CN100482354C - Coating system of car shell with dynamic coater - Google Patents
Coating system of car shell with dynamic coater Download PDFInfo
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- CN100482354C CN100482354C CNB2004100523000A CN200410052300A CN100482354C CN 100482354 C CN100482354 C CN 100482354C CN B2004100523000 A CNB2004100523000 A CN B2004100523000A CN 200410052300 A CN200410052300 A CN 200410052300A CN 100482354 C CN100482354 C CN 100482354C
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Abstract
A coating system with dynamic coating unit for the shell of car is composed of precoating region, electroplating region, basic layer coating region, bottom layer coating region having a priming paint coating station equipped with automatic electrostatic spraying rotary cup, transparent paint coating region consisting of the first and the second transparent paint layers coating stations and flash chamber, drying station, and dynamic coating unit consisting of components supplying source, pump color exchanging unit, pipeline, stirrer and automatic electrostatic spraying rotary cup.
Description
Technical field
The present invention relates to a kind of finishing system, especially a kind of automobile case finishing system with dynamic painting device, many automatically electrostatic spray of this system employs revolve cup and spray on automobile case.
Background technology
Automobile need carry out multiple coating could realize graceful beautiful outward appearance.Coating comprises basic unit, bottom and skin.These coatings can make automobile case and external environment is isolated, corrosion, can protect car body simultaneously.Present vehicle coating process be at different application stations respectively with paint coating to shell, on different premix paint supply source, each application station, connect one or many automatically electrostatic spray and revolve cup.Shortcoming of this cover technology is: need large-area place hold each application station, and load different automatically electrostatic spray and revolve cup, this certainly will cause the fund input of equipment and factory building bigger, the comparatively loaded down with trivial details and trouble of operation simultaneously.
In the conventional finishing system, automatically electrostatic spray revolves cup and all is connected usually on the paint supply guard system or similar loop of many volumes above 1000 liters, and each loop provides the dominant hue pigment of single premix.
In these systems,, be approximately 2000 liters because the volume of each the medium-and-large-sized fluid reservoir in paint supply loop and the circulatory system is limited; So pigment or the number of colours selected for use are restricted, the automaker can only be automobile selection six or seven kind of color of a kind of model usually.In case a certain color is unpopular, manufacturer will cause waste to increase cost owing to not re-using this color.To clear up simultaneously and handle also suitable trouble and time-consuming of clean system.In addition, the pigment that is pre-mixed in the stirring coating loop that need not stop or make its circulation to prevent sedimentation.But circulation can influence the texture of coating for a long time, as for the coating that much contains the metal scale, after circulating for a long time, these scale particle surfaces will be twisted or destroy, thereby have changed the characteristic of hybrid pigment or shielded the performance that deposits coating.
Summary of the invention
The quantity that the present invention can reduce the application station and automatically electrostatic spray revolves cup on traditional vehicle coating process, provides a cover advanced finishing system.This finishing system has an enormous advantage: the automaker again needn't rely on increases the pigment fluid reservoir so that increase cost, obtains how selectable color.
Finishing system of the present invention comprises precoating zone, plating area, application base layer region, application bottom zone, transparent paint coating area, dry station and dynamic painting device; Wherein application bottom zone comprises a primer painting station, and this application station is equipped with two automatically electrostatic spray and revolves cup, can spray composite bottom layer to shell; Transparent paint coating area is made up of a ground floor paint coating station, a cover flash chamber and a second layer paint coating station, is used for spraying on bottom clear dope; Dynamically painting device comprises three cover application component sources of supply, three pumps, colour changing device, application pipeline, an agitator, automatically electrostatic spray revolve cup, can dynamically mix and sprays on the shell multiple independent component.
Finishing system of the present invention is applicable to the automobile case of coating metal (comprising ferrous material and non-ferrous material), polymer (comprising thermosets and thermoplastic) and composite.Effect is better during materials such as automobile case employing cold-rolled steel, galvanized steel, aluminium and magnesium.
