Method, device and equipment for repairing matte paint surface of automobile and medium

Abstract

The invention discloses a method, a device, equipment and a medium for repairing a matte paint surface of an automobile, and belongs to the technical field of automobiles. The method comprises the following steps: carrying out pretreatment on a damaged part of the matte paint surface of the automobile, wherein the pretreatment comprises polishing treatment, soot blowing treatment and cleaning treatment; repairing colored paint is sprayed on the pretreated damaged part, wherein the repairing colored paint is prepared by blending a matte colored paint main agent, a matting auxiliary agent, a diluent and a curing agent according to a set proportion; and drying the damaged part sprayed with the repairing colored paint. According to the method, through a special repairing colored paint formula, the colored paint can have the original paint color and the matte effect, the varnish spraying link is successfully omitted, the repaired paint surface has the same fine texture and flatness as the original paint, the touch feeling is smooth, the visual effect is natural, and the repairing quality and the visual effect are further improved.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a method, device, equipment and medium for repairing a matte paint surface of an automobile. Background Art

[0002] Matte car paint is loved by consumers for its unique texture and visual effect. When the matte car paint has slight scratches, scrapes, abrasions, bumps and injuries, the damaged parts need to be repaired.

[0003] In the related art, the damaged part is first pretreated, and then the pretreated part is sprayed with color paint, and then clear varnish is sprayed to improve the glossiness, durability and other properties of the paint surface. However, for matte paint surface, the spraying of clear varnish will change its original matte effect, resulting in differences in gloss and texture between the repaired matte paint surface and the original matte paint surface. Summary of the invention

[0004] In view of the above problems, the present invention is proposed to provide a method, device, equipment and medium for repairing automobile matte paint surfaces that solve the above problems. The repair paint prepared by using matte paint main agent, matte auxiliary agent, diluent and curing agent according to a set ratio can be used to spray the damaged parts of the pre-treated automobile matte paint surface, eliminating the step of spraying varnish. After a one-time spraying, it is dried, so that the gloss and texture of the repaired matte paint surface are very close to the original matte paint surface, meeting customer requirements.

[0005] In a first aspect, the present invention provides a method for repairing a matte paint surface of an automobile, the method comprising:

[0006] Pre-treat the damaged parts of the matte paint surface of the car, including grinding, soot blowing and cleaning;

[0007] Spraying a repair paint on the pre-treated damaged part, wherein the repair paint is prepared by mixing a matte paint main agent, a matting auxiliary agent, a diluent and a curing agent according to a set ratio;

[0008] Dry the damaged area after spraying the repair paint.

[0009] Optionally, after drying the damaged part after spraying the repair paint, the method further comprises:

[0010] Polish the damaged area after drying.

[0011] Optionally, the polishing treatment of the damaged part after drying includes:

[0012] The eccentric polishing machine is controlled to polish the damaged part after drying at a set rotation speed, and the eccentric polishing machine uses a polishing disc with a set mesh value and a polishing paste with a set particle size.

[0013] Optionally, the polishing disc is a sponge polishing disc, and the set mesh value is between 6000 mesh and 8000 mesh.

[0014] Optionally, the polishing paste is aluminum oxide polishing paste, and the set particle size is between 0.5 μm and 0.7 μm.

[0015] Optionally, before spraying the repair paint on the pretreated damaged part, the method further comprises:

[0016] Adding a second volume of a matte paint additive and a third volume of a diluent to a container containing a first volume of a matte paint main agent, and stirring the mixture to obtain a pre-repair paint, wherein a first ratio of the second volume to the first volume is within a preset first ratio range, and a second ratio of the third volume to the first volume is within a preset second ratio range;

[0017] A fifth volume of curing agent is added to the fourth volume of pre-repair paint, and the mixture is stirred evenly to obtain the repair paint, wherein a third ratio of the fourth volume to the fifth volume is a preset ratio.

