7780287&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0779107(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Gema Switzerland GmbH filed Critical Gema Switzerland GmbH
Priority to DE29624328U priority Critical patent/DE29624328U1/en
Priority to DE29624327U priority patent/DE29624327U1/en
Publication of EP0779107A1 publication Critical patent/EP0779107A1/en
Application granted granted Critical
Publication of EP0779107B1 publication Critical patent/EP0779107B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B05B15/555—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids discharged by cleaning nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/48—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for particulate material

Definitions

  • the invention relates to a powder spray coating device according to the preamble of claim 1.
  • Powder spray coating devices are known for example from DE-A 44 18 288 and US-A 4 196 465.
  • the powder spray coating device contains a cabin, which has at least one wall opening for introducing a spray device.
  • the spray device is carried by a positioning device arranged outside the cabin, which is often designed as a lifting stand, which can move the spray device vertically up and down. So that the connection lines of the spray device can follow these movements, they must form a loop between their connection point on the spray device and a fixed attachment located outside the cabin. During the spray coating operation, powder particles flying around get onto the spray device and on its connecting lines.
  • the aim of the invention is to achieve the object of designing the powder spray coating device in such a way that a powder change can be carried out more quickly, in particular that less time and effort are required for cleaning the individual parts.
  • the invention has the advantage that the spray device and its connecting lines no longer have to be blown off manually with compressed air in a separate operation and then the blown-off powder particles lie outside the cabin, but that the spray device and its connecting lines are automatically cleaned with compressed air, either still during the spray coating process, but at least when the spraying device is removed from the cabin, whereby no powder outside the cabin can contaminate other objects, but rather is blown into the cabin by the compressed air.
  • Fig. 1 shows a cabin 2 and a positioning device 4 arranged outside of it, preferably a lifting stand, which carries one, several or, corresponding to Fig. 1, two spray device units 6 and can move vertically up and down to coat an article 8 to be coated with powder the spray device units 6 protrude from the positioning device 4 through a vertical wall slot 10 of the cabin 2 into the cabin 2 into a position opposite the object 8.
  • the object 8 is transported through the cabin 2 by a transport device 12, for example an endless conveyor chain, transversely to the longitudinal direction of the spray device units 6.
  • a transport device 12 for example an endless conveyor chain, transversely to the longitudinal direction of the spray device units 6.
  • two through openings 14 and 15 are formed in the end faces of the cabin.
  • the wall slot 10 there can also be a wall slot 10 for spray device units 6 or another opening, for example for an exhaust air filter, in the other longitudinal wall of the cabin 2, or this opposite wall can be closed.
  • the spray device units 6 each consist of a spray device 20 of the type known from DE-A 44 18 288 or US-A 4 196 465 or another type. Furthermore, each spray device unit 6 contains a carrier tube 22, at the front end of which the spray device 20 is axially aligned and its rear end is attached to the positioning device 4. All connecting lines, for example 24, 25 and 26 are axially passed through their associated support tube 22, so that they cannot be contaminated by powder particles, dust or other elements.
  • the connecting lines 24, 25 and 26 can protrude from the rear end 28 of the carrier tube 22, which is relatively far away from the cabin 2, or can be connected to connecting elements which are fastened to the rear tube end 28 and to which external lines can be connected.
  • the spray devices 20 and their carrier tubes 22 are preferably designed such that their surfaces are aligned with one another in the longitudinal direction of the tube or merge into one another via step-free gradual transitions, so that there are no niches or corners on which powder can be deposited.
  • at least the surface of not only the support tube 22 but also the spray device 2 is rounded so that powder can slide off.
  • each spray device 20 has a circular or oval outer circumference.
  • the high-voltage electrode is preferably at least partially housed in a compressed air duct, from the compressed air of which it is washed so that no powder particles can collect on it.
  • the three connecting lines 24, 25 and 26 thus consist at least of a powder hose or a powder tube, an electrical cable, preferably a low-voltage cable for the high-voltage generator, and a compressed-air hose.
  • the high voltage generator can also be arranged externally instead of within the spray device 20, in which case a high voltage cable is required instead of a low voltage cable. According to another embodiment, work can be carried out without high voltage if the powder particles are electrostatically charged by friction in their powder channel, so-called tribo-electric charging or tribo-electric powder coating.
  • compressed air nozzles 30 are arranged, the compressed air jet direction of which is directed toward the location of the spray device units 6 and at the same time from the outside inwards into the wall slot 10, in such a way that their compressed air jets blow off powder particles from the spray device units 6 and through the Blow the wall slot 10 into the cabin 2.
  • the compressed air nozzles 30 are supplied with compressed air at least when the spray device units 6 are led out of the cabin 2, so that they are then automatically cleaned by the compressed air and the powder blown off by them is blown into the cabin 2. This not only cleans the spray device units 6, but also prevents powder particles outside the cabin 2 from settling on external objects.
  • compressed air can also be blown from the compressed air nozzles 30 in the aforementioned manner against the spray device units 6 and through the cabin gap 10 into the cabin 2, while objects 8 are coated with powder. It is important, however, to blow off the spray coating device 6 whenever it is moved out of the cabin 2. For a powder change, cleaning of the spray device units 6 by hand and contamination of objects outside the cabin are avoided. This significantly speeds up the powder change and less work is required. The cleaning by means of the compressed air of the compressed air nozzles 30 can take place automatically instead of by hand as in the prior art.
  • the compressed air jet direction of the compressed air nozzles 30 is indicated in the drawings by arrows 32.
  • the compressed air blowing nozzles 30 can be attached to the cabin 2 or to a device arranged outside the cabin 2, as shown in FIGS. 1 and 2. For example, they could also be attached to the positioning device 4.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Nozzles (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Abstract

