CN102059208B - Static even-color painting method - Google Patents
Static even-color painting method Download PDFInfo
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- CN102059208B CN102059208B CN 201010624556 CN201010624556A CN102059208B CN 102059208 B CN102059208 B CN 102059208B CN 201010624556 CN201010624556 CN 201010624556 CN 201010624556 A CN201010624556 A CN 201010624556A CN 102059208 B CN102059208 B CN 102059208B
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Abstract
The invention discloses a static even-color painting method comprising the following steps of: setting a painting chamber control unit for controlling air speed in a painting chamber; setting a static automatic painting unit for controlling the working state of a static automatic painting gun to ensure that the static automatic painting gun achieves a set painting effect; setting an automatic hanger unit to ensure that workpiece hangers to be painted are reasonably arranged at intervals and the velocity of conveying chains for suspending the hangers are reasonable; and painting workpieces to be painted, hung on the hangers in the painting chamber by using the static automatic painting gun so that paints are attached to the workpieces well by a static effect. The static even-color painting method has the advantages that (1) a paint film has the characteristic of evenness, good leveling property and obviously improved orange-peel phenomenon; (2) the distinctness of image (DOI) and glossiness of the paint film are improved, and a PGD (a unit of the DOI) value can be improved by 0.1-0.3; (3) by adopting static automatic painting, the emission of a volatile organic solvent is effectively reduced to relieve environmental pollution of painting; and (4) the painting efficiency is improved and paint is saved.
Description
Technical field
The present invention relates to the surface lacquer field, be specifically related to a kind of static even-color painting method.
Background technology
In prior art, the technical development of spraying paint is rapid, is widely used at present the electrostatic painting technology, and the quality of static even-color painting method design is most important to the use of product coating quality.If it is improper to design, grasp, even every single device is made well again, the product quality that sprays out also can not be guaranteed.The product surface coating of institute's coating is inhomogeneous, and the static effect of encircling is bad, and the utilization rate of paint only reaches 30%.
Summary of the invention
The invention provides a kind of static even-color painting method, by the enforcement of the method, can improve the surface quality of product spraying, and the utilization rate of paint reaches 70-80%, improve the quality of product, reduced greatly the fraction defective that sprays paint, made the production cost of enterprise reduce.
The technical scheme that the present invention adopts for achieving the above object is:
A kind of static even-color painting method, it comprises the following steps:
(1) paint spray booth's control module is set, is used for controlling the wind speed in this paint spray booth;
(2) a static auto spray painting unit is set, controls the duty of static functional automatic spray gun, make the effect of spraying paint that reaches setting;
(3) an automation hanger unit is set, makes that between workpiece hanger to be sprayed paint, the interval arranges rationally, be used for the outstanding chain speed that connects hanger reasonable;
(4) use the static functional automatic spray gun to carry out spray painting operation to the painting workpieces for the treatment of that is suspended on hanger in this paint spray booth, make coating well attached on workpiece by electrostatic efficiency.
As a further improvement on the present invention, in described step (1), it comprises a wind speed control module and a humidity controlling unit.
As a further improvement on the present invention, in described step (2), it is further comprising the steps of that this please calls the auto spray painting unit:
(21) dc static high voltage unit, when output supply voltage was too low, electrostatic effect and coating absorption variation affected transfer efficiency of coatings; During overtension, easily produce spark discharge.Therefore, in process of production, should note controlling well magnitude of voltage;
(22) atomization air pressure unit, the required compressed air pressure of static automatic spray gun is lower than common spray gun, and too high pressure will affect the shape of coating cloud, affect electrostatic efficiency, air pressure will be adjusted in an appropriate scope in spray painting operation;
(23) coating control module, this coating control module comprise paint viscosity control module and resistance of coating value control module.
As a further improvement on the present invention, in described step (3), it is further comprising the steps of:
(31) rack design unit arranges rational hanger spacing, guarantee the distance of workpiece and spray gun in the method standard, and workpiece lower end height overhead should be less than 1m, and the hanger spacing is 0.8m;
(32) carrier chain design cell, the transfer rate of this carrier chain is reasonable in design, guarantees that surface of the work is enough by the time in coating cloud, makes the coating energy well attached, and chain speed is 2m/min.
