Spraying process for fission patterns of charging box

Abstract

The invention discloses a charging box fission pattern spraying process which comprises the following steps: S1, incoming material inspection: ensuring that the surface of a base material is flawless and pollution-free and meets the requirements of spraying pretreatment; the surface of the base material is subjected to rough grinding and fine grinding through abrasive paper or a mechanical grinding tool, uneven parts, scratches and an oxide layer on the surface are removed, and a uniform rough surface is formed to enhance the adhesive force of a coating; s3, ultrasonic cleaning is conducted, specifically, oil stains and dust impurities left on the surface are removed through ultrasonic vibration; and S4, baking: drying or airing after cleaning to form a protective film, and enhancing the anti-rust capability. The charging box is reasonable in design, the attractiveness of the charging box can be improved, the coating can effectively resist scraping, abrasion, corrosion and the like in daily use, the product quality can be guaranteed, meanwhile, the production period is shortened, the production cost is reduced, and the enterprise production benefits and the market response speed are improved.

Description

Technical Field

[0001] The present invention relates to the field of charging box spraying technology, and in particular to a charging box fission pattern spraying process. Background Art

[0002] The charging box is an accessory that provides portable charging for small electronic devices (such as wireless headphones and wearable devices). It has a built-in charging module and is powered by USB or wireless technology. The charging box fission pattern spraying process is a surface treatment process that combines traditional spraying technology with special coating characteristics. Its core lies in forming natural fission textures (such as ice cracks, burst cracks, etc.) on the coating surface through material properties or process control.

[0003] At present, the traditional spraying process is mainly single-color or simple gradient spraying, which is relatively monotonous in visual effect and cannot achieve complex, delicate and layered patterns such as fission patterns. At the same time, the traditional process is difficult to meet the increasingly stringent product use environment and quality standards in terms of coating adhesion, wear resistance and other properties. For this reason, we proposed the charging box fission pattern spraying process to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and the proposed charging box fission pattern spraying process can increase the aesthetics of the charging box. The coating can effectively resist scratches, wear, corrosion, etc. in daily use. While ensuring product quality, it can shorten the production cycle, reduce production costs, and improve the company's production efficiency and market response speed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The charging box fission pattern spraying process includes the following steps:

[0007] S1. Incoming material inspection: Ensure that the substrate surface is free of defects and pollution and meets the pre-spraying treatment requirements;

[0008] S2. Grinding: Use sandpaper or mechanical grinding tools to perform rough and fine grinding on the substrate surface to remove surface unevenness, scratches and oxide layers to form a uniform rough surface to enhance coating adhesion;

[0009] S3, Ultrasonic cleaning: Remove residual oil, dust and impurities on the surface through ultrasonic vibration;

[0010] S4, baking: drying or air-drying after cleaning to form a protective film and enhance the anti-rust ability;

[0011] S5, Wiping + Clamping: Use electrostatic dust removal cloth or solvent to wipe to remove fine impurities and avoid particles after spraying. Then fix the substrate on the fixture of the automated spraying equipment to ensure accurate position during spraying and avoid uneven texture caused by deviation.

[0012] S6, on-line spraying: the spray color is green, the material color is green, the production process of primer + electro-midcoat + topcoat is adopted, the line speed of the production line is 4.0±0.5M / min, the spray room temperature is 22±5℃, and the relative humidity is 35-80%;

[0013] S7, offline clamping: After spraying, it needs to be left to cool to avoid cracks in the coating due to temperature difference. Remove the sprayed substrate and avoid the fixture from scratching the surface to affect the appearance.

[0014] S8. Full inspection: The inspector wears finger cots or gloves on both hands and conducts inspection according to the SIP standard inspection book and the appearance limit samples provided by the customer. The product appearance must not have oil accumulation, particles, paint spots, dirt, color difference, scratches, bruises, exposed bottom, false spraying, pad printing deviation, pad printing color difference, and polishing collapse. Check the inside of the product, and there must be no dirt, dust accumulation, or defects;

[0015] S9. Packaging and shipment: Wrap with anti-scratch material to ensure the coating remains intact during transportation.