The equipment has a cabin (2) with at least one wall opening (10) for introducing a spray coating unit (6). The compressed air jet direction (32) of at least one compressed air blowing nozzle (30) at the wall opening (10) is directed simultaneously against the spray coating unit and from the outside to the inside through the wall opening. The nozzle blows powder from the spray coating unit into the cabin. The spray coating unit consists of a spray (20) and a tube (22), which carries the spray at one end and is fixed to a positioning device (4) at the other, which is outside the cabin.

Description

Die Erfindung betrifft eine Pulver-Sprühbeschichtungsvorrichtung gemäß dem Oberbegriff von Anspruch 1.The invention relates to a powder spray coating device according to the preamble of claim 1.

Pulver-Sprühbeschichtungsvorrichtungen sind beispielsweise aus der DE-A 44 18 288 und der US-A 4 196 465 bekannt.Powder spray coating devices are known for example from DE-A 44 18 288 and US-A 4 196 465.

Die Pulver-Sprühbeschichtungsvorrichtung nach der Erfindung enthält eine Kabine, die mindestens eine Wandöffnung zum Einführen einer Sprühvorrichtung aufweist An die Sprühvorrichtung ist ein Pulverschlauch für die Zuführung von Beschichtungspulver, ein elektrisches Kabel zur Zuführung elektrischer Spannung und meistens auch ein Druckluftschlauch zur Zufuhr von Druckluft angeschlossen. Die Sprühvorrichtung wird von einer außerhalb der Kabine angeordneten Positioniervorrichtung getragen, welche häufig als Hubständer ausgebildet ist, welcher die Sprühvorrichtung vertikal auf und ab bewegen kann. Damit die Anschlußleitungen der Sprühvorrichtung diesen Bewegungen folgen können, müssen sie zwischen ihrer Anschlußstelle an der Sprühvorrichtung und einer außerhalb der Kabine gelegenen ortsfesten Befestigung eine Schlaufe bilden. Während des Sprühbeschichtungsbetriebes gelangen herumfliegende Pulverpartikel auf die Sprühvorrichtung und auf deren Anschlußleitungen. Bei einem Farbwechsel bzw. Wechsel von einer Pulversorte auf eine andere Pulversorte muß nicht nur die Kabine gereinigt werden, sondern auch die Sprühvorrichtung mit ihren Anschlußleitungen aus der Kabine herausgenommen und gereinigt werden, beispielsweise mit Druckluft abgeblasen werden, damit das neu zu verwendende Pulver nicht durch Pulverpartikel des zuvor verwendeten Pulvers verunreinigt wird.The powder spray coating device according to the invention contains a cabin, which has at least one wall opening for introducing a spray device. The spray device is carried by a positioning device arranged outside the cabin, which is often designed as a lifting stand, which can move the spray device vertically up and down. So that the connection lines of the spray device can follow these movements, they must form a loop between their connection point on the spray device and a fixed attachment located outside the cabin. During the spray coating operation, powder particles flying around get onto the spray device and on its connecting lines. When changing colors or changing from one type of powder to another type of powder, not only must the cabin be cleaned, but also the spraying device with its connecting lines must be removed from the cabin and cleaned, for example blown off with compressed air, so that the new powder to be used does not get through Powder particles of the previously used powder is contaminated.

Durch die Erfindung soll die Aufgabe gelöst werden, die Pulver-Sprühbeschichtungsvorrichtung derart auszubilden, daß ein Pulverwechsel schneller durchgeführt werden kann, insbesondere daß für die Reinigung der Einzelteile weniger Zeit und Arbeitsaufwand benötigt werden.The aim of the invention is to achieve the object of designing the powder spray coating device in such a way that a powder change can be carried out more quickly, in particular that less time and effort are required for cleaning the individual parts.