Details are as follows for automobile case finishing system of the present invention:
The precoating zone can be cleaned the precipitation of case surface, degreasing and Coating Pretreatment, and in the plating area, the part of metal shell can use one or more electroplating coating components to carry out electroplating processes.Better electroplating coating comprises anion or cation electroplating coating material, comprises epoxy resin and polyurethanes coating etc.
The shell of precoating will clean, heats and cool off, and is coated with in the application base layer region then and loads onto ground floor, after the intact ground floor of application, also will clean, dries, cools off, polishing and seal operation.The ground floor application can be liquid state, suspended nitride, powder etc., spraying method liquid and suspended nitride has dipping lacquer, directly roll-type application, oppositely roll-type application, shields application etc. on the shell; Powdery paints generally adopts plating.
At application bottom zone coating prime lacquer, this zone comprises a primer painting station to shell by the rapid coating process of multistep, and the primer painting station can spray composite bottom layer to shell.The primer painting station comprises that an automatically electrostatic spray revolves cup, and automatically electrostatic spray revolves on a glass cover first application component source of supply that is connected first clear dope, is used for spraying a kind of water-based coating material that does not contain dominant hue pigment; The another automatically electrostatic spray revolves on a glass cover second application component source of supply that can be connected second clear dope, can spray a kind of water-based coating material that comprises dominant hue pigment.
Dominant hue pigment is meant a kind of coating that the multicolour variation effect can be provided, and the multicolour variation effect is meant the coating that shows significant colour or black under visual angle change.
To be requirement be colored through the shell of application to specific multicolour effect under direct-view, and present dead color under 60～80 ° of visual angles, first-selected from intuitively to the vicissitudinous material of view color is arranged.Typical dominant hue pigment comprises mica sheet, aluminium flake, bronze flake, blooming mica, nickel sheet, tin sheet, silver strip, copper sheet and their mixture.Do not contain dominant hue pigment, the content that refers generally to dominant hue pigment in the material is lower than 3% of coating gross weight.
In this cover finishing system, automatically electrostatic spray revolves cup and revolves a glass conduit by automatically electrostatic spray and extract first coating material, and in agitator, dynamically mix, flow into automatically electrostatic spray by one or more injection channels again and revolve cup, and be sprayed on the shell, formed first bottom that does not contain dominant hue pigment.
After spraying first bottom, the burr of first bottom can be removed in the primer painting station, and carries out drying or part drying by the air heat on the shell.First component in the first application component source of supply stops to flow simultaneously, and second component in the second application component source of supply begins to flow and stir; Formed the dominant hue pigment that comprises second subbing in the agitator.Automatically electrostatic spray revolves cup and by one or more injection channels second subbing is injected on first bottom, and the shell after the spraying is at the primer painting station and was approximately for 10～180 seconds in the ambient atmosphere, can form multicoloured, the composite bottom layer of one deck.
Primer base can at least two independently component dynamically mix, and spray on the shell.Dynamically mixing is meant to mix or stir at least two components and revolves cup to form a kind of material and to flow to automatically electrostatic spray.
The first application component source of supply and the second application component source of supply are arranged in the dynamic painting device of a cover of this finishing system.This painting device comprises the combination of application component source of supply, and for example the first application component source of supply, the second application component source of supply, the 3rd application component source of supply, three pumps, a cover colour changing device, application pipeline, automatically electrostatic spray revolve a glass conduit, agitator, automatically electrostatic spray and revolve cup; Wherein each supply source all is connected to an automatically electrostatic spray through separately application pipeline and revolves on glass conduit.Can select for use a pump fixing or position changeable by automatically electrostatic spray revolve a glass conduit, the application pipeline is carried one or more selected components, automatically electrostatic spray revolves an agitator is set on glass conduit, the downstream of agitator is provided with an automatically electrostatic spray and revolves cup, and the colour changing device can be controlled the flow of the various application components that come from the first application component source of supply, the second application component source of supply and the 3rd application component source of supply.
