EP0779107A1 - Dispositif de revêtement de poudre par pulvérisation - Google Patents

Dispositif de revêtement de poudre par pulvérisation Download PDF

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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)
English (en)
Other versions
EP0779107B1 (fr
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=google_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/de
Priority to DE29624327U priority patent/DE29624327U1/de
Publication of EP0779107A1 publication Critical patent/EP0779107A1/fr
Application granted granted Critical
Publication of EP0779107B1 publication Critical patent/EP0779107B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Nozzles (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
EP96115508A 1995-12-15 1996-09-27 Dispositif de revêtement de poudre par pulvérisation Revoked EP0779107B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE29624328U DE29624328U1 (de) 1995-12-15 1996-09-27 Pulver-Sprühbeschichtungsvorrichtung
DE29624327U DE29624327U1 (de) 1995-12-15 1996-09-27 Pulver-Sprühbeschichtungsvorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19546973A DE19546973A1 (de) 1995-12-15 1995-12-15 Pulver-Sprühbeschichtungsvorrichtung
DE19546973 1995-12-15

Publications (2)

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

Family

ID=7780287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115508A Revoked EP0779107B1 (fr) 1995-12-15 1996-09-27 Dispositif de revêtement de poudre par pulvérisation

Country Status (3)

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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0951946A3 (fr) * 1998-03-09 2000-06-14 Daniel Seiler Tunnel de revêtement pour le revêtement par poudrage de pièces plates
FR2795978A1 (fr) 1999-07-06 2001-01-12 Sames Sa Dispositif et procede de nettoyage d'au moins un projecteur dans une installation de projection de produit de revetement pulverulent
WO2002060595A1 (fr) * 2001-01-31 2002-08-08 Nordson Corporation Dispositifs de support et de nettoyage pour des pistolets pulverisant de la poudre
ITBG20100068A1 (it) * 2010-12-28 2012-06-29 Trasmetal Spa Cabina di verniciatura per impianti di verniciatura di manufatti.
JP2014519968A (ja) * 2011-05-02 2014-08-21 ノードソン コーポレーション 容器の濃厚相粉体コーティングシステム
CN110420786A (zh) * 2019-07-18 2019-11-08 盐城恒立汽车配件有限公司 一种汽车配件喷涂工装

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19805514A1 (de) * 1998-02-11 1999-08-19 Wagner Int Pulverbeschichtungsanlage
DE10245326A1 (de) * 2002-09-27 2004-04-08 Abb Patent Gmbh Ultraschall-Stehwellen-Zerstäuberanordnung
CN104588251B (zh) * 2015-02-13 2019-04-26 中冶京诚工程技术有限公司 一种静电粉末喷涂中粉末遮挡和清扫装置
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 (ja) * 1986-04-28 1987-11-06 Takahashi Toso Kogyosho:Kk 除塵塗装装置
JPS62277173A (ja) * 1986-05-23 1987-12-02 Honda Motor Co Ltd 塗装ブ−ス
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 (de) * 1980-04-12 1982-04-29 Gema AG Apparatebau, 9015 St. Gallen Einrichtung zum automatischen Beschichten von Gegenständen mit einer Spritzvorrichtung
JPS644272A (en) * 1987-06-24 1989-01-09 Hideo Nagasaka Electrostatic powder coating device
DE3919614A1 (de) * 1989-06-15 1990-12-20 Gema Ransburg Ag Anlage zum elektrostatischen spruehbeschichten mit pulver
DE4131287A1 (de) * 1991-09-20 1993-03-25 Gema Volstatic Ag Pulver-spruehbeschichtungsanlage
DE4312262A1 (de) * 1993-04-15 1994-10-20 Gema Volstatic Ag Elektrostatische Sprühvorrichtung

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 (ja) * 1986-04-28 1987-11-06 Takahashi Toso Kogyosho:Kk 除塵塗装装置
JPS62277173A (ja) * 1986-05-23 1987-12-02 Honda Motor Co Ltd 塗装ブ−ス
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 (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0951946A3 (fr) * 1998-03-09 2000-06-14 Daniel Seiler Tunnel de revêtement pour le revêtement par poudrage de pièces plates
FR2795978A1 (fr) 1999-07-06 2001-01-12 Sames Sa Dispositif et procede de nettoyage d'au moins un projecteur dans une installation de projection de produit de revetement pulverulent
WO2002060595A1 (fr) * 2001-01-31 2002-08-08 Nordson Corporation Dispositifs de support et de nettoyage pour des pistolets pulverisant de la poudre
US7172138B2 (en) 2001-01-31 2007-02-06 Nordson Corporation Powder spray gun mount and cleaning arrangements
ITBG20100068A1 (it) * 2010-12-28 2012-06-29 Trasmetal Spa Cabina di verniciatura per impianti di verniciatura di manufatti.
WO2012089787A1 (fr) * 2010-12-28 2012-07-05 Trasmetal S.P.A. Cabine de peinture pour peindre des plantes pour des produits
JP2014519968A (ja) * 2011-05-02 2014-08-21 ノードソン コーポレーション 容器の濃厚相粉体コーティングシステム
CN110420786A (zh) * 2019-07-18 2019-11-08 盐城恒立汽车配件有限公司 一种汽车配件喷涂工装

Also Published As

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

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