EP1084761A2 - Farbauftragsvorrichtung- und Verfahren - Google Patents
Farbauftragsvorrichtung- und Verfahren Download PDFInfo
- Publication number
- EP1084761A2 EP1084761A2 EP00119846A EP00119846A EP1084761A2 EP 1084761 A2 EP1084761 A2 EP 1084761A2 EP 00119846 A EP00119846 A EP 00119846A EP 00119846 A EP00119846 A EP 00119846A EP 1084761 A2 EP1084761 A2 EP 1084761A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- paint
- positively
- negatively charged
- painter
- 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.)
- Withdrawn
Links
- 238000010422 painting Methods 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 16
- 230000003068 static effect Effects 0.000 claims abstract description 60
- 239000003973 paint Substances 0.000 claims abstract description 39
- 230000005611 electricity Effects 0.000 claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 27
- 230000007935 neutral effect Effects 0.000 claims abstract description 20
- 230000000717 retained effect Effects 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 150000002500 ions Chemical class 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000002923 metal particle Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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
- 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
- B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/2489—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
- B05B7/2491—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives
-
- 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
- B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
Definitions
- the invention relates to a painter and a method of painting, and more particularly to a painter and a method of painting in both of which static electricity is removed from air, and then, the air is mixed with a paint.
- static electricity is generated by friction between different materials.
- static electricity is already generated when a body of an automobile is puttied for pretreatment of painting.
- static electricity is further accumulated in various polishing steps.
- a bumper one of parts of an automobile, is composed of insulating material such as plastic, when a polishing step is applied to a bumper, the bumper is completely electrically charged after the polishing step has been finished.
- a metallic-color paint contains a lot of quite small metal particles. Since those metal particles are electrically conductive, if static electricity is accumulated on a body of an automobile, the metal particles are attracted to the static electricity. As a result, there is generated non-uniformity in painting on a body of an automobile.
- an object such as an automobile is painted by spraying a mixture of a paint and air thereto through a spray gun.
- air sprayed through a spray gun is generally electrically charged.
- air is electrically charged before sprayed through a spray gun, because of friction between air and an inner surface of the air tube. Since electrically charged air attracts ambient dusts, such dusts are resultingly adhered to an object to be painted with a paint.
- the apparatus is comprised of a filter 1 which removed moisture and oil from compressed air, a paint tank 2 filled with a paint, a gun 3 spraying a mixture of a paint and air, a high pressure hose 4 making fluid communication between the filter 1 and the gun 3, and a shield cable 5.
- the filter 1, the high pressure hose 4 and the shield cable 5 are arranged in a box 10.
- a leakage transformer 6 as illustrated in Fig. 2 is also arranged in the box 10.
- the leakage transformer 6 can raise a voltage supplied from a generally used AC power source up to about 7000 volts.
- the leakage transformer 6 includes a 10M ⁇ -resistor 7, three capacitors 8, and three discharge needles 9 each electrically connected to each of the capacitors 8, at its high voltage terminal.
- the discharge needles 9 are radially arranged in an outlet of the gun 3, and are arranged in facing relation to the high pressure hose 4 (not illustrated in Fig. 2).
- the shield cable 5 includes a high-voltage terminal line and an earth terminal line, and extends from the gun 3 to the leakage transformer 6 arranged in the box 10.
- the earth terminal line is electrically connected to a fixed terminal 12 through an earth line 11.
- Static electricity accumulated on an object to be painted is neutralized with the ionized air. At the same time, dusts having been adhered to the object are blown out.
- the above-mentioned apparatus is accompanied with a problem that since air sprayed through the gun 3 has been already electrically charged when sprayed, the air attracts ambient dusts before reaching an object to be painted, resulting in that those dusts are adhered to the object.
- Japanese Utility Model Publication No. 3013762 has suggested an apparatus for removing static electricity, comprising a high voltage source, a tube in which ions are generated, a discharge needle arranged in the tube, opposing electrodes arranged in the tube, a high pressure tube for introducing compressed air into the tube, a gun through which a paint and air are sprayed, and a pressure control valve arranged in the gun.
- the high voltage source has two output terminals one of which is electrically connected to the discharge needle, and the other is electrically connected to the opposing electrodes.