Diese Aufgabe wird gemäß der Erfindung durch die Merkmale von Anspruch 1 gelöst.This object is achieved according to the invention by the features of claim 1.

Die Erfindung hat den Vorteil, daß die Sprühvorrichtung und ihre Anschlußleitungen nicht mehr von Hand in einem getrennten Arbeitsgang mit Druckluft abgeblasen werden müssen und dann die abgeblasenen Pulverpartikel außerhalb der Kabine herumliegen, sondern daß die Sprühvorrichtung und ihre Ahschlußleitungen automatisch mit Druckluft gereinigt werden, entweder noch während des Sprühbeschichtungsvorganges, zumindest aber dann, wenn die Sprühvorrichtung aus der Kabine herausgenommen wird, wobei kein Pulver außerhalb der Kabine andere Gegenstände verschmutzen kann, sondern von der Druckluft in die Kabine hineingeblasen wird.The invention has the advantage that the spray device and its connecting lines no longer have to be blown off manually with compressed air in a separate operation and then the blown-off powder particles lie outside the cabin, but that the spray device and its connecting lines are automatically cleaned with compressed air, either still during the spray coating process, but at least when the spraying device is removed from the cabin, whereby no powder outside the cabin can contaminate other objects, but rather is blown into the cabin by the compressed air.

Die Erfindung wird im folgenden mit Bezug auf die Zeichnungen anhand einer bevorzugten Ausführungsform als Beispiel beschrieben. In den Zeichnungen zeigen

Fig. 1
schematisch einen Vertikalschnitt der Pulver-Sprühbeschichtungsvorrichtung nach der Erfindung und
Fig. 2
eine Querschnittsansicht der Pulver-Sprühbeschichtungsvorrichtung von Fig. 1 längs der Ebene II - II.
The invention is described below with reference to the drawings using a preferred embodiment as an example. Show in the drawings
Fig. 1
schematically shows a vertical section of the powder spray coating device according to the invention and
Fig. 2
a cross-sectional view of the powder spray coating device of Fig. 1 along the plane II - II.

Fig. 1 zeigt eine Kabine 2 und eine außerhalb von ihr angeordnete Positioniervorrichtung 4, vorzugsweise ein Hubständer, welcher eine, mehrere oder entsprechend Fig. 1 zwei Sprühvorrichtungseinheiten 6 trägt und vertikal auf und abbewegen kann zur Beschichtung eines mit Pulver zu beschichtenden Gegenstandes 8. Hierzu ragen die Sprühvorrichtungseinheiten 6 von der Positioniervorrichtung 4 durch einen vertikalen Wandschlitz 10 der Kabine 2 bis in die Kabine 2 hinein in eine dem Gegenstand 8 gegenüberliegende Position. Der Gegenstand 8 wird von einer Transportvorrichtung 12, beispielsweise einer endlosen Förderkette, quer zur Längsrichtung der Sprühvorrichtungseinheiten 6 durch die Kabine 2 transportiert. Hierzu sind in den Stirnseiten der Kabine 2 Durchgangsöffnungen 14 und 15 gebildet. Gegenüber dem Wandschlitz 10 kann sich in der anderen Längswand der Kabine 2 ebenfalls ein Wanschlitz 10 für Sprühvorrichtungseinheiten 6 oder eine andere Öffnung, beispielsweise für einen Abluftfilter befinden, oder diese gegenüberliegende Wand kann geschlossen sein.Fig. 1 shows a cabin 2 and a positioning device 4 arranged outside of it, preferably a lifting stand, which carries one, several or, corresponding to Fig. 1, two spray device units 6 and can move vertically up and down to coat an article 8 to be coated with powder the spray device units 6 protrude from the positioning device 4 through a vertical wall slot 10 of the cabin 2 into the cabin 2 into a position opposite the object 8. The object 8 is transported through the cabin 2 by a transport device 12, for example an endless conveyor chain, transversely to the longitudinal direction of the spray device units 6. For this purpose, two through openings 14 and 15 are formed in the end faces of the cabin. Opposite the wall slot 10 there can also be a wall slot 10 for spray device units 6 or another opening, for example for an exhaust air filter, in the other longitudinal wall of the cabin 2, or this opposite wall can be closed.

