Protective equipment used in painting and masking processes, fabrication methods, and painting methods for workpieces.

Abstract

This invention relates to a protective device for use in painting and masking processes and a method for the manufacture of such device, and a method for painting the workpiece. The protective device for use in painting and masking processes consists of: a flexible shield body (1), in which a flexible support piece (2) is arranged inside the flexible shield body (1), the flexible support piece (2) is used to support the flexible shield body (1), and the flexible support piece (2) allows the flexible shield body (1) to be attached to the surface of the workpiece to be painted; and a guide groove (5) and an inclined pad (6) are arranged at the edge of the flexible shield body (1). The protective device for use in painting and masking processes supports the masking of large-shaped and large-sized products, preventing deformation and wrinkling of the masked object, and effectively preventing paint from penetrating the masked surface through the edge of the device.

Description

A coating shielding protective gear, preparation method and workpiece coating method Technical Field

[0001] The present invention relates to the field of coating protective gear, and in particular to a coating shielding protective gear, a preparation method and a workpiece coating method. Background Art

[0002] Painting is a crucial step in modern product manufacturing. The quality of rust and corrosion resistant coatings is a crucial aspect of overall product quality. Product appearance quality not only reflects its protective and decorative properties but also plays a significant role in its value. Technical issues

[0003] Chinese patent CN214637947U, "A Novel Protective Gear for Paint Shielding" (application number 202023 072990.X), discloses a novel protective gear for paint shielding, comprising a flexible shielding plate with multiple bayonet slots disposed around the back of the plate. These bayonet slots contain removable magnets, solving the problem of protecting the workpiece surface from paint. However, the flexible shielding plate employed in this technology suffers from low strength, and the magnets within the flexible shielding plate are prone to detachment, resulting in poor product quality. Furthermore, the flexible shielding plate is neither waterproof nor oil-proof, and thus fails to provide the desired shielding effect on irregularly shaped, large, or extremely thin and long workpieces.

[0004] In order to solve the above problems, it is urgent to invent a coating shielding protective gear, a preparation method and a workpiece coating method to increase the strength of the protective gear to solve the protection problems such as water and oil avoidance when coating large-sized special-shaped workpieces. Technical Solutions

[0005] In response to the above technical problems, the embodiments of the present invention provide a coating shielding protective gear, a preparation method and a workpiece coating method, which effectively solve the coating protection problem of large-sized and special-shaped workpieces.

[0006] A first aspect of an embodiment of the present invention provides a painting shielding protective gear, comprising:

[0007] A flexible shielding body is provided with a flexible support member inside the flexible shielding body, and the flexible support member is used to support the flexible shielding body, and the flexible support member can make the flexible shielding body fit on the surface of the workpiece to be painted.

[0008] According to the paint shielding protective gear of the present invention, the flexible support member is provided with at least one mounting groove, in which an adsorption member is provided. The adsorption member is preferably a magnet, and the magnet is a ferrite magnet, a samarium cobalt magnet, an aluminum nickel cobalt magnet, an iron aluminum silicon magnet, or the like, which has a temperature resistance of more than 200°C. It has enhanced magnetic force and is resistant to high temperatures. It also has high magnetic properties at high temperatures and is suitable for adsorption and fixation in high temperature environments.

[0009] According to the painting shielding protective gear of the present invention, the edge of the flexible shielding body is provided with a guide groove, and the guide groove is used to discharge the painting liquid.

[0010] According to the painting shielding guard of the present invention, the outer side of the guide groove is connected to the inclined buffer portion, and the inclined buffer portion is used to buffer the impact of the painting liquid on the painting shielding guard during the painting process.

[0011] According to the painting shielding protective gear of the present invention, the inclination angle of the inclined buffer portion is 10°-30°, preferably 19°.

[0012] According to the painting shielding protective gear of the present invention, the thickness of the inclined buffer portion gradually decreases from one side of the guide groove outward, and the thickness of the thinnest part of the inclined buffer portion is 0.01mm-0.3mm, preferably 0.1mm-0.2mm.

