Shield protection tool for coating, manufacturing method, and coating method of workpiece

Abstract

To provide a shield protection tool for coating, a manufacturing method, and a coating method of a workpiece that increase strength of the shield protection tool for coating and increase waterproof and oilproof effects at the time of coating a workpiece having a large size or an irregular shape.SOLUTION: A shield protection tool for coating includes a flexible shield body 1. A flexible support member 2 for supporting the flexible shield body is provided in the inside of the flexible shield body. The flexible support member can attach the flexible shield body to a surface of a coating target workpiece.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the field of paint protection equipment, and more particularly to a paint shielding protection equipment, a manufacturing method, and a method for painting a workpiece. [Background technology]

[0002] Painting is an important part of the manufacturing process of modern products. The quality of anti-rust and anti-corrosion paint is one of the key points for the overall quality of the product. The appearance quality of the product not only reflects the protective and decorative performance of the product, but is also an important factor that constitutes the value of the product.

[0003] Chinese Patent CN214637947U "New type of protective equipment used for coating shielding" (Application No. 202023072990.X) discloses a new type of protective equipment used for coating shielding, which includes a flexible shielding plate, the rear periphery of the flexible shielding plate is provided with a number of locking grooves, and removable magnet blocks are fitted into the locking grooves to solve the problem of coating protection of the workpiece surface. However, this technology has a low strength of the flexible shielding plate, and the magnets in the flexible shielding plate are easily dropped, resulting in product defects, and is not waterproof or oil-proof, so the expected effect in the shielding and protection work of irregular and large-sized or extremely thin and long workpieces cannot be achieved.

[0004] In order to solve the above problems, it is necessary to propose a painting shielding protective equipment, a manufacturing method, and a method for painting a workpiece, which increase the strength of the protective equipment and solve protection problems such as waterproofing and oil resistance when painting large and irregularly shaped workpieces. Summary of the Invention [Means for solving the problem]

[0005] In view of the above technical problems, the embodiments of the present invention provide a paint shielding device, a manufacturing method and a method for painting a workpiece, which can effectively solve the paint protection problem of large-sized and irregular-shaped workpieces.

[0006] A first aspect of the present invention provides a paint shielding device, The flexible shielding body includes a flexible shielding body, and a flexible support member for supporting the flexible shielding body is provided inside the flexible shielding body, and the flexible support member can attach the flexible shielding body to the surface of the workpiece to be painted.

[0007] In the paint shielding protector described in the present invention, the flexible support member is provided with at least one mounting groove, and an attraction member is provided in the mounting groove. The attraction member is preferably a magnet, and the magnet is a magnet having a heat resistance of 200°C or more, such as a ferrite magnet, a samarium cobalt magnet, an alnico magnet, or a sendust magnet, which has a strong magnetic force, excellent heat resistance, and high magnetism even at high temperatures, making it suitable for attraction and fixation in a high-temperature environment.

[0008] In the paint shielding protector according to the present invention, a guide groove for discharging the paint liquid is provided on the edge of the flexible shielding body.

[0009] In the paint shielding protector described in the present invention, an inclined buffer portion is connected to the outside of the guide groove for buffering the impact of the paint liquid on the paint shielding protector during painting.

[0010] In the paint shielding protector according to the present invention, the inclination angle of the inclined buffer portion is 10° to 30°, and preferably 19°.

[0011] In the paint shielding protector described in the present invention, the thickness of the inclined buffer portion gradually becomes thinner from one side of the guide groove toward the outside, and the thickness of the thinnest part of the inclined buffer portion is 0.01 mm to 0.3 mm, preferably 0.1 mm to 0.2 mm.

[0012] A second aspect of the present invention provides a method for manufacturing a paint shielding protector, the method being used to manufacture the paint shielding protector, Step 1: using a mold and a vulcanizer to injection mold the lower half of the flexible shielding body to produce a semi-finished product; Step 2: placing the prefabricated flexible support member and suction member at pre-designed corresponding positions on the lower half of the flexible shielding body fabricated in step 1; and step 3 of injection molding the semi-finished product in which the flexible support member and the suction member are arranged in step 2 into a finished product shape.