Die Sprühvorrichtungseinheiten 6 bestehen je aus einer Sprühvorrichtung 20 nach der aus der DE-A 44 18 288 oder der US-A 4 196 465 bekannten Art oder einer anderen Art. Ferner enthält jede Sprühvorrichtungseinheit 6 ein Trägerrohr 22, an dessen vorderem Ende die Sprühvorrichtung 20 axial fluchtend befestigt ist und dessen hinteres Ende an der Positioniervorrichtung 4 befestigt ist. Alle Anschlußleitungen, zum Beispiel 24, 25 und 26 sind durch ihr zugehöriges Trägerrohr 22 axial hindurchgeführt, so daß sie nicht durch Pulverpartikel, Staub oder andere Elemente verunreinigt werden können. Die Anschlußleitungen 24, 25 und 26 können aus dem hinteren Ende 28 des Trägerrohres 22, welches relativ weit weg ist von der Kabine 2, herausragen oder an Anschlußelemente angeschlossen sein, die am hinteren Rohrende 28 befestigt sind und an welche externe Leitungen anschließbar sind.The spray device units 6 each consist of a spray device 20 of the type known from DE-A 44 18 288 or US-A 4 196 465 or another type. Furthermore, each spray device unit 6 contains a carrier tube 22, at the front end of which the spray device 20 is axially aligned and its rear end is attached to the positioning device 4. All connecting lines, for example 24, 25 and 26 are axially passed through their associated support tube 22, so that they cannot be contaminated by powder particles, dust or other elements. The connecting lines 24, 25 and 26 can protrude from the rear end 28 of the carrier tube 22, which is relatively far away from the cabin 2, or can be connected to connecting elements which are fastened to the rear tube end 28 and to which external lines can be connected.

Die Sprühvorrichtungen 20 und ihre Trägerrohre 22 sind vorzugsweise so ausgebildet, daß ihre Oberflächen in Rohrlängsrichtung miteinander fluchten oder über stufenfreie allmähliche Übergänge ineinander übergehen, so daß keine Nischen oder Ecken vorhanden sind, an welchen sich Pulver ablagern kann. Vorzugsweise ist mindestens die Oberfläche nicht nur des Trägerrohres 22, sondern auch der Sprühvorrichtung 2 abgerundet, damit Pulver abrutschen kann. Gemäß einer bevorzugten Ausführungsform hat jede Sprühvorrichtung 20 einen kreisrunden oder ovalen Außenumfang.The spray devices 20 and their carrier tubes 22 are preferably designed such that their surfaces are aligned with one another in the longitudinal direction of the tube or merge into one another via step-free gradual transitions, so that there are no niches or corners on which powder can be deposited. Preferably, at least the surface of not only the support tube 22 but also the spray device 2 is rounded so that powder can slide off. According to a preferred embodiment, each spray device 20 has a circular or oval outer circumference.

Die Sprühvorrichtungen 20 enthalten vorzugsweise wie die Sprühvorrichtungen des genannten Standes der Technik eine oder mehrere Hochspannungselektroden zur elektrostatischen Aufladung des Pulvers und einen Hochspannungserzeuger zur Erzeugung der Hochspannung für die Hochspannungselektroden. Vorzugsweise ist die Hochspannungselektrode mindestens teilweise in einem Druckluftkanal untergebracht, von deren Druckluft sie umspült wird, damit keine Pulverpartikel sich an ihr ansammeln können. Damit bestehen die drei Anschlußleitungen 24, 25 und 26 mindestens aus einem Pulverschlauch oder einem Pulverrohr, einem elektrischen Kabel, vorzugsweise einem Niederspannungskabel für den Hochspannungserzeuger, und einem Druckluftschlauch. Der Hochspannungserzeuger kann anstatt innerhalb der Sprühvorrichtung 20 auch extern angeordnet sein, in welchem Falle ein Hochspannungskabel statt eines Niederspannungskabel benötigt wird. Gemäß einer anderen Ausführungsform kann ohne Hochspannung gearbeitet werden, wenn die Pulverpartikel durch Reibung in ihrem Pulverkanal elektrostatisch aufgeladen werden, sogenannte tribo-elektrische Aufladung bzw. tribo-elektrische Pulverbeschichtung.The spray devices 20, like the spray devices of the cited prior art, preferably contain one or more high-voltage electrodes for electrostatically charging the powder and a high-voltage generator for generating the high voltage for the high-voltage electrodes. The high-voltage electrode is preferably at least partially housed in a compressed air duct, from the compressed air of which it is washed so that no powder particles can collect on it. The three connecting lines 24, 25 and 26 thus consist at least of a powder hose or a powder tube, an electrical cable, preferably a low-voltage cable for the high-voltage generator, and a compressed-air hose. The high voltage generator can also be arranged externally instead of within the spray device 20, in which case a high voltage cable is required instead of a low voltage cable. According to another embodiment, work can be carried out without high voltage if the powder particles are electrostatically charged by friction in their powder channel, so-called tribo-electric charging or tribo-electric powder coating.