After the spraying bottom, shell need carry out drying or curing in a conventional drying station, and dry bottom is wanted the clear coat of sprayed protection subsequently, and the degree of drying of bottom can have influence on the quality of clear coat.If contain too many moisture in the bottom, steam passes clear coat from bottom in the dry clear coat of subsequent handling, and then defectives such as clear coat will crack, bubble, explosion.
Dry station comprises the drying oven or the infrared radiation baking oven of a routine.Bottom on the shell in the transparent paint coating area that comprises two paint coating station, can spray clear dope on bottom after drying is carried out at the drying station.Ground floor paint coating station and second layer paint coating station be provided with respectively two automatically electrostatic spray revolve the cup be connected on clear dope source of supply and the clear dope source of supply, spraying clear dope material is to form clear coat on the bottom of drying respectively, and the clear dope material in clear dope source of supply and the clear dope source of supply can be the same or different.
Flash chamber is arranged between ground floor paint coating station and the second layer paint coating station.After the ground floor paint coating station had sprayed first clear coat, shell entered flash chamber, by flow velocity, temperature, the humidity of controlling air in the flash chamber and then the evaporation capacity of controlling first bottom of deposition, constituted first clear coat with appropriate water content; Can enter second layer paint coating station spraying second layer clear dope under conditions of similarity fast, forming one does not have sagging phenomenon and in fact smooth, the uniform horizontal thin film of thickness.
The translational speed of shell in flash chamber depends on the length and the structure of flash chamber, and the duration of shell in flash chamber was approximately for 10～180 seconds, can send into air in the flash chamber by air blast.
Curing can be undertaken by the dry technology of a routine, carries out the dry or use infrared ray heating of hot-air convection as using the hot-air convection baking oven.
On the other hand, if bottom does not solidify before the liquid transparent coating material of spraying, bottom and liquid transparent coating material should carry out hot-air convection and infrared ray by the equipment that uses routine and heat respectively and solidify.In order to solidify bottom and liquid transparent coating material, shell should be heated to temperature usually and be approximately 120 ℃～150 ℃ and lasting 20～40 minutes.
The thickness of dry composite coating is generally 12～125 microns.In fact before solidifying at the drying station, dry station can the dry composite bottom, and transparent paint coating area is used to carry out clear-coated.
Compare with the finishing system of routine, finishing system of the present invention can improve the flexibility of color and bigger solids package.Dynamically mixed process can provide a big palette by using less relatively mixing benchmark color or metal mixed color to solid color and metal color.
The present invention provides method and apparatus for spray-on coating, uses many automatically electrostatic spray to revolve the dominant hue pigment that cup spraying on automobile case comprises composite primer.
Description of drawings
Fig. 1 is the flowage structure figure of automobile case finishing system of the present invention.
Wherein: 1, precoating zone, 2, the plating area, 3, the application base layer region, 4, application bottom zone,
5, precoating zone, 6, automatically electrostatic spray revolves cup, 7, the first application component source of supply,
8, automatically electrostatic spray revolves cup, 9, the second application component source of supply,
10, the 3rd application component source of supply, 11, automatically electrostatic spray revolves a glass conduit,
12, application pipeline, 13, pump, 14, agitator, 15, automatically electrostatic spray revolves cup,
16, colour changing device, 17, dry station, 18, transparent paint coating area,
19, ground floor paint coating station, 20, second layer paint coating station,
21, automatically electrostatic spray revolves cup, 22A～B, clear dope source of supply, and 23, flash chamber,
24, dry station, 25, air blast, 26, (automobile) shell
The specific embodiment
Embodiment:
The description of embodiments of the invention can be with reference to figure 1.
The precipitation on 1 pair of shell 26 surface, precoating zone is cleaned, after degreasing and the Coating Pretreatment, in plating area 2, the part of metal shell 26 can use anion electroplating coating material component to carry out electroplating processes.
The shell 26 of precoating cleans, heats and cools off, and is coated with in application base layer region 3 then and loads onto ground floor, after the intact ground floor of application, cleans, dries, cools off, polishing and seal operation.Use the method for direct roll-type application, can on shell 26, spray suspended nitride.