[0018] Optionally, the drying treatment of the damaged part after spraying the repair paint comprises:

[0019] The baking lamp is controlled to dry the damaged part after spraying the repair paint at a temperature of 300° C., wherein the baking distance is 30-50 cm and the baking time is 10 minutes.

[0020] In a second aspect, the present invention provides a device for repairing a matte paint surface of an automobile, the device comprising:

[0021] Pretreatment module, used for pretreatment of damaged parts of matte paint surface, including grinding, soot blowing and cleaning;

[0022] A spraying module is used to spray a repair paint on the pre-treated damaged part, wherein the repair paint is prepared by mixing a matte paint main agent, a matting auxiliary agent, a diluent and a curing agent according to a set ratio;

[0023] The baking module is used to dry the damaged parts after spraying the repair paint.

[0024] In a third aspect, the present invention provides an electronic device comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method described in the first aspect by executing the computer instructions.

[0025] In a fourth aspect, the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method described in the first aspect.

[0026] The technical solution provided in the embodiments of the present invention has at least the following technical effects or advantages:

[0027] The embodiments of the present invention provide a method, device, equipment and medium for repairing the matte paint surface of an automobile. The damaged parts of the matte paint surface of an automobile are pretreated, and the pretreated damaged parts are sprayed with repair paint. The repair paint is prepared from a matte paint main agent, a matte auxiliary agent, a diluent and a curing agent according to a set ratio. The specially adjusted repair paint is used for spraying, which can save the step of spraying varnish, so that the matte effect, gloss and texture after spraying are better; the damaged parts after spraying the repair paint are dried to make the sprayed surface dry and complete the repair. This method saves the step of spraying varnish, sprays the specially adjusted repair paint once and then dries it, so that the gloss and texture of the repaired matte paint surface are very close to the original matte paint surface, meeting customer requirements.

[0028] In addition, pretreatment includes grinding, soot blowing and cleaning, which can make the damaged part to be painted have a certain degree of roughness, effectively improving the adhesion of the repair paint.

[0029] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0031] Figure 1 This is a flow chart of a method for repairing a matte paint surface of an automobile provided by an embodiment of the present invention;

[0032] Figure 2 The present invention is a structural block diagram of a device for repairing a matte paint surface of an automobile provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present application clearer, the implementation mode of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the embodiments of the present disclosure and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0034] Figure 1 Flow chart of a method for repairing a matte paint surface of an automobile provided by an embodiment of the present invention, such as Figure 1 As shown, the method includes:

[0035] Step S110, pre-treating the damaged part of the matte paint surface of the automobile, wherein the pre-treatment includes grinding, soot blowing and cleaning.

[0036] In this embodiment, the pretreatment is as follows: first, use 800# sandpaper to sand the damaged part until the damage is completely sanded off, and then use 1200# sandpaper to expand the sanding range, reduce the sandpaper marks and enhance the adhesion of the repair paint on the old paint film; after sanding, use compressed air to blow the sanding area to remove the sanding dust; after blowing the dust, use alcohol to clean the sanding area. If the bottom is exposed after sanding, spray the prepared phosphating primer, the thickness of the spraying is required to be between 10 and 12μm, and the bottom color should not be exposed visually.

[0037] Step S120, spraying repair paint on the pre-treated damaged part.

[0038] Among them, the repair paint is prepared by mixing matte paint main agent, matte auxiliary agent, diluent and curing agent according to a set ratio.

[0039] In this embodiment, the pre-mixed repair paint is fully stirred and loaded into the spray gun. The air pressure of the spray gun is adjusted to 0.2-0.4MPa, the spraying distance is controlled at 15-20cm, and a multi-layer thin spraying method is adopted. The spraying thickness of each layer of repair paint is controlled at 5-10μm, and 3 layers are sprayed in total, so that the total thickness of the repair paint reaches 15-30μm. After the repair paint is sprayed, the surface of the repair paint area is smooth, and there is no obvious visual difference between the color and the original paint. Only one-time spraying of the specially adjusted repair paint is required, eliminating the step of spraying varnish, so that the gloss and texture of the matte paint surface after spraying are very close to the original matte paint surface, meeting customer requirements.