Am Wandschlitz 10 sind Druckluftdüsen 30 angeordnet, deren Druckluft-Strahlrichtung gegen den Ort der Sprühvorrichtungseinheiten 6 und gleichzeitig von außen nach innen in den Wandschlitz 10 gerichtet sind, derart, daß ihre Druckluftstrahlen Pulverpartikel von den Sprühvorrichtungseinheiten 6 abblasen und durch den Wandschlitz 10 hindurch in die Kabine 2 hineinblasen. Die Druckluftdüsen 30 werden mindestens dann mit Druckluft beliefert, wenn die Sprühvorrichtungseinheiten 6 aus der Kabine 2 herausgeführt werden, damit sie dann durch die Druckluft automatisch gereinigt werden und das von ihnen abgeblasene Pulver in die Kabine 2 geblasen wird. Damit werden nicht nur die Sprühvorrichtungseinheiten 6 gesäubert, sondern es wird auch vermieden, daß Pulverpartikel außerhalb der Kabine 2 sich auf externe Gegenstände absetzen. Falls es gewünscht wird, kann von den Druckluftdüsen 30 auch dann Druckluft in der vorgenannten Weise gegen die Sprühvorrichtungseinheiten 6 und durch den Kabinenspalt 10 hindurch in die Kabine 2 geblasen werden, während Gegenstände 8 mit Pulver beschichtet werden. Wichtig ist das Abblasen der Sprühbeschichtungsvorrichtung 6 jedoch immer dann, wenn sie aus der Kabine 2 herausbewegt wird. Dadurch wird für einen Pulverwechsel ein Säubern der Sprühvorrichtungseinheiten 6 von Hand und eine Verschmutzung von Gegenständer außerhalb der Kabine vermieden. Damit wird der Pulverwechsel wesentlich beschleunigt und es ist weniger Arbeit hierfür erforderlich. Die Reinigung mittels der Druckluft der Druckluftdüsen 30 kann automatisch erfolgen, statt wie beim Stand der Technik von Hand.At the wall slot 10, compressed air nozzles 30 are arranged, the compressed air jet direction of which is directed toward the location of the spray device units 6 and at the same time from the outside inwards into the wall slot 10, in such a way that their compressed air jets blow off powder particles from the spray device units 6 and through the Blow the wall slot 10 into the cabin 2. The compressed air nozzles 30 are supplied with compressed air at least when the spray device units 6 are led out of the cabin 2, so that they are then automatically cleaned by the compressed air and the powder blown off by them is blown into the cabin 2. This not only cleans the spray device units 6, but also prevents powder particles outside the cabin 2 from settling on external objects. If desired, compressed air can also be blown from the compressed air nozzles 30 in the aforementioned manner against the spray device units 6 and through the cabin gap 10 into the cabin 2, while objects 8 are coated with powder. It is important, however, to blow off the spray coating device 6 whenever it is moved out of the cabin 2. For a powder change, cleaning of the spray device units 6 by hand and contamination of objects outside the cabin are avoided. This significantly speeds up the powder change and less work is required. The cleaning by means of the compressed air of the compressed air nozzles 30 can take place automatically instead of by hand as in the prior art.

Die Druckluft-Strahlrichtung der Druckluftdüsen 30 ist in den Zeichnungen durch Pfeile 32 angegeben.The compressed air jet direction of the compressed air nozzles 30 is indicated in the drawings by arrows 32.

Die Druckluftblasdüsen 30 können entsprechend Fig. 1 und 2 an der Kabine 2 oder an einer außerhalb der Kabine 2 angeordneten Vorrichtung befestigt werden. Beispielsweise wäre ihre Befestigung auch an der Positioniervorrichtung 4 möglich.The compressed air blowing nozzles 30 can be attached to the cabin 2 or to a device arranged outside the cabin 2, as shown in FIGS. 1 and 2. For example, they could also be attached to the positioning device 4.