[0016] Preferably, in S6, the primer paint number is RHUV390BH-1, the film thickness is 22-28um, the baking temperature is 45°C±5°C, the baking time is 5-8min, and the following spray guns are used for spraying in sequence:

[0017] 2# spray gun, spray gun height -1mm, front and rear position 11.5mm, spray gun angle 35°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2;

[0018] 3# spray gun, spray gun height 25.5mm, front and rear position 17.5mm, spray gun angle 315°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2;

[0019] 4# spray gun, spray gun height 14mm, front and rear position 23mm, spray gun angle 285°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2;

[0020] 5# spray gun, spray gun height -1.5mm, front and rear position 9.4mm, spray gun angle 225°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2;

[0021] 6# spray gun, spray gun height 25.6mm, front and rear position 16.3mm, spray gun angle 314°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2;

[0022] 7# spray gun, spray gun height 12.5mm, front and rear position 22.5mm, spray gun angle 276°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2;

[0023] 8# spray gun, spray gun height 11.6mm, front and rear position 1.5mm, spray gun angle 276°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2;

[0024] The 2# spray gun, 3# spray gun and 4# spray gun rotate forward, and the 5# spray gun, 6# spray gun, 7# spray gun and 8# spray gun rotate reversely, with a rotation speed of 20±5r / min.

[0025] Preferably, in S6, the intermediate coating paint number is RHUV8303A8, the film thickness is 4-7um, the baking temperature is 55℃±5℃, the baking time is 5-8min, the dilution viscosity is 8.0±0.3″, and the following spray guns are used for spraying in sequence:

[0026] 1# spray gun, spray gun height -1mm, front and rear position 11.3mm, spray gun angle 230°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2;

[0027] 2# spray gun, spray gun height 24mm, front and rear position -14.2mm, spray gun angle 150°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2;

[0028] 4# spray gun, spray gun height 12.3mm, front and rear position 24mm, spray gun angle 172°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2;

[0029] 5# spray gun, spray gun height -2mm, front and rear position 9.9mm, spray gun angle 230°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2;

[0030] 6# spray gun, spray gun height 23.6mm, front and rear position 18mm, spray gun angle 145°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2;

[0031] 7# spray gun, spray gun height 11mm, front and rear position 23mm, spray gun angle 178°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2;

[0032] 8# spray gun, spray gun height 10.7mm, front and rear position 25.6mm, spray gun angle 175°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2;

[0033] The 1# spray gun, 2# spray gun and 4# spray gun rotate forward, and the 5# spray gun, 6# spray gun, 7# spray gun and 8# spray gun rotate reversely, with a rotation speed of 20±5r / min.

[0034] Preferably, in S6, the topcoat paint number is RHUV8205A19-1C, the film thickness is 18-22umum, the baking temperature is 55℃±5℃, the baking time is 5-8min, the dilution viscosity is 8.6±0.3″, and the following spray guns are used for spraying:

[0035] 1# spray gun, spray gun height -2mm, front and rear position 8.8mm, spray gun angle 235°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2;

[0036] 3# spray gun, spray gun height 24.8mm, front and rear position 14.4mm, spray gun angle 135°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2;

[0037] 4# spray gun, spray gun height 10.7mm, front and rear position -18.1mm, spray gun angle 174°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2;

[0038] 5# spray gun, spray gun height -2mm, front and rear position 11.5mm, spray gun angle 225°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2;

[0039] 6# spray gun, spray gun height 27.1mm, front and rear position 18.6mm, spray gun angle 140°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2;

[0040] 7# spray gun, spray gun height 13.7mm, front and rear position 23.2mm, spray gun angle 215°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2;

[0041] 8# spray gun, spray gun height 8.6mm, front and rear position 20.9mm, spray gun angle 270°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2;

[0042] The 1# spray gun, 3# spray gun, and 4# spray gun rotate forward, and the 5# spray gun, 6# spray gun, 7# spray gun, and 8# spray gun rotate reversely, with a rotation speed of 20±5r / min.