[0040] Glossiness refers to the degree of light reflection on the surface of an object. For car paint, glossiness reflects the brightness and smoothness of the paint surface. High-gloss paint looks as bright as a mirror and has strong reflectivity, while low-gloss paint, such as matte paint, reflects relatively weak light, presenting a soft and low-key visual effect.

[0041] Optionally, before step S120, the method further includes how to prepare the repair paint, specifically:

[0042] A second volume of matting aid and a third volume of diluent are added to a container containing a first volume of matte paint main agent, and the mixture is stirred evenly to obtain a pre-repair paint, wherein a first ratio of the second volume to the first volume is within a preset first ratio range, and a second ratio of the third volume to the first volume is within a preset second ratio range. A fifth volume of curing agent is added to a fourth volume of pre-repair paint, and the mixture is stirred evenly to obtain a repair paint, wherein a third ratio of the fourth volume to the fifth volume is a preset ratio.

[0043] In this embodiment, a matte paint of a corresponding color of the original matte paint surface, i.e., a matte paint main agent, of a first volume V1 is added to an empty container. Then, a matting aid of a second volume V2 and a diluent of a third volume V3 are added, and the mixture is stirred well to obtain a pre-repair paint. Among them, V1:V2:V3=1:(0.05-0.1):(0.4-1), i.e., the first ratio range is 0.05-0.1, and the second ratio range is 0.4-1. Finally, a curing agent of a fifth volume V5 is added to the pre-repair paint of a fourth volume V4, and the mixture is stirred well to obtain a repair paint. Among them, V4:V5=2:1.

[0044] In the related art, matte paint is sprayed on the damaged part after pretreatment, and then matte varnish is sprayed. Matt varnish is generally mixed and prepared by mixing matte varnish main agent, diluent and curing agent, but the matte effect is affected after spraying matte varnish. In the present embodiment, considering the components of matte varnish, curing agent is directly mixed into matte paint (i.e. pre-repair paint) to obtain newly prepared repair paint. Then, by using this special formula of repair paint, the paint itself can have the original paint color and matte effect, so that only the repair paint needs to be sprayed during repair, eliminating the varnish spraying link, simplifying the repair process, reducing the construction steps and material consumption, thereby significantly reducing the time cost, labor cost and material cost of repair.

[0045] In this embodiment, the time interval between the step of adding the fifth volume of curing agent to the fourth volume of pre-repair paint and step S120 is less than a preset time.

[0046] It can be understood that the prepared repair paint has an expiration date, so after preparation, the repair paint should be used to spray the pre-treated damaged parts within the validity period. For example, the prepared repair paint has an expiration date of 2 hours, and it needs to be re-prepared after 2 hours. Therefore, after preparation, the repair paint needs to be sprayed on the pre-treated damaged parts within 2 hours to avoid the repair paint becoming ineffective.

[0047] Step S130, drying the damaged part after spraying the repair paint.

[0048] In this embodiment, after spraying the repair paint, a drying process is also performed to dry the repaired part.

[0049] Optionally, step S130 includes:

[0050] The baking lamp is controlled to dry the damaged part after spraying the repair paint at a temperature of 300° C., wherein the baking distance is 30-50 cm and the baking time is 10 minutes.

[0051] In this embodiment, a baking lamp may be used for baking, and a good baking distance and baking time may be maintained during baking to achieve a better baking effect.

[0052] Optionally, the method also includes step S140.

[0053] Step S140: polishing the damaged part after drying.

