MX9202579A - ELECTROSTATIC POWDER COATING USING MULTIPLE SPRAY CURRENT WITH ELECTROSTATIC FIELD AND PULSED SPRAY PATTERNS. - Google Patents

ELECTROSTATIC POWDER COATING USING MULTIPLE SPRAY CURRENT WITH ELECTROSTATIC FIELD AND PULSED SPRAY PATTERNS.

Info

Publication number
MX9202579A
MX9202579A MX9202579A MX9202579A MX9202579A MX 9202579 A MX9202579 A MX 9202579A MX 9202579 A MX9202579 A MX 9202579A MX 9202579 A MX9202579 A MX 9202579A MX 9202579 A MX9202579 A MX 9202579A
Authority
MX
Mexico
Prior art keywords
electrostatic
gun
spray
powder coating
pulsed
Prior art date
Application number
MX9202579A
Other languages
Spanish (es)
Inventor
Ryo Inou
Isao Yabuuchi
Masahumi Matsunaga
Takashi Kahama
Akito Takayanagi
Original Assignee
Nordson Corp
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
Application filed by Nordson Corp filed Critical Nordson Corp
Publication of MX9202579A publication Critical patent/MX9202579A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/007—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means the high voltage supplied to an electrostatic spraying apparatus during spraying operation being periodical or in time, e.g. sinusoidal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
    • B05B5/032—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying for spraying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/047—Discharge apparatus, e.g. electrostatic spray guns using tribo-charging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/10—Arrangements for supplying power, e.g. charging power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0892—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being disposed on a circle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge

Abstract

Una pistola de recubrimiento en polvo electrostática disocia una mezcla de aire y gas presurizada en una pluralidad de corrientes de rociado separadas, electrostáticamente cargadas para lograr un alto grado de deflexión reducida y direcciona. Las partículas en polvo de la mezcla pueden estar electrostáticamente cargadas mientras están dentro de una o más cámaras de la pistola ya sea mediante un campo electrostático CD aplicado o por ficción. Las trayectorias de flujo recorridas por las corrientes de rociado, pueden ser arregladas y/o orientadas de forma que se recubra ventajosamente con el polvo una configuración particular de superficie, tal como el interior de un contenedor. Alternativamente, la carga electrostática de las partículas en polvo pueden ocurrir a través de una pluralidad de electrodos localizados exteriormente, con respecto a la pistola, con al menos un electrodo externo asociado a cada corriente de rociado. Para reducir más la deflexión, la mezcla puede ser pulverizada por la pistola de una manera pulsátil. Adicionalmente, los campos electrostáticos creados mediante los electrodos externos pueden ser pulsados entre una condición de 'apagado' y 'encendido', durante el rociado.An electrostatic powder coating gun dissociates a pressurized gas-air mixture into a plurality of separate, electrostatically charged spray streams to achieve a high degree of reduced deflection and directs. Powder particles in the mix can be electrostatically charged while inside one or more gun chambers either through an applied DC or fictional electrostatic field. The flow paths traveled by the spray streams can be arranged and / or oriented so that a particular surface configuration, such as the interior of a container, is advantageously coated with the powder. Alternatively, electrostatic charging of the powder particles can occur through a plurality of externally located electrodes, relative to the gun, with at least one external electrode associated with each spray stream. To further reduce deflection, the mixture can be sprayed by the gun in a pulsating manner. Additionally, electrostatic fields created by the external electrodes can be pulsed between an 'off' and 'on' condition, during spraying.

MX9202579A 1991-05-29 1992-05-29 ELECTROSTATIC POWDER COATING USING MULTIPLE SPRAY CURRENT WITH ELECTROSTATIC FIELD AND PULSED SPRAY PATTERNS. MX9202579A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP15581991 1991-05-29
JP19709091 1991-07-11

Publications (1)

Publication Number Publication Date
MX9202579A true MX9202579A (en) 1994-01-31

Family

ID=26483729

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9202579A MX9202579A (en) 1991-05-29 1992-05-29 ELECTROSTATIC POWDER COATING USING MULTIPLE SPRAY CURRENT WITH ELECTROSTATIC FIELD AND PULSED SPRAY PATTERNS.

Country Status (5)

Country Link
EP (1) EP0516462A1 (en)
KR (1) KR920021225A (en)
AU (1) AU1725492A (en)
CA (1) CA2070063A1 (en)
MX (1) MX9202579A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2693923A1 (en) * 1992-07-24 1994-01-28 Sames Sa Electrostatic powder projector with air=swept shielded electrodes - uses compressed air flow within suitably shaped electrode shields to prevent powder deposition on electrodes
DE69425023T2 (en) * 1993-05-07 2001-02-22 Nordson Corp Powder coating system and powder coating thickness sensor
GB9624552D0 (en) * 1996-11-27 1997-01-15 Eurotec Surface Coating Syst Improvements in and relating to powder spray guns
DE19749778C1 (en) * 1997-11-11 1999-04-15 Manfred Goettling Connector for powder coating spray head
US6579574B2 (en) * 2001-04-24 2003-06-17 3M Innovative Properties Company Variable electrostatic spray coating apparatus and method
GB0226916D0 (en) * 2002-11-19 2002-12-24 Walker Timothy Improved coating process
GB0421387D0 (en) * 2004-09-25 2004-10-27 Scion Sprays Ltd Pulsed electrostatic atomiser
WO2008150790A1 (en) * 2007-05-29 2008-12-11 Nordson Corporation High density powder coating pump and nozzle for producing a narrow, dense spray pattern
US8783208B2 (en) 2008-12-17 2014-07-22 Nordson Corporation Powder hopper with quiet zone, a combination of a powder hopper and a powder spray gun and a method of operating a powder hopper
US20140057055A1 (en) * 2012-08-23 2014-02-27 Finishing Brands Holdings Inc. System and Method for Using an Electrostatic Tool
KR101657643B1 (en) * 2014-03-14 2016-09-19 주식회사 알란텀 Electrostatic metal porous body forming apparatus and electrostatic metal porous body forming method using the same
JP6321695B2 (en) 2016-02-09 2018-05-09 本田技研工業株式会社 Application nozzle and application device
BR112019020910A2 (en) * 2017-04-04 2020-04-28 Cleanlogix Llc passive co2 composite electrostatic spray applicator
EP3698884A4 (en) * 2017-10-17 2021-05-19 Anest Iwata Corporation Electrostatic spraying device
CN109876938A (en) * 2017-12-06 2019-06-14 天长市金陵电子有限责任公司 A kind of electrostatic powder coating spray gun

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1142527A (en) * 1966-09-08 1969-02-12 Aerocoat Sa Improvements in or relating to apparatus for applying powder coatings to articles
US3767116A (en) * 1972-03-23 1973-10-23 Elektro Ion Nozzle for electrostatic powder spraying apparatus
DE2734174A1 (en) * 1977-07-28 1979-02-08 Siemens Ag Electrostatic powder coating process - using electrical field produced by DC with modulating AC voltage derived from pulse train
DE3330665A1 (en) * 1983-08-25 1985-03-14 Weitmann & Konrad GmbH & Co KG, 7022 Leinfelden-Echterdingen DEVICE FOR DUSTING MOVING OBJECTS, IN PARTICULAR AREA DOCUMENTS

Also Published As

Publication number Publication date
CA2070063A1 (en) 1992-11-30
EP0516462A1 (en) 1992-12-02
KR920021225A (en) 1992-12-18
AU1725492A (en) 1992-12-03

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Legal Events

Date Code Title Description
FA Abandonment or withdrawal