[0013] A third aspect of the embodiment of the present invention provides a method for painting a workpiece, comprising performing painting shielding using the painting shielding protective equipment described in the present invention, wherein the painting shielding comprises shielding of lacquer painting, electrostatic painting, electrophoretic painting or powder coating, or the painting shielding comprises shielding of a painting pre-treatment such as phosphating.

[0014] The method for coating a workpiece according to the present invention includes the following steps: Step 1: Manufacturing a paint shielding protector according to the present invention, which includes determining the shape of the flexible shielding body based on the shape of the work surface; Step 2: bonding and adsorbing the manufactured multiple paint shielding protective devices to the surface of the workpiece to be painted; Step 3: spray painting or pretreatment for spray painting. The painting may include any one of the painting methods such as lacquer painting, electrostatic painting, electrophoresis, or powder painting, or before lacquer painting, electrostatic painting, electrophoresis, or powder painting, the shielding device for painting according to the present invention may be used to shield the surface. For example, the shielding device for painting according to the present invention may be used to shield the surface during the phosphating step. Step 4: Remove the paint shield. Effect of the Invention

[0015] In the technical solution provided by the embodiment of the present invention, the coating shielding protection device, the manufacturing method and the coating method of the workpiece are provided with a flexible supporting member inside the flexible shielding body, and a guide groove and an inclined buffer part are provided on the edge of the flexible shielding body. Compared with the prior art, First, the flexible support member installed inside can be adjusted to support and support the shielding of irregular and large-sized products, and effectively solves the deformation and wrinkles of the shielding caused by the weak strength of the flexible support member.

[0016] Second, the heat-resistant magnet installed inside the flexible support member is fixed in place, which better solves the problem of inaccurate positioning and the magnet easily falling off, affecting product performance, and reduces the risk of injury to personnel caused by manually fitting magnets during the manufacturing process.

[0017] Third, by using materials such as silica gel or rubber to cover the magnet, the magnet can be shielded from acid-base corrosion. This allows the heat-resistant magnet to be used repeatedly in a vacuum, making it extremely resistant to damage and increasing the frequency of use and service life.

[0018] Fourth, by adding heat-resistant elements such as samarium, cobalt, nickel, and silicon to the magnets, the problem of magnets demagnetizing at temperatures above 200°C is solved.

[0019] Fifth, by adding a 19° oblique side and a 0.1mm-0.2mm soft silica gel isolation belt around the circumference of the protective gear, the waterproof and oil-proof effect of the protective gear is improved, and the paint is prevented from penetrating into the surface of the shielding protective gear through the edge of the protective gear, especially the liquid with a density of 0.7g / cm3 or more and a temperature of 0-400℃, especially 4-300℃, is prevented from penetrating into the surface of the shielding protective gear through the edge of the protective gear.

[0020] Sixth, compared with the previous methods such as paper tape, POM board + paper tape, and metal protective equipment + bolts, this product significantly reduces consumable costs and labor costs. In addition, the product is easy to install and remove. In addition, the weight of this product is almost lighter than that of traditional metal protective equipment, greatly improving the work efficiency of workers. [Brief description of the drawings]

[0021] [Figure 1] 1 is a schematic diagram showing the structure of a paint shielding protector according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram showing the structure of a flexible shielding body of a paint shielding protector according to an embodiment of the present invention; [Diagram 3] FIG. 2 is a schematic diagram of the structural shape of the flexible shielding body of the painting shielding protector in an embodiment of the present invention. [Figure 4] 3 is a schematic diagram of the structural shape of the flexible shielding body of the painting shielding protector in an embodiment of the present invention; FIG. [Diagram 5] FIG. 4 is a schematic diagram of the structural shape of the flexible shielding body of the painting shielding protector in an embodiment of the present invention. [Figure 6] FIG. 5 is a schematic diagram of the structural shape of the flexible shielding body of the painting shielding protector in an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, the technical aspects of the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments that can be obtained by those skilled in the art without creative labor belong to the scope of protection of the present invention.