As a further improvement on the present invention, the air draft speed of described paint spray booth is to discharge that the solvent vapo(u)r, the coating cloud that produce in the electrostatic painting process splash or the key of solvent evaporates, be 0.5～0.6m/s with this air draft rate setting, this air draft speed can not affect the absorption affinity of coating cloud and the effect of spraying paint less than the speed of general aerial spraying.
As a further improvement on the present invention, prevent that humidity is excessive, thereby at the spray gun for paint surface condensation globule, order produces reverse current to spraying process affects painting effect.
As a further improvement on the present invention, described paint viscosity control module is along with paint viscosity is controlled in the variation of temperature, humidity, effectively improve atomizing effect, make the paint grain encircle deposition along the power line direction better, the coating relative density is 1.15g/cm3, and the coating discharge-amount is 138g/min.
As a further improvement on the present invention, described resistance of coating value control module is controlled at proper range with the resistance of coating value, prevents that electrostatic spraying is lower than aerial spraying with the resistance of coating value, the resistance value of coating should be controlled in standard when application.
Beneficial effect of the present invention is: the inventive method is reasonable in design, enforcement by the method, can improve the surface quality of product spraying, and the utilization rate of paint reaches 70-80%, improved the quality of product, reduced greatly the fraction defective that sprays paint, made the production cost of enterprise reduce, it has following characteristics:
(1) paint film is even, good leveling property, and the tangerine peel phenomenon is obviously improved.
(2) improve clarity and the glossiness of paint film, PGD (aquatic foods degree of reflecting) value can improve 0.1～0.3.
(3) adopt the static automatic coating, effectively reduce the discharge capacity of volatile organic solvent, alleviated the application public hazards.
(4) improve transfer efficiency of coatings, save coating.Owing to adopting the high-voltage electrophoresis coatings method, vehicle frame, fuel tank are suspended on the carrier chain of ground connection (positive pole), the discharge electrode of flush coater leads to negative pole, thereby forms very high electrostatic field between coated article and discharge electrode, makes the coating after atomizing have the good effect of encircling under the effect of electric field force.
The specific embodiment
Embodiment: a kind of static even-color painting method of the present invention, it comprises the following steps:
(1) paint spray booth's control module is set, is used for controlling the wind speed in this paint spray booth;
(2) a static auto spray painting unit is set, controls the duty of static functional automatic spray gun, make the effect of spraying paint that reaches setting;
(3) an automation hanger unit is set, makes that between workpiece hanger to be sprayed paint, the interval arranges rationally, be used for the outstanding chain speed that connects hanger reasonable;
(4) use the static functional automatic spray gun to carry out spray painting operation to the painting workpieces for the treatment of that is suspended on hanger in this paint spray booth, make coating well attached on workpiece by electrostatic efficiency.
In described step (1), it comprises a wind speed control module and a humidity controlling unit.
In described step (2), it is further comprising the steps of that this please calls the auto spray painting unit:
(21) dc static high voltage unit, when output supply voltage was too low, electrostatic effect and coating absorption variation affected transfer efficiency of coatings; During overtension, easily produce spark discharge.Therefore, in process of production, should note controlling well magnitude of voltage;
(22) atomization air pressure unit, the required compressed air pressure of static automatic spray gun is lower than common spray gun, and too high pressure will affect the shape of coating cloud, affect electrostatic efficiency, air pressure will be adjusted in an appropriate scope in spray painting operation;
(23) coating control module, this coating control module comprise paint viscosity control module and resistance of coating value control module.
In described step (3), it is further comprising the steps of:
(31) rack design unit arranges rational hanger spacing, guarantee the distance of workpiece and spray gun in the method standard, and workpiece lower end height overhead should be less than 1m, and the hanger spacing is 0.8m;
(32) carrier chain design cell, the transfer rate of this carrier chain is reasonable in design, guarantees that surface of the work is enough by the time in coating cloud, makes the coating energy well attached, and chain speed is 2m/min.
The air draft speed of described paint spray booth is to discharge that the solvent vapo(u)r, the coating cloud that produce in the electrostatic painting process splash or the key of solvent evaporates, be 0.5～0.6m/s with this air draft rate setting, this air draft speed can not affect the absorption affinity of coating cloud and the effect of spraying paint less than the speed of general aerial spraying.
