CN117282570A

CN117282570A - Paint spraying protection assembly and protection method

Info

Publication number: CN117282570A
Application number: CN202311291842.2A
Authority: CN
Inventors: 吴丽平
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-10-08
Filing date: 2023-10-08
Publication date: 2023-12-26

Abstract

The application discloses protection component and protection method spray paint, including first protection component, first protection component includes first guard plate, sets up at first guard plate outward flange and is used for wrapping up the edge protection adhesive tape A at the skin part edge of waiting to spray paint, and set up in a plurality of double-end sucking discs that are used for between first guard plate and the skin part are fixed first guard plate and skin part relative position. The paint spraying protection assembly provided by the invention can meet the requirements of full-area spraying, center spraying with edge distance and edge spraying of parts, is clamped by the edge protection adhesive tape, has the characteristics of high installation efficiency, good edge distance uniformity, good protection compactness and the like, and simultaneously, compared with the traditional bonding protection mode, the paint spraying protection assembly fundamentally solves the problem of waste generated by paint spraying.

Description

Paint spraying protection assembly and protection method

Technical Field

The invention relates to the technical field of paint spraying protection, in particular to the technical field of paint spraying protection of plate-shaped materials, and specifically relates to a paint spraying protection assembly and a protection method.

Background

Of the spray-painted parts, most typically, the spray-painting requirements are high and are commonly found in automotive and aerospace parts; the automobile covers the skin part, and the aviation part is stamped, cast, cut and formed and then needs to be sprayed with paint for protection, however, the paint sprayed by parts mounted on different parts of the automobile and the airplane is different, and the automobile is taken as an example, the paint spraying requirement of the automobile surface is highest, and generally comprises primer, colored paint and varnish, while the automobile interior part is generally subjected to rust-proof treatment, and some parts can not be sprayed with the colored paint, and some parts can only be sprayed with the colored paint, so that the spraying requirement is lower compared with the outer skin part. The frosted paint surface of the aviation part is generally green and commonly called as primer; also glossy, generally off-white in color, commonly known as top coat; the finish paint is generally a part arranged in an aircraft, the part is not sprayed after being assembled, and a new paint surface can be covered again on the primer, so that different parts or different parts of the same part can be sprayed with different paints, cross contamination of the paint surface needs to be avoided during paint spraying, absolute protection needs to be made during paint spraying, and paint flying is avoided.

The existing paint spraying protection mode is relatively simple, a paper adhesive tape is generally adopted to adhere along the edge of a paint spraying area, paint is conveniently and clearly sprayed, then, the places needing no paint spraying are covered and shielded by kraft paper, and finally, the kraft paper is fixed by the paper adhesive tape, and only the places needing paint spraying are exposed.

The disadvantages of this traditional shielding approach are manifold: firstly, when edge pasting is carried out, the precision is difficult to accurately control, and most of the precision is judged by operation experience, because once pasting is blocked, the margin cannot be checked, the pasting precision depends on the experience of an operator, subjective uncertainty exists, and a new person cannot generally carry out the operation; secondly, a large amount of materials are consumed by adopting the paper adhesive tape for pasting, including the paper adhesive tape and kraft paper, and the paper adhesive tape and kraft paper with paint do not have the value of secondary use, and can be torn off when being dismantled, so that a large amount of wastes can be generated in workshops; thirdly, the process of pasting and covering the covering takes a lot of time, taking a boarding door after the empty passenger A320 as an example, and a skilled senior worker needs about 30 minutes from the beginning of the operation to the completion of covering the covering. Therefore, there is room for improvement in the manner of using the existing conventional adhesive type covering shielding paint protection.