As shown in Figure 1, at application bottom zone 4 coating prime lacquers, this zone comprises a primer painting station 5 to shell 26 by the rapid coating process of multistep, and this application station 5 can be to shell 26 spraying composite bottom layers.An automatically electrostatic spray at primer painting station 5 revolve the cup 6 be connected first clear dope one the cover the first application component source of supply 7 on, be used for spraying a kind of water-based coating material that does not contain dominant hue pigment; The another automatically electrostatic spray revolve the cup 8 can be connected second clear dope one the cover the second application component source of supply 9 on, can spray a kind of water-based coating material that comprises dominant hue pigment.
In this example, automatically electrostatic spray revolves cup 6 and revolves glass conduit 11 extractions first coating material by automatically electrostatic spray, and in agitator 14, dynamically mix, flow into automatically electrostatic spray by an injection channel again and revolve cup 15, and be sprayed on the shell 26, formed first bottom that does not contain dominant hue pigment.
After spraying first bottom, the burr of first bottom can be removed in primer painting station 5, and carries out drying by the air heat on the shell 26.First component in the first application component source of supply 7 stops to flow simultaneously, and second component in the second application component source of supply 9 begins to flow and stir; Formed the dominant hue pigment that comprises second subbing in the agitator 14.Automatically electrostatic spray revolves cup 8 and by an injection channel second subbing is injected on first bottom, and the shell after the spraying is in about 120 seconds in the ambient atmosphere at primer painting station 5, can form multicoloured, the composite bottom layer of one deck.Primer base can to two independently component dynamically mix, spray on the shell 26.
The first application component source of supply 7 and the second application component source of supply 9 are arranged in the dynamic painting device of a cover of this finishing system.This painting device comprises: the first application component source of supply 7, the second application component source of supply 9, the 3rd application component source of supply 10, three pumps 13, a cover colour changing device 16, application pipeline 12, automatically electrostatic spray revolve glass conduit 11, agitator 14, automatically electrostatic spray and revolve cup 15, and wherein each supply source all is connected to an automatically electrostatic spray through separately application pipeline 12 and revolves on glass conduit 11.Can select for use a fixed pump 13 to revolve glass conduit 11, a kind of selected component of application pipeline 12 conveyings by automatically electrostatic spray, automatically electrostatic spray revolves an agitator 14 is set on glass conduit 11, the downstream of agitator 14 is provided with an automatically electrostatic spray and revolves cup 15, and colour changing device 16 can be controlled the flow of the various application components that come from the first application component source of supply 7, the second application component source of supply 9 and the 3rd application component source of supply 10.
After the spraying bottom, shell 26 carries out drying, curing for 17 li at the drying station of a routine, and dry bottom is wanted the clear coat of sprayed protection subsequently, and the degree of drying of bottom can have influence on the quality of clear coat.
The baking oven of bottom on the shell 26 in drying station 17 carries out after the drying, in the transparent paint coating area 18 that comprises two paint coating station, can spray clear dope on bottom.Ground floor paint coating station 19 and second layer paint coating station 20 are provided with two automatically electrostatic spray respectively and revolve cup and 21 be connected on clear dope source of supply 22A and the clear dope source of supply 22B, respectively on the bottom of drying spraying clear dope material to form clear coat.
Ground floor paint coating station 19 has sprayed after first clear coat, shell 26 enters flash chamber 23, the evaporation capacity of first bottom that can deposit by flow velocity, temperature, humidity and then the control of air in the control flash chamber 23, constitute first clear coat with appropriate water content, and enter second layer paint coating station 20 spraying second layer clear dopes fast, forming one does not have sagging phenomenon and in fact smooth, the uniform horizontal thin film of thickness.
The translational speed of shell 26 in flash chamber 23 depends on the length and the structure of flash chamber 23, the duration of shell 26 in flash chamber 23 was 100 seconds in this example, can send into air in the flash chamber 23 by air blast 25, the flow velocity of the circulating air of coating surface is 0.2m/s, air heat to 20 ℃, relative humidity is 60%.