[0054] Among them, polishing: use specific tools and materials to polish and process the matte paint surface of the car after the repainting to remove the unevenness and granularity of the surface, improve the gloss and flatness of the paint surface, reduce the roughness, and ensure that the unique texture of the matte paint surface is not destroyed. Roughness: refers to the microscopic unevenness of the surface of an object. For the car paint surface, the roughness reflects the opposite indicator of the smoothness of the paint surface. Lower roughness means that the paint surface is smoother and flatter, while higher roughness means that the paint surface has more bumps and bumps. In the process of refinishing the matte paint surface of the car, the roughness needs to be controlled to obtain the ideal paint effect.

[0055] In this embodiment, in order to reduce the roughness of the matte paint surface after repair, the damaged part after drying can be polished.

[0056] Optionally, step S140 includes:

[0057] The eccentric polishing machine is controlled to polish the damaged part after drying at a set rotation speed. The eccentric polishing machine uses a polishing disc with a set mesh value and a polishing paste with a set particle size.

[0058] In this embodiment, an eccentric polishing machine can be used for polishing. The polishing disc is fixed on the polishing machine, and the polishing paste is evenly applied on the polishing disc. The speed of the polishing machine is adjusted to 1500-2000 rpm. The polishing disc is gently placed on the car paint surface after the repainting, and polishing is performed in a tic-tac-toe manner. The area of ​​each polishing is about 40*40cm. During the polishing process, polishing paste should be continuously added to the polishing disc to keep the polishing disc moist. After polishing, the paint surface is flat and smooth, and there is no obvious difference in visual appearance from the original paint gloss. Exemplarily, the eccentric polishing machine uses a 3M eccentric polishing machine.

[0059] Optionally, the polishing disc is a sponge polishing disc, and the set mesh value is between 6000 mesh and 8000 mesh.

[0060] Among them, the polishing pad is a tool used in the process of polishing the car paint. It is usually made of soft materials, such as wool, sponge, etc. The function of the polishing pad is to carry the polishing agent, and through contact and friction with the paint surface, remove the defects of the paint surface and improve the gloss and flatness of the paint surface. Polishing pads of different materials have different characteristics and application ranges. For example, wool polishing pads are relatively hard and suitable for dealing with more stubborn defects; sponge polishing pads are relatively soft and suitable for general matte paint polishing, which can better maintain the matte effect.

[0061] In this embodiment, a sponge polishing disc with a mesh size of 6000 to 8000 may be used for polishing the matte paint surface, so that the roughness of the polished paint surface is lower and the matte effect is better.

[0062] Optionally, the polishing paste is aluminum oxide polishing paste, and the particle size is set between 0.5 μm and 0.7 μm.

[0063] Among them, polishing paste is a material used to polish the surface of an object. In car paint repair, polishing paste usually contains fine abrasives and other auxiliary ingredients. By applying polishing paste to the paint surface with a polishing tool (such as a polishing disc) and rubbing it, fine scratches, oxide layers and unevenness on the paint surface can be removed, thereby improving the gloss and smoothness of the paint surface. For matte car paint, it is necessary to choose a polishing paste suitable for the characteristics of matte paint to avoid over-polishing and destroying the matte effect.

[0064] In this embodiment, an aluminum oxide polishing paste with a thickness of 0.5 μm to 0.7 μm may be selected for polishing the matte paint surface, so that the roughness of the polished paint surface is lower and the matte effect is better.

[0065] In this embodiment, after drying the repair paint, a specific polishing paste and polishing sponge are used for treatment, which can not only effectively eliminate the excess paint mist generated during the spraying process, but also accurately correct the unevenness caused by construction or paint damage. The repaired paint surface has the same delicate texture and flatness as the original paint, with a smooth touch and a natural visual effect, further enhancing the quality and visual effect of the repair.

[0066] In order to better understand this solution, a specific example is used to illustrate:

[0067] Example 1

[0068] The surface particles of the matte gray paint film of Factory A need to be repaired. The repair method includes the following steps:

[0069] (1) Take a nuclear grey matte paint main agent of model LS-40, mix them in a ratio of the volume of the matte paint main agent: the volume of the matte additive: the volume of the diluent = 1:0.05:0.4, stir them thoroughly and evenly to obtain a pre-repair paint, add a curing agent to the pre-repair paint, the volume ratio of the pre-repair paint to the curing agent is 2:1, stir them thoroughly and evenly to obtain a repair paint.

[0070] (2) Use 800# sandpaper to sand the damaged area until the defect is completely sanded away, then use 1200# sandpaper to expand the sanding range. Use compressed air to blow the sanding area to remove the sanding dust, and then clean the sanding area with alcohol.

[0071] (3) Stir the repair paint that has been prepared for no more than 2 hours and then load it into the spray gun. Adjust the air pressure of the spray gun to 0.2-0.4MPa, control the spraying distance to 15-20cm, and spray 3 layers in a thin spraying manner. The thickness of each layer of repair paint is controlled to be 5-10μm, so that the total thickness of the repair paint reaches 15-30μm. After the repair paint is completed, the surface of the repaired paint area is smooth, and there is no obvious difference in color from the original paint.

[0072] (4) Drying the repair paint: When drying the repair paint, the temperature of the baking lamp is set to 300°C, the baking distance is 30-50cm, and the baking time is 10min.

[0073] (5) Use a 3M eccentric polisher, fix an 8000 mesh sponge polishing disc on the polisher, and evenly apply 0.5-0.7μm particle size aluminum oxide polishing paste on the polishing disc. Adjust the speed of the polishing machine to 1500-2000 rpm, gently place the polishing disc on the car paint surface after repainting, and polish in a tic-tac-toe pattern. The polishing area each time is about 40*40cm. The polished paint surface is confirmed on-site by the quality personnel to be flat and smooth, and there is no obvious difference in the gloss of the original paint.

[0074] (6) The matte grey paint surface after repair was confirmed on-site by the quality personnel. The paint color and gloss were not significantly different from the original paint surface, and the repair was determined to be qualified.

[0075] Example 2

[0076] The shrinkage holes on the matte black paint film of Factory A need to be repaired. The repair process includes the following steps:

[0077] (1) Take a Duanyan black matte paint main agent of model LS-60, mix them in a ratio of the volume of matte paint main agent: the volume of matte additive: the volume of diluent = 1:0.06:0.7, stir them thoroughly to obtain a pre-repair paint, add a curing agent to the pre-repair paint, the volume ratio of the pre-repair paint to the curing agent is 2:1, stir them thoroughly to obtain a repair paint.

[0078] (2) Use 800# sandpaper to grind the defective area until the defect is completely polished away, then use 1200# sandpaper to expand the polishing range. Use compressed air to blow the polishing area to remove the polishing dust, and then clean the polishing area with alcohol.

[0079] (3) Stir the repair paint that has been prepared for no more than 2 hours and then load it into the spray gun. Adjust the air pressure of the spray gun to 0.2-0.4MPa, control the spraying distance to 15-20cm, and spray 3 layers in a thin spraying manner. The film thickness of each layer of repair paint is controlled to be 5-10μm, and the total film thickness of the repair paint reaches 15-30μm. After the repair paint is completed, the surface of the repair paint area is smooth, and there is no obvious difference in color from the original paint.

[0080] (4) Drying the repair paint: When drying the repair paint, the temperature of the baking lamp is set to 300°C, the baking distance is 30-50cm, and the baking time is 10min.

[0081] (5) Use a 3M eccentric polisher, fix a 6000 mesh sponge polishing disc on the polisher, and evenly apply 0.5-0.7μm particle size aluminum oxide polishing paste on the polishing disc. Adjust the speed of the polishing machine to 1500-2000 rpm, gently place the polishing disc on the car paint surface after repainting, and polish in a tic-tac-toe pattern. The area of ​​each polishing is about 40*40cm. The polished paint surface is confirmed on-site by the quality personnel to be flat and smooth, and there is no obvious difference in the gloss of the original paint.

[0082] (6) After the repair, the matte black paint surface was confirmed on site by the quality personnel. The paint color and gloss were no significantly different from the original paint surface, and the repair was determined to be qualified.

[0083] The method for repairing the matte paint surface of a car in this embodiment can ensure that high-quality matte paint repair effects can be achieved efficiently and stably under different car models and different paint damage conditions, and has significant technical advantages and commercial value.

[0084] Based on the same inventive concept, an embodiment of the present invention also provides a repair device for a matte paint surface of an automobile. Figure 2 : is a structural block diagram of a matte paint repair device for a car provided by an embodiment of the present invention, such as Figure 2 As shown, the device 200 includes

[0085] A pretreatment module 201 is used to pretreat the damaged part of the matte paint surface, and the pretreatment includes grinding, soot blowing and cleaning;

[0086] The spraying module 202 is used to spray the repair paint on the pre-treated damaged part, where the repair paint is prepared by mixing a matte paint main agent, a matting auxiliary agent, a diluent and a curing agent according to a set ratio;

[0087] The baking module 203 is used to dry the damaged part after spraying the repair paint.

[0088] Optionally, the device 200 further includes:

[0089] The polishing module is used to polish the damaged parts after drying.

[0090] Optionally, the polishing module is also used to:

[0091] The eccentric polishing machine is controlled to polish the damaged part after drying at a set rotation speed. The eccentric polishing machine uses a polishing disc with a set mesh value and a polishing paste with a set particle size.

[0092] Optionally, the polishing disc is a sponge polishing disc, and the set mesh value is between 6000 mesh and 8000 mesh.

[0093] Optionally, the polishing paste is aluminum oxide polishing paste, and the particle size is set between 0.5 μm and 0.7 μm.

[0094] Optionally, the apparatus 200 further includes a deployment module, configured to:

[0095] Adding a second volume of a matte paint additive and a third volume of a diluent to a container containing a first volume of a matte paint main agent, and stirring the mixture evenly to obtain a pre-repair paint, wherein a first ratio of the second volume to the first volume is within a preset first ratio range, and a second ratio of the third volume to the first volume is within a preset second ratio range;

[0096] A fifth volume of curing agent is added to the fourth volume of the pre-repair paint, and the mixture is stirred evenly to obtain the repair paint, wherein a third ratio of the fourth volume to the fifth volume is a preset ratio.

[0097] Optionally, the baking module is also used to:

[0098] The baking lamp is controlled to dry the damaged part after spraying the repair paint at a temperature of 300° C., wherein the baking distance is 30-50 cm and the baking time is 10 minutes.

[0099] It can be understood that the device provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0100] An embodiment of the present invention further provides an electronic device, which may include a processor and a memory, wherein the processor and the memory may be communicatively connected to each other via a bus or other means.

[0101] The processor may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application, or may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components and other chips, or a combination of the above-mentioned chips.

[0102] The memory may include a large capacity memory for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. Where appropriate, the memory may include a removable or non-removable (or fixed) medium. Where appropriate, the memory may be inside or outside the electronic device. In a particular embodiment, the memory may be a non-volatile solid-state memory.

[0103] In one example, the memory may be a read-only memory (ROM). In one example, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0104] The processor implements any one of the methods for repairing a matte paint surface of a car in the above-mentioned embodiments by reading and executing computer program instructions stored in the memory.

[0105] In one example, the electronic device may further include a communication interface and a bus. Among them, the processor, memory, and communication interface are connected through a bus and communicate with each other. The communication interface is mainly used to realize the communication between the modules, devices, units and / or devices in the embodiment of the present application. Where appropriate, the bus may include one or more buses.

[0106] In addition, in combination with the automotive matte paint repair method in the above embodiment, the present invention can provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by a processor, any of the automotive matte paint repair methods in the above embodiment is implemented.

[0107] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD), etc.; the storage medium can also include a combination of the above-mentioned types of memory.