Disclosure of Invention

In order to solve the problem that the bonding efficiency is lower in the protection process of spraying paint in the prior art, waste can be produced simultaneously, and waste treatment cost and pollution are increased, the application provides a protection subassembly and a protection method of spraying paint for replace current protection mode of spraying paint, solve the protection waste treatment degree of difficulty of spraying paint big, can cause the problem of pollution to the environment.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows:

the paint spraying protection assembly comprises a first protection assembly body, wherein the first protection assembly body comprises a first protection plate, an edge protection adhesive tape A which is arranged at the outer edge of the first protection plate and used for wrapping the edge of a skin part to be painted, and a plurality of double-head suckers which are arranged between the first protection plate and the skin part and used for fixing the relative positions of the first protection plate and the skin part.

For convenient dismouting, preferably, edge protection adhesive tape A comprises integrated into one piece's first U type structure, lateral wall and second U type structure, first U type structure is connected with first guard plate edge, second U type structure and skin part edge joint.

In order to ensure the fit between the edge protection adhesive tape A and the first protection plate and avoid paint flying, preferably, a connecting piece is arranged between the first U-shaped structure and the first protection plate in a penetrating way; the two side walls of the second U-shaped structure are respectively provided with a wedge-shaped edge strip contacted with the surface of the skin part, and the distance between the edges of the wedge-shaped edge strips at the two sides in a natural state is smaller than the thickness of the skin part.

In order to meet the requirements of different paint spraying margins, the application range and the practicability of the invention are increased, and preferably, the invention further comprises a U-shaped margin strip which is arranged in the second U-shaped structure and used for adjusting the margin L of the skin part covered by the wedge-shaped margin strip.

Still further preferably, for the paint spraying part with the hollow structure, preferably, the paint spraying part further comprises a first protective adhesive tape and/or a second protective adhesive tape arranged in the middle of the skin part, and the cross-section structures of the first protective adhesive tape and the second protective adhesive tape are consistent with the cross-section structure of the edge protective adhesive tape A and are respectively connected with the first protection plate and the skin part.

In order to further increase the practicability of the invention, the protective device can effectively protect different painting positions, and preferably, the protective device further comprises a second protective plate, wherein an edge protective adhesive tape B is arranged at the edge of the second protective plate, the edge protective adhesive tape B is provided with a sealing part which is integrally formed and is in contact with the surface of the skin part and a clamping part which is used for being connected with the second protective plate, and the cross section of the sealing part is in a wedge-shaped arrangement.

For convenient installation, preferably, the double-head sucker comprises a sucker A, a connecting column and a sucker B which are integrally formed.

Further preferably, the shape of the first protection plate is adapted to the skin part.

Still further preferably, the shape of the second protection plate is adapted to the skin part or a structure formed by equally-spacing shrinkage of the skin part along the edge.

The invention also provides a paint spraying protection method, which comprises the steps of spraying the center of the skin part and spraying the edge of the skin part,

the step of center spraying includes:

step STP100, positioning, namely attaching a first protection plate with the same shape as the skin part or the edge of the skin part to be painted to the opposite side of the skin part, and fixedly attaching the skin part and the first protection plate by using a U-shaped clamp or a locking pliers;

step STP200, fixing, namely loosening the aligned skin part and a U-shaped clamp or a locking pliers at one end of the first protection plate, and installing a double-head sucker between the skin part and the first protection plate and adsorbing and fixing the double-head sucker; then other U-shaped clamps or locking pliers are loosened gradually, double-head suckers are installed gradually according to the same method, finally all the U-shaped clamps or locking pliers are loosened, and the skin part is fixed with the first protection plate through the double-head suckers;

step STP300, shielding, namely clamping the second U-shaped structure of the edge protection adhesive tape A with the edge of the skin part and checking whether shielding is uniform and complete; meanwhile, checking whether the skin part has a hollowed-out structure, if so, executing the step STP400, and if not, executing the step STP500;

step STP400, hollowed-out shielding, namely selecting one or more first protective adhesive tapes and/or second protective adhesive tapes according to the size and the number of hollowed-out structures to clamp and shield all edges of the hollowed-out structures, and finishing shielding of all edges of the skin part;

STP500, spraying paint by adopting atomization spraying or electrostatic spraying;

the edge spraying step comprises the following steps:

step STP600, mounting a second protection plate on one side of the skin part to be sprayed according to the mode of step STP 100-step STP200, checking whether a strip-shaped belt formed between the contact position of the edge protection adhesive tape B and the surface of the skin part and the edge of the skin part is uniform or not, and if not, adjusting by adding U-shaped edge distance strips with different thicknesses; if so, executing step STP700;

in step STP700, spray painting is performed by adopting atomization spraying or electrostatic spraying.