Claims (3)

Pulver-Sprühbeschichtungsvorrichtung enthaltend eine Kabine (2), die mindestens eine Wandöffnung (10) zum Einführen einer Sprühvorrichtungseinheit (6) in die Kabine (2) aufweist,
dadurch gekennzeichnet, daß an der Wandöffnung (10) mindestens eine Druckluftblasdüse (30) angeordnet ist, deren Druckluft-Strahlrichtung (32) gegen den Ort der Sprühvorrichtungseinheit (6) und gleichzeitig von außen nach innen durch die Wandöffnung (10) gerichtet ist, um von der Sprühvorrichtungseinheit (6) Pulver ab und in die Kabine (2) hineinzublasen.Powder spray coating device comprising a cabin (2) which has at least one wall opening (10) for introducing a spray device unit (6) into the cabin (2),
characterized in that at least one compressed air blowing nozzle (30) is arranged on the wall opening (10), the compressed air jet direction (32) of which is directed towards the location of the spray device unit (6) and at the same time from the outside in through the wall opening (10) to blow powder from the sprayer unit (6) and into the booth (2). Pulver-Sprühbeschichtungsvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß die Sprühvorrichtungseinheit (6) aus einer Sprühvorrichtung (20) und einem rohrartigen Träger (6) besteht, welcher an seinem vorderen Ende die Sprühvorrichtung (20) trägt und an seinem hinteren Ende an einer Positioniervorrichtung (4) befestigt ist, welche außerhalb der Kabine (2) angeordnet ist, während sich der Rohrkörper (22) mit der an seinem vorderen Ende befestigten Sprühvorrichtung (20) durch eine Wandöffnung (10) der Kabine (2) in die Kabine (2) hineinerstreckt, und daß alle Anschlußleitungen (24, 25, 26) der Sprühvorrichtung (20) durch das Trägerrohr (22) axial hindurchgeführt sind.Powder spray coating apparatus according to claim 1,
characterized in that the spray device unit (6) consists of a spray device (20) and a tubular support (6) which carries the spray device (20) at its front end and is attached at its rear end to a positioning device (4) which is arranged outside the cabin (2), while the tubular body (22) with the spray device (20) attached to its front end extends through a wall opening (10) of the cabin (2) into the cabin (2), and that all connecting lines (24, 25, 26) of the spray device (20) are passed axially through the carrier tube (22). Elektrostatisches Pulver-Sprühbeschichtungsverfahren, bei welchem mindestens eine Sprühvorrichtungseinheit (6) durch eine Kabinenwandöffnung (10) in eine Kabine (2) eingeführt wird, um darin Beschichtungspulver auf Gegenstände (8) zu sprühen, und nach dem Sprühbeschichtungsvorgang durch die Kabinenwandöffnung (10) hindurch wieder aus der Kabine (2) herausgeführt wird,
dadurch gekennzeichnet, daß die Sprühvorrichtungseinheit (6), während sie aus der Kabine (2) herausgeführt wird, mit Druckluft von Druckluftdüsen (30), welche an einem Träger (20) befestigt und an der Kabinenwandöffnung (10) angeordnet sind, abgeblasen wird und dabei von der Sprühvorrichtungseinheit (6) abgeblasenes Pulver an der Kabinenwandöffnung (10) in die Kabine (2) hineingeblasen wird.Electrostatic powder spray coating method, in which at least one spray device unit (6) through a cabin wall opening (10) into a cabin (2) is introduced in order to spray coating powder onto objects (8) therein, and after the spray coating process is led out of the cabin (2) through the cabin wall opening (10),
characterized in that the spray device unit (6), while being led out of the cabin (2), is blown off with compressed air from compressed air nozzles (30) which are fastened to a carrier (20) and arranged at the cabin wall opening (10), and powder blown off by the spray device unit (6) is blown into the cabin (2) at the cabin wall opening (10).
EP96115508A 1995-12-15 1996-09-27 Powder spray coating device Revoked EP0779107B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE29624328U DE29624328U1 (en) 1995-12-15 1996-09-27 Powder spray coating apparatus
DE29624327U DE29624327U1 (en) 1995-12-15 1996-09-27 Powder spray coating apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19546973A DE19546973A1 (en) 1995-12-15 1995-12-15 Powder spray coater
DE19546973 1995-12-15

Publications (2)

Publication Number Publication Date
EP0779107A1 true EP0779107A1 (en) 1997-06-18
EP0779107B1 EP0779107B1 (en) 1999-11-17

Family

ID=7780287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115508A Revoked EP0779107B1 (en) 1995-12-15 1996-09-27 Powder spray coating device

Country Status (3)