[0013] A second aspect of an embodiment of the present invention provides a method for preparing a paint shielding protective gear, wherein the method is used to manufacture the paint shielding protective gear described above, and comprises the following steps:

[0014] Step 1: semi-finished product manufacturing, using a mold and a vulcanizer to injection mold the lower half of the flexible shield body;

[0015] Step 2: Place the pre-prepared flexible support member and adsorption member at the pre-designed corresponding positions on the lower half of the flexible shielding body prepared in step 1;

[0016] Step three: injection molding, in which the semi-finished product with the flexible support and adsorption parts provided in step two is further injection molded into a final shape.

[0017] A third aspect of an embodiment of the present invention provides a method for painting the surface of a workpiece, comprising using the painting masking protective gear described in the present invention to perform painting masking; wherein the painting masking includes blocking of spray coatings such as painting, plastic spraying, electrophoresis or powder spraying, or the painting masking includes masking of pre-treatment of painting, such as masking of phosphating pre-treatment.

[0018] A coating method for a workpiece surface according to the present invention comprises the following steps:

[0019] The first step is to prepare the coating shielding device of the present invention, which includes determining the shape of the flexible shielding body according to the shape of the workpiece surface;

[0020] The second step is to splice and adsorb multiple prepared coating masking protective gear on the surface of the workpiece to be coated;

[0021] The third step is painting or pre-painting treatment; painting includes any one of the painting methods such as spray painting, plastic spraying, electrophoresis, and powder spraying, or before spraying painting, plastic spraying, electrophoresis, or powder spraying, the painting shielding protective gear of the present invention can be used for shielding, for example, the painting shielding protective gear of the present invention can be used for shielding during the phosphating pre-treatment stage;

[0022] Step 4: Remove the paint masking protective gear. Beneficial effects

[0023] In the technical solution provided by the embodiment of the present invention, a coating shielding protective gear, a preparation method and a coating method thereof are provided, wherein a flexible support member is provided inside the flexible shielding body, and a guide groove and an inclined buffer portion are provided on the edge of the flexible shielding body. Compared with the prior art:

[0024] 1. The built-in flexible support can be adjusted to support special-shaped and large-sized products, effectively solving the deformation and wrinkles of the shielding caused by the low strength of the flexible support.

[0025] 2. The high-temperature resistant magnets embedded in the flexible support will be fixed in the designated position, which can better solve the problems of inaccurate positioning and easy falling of magnets affecting product performance, and reduce the risk of manual insertion of magnets and injury to personnel during the manufacturing process.

[0026] 3. The wrapping of the magnet with materials such as silicone or rubber shields the corrosion of the magnet by acid and alkali, so that the high-temperature resistant magnet can be repeatedly used in a vacuum state, making it extremely difficult to break, thereby increasing the frequency and cycle of use.

[0027] 4. Adding high temperature resistant elements such as samarium, cobalt, nickel and Si into the magnet solves the problem of magnet demagnetization at high temperature above 200°.

[0028] 5. Adding a 19° bevel and a 0.1mm-0.2mm soft silicone isolation tape to the periphery of the protective gear increases the water-proof and oil-proof effect of the protective gear, effectively preventing the paint from penetrating through the edge of the protective gear to the shielding surface, especially effectively preventing liquids with a density of not less than 0.7g / cm³ and a temperature of 0-400℃, especially 4-300℃, from penetrating through the edge of the protective gear to the shielding surface.