The beneficial effects are that:

1. the paint spraying protection assembly provided by the invention can meet the requirements of full-area spraying, center spraying with edge distance and edge spraying of parts, is clamped by the edge protection adhesive tape, has the characteristics of high installation efficiency, good edge distance uniformity, good protection compactness and the like, and simultaneously, compared with the traditional bonding protection mode, the paint spraying protection assembly fundamentally solves the problem of waste generated by paint spraying.

2. The paint spraying assembly provided by the invention has adjustability for edge distance protection or edge distance spraying of parts, and the problem that the edge distance is not uniform due to the fact that the existing adhesive tape bonding mode does not have adjustability and the edges which are bonded manually do not have consistency and smoothness is avoided.

3. The paint spraying protection assembly provided by the invention can be suitable for any special-shaped plate part, and is wide in application range and convenient to install.

4. The invention is special for mass production of parts, has fast protection and assembly, good uniformity and high margin reservation consistency, and can greatly improve the efficiency and quality of paint spraying.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.

Figure 1 is an exploded view of the structure of the present invention mated with a skin piece.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a partial cross-sectional view taken along section symbol A-A in fig. 2.

Fig. 4 is a schematic cross-sectional view of the addition of a U-shaped edge clearance bar to that of fig. 3.

Fig. 5 is a schematic view showing a spraying state according to an embodiment of the present invention.

Fig. 6 is a front view (edge spray protection state) of another embodiment of the present invention.

Fig. 7 is a partial cross-sectional view taken along section symbol B-B in fig. 6.

FIG. 8 is a schematic cross-sectional view of the addition of a U-shaped pitch strip to that of FIG. 7.

Fig. 9 is a schematic view of a prior art construction using tape in combination with kraft paper or newspaper attachment protection.

In the figure: 1-a first protection plate; 2-a first protective adhesive tape; 3-a second protective adhesive tape; 4-double-head sucking disc; 41-sucking disc A; 42-connecting columns; 43-sucking disc B; 5-edge protection adhesive tape A; 51-a first U-shaped structure; 52-a second U-shaped structure; 53-wedge-shaped strakes; 54-connectors; 55-U-shaped edge distance strips; 6-covering parts; 7-a handle hole; 8-a viewing window; 9-a second protection plate; 10-edge protection adhesive tape B; 101-a seal; 102-a clamping part; 11-adhesive tape; 12-kraft paper.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, if the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship that a product of the application conventionally puts in use, it is merely for convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like in the description of the present application, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.

Furthermore, the terms "horizontal," "vertical," and the like in the description of the present application, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Example 1:

because the invention has various application scenes, firstly, in the embodiment, the edge distance of the edge is required to be protected, and only the middle part of the part is sprayed for illustration. Referring to the paint spraying protection assembly shown in fig. 1 of the specification, the paint spraying protection assembly comprises a first protection assembly, wherein the first protection assembly comprises a first protection plate 1, an edge protection adhesive tape A5 arranged at the outer edge of the first protection plate 1 and used for wrapping the edge of a skin part 6 to be painted, and a plurality of double-head suckers 4 arranged between the first protection plate 1 and the skin part 6 and used for fixing the relative positions of the first protection plate 1 and the skin part 6. The double-end sucking disc 4 can be flexibly distributed at any position between the first protection plate 1 and the skin part 6, and can be suitable for the skin parts 6 with different shape structures, so that the special-shaped aviation skin piece has extremely high adaptability and practicability for special-shaped automobile skins. After the first protection plate 1 is aligned with the skin part 6, the edge protection adhesive tape A5 is clamped with the skin part 6, so that the edge of the skin part 6 is covered and shielded, at the moment, the middle part can be sprayed with primer without causing paint flying on the edge only by removing the exposed middle part, and the protection effect is achieved.