[0043] Preferably, during the spraying process of the primer, mid-coat and topcoat, the gun adjustment parameters are allowed to be within ±10%.

[0044] Preferably, the primer, mid-coat and topcoat materials are all made of ABS, the primer paint viscosity is 8.2±0.3″, the paint is filtered through 500 mesh, the mid-coat paint viscosity is 8.0±0.3″, the paint is filtered through 500 mesh, and the topcoat paint viscosity is 8.6±0.3″, the paint is filtered through 500 mesh.

[0045] Preferably, before operation, confirm that the materials used are environmentally friendly materials with RoHS labels, confirm whether the machinery and equipment are clean, whether maintenance and inspection records are kept on time, and confirm whether the operators wear protective equipment for hazardous substances before operation;

[0046] During operation, ensure that the production environment is clean and no non-environmentally friendly materials are mixed in;

[0047] After the operation, use environmentally friendly turnover boxes or packaging materials that meet environmental protection requirements for packaging, affix RoHS labels to the boxes or packaging, and place the products in the dedicated area for RoHS products.

[0048] Preferably, during the inspection process, finger cots or gloves must be worn and replaced every two hours. The brightness of the working area should be 700-1000LUX. During the inspection, pay attention to protecting the product, handle it with care, and avoid crushing, bumping, and scratching.

[0049] Compared with the prior art, the present invention has the following beneficial effects:

[0050] This spraying process not only forms beautiful patterns, but also improves the coating's ability to protect the charging box. By optimizing the coating formula and process parameters, the coating has better adhesion and fits tightly to the surface of the charging box, effectively resisting scratches, wear, corrosion, etc. in daily use. Process steps such as baking enhance the stability of the coating structure, improve the durability of the charging box, and extend the product's service life. The full inspection process runs through the entire process, starting with incoming material inspection to control the quality of raw materials. Strict inspections are carried out after each key process, which can promptly detect and eliminate unqualified products and ensure the quality of shipped products. Automated spraying equipment and precise process parameter control shorten the production cycle, reduce production costs, and improve corporate production efficiency and market response speed while ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a schematic diagram of the process flow of the fission pattern spraying process of the charging box proposed by the present invention;

[0052] Figure 2 This is a schematic diagram of the primer process parameters of the charging box fission pattern spraying process proposed by the present invention;

[0053] Figure 3 This is a schematic diagram of the middle coating process parameters of the charging box fission pattern spraying process proposed by the present invention;

[0054] Figure 4 This is a schematic diagram of the topcoat process parameters of the charging box fission pattern spraying process proposed by the present invention;

[0055] Figure 5 This is a schematic diagram of the product appearance of the charging box fission pattern spraying process proposed by the present invention;

[0056] Figure 6 This is a schematic diagram of the full inspection of the fission pattern spraying process of the charging box proposed by the present invention;

[0057] Figure 7 This is a schematic diagram of the inspection standard angle of the charging box fission pattern spraying process proposed by the present invention;

[0058] Figure 8 This is a schematic diagram of placing the fully inspected products in a blister box for the fission pattern spraying process for the charging box proposed by the present invention. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0060] Reference Figure 1-Figure 8 The charging box fission pattern spraying process includes the following steps:

[0061] Before operation: confirm that the materials used are environmentally friendly materials and have RoHS labels, such as: molds, tools, fixtures, auxiliary materials, release agents, cleaning agents, raw materials, etc.; confirm whether the machinery and equipment are clean, whether they are maintained and inspected on time; confirm whether the operators wear protective equipment for hazardous substances before operation.