Prevent that humidity is excessive, thereby at the spray gun for paint surface condensation globule, order produces reverse current to spraying process affects painting effect.
Described paint viscosity control module along with paint viscosity is controlled in the variation of temperature, humidity, improves atomizing effect effectively, makes the paint grain encircle deposition along the power line direction better, and the coating relative density is 1.15g/cm3, and the coating discharge-amount is 138g/min.
Described resistance of coating value control module is controlled at proper range with the resistance of coating value, prevents that electrostatic spraying is lower than aerial spraying with the resistance of coating value, the resistance value of coating should be controlled in standard when application.
During the work of static automatic spray gun, by allowing oil pump partly connect power cathode, workpiece connects positive source and ground connection, under the action of high voltage of high voltage source, just forms an electrostatic field between the end of spray gun and workpiece.The suffered electric field force of paint particles in oil pump is directly proportional to the voltage of electrostatic field and the carried charge of paint particles, and and the distance between spray gun and workpiece be inversely proportional to, when voltage is enough high, near zone formation air ionization district, spray gun end, air is ionization and heating intensely, form a bolarious haloing around making spray gun end sharp edge or utmost point pin, can obviously see in the dark, at this moment air produces strong corona discharge.Coating sprays after nozzle atomization, and is charged because of contact during the electrode needle edge of the paint particles that is atomized by muzzle, when the gas ionization zone that produces through corona discharge, will increase again its surface charge density.Under the electrostatic field of the paint particles that these are electronegative, the surface of the work of guide polarity motion, and be deposited over to form on surface of the work and film uniformly.
As described in the embodiment of the present invention, with same or analogous other static even-color painting methods of the present invention, all in protection domain of the present invention.
Claims (8)
1. a static even-color painting method, is characterized in that, it comprises the following steps:
(1) paint spray booth's control module is set, is used for controlling the wind speed in this paint spray booth;
(2) a static auto spray painting unit is set, controls the duty of static functional automatic spray gun, make the effect of spraying paint that reaches setting;
(3) an automation hanger unit is set, makes that between workpiece hanger to be sprayed paint, the interval arranges rationally, be used for the outstanding chain speed that connects hanger reasonable;
(4) use the static functional automatic spray gun to carry out spray painting operation to the painting workpieces for the treatment of that is suspended on hanger in this paint spray booth, make coating well attached on workpiece by electrostatic efficiency.
2. static even-color painting method according to claim 1, is characterized in that, in described step (1), it comprises a wind speed control module and a humidity controlling unit.
3. static even-color painting method according to claim 1, is characterized in that, in described step (2), this static auto spray painting unit also comprises:
(21) dc static high voltage unit, when output supply voltage was too low, electrostatic effect and coating absorption variation affected transfer efficiency of coatings; During overtension, easily produce spark discharge, therefore, in process of production, should note controlling well magnitude of voltage;
(22) atomization air pressure unit, the required compressed air pressure of static functional automatic spray gun is lower than common spray gun, and too high pressure will affect the shape of coating cloud, affect electrostatic efficiency, air pressure will be adjusted in an appropriate scope in spray painting operation;
(23) coating control module, this coating control module comprise paint viscosity control module and resistance of coating value control module.
4. static even-color painting method according to claim 1, is characterized in that, the automation hanger unit in described step (3), and it also comprises:
(31) rack design unit arranges rational hanger spacing, guarantee the distance of workpiece and spray gun for paint in the method standard, and workpiece lower end height overhead should be less than 1m, and the hanger spacing is 0.8m;
(32) carrier chain design cell, the transfer rate of this carrier chain is reasonable in design, guarantees that surface of the work is enough by the time in coating cloud, makes the coating energy well attached, and chain speed is 2m/min.
5. static even-color painting method according to claim 2, it is characterized in that, the air draft speed of described paint spray booth is the key of discharging the solvent of the solvent vapo(u)r, the coating cloud that splashes or the volatilization that produce in the electrostatic painting process, be 0.5～0.6m/s with this air draft rate setting, this air draft speed can not affect the absorption affinity of coating cloud and the effect of spraying paint less than the speed of aerial spraying.