Country Link
EP (1) EP0779107B1 (en)
AT (1) ATE186659T1 (en)
DE (2) DE19546973A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0951946A3 (en) * 1998-03-09 2000-06-14 Daniel Seiler Coating tunnel for powder coating of flat workpieces
FR2795978A1 (en) 1999-07-06 2001-01-12 Sames Sa Cleaning apparatus inside projection cabin comprises projector surrounded by closed loop connected to compressed air source and drilled with holes directed to loop center
WO2002060595A1 (en) * 2001-01-31 2002-08-08 Nordson Corporation Powder spray gun mount and cleaning arrangements
ITBG20100068A1 (en) * 2010-12-28 2012-06-29 Trasmetal Spa PAINTING CABIN FOR MANUFACTURING PAINTING SYSTEMS.
JP2014519968A (en) * 2011-05-02 2014-08-21 ノードソン コーポレーション Container dense phase powder coating system
CN110420786A (en) * 2019-07-18 2019-11-08 盐城恒立汽车配件有限公司 A kind of automobile parts spraying frock
CN111729764A (en) * 2020-07-17 2020-10-02 中冶京诚工程技术有限公司 Vertical plate belt powder spraying device with blowing mechanism
CN111729766A (en) * 2020-07-17 2020-10-02 中冶京诚工程技术有限公司 Vertical plate belt powder spraying device capable of improving powder coating rate

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19805514A1 (en) * 1998-02-11 1999-08-19 Wagner Int Powder coating plant with coating cabin
DE10245326A1 (en) * 2002-09-27 2004-04-08 Abb Patent Gmbh A method for atomizing paint coating materials has an ultrasonic generator and reflector setting up standing waves maximized at the center
CN104588251B (en) * 2015-02-13 2019-04-26 中冶京诚工程技术有限公司 Powder shelters from and cleaning device in electrostatic powder spraying
GB201806201D0 (en) * 2018-04-16 2018-05-30 Carlisle Fluid Tech Inc Coating Booth

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1501841A (en) * 1975-02-13 1978-02-22 Air Ind Method and apparatus for electrostatic powder-coating
JPS62254867A (en) * 1986-04-28 1987-11-06 Takahashi Toso Kogyosho:Kk Method and apparatus for dustproof painting
JPS62277173A (en) * 1986-05-23 1987-12-02 Honda Motor Co Ltd Painting booth
US4715314A (en) * 1985-04-30 1987-12-29 H. U. Ramseier Electrostatic powder coating installation
US5244499A (en) * 1992-06-19 1993-09-14 Russell Mazakas Powdered paint recovery tent for vertical extrusions

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3270711A (en) * 1963-07-01 1966-09-06 Glasser Products Corp Electrostatic coating system
US3424129A (en) * 1967-04-20 1969-01-28 Devilbiss Co Spray booth
DE3014114C2 (en) * 1980-04-12 1982-04-29 Gema AG Apparatebau, 9015 St. Gallen Device for the automatic coating of objects with a spray device
JPS644272A (en) * 1987-06-24 1989-01-09 Hideo Nagasaka Electrostatic powder coating device
DE3919614A1 (en) * 1989-06-15 1990-12-20 Gema Ransburg Ag SYSTEM FOR ELECTROSTATIC SPRAY COATING WITH POWDER
DE4131287A1 (en) * 1991-09-20 1993-03-25 Gema Volstatic Ag Powder spray coating installation - vertically displaces spray head within spray booth relative to coated items fed in curved path
DE4312262A1 (en) * 1993-04-15 1994-10-20 Gema Volstatic Ag Electrostatic spray device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1501841A (en) * 1975-02-13 1978-02-22 Air Ind Method and apparatus for electrostatic powder-coating
US4715314A (en) * 1985-04-30 1987-12-29 H. U. Ramseier Electrostatic powder coating installation
JPS62254867A (en) * 1986-04-28 1987-11-06 Takahashi Toso Kogyosho:Kk Method and apparatus for dustproof painting
JPS62277173A (en) * 1986-05-23 1987-12-02 Honda Motor Co Ltd Painting booth
US5244499A (en) * 1992-06-19 1993-09-14 Russell Mazakas Powdered paint recovery tent for vertical extrusions

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 139 (C - 491) 27 April 1988 (1988-04-27) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 165 (C - 496) 18 May 1988 (1988-05-18) *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0951946A3 (en) * 1998-03-09 2000-06-14 Daniel Seiler Coating tunnel for powder coating of flat workpieces
FR2795978A1 (en) 1999-07-06 2001-01-12 Sames Sa Cleaning apparatus inside projection cabin comprises projector surrounded by closed loop connected to compressed air source and drilled with holes directed to loop center
WO2002060595A1 (en) * 2001-01-31 2002-08-08 Nordson Corporation Powder spray gun mount and cleaning arrangements
US7172138B2 (en) 2001-01-31 2007-02-06 Nordson Corporation Powder spray gun mount and cleaning arrangements
ITBG20100068A1 (en) * 2010-12-28 2012-06-29 Trasmetal Spa PAINTING CABIN FOR MANUFACTURING PAINTING SYSTEMS.
WO2012089787A1 (en) * 2010-12-28 2012-07-05 Trasmetal S.P.A. Paint booth for painting plants for products
JP2014519968A (en) * 2011-05-02 2014-08-21 ノードソン コーポレーション Container dense phase powder coating system
CN110420786A (en) * 2019-07-18 2019-11-08 盐城恒立汽车配件有限公司 A kind of automobile parts spraying frock
CN111729764A (en) * 2020-07-17 2020-10-02 中冶京诚工程技术有限公司 Vertical plate belt powder spraying device with blowing mechanism
CN111729766A (en) * 2020-07-17 2020-10-02 中冶京诚工程技术有限公司 Vertical plate belt powder spraying device capable of improving powder coating rate