[0062] S1. Incoming material inspection: Ensure that the substrate (the substrate is the charging box) has no defects, pollution, scratches, oxide layer or oil stains on the surface, and meets the pre-spraying treatment requirements. Among them, focus on testing the surface flatness, porosity parameters, material uniformity and the presence of burr defects, etc., to avoid abnormal cracks or coating shedding due to substrate problems in subsequent processes;

[0063] S2. Grinding: Use sandpaper or mechanical grinding tools to perform rough and fine grinding on the surface of the substrate to remove surface unevenness, scratches and oxide layers, etc., to form a uniform rough surface to enhance the adhesion of the coating and improve the bonding between the coating and the substrate, laying the foundation for the subsequent uniform formation of fission textures. For areas where fission patterns need to be formed, local fine grinding may be required to adjust the texture base;

[0064] S3, Ultrasonic cleaning: Remove impurities such as oil, dust, etc. remaining on the surface of the substrate through ultrasonic vibration;

[0065] S4, baking: drying or air-drying after cleaning to form a protective film, enhance the anti-rust ability, further dry the substrate, eliminate moisture and solvent residues, and prevent bubbling or cracking of the coating due to temperature difference or humidity changes during subsequent spraying;

[0066] S5, Wiping + Clamping: Use electrostatic dust removal cloth or solvent to wipe to remove fine impurities, avoid particles after spraying, and thus avoid secondary pollution. Fix the substrate on the fixture of the automated spraying equipment to ensure accurate position during spraying and avoid uneven texture caused by deviation.

[0067] S6, on-line spraying: the spray color is green, the material color is green, the production process of primer + electro-midcoat + topcoat is adopted, the line speed of the production line is 4.0M / min, the spray room temperature is 22℃, and the relative humidity is 55%;

[0068] The primer paint number is RHUV390BH-1, the film thickness is 25um, the baking temperature is 45℃, the baking time is 6min, and the following spray guns are used for spraying:

[0069] 2# spray gun, spray gun height -1mm, front and rear position 11.5mm, spray gun angle 35°, spray gun pressure 3.5kg, UV oven temperature 45℃℃, UV energy 800mJ / cm2;

[0070] 3# spray gun, spray gun height 25.5mm, front and rear position 17.5mm, spray gun angle 315°, spray gun pressure 3.5kg, UV oven temperature 45℃, UV energy 800mJ / cm2;

[0071] 4# spray gun, spray gun height 14mm, front and rear position 23mm, spray gun angle 285°, spray gun pressure 3.5kg, UV oven temperature 45℃, UV energy 800mJ / cm2;

[0072] 5# spray gun, spray gun height -1.5mm, front and rear position 9.4mm, spray gun angle 225°, spray gun pressure 3.5kg, UV oven temperature 45℃, UV energy 800mJ / cm2;

[0073] 6# spray gun, spray gun height 25.6mm, front and rear position 16.3mm, spray gun angle 314°, spray gun pressure 3.5kg, UV oven temperature 45℃, UV energy 800mJ / cm2;

[0074] 7# spray gun, spray gun height 12.5mm, front and rear position 22.5mm, spray gun angle 276°, spray gun pressure 3.5kg, UV oven temperature 45℃, UV energy 800mJ / cm2;

[0075] 8# spray gun, spray gun height 11.6mm, front and rear position 1.5mm, spray gun angle 276°, spray gun pressure 3.5kg, UV oven temperature 45℃, UV energy 800mJ / cm2;

[0076] 2# spray gun, 3# spray gun, 4# spray gun rotate forward, 5# spray gun, 6# spray gun, 7# spray gun, 8# spray gun rotate reversely, with a speed of 20r / min.