[0029] 6. Compared with the traditional method of using paper tape, POM board + paper tape, metal protective gear + bolts, etc., this product greatly reduces the cost of consumables and labor costs; and this product is easy to disassemble and assemble, and the weight of this product is reduced by more than half compared with the traditional metal protective gear, which greatly improves the work efficiency of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic structural diagram of a coating shielding protective gear according to an embodiment of the present invention;

[0031] FIG2 is a schematic diagram of the structure of a flexible shielding main body of a paint shielding protective gear according to an embodiment of the present invention;

[0032] FIG3 is a schematic diagram of a second structural shape of a flexible shielding main body of a paint shielding protective gear according to an embodiment of the present invention;

[0033] FIG4 is a schematic diagram of the third structural shape of a flexible shielding main body of a paint shielding protective gear according to an embodiment of the present invention;

[0034] FIG5 is a fourth schematic diagram of the structure of the flexible shielding main body of a paint shielding protective gear according to an embodiment of the present invention;

[0035] FIG6 is a schematic diagram of the fifth structural shape of a flexible shielding main body of a paint shielding protective gear according to an embodiment of the present invention;

[0036] 1-Flexible shielding body; 2-Flexible support member; 3-Mounting slot; 4-Adsorption member; 5-Guide slot; 6-Inclined buffer portion. Modes for Carrying Out the Invention

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0039] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0040] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0041] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0042] Referring to Figures 1-2, an embodiment of a paint shielding protective gear according to an embodiment of the present invention includes:

[0043] A flexible shielding body 1 is provided with a flexible support member 2 inside the flexible shielding body 1, and the flexible support member 2 is used to support the flexible shielding body 1. The flexible support member 2 can make the flexible shielding body fit on the surface of the workpiece to be coated, and the flexible support member plays the role of a keel; the flexible support member is provided with at least one mounting groove 3, and an adsorption member 4 is provided in the mounting groove. For example, the adsorption member is a magnet. The flexible shielding body is made of silicone or rubber material, which is not easily corroded by acid and alkali chemicals, and additives are added to the material of the flexible shielding body. The coating agent includes one or more fluorescent powders and ultraviolet absorbers. The fluorescent powder is added to facilitate use in environments with poor lighting conditions, while the ultraviolet absorber is added to prevent aging in strong sunlight, which would affect its service life. The flexible support is made of spring steel sheets, which can better fit the surface of the workpiece to be coated. The flexible shielding body is customized and shaped according to the use environment and requirements. The magnets are high-temperature resistant magnets such as ferrite magnets, samarium cobalt magnets, alnico magnets, and iron aluminum silicon magnets. The magnets can withstand temperatures above 200°C without demagnetization. This can solve the problem of magnet demagnetization when the product is used in a high-temperature drying oven. The silicone is made of high-temperature silicone to facilitate operation in a high-temperature drying oven.

[0044] Furthermore, the flexible supports and magnets can be removed after the protective gear reaches its lifespan and reused repeatedly as new materials in new products, achieving recycling and reuse. This minimizes wear and tear on the flexible supports and magnets, lowers costs, and creates zero hazardous waste. The number of magnets within the protective gear can be adjusted based on demand; a stronger magnetic force results in a more secure and flatter grip. This can be adjusted based on the parameters of the workpiece production process.

[0045] In a specific embodiment, a guide groove 5 is provided on the edge of the flexible shielding body 1 , and the guide groove 5 is used to discharge the painting liquid.

[0046] Furthermore, the outer side of the guide groove 5 is connected to an inclined buffer portion 6, and the inclined buffer portion 6 is used to buffer the impact of the coating liquid on the coating shielding protective gear during the coating process.

[0047] Furthermore, the inclination angle of the inclined buffer portion 6 is 10°-30°, preferably 19°.

[0048] According to the painting shielding protective gear of the present invention, the thickness of the inclined buffer portion gradually decreases from one side of the guide groove 5 outward, and the thickness of the thinnest part of the inclined buffer portion 6 is 0.01mm-0.3mm, preferably 0.1mm-0.2mm.