Also Published As

Publication number Publication date
ATE186659T1 (en) 1999-12-15
DE59603672D1 (en) 1999-12-23
EP0779107B1 (en) 1999-11-17
DE19546973A1 (en) 1997-06-19

Similar Documents

Publication Publication Date Title
EP0779105B1 (en) Spray coating device for electrostatic spray coating
EP0236794B1 (en) Electrostatic spray device for coating powder
EP1671706B1 (en) Process and device for cleaning spraying devices
DE10115376B4 (en) Plant for powder coating of objects
EP3459642A1 (en) Powder coating assembly for coating a workpiece with coating powder
EP0200681A1 (en) Electrostatic-coating installation
DE102014016364A1 (en) Cleaning method and cleaning device for one or more parts of an application system
EP0779107B1 (en) Powder spray coating device
EP0292679A1 (en) Spraying equipment for spray-coating of objects
EP1104333A1 (en) Spray gun for coating objects
DE3941927C1 (en)
EP0684080A1 (en) Electrostatic spray device
DE102010009069A1 (en) Device for color powder coating of object, has powder squirting horizontal bar comprising area that is connected with after filter by bypassing cyclone arrangement, where arrangement is arranged downstream of after filter
EP0777534B1 (en) Workpiece spray-painting device
EP0723815B1 (en) Spray device for coating material
DE102004040162B4 (en) Device for coating objects
EP0328070B1 (en) Installation for electrostatic powder coating with a cubicle for receiving the objects to be coated
EP0114252A1 (en) Equipment for electrostatic paint spraying
DE4131287A1 (en) Powder spray coating installation - vertically displaces spray head within spray booth relative to coated items fed in curved path
DE10134574B4 (en) Method of applying a paint to a fabric
EP0745430A2 (en) Cleaning method and apparatus for coating powder
DE2946436A1 (en) SPRAYING CAB
DE19632899A1 (en) Device for dusting moving objects, in particular printed paper sheets
DE10230595A1 (en) Powder coating plant
DE3608426C2 (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19960927

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR IT LI

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ITW GEMA AG

17Q First examination report despatched

Effective date: 19990203

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR IT LI

REF Corresponds to:

Ref document number: 186659

Country of ref document: AT

Date of ref document: 19991215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59603672

Country of ref document: DE

Date of ref document: 19991223

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO TORTA S.R.L.

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000930

26 Opposition filed

Opponent name: WAGNER INTERNATIONAL AG

Effective date: 20000817

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: NORDSON CORPORATION

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

BERE Be: lapsed

Owner name: ITW GEMA A.G.

Effective date: 20000930

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: ITW GEMA AG TRANSFER- NORDSON CORPORATION

Ref country code: CH

Ref legal event code: NV

Representative=s name: BRAUN & PARTNER PATENT-, MARKEN-, RECHTSANWAELTE

PLAT Information related to reply to examination report in opposition deleted

Free format text: ORIGINAL CODE: EPIDOSDORE3

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

PLAT Information related to reply to examination report in opposition deleted

Free format text: ORIGINAL CODE: EPIDOSDORE3

PLBC Reply to examination report in opposition received

Free format text: ORIGINAL CODE: EPIDOSNORE3

PLBC Reply to examination report in opposition received

Free format text: ORIGINAL CODE: EPIDOSNORE3

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

PLAH Information related to despatch of examination report in opposition + time limit modified

Free format text: ORIGINAL CODE: EPIDOSCORE2

PLAH Information related to despatch of examination report in opposition + time limit modified

Free format text: ORIGINAL CODE: EPIDOSCORE2

PLBC Reply to examination report in opposition received

Free format text: ORIGINAL CODE: EPIDOSNORE3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20080915

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20080925

Year of fee payment: 13

Ref country code: FR

Payment date: 20080912

Year of fee payment: 13

Ref country code: AT

Payment date: 20080915

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080919

Year of fee payment: 13

RDAF Communication despatched that patent is revoked

Free format text: ORIGINAL CODE: EPIDOSNREV1

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

27W Patent revoked

Effective date: 20090305