[0077] The intermediate coating paint number is RHUV8303A8, the film thickness is 5um, the baking temperature is 55℃, the baking time is 6min, and the dilution viscosity is 8.0″. The following spray guns are used for spraying:

[0078] 1# spray gun, spray gun height -1mm, front and rear position 11.3mm, spray gun angle 230°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 500mJ / cm2;

[0079] 2# spray gun, spray gun height 24mm, front and rear position -14.2mm, spray gun angle 150°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 500mJ / cm2;

[0080] 4# spray gun, spray gun height 12.3mm, front and rear position 24mm, spray gun angle 172°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 500mJ / cm2;

[0081] 5# spray gun, spray gun height -2mm, front and rear position 9.9mm, spray gun angle 230°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 500mJ / cm2;

[0082] 6# spray gun, spray gun height 23.6mm, front and rear position 18mm, spray gun angle 145°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 500mJ / cm2;

[0083] 7# spray gun, spray gun height 11mm, front and rear position 23mm, spray gun angle 178°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 500mJ / cm2;

[0084] 8# spray gun, spray gun height 10.7mm, front and rear position 25.6mm, spray gun angle 175°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 500mJ / cm2;

[0085] 1# spray gun, 2# spray gun, 4# spray gun rotate forward, 5# spray gun, 6# spray gun, 7# spray gun, 8# spray gun rotate reversely, with a speed of 20r / min.

[0086] The topcoat paint number is RHUV8205A19-1C, the film thickness is 20umum, the baking temperature is 55℃, the baking time is 6min, and the dilution viscosity is 8.6″. The following spray guns are used for spraying:

[0087] 1# spray gun, spray gun height -2mm, front and rear position 8.8mm, spray gun angle 235°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 900mJ / cm2;

[0088] 3# spray gun, spray gun height 24.8mm, front and rear position 14.4mm, spray gun angle 135°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 900mJ / cm2;

[0089] 4# spray gun, spray gun height 10.7mm, front and rear position -18.1mm, spray gun angle 174°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 900mJ / cm2;

[0090] 5# spray gun, spray gun height -2mm, front and rear position 11.5mm, spray gun angle 225°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 900mJ / cm2;

[0091] 6# spray gun, spray gun height 27.1mm, front and rear position 18.6mm, spray gun angle 140°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 900mJ / cm2;

[0092] 7# spray gun, spray gun height 13.7mm, front and rear position 23.2mm, spray gun angle 215°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 900mJ / cm2;

[0093] 8# spray gun, spray gun height 8.6mm, front and rear position 20.9mm, spray gun angle 270°, spray gun pressure 3.5kg, UV oven temperature 55℃, UV energy 900mJ / cm2;

[0094] 1# spray gun, 3# spray gun, 4# spray gun rotates forward, 5# spray gun, 6# spray gun, 7# spray gun, 8# spray gun rotates reversely, speed 20r / min

[0095] During the spraying process of primer, midcoat and topcoat, the gun adjustment parameters are allowed to be within ±10%.

[0096] During the operation, ensure that the production environment is clean and no non-environmentally friendly materials are mixed in.

[0097] The materials of primer, mid-coat and topcoat are all ABS, the paint color is green, the primer paint viscosity is 8.2″, the paint is filtered through 500 mesh, the mid-coat paint viscosity is 8.0″, the paint is filtered through 500 mesh, the topcoat paint viscosity is 8.6″, the paint is filtered through 500 mesh.

[0098] S7. Unclamping and offline: After spraying, it is necessary to let it stand and cool to avoid cracks in the coating due to temperature difference. Remove the sprayed substrate and avoid the fixture from scratching the surface to affect the appearance.

[0099] S8. Full inspection: The inspector wears finger cots or gloves on both hands and conducts inspection according to the SIP standard inspection book and the appearance limit samples provided by the customer. The product appearance must not have oil accumulation, particles, paint spots, dirt, color difference, scratches, bruises, exposed bottom, virtual spraying, pad printing deviation, pad printing color difference, grinding collapse and other undesirable phenomena. Check the inside of the product. There must be no dirt, dust accumulation, bumps and other undesirable phenomena. During the inspection process, finger cots or gloves must be worn and replaced every two hours. The brightness of the working area is 850LUX. During the inspection, pay attention to protecting the product, handle it with care, and there must be no undesirable phenomena such as bruises, bumps, scratches, etc. The products that have passed the full inspection are neatly placed in the blister box for packaging in the next process.