6. static even-color painting method according to claim 2, is characterized in that, prevents that humidity is excessive, thereby at the spray gun for paint surface condensation globule, order produces reverse current to spraying process affects painting effect.
7. static even-color painting method according to claim 3, is characterized in that, described paint viscosity control module, along with paint viscosity is controlled in the variation of temperature, humidity, effectively improve atomizing effect, make the paint grain encircle deposition along the power line direction better, the coating relative density is 1.15g/cm
3, the coating discharge-amount is 138g/min.
8. static even-color painting method according to claim 3, it is characterized in that, described resistance of coating value control module is controlled at proper range with the resistance of coating value, prevent electrostatic spraying with the resistance of coating value than aerial spraying low with coating, the resistance value of coating should be controlled in standard when application.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010624556 CN102059208B (en) | 2010-12-31 | 2010-12-31 | Static even-color painting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010624556 CN102059208B (en) | 2010-12-31 | 2010-12-31 | Static even-color painting method |
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| Publication Number | Publication Date |
|---|---|
| CN102059208A CN102059208A (en) | 2011-05-18 |
| CN102059208B true CN102059208B (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010624556 Expired - Fee Related CN102059208B (en) | 2010-12-31 | 2010-12-31 | Static even-color painting method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103889591A (en) * | 2011-11-04 | 2014-06-25 | 旭硝子株式会社 | Method for producing article with low reflection film |
| CN103801499B (en) * | 2014-01-22 | 2016-07-06 | 广东冠辉科技有限公司 | A kind of multistation polychrome hardware products spraying method and equipment thereof |
| CN109225715A (en) * | 2017-05-19 | 2019-01-18 | 湖南中集竹木业发展有限公司 | A kind of plate spraying equipment and spraying method |
| CN109277219A (en) * | 2018-11-26 | 2019-01-29 | 内蒙古易暖科技有限公司 | A kind of spray equipment for furnace body of warming oneself |
| CN114011671A (en) * | 2021-11-08 | 2022-02-08 | 贵州航天精工制造有限公司 | Ultrasonic-assisted method for dip-coating dry film lubricant |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5565244A (en) * | 1986-09-25 | 1996-10-15 | Mazda Motor Corporation | Coating method in coating line and coating apparatus therefor |
| CN101893878A (en) * | 2010-05-19 | 2010-11-24 | 东莞市冠辉五金有限公司 | Process control-based environmentally-friendly automatic spraying production line and spraying control system |
| CN201659048U (en) * | 2010-04-23 | 2010-12-01 | 大庆井泰机械制造有限公司 | Multi-gun multi-angle sector jet spray coating machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0716535A (en) * | 1993-06-30 | 1995-01-20 | Nissan Motor Co Ltd | Painting method |
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2010
- 2010-12-31 CN CN 201010624556 patent/CN102059208B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5565244A (en) * | 1986-09-25 | 1996-10-15 | Mazda Motor Corporation | Coating method in coating line and coating apparatus therefor |
| CN201659048U (en) * | 2010-04-23 | 2010-12-01 | 大庆井泰机械制造有限公司 | Multi-gun multi-angle sector jet spray coating machine |
| CN101893878A (en) * | 2010-05-19 | 2010-11-24 | 东莞市冠辉五金有限公司 | Process control-based environmentally-friendly automatic spraying production line and spraying control system |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平7-16535A 1995.01.20 |
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| CN102059208A (en) | 2011-05-18 |
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| CB02 | Change of applicant information |
Address after: 523877, Guangdong, Dongguan province Changan town side village Fourth Industrial Zone Crown Fai hardware Co., Ltd. Applicant after: DONGGUAN GUANHUI HARDWARE CO., LTD. Address before: 523877, Guangdong, Dongguan province Changan town side village Fourth Industrial Zone Crown Fai hardware Co., Ltd. Applicant before: Dongguan Guanhui Hardware Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: DONGGUAN GUANHUI HARDWARE CO., LTD. TO: GUANGDONG GUANHUI TECHNOLOGY CO., LTD. |
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Granted publication date: 20130605 Termination date: 20161231 |