[0023] In describing the embodiments of the present invention, the orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like are based on the orientations or positional relationships shown in the drawings, and are not intended to indicate or imply any particular orientation or configuration, but rather are intended to facilitate and simplify the description of the embodiments of the present invention, and should not be understood as limitations on the embodiments of the present invention, since the indicated devices or elements must be configured and operated in a particular orientation. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only, and are not to be understood as indicating or implying any relative importance.

[0024] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "connect" and "couple" should be understood in a broad sense, for example, they may be fixedly connected, detachably connected, or integrally connected, mechanically connected, or electrically connected, or they may be directly connected or indirectly connected via an intermediate medium. Those skilled in the art can specifically understand the specific meaning of the above terms in the embodiments of the present invention.

[0025] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature may be "above" or "below" the second feature, and the first and second features may be in direct contact with each other, or the first and second features may be in indirect contact with each other via an intermediate medium. Furthermore, the first feature is "above," "above," and "on the upper surface" of the second feature, but this only indicates that the first feature is directly above or diagonally above the second feature, or that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below," "below," and "on the lower surface" of the second feature, but this only indicates that the first feature is directly below or diagonally below the second feature, or that the horizontal height of the first feature is smaller than that of the second feature.

[0026] In the description herein, the reference terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, general expressions of the above terms do not necessarily have to be directed to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. Furthermore, without inconsistency, one skilled in the art can mix and match different embodiments or examples described herein, and features of different embodiments or examples.

[0027] Please refer to Figure 1-2. One embodiment of the paint shielding device according to the present invention is as follows: The flexible shielding body includes a flexible support member 2 for supporting the flexible shielding body 1, and the flexible support member 2 can be attached to the surface of the workpiece to be coated, and the flexible support member acts as 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 3. For example, the adsorption member is a magnet. The flexible shielding body adopts a silica gel material or a rubber material so as to be less susceptible to corrosion by acid-base chemicals, and additives are added to the material of the flexible shielding body, and the additives include one or more of phosphor and ultraviolet absorbent, the phosphor is mainly used to facilitate use in poor light conditions, and the ultraviolet absorbent is mainly used to facilitate use in strong sunlight conditions, and the strong sunlight aging is avoided, which affects its service life. The flexible support member adopts a spring steel plate, etc., which can be better attached to the surface of the workpiece to be coated, and the flexible shielding body can be customized and designed according to the use environment and requirements. The magnets are made of heat-resistant magnets such as ferrite magnets, samarium cobalt magnets, alnico magnets, and sendust magnets, and the magnets can withstand high temperatures of over 200° and will not demagnetize. This can solve the demagnetization problem of magnets when the product works in a high-temperature drying oven, and the silica gel is made of high-temperature silica gel so that the product can work in a high-temperature drying oven.

[0028] In addition, after the protective gear reaches its service life limit, the flexible support member and magnet can be removed and put into new products as new materials for repeated use. By recycling, the loss of the flexible support member and magnet can be minimized, costs can be reduced, and the production of hazardous waste can be eliminated. The number of magnets attached to the protective gear can be adjusted according to the required size, and the stronger the magnetic force, the stronger and flatter the adsorption will be. The parameters in the production process of the workpiece can be adjusted.

[0029] In one embodiment, the flexible shielding body 1 is provided at its edge with a guide groove 5 for discharging the coating liquid.

[0030] Furthermore, an inclined buffer portion 6 is connected to the outside of the guide groove 5 for buffering the impact of the coating liquid on the coating shielding protector during coating.

[0031] Furthermore, the inclination angle of the inclined buffer portion 6 is 10° to 30°, and preferably 19°.

[0032] In the paint shielding protector described in the present invention, the thickness of the inclined buffer portion gradually becomes thinner from one side of the guide groove 5 toward the outside, and the thickness of the thinnest part of the inclined buffer portion 6 is 0.01 mm to 0.3 mm, preferably 0.1 mm to 0.2 mm.

