CN111842059A - Car body color register spraying method - Google Patents
Car body color register spraying method Download PDFInfo
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- CN111842059A CN111842059A CN202010516818.4A CN202010516818A CN111842059A CN 111842059 A CN111842059 A CN 111842059A CN 202010516818 A CN202010516818 A CN 202010516818A CN 111842059 A CN111842059 A CN 111842059A
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- color
- main body
- area
- vehicle body
- body color
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- 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
- B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
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- 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
- B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
- B05D1/322—Removable films used as masks
- B05D1/325—Masking layer made of peelable film
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a car body chromatography spraying method, which comprises the following steps: spraying main body color finish paint on a main body color area and a non-main body color area of the vehicle body to be subjected to color register spraying; the main body color area and the non-main body color area are arranged adjacently, and the position of the main body area close to the non-main body color area has an uneven structure; determining a color separation line between a main body color area and a non-main body color area of the vehicle body; shielding the surface of the vehicle body: arranging a shielding piece attached to the surface of the uneven structure on the surface of the uneven structure, arranging color separation shielding belts on the edge of the main body color area close to the non-main body color area and along the color separation lines, and arranging shielding films on the rest positions of the main body color area; and spraying non-main body color finish paint on the non-main body color area. The color separation device can realize accurate color separation when the car body is subjected to color register spraying.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a car body color register spraying method.
Background
The car body chromatography spraying of the car is to spray different paint colors on different parts of the car body, so that the appearance of the car body is more colorful. At present, the process method for the color register spraying of the automobile body generally comprises the following steps: firstly, spraying a first color on the vehicle body, after the paint of the first color is dried, covering the part of the vehicle body which does not need to be sprayed with a second color by using a shielding film, and then spraying the second color on the rest parts of the vehicle body which need to be sprayed with the second color.
The inventor finds that the prior art method for the chromatic coating process of the vehicle body has the following technical defects in the process of implementing the invention: when two parts of the vehicle body, which need to be painted with different paint colors, are adjacent and the position of one part close to the other part has an uneven structure, when the part is shielded by a shielding film, the phenomenon of improper shielding is easily caused, so that the problem of inaccurate color separation occurs when the vehicle body is painted in a color register way.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a method for color separation painting of a vehicle body, which can achieve precise color separation when the vehicle body is color-separated.
In order to achieve the above object, an embodiment of the present invention provides a car body color register painting method, including:
spraying main body color finish paint on a main body color area and a non-main body color area of the vehicle body to be subjected to color register spraying; the main body color area and the non-main body color area are arranged adjacently, and the position of the main body area close to the non-main body color area has an uneven structure;
determining a color separation line between a main body color area and a non-main body color area of the vehicle body;
shielding the surface of the vehicle body: arranging a shielding piece attached to the surface of the uneven structure on the surface of the uneven structure, arranging a color separation shielding belt on the edge of the main body color area close to the non-main body color area and along the color separation line, and arranging a shielding film on the rest positions of the main body color area;
and spraying non-main body color finish paint on the non-main body color area.
As an improvement of the above, after the spraying of the non-host body color finish to the non-host body color region, the method further includes:
removing the masking arrangement from the surface of the vehicle body;
Flashing off the finish paint sprayed on the surface of the car body;
spraying varnish on the surface of the vehicle body integrally;
and drying the surface of the vehicle body.
As an improvement of the above, the masking of the surface of the vehicle body is performed before the non-main body color finish is flashed off.
As an improvement of the above scheme, before the main body color area and the non-main body color area of the vehicle body to be color-registered sprayed are both sprayed with the main body color finish paint, the method further includes:
and spraying intermediate paint on the vehicle body subjected to the preliminary treatment.
As an improvement of the scheme, the width of the color separation masking tape is 6-10 mm.
As an improvement of the above scheme, when a shielding film is arranged at the rest position of the main body color area, the shielding film and the color separation shielding belt have overlapped areas.
As a modification of the above, the width of the overlapped region of the shielding film and the color separation shielding belt is 1-5 mm.
As an improvement of the above scheme, the uneven structure is a convex structure or a concave structure.
As an improvement of the scheme, the vehicle body is a vehicle front cover.
As an improvement of the scheme, the color separation masking tape is a color separation adhesive tape, and the masking piece is a high-temperature-resistant die-cut piece.
Compared with the prior art, the car body color register spraying method provided by the embodiment of the invention comprises the steps of firstly spraying the main car body color finish paint on the main car body color area and the non-main car body color area of the car body to be subjected to color register spraying; then, determining a color separation line between a main body color area and a non-main body color area of the vehicle body; then, the vehicle body surface is shielded: arranging a shielding piece attached to the surface of the uneven structure on the surface of the main body color area, arranging a color separation shielding belt on the edge of the main body color area close to the non-main body color area and along the color separation line, and arranging a shielding film on the rest positions of the main body color area; and finally, spraying non-main body color finish paint on the non-main body color area. Therefore, according to the embodiment of the invention, the color separation line between the main body color area and the non-main body color area of the main body is determined firstly, then the color separation shielding belt is accurately set along the color separation line, and the shielding part attached to the surface of the uneven structure is arranged on the surface of the uneven structure of the main body color area, so that the accurate positioning of the color separation line can be realized, and the accurate color separation can be realized in the subsequent color register spray coating.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a process flow diagram of a method for color register painting of a vehicle body according to an embodiment of the present invention;
FIG. 2 illustrates a determined split line between the register areas of the vehicle body;
FIG. 3 is a schematic view of a vehicle body shading arrangement according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a prior art car body color register paint coat;
FIG. 5 is a schematic structural view of a body paint color register coating according to an embodiment of the present invention.
Reference is made to the accompanying drawings in which: 1. a main body color zone; 2. a non-main body color region; 3. a color separation line; 4. an uneven structure; 5. a color separation masking tape; 6. a shield; 10. an electrophoretic layer; 11. a primer layer; 12. a main body color paint layer; 13. a first varnish layer; 14. a colored paint layer of a non-main body color; 15. and a second varnish layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a car body color register painting method, which includes:
and S10, spraying main body color finish paint on the main body color area 1 and the non-main body color area 2 of the vehicle body to be subjected to color register spraying.
Wherein, main automobile body colour is regional 1 with the regional 2 adjacent settings of main automobile body colour of non-, just the regional being close to of main automobile body the regional 2 position of non-main automobile body colour has uneven structure 4 (consequently should how go to shield this uneven structure 4's surface to the in-process that the chromatography was carried out to the automobile body and target in place, is the very critical point that influences the automobile body colour separation accuracy, especially when this uneven structure 4's surface shape ratio is more complicated, and stretches into when main automobile body colour is regional 1). In addition, the main body color finish paint may be a main color for representing a vehicle body, may also be other types of colors for representing the vehicle body, and the like, and is not particularly limited herein. In addition, the area of the main body color region 1 may be larger than the area of any one of the non-main body color regions 2, may be equal to the area of the non-main body color region 2, or may be smaller than the area of the non-main body color region 2, and is not particularly limited herein.
S11, a color separation line 3 between the main body color region 1 and the non-main body color region 2 of the vehicle body is determined.
After the vehicle body is sprayed with the main body color finish paint, the main body color area 1 is sprayed with the main body color finish paint, and at the moment, the non-main body color area 2 needs to be sprayed with the non-main body color finish paint. Before that, referring to fig. 2, it is necessary to determine a color separation line 3 between a main body color region 1 and a non-main body color region 2 of a vehicle body.
S12, referring to fig. 3, the vehicle body surface is shielded: a shielding piece 6 attached to the surface of the uneven structure 4 is arranged on the surface of the uneven structure 4, a color separation shielding belt 5 is arranged on the edge, close to the non-main body color area 2, of the main body color area 1 and along the color separation line 3, and a shielding film is arranged on the rest positions of the main body color area 1.
By arranging a shielding piece 6 which is attached to the surface of the uneven structure 4 on the surface of the uneven structure 4, the surface of the uneven structure 4 can be shielded in place. Even if the surface shape of the uneven structure 4 is relatively complex (in the prior art, a single shielding film is used for shielding relevant parts of a vehicle body, and the shielding film is too large, the edge of the shielding film is difficult to accurately match a color separation line 3 with a complex shape in the shielding process), or the uneven structure extends into the main body color area 1, the surface of the uneven structure 4 can be shielded in place, so that the color separation line 3 can be accurately positioned between the surface of the uneven structure 4 and the non-main body color area 2. Further, by providing the separation masking band 5 on the edge of the main body color area 1 close to the non-main body color area 2 and along the separation line 3, it is possible to accurately position the separation line 3 at the remaining positions of both the main body color area 1 and the non-main body color area 2 (i.e., at the remaining positions of both except the uneven structure 4). In addition, the shielding film is arranged at the rest positions of the main body color area 1, so that the whole main body color area 1 is shielded while the color separation lines 3 of the main body color area 1 and the non-main body color area 2 are accurately positioned, and the subsequent influence on the body color of the main body color area 1 in the finish paint spraying process of the non-main body color area 2 is avoided.
It should be noted that, when the shielding member 6 attached to the surface of the uneven structure 4 is disposed on the surface of the uneven structure 4, the position of the uneven structure 4 close to the non-main body color area 2 may be used as a precise attachment, and it is not necessary to attach and cover the entire surface of the uneven structure 4 through the shielding member 6, and the surface of the uneven structure 4 not attached and covered by the shielding member 6 may be subsequently shielded and covered by the shielding film. Of course, the surface of the uneven structure 4 may also be entirely covered by the covering 6 in a snug manner.
And S13, spraying non-main body color finish paint on the non-main body color area 2.
From the above analysis, the car body chromatic coating method provided by the embodiment of the invention determines the color separation line 3 between the main car body color area 1 and the non-main car body color area 2 of the car body, then accurately sets the color separation masking band 5 along the color separation line 3, and sets the masking piece 6 attached to the surface of the uneven structure 4 on the surface of the uneven structure 4 of the main car body color area 1, so that the accurate positioning of the color separation line 3 can be realized, and the accurate color separation can be realized during the subsequent chromatic coating.
In the foregoing embodiment process, further, after the spraying of the non-main body color finish paint on the non-main body color area 2, the method further includes:
s14, removing the masking arrangement on the surface of the vehicle body (i.e. removing the masking member 6, the color separation masking tape 5, and the masking film);
s15, carrying out flash drying on the finish paint sprayed on the surface of the car body;
s16, spraying varnish on the entire surface of the vehicle body (i.e., including the main body color region 1 and the non-main body color region 2);
and S17, drying the surface of the vehicle body.
At present, in the prior art, after finishing spraying the finish paint on the non-main body color area 2, the varnish is directly sprayed on the area, and then the area is dried. Referring to fig. 4, a relatively obvious difference of the paint step surface appears between the color separation lines 3 of the two areas of the non-main body color area 2 and the main body color area 1, so that the color register painting effect and the color display effect of the vehicle body are affected.
In this embodiment, the shielding arrangement on the surface of the vehicle body is removed firstly, then the finish paint sprayed on the surface of the vehicle body is flash-dried, then the varnish is sprayed on the whole surface of the vehicle body, and finally the surface of the vehicle body is dried, please refer to fig. 5, so that the obvious paint step surface difference between the color separation lines 3 of the two areas of the non-main vehicle body color area 2 and the main vehicle body color area 1 can be avoided, and the color register spraying effect and the vehicle body color presenting effect of the vehicle body can be improved.
It is understood that the finish paint sprayed on the surface of the vehicle body can be flash-dried first and then be flash-dried.
In the embodiment, the ratio of the thickness of the clear coat layer formed after the vehicle body is sprayed with the clear coat in the step S16 to the thickness of the layer of the non-main body color finish paint is 5: 1-3: 1. Specifically, the thickness of varnish layer is 40 ~ 60um, the layer thickness of non-main automobile body color finish is 10-20um, the layer thickness of main automobile body color finish is 10-20 um.
Further, the masking setting of the surface of the body is performed before the non-main body color finish flashes.
At present, after finish paint is sprayed on a vehicle body, the masking film is removed after the finish paint is flashed off. The inventor finds out through intensive research that: in the scheme of the invention, when the non-main body finish is dried by flash, the shielding part and the color separation shielding belt are torn off (the existing vehicle paint spraying process generally does not have the step of removing the shielding part or the step of removing the color separation shielding belt), and because the non-main body finish is already condensed in a block shape after being dried by flash, the defects that the vehicle body finish is jagged and the like easily occur near the color separation line in the process of tearing off the shielding part and the color separation shielding belt. And the embodiment proposes through innovativeness: before the non-main body color finish paint flashes, the shielding arrangement on the surface of the vehicle body is removed, so that the non-main body color finish paint is still in a wet film state and is not condensed, and the defect that the vehicle body finish paint is saw-toothed at the color separation line is not easy to occur when the shielding arrangement is torn off; if these defects occur, since the non-main body color topcoat has not yet coagulated at this time, it is also possible to take remedial action for these defects, for example, by causing the topcoat to be accurately redistributed to the color separation line by means of a scraper or the like.
In the above embodiment, further, before the main body color area 1 and the non-main body color area 2 of the vehicle body, which are to be color-registered and painted, are painted with the main body color finish, the method further includes:
and spraying intermediate paint on the vehicle body subjected to the preliminary treatment.
For example, the pretreatment may include a step of performing pretreatment on the vehicle body, such as electrophoresis of the vehicle body + intermediate coating of the vehicle body.
By way of example, referring to fig. 5, after the final paint is applied to the vehicle body (e.g., the hood), the resulting paint coating is sequentially: the paint comprises an electrophoretic layer 10, a primer layer 11, a main body color paint layer 12, a first clear paint layer 13, a non-main body color paint layer 14 and a second clear paint layer 15.
In the above embodiment, the width of the dichroic masking band 5 is, for example, 6-10mm (for example, may be 8mm), so that effective masking coverage of the edge of the main body color region 1 close to the non-main body color region 2 can be realized.
In the above embodiment, further, when a shielding film is provided in the remaining position of the main body color area 1, the shielding film and the dichroic shielding band 5 both have an area of coincidence, so that effective shielding of the main body color area 1 can be more effectively achieved.
In the above embodiment, the width of the overlapping region of the masking film and the dichroic masking strip 5 is 1-5mm (for example, 4mm may be used).
In the above embodiment, the uneven structure 4 is exemplarily a convex structure or a concave structure, but may also be a structure having both a convex structure and a concave structure, wherein, when the shielding member 6 is manufactured, the structural shape of the shielding member 6 may be matched with the structural shape of the uneven structure 4, so that the shielding member 6 can better achieve the fitting shielding of the surface of the uneven structure 4.
In the above embodiment, the vehicle body is, for example, a vehicle front cover. Of course, the vehicle body may also be a rear cover, a left side vehicle body or a right side vehicle body, and the like, and is not particularly limited herein.
In the above embodiment, the color separation masking tape 5 is a color separation tape, so that the color separation tape can be firmly adhered to the surface of the vehicle body, and the color separation line 3 is prevented from being inaccurate due to masking displacement. Furthermore, the shielding element 6 is, for example, a high-temperature-resistant die-cut piece (formed by cutting with a knife die), so that the surface of the uneven structure 4 can be better covered during the process of color register painting of the vehicle body.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A car body chromatography spraying method is characterized by comprising the following steps:
spraying main body color finish paint on a main body color area and a non-main body color area of the vehicle body to be subjected to color register spraying; the main body color area and the non-main body color area are arranged adjacently, and the position of the main body area close to the non-main body color area has an uneven structure;
determining a color separation line between a main body color area and a non-main body color area of the vehicle body;
shielding the surface of the vehicle body: arranging a shielding piece attached to the surface of the uneven structure on the surface of the uneven structure, arranging color separation shielding belts on the edge of the main body color area close to the non-main body color area and along the color separation lines, and arranging shielding films on the rest positions of the main body color area;
And spraying non-main body color finish paint on the non-main body color area.