Example 2:

in this embodiment, on the basis of embodiment 1, for easy dismounting, the edge protection adhesive tape A5 is composed of a first U-shaped structure 51, a side wall and a second U-shaped structure 52 which are integrally formed, the first U-shaped structure 51 is connected with the edge of the first protection plate 1, and the second U-shaped structure 52 is clamped with the edge of the skin part 6. Referring to fig. 2-4 of the specification, in order to solve the problems that the traditional adhesive tape is time-consuming and labor-consuming, the edge width control is not standard, and waste is generated after paint spraying, the edge protection adhesive tape A5 shown in fig. 3-4 is adopted in the embodiment to be respectively clamped with the edge of the first protection plate 1 and the edge of the skin part 6, the structure and the clamping mode are fast to install, the edge control has consistency, the effect is good, the spraying preparation time is short, the protection effect is good, the waste is not generated after spraying, the three wastes are not needed to be treated, and the waste itself or the treated waste is not polluted.

In order to ensure the fit between the edge protection adhesive tape A5 and the first protection plate 1 and avoid paint flying, preferably, a connecting piece 54 is further arranged between the first U-shaped structure 51 and the first protection plate 1 in a penetrating manner; the two side walls of the second U-shaped structure 52 are both provided with wedge-shaped side strips 53 contacting with the surface of the skin part 6, and the distance between the edges of the wedge-shaped side strips 53 at the two sides in a natural state is smaller than the thickness of the skin part 6. With continued reference to fig. 3 and fig. 4, the first U-shaped structure 51 can be naturally clamped and attached to the skin part 6, so that a good contact seal can be achieved at the contact position between the wedge-shaped edge strip 53 and the surface of the skin part 6, and therefore the area included by the wedge-shaped edge strip 53 can be completely isolated from the paint spraying area, and the protection purpose is achieved.

To meet the different paint margin requirements, the application scope and the practicability of the invention are increased, and preferably, the invention further comprises a U-shaped margin strip 55 arranged in the second U-shaped structure 52 for adjusting the margin L of the skin part 6 covered by the wedge-shaped margin strip 53. Referring to fig. 3 and 4 of the specification, the U-shaped edge strip 55 is an important structure for adjusting the edge distance L, the edge distance required to be reserved for spraying of different parts is different, or 10mm, or 8mm, or 6mm, or 5mm, or other edge distances which are not listed, if the shielding width H formed by shielding the skin part 6 by the wedge-shaped edge strip 53 is larger than the required edge distance L, the U-shaped edge strip 55 needs to be added, the thickness k=h-L of the U-shaped edge strip 55 is selected, that is, if the wedge-shaped edge strip 53 is completely clamped with the edge of the skin part 6, the shielding edge distance width is 12mm, and the edge distance required to be reserved at present is 8mm, then the U-shaped edge strip 55 with the thickness of 12-8=4 mm needs to be arranged in the second U-shaped structure 52, so that the edge distance of the covered skin part 6 is just met when the second U-shaped structure 52 is installed on the edge of the part 6.

Example 3:

the embodiment is still further preferably based on any one of the foregoing embodiments, and in this embodiment, the paint spraying part further includes a first protective adhesive tape 2 and/or a second protective adhesive tape 3 disposed in the middle of the skin part 6, where the cross-sectional structures of the first protective adhesive tape 2 and the second protective adhesive tape 3 are consistent with the cross-sectional structure of the edge protective adhesive tape A5 and are respectively connected with the first protection plate 1 and the skin part 6. Referring to fig. 1 and 2 of the specification and fig. 5, the skin part 6 is provided with two hollowed holes, namely an observation window 8 for installing glass and a handle hole 7 for installing a handle, if the hollowed holes at the two positions are not protected, edges at the two observation windows 8 and the handle hole 7 are not protected, and all paint is sprayed, so that in order to solve the problem, the first protective adhesive tape 2 and/or the second protective adhesive tape 3 are adopted for protection, and the installation mode and the protective effect are consistent with those of the edge protective adhesive tape A5, and are not repeated herein; it should be noted that, in the present embodiment, the first protective adhesive tape 2 and the second protective adhesive tape 3 are only for convenience of description, and the functions and structures thereof are not different, and when the third, fourth, or even more hollow holes on the skin part 6 need to be shielded, the same manner can be adopted to solve the problem, which is not listed here.

Example 4:

the present embodiment is described with respect to the application scenario of protection for central spraying of the skin part 6, which is different from that described in embodiments 1-3, in order to further increase the practicability of the present invention, the present embodiment is described with respect to the application scenario of edge distance/edge portion spraying for central protection, specifically, on the basis of any of the foregoing embodiments, the present embodiment further includes a second protection plate 9, an edge protection adhesive tape B10 is installed on an edge of the second protection plate 9, the edge protection adhesive tape B10 has a sealing portion 101 that is integrally formed and contacts with a surface of the skin part 6, and a clamping portion 102 for connecting with the second protection plate 9, and a cross section of the sealing portion 101 adopts a wedge-shaped arrangement. Referring to fig. 6 to 8 of the drawings, the second protection plate 9 is installed on the side to be sprayed, and shields the central region of the skin part 6, which does not need to be sprayed, and only the edge region is exposed, so that the edge can be sprayed conveniently. Specific spray and conditioning steps and methods are described in detail in the examples below.

For convenience of installation, in this embodiment, the double-headed chuck 4 includes a chuck a41, a connecting post 42 and a chuck B43 integrally formed. The double-head sucker 4 has extremely high flexibility, can be adaptively fixed according to structures with different shapes and different sizes, and is not limited by the shape and the structure of the skin part 6. In this embodiment, the shape of the first protection plate 1 is adapted to the skin part 6.

Still further, the shape of the second protection plate 9 is adapted to the skin part 6 or a structure formed by equally narrowing the skin part 6 along the edge. The second shielding plate 9 is shaped to fit the skin part 6 but is reduced in size in such a way that an effective margin H reservation is achieved directly by mounting the edge protection strip B10 as shown in fig. 7-8, in a manner consistent with the central spraying of the above-described embodiments, i.e. by adding a required U-shaped margin strip 55 of thickness k, which is not described in detail here.

Example 5

The invention also provides a paint spraying protection method which is used for replacing the prior art of adopting the adhesive tape 11 and the kraft paper 12 to adhere and protect as shown in fig. 9 and is used for shielding a non-paint spraying area, thereby effectively avoiding the generation of paint spraying protection waste and fundamentally avoiding the problem of three wastes which are generated by waste treatment and pollute the environment. Specifically, the paint spraying protection method provided by the embodiment comprises the steps of spraying the center of the skin part 6 and spraying the edge of the skin part 6, and is combined with the structural schematic diagrams shown in fig. 1-8 of the specification,

the step of center spraying includes:

step STP100, positioning, namely attaching a first protection plate 1 with the same shape as the skin part 6 or the edge of the first protection plate is matched with the skin part 6 to be painted on the opposite side of the skin part 6, and fixing and attaching the skin part 6 and the first protection plate 1 by using a U-shaped clamp or a pair of locking pliers;

step STP200, fixing, namely loosening the aligned skin part 6 and a U-shaped clamp or a locking pliers at one end of the first protection plate 1, and installing the double-head sucker 4 between the skin part 6 and the first protection plate 1 and adsorbing and fixing; then other U-shaped clamps or locking pliers are loosened gradually, the double-head sucking discs 4 are installed gradually according to the same method, finally all the U-shaped clamps or locking pliers are loosened, and the double-head sucking discs 4 fix the skin part 6 and the first protection plate 1;

step STP300, shielding, namely clamping the second U-shaped structure 52 of the edge protection adhesive tape A5 with the edge of the skin part 6 and checking whether shielding is uniform and complete; meanwhile, checking whether the skin part 6 has a hollowed-out structure, if so, executing the step STP400, and if not, executing the step STP500;

step STP400, hollowed-out shielding, namely selecting one or more first protective adhesive tapes 2 and/or second protective adhesive tapes 3 according to the size and the number of hollowed-out structures to clamp and shield the edges of all hollowed-out structures, and finishing shielding of all edges of the skin part 6;

the edge spraying step comprises the following steps:

step STP600, mounting a second protection plate 9 on one side of the skin part 6 to be sprayed according to the mode of step STP 100-step STP200, checking whether a strip-shaped belt formed between the contact position of the edge protection adhesive tape B10 and the surface of the skin part 6 and the edge of the skin part 6 is uniform, and if not, adjusting by adding U-shaped edge distance strips 55 with different thicknesses; if so, executing step STP700;

The paint spraying mode is particularly suitable for spraying aviation parts, and as the parts positioned in the aircraft only spray finishing paint in the aviation parts, the paint is gray paint, and the paint spraying mode has the effects of protecting the parts and avoiding oxidation caused by contact of the parts and air; the parts outside the aircraft are generally spray-coated with a primer, which is a green frosted paint, so that the aircraft can conveniently spray different aircraft coatings on the aircraft body after delivery. Therefore, for painting of gate skins such as existing civil aircraft, it is particularly important for the margin preservation of the skin edges. Because the skin parts are protected from unstable quality by manual bonding, the skin parts are usually required to be carefully handled, and are required to be re-bonded with little skew, otherwise, the skin parts cannot meet the delivery standard, and therefore, the subsequent work of an aircraft manufacturing company is often restricted to be continued and continuously carried out. In order to solve the problem, the painting process is usually carried out by a third party, such as a painting company, a painting organization, a painting operation department, or the like with reliable quality, and the part industry of painting by the third party is commonly called as an external cooperation part, however, the inventor summarizes a great deal of experience and training in the process of long-term painting work and the conventional process of manually pasting the painting protection work, and the invention is completed through long-term research in order to solve the problems of the protection efficiency and the standardization and consistency of the protection rear margin. The method provided by the embodiment can meet the reservation of the margin and the spraying of the margin, and can protect the primer spraying area when finishing paint spraying; otherwise, the protection of the surface paint spraying area can be met when the primer is sprayed. Of course, the application of the invention is not limited to aircraft skin parts, but is equally applicable to automobiles or other sheet materials. It should be noted that, the automobile skin does not need to reserve a margin, and the opposite sides should be sprayed according to the manner of step STP 600-step STP700, so that the whole skin surface and edge can be ensured to realize complete and consistent spraying operation, and the full gloss and mirror surface of the skin surface are ensured.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. The protection subassembly sprays paint, including first protection subassembly, its characterized in that: the first protection assembly comprises a first protection plate (1), an edge protection adhesive tape A (5) arranged at the outer edge of the first protection plate (1) and used for wrapping the edge of a skin part (6) to be painted, and a plurality of double-head suckers (4) arranged between the first protection plate (1) and the skin part (6) and used for fixing the relative positions of the first protection plate (1) and the skin part (6).

2. The spray protection assembly of claim 1, wherein: the edge protection adhesive tape A (5) comprises an integrally formed first U-shaped structure (51), a side wall and a second U-shaped structure (52), wherein the first U-shaped structure (51) is connected with the edge of the first protection plate (1), and the second U-shaped structure (52) is clamped with the edge of the skin part (6).

3. The spray protection assembly of claim 2, wherein: a connecting piece (54) is arranged between the first U-shaped structure (51) and the first protection plate (1) in a penetrating way; the two side walls of the second U-shaped structure (52) are respectively provided with a wedge-shaped edge strip (53) which is contacted with the surface of the skin part (6), and the distance between the edges of the wedge-shaped edge strips (53) at the two sides in a natural state is smaller than the thickness of the skin part (6).