[0108] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0109] The embodiments of the present invention provide a method, device, equipment and medium for repairing the matte paint surface of an automobile, which pre-treats the damaged parts of the matte paint surface of an automobile; sprays the pre-treated damaged parts with repair paint, which is prepared by mixing the matte paint main agent, matte additive, diluent and curing agent according to a set ratio. The specially prepared repair paint is used for spraying, which can save the step of spraying varnish, so that the matte effect, gloss and texture after spraying are better; the damaged parts after spraying the repair paint are dried to make the sprayed surface dry and complete the repair. This method saves the step of spraying varnish, sprays the specially prepared repair paint once and then dries it, so that the gloss and texture of the repaired matte paint surface are very close to the original matte paint surface, meeting customer requirements.

[0110] In addition, pretreatment includes grinding, soot blowing and cleaning, which can make the damaged part to be painted have a certain degree of roughness, effectively improving the adhesion of the repair paint.

[0111] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0112] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the intention that the claimed invention requires more features than those explicitly recited in each claim. More specifically, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present invention.

[0113] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "one" or "an" preceding a component does not exclude the presence of a plurality of such components. The present invention may be implemented by means of hardware comprising a number of different components and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

Claims

1. A method for repairing a matte paint surface of an automobile, characterized in that: The method comprises: Pre-treat the damaged parts of the matte paint surface of the car, including grinding, soot blowing and cleaning; Spraying a repair paint on the pre-treated damaged part, wherein the repair paint is prepared by mixing a matte paint main agent, a matting auxiliary agent, a diluent and a curing agent according to a set ratio; Dry the damaged area after spraying the repair paint.

2. The method for repairing a matte paint surface of an automobile according to claim 1, characterized in that: After drying the damaged part after spraying the repair paint, the method further comprises: Polish the damaged area after drying.

3. The method for repairing a matte paint surface of an automobile according to claim 2, characterized in that: The polishing treatment of the damaged part after drying comprises: The eccentric polishing machine is controlled to polish the damaged part after drying at a set rotation speed, and the eccentric polishing machine uses a polishing disc with a set mesh value and a polishing paste with a set particle size.

4. The method for repairing a matte paint surface of an automobile according to claim 1, characterized in that: The polishing disc is a sponge polishing disc, and the set mesh value is between 6000 mesh and 8000 mesh.

5. The method for repairing a matte paint surface of an automobile according to claim 1, characterized in that: The polishing paste is aluminum oxide polishing paste, and the set particle size is between 0.5 μm and 0.7 μm.

6. The method for repairing a matte paint surface of an automobile according to claim 1, characterized in that: Before spraying the repair paint on the pretreated damaged part, the method further comprises: Adding a second volume of a matte paint additive and a third volume of a diluent to a container containing a first volume of a matte paint main agent, and stirring the mixture to obtain a pre-repair paint, wherein a first ratio of the second volume to the first volume is within a preset first ratio range, and a second ratio of the third volume to the first volume is within a preset second ratio range; A fifth volume of curing agent is added to the fourth volume of pre-repair paint, and the mixture is stirred evenly to obtain the repair paint, wherein a third ratio of the fourth volume to the fifth volume is a preset ratio.

7. The method for repairing a matte paint surface of an automobile according to claim 1, characterized in that: The drying treatment of the damaged part after spraying the repair paint comprises: The baking lamp is controlled to dry the damaged part after spraying the repair paint at a temperature of 300° C., wherein the baking distance is 30-50 cm and the baking time is 10 minutes.

8. A matte paint repair device for a car, characterized in that: The device comprises: A pretreatment module is used to pretreat the damaged parts of the matte paint surface, including grinding, soot blowing and cleaning; A spraying module is used to spray a repair paint on the pre-treated damaged part, wherein the repair paint is prepared by mixing a matte paint main agent, a matting auxiliary agent, a diluent and a curing agent according to a set ratio; The baking module is used to dry the damaged parts after spraying the repair paint.

9. An electronic device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method according to any one of claims 1 to 7 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to cause the computer to execute the method according to any one of claims 1 to 7.

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