[0049] The guide groove and inclined buffer part effectively solve the problem of water blocking. During the painting process, excess paint can be discharged through the guide groove. The two ends of the guide groove are open to facilitate the outflow of liquid through the guide groove; a 19° bevel and a 0.1mm-0.2mm soft silicone isolation belt are added to the periphery of the protective gear to increase the water-proof effect of the protective gear and solve the impact force of water flow on the protective gear at right angles.

[0050] A coating shielding protective gear according to an embodiment of the present invention is described above. A workpiece surface coating method according to an embodiment of the present invention is described below. An embodiment of a workpiece coating method according to an embodiment of the present invention includes:

[0051] The paint shielding protective gear described in the present invention is used for paint shielding; wherein the paint shielding includes shielding of spray coating such as spray painting, plastic spraying, electrophoresis or powder spraying, or the paint shielding includes blocking of pre-painting treatment, such as shielding of phosphating pre-treatment.

[0052] A coating method for a workpiece surface according to the present invention comprises the following steps:

[0053] The first step is to prepare the coating shielding device of the present invention, which includes determining the shape of the flexible shielding body according to the shape of the workpiece surface. As shown in Figures 1-6, the flexible shielding body can be determined in several shapes according to the shape of the workpiece surface. Figures 1-6 only list several shapes, but are not limited to the shapes listed in the figures.

[0054] The second step is to splice and adsorb multiple prepared coating masking protective gear on the surface of the workpiece to be coated;

[0055] The third step is painting or pre-painting treatment; painting includes any one of the painting methods such as spray painting, plastic spraying, electrophoresis, and powder spraying, or before spraying painting, plastic spraying, electrophoresis, or powder spraying, the painting shielding protective gear of the present invention can be used for shielding, for example, the painting shielding protective gear of the present invention can be used for shielding during the phosphating pre-treatment stage;

[0056] Step 4: Remove the paint masking protective gear.

[0057] The following describes a method for manufacturing a paint shielding protective gear according to an embodiment of the present invention. An embodiment of the method for manufacturing a paint shielding protective gear according to an embodiment of the present invention includes:

[0058] The preparation method is used to manufacture the above-mentioned coating shielding protective gear, which comprises the following steps:

[0059] Step 1: Semi-finished product manufacturing: Use a mold and vulcanizer to injection mold the lower half of the flexible shield body 1. For example, the silicone material is injection molded twice. In step 1, the protective gear semi-finished product is separately molded with silicone. The upper mold temperature is 170°C, the lower mold temperature is 130°C, and the machine is pressurized for 10-50°F for 130 seconds.

[0060] Step 2: Place the pre-prepared flexible support member 2 and adsorption member 4 at the pre-designed corresponding positions on the lower half of the flexible shielding body 1 prepared in step 1;

[0061] For example, a band saw steel (not limited to metal materials) cut to a predetermined size is wire-cut to a predetermined thickness and precisely perforated to produce a flexible support member; a NdFeB (not limited to NdFeB) magnet element is inserted into a designated hole of the flexible support member and perforated (not limited to the perforation process) for fixation; and then fixed to the semi-finished blank injection-molded in step 1;

[0062] Step 3: injection molding, the semi-finished products of the flexible support member 2 and the adsorption member 4 set in step 2 are further injection molded into the final shape;

[0063] For example, the upper and lower injection-molded blanks are combined with a semi-finished flexible support member made of metal (not limited to metal) and positioned and die-cast. This is equivalent to secondary vulcanization. The duration is 130 seconds, the equipment pressure is 10-50°F, and the mold temperature varies from 160-220°C.

[0064] The coating masking protective gear prepared above, the magnet and the flexible support member are attached internally, which will enhance the flatness of the protective gear itself during adsorption, and better improve the proximity problem between the edge of the protective gear and the joint surface of the workpiece.

[0065] The 19° beveled surface design on the outer adsorption surface of the protective gear solves the right-angle impact force of water flow on the side of the equipment during water avoidance and reduces the possibility of infiltration.