4. The spray protection assembly of claim 2, wherein: the U-shaped edge distance strip (55) is arranged in the second U-shaped structure (52) and used for adjusting the edge distance L of the skin part (6) covered by the wedge-shaped edge strip (53).

5. The spray protection assembly of any one of claims 1-4, wherein: the protective cover is characterized by further comprising a first protective adhesive tape (2) and/or a second protective adhesive tape (3) which are arranged in the middle of the cover part (6), wherein the cross-section structures of the first protective adhesive tape (2) and the second protective adhesive tape (3) are consistent with the cross-section structure of the edge protective adhesive tape A (5) and are respectively connected with the first protective plate (1) and the cover part (6).

6. The spray protection assembly of any one of claims 1-4, wherein: the novel skin part is characterized by further comprising a second protection plate (9), wherein an edge protection adhesive tape B (10) is arranged at the edge of the second protection plate (9), the edge protection adhesive tape B (10) is provided with a sealing part (101) which is formed by integrating and is in surface contact with the skin part (6) and a clamping part (102) which is used for being connected with the second protection plate (9), and the cross section of the sealing part (101) is in a wedge-shaped arrangement.

7. The spray protection assembly of any one of claims 1-4, wherein: the double-end sucker (4) comprises a sucker A (41), a connecting column (42) and a sucker B (43) which are integrally formed.

8. The spray protection assembly of claim 1, wherein: the shape of the first protection plate (1) is matched with the skin part (6).

9. The paint protection assembly according to claim 6, wherein: the shape of the second protection plate (9) is matched with the skin part (6) or is formed by the structure that the skin part (6) is reduced at equal intervals along the edge.

10. A paint spraying protection method, which is characterized in that: comprises a step of spraying the center of the skin part (6) and a step of spraying the edge of the skin part (6),

the step of center spraying includes:

step STP100, positioning, namely attaching a first protection plate (1) with the same shape as the skin part (6) or the edge of the first protection plate is matched with the opposite side of the skin part (6) to be sprayed with paint, and fixedly attaching the skin part (6) and the first protection plate (1) by using a U-shaped clamp or a large pair of pliers;

step STP200, fixing, namely loosening a U-shaped clamp or a locking pliers at one end of the aligned skin part (6) and the first protection plate (1), and installing a double-head sucker (4) between the skin part (6) and the first protection plate (1) and adsorbing and fixing; then other U-shaped clamps or locking pliers are loosened gradually, the double-head sucking discs (4) are installed gradually according to the same method, finally all the U-shaped clamps or locking pliers are loosened, and the double-head sucking discs (4) fix the skin part (6) with the first protection plate (1);

step STP300, shielding, namely clamping the second U-shaped structure (52) of the edge protection adhesive tape A (5) with the edge of the skin part (6) and checking whether shielding is uniform and complete; meanwhile, checking whether the skin part (6) has a hollowed-out structure, if so, executing the step STP400, and if not, executing the step STP500;

step STP400, hollowed-out shielding, namely selecting one or more first protective adhesive tapes (2) and/or second protective adhesive tapes (3) according to the size and the number of hollowed-out structures to clamp and shield the edges of all hollowed-out structures, and finishing shielding of all edges of the skin part (6);

the edge spraying step comprises the following steps:

step STP600, mounting a second protection plate (9) on one side of the skin part (6) to be sprayed according to the mode of the step STP 100-the step STP200, checking whether a strip-shaped belt formed between the contact position of the edge protection adhesive tape B (10) and the surface of the skin part (6) and the edge of the skin part (6) is uniform or not, and if the strip-shaped belt meets the spraying edge distance requirement, adjusting by adding U-shaped edge distance strips (55) with different thicknesses if the strip-shaped belt does not meet the spraying edge distance requirement; if so, executing step STP700;