CN114939521A - Vehicle body paint spraying process, vehicle paint structure and vehicle - Google Patents
Vehicle body paint spraying process, vehicle paint structure and vehicle Download PDFInfo
- Publication number
- CN114939521A CN114939521A CN202210496081.3A CN202210496081A CN114939521A CN 114939521 A CN114939521 A CN 114939521A CN 202210496081 A CN202210496081 A CN 202210496081A CN 114939521 A CN114939521 A CN 114939521A
- Authority
- CN
- China
- Prior art keywords
- vehicle body
- paint
- spraying
- layer
- drying
- 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.)
- Pending
Links
- 239000003973 paint Substances 0.000 title claims abstract description 279
- 238000005507 spraying Methods 0.000 title claims abstract description 123
- 238000000034 method Methods 0.000 title claims abstract description 70
- 239000010410 layer Substances 0.000 claims abstract description 136
- 238000001035 drying Methods 0.000 claims abstract description 78
- 239000011248 coating agent Substances 0.000 claims abstract description 41
- 238000000576 coating method Methods 0.000 claims abstract description 41
- 239000002966 varnish Substances 0.000 claims abstract description 34
- 239000011247 coating layer Substances 0.000 claims abstract description 5
- 238000001962 electrophoresis Methods 0.000 claims description 32
- 230000007547 defect Effects 0.000 claims description 15
- 238000005498 polishing Methods 0.000 claims description 13
- 238000007591 painting process Methods 0.000 claims description 7
- 230000010485 coping Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 22
- 238000010422 painting Methods 0.000 description 14
- 239000007921 spray Substances 0.000 description 9
- 230000000873 masking effect Effects 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
Images
Classifications
-
- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
-
- 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
-
- 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
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
-
- 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
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
- B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/007—After-treatment
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/587—No clear coat specified some layers being coated "wet-on-wet", the others not
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a vehicle body paint spraying process, a vehicle paint structure and a vehicle body, wherein the vehicle body paint spraying process comprises the steps of carrying out middle coating spraying on the vehicle body and carrying out first color paint spraying on the vehicle body; drying the vehicle body for the first time to form a middle coating completely covering the vehicle body and a first colored paint layer partially covering the middle coating; performing second color paint spraying and varnish spraying on the part of the middle coating layer which is not shielded by the first color paint layer and the first color paint layer; and drying the vehicle body for the second time to form a second colored paint layer partially covering the middle coating and the first colored paint layer and a clear paint layer completely covering the first colored paint layer and the second colored paint layer. According to the technical scheme, after the intermediate coat is sprayed, the local first color paint is sprayed immediately, and the two kinds of sprayed paint are dried together; and (4) after drying, spraying the second color paint, simultaneously spraying varnish on the two color paints, and simultaneously baking and curing. And a plurality of working procedures are saved, the production process is simplified, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of vehicle production processes, in particular to a vehicle body paint spraying process, a vehicle paint structure and a vehicle.
Background
In the existing vehicle production, the double-color spraying technology is realized based on the re-spraying performance of acrylic acid/polyurethane system paint, namely, the color paint and the varnish can be sprayed on the baked and cured varnish layer again. However, in the prior art, if the intermediate coat is finished, the clear coat is applied and cured after the first finish coat is applied to the vehicle body, and if the clear coat is cured, the second color finish coat is applied to the vehicle body again, and the clear coat is applied again and cured again. The process flow is complicated, and the production efficiency is low.
Disclosure of Invention
The invention mainly aims to provide a vehicle body paint spraying process, a vehicle paint structure and a vehicle body, and aims to solve the technical problems of complex paint spraying process and low production efficiency in the prior art.
In order to achieve the above object, the present invention provides a vehicle body paint spraying process,
the vehicle body paint spraying process comprises the following steps:
carrying out intermediate coating spraying on the vehicle body, and carrying out first color paint spraying on the vehicle body;
drying the vehicle body for the first time to form a middle coating completely covering the vehicle body and a first colored paint layer partially covering the middle coating;
performing second color paint spraying and varnish spraying on the part of the middle coating layer which is not shielded by the first color paint layer and the first color paint layer;
and drying the vehicle body for the second time to form a part covering the middle coating and a second colored paint layer on the first colored paint layer, and form a layer covering the first colored paint layer and a clear paint layer on the second colored paint layer completely.
Optionally, the step of performing intermediate paint spraying on the vehicle body and performing first paint spraying on the vehicle body comprises:
carrying out intermediate coating spraying on the vehicle body;
the first paint spray is applied to the vehicle body when the midcoat paint is not allowed to dry.
Optionally, the step of drying the vehicle body for the first time includes:
leveling the paint vehicle to be subjected to the middle coating spraying and the first color paint spraying;
and continuously drying the leveled paint at the drying temperature of 140-150 ℃ for 20-30 min.
Optionally, before the step of spraying the second color paint on the vehicle body, the method further comprises:
attaching shielding films to a first preset position and a second preset position of the vehicle body;
after the step of spraying the second color paint on the vehicle body, the method further comprises the following steps:
removing the shielding film at the first preset position;
after the step of drying the automobile body for the second time, the method further comprises the following steps of:
and removing the shielding film at the second preset position.
Optionally, before the step of forming the intermediate coating by performing intermediate coating spraying on the vehicle body, the method further comprises:
carrying out electrophoresis treatment on the vehicle body;
and drying the electrophoresis-treated vehicle body to form an electrophoresis layer on the vehicle body.
Optionally, the step of drying the electrophoresis-treated vehicle body includes:
and continuously drying the electrophoresis-treated car body for 15-25 min at the drying temperature of 165-175 ℃.
Optionally, after the step of drying the vehicle body for the first time, the method further includes:
and polishing the car body.
Optionally, after the step of drying the vehicle body for the second time, the method further includes:
detecting whether the vehicle body has defects;
and when the defect is detected on the vehicle body, carrying out coping and polishing treatment on the position with the defect on the vehicle body.
In addition, in order to solve the above problems, the present invention further provides a vehicle paint structure, which is manufactured by the vehicle body paint spraying process, and includes a middle coating, a first colored paint layer, a second colored paint layer, and a clear paint layer, wherein the first colored paint layer completely covers the middle coating, the second colored paint layer partially covers the first colored paint layer, and the clear paint layer covers the first colored paint layer and the second colored paint layer.
In addition, in order to solve the problems, the invention further provides a vehicle body, wherein the vehicle body is provided with the vehicle paint structure, and the intermediate coating in the vehicle paint structure completely covers the vehicle body.
According to the technical scheme, the first color paint is sprayed immediately after the intermediate coat is sprayed, and the two kinds of sprayed paint are dried together; and (4) after drying, spraying the second color paint, simultaneously spraying varnish on the two color paints, and simultaneously baking and curing. And a plurality of working procedures are omitted, the production process is simplified, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a first embodiment of the vehicle body paint spraying process of the present invention;
FIG. 2 is a schematic flow chart of a second embodiment of the vehicle body spray process of the present invention;
FIG. 3 is a schematic flow chart of a third embodiment of the vehicle body spray process of the present invention;
FIG. 4 is a schematic flow chart of a fourth embodiment of the vehicle body paint spraying process of the present invention;
FIG. 5 is a schematic structural view of the vehicle paint structure of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
20 | First |
| 30 | Second |
40 | |
| 50 | Electrophoretic layer |
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a vehicle body paint spraying process, and please refer to fig. 1, wherein fig. 1 is a schematic flow chart of a first embodiment of the vehicle body paint spraying process, and the vehicle body paint spraying process comprises the following steps:
step S10: carrying out intermediate coating spraying on the vehicle body, and carrying out first color paint spraying on the vehicle body;
step S20: carrying out first drying on the vehicle body to form a middle coating completely covering the vehicle body and a first colored paint layer partially covering the middle coating;
step S30: performing second color paint spraying and varnish spraying on the part of the middle coating layer which is not shielded by the first color paint layer and the first color paint layer;
step S40: and drying the vehicle body for the second time to form a part covering the middle coating and a second colored paint layer on the first colored paint layer, and form a layer covering the first colored paint layer and a clear paint layer on the second colored paint layer completely.
In this embodiment, full-automatic spraying can be realized by adopting a robot, or the vehicle body can be sprayed by adopting a manual spraying mode. When the robot is adopted for automatic spraying, a plurality of robots can be adopted for spraying the automobile body, so that the production efficiency is further improved. In the present embodiment, a mode of automatic robot spraying will be described as an example. Firstly, performing intermediate coat spraying on the vehicle body by using an intermediate coat paint through a robot, immediately performing the first-color paint spraying on the vehicle body by using a first-color paint after the intermediate coat spraying is finished, sending the vehicle body into a drying chamber after the first-color paint spraying is finished, drying the intermediate coat sprayed paint and the first-color paint sprayed paint, forming the intermediate coat 10 on the vehicle body by using the dried intermediate coat sprayed paint, and forming the first-color paint layer 20 on the vehicle body by using the first-color paint sprayed paint.
After the first drying is completed, that is, after the step S20, the method further includes the step S50: and polishing the car body. In the actual application process, under the influence of factors such as process means and environment, the dried first colored paint layer 20 may have certain process defects, so in this embodiment, after the first drying is completed, the first colored paint layer 20 may be polished and polished in a manual polishing manner, thereby further improving the paint spraying quality.
The second colored paint is directly sprayed on the first colored paint layer 20, so that the spraying of the varnish paint on the first colored paint layer 20 is omitted, and the process flow is simplified. And after the second color paint is sprayed, performing varnish spraying on the vehicle body, and enabling the varnish-sprayed paint to completely cover the first color paint layer 20 and the second color paint-sprayed paint. After the varnish is applied, the vehicle body is sent to a drying chamber, the dried second color varnish applied paint forms the second color varnish layer 30 on the vehicle body, and the varnish applied paint forms the clear varnish layer 40 on the vehicle body. It should be noted that the clear paint layer 40 completely covers the first colored paint layer 20 and the second colored paint layer 30, so as to ensure the painting quality of the vehicle body painting process of the present invention. Similarly, after the second color paint layer 30 is formed, the second color paint layer 30 may be correspondingly processed in a polishing manner to obtain a higher painting quality.
It is understood that, before the step S10, the following steps are also included:
step S60: carrying out electrophoresis treatment on the vehicle body;
step S70: and drying the electrophoresis-treated vehicle body to form an electrophoresis layer 50 on the vehicle body.
In this embodiment, in order to ensure that the paint can be stably attached to the vehicle body, the vehicle body needs to be pretreated before painting. Specifically, the car body is subjected to cathode electrophoresis in an electrophoresis mode, and after the electrophoresis is finished, the car body is dried to form the electrophoresis layer 50. Wherein, the drying temperature in the drying treatment can be selected within the range of 165-175 ℃, and the drying time is 15-25 min.
According to the technical scheme, the first color paint is sprayed immediately after the intermediate coat is sprayed, and the two kinds of sprayed paint are dried together; and (4) after drying, spraying the second color paint, simultaneously spraying varnish on the two color paints, and simultaneously baking and curing. And a plurality of working procedures are saved, the production process is simplified, and the production efficiency is improved.
Further, referring to fig. 2, fig. 2 is a schematic flow chart of a second embodiment of the paint spraying process of the present invention, and step S10 specifically includes:
step S11: carrying out intermediate coating spraying on the vehicle body;
step S12: the first paint spray is applied to the vehicle body when the midcoat paint is not allowed to dry.
Step S20 specifically includes:
step S21: leveling the paint vehicle to be subjected to the middle coating spraying and the first color paint spraying;
step S22: and continuously drying the leveled paint at the drying temperature of 140-150 ℃ for 20-30 min.
In this embodiment, after the electrophoresis treatment of the vehicle body is completed, the vehicle body is moved to a paint spray booth in which a plurality of painting robots are provided. Specifically, 8 spraying robots can be used for middle coating spraying, and the other 2 spraying robots are used for first color paint spraying, so that the middle coating spraying process and the first color paint spraying process are not required to be stopped, the vehicle body is kept still, and the two paints are naturally leveled. And finally, moving the car body to a drying chamber or drying in a drying oven. In the embodiment, only one side of the first colored paint is required to be dried after the first colored paint is sprayed, so that the redundant drying step after the intermediate coating is sprayed in the prior art is omitted.
In the embodiment, the drying temperature is 140-150 ℃, and the drying time is 20-30 min. It should be noted that, when the drying temperature is higher, the drying time period is shorter, whereas, when the drying temperature is lower, the drying time period is longer. For example, when drying is performed at 140 ℃, the drying time is 30 min; when drying is carried out at 150 ℃, the drying time is 20 min.
Further, referring to fig. 3, fig. 3 is a schematic flow chart of a vehicle body paint spraying process according to a third embodiment of the present invention, and before step S30, the method includes the following steps:
step S31: attaching shielding films to a first preset position and a second preset position of the vehicle body;
after step S30, the following steps are included;
step S32: and removing the shielding film on the first preset position.
After the step S40, the method further includes a step S33: and removing the shielding film at the second preset position.
In this embodiment, according to a vehicle model or a design requirement, the colored paint layers with different colors are required to be flatly sprayed on different positions on the vehicle body. Therefore, in the present embodiment, after the first colored paint layer 20 is formed on the vehicle body, the masking film is provided at a predetermined position of the vehicle body. In this embodiment, the first preset position and the second preset position are taken as an example for description. It is understood that, the present embodiment includes but is not limited to the above-mentioned solutions, and in the case of other vehicle types or design requirements, more different preset positions, such as a third preset position, a fourth preset position, and so on, may be set on the vehicle body. The preset positions may be specifically represented as, for example, a ceiling, a window, a car light, a rearview mirror, and the like, and each preset position may correspond to one or a type of part of the car body.
Specifically, after the first colored paint layer 20 is formed, the shielding films are arranged at the first preset position and the second preset position, and the first preset position is defined as a ceiling. And after the shielding film is arranged, spraying second color paint on the vehicle body. After the spraying is completed, the masking film on the top-spraying is removed, for example, by a wet film method. And the shielding film on the second preset position is reserved and is dried for the second time. Therefore, different production processes are met, the compatibility of the vehicle body paint spraying process is improved, and the vehicle body paint spraying process is suitable for paint spraying processes of more different vehicle types. And after the second drying is finished, removing the shielding film on the second preset position.
Further, referring to fig. 4, fig. 4 is a schematic flow chart of a vehicle body paint spraying process according to a fourth embodiment of the present invention, and after step S40, the method further includes the following steps:
step S80: detecting whether the vehicle body has defects;
step S90: and when the defect is detected on the vehicle body, carrying out coping and polishing treatment on the position with the defect on the vehicle body.
Further, after the second drying is completed, due to the influence of factors such as process means and environment in the process of practical application, certain process defects may exist on the dried first colored paint layer 20 or the dried second colored paint layer 30, so in this embodiment, after the second drying is completed, the vehicle body can be comprehensively detected in an instrument detection mode, thereby ensuring the reliability of the vehicle body paint spraying process and improving the paint spraying quality. However, when a defect is detected, it is possible to perform operations such as grinding, polishing, etc. in a manual manner with respect to a position on the vehicle body having the defect, thereby further improving the painting quality.
In addition, in order to solve the above problems, the present invention further provides a vehicle paint structure, please refer to fig. 5, the vehicle paint structure is manufactured by the vehicle body paint spraying process, the vehicle paint structure includes a middle coating 10, a first colored paint layer 20, a second colored paint layer 30 and a clear paint layer 40, the first colored paint layer 20 completely covers the middle coating 10, the second colored paint layer 30 partially covers the first colored paint layer 20, and the clear paint layer 40 covers the first colored paint layer 20 and the second colored paint layer 30.
In this embodiment, a robot may be used to perform full-automatic painting, or a manual painting may be used to perform painting operations on the vehicle body. When the robot is adopted for automatic spraying, a plurality of robots can be adopted for spraying the vehicle body, so that the production efficiency is further improved. In the present embodiment, a mode of automatic robot spraying will be described as an example. Firstly, the vehicle body is subjected to intermediate coating spraying by a robot by using an intermediate coating paint vehicle, after the intermediate coating spraying is finished, the vehicle body is immediately subjected to first color paint spraying by using a first color paint vehicle, after the first color paint spraying is finished, the vehicle body is sent into a drying chamber, the intermediate coating sprayed paint vehicle and the first color paint sprayed paint vehicle are dried, the dried intermediate coating sprayed paint vehicle forms the intermediate coating 10 on the vehicle body, and the first color paint sprayed paint vehicle forms the first color paint layer 20 on the vehicle body.
It should be noted that after the first drying is completed, the car body is polished. In the actual application process, under the influence of factors such as process means and environment, the dried first colored paint layer 20 may have certain process defects, so in this embodiment, after the first drying is completed, the first colored paint layer 20 may be polished and polished in a manual polishing manner, thereby further improving the paint spraying quality.
The second colored paint is directly sprayed on the first colored paint layer 20, so that the spraying of the varnish paint on the first colored paint layer 20 is omitted, and the process flow is simplified. And after the second color paint is sprayed, performing varnish spraying on the vehicle body, and enabling the varnish-sprayed paint to completely cover the first color paint layer 20 and the second color paint-sprayed paint. After the varnish is applied, the vehicle body is sent to a drying chamber, the dried second color varnish applied paint forms the second color varnish layer 30 on the vehicle body, and the varnish applied paint forms the clear varnish layer 40 on the vehicle body. It should be noted that the clear paint layer 40 completely covers the first colored paint layer 20 and the second colored paint layer 30, so as to ensure the painting quality of the vehicle body painting process of the present invention. Similarly, after the second color paint layer 30 is formed, the second color paint layer 30 may be correspondingly processed in a polishing manner to obtain a higher painting quality.
In this embodiment, it is not necessary to spray a clear paint layer 40 after the color paint layer, and when a two-color or more medium-color paint spraying process is adopted, it is only necessary to spray the clear paint layer 40 on the color paint layer after the color paint layer is completely sprayed. On one hand, the process steps are saved, and the production efficiency is improved; on the other hand, the structure is more simplified, and the production cost is reduced.
Before spraying, electrophoresis treatment can be carried out on the vehicle body; and drying the electrophoresis-treated vehicle body to form an electrophoresis layer 50 on the vehicle body. That is, the electrophoretic layer 50 is located between the middle coat 10 and the vehicle body. In this embodiment, in order to ensure that the paint can be stably attached to the vehicle body, the vehicle body needs to be pretreated before painting. Specifically, the vehicle body is subjected to cathode electrophoresis in an electrophoresis manner, and after the electrophoresis is finished, the vehicle body is dried to form the electrophoresis layer 50. Wherein, the drying temperature in the drying treatment can be selected within the range of 165-175 ℃, and the drying time is 15-25 min.
According to the technical scheme, the first color paint is sprayed immediately after the intermediate coat is sprayed, and the two kinds of sprayed paint are dried together; and (4) after drying, spraying the second color paint, simultaneously spraying varnish on the two color paints, and simultaneously baking and curing. And a plurality of working procedures are omitted, the production process is simplified, and the production efficiency is improved.
In addition, in order to solve the problems, the invention further provides a vehicle, wherein the vehicle body is provided with the vehicle paint structure, and the middle coating layer in the vehicle paint structure completely covers the vehicle body.
In this embodiment, full-automatic spraying can be realized by adopting a robot, or the vehicle body can be sprayed by adopting a manual spraying mode. When the robot is adopted for automatic spraying, a plurality of robots can be adopted for spraying the automobile body, so that the production efficiency is further improved. In the present embodiment, a mode of automatic robot spraying will be described as an example. Firstly, performing intermediate coat spraying on the vehicle body by using an intermediate coat paint through a robot, immediately performing the first-color paint spraying on the vehicle body by using a first-color paint after the intermediate coat spraying is finished, sending the vehicle body into a drying chamber after the first-color paint spraying is finished, drying the intermediate coat sprayed paint and the first-color paint sprayed paint, forming the intermediate coat 10 on the vehicle body by using the dried intermediate coat sprayed paint, and forming the first-color paint layer 20 on the vehicle body by using the first-color paint sprayed paint.
It should be noted that after the first drying is completed, the car body is polished. In the actual application process, under the influence of factors such as process means and environment, the dried first colored paint layer 20 may have certain process defects, so in this embodiment, after the first drying is completed, the first colored paint layer 20 may be polished and polished in a manual polishing manner, thereby further improving the paint spraying quality.
The second colored paint is directly sprayed on the first colored paint layer 20, so that the spraying of the varnish paint on the first colored paint layer 20 is omitted, and the process flow is simplified. And after the second color paint is sprayed, performing varnish spraying on the vehicle body, and enabling the varnish-sprayed paint to completely cover the first color paint layer 20 and the second color paint-sprayed paint. After the varnish is applied, the vehicle body is sent to a drying chamber, the dried second color varnish applied paint forms the second color varnish layer 30 on the vehicle body, and the varnish applied paint forms the clear varnish layer 40 on the vehicle body. It should be noted that the clear paint layer 40 completely covers the first colored paint layer 20 and the second colored paint layer 30, so as to ensure the painting quality of the vehicle body painting process of the present invention. Similarly, after the second color paint layer 30 is formed, the second color paint layer 30 may be correspondingly processed in a polishing manner to obtain a higher painting quality.
In this embodiment, it is not necessary to spray a clear paint layer 40 after the color paint layer, and when a two-color or more medium-color paint spraying process is adopted, it is only necessary to spray the clear paint layer 40 on the color paint layer after the color paint layer is completely sprayed. On one hand, the process steps are saved, and the production efficiency is improved; on the other hand, the structure is more simplified, and the production cost is reduced.
Before spraying, electrophoresis treatment can be carried out on the vehicle body; and drying the electrophoresis-treated vehicle body to form an electrophoresis layer 50 on the vehicle body. That is, the electrophoretic layer 50 is positioned between the middle coat layer 10 and the vehicle body. In this embodiment, in order to ensure that the paint can be stably attached to the vehicle body, the vehicle body needs to be pretreated before painting. Specifically, the car body is subjected to cathode electrophoresis in an electrophoresis mode, and after the electrophoresis is finished, the car body is dried to form the electrophoresis layer 50. Wherein, the drying temperature in the drying treatment can be selected within the range of 165-175 ℃, and the drying time is 15-25 min.
According to the technical scheme, the first color paint is sprayed immediately after the intermediate coat is sprayed, and the two kinds of sprayed paint are dried together; and after drying, spraying the second colored paint, simultaneously spraying varnish on the two colored paints, and simultaneously baking and curing. And a plurality of working procedures are saved, the production process is simplified, and the production efficiency is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The vehicle body paint spraying process is characterized by comprising the following steps:
carrying out intermediate coating spraying on the vehicle body, and carrying out first color paint spraying on the vehicle body;
drying the vehicle body for the first time to form a middle coating completely covering the vehicle body and a first colored paint layer partially covering the middle coating;
performing second color paint spraying and varnish spraying on the part of the middle coating layer which is not shielded by the first color paint layer and the first color paint layer;
and drying the vehicle body for the second time to form a part covering the middle coating and a second colored paint layer on the first colored paint layer, and form a layer covering the first colored paint layer and a clear paint layer on the second colored paint layer completely.
2. The vehicle body painting process according to claim 1, wherein the step of applying a midcoat paint to the vehicle body and applying a first paint to the vehicle body comprises:
carrying out intermediate coating spraying on the vehicle body;
the body is painted a first color paint while the midcoat paint is not setting dry.
3. The vehicle body painting process of claim 2, wherein the step of first drying the vehicle body comprises:
leveling the paint vehicle to be subjected to the middle coating spraying and the first color paint spraying;
and continuously drying the leveled paint at the drying temperature of 140-150 ℃ for 20-30 min.
4. The vehicle body painting process according to claim 1, wherein the step of spraying the second colored paint and the step of spraying the clear paint on the first colored paint layer is preceded by the steps of:
attaching shielding films to a first preset position and a second preset position of the vehicle body;
after the step of spraying the second colored paint and the step of spraying the varnish on the first colored paint layer, the method further comprises the following steps:
removing the shielding film at the first preset position;
after the step of drying the car body for the second time, the method further comprises the following steps:
and removing the shielding film on the second preset position.
5. The vehicle body paint spraying process according to any one of claims 1 to 4, further comprising, before the step of forming the intercoat layer by intercoat spraying the vehicle body:
carrying out electrophoresis treatment on the vehicle body;
and drying the electrophoresis-treated vehicle body to form an electrophoresis layer on the vehicle body.
6. The vehicle body painting process according to claim 5, wherein the step of drying the vehicle body after the electrophoresis treatment comprises:
and continuously drying the electrophoresis-treated car body for 15-25 min at the drying temperature of 165-175 ℃.
7. The vehicle body paint spraying process according to any one of claims 1 to 4, further comprising, after the step of first drying the vehicle body:
and polishing the car body.
8. The vehicle body paint spraying process according to any one of claims 1 to 4, further comprising, after the step of performing secondary drying on the vehicle body:
detecting whether the vehicle body has defects;
and when the defect is detected on the vehicle body, carrying out coping and polishing treatment on the position with the defect on the vehicle body.
9. A vehicle paint structure, characterized in that, the vehicle paint structure is made through the vehicle body paint spraying process of any one of claims 1-8, the vehicle paint structure comprises a middle coating, a first colored paint layer, a second colored paint layer and a clear paint layer, the first colored paint layer completely covers the middle coating, the second colored paint layer partially covers the first colored paint layer, and the clear paint layer covers the first colored paint layer and the second colored paint layer.
10. A vehicle comprising a body having the vehicle paint structure of claim 9 disposed thereon, wherein the midcoat layer of the vehicle paint structure completely covers the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210496081.3A CN114939521A (en) | 2022-05-07 | 2022-05-07 | Vehicle body paint spraying process, vehicle paint structure and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210496081.3A CN114939521A (en) | 2022-05-07 | 2022-05-07 | Vehicle body paint spraying process, vehicle paint structure and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114939521A true CN114939521A (en) | 2022-08-26 |
Family
ID=82907634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210496081.3A Pending CN114939521A (en) | 2022-05-07 | 2022-05-07 | Vehicle body paint spraying process, vehicle paint structure and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114939521A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728531A (en) * | 2012-07-17 | 2012-10-17 | 郑州日产汽车有限公司 | Tinted spraying technology for automobile body |
| CN103028533A (en) * | 2012-09-04 | 2013-04-10 | 济南吉利汽车有限公司 | Automobile surface paint chromatic spraying method |
| CN111266278A (en) * | 2020-03-31 | 2020-06-12 | 东风柳州汽车有限公司 | Color register coating process for automobile |
| CN112958410A (en) * | 2021-03-26 | 2021-06-15 | 东风柳州汽车有限公司 | Double-color passenger car finish paint process |
-
2022
- 2022-05-07 CN CN202210496081.3A patent/CN114939521A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728531A (en) * | 2012-07-17 | 2012-10-17 | 郑州日产汽车有限公司 | Tinted spraying technology for automobile body |
| CN103028533A (en) * | 2012-09-04 | 2013-04-10 | 济南吉利汽车有限公司 | Automobile surface paint chromatic spraying method |
| CN111266278A (en) * | 2020-03-31 | 2020-06-12 | 东风柳州汽车有限公司 | Color register coating process for automobile |
| CN112958410A (en) * | 2021-03-26 | 2021-06-15 | 东风柳州汽车有限公司 | Double-color passenger car finish paint process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4227192B2 (en) | Multi-layer coating method | |
| KR102452463B1 (en) | Method and installation for painting a surface of a component with a pattern | |
| US20160001322A1 (en) | Painting method and painting facility for decorative stripes | |
| CN103128042A (en) | Automobile body color register coating process | |
| CN112264279A (en) | Flexible color register coating process for automobile body | |
| CN111266278A (en) | Color register coating process for automobile | |
| CN112275594A (en) | Flexible color register coating method for automobile body | |
| CN114939521A (en) | Vehicle body paint spraying process, vehicle paint structure and vehicle | |
| CN109877014A (en) | A kind of coating chromatography technique | |
| JP3653953B2 (en) | Maskingless two-tone painting method | |
| US7943197B2 (en) | Process for producing two-tone coated substrates | |
| JP7074710B2 (en) | Painting method | |
| CN113996472A (en) | Spraying tool and exterior trim coating method | |
| JPH0240261A (en) | Multicolor painting method | |
| CN116078630B (en) | Coating method of black-top white car body | |
| JP2019084711A (en) | Coating repaired article and coating repairing method | |
| CN114985229A (en) | Non-shielding multicolor coating process for automobile body | |
| JP2828648B2 (en) | Repair paint for pearl coating and its repair method | |
| JP2002113418A (en) | Method for partially repairing paint film | |
| JPH02149377A (en) | Multicolor coating of automobile | |
| JPS6325823B2 (en) | ||
| JP4321001B2 (en) | Painting method | |
| JPS5889975A (en) | Dichromatic coating method | |
| JPS6048171A (en) | Partial painting method of automotive body | |
| JPH03135472A (en) | Coating method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220826 |