[0066] Add guide grooves on the outside of the protective gear and the adsorption side of the workpiece. Once the water flow impacts the periphery of the protective gear and the workpiece, the guide grooves will have a certain ability to naturally discharge the water.

[0067] Adding a 0.1mm-0.2mm soft silicone isolation belt between the above-mentioned guide groove and the periphery of the protective gear is likely to increase the water-proof effect of the protective gear.

[0068] In this embodiment, the flexible support member can better fix the magnetic point and solve the working requirements of irregular-shaped, large-sized, long and thin parts; the overall silicone-coated magnet avoids the magnet being exposed to corrosion by acids and alkalis, greatly increasing the frequency and cycle of use of the protective gear, increasing the flatness of the protective gear and solving the gap problem between the edge of the protective gear and the workpiece; adding a 19° bevel edge of silicone on the periphery to solve the impact force of water flow on the right angle; adding a guide groove on the outer side and the workpiece adsorption side for natural drainage; adding a 0.1mm-0.2mm silicone soft isolation belt between the guide groove and the outer cut angle to maximize the water and oil avoidance effect of the protective gear, and prevent paint, coatings and other coating liquids from penetrating from the edge of the protective gear to the shielding surface.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A coating shielding protective gear, characterized in that: It comprises a flexible shielding body (1), wherein a flexible support member (2) is arranged inside the flexible shielding body (1), and the flexible support member (2) is used to support the flexible shielding body (1), and the flexible support member (2) can enable the flexible shielding body (1) to fit on the surface of a workpiece to be coated.

2. The coating shielding protective gear according to claim 1, characterized in that: The flexible support member (1) is provided with at least one installation groove (3), and an adsorption member (4) is provided in the installation groove (3).

3. The painting shielding protective gear according to claim 2, characterized in that: A guide groove (5) is provided at the edge of the flexible shielding body (1), and the guide groove (5) is used to discharge the coating liquid.

4. The painting shielding protective gear according to claim 3, characterized in that: The outer side of the guide groove (5) is connected to an inclined buffer portion (6), and the inclined buffer portion (6) is used to buffer the impact of the coating liquid on the coating shielding protective gear during the coating process.

5. The painting shielding protective gear according to claim 4, characterized in that: The inclined buffer portion (6) has an inclination angle of 10°-30°.

6. The painting shielding protective gear according to claim 4, characterized in that: The thickness of the inclined buffer portion (6) gradually decreases from one side of the guide groove (5) toward the outside.

7. The painting shielding protective gear according to claim 6, characterized in that: The thickness of the thinnest part of the inclined buffer portion (6) is 0.01 mm to 0.3 mm.

8. A method for preparing a coating shielding protective gear, characterized in that: The preparation method is used to manufacture the coating shielding protective gear according to any one of claims 4 to 7, and comprises the following steps: Step 1: semi-finished product manufacturing, using a mold and a vulcanizer to injection mold the lower half of the flexible shielding body (1); Step 2: placing the pre-prepared flexible support member (2) and the adsorption member (4) at the corresponding pre-designed positions of the lower half of the flexible shielding body (1) prepared in step 1; Step three: injection molding, in which the semi-finished product on which the flexible support member (2) and the adsorption member (4) are arranged in step two is further injection molded into a final shape.

9. A method for coating a workpiece surface, characterized in that: It includes using the painting masking protective gear described in any one of claims 4 to 7 for painting masking, wherein the painting masking includes masking by spraying paint, spraying plastic, electrophoresis or powder spraying, or the painting masking includes masking by pre-painting treatment.

10. The method for coating a workpiece surface according to claim 9, characterized in that: The following steps are involved: The first step is to prepare the coating shielding protective gear according to any one of claims 4 to 7, comprising determining the shape of the flexible shielding body according to the shape of the workpiece surface; The second step is to splice and adsorb the prepared multiple coating masking protective gears on the surface of the workpiece to be coated; The third step is spray coating or spray coating pre-treatment; Step 4: Remove the paint masking protective gear.

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