[0033] The guide groove and inclined buffer section effectively solve the problem of water blocking. During painting, excess paint is discharged through the guide groove. Both ends of the guide groove are open to allow the liquid to be discharged through the guide groove. The 19° oblique side is added to the outer circumference of the protective gear. The 0.1mm-0.2mm soft silica gel isolation belt increases the waterproof effect of the protective gear and avoids the impact force of the water flow at the right angle of the protective gear.

[0034] The above describes the shielding and protective equipment for painting in the embodiment of the present invention. Below, the method for painting a workpiece in the embodiment of the present invention will be described. One embodiment of the method for painting a workpiece in the embodiment of the present invention is as follows: The method includes performing paint shielding using the paint shielding protector according to the present invention, where the paint shielding includes shielding of lacquer painting, electrostatic painting, electrophoretic or powder coating, or the paint shielding includes shielding of a paint pretreatment such as phosphating.

[0035] The method for coating a workpiece according to the present invention includes the following steps: Step 1: Making a painting shielding protector according to the present invention, which includes determining the shape of the flexible shielding body according to the shape of the work surface; and Fig. 1-6 shows some shapes of the flexible shielding body determined according to the shape of the work surface, Fig. 1-6 only lists some shapes, but is not limited to the shapes listed in the drawings; Step 2: bonding and adsorbing the manufactured multiple paint shielding protective devices to the surface of the workpiece to be painted; Step 3: spray painting or pretreatment for spray painting, and the painting includes any of the painting methods such as lacquer painting, electrostatic painting, electrophoresis or powder coating, or before lacquer painting, electrostatic painting, electrophoresis or powder coating, the shielding protector for painting according to the present invention can be used to shield the surface, for example, the shielding protector for painting according to the present invention can be used to shield the surface during the phosphating step; Step 4: Remove the paint shield.

[0036] Hereinafter, a method for manufacturing a paint shielding protector in an embodiment of the present invention will be described. One embodiment of the method for manufacturing a paint shielding protector in an embodiment of the present invention is as follows: The manufacturing method is for manufacturing the painting shielding protector, and includes the following steps: Step 1: Using a mold and a vulcanizer, the lower half of the flexible shielding body 1 is injection molded to produce a semi-finished product. For example, silica gel material is injection molded twice. In step 1, as a semi-finished product of the protective gear, the silica gel is molded separately. Upper mold temperature 170°, lower mold temperature 130°, equipment pressure 10-50T, seconds 130s, Step 2: Arranging the pre-fabricated flexible support member 2 and the suction member 4 at pre-designed corresponding positions on the lower half of the flexible shielding body 1 fabricated in step 1; For example, a spring steel (not limited to metal material) cut to a predetermined dimension is wire-cut to a certain thickness and drilled very precisely to produce a flexible support member, and a neodymium-iron-boron (not limited to neodymium-iron-boron) magnet element is inserted into a designated hole of the flexible support member, drilled (not limited to drilling process) and fixed, and then fixed to the semi-finished blank injection molded in step 1; Step 3: Injection molding the semi-finished product in which the flexible support member 2 and the suction member 4 are arranged in step 2 into a finished product shape; For example, the upper and lower injection molded blanks and the flexible support metal (not limited to metal) flexible support semi-finished products are aligned and positioned, die-cast, and then secondary vulcanized. Time 130s, equipment pressure 10-50T, mold temperature 160-220°.

[0037] The coating shielding protector manufactured as above has an internal mounting method for the magnet and flexible support member, which enhances the flatness of the protector itself when it is attracted to the workpiece, and improves the contact problem between the edge of the protector and the joint surface of the workpiece.

[0038] By providing the suction surface around the outer periphery of the protective equipment with a 19° bevel, the perpendicular impact force of the water flow against the side of the equipment during the process of avoiding water is eliminated, reducing the possibility of infiltration.