- Japanese Unexamined Patent Publication No. 7-296985 has suggested an apparatus for vaporizing electrically conductive liquid.
- the apparatus is comprised of an electrically insulating container containing electrically conductive liquid therein, and a high voltage source.
- the electrically conductive liquid is vaporized, and at the same time, ionized while the high voltage source applies a high voltage to the electrically conductive liquid.
- Japanese Unexamined Patent Publication No. 11-109069 has suggested an electronic device comprising a main case formed with a transparent window through which a person can see what is contained in the main case.
- the main case and the window are both composed of the same transparent resin.
- the main case is coated with a colored underlying coating and a transparent coating on the colored underlying coating, and the window is coated with the transparent coating.
- Japanese Unexamined Patent Publication No. 7-18412 has suggested a method of treating a surface of a work, including the steps of spraying ionized gas to a surface of a work to thereby remove static electricity from the surface, radiating ultra-violet ray to the surface of the work to thereby clean the surface, and forming a thin film on the surface.
- the present invention intends to overcome the above problems.
- the object is solved by the painter according to independent claim 1 and the method of painting according to independent claim 5.
- the present invention generally relates to a painter and a method for painting. In particular it relates to a painter and a method of painting in which static electricity is removed. More specifically, the present invention also relates to a painter and a method for painting in which neutralized air is mixed with paint.
- a painter including (a) a static eraser which removes static electricity from air, (b) a tank containing a paint therein, and (c) a spray gun which mixes the paint with air supplied from the static eraser, and sprays the paint to an object, characterized by (d) a device located between the static eraser and the spray gun which device retains air therein, wherein positively or negatively charged ionized air supplied from the static eraser is retained in the device, positively charged ionized air is mixed with negatively charged ionized air in the device, and electrically neutral air is supplied from the device to the spray gun.
- the inventors of the present invention had found out that it is more effective to spray electrically neutral air than to spray positively or negatively charged ionized air, as done in the conventional apparatus illustrated in Figs. 2 and 3, in order to prevent non-uniformity in painting. If air is electrically neutral, the air will not attract dusts thereto when sprayed to an object to be painted.
- the present invention is based on this discovery.
- the positively or negatively charged ionized air supplied from the static eraser is being accumulated in the device such as a tank, the positively charged air is combined with the negatively charged air, resulting in that air becomes electrically neutral.
- the thus made electrically neutral air is sprayed through the spray gun together with a paint, ensuring non-uniformity in painting an object.
- the device has a volume at least ten times greater than a volume of air discharged from the static eraser in a unit period of time.
- the device had a too small volume, it would not be possible to facilitate positively and negatively charged ionized air supplied from the static eraser, to combine with each other.
- the inventors had conducted the experiment to know how much volume the device had to have.
- the device it was found out that if the device had a volume ten times greater than a volume of air to be discharged from the static eraser in a unit period of time, it was possible to facilitate the positively and negatively charged ionized air to combine with each other.
- the device may be comprised of a tank for retaining air therein.
- the device may be comprised of a hose such as a high pressure tube.
- the positively charged air is combined with the negatively charged air, resulting in that air becomes electrically neutral.
- the thus made electrically neutral air is sprayed through the spray gun together with a paint, ensuring non-uniformity in painting an object.
- the positively and negatively charged ionized air is retained in a tank in the step (b).
- the positively and negatively charged ionized air may be retained in a tube in the step (b).
- the positively charged air supplied from the static eraser is being accumulated in the device such as a tank or a hose
- the positively charged air is combined with the negatively charged air, resulting in that the air becomes electrically neutral.
- the thus made electrically neutral air is sprayed through the spray gun together with a paint, ensuring non-uniformity in painting an object.
- Fig. 3 illustrates a painter in accordance with the embodiment of the present invention.
- a painter 20 in accordance with the embodiment is comprised of a static eraser 21 which removed static electricity from air, a paint tank 22 filled with a paint, a spray gun 23 in which air supplied from the static eraser 21 is mixed with a paint supplied from the paint tank 22, and which sprays the mixture of the air and paint, and a tank 24 located between the static eraser 21 and the spray gun 23 for retaining air therein.
- the static eraser 21 in the embodiment may be comprised of the static eraser illustrated in Figs. 1 and 2.
- the static eraser 21 is not to be limited to that. Any apparatus which can remove static electricity may be used as the static eraser 21 in the embodiment.