[0100] S9. Packaging and shipment: Use anti-scratch materials to wrap, ensure the coating is intact during transportation, use environmentally friendly turnover boxes or packaging materials that meet environmental protection requirements, affix RoHS labels to the boxes or packaging, and place the products in the dedicated area for RoHS products.

[0101] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. The charging box fission pattern spraying process is characterized by: The following steps are involved: S1. Incoming material inspection: Ensure that the substrate surface is free of defects and pollution and meets the pre-spraying treatment requirements; S2. Grinding: Use sandpaper or mechanical grinding tools to perform rough and fine grinding on the substrate surface to remove surface unevenness, scratches and oxide layers to form a uniform rough surface to enhance coating adhesion; S3, Ultrasonic cleaning: Remove residual oil, dust and impurities on the surface through ultrasonic vibration; S4, baking: drying or air-drying after cleaning to form a protective film and enhance the anti-rust ability; S5, Wiping + Clamping: Use electrostatic dust removal cloth or solvent to wipe to remove fine impurities and avoid particles after spraying. Then fix the substrate on the fixture of the automated spraying equipment to ensure accurate position during spraying and avoid uneven texture caused by deviation. S6, on-line spraying: the spray color is green, the material color is green, the production process of primer + electro-midcoat + topcoat is adopted, the line speed of the production line is 4.0±0.5M / min, the spray room temperature is 22±5℃, and the relative humidity is 35-80%; S7, offline clamping: After spraying, it needs to be left to cool to avoid cracks in the coating due to temperature difference. Remove the sprayed substrate and avoid the fixture from scratching the surface to affect the appearance. S8. Full inspection: The inspector wears finger cots or gloves on both hands and conducts inspection according to the SIP standard inspection book and the appearance limit samples provided by the customer. The product appearance must not have oil accumulation, particles, paint spots, dirt, color difference, scratches, bruises, exposed bottom, false spraying, pad printing deviation, pad printing color difference, and polishing collapse. Check the inside of the product, and there must be no dirt, dust accumulation, or defects; S9. Packaging and shipment: Wrap with anti-scratch material to ensure the coating remains intact during transportation.

2. The charging box fission pattern spraying process according to claim 1 is characterized in that: In the S6, the primer paint number is RHUV390BH-1, the film thickness is 22-28um, the baking temperature is 45℃±5℃, the baking time is 5-8min, and the following spray guns are used for spraying: 2# spray gun, spray gun height -1mm, front and rear position 11.5mm, spray gun angle 35°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2; 3# spray gun, spray gun height 25.5mm, front and rear position 17.5mm, spray gun angle 315°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2; 4# spray gun, spray gun height 14mm, front and rear position 23mm, spray gun angle 285°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2; 5# spray gun, spray gun height -1.5mm, front and rear position 9.4mm, spray gun angle 225°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2; 6# spray gun, spray gun height 25.6mm, front and rear position 16.3mm, spray gun angle 314°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2; 7# spray gun, spray gun height 12.5mm, front and rear position 22.5mm, spray gun angle 276°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2; 8# spray gun, spray gun height 11.6mm, front and rear position 1.5mm, spray gun angle 276°, spray gun pressure 3.5±0.5kg, UV oven temperature 45℃±5℃, UV energy 700-900mJ / cm2; The 2# spray gun, 3# spray gun and 4# spray gun rotate forward, and the 5# spray gun, 6# spray gun, 7# spray gun and 8# spray gun rotate reversely, with a rotation speed of 20±5r / min.