[0039] By increasing the number of guide grooves on the outside of the protective gear and on the workpiece suction side, when the water flow collides with the outer periphery of the protective gear and the workpiece, the guide grooves can naturally drain the water.

[0040] By adding a 0.1mm-0.2mm soft silica gel isolation belt to the guide groove and the outer circumference of the protective gear, the waterproof effect of the protective gear can be improved.

[0041] In this embodiment, the flexible support member can better fix the magnetic dots and solve the work requirements of irregular shapes, large sizes, that is, long and thin parts. By covering the magnet with silica gel as a whole, the magnet is exposed to the outside and is prevented from being corroded by acid and base, and the frequency of use and service life of the protective gear are greatly increased, and the flatness of the protective gear is increased to solve the gap problem between the edge of the protective gear and the workpiece. By increasing the 19° bevel surface of the silica gel on the outer periphery, the impact force of the water flow at the right angle is solved. By increasing the guide groove on the outside of the protective gear and the adsorption side of the workpiece, it can be naturally drained. By increasing the 0.1mm-0.2mm silica gel soft isolation belt between the guide groove and the cutting corner of the outer periphery, the waterproof and oil-proof effect of the protective gear is maximized, and paint, coating liquids such as paints, coatings, etc. are prevented from penetrating into the shielding surface from the edge of the protective gear.

[0042] The above examples are only used to explain the technical aspects of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the above examples, those skilled in the art may modify the claims described in the above examples or replace some of the technical features with equivalents, and these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the spirit and scope of the technical solution of each embodiment of the present invention. [Explanation of symbols]

[0043] 1, flexible shielding body; 2, flexible support member; 3, mounting groove; 4, suction member; 5, guide groove; 6, inclined buffer part.

Claims

1. A shielding protective device for painting comprising a flexible shielding body (1), a flexible support member (2) for supporting the flexible shielding body (1) is provided inside the flexible shielding body (1), and the flexible support member (2) is capable of attaching the flexible shielding body (1) to the surface of a workpiece to be painted.

2. The paint shielding protective device according to claim 1, characterized in that the flexible support member (2) is provided with at least one mounting groove (3), and an adsorption member (4) is provided within the mounting groove (3).

3. 3. The paint shielding protector according to claim 2, characterized in that a guide groove (5) for discharging paint liquid is provided on the edge of the flexible shielding body (1).

4. The paint shielding protective device described in claim 3, characterized in that an inclined buffer portion (6) is connected to the outside of the guide groove (5) for buffering impact on the paint shielding protective device caused by the paint liquid during painting.

5. The paint shielding protective equipment according to claim 4, characterized in that the inclination angle of the inclined buffer portion (6) is 10° to 30°.

6. The paint shielding protector 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 paint shielding protective equipment 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 producing a paint shielding protector according to any one of claims 4 to 7, comprising: Step 1: Injection molding the lower half of the flexible shielding body (1) using a mold and a vulcanizer to produce a semi-finished product; Step 2: placing the prefabricated flexible support member (2) and suction member (4) at pre-designed corresponding positions on the lower half of the flexible shielding body (1) manufactured in step 1; and step 3 of injection molding the semi-finished product in which the flexible support member (2) and the suction member (4) are arranged in step 2 into a finished product shape.

9. A method for coating a workpiece, comprising: performing coating shielding using the coating shielding protective equipment according to any one of claims 4 to 7; wherein the coating shielding includes shielding of lacquer coating, electrostatic coating, electrophoresis or powder coating; or the coating shielding includes shielding of a coating pretreatment.

10. Step 1 of manufacturing the paint shielding protector according to any one of claims 4 to 7, which includes determining the shape of the flexible shielding body based on the shape of a work surface; Step 2: bonding and adsorbing the manufactured plurality of paint shielding protective devices to a surface of a workpiece to be painted; Step 3 of spray painting or pre-treatment for spray painting; The method for coating a workpiece according to claim 9, further comprising a step 4 of removing the coating shielding protective equipment.

Images