Curing can be carried out the dry or use infrared ray heating of hot-air convection by using the hot-air convection baking oven.If bottom does not solidify before the liquid transparent coating material of spraying, bottom and liquid transparent coating material can heat respectively by hot-air convection and infrared ray and solidify.In order to solidify bottom and liquid transparent coating material, shell 26 should be heated to 130 ℃ and lasting 25 minutes usually.
The thickness of dry composite coating is 120 microns, and before solidifying at drying station 24, dry station 17 can the dry composite bottom, and transparent paint coating area 18 can be carried out clear-coated.
Claims (4)
1, a kind of automobile case finishing system with dynamic painting device comprises precoating zone (1), plating area (2), application base layer region (3), application bottom zone (4), transparent paint coating area (18), dry station (17,24) and dynamic painting device; It is characterized in that: application bottom zone comprises a primer painting station (5), this application station (5) is equipped with two automatically electrostatic spray and revolves cup (6,8), wherein automatically electrostatic spray revolves on a cover first application component source of supply (7) that cup (6) is connected first clear dope, the another automatically electrostatic spray revolve the cup (8) be connected second clear dope one the cover the second application component source of supply (9) on, can spray composite bottom layer to shell; Described transparent paint coating area (18) is used for spraying clear dope on bottom; Dynamically painting device comprises three cover application component sources of supply (7,9,10), three pumps (13), colour changing device (16), application pipeline (12), automatically electrostatic spray revolves a glass conduit (11), an agitator (14), an automatically electrostatic spray revolves cup (15), each source of supply all is connected to an automatically electrostatic spray through separately application pipeline and revolves on glass conduit, select for use a fixed pump to revolve a glass conduit by automatically electrostatic spray, the application pipeline is carried a kind of selected component, automatically electrostatic spray revolves an agitator (14) is set on glass conduit (11), the downstream of agitator (14) is provided with an automatically electrostatic spray and revolves cup, colour changing device control is from the flow of the various application components of application component source of supply, can dynamically mix and sprays on the shell (26) multiple independent component.
2, automobile case finishing system as claimed in claim 1 is characterized in that: described transparent paint coating area (18) comprises a ground floor paint coating station (19), a cover flash chamber (23) and a second layer paint coating station (20).
3, automobile case finishing system as claimed in claim 2, it is characterized in that: described ground floor paint coating station (19) comprises that two automatically electrostatic spray revolve cup (22A), and described second layer paint coating station (20) comprises that two automatically electrostatic spray revolve cup (22B).
4, automobile case finishing system as claimed in claim 1 is characterized in that: in the described application bottom zone (4), first bottom that is sprayed on the automobile case (26) is not contain dominant hue pigment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100523000A CN100482354C (en) | 2004-11-22 | 2004-11-22 | Coating system of car shell with dynamic coater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100523000A CN100482354C (en) | 2004-11-22 | 2004-11-22 | Coating system of car shell with dynamic coater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1778475A CN1778475A (en) | 2006-05-31 |
| CN100482354C true CN100482354C (en) | 2009-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100523000A Expired - Fee Related CN100482354C (en) | 2004-11-22 | 2004-11-22 | Coating system of car shell with dynamic coater |
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|---|---|
| CN (1) | CN100482354C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214923A (en) * | 2014-06-25 | 2016-01-06 | 浙江九川竹木股份有限公司 | A kind of bamboo wood products electrostatic painting process |
-
2004
- 2004-11-22 CN CNB2004100523000A patent/CN100482354C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 广州标致汽车涂装工艺. 黎明.涂料工业，第4期. 1990 |
| 广州标致汽车涂装工艺. 黎明.涂料工业，第4期. 1990 * |
| 我国汽车车身涂装15年来的技术进步及其展望. 王锡春.涂料工业，第4期. 2000 |
| 我国汽车车身涂装15年来的技术进步及其展望. 王锡春.涂料工业，第4期. 2000 * |
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| Publication number | Publication date |
|---|---|
| CN1778475A (en) | 2006-05-31 |
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Granted publication date: 20090429 Termination date: 20161122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |