CN113996472A - Spraying tool and exterior trim coating method - Google Patents
Spraying tool and exterior trim coating method Download PDFInfo
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- CN113996472A CN113996472A CN202111230145.7A CN202111230145A CN113996472A CN 113996472 A CN113996472 A CN 113996472A CN 202111230145 A CN202111230145 A CN 202111230145A CN 113996472 A CN113996472 A CN 113996472A
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- spraying
- support
- exterior
- exterior trimming
- coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
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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
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
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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
- 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
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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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/12—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a coating with specific electrical properties
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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
- 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
- B05D7/24—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 for applying particular liquids or other fluent materials
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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
- 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
- B05D7/57—Three layers or more the last layer being a clear coat
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a spraying tool and an exterior trimming part coating method, wherein the spraying tool comprises an installation seat and a plurality of spraying supports, the spraying supports can be selectively installed on the installation seat to respectively combine with the installation seat to form a plurality of different spraying support groups for adapting to exterior trimming parts with different specifications, and each spraying support comprises at least two support parts which are arranged oppositely and used for respectively abutting against the opposite wall surfaces of the corresponding exterior trimming parts. According to current production needs, select suitable spraying support, so set up the basic position of being convenient for confirm the exterior trim in the spraying process, the equipment adjustment range that the spraying process was used is little, when needs carry out the automobile body spraying again, demolish corresponding spraying support, can resume the auxiliary fixtures of automobile body spraying fast, the flexibility is strong, and is little to the influence of former automobile body production line.
Description
Technical Field
The invention relates to the technical field of automobile manufacturing, in particular to a spraying tool and an exterior trim coating method.
Background
With the development of automobile manufacturing technology and the requirement of cost reduction, in recent years, the coating production line of a host factory adopts a water-based 3C1B coating process, and the coating surfaces of exterior trimming parts are more, and the change of the coating angle is large, so the host factory generally coats the exterior trimming parts by constructing a separate resin workshop, however, part of the host factory considers the floor area and the construction cost, and does not establish a separate workshop for coating the exterior trimming parts, so the coating of the exterior trimming parts becomes a difficulty in production and processing.
Disclosure of Invention
The invention mainly aims to provide a spraying tool and an exterior trimming part coating method, which are used for spraying exterior trimming parts by utilizing a vehicle body coating line, meet the production requirements of exterior trimming parts of a host factory without a separately-arranged resin workshop and have low investment cost.
In order to achieve the above object, the present invention provides a spraying tool, including:
a mounting seat; and the number of the first and second groups,
the spraying supports are selectively mounted on the mounting seat to be combined with the mounting seat to form a plurality of different spraying support groups respectively and are used for adapting to exterior trimming parts with different specifications, and each spraying support comprises at least two oppositely-arranged support parts which are used for being abutted against the corresponding wall surfaces of the exterior trimming parts respectively.
Optionally, the plurality of spray painting brackets include a front protection spray painting bracket, the front protection spray painting bracket including:
the first support is detachably mounted on the mounting seat; and the number of the first and second groups,
the connecting rod extends along the width direction of the first support and is arranged at intervals along the length direction of the first support, the two arc-shaped support rods are arranged on the connecting rod at intervals, an included angle is formed between the two arc-shaped support rods, and the upper surfaces of the two arc-shaped support rods are used for being abutted to the corresponding wall surface of the exterior trim part;
the support portion includes the first support structure.
Optionally, a plurality of the spray painting support comprises a rear protection spray painting support, the rear protection spray painting support comprises:
the second support is detachably mounted on the mounting seat; and the number of the first and second groups,
each second support structure comprises a plurality of long supporting rods, one ends of the long supporting rods are connected with one side end of the second support, and the other ends of the long supporting rods are far away from each other and are used for being abutted against the wall surface corresponding to the exterior trimming part;
the support portion includes the second support structure.
Optionally, each of said second support structures further comprises a plurality of reinforcing rods, each of said reinforcing rods being connected to two adjacent of said elongate struts; and/or the presence of a gas in the gas,
the end parts, far away from the second support, of the long support rods are provided with abutting rods in a protruding mode, the abutting rods and the corresponding long support rods are arranged in an included angle mode, and the abutting rods are used for abutting against the wall face corresponding to the exterior trimming part.
The invention also provides an exterior trimming part coating method, which comprises the following steps:
providing an exterior trimming part to be sprayed and installing the exterior trimming part on a spraying tool, wherein the spraying tool is the spraying tool according to any one of claims 1 to 4;
pretreating the surface of the exterior trimming part to be sprayed;
coating PP conductive primer on the surface of the external decoration after the pretreatment, and leveling to obtain a first part;
and carrying out color paint spraying and varnish spraying on the first part, and drying to obtain a finished product.
Optionally, after the step of "coating the surface of the exterior trimming part after the pretreatment with the PP conductive primer and leveling to obtain the first part", and before the step of "performing color paint spraying and varnish spraying on the first part and drying to obtain the finished product", the method further comprises the following steps:
a portion of the surface of the first part is pre-painted manually with a colored paint.
Optionally, before the step of providing the exterior trim part to be sprayed and mounting the exterior trim part on the spraying tool, the method further comprises the following steps:
and washing the exterior trimming part to be sprayed.
Optionally, the step of pretreating the surface of the exterior trim part to be sprayed includes:
and (4) carrying out oil removal wiping and electrostatic dust removal on the surface of the exterior trimming part to be sprayed.
Optionally, the step of performing paint spraying and varnish spraying on the first part and drying to obtain a finished product includes:
carrying out colored paint spraying on the first part, and leveling for 85-95 min;
and then, performing varnish spraying on the first part after the colored paint spraying is finished, and drying the first part at the temperature of 75-81 ℃ for 50-60min to obtain a finished product.
Optionally, the step of coating a PP conductive primer on the surface of the exterior trimming part after the pretreatment, and leveling to obtain the first part is as follows:
the leveling time is 5-8 min.
According to the technical scheme, a plurality of spraying supports are designed for exterior trimming parts of different specifications, the spraying supports share the same mounting seat, the proper spraying support is selected according to the current production requirement, the basic position of the exterior trimming parts in the spraying process is convenient to confirm through the arrangement, the adjustment range of equipment used in the spraying process is small, when the automobile body is required to be sprayed, the corresponding spraying support is detached, the auxiliary tool for spraying the automobile body can be quickly recovered, the flexibility is high, the influence on the original automobile body production line is small, the two supporting parts and the corresponding exterior trimming parts are supported and positioned, the exterior trimming parts cannot deform under the influence of external force and environmental temperature in the spraying process, and the processing quality is guaranteed.
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 perspective view of a front protection spraying bracket (at an angle) in the spraying tool provided by the present invention;
FIG. 2 is a schematic view of the front fender spray bracket of FIG. 1 (at another angle);
fig. 3 is a schematic perspective view of a rear protective spraying bracket (at an angle) in the spraying tool provided by the present invention;
FIG. 4 is a schematic view of the rear fender spray bracket of FIG. 3 (at another angle);
fig. 5 is a schematic flow chart of the exterior trim coating method provided by the invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained 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, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The traditional process for spraying the vehicle body comprises the following steps:
electrophoretic car body → electrophoretic sanding → gumming → floating coat spray → floating coat drying → floating coat sanding → finishing coat cleaning → spray coating of BC (color paint) → flash dry dehydration → spray coating of CC (varnish) → drying → fine repair.
The spraying process of the interior and exterior trimming parts in the industry at present:
upper part → dust removal and oil removal by wiping → electrostatic dust removal → spraying of PP primer → PP leveling → BC1 spraying → BC2 spraying → edge hooking of robot air gun → BC leveling → CC spraying → drying → fine modification.
There are many technological differences between car body painting and exterior trim painting, so if car body painting lines are used to paint exterior trims, there are difficulties:
1. the spraying surfaces of the exterior trimming parts are more, the spraying angle change is large, so the spraying robot is usually combined with a floor-mounted type, the smoothness of the spraying action and the stability of the spraying quality are ensured, the process installation of the two-wire robot is a wall-mounted type specially related to the vehicle body spraying, the installation height is unified into a horizontal height, and the defects of low flexibility and poor maneuverability exist;
2. in a vehicle body coating line, the coating process of exterior trimming parts is different from the coating process of sheet metal parts, and the risks of serious particle fibers, shrinkage cavities, abnormal adhesion and the like can occur due to improper process treatment. In order to solve the problems, the field process and the treatment mode need to be improved;
3. the process equipment of the exterior decoration color paint spraying process is not matched with the process equipment of the vehicle body spraying process;
4. the baking window for spraying the exterior trimming parts is generally 80 ℃ and 40min, the baking window for spraying the vehicle body is 140 ℃ and 20min, the baking temperature exceeding 85 ℃ causes irreversible deformation defects to the exterior trimming parts,
in view of this, the present invention provides a spraying tool and an exterior trim coating method, fig. 1 to 4 are embodiments of the spraying tool provided by the present invention, and fig. 5 is an embodiment of the exterior trim coating method provided by the present invention.
Specifically, the automobile exterior trim mainly includes: the automobile outer decoration piece comprises a bumper, an air inlet grille, a rearview mirror, a side skirt, a car lamp, a column decorative plate, a luggage rack, a door handle, a skylight, a windscreen wiper and the like.
Referring to fig. 1 and 3, the spraying tool includes a mounting seat and a plurality of spraying brackets, the plurality of spraying brackets are selectively mounted on the mounting seat to respectively combine with the mounting seat to form a plurality of different spraying support groups for adapting to exterior trimming parts of different specifications, and each spraying bracket includes at least two support portions arranged oppositely for respectively abutting against the wall surface opposite to the corresponding exterior trimming part.
According to the technical scheme, a plurality of spraying supports are designed for exterior trimming parts of different specifications, the spraying supports share the same mounting seat, the proper spraying support is selected according to the current production requirement, the basic position of the exterior trimming parts in the spraying process is convenient to confirm through the arrangement, the adjustment range of equipment used in the spraying process is small, when the automobile body is required to be sprayed, the corresponding spraying support is detached, the auxiliary tool for spraying the automobile body can be quickly recovered, the flexibility is high, the influence on the original automobile body production line is small, the two supporting parts and the corresponding exterior trimming parts are supported and positioned, the exterior trimming parts cannot deform under the influence of external force and environmental temperature in the spraying process, and the processing quality is guaranteed.
Further, to the spraying location of front bumper, please refer to fig. 1-2, it is a plurality of the spraying support includes preceding guarantor spraying support 1, preceding guarantor spraying support 1 includes first support 11 and two first bearing structures, first support 11 demountable installation extremely on the mount pad, each first bearing structure includes connecting rod 121 and two arc branch 122, connecting rod 121 follows the width direction of first support 11 extends, and follows the length direction interval of first support 11 sets up, two arc branch 122 is located at the interval on connecting rod 121, two arc branch 122 is the contained angle setting, two the upper surface of arc branch 122 is used for corresponding the wall butt with outer gadget, wherein, the supporting part includes first bearing structure. That is, in this embodiment, the two first support structures are used as two support portions to be abutted against the corresponding portions of the inner side surface of the front bumper for positioning, and the curvature of the two arc-shaped struts 122 is adapted to the shape of the corresponding front bumper.
It should be noted that the included angle between the two arc-shaped supporting rods 122 is θ, wherein 90 ° ≧ θ ≧ 10 °.
In order to adapt to the height of the exterior trimming part to be sprayed, in an embodiment, both ends of each of the arc-shaped supporting rods 122 are connected with the connecting rod 121 through a connecting rod 123, so that the height difference between the first supporting seat 11 and the exterior trimming part to be sprayed is compensated. At this time, in order to ensure the strength, a steel pipe is connected between the two connecting rods 123 extending in the up-and-down direction to prevent deformation from affecting positioning.
In another embodiment, referring to fig. 3 to 4, for the painting positioning of the rear bumper, the plurality of painting brackets include a rear protection painting bracket 2, the rear protection painting bracket 2 includes a second support base 21 and two second support structures, the second support base 21 is detachably mounted on the mounting base, each of the second support structures includes a plurality of elongated struts 221, one end of each of the plurality of elongated struts 221 is connected to one side end of the second support base 21, and the other ends of the plurality of elongated struts 221 are away from each other for abutting against a wall surface corresponding to an exterior trim, where the support portions include the second support structures. That is, in this embodiment, the two second support structures are used as two support portions, and are abutted to corresponding portions of the inner side surface of the rear bumper for positioning, the plurality of elongated struts 221 are distributed, and included angles between the elongated struts are not completely the same, and are matched with a plurality of positioning points of the inner wall surface of the corresponding rear bumper, so that the number of the elongated struts 221 and the included angles between two adjacent elongated struts 221 are all set reasonably according to the current exterior trim structure. In this embodiment, referring to fig. 4, four elongated struts 221 are disposed in each of the second supporting structures.
In order to increase the strength of the elongated struts 221, in an embodiment of the present invention, each of the second support structures further includes a plurality of reinforcing rods 222, each of the reinforcing rods 222 is connected to two adjacent elongated struts 221; the plurality of reinforcing rods 222 provide additional support and connection between the plurality of elongated struts 221 to prevent the plurality of elongated struts 221 from breaking and deforming after extended use.
In order to adapt to the curvature of the inner wall surface of the exterior trim, the end portions of the long support rods 221 far away from the second support 21 are respectively provided with a butting rod 2211 in a protruding manner, each butting rod 2211 and the corresponding long support rod 221 form an included angle, and the butting rods 2211 are used for butting against the wall surface corresponding to the exterior trim. Each of the abutting rods 2211 may be combined with the corresponding elongated strut 221 to form a T-shape or an L-shape to adapt to different inclined planes of the inner wall surface of the exterior trim.
It should be noted that the two related technical features may be set simultaneously or alternatively, and the simultaneous setting effect is better in this embodiment.
Further, the second support 21 is designed in an L shape and is formed by splicing a plurality of steel pipes, the steel pipes forming the bottom surface are embedded into corresponding grooves in the mounting seat to be connected in a matching manner, and the cross section of each steel pipe is square.
Furthermore, in order to prevent the external decoration piece from shaking in the moving process, a plurality of positioning pins can be arranged and respectively pass through the through holes on the external decoration piece to be sprayed and are inserted into the corresponding positions on the spraying support, so that the stability is improved.
The invention also provides an exterior trimming part coating method, which is used for carrying out auxiliary installation on exterior trimming parts to be sprayed through the spraying tool, and the exterior trimming part coating method specifically comprises the following steps:
s20, providing an exterior trimming part to be sprayed, and mounting the exterior trimming part on a spraying tool;
s30, preprocessing the surface of the exterior trimming part to be sprayed;
s40, coating PP conductive primer on the surface of the preprocessed exterior trimming part, and leveling to obtain a first part;
and S60, carrying out color paint spraying and varnish spraying on the first part, and drying to obtain a finished product.
It should be noted that the exterior trimming part to be sprayed is fixed through the spraying tool, so that the exterior trimming part is kept stable all the time in the whole coating process, surface pretreatment is performed on the exterior trimming part to be sprayed, the subsequent process is facilitated, PP conductive primer and finish paint are sequentially sprayed on the surface of the exterior trimming part after pretreatment, specifically, the finish paint comprises color paint and varnish, drying and leveling are needed after each spraying, the spraying structure in the previous step is prevented from being affected by the next spraying, the coating is enabled to be uneven and the quality is affected, and finally, a finished workpiece is obtained after drying.
Further, the following steps are also included between step S40 and step S60:
and S50, performing manual pre-coating of the colored paint on the local part of the surface of the first part.
The front bumper or the rear bumper of the automobile is provided with uneven parts and concave joints according to modeling requirements, in the automatic spraying process, the suspension cup spraying is electrostatic spraying, and due to the electrostatic surrounding effect, the uneven parts and the concave joints are not easy to paint, so that the parts are pre-coated by a hand air spray gun before formal finish paint coating is carried out, a product which is completely sprayed can be obtained during finish paint coating, static electricity is not generated during spraying of the hand air spray gun, the static electricity surrounding effect is not influenced, the hand air spray gun is combined with subsequent color paint suspension cup spraying and varnish suspension cup spraying together, a processing mode of firstly spraying the hand air spray gun and then spraying the suspension cup is formed, and the processing qualification rate is improved.
Further, before step S20, the method further includes the following steps:
and S10, washing the exterior trimming part to be sprayed with water.
The outer decoration piece is easy to adsorb particles, fibers and the like in a sticky environment due to the material property of the outer decoration piece, so that the number of the defects of the particles and the fibers on the surface of the outer decoration piece is increased, the spraying quality is influenced during spraying, in an original automobile body coating line, a training room is used as a skill training room body for spraying, sheet metal, polishing and waxing, the training room in the original automobile body coating line is transformed into a cleaning room body aiming at the defect, and a water washing step is added for a coating process.
Further, the preprocessing in step S30 specifically includes:
and (4) carrying out oil removal wiping and electrostatic dust removal on the surface of the exterior trimming part to be sprayed.
It should be noted that, by removing dust and oil from the surface of the exterior trimming part, oil stains and dust on the surface of the exterior trimming part are removed, and then the surface of the exterior trimming part is subjected to dust removal by using the electrostatic dust removal device.
Further, step S60 includes:
s61, performing colored paint spraying on the first part, and leveling for 85-95 min;
it should be noted that, the conventional color paint spraying process for exterior parts is a two-color paint spraying process, and the more the number of spraying passes, the more the number of spraying passes is, in this embodiment, the internal power-up type rotary cup spraying solvent-based color paint is used to perform one-time color paint spraying on the first part, compared with the existing two-pass spraying, the dilution ratio of the paint is adjusted, for example, the dilution ratio of the existing first-pass spraying is 40%, the process is adjusted to 30%, so that the paint is integrally drier, and meanwhile, the rotation speed of spraying and the flow of spraying are improved, so that the processing requirement can be met by one-time color paint spraying, the steps of the spraying process are simplified, the energy consumption is saved, and the material cost is reduced. Meanwhile, the leveling time of the traditional color paint of the ornament is 2.5min, the leveling time is short, the dehydration rate is not enough, and the foaming defect is easily caused, the leveling time after the color paint spraying is improved according to the process, the leveling time in the embodiment is 90min, the dehydration rate of the color paint is ensured, and the foaming risk of the color paint is reduced.
S62, performing varnish spraying on the first part after the colored paint spraying is finished, and drying the first part at the temperature of 75-81 ℃ for 50-60min to obtain a finished product.
It should be noted that, by using the internally-powered spin cup to spray the solvent-based varnish, the baking window condition of the exterior part in this embodiment is generally 78 ℃ and 55min, and the baking temperature exceeding 85 ℃ is liable to cause irreversible deformation defect on the exterior part, and due to the design of the above process steps, the corresponding parameters are adjusted. Considering that the coating design of the car body of the drying room of the original coating workshop for adaptation is that the baking temperature of high-temperature paint is 140 ℃ and 20min, and the problem that the metal car body has no baking deformation defect, but most of external decoration parts are plastic parts and are easy to deform due to overhigh temperature, therefore, in order to meet the baking condition of the external decoration parts, the air valve of the heating area is adjusted, so that the air valve can be maintained at the lowest heat exchange quantity, meanwhile, the temperature control valve of the burner in the heat preservation area is corrected and adjusted again, a specially-assigned person is arranged to regularly inspect, monitor and adjust, the temperature is maintained to be stable, and the plastic parts can be baked along with the line.
Further, in step S40, the leveling time is 5-8 min. The surface of the exterior trimming part is made to be conductive, a conductive layer is provided for spraying of the primer, so that the plastic bottom corresponding to the exterior trimming part is dried and leveled in 5-8min, the existing leveling time is generally 2-3min, and corresponding parameter conditions are adjusted according to the process.
It should be noted that, after the composite coating paint film is baked, the finishing line of the finished product part needs to be refined and checked, so as to ensure the quality of the finished product part.
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 utility model provides a spraying frock, its characterized in that includes:
a mounting seat; and the number of the first and second groups,
the spraying supports are selectively mounted on the mounting seat to be combined with the mounting seat to form a plurality of different spraying support groups respectively and are used for adapting to exterior trimming parts with different specifications, and each spraying support comprises at least two oppositely-arranged support parts which are used for being abutted against the corresponding wall surfaces of the exterior trimming parts respectively.
2. The spray coating tool of claim 1 wherein said plurality of spray coating mounts comprise a front fender spray coating mount, said front fender spray coating mount comprising:
the first support is detachably mounted on the mounting seat; and the number of the first and second groups,
the connecting rod extends along the width direction of the first support and is arranged at intervals along the length direction of the first support, the two arc-shaped support rods are arranged on the connecting rod at intervals, an included angle is formed between the two arc-shaped support rods, and the upper surfaces of the two arc-shaped support rods are used for being abutted to the corresponding wall surface of the exterior trim part;
the support portion includes the first support structure.
3. The spray coating tool of claim 1 wherein said plurality of spray coating supports comprise a rear protection spray coating support, said rear protection spray coating support comprising:
the second support is detachably mounted on the mounting seat; and the number of the first and second groups,
each second support structure comprises a plurality of long supporting rods, one ends of the long supporting rods are connected with one side end of the second support, and the other ends of the long supporting rods are far away from each other and are used for being abutted against the wall surface corresponding to the exterior trimming part;
the support portion includes the second support structure.
4. The spray coating tool of claim 3 wherein each said second support structure further comprises a plurality of reinforcing rods, each said reinforcing rod being connected to two adjacent said elongated struts; and/or the presence of a gas in the gas,
the end parts, far away from the second support, of the long support rods are provided with abutting rods in a protruding mode, the abutting rods and the corresponding long support rods are arranged in an included angle mode, and the abutting rods are used for abutting against the wall face corresponding to the exterior trimming part.
5. A method for coating exterior trimming parts is characterized by comprising the following steps:
providing an exterior trimming part to be sprayed and installing the exterior trimming part on a spraying tool, wherein the spraying tool is the spraying tool according to any one of claims 1 to 4;
pretreating the surface of the exterior trimming part to be sprayed;
coating PP conductive primer on the surface of the external decoration after the pretreatment, and leveling to obtain a first part;
and carrying out color paint spraying and varnish spraying on the first part, and drying to obtain a finished product.
6. The exterior trim coating method according to claim 5, wherein after the step of coating the surface of the exterior trim after the pretreatment with the PP conductive primer and leveling to obtain the first part and before the step of spraying the first part with the color paint and the varnish and drying to obtain the finished product, the method further comprises the following steps of:
a portion of the surface of the first part is pre-painted manually with a colored paint.
7. The exterior trim coating method according to claim 5, wherein before the step of providing the exterior trim to be sprayed and mounting the exterior trim on the spraying tool, the method further comprises the steps of:
and washing the exterior trimming part to be sprayed.
8. The exterior trim coating method according to claim 5, wherein the step of pretreating the surface of the exterior trim to be sprayed comprises:
and (4) carrying out oil removal wiping and electrostatic dust removal on the surface of the exterior trimming part to be sprayed.
9. The exterior trim coating method according to claim 5, wherein the step of performing paint spraying and varnish spraying on the first part and drying to obtain a finished product comprises the following steps:
carrying out colored paint spraying on the first part, and leveling for 85-95 min;
and then, performing varnish spraying on the first part after the colored paint spraying is finished, and drying the first part at the temperature of 75-81 ℃ for 50-60min to obtain a finished product.
10. The exterior trim coating method according to claim 5, wherein the step of coating the surface of the exterior trim after the pretreatment with the PP conductive primer and leveling to obtain the first part comprises:
the leveling time is 5-8 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230145.7A CN113996472B (en) | 2021-10-21 | 2021-10-21 | Spraying tool and exterior trim coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230145.7A CN113996472B (en) | 2021-10-21 | 2021-10-21 | Spraying tool and exterior trim coating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113996472A true CN113996472A (en) | 2022-02-01 |
| CN113996472B CN113996472B (en) | 2022-10-18 |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643176A (en) * | 2022-03-18 | 2022-06-21 | 东风柳州汽车有限公司 | Method for vehicle-mounted spraying of matte part and hanger |
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|---|---|
| CN113996472B (en) | 2022-10-18 |
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