2. The method of color register coating of claim 1, wherein after said coating of the non-host body color region with a non-host body color topcoat, the method further comprises:
removing the masking arrangement from the surface of the vehicle body;
flashing off the finish paint sprayed on the surface of the car body;
spraying varnish on the surface of the vehicle body integrally;
and drying the surface of the vehicle body.
3. The process of color register coating of claim 1, wherein said masking of said surface of said vehicle body is performed before said non-main body color finish flashes.
4. The method of color register coating of a vehicle body according to claim 1, wherein before the step of coating both the body color area and the non-body color area of the vehicle body to be color register coated with the body color topcoat, the method further comprises:
and spraying intermediate paint on the vehicle body subjected to the preliminary treatment.
5. The process of car body chromatography painting according to claim 1, wherein the width of the color separation masking tape is 6-10 mm.
6. The process of car body chromatography painting according to claim 1, wherein when a masking film is provided in the rest of the main car body color area, both the masking film and the dichroic masking band have an area of coincidence.
7. The process for car body topping spray according to claim 6, wherein the width of the overlapping area of the masking film and the dichroic masking tape is 1 to 5 mm.
8. The process for color register coating of a vehicle body according to claim 1, wherein the uneven structure is a convex structure or a concave structure.
9. The process for color-registering a vehicle body according to claim 1, characterized in that said vehicle body is a vehicle front cover.
10. The process of claim 1, wherein the color separation masking tape is a color separation tape and the masking member is a high temperature resistant die cut sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010516818.4A CN111842059A (en) | 2020-06-08 | 2020-06-08 | Car body color register spraying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010516818.4A CN111842059A (en) | 2020-06-08 | 2020-06-08 | Car body color register spraying method |
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| CN111842059A true CN111842059A (en) | 2020-10-30 |
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| CN202010516818.4A Pending CN111842059A (en) | 2020-06-08 | 2020-06-08 | Car body color register spraying method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028533A (en) * | 2012-09-04 | 2013-04-10 | 济南吉利汽车有限公司 | Automobile surface paint chromatic spraying method |
| CN107303550A (en) * | 2016-04-21 | 2017-10-31 | 比亚迪股份有限公司 | The chromatography spraying coating process of body of a motor car |
| CN109877014A (en) * | 2019-03-06 | 2019-06-14 | 浙江吉利汽车研究院有限公司 | A kind of coating chromatography technique |
| CN110252626A (en) * | 2019-06-05 | 2019-09-20 | 北京现代汽车有限公司 | Spraying method for the spraying of chromatography vehicle |
| CN210045513U (en) * | 2019-05-31 | 2020-02-11 | 曲永辉 | A regional color separation line location frock for car chromatography application |
-
2020
- 2020-06-08 CN CN202010516818.4A patent/CN111842059A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028533A (en) * | 2012-09-04 | 2013-04-10 | 济南吉利汽车有限公司 | Automobile surface paint chromatic spraying method |
| CN107303550A (en) * | 2016-04-21 | 2017-10-31 | 比亚迪股份有限公司 | The chromatography spraying coating process of body of a motor car |
| CN109877014A (en) * | 2019-03-06 | 2019-06-14 | 浙江吉利汽车研究院有限公司 | A kind of coating chromatography technique |
| CN210045513U (en) * | 2019-05-31 | 2020-02-11 | 曲永辉 | A regional color separation line location frock for car chromatography application |
| CN110252626A (en) * | 2019-06-05 | 2019-09-20 | 北京现代汽车有限公司 | Spraying method for the spraying of chromatography vehicle |
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