3. The charging box fission pattern spraying process according to claim 2 is characterized in that: In the S6, the intermediate paint number is RHUV8303A8, the film thickness is 4-7um, the baking temperature is 55℃±5℃, the baking time is 5-8min, the dilution viscosity is 8.0±0.3″, and the following spray guns are used for spraying: 1# spray gun, spray gun height -1mm, front and rear position 11.3mm, spray gun angle 230°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2; 2# spray gun, spray gun height 24mm, front and rear position -14.2mm, spray gun angle 150°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2; 4# spray gun, spray gun height 12.3mm, front and rear position 24mm, spray gun angle 172°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2; 5# spray gun, spray gun height -2mm, front and rear position 9.9mm, spray gun angle 230°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2; 6# spray gun, spray gun height 23.6mm, front and rear position 18mm, spray gun angle 145°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2; 7# spray gun, spray gun height 11mm, front and rear position 23mm, spray gun angle 178°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2; 8# spray gun, spray gun height 10.7mm, front and rear position 25.6mm, spray gun angle 175°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 400-600mJ / cm2; The 1# spray gun, 2# spray gun and 4# spray gun rotate forward, and the 5# spray gun, 6# spray gun, 7# spray gun and 8# spray gun rotate reversely, with a rotation speed of 20±5r / min.

4. The fission pattern spraying process of the charging box according to claim 3 is characterized in that: In the S6, the topcoat paint number is RHUV8205A19-1C, the film thickness is 18-22umum, the baking temperature is 55℃±5℃, the baking time is 5-8min, the dilution viscosity is 8.6±0.3″, and the following spray guns are used for spraying: 1# spray gun, spray gun height -2mm, front and rear position 8.8mm, spray gun angle 235°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2; 3# spray gun, spray gun height 24.8mm, front and rear position 14.4mm, spray gun angle 135°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2; 4# spray gun, spray gun height 10.7mm, front and rear position -18.1mm, spray gun angle 174°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2; 5# spray gun, spray gun height -2mm, front and rear position 11.5mm, spray gun angle 225°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2; 6# spray gun, spray gun height 27.1mm, front and rear position 18.6mm, spray gun angle 140°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2; 7# spray gun, spray gun height 13.7mm, front and rear position 23.2mm, spray gun angle 215°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2; 8# spray gun, spray gun height 8.6mm, front and rear position 20.9mm, spray gun angle 270°, spray gun pressure 3.5±0.5kg, UV oven temperature 55℃±5℃, UV energy 800-1000mJ / cm2; The 1# spray gun, 3# spray gun, and 4# spray gun rotate forward, and the 5# spray gun, 6# spray gun, 7# spray gun, and 8# spray gun rotate reversely, with a rotation speed of 20±5r / min.

5. The charging box fission pattern spraying process according to claim 4 is characterized in that: During the spraying process of the primer, mid-coat and topcoat, the gun adjustment parameters are allowed to be within ±10%.

6. The charging box fission pattern spraying process according to claim 4, characterized in that: The materials of the primer, mid-coat and topcoat are all ABS, the viscosity of the primer is 8.2±0.3″, the paint is filtered through 500 mesh, the viscosity of the mid-coat is 8.0±0.3″, the paint is filtered through 500 mesh, and the viscosity of the topcoat is 8.6±0.3″, the paint is filtered through 500 mesh.

7. The charging box fission pattern spraying process according to claim 1, characterized in that: Before operation, confirm that the materials used are environmentally friendly and have RoHS labels, confirm whether the machinery and equipment are clean, whether maintenance and inspection records are kept on time, and confirm whether the operators wear protective equipment for hazardous substances before operation; During operation, ensure that the production environment is clean and no non-environmentally friendly materials are mixed in; After the operation, use environmentally friendly turnover boxes or packaging materials that meet environmental protection requirements for packaging, affix RoHS labels to the boxes or packaging, and place the products in the dedicated area for RoHS products.

8. The charging box fission pattern spraying process according to claim 1, characterized in that: During the inspection process, finger cots or gloves must be worn and replaced every two hours. The brightness of the working area is 700-1000LUX. During the inspection, pay attention to protecting the product, handle it with care, and avoid crushing, bumping, and scratching.

Images