- the tank 24 has a volume ten times greater than a volume of air discharged from the static eraser 21 in a unit period of time.
- the painter 20 in accordance with the embodiment operates as follows.
- Positively and negatively charged ionized air 25 supplied from the static eraser 21 is once retained in the tank 24.
- the positively and negatively charged ionized air are combined with each other in the tank 24, resulting in that the air 25 is turned into electrically neutral ions 26.
- the thus made electrically neutral ions 26 are fed to the spray gun 23, and sprayed to an object through the spray gun 23 together with a paint supplied from the paint tank 22.
- the positively or negatively charged ionized air 25 supplied from the static eraser 21 can be turned into the electrically neutral ions 26 by once retaining the charged ionized air 25 in the tank 24.
- the spray gun 23 By spraying the electrically neutral air 26 through the spray gun 23 together with a paint, it is possible to paint an object without non-uniformity in painting.
- the device for retaining air therein is not to be limited to the tank 24. Any means can be used as the device, if the means had such a volume as to be able to combine positively and negatively charged ionized air supplied from the static eraser 21, to each other to thereby render the air electrically neutral.
- a high pressure hose may be used in place of the tank 24, as the device for retaining air therein.
Landscapes
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Elimination Of Static Electricity (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Coating Apparatus (AREA)
- Nozzles (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26312499A JP2001079465A (ja) | 1999-09-17 | 1999-09-17 | 塗装装置及び塗装方法 |
JP26312499 | 1999-09-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1084761A2 true EP1084761A2 (de) | 2001-03-21 |
EP1084761A3 EP1084761A3 (de) | 2003-08-13 |
Family
ID=17385164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00119846A Withdrawn EP1084761A3 (de) | 1999-09-17 | 2000-09-12 | Farbauftragsvorrichtung- und Verfahren |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1084761A3 (de) |
JP (1) | JP2001079465A (de) |
KR (1) | KR20010050480A (de) |
CN (1) | CN1288784A (de) |
CA (1) | CA2319628A1 (de) |
SG (1) | SG97936A1 (de) |
TW (1) | TW473401B (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1320285A1 (de) * | 2001-12-11 | 2003-06-18 | Girolamo Barbieri | Verfahren und Vorrichtung zum Neutralisieren elektrostatischer Aufladungen an geladenen Teilen |
EP1867392A2 (de) * | 2006-06-13 | 2007-12-19 | APO GmbH Massenkleinteilbeschichtung | Verfahren und Vorrichtung zur Oberflächenbeschichtung von Kleintellen |
EP2486984A3 (de) * | 2011-02-11 | 2013-11-27 | Thomas Mayer | Verfahren zur Aufbereitung von Druckluft sowie Vorrichtung zur Aufbereitung von Druckluft |
ITVI20120271A1 (it) * | 2012-10-16 | 2014-04-17 | Claudio Bettanin | Impianto per la verniciatura a spruzzo |
CN104368476A (zh) * | 2014-11-10 | 2015-02-25 | 苏州特铭精密科技有限公司 | 一种uv漆喷涂生产线及其生产方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7086549B2 (en) | 2004-01-16 | 2006-08-08 | Illinois Tool Works Inc. | Fluid supply assembly |
US7665672B2 (en) | 2004-01-16 | 2010-02-23 | Illinois Tool Works Inc. | Antistatic paint cup |
US7165732B2 (en) | 2004-01-16 | 2007-01-23 | Illinois Tool Works Inc. | Adapter assembly for a fluid supply assembly |
US7766250B2 (en) | 2004-06-01 | 2010-08-03 | Illinois Tool Works Inc. | Antistatic paint cup |
US7757972B2 (en) | 2004-06-03 | 2010-07-20 | Illinois Tool Works Inc. | Conversion adapter for a fluid supply assembly |
US7353964B2 (en) | 2004-06-10 | 2008-04-08 | Illinois Tool Works Inc. | Fluid supply assembly |
CN103551268A (zh) * | 2013-11-01 | 2014-02-05 | 杨义华 | 圆柱体喷漆机 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH039802A (ja) | 1989-06-07 | 1991-01-17 | Hakamada Seisakusho:Kk | 円板カッターの基板の構造 |
JPH0313762A (ja) | 1989-06-09 | 1991-01-22 | Toshiba Corp | 空気調和機 |
JPH0718412A (ja) | 1993-07-06 | 1995-01-20 | Alpine Electron Inc | 表面処理方法および表面処理装置 |
JPH11109069A (ja) | 1997-09-30 | 1999-04-23 | Nec Saitama Ltd | 電子機器 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3786309A (en) * | 1973-01-12 | 1974-01-15 | Gen Motors Corp | Electrostatic powder spraying method and apparatus |
DE3631270A1 (de) * | 1986-09-13 | 1988-03-24 | Kopperschmidt Mueller & Co | Vorrichtung zur spruehbeschichtung von werkstuecken |
US5032422A (en) * | 1989-12-26 | 1991-07-16 | Ball Corporation | Electrostatically depositing and electrostatically neutralizing |
EP0934776A1 (de) * | 1998-02-06 | 1999-08-11 | AEA Technology plc | Sprühpistole mit gleichzeitiger Kontrolle des Fluid- und Luftventils |
-
1999
- 1999-09-17 JP JP26312499A patent/JP2001079465A/ja active Pending
-
2000
- 2000-09-12 EP EP00119846A patent/EP1084761A3/de not_active Withdrawn
- 2000-09-14 SG SG200005208A patent/SG97936A1/en unknown
- 2000-09-14 CA CA002319628A patent/CA2319628A1/en not_active Abandoned
- 2000-09-15 KR KR1020000054302A patent/KR20010050480A/ko not_active Application Discontinuation
- 2000-09-15 CN CN00128752A patent/CN1288784A/zh active Pending
- 2000-09-15 TW TW089119086A patent/TW473401B/zh active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH039802A (ja) | 1989-06-07 | 1991-01-17 | Hakamada Seisakusho:Kk | 円板カッターの基板の構造 |
JPH0313762A (ja) | 1989-06-09 | 1991-01-22 | Toshiba Corp | 空気調和機 |
JPH0718412A (ja) | 1993-07-06 | 1995-01-20 | Alpine Electron Inc | 表面処理方法および表面処理装置 |
JPH11109069A (ja) | 1997-09-30 | 1999-04-23 | Nec Saitama Ltd | 電子機器 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1320285A1 (de) * | 2001-12-11 | 2003-06-18 | Girolamo Barbieri | Verfahren und Vorrichtung zum Neutralisieren elektrostatischer Aufladungen an geladenen Teilen |
EP1867392A2 (de) * | 2006-06-13 | 2007-12-19 | APO GmbH Massenkleinteilbeschichtung | Verfahren und Vorrichtung zur Oberflächenbeschichtung von Kleintellen |
EP1867392A3 (de) * | 2006-06-13 | 2008-02-20 | APO GmbH Massenkleinteilbeschichtung | Verfahren und Vorrichtung zur Oberflächenbeschichtung von Kleinteilen |
EP2486984A3 (de) * | 2011-02-11 | 2013-11-27 | Thomas Mayer | Verfahren zur Aufbereitung von Druckluft sowie Vorrichtung zur Aufbereitung von Druckluft |
DE102011011054B4 (de) | 2011-02-11 | 2023-01-26 | Thomas Mayer | Verfahren zur Aufbereitung von Druckluft sowie Vorrichtung zur Aufbereitung von Druckluft |
ITVI20120271A1 (it) * | 2012-10-16 | 2014-04-17 | Claudio Bettanin | Impianto per la verniciatura a spruzzo |
CN104368476A (zh) * | 2014-11-10 | 2015-02-25 | 苏州特铭精密科技有限公司 | 一种uv漆喷涂生产线及其生产方法 |
CN104368476B (zh) * | 2014-11-10 | 2017-03-22 | 苏州特铭精密科技有限公司 | 一种uv漆喷涂生产线及其生产方法 |
Also Published As
Publication number | Publication date |
---|---|
SG97936A1 (en) | 2003-08-20 |
TW473401B (en) | 2002-01-21 |
JP2001079465A (ja) | 2001-03-27 |
EP1084761A3 (de) | 2003-08-13 |
CA2319628A1 (en) | 2001-03-17 |
KR20010050480A (ko) | 2001-06-15 |
CN1288784A (zh) | 